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Sodium tungstate as mordant The main uses of sodium tungstate are the production of ammonium paratungstate (APT), ammonium metatungstate (AMT), tungstic acid (H2WO4), and deep processing to produce tungsten trioxide (WO3), metal tungsten, tungsten carbide, hard alloy, Tungsten rod, tungsten wire, etc. In addition, sodium tungstate has some special uses and can be used to prepare other tungsten compounds for petrochemical catalysts, electroplating, textiles, flame retardants, water treatment, dyes, pigments, inks, etc. Some special purpose performances are as follows: 1. Mordant (English name: Mordant). It is widely used in chemistry and biology. Sometimes it is not feasible to stain cells and tissues only with dye solution. At this time, it can be treated with a drug solution that combines cells, tissues and pigments, and the material can be dyed. This drug solution is a mordant. It also refers to the substance used by the dye to dye the fabric through a certain medium to achieve the purpose of dyeing; 2. Catalyst. Substances that can change the chemical reaction rate of the reactants (both increase and decrease) in a chemical reaction without changing the chemical balance, and whose mass and chemical properties have not changed before and after the chemical reaction; 3. Stabilizer. Sodium tungstate has excellent thermal stability, which is superior to traditional lead salts and barium, zinc, pick stabilizers; and, in some applications, sodium tungstate stabilizers can partially or completely replace organotin; 4. Fabric weighting agent. Sodium tungstate can be used as a textile auxiliary in textiles. The mixture composed of sodium tungstate, ammonium sulfate, ammonium phosphate, etc. is used for fireproofing and waterproofing of fibers. Moreover, this fiber can be used to make fireproof rayon and rayon. for leather tanning; 5. Anti-corrosion of electroplating coating; 6. As a solvent, the introduction of enamel pigment can reduce the firing temperature and complement the color; 7. Used in the manufacture of petroleum industry and aviation and aerospace materials.

Sodium molybdate, chemical formula Na2MoO4, is an important inorganic compound. It has a variety of application fields and is widely used in metallurgy, chemical industry, environmental protection and other industries. First of all, sodium molybdate has played a vital role in the metallurgical industry. It is a commonly used molybdenum source and can be used for the extraction and preparation of molybdenum. Molybdenum is widely used in the production of stainless steel and alloy steel in metallurgy, which improves the hardness and corrosion resistance of the material and makes the product more competitive in the market. Secondly, sodium molybdate is also widely used in the chemical industry. It is an important catalyst and can be used in organic synthesis reactions. Sodium molybdate catalyst has the characteristics of high activity, high selectivity and high stability, which can accelerate the reaction rate, improve product purity, reduce energy consumption, and thus save production costs. In addition, sodium molybdate also plays an important role in the field of environmental protection. It can be used as an excellent oxidant for wastewater treatment and air pollution control. Sodium molybdate can effectively oxidize organic matter and heavy metal ions, transform them into non-toxic or low-toxic substances, reduce environmental pollution and protect the ecological environment. To sum up, sodium molybdate is a multifunctional inorganic compound widely used in metallurgy, chemical industry, environmental protection and other industries. Its excellent properties and wide range of uses make it the material of choice in many industries. Whether it is to improve product quality, reduce production costs, or protect the environment, sodium molybdate can play an important role. Choose sodium molybdate, choose an efficient, reliable and environmentally friendly solution!

According to the latest news, Tungstic Oxide (tungstic acid compound) has more and more promising application prospects in the electronics industry. Tungstic oxide is an important electronic material with excellent optical, electrical and thermal properties, and can be widely used in displays, solar cells, LEDs and other fields. At present, Tungstic Oxide has become one of the indispensable materials in the display manufacturing industry. It can be used to make transparent electrodes in liquid crystal displays and can improve the brightness and contrast of the displays. In addition, Tungstic Oxide can also be used in the manufacture of solar cells, which can improve the conversion efficiency of solar cells. In addition, Tungstic Oxide can also be used in the manufacture of LEDs (Light Emitting Diodes). LED is a high-efficiency light source with advantages such as long life, low energy consumption, and high brightness, so it has been widely used in the fields of lighting and display. And Tungstic Oxide can be used to make transparent electrodes in LEDs, which can improve the brightness and efficiency of LEDs. In general, the application prospect of Tungstic Oxide in the electronics industry is very broad. With the continuous development of electronic products, the demand for Tungstic Oxide is also increasing. It is believed that in the near future, Tungstic Oxide will become one of the indispensable materials in the electronics industry.

Recently, a new type of molybdenum metal rod has attracted widespread attention in the market. This molybdenum metal rod is made of high-quality molybdenum material, which has excellent mechanical properties and corrosion resistance, and is widely used in aerospace, electronics, chemical, medical and other fields. It is understood that the manufacturing process of this molybdenum metal rod adopts advanced production technology and equipment to ensure the high quality and stability of the product. The surface of molybdenum metal rod is smooth, without oxide layer, has good processing performance, and can be easily cut, drilled, polished and other processing operations. In addition to excellent mechanical properties and processing properties, this molybdenum metal rod also has excellent corrosion resistance. It can operate stably for a long time in harsh environments such as high temperature, high pressure, acid and alkali, and will not be corroded and damaged, thus ensuring the safe and stable operation of the equipment. The advent of this molybdenum metal rod will provide strong support for technological innovation and equipment manufacturing in various fields. In the future, it is expected to become one of the important materials in aerospace, electronics, chemical, medical and other fields, and make positive contributions to promoting industrial upgrading and economic development.

Recently, a domestic technology company successfully developed high-purity molybdenum trioxide, which has attracted widespread attention in the field of materials science. It is reported that high-purity molybdenum trioxide is an important material widely used in electronics, optoelectronics, optics, chemistry, textiles, machinery and other fields. Previously, most molybdenum trioxide in the domestic market had problems such as high impurity content and insufficient purity, which prevented it from exerting its maximum effectiveness in high-end application fields. In order to solve this problem, the company has invested a lot of manpower, material resources and financial resources, through various technical means and technological processes, and finally successfully developed high-purity, high-quality molybdenum trioxide, and passed a number of strict tests And verification. According to the person in charge of the company, the newly developed high-purity molybdenum trioxide has the following advantages: the purity is as high as 99.99%, the impurity content is extremely low, it has good optical, electrical, and thermal properties, and it can withstand high temperature, high pressure, strong acid, strong alkali, etc. Stable operation in harsh environments, can be widely used in semiconductors, solar cells, optical devices, chemical reactors and other fields. The achievement of this achievement not only fills the gap in the domestic high-end molybdenum trioxide material market, but also injects new impetus into the development of my country's material science field. In the next step, the company will continue to increase research and development efforts, launch more high-end material products, and make greater contributions to my country's technological innovation and industrial upgrading.

It is reported that the factory is one of the few enterprises in China that produces 99.5% ammonium tungstate ammonia, and its products have been widely used in electronics, aviation, chemical and other fields. Products that have passed the international quality certification will further enhance the company's competitiveness in the international market. The person in charge of the factory said that they have always paid great attention to the improvement of product quality and production technology. Only through continuous technological innovation and process improvement can they produce high-quality 99.5% ammonium tungstate ammonia products. Passing the international quality certification this time is an affirmation and encouragement for their continuous efforts. In addition, the factory also stated that it will continue to increase product research and development and production in the future, continuously improve product quality and production efficiency, and provide customers with better products and services. 99.5% ammonia ammonium tungstate is an important industrial raw material, widely used in electronics, aviation, chemical industry and other fields. With the continuous development of these fields, the demand for high-quality 99.5% ammonium tungstate ammonia is also increasing. In the future, the factory will continue to give full play to its own advantages, provide customers with better products and services, and make greater contributions to the development of domestic and foreign markets.

According to reports, recently, the domestic market price of sodium molybdate has risen steadily. In the case of a basic balance between supply and demand, the market demand is relatively stable, but due to the limited production of some molybdenum mining enterprises, the supply of sodium molybdate has decreased and the price has increased. In addition, the competitive landscape of the domestic sodium molybdate market is also changing. Traditional large-scale sodium molybdate manufacturers are facing competition from small and medium-sized enterprises, and these small and medium-sized enterprises mainly compete for market share by reducing costs and improving product quality. It is expected that the domestic sodium molybdate market will maintain a relatively stable situation in the future, but the market competition will become more intense, and enterprises will need to continuously improve their competitiveness to meet market challenges.

The synthetic method of sodium molybdate: 1. In the laboratory, it can be obtained by melting the mixture of molybdenum trioxide and sodium carbonate. In industry, the raw material molybdenite (main component MoS2) is oxidized and roasted to produce crude molybdenum oxide, washed with nitric acid to remove impurities, then dissolved in aqueous sodium hydroxide solution, heated and concentrated to obtain sodium molybdate dihydrate Na2MoO4·2H2O. Heating to 100 ° C Serve anhydrous. The main application of sodium molybdate: 1. Used in the preparation of molybdenum salts and dyes, pigments, catalysts, corrosion inhibitors, etc. 2. Used as metal corrosion inhibitor, scale remover, bleach accelerator and skin and hair protectant 3. Used as an analytical reagent for the determination of alkaloids, dyes and pharmaceutical industries 4. Precipitants, catalysts, and molybdenum salts for the manufacture of alkaloids, inks, fertilizers, molybdenum red pigments, and light-resistant pigments. They can also be used for the manufacture of flame retardants and metal inhibitors for pollution-free cold water systems. They can also be used as plating agents. Zinc, polishes and chemicals. 5. Molybdate is an anodic oxide film type corrosion inhibitor, which forms a ferrous-ferrous-molybdenum oxide passivation film on the anode iron to play a role in corrosion inhibition.

Sodium molybdate for agriculture is first synthesized by hydration method. A more convenient synthesis is performed by dissolving MoO3 in sodium hydroxide at 50–70 °C and crystallizing the filtered product. Anhydrous salts were prepared by heating to 100°C. MoO 3 + 2NaOH + H 2 O→Na 2 MoO 4 2H 2 O. Agricultural sodium molybdate uses 1 million pounds per year as fertilizer. In particular, its use has been suggested for the treatment of whiptail in cauliflower and cauliflower in molybdenum-deficient soils. Care must be taken though, as sodium molybdate levels of 0.3 ppm can cause copper deficiency in animals, especially cattle. It is used industrially for corrosion inhibition because it is a non-oxidizing anodic inhibitor. The addition of sodium molybdate significantly reduces the nitrite demand of nitrite amine inhibited fluids and improves the corrosion protection of carboxylate fluids. Sodium molybdate is preferred over sodium nitrite in industrial water treatment applications where galvanic corrosion occurs due to the bimetallic structure. The advantage of sodium molybdate is that the addition of lower ppm molybdate can reduce the conductivity of the circulating water. The content of sodium molybdate at 50-100ppm is the same as sodium nitrite above 800ppm, which has the same level of corrosion inhibition. By using lower concentrations of sodium molybdate, the electrical conductivity is kept to a minimum and thus the galvanic corrosion potential is reduced. When sodium molybdate reacts with sodium borohydride, molybdenum is reduced to lower-valent oxides: Na 2 MoO 4 + NaBH 4 + 2H 2 O → NaBO 2 + MoO 2 + 2NaOH + 3 H 2 The acid reaction of sodium molybdate with dithiophosphoric acid: Na2MoO4 + (RO)2PS2H (R = Me, Et) → [MoO2(S2P(OR)2)2] Further reaction forms [MoO 3 (S 2 P(OR) 2 ) 4 ]. Sodium molybdate is incompatible with alkali metals, most common metals and oxidizing agents. It explodes on contact with molten magnesium. It reacts violently with halogens (eg, bromine pentafluoride; chlorine trifluoride). Its reaction with hot sodium, potassium or lithium is incandescent. Related tags: Sodium molybdate, Sodium tungstate, Hot Products: Reagent Ammonium Molybdate Industry Ammonium Molybdate Reagent Sodium Molybdate Industry Sodium Molybdate Phosphomolybdate Ammonium Phosphomolybdate Molybdenum Trioxide Industry Molybdenum Trioxide Molybdenum Molybdate Potassium Molybdate Reagent Molybdenum Disulfide Industry Molybdenum Disulfide Molybdate Tungsten Trioxide Tungsten Trioxide Sodium acid

Properties and uses of sodium molybdate Sodium molybdate is sodium molybdate, chemical formula Na2MoO4, which is a white rhombic crystal. It can be used in chemical reagents, dyes, pigments and other fields. physical properties Sodium molybdate is soluble in water but insoluble in acetone. chemical properties Sodium molybdate reacts with acid to produce molybdic acid precipitation: Na2MoO4 + 2 HCl → H2MoO4↓ + 2 NaCl preparation Molybdenum trioxide is produced by oxidizing and roasting molybdenum concentrate, which is leached with liquid caustic soda to form sodium molybdate solution, which can be obtained after suction filtration, concentration, cooling, centrifugation and drying. use Sodium molybdate is one of the most important molybdates. It is used as a raw material for the manufacture of dyes, molybdenum red pigments, and light-fast color precipitants; it is used for phosphomolybdic acid, sodium phosphomolybdate, molybdate, and molybdenum-containing catalysts , the manufacture of metal corrosion inhibitors and flame retardants for pollution-free industrial cooling water systems; it is also used as analytical reagents for alkaloids, galvanizing, polishing agents, and essential trace components for animals and plants.

Ammonium tungstate: (NH4)6W7O24·6H2O colorless orthorhombic crystal. Soluble in water, insoluble in ethanol. Four molecules of crystal water were removed at 100°C. For the system of ammonium phosphotungstate and so on. It is obtained by crystallization after the action of tungstic acid and ammonia water. For the manufacture of tungsten alloys and tungsten compounds. Ammonium Paratungstate: Melting Point : 3410 °C(lit.) Boiling Point : 5660 °C(lit.) Density : 19.3 g/mL at 25 °C(lit.) Form : wireMerck : 13,567 Chemical Properties White crystal. Soluble in water, insoluble in alcohol. Uses Used as raw material for the manufacture of other tungsten compounds and metal tungsten Ammonium metatungstate -52-5.mol Chemical properties White crystal. Soluble in water, insoluble in alcohol. Uses Used as raw material for the manufacture of other tungsten compounds and metal tungsten

Sodium Molybdate Dihydrate - Basic Information Chinese name Sodium molybdate dihydrate English name Sodium Molybdate Dihydrate Alias Sodium Molybdate Dihydrate Sodium Molybdate, Dihydrate English alias Sodium molybdate(VI) dihydrate CCRIS 3682 Disodium molybdate dihydrate Sodium molybdate dihydrate UNII-8F2SXI1704 Molybdate (MoO42-), disodium, dihydrate, (T-4)- Molybdic acid, disodium salt, dihydrate disodium dioxido(dioxo)molybdenum sodium dioxido(dioxo)molybdenum hydrate (2:1:2) CAS 10102-40-6 EINECS 231-107-2 Chemical formula H4MoNa2O6 Molecular weight 241.948 InChI InChI=1/Mo.2Na.2H2O.4O/h;;;2*1H2;;;;/q;2*+1;;;;;2*-1/rMoO4.2Na.2H2O/c2-1 (3,4)5;;;;/h;;;2*1H2/q-2;2*+1; Melting point 100℃ (dec.) Water solubility 56 g/100 mL (O℃) Dangerous Goods Sign Xi - Irritant irritant Risk Terms R36/37/38 - Irritating to eyes, respiratory system and skin. Safety Phrases S24/25 - Avoid contact with skin and eyes.

Sodium acetate is a chemical substance that is used in our lives as a sour agent for food such as sauces, sauerkraut, mayonnaise, fish cakes, sausages, bread, sticky cakes, etc., as well as meat preservatives, pigments, etc. It, there are many production methods of sodium acetate, our company will help you to list a few, so that sodium acetate can benefit people better: 1. Place sodium acetate trihydrate in a ceramic dish, heat at 120°C until a dry white substance is obtained, and obtain anhydrous sodium acetate. In organic synthesis, for example, when using anhydrous sodium acetate and soda lime eutectic to prepare methane, the anhydrous sodium acetate used should be prepared immediately before use. Put an appropriate amount of sodium acetate trihydrate in a porcelain evaporating dish, and heat it to about 58°C under stirring with a glass rod, the sodium acetate trihydrate is dissolved in the crystal water, and the water gradually evaporates to obtain a white solid, and the temperature at this time is about 120°C . Continue to heat until the solid melts, but the temperature should not exceed the melting point of sodium acetate (324°C) to avoid the decomposition of sodium acetate into acetone and sodium carbonate. Cool slightly with stirring, grind finely in a mortar while still hot, and store immediately in an airtight container until later. 2. Neutralize acetic acid with crystalline sodium carbonate, filter, evaporate, cool, crystallize, and dry at room temperature. 3. It is formed by treating calcium acetate with sodium sulfate and sodium bicarbonate. 4. There are many production methods of sodium acetate, which can be obtained by the action of dilute acetic acid or calcium acetate and soda ash; it can also be obtained by metathesis of sodium sulfate and calcium acetate. In industry, the scraps of pharmaceutical factories and spice factories are often used to recover sodium acetate. Pour 628kg of dilute acetic acid into the reactor, and add 200kg of soda ash into the reactor in stages. Without stirring, start the induced draft fan to extract air. After the reaction is stable, start stirring to make the soda ash and acetic acid fully react, and then put it into the evaporator to heat and concentrate until the liquid density is 1.24g/cm3 and stop heating. The reaction solution was filtered and poured into a crystallizer, adjusted with NaOH to pH 9.2, and cooled to 35°C for crystallization. The surface mother liquor was removed, and the crystallization was dried to obtain 350kg of white powdery product. The primary yield is about 70%.

Sodium molybdate is a source of molybdenum oxide, a chemical that has a variety of useful industrial, commercial and agricultural uses. Sodium molybdenum is also an essential mineral that is used in a variety of different fields, such as metalwork, manufacturing, printing, agriculture, and even health. Every industry benefits greatly from the use of sodium molybdate, but this mineral has some general benefits worth exploring. Uses of sodium molybdate 1. Fertilizer agricultural additives Sodium molybdate is widely used as an agricultural additive on farms. It is ideal for fertilizer applications. This is because the basic chemical composition of molybdate compounds such as sodium molybdate includes molybdenum oxide in a high oxidation state. This means that the chemical is extremely soluble in water. Fertilizers using sodium molybdate easily mix with water and penetrate the soil, transporting molybdenum oxide and other valuable micronutrients to the roots and minimizing runoff, which wastes compounds and can negatively impact the environment. 2. Hydroponic Agriculture Similar to traditional soil-based fertilizer applications, sodium molybdate can be used in hydroponic farming, which uses an inert substrate instead of soil as a growing medium. Mineral nutrient solutions are delivered directly to the plants through water, so highly soluble nutrients and fertilizers are ideal for these. 3. Corrosion inhibitor Sodium molybdate is commonly used as a metal corrosion inhibitor for steel and is commonly found in water treatment products, such as chiller systems, where bimetallic designs and constructions increase the risk of metal corrosion. This additive is primarily used in closed-loop systems and is considered far superior to other corrosion inhibitors such as sodium nitrate. Sodium molybdate at only 50 to 100 ppm provides superior performance compared to sodium nitrate at 800+ ppm. 4. Nutritional supplements Some people may choose to supplement their diet with sodium molybdate. These products can be found individually, but molybdenum is often found in multivitamins and multivitamins. A typical dosage range for dietary supplements is about 50mcg to 500mcg (micrograms) of sodium molybdate. Most people don't need an additional source of molybdenum because this micronutrient is present in a variety of foods, such as beans, yogurt, potatoes, whole-grain bread, beef liver, spinach, corn, cheese, tuna, and more. However, sodium molybdate is a good choice for individuals who do not eat properly or want to ensure adequate micronutrient availability. Poisoning due to excessive ingestion of molybdenum is rare and usually occurs only in the mining and metalworking industries, so sodium molybdate supplementation is generally harmless. key health benefits Sodium molybdenum can actually be found in small amounts in many foods, such as dairy or soy, and even in your drinking water. In some cases, however, when the diet is deficient in molybdenum, you can find specialized molybdenum supplements or even a blend of vitamins, minerals, and other amino acids to add to your diet. Some of the main health benefits of this substance include: prevent tooth decay Prevents sulfite sensitivity, which occurs when you don't get enough molybdenum, which causes a decrease in sulfite oxidase, a substance that helps the body convert sulfites into sulfates; treats copper deficiency Wait. However, high doses of this substance can cause molybdenum poisoning, although this is fairly rare in humans. Fruitful results in agriculture Food and nutrition aren't the only areas where sodium molybdenum shines. Because it contains a high amount of molybdenum in an optimally oxidized state, it is very soluble in water and can be used in the fertilization process. Other similar compounds, such as ammonium molybdenum, did not show the same potential. In addition, sodium molybdate can also be used as a delivery container to provide additional nutrients to plants, which is why this substance is often seen in various agricultural practices. It is one of the few chemicals in the entire industry that can provide essential micronutrients and help effectively promote plant growth. Plants require relatively little molybdenum intake to grow better and healthier, and thanks to the water-based formula, the extra nutrients can be easily absorbed. In some cases, chemicals can be applied directly to soils found to be deficient in sufficient amounts of molybdenum, especially in acidic soils known to be deficient in this substance. Many people use sodium molybdate to combat the effects of fairly poor soil. Tianjin Yongda Chemical Reagent Co., Ltd. mainly produces and sells chemical reagents. Among them, sodium molybdate is one of our products. We have chemical reagents of various specifications and contents for you to choose from. At the same time, they are of good quality and reasonable price. If you need sodium molybdate or other chemical reagents, please contact us in time, we will quote and distribute for you at a fast speed.

Ammonium tungstate, ammonium metatungstate and ammonium paratungstate are all compounds of tungsten and can be used to make other tungsten compounds such as tungsten trioxide, blue tungsten oxide, purple tungsten oxide or tungsten dioxide. So what's the difference between them? 1. Definition Ammonium tungstate is a white crystalline powder, the English is Ammonium tungstate, the molecular formula is (NH4)10W12O41~xH2O, and the molecular weight is 3042.58. Ammonium metatungstate is a crystalline powder with a white or slightly yellow appearance. Its Chinese alias is ammonium metatungstate hydrate, English is ammonium (meta)tungstate hydrate ("AMT" for short), its molecular formula is H28N6O41W12, and its molecular weight is 2974.32. Ammonium paratungstate is a white crystalline powder, the English is Ammonium paratungstate (referred to as "APT"), the molecular formula is H8N2O4W, and the molecular weight is 283.9145. According to the different crystallization conditions, it can be divided into the following four types: 3(NH4)2O-7WO3-6H2O , 5(NH4)2-12WO3-5H2O, 5(NH4)2O-12WO3-5H2O and 5(NH4)2O-12WO3-11H2O. Ammonium Paratungstate Second, the nature Ammonium tungstate is soluble in water but insoluble in alcohol, loses four molecules of crystal water at 100°C, and has a solubility in water of less than 2% at 20°C. Ammonium metatungstate is soluble in water, and this characteristic is the most obvious difference between it and ammonium paratungstate. Ammonium paratungstate has two crystal structures: flake and needle, and it is slightly soluble in water, the solubility in water is less than 2% at 20 °C, and it is insoluble in alcohol. In addition, when heated to 220-280 °C, it will lose part of ammonia and crystal water, and convert it into AMT. When heated to above 600 °C, it will lose all ammonia and crystal water, and completely convert it into yellow tungsten oxide. Ammonium metatungstate Third, the production process The preparation method of ammonium tungstate is the neutralization method, that is, after alkali hydrolysis of wolframite, calcium tungstate is synthesized by the action of calcium chloride, and tungstic acid can be obtained by acid hydrolysis of calcium tungstate and then with ammonia water. Ammonium. The main production methods of ammonium metatungstate are as follows: (1) Using ammonium tungstate/sodium tungstate as raw materials, firstly prepare ammonium metatungstate solution by solvent extraction or ion exchange method, and then obtain AMT through evaporative crystallization. (2) Heating ammonium paratungstate to make it lose part of ammonia and crystal water, convert it into ammonium metatungstate solution, and then evaporate and crystallize to obtain AMT. (3) Neutralize ammonium paratungstate with acid to pH 3-4 under stirring in water to convert ammonium paratungstate into ammonium metatungstate solution, and then obtain AMT through evaporative crystallization. The main production methods of ammonium metatungstate are: (1) wolframite concentrate (scheelite concentrate) high pressure alkali (sodium hydroxide) cooking - solvent extraction (ion exchange) - evaporation crystallization method; (2) scheelite concentrate Caustic soda fluoride salt pressure cooking-ion exchange (solvent extraction)-evaporative crystallization method; (3) hydrochloric acid decomposition of scheelite concentrate-ammonia dissolution-evaporative crystallization method.

Uses of sodium molybdate: 1. For the preparation of molybdenum salts and dyes, pigments, catalysts, corrosion inhibitors, etc. 2. Used as metal corrosion inhibitor, descaling agent, bleach accelerator and skin and hair protectant. 3. Used as analytical reagent for alkaloid determination, dyestuff and pharmaceutical industry. 4. Precipitants, catalysts and molybdenum salts used in the manufacture of alkaloids, inks, fertilizers, molybdenum red pigments and lightfast pigments, as well as in the manufacture of flame retardants and metal inhibitors for pollution-free cold water systems, as well as for plating Zinc, polishing agents and chemical reagents. 5. Molybdate is an anodic oxide film type corrosion inhibitor, which forms a passivation film of ferrous-high iron-molybdenum oxide on the anode iron to play a role in corrosion inhibition.

Sodium tungstate is white and shiny flake crystal or crystalline powder, soluble in water, insoluble in ethanol, slightly soluble in ammonia. Weathered in the air. When heated to 100°C, it loses crystal water and becomes anhydrous. It reacts with strong acids (except hydrofluoric acid) to form water-insoluble yellow tungstic acid, reacts with phosphoric acid or phosphate to form phosphotungstic heteropolyacid complexes, and reacts with tartaric acid, citric acid, oxalic acid and other organic acids to form corresponding organic acid complexes compound. Tungsten trioxide reacts with sodium hydroxide, or uses tungsten concentrate and sodium hydroxide to pressure cook to generate sodium tungstate solution, which is purified, filtered, ion exchange and other processes to separate impurity components, and then evaporate and crystallize to obtain sodium tungstate product .

In industrial production, the use of sodium pyrophosphate is very common. In fact, in the previous stage, some people in my country used sodium pyrophosphate, but at that time, hemp shoes and other products were used. Most of them used forage grass as the key raw material, such as corn stalk and corn in industrial production. The use of sodium phosphate is very common. In fact, in the previous stage, some people in my country used sodium pyrophosphate, but at that time, hemp shoes and other products were used. Most of them used forage grass as the key raw material, such as corn stalk and corn in industrial production. The use of sodium phosphate is very common. In fact, in the previous stage, some people in my country used sodium pyrophosphate, but at that time, hemp shoes and other products were used. Most of them used forage grass as the key raw material, such as corn stalk and corn in industrial production. The use of sodium phosphate is very common. In fact, in the earlier stages, some people in my country used sodium pyrophosphate, but they used hemp shoes and other products at that time. Most of them used forage grass as the key raw material, such as corn stalks, corn

Sodium molybdate dihydrate is sodium molybdate, the alias of sodium molybdate is sodium molybdate dihydrate, and sodium molybdate is dihydrate. Sodium molybdate is a new type of water treatment agent that is widely used at present. In order to obtain better corrosion inhibition effect, Jiangsu sodium molybdate manufacturers often use molybdate in combination with polyphosphate, gluconate, zinc salt and benzotriazole, which can not only reduce the usage of molybdate, but also Moreover, the corrosion inhibition effect can be improved, and the dosage of molybdate after compounding is reduced from 200-500 mg/L to 4-6 mg/L. In the process of molybdate film formation, dissolved oxygen must be present, without calcium ions (or other divalent metal ions). Molybdate has high thermal stability and can be used in circulating water systems with high heat flux density and local overheating. The maximum allowable concentration of soluble molybdenum compound aerosol is 2mg/m, and the dust is 4mg/m. Pay attention to moisture. It must be protected from rain and sunlight during transportation. Uses: used in the manufacture of alkaloids, inks, fertilizers, molybdenum red pigments and lightfast pigments as precipitants, catalysts, molybdenum salts, as well as in the manufacture of flame retardants and metal inhibitors for pollution-free cold water systems, as well as for plating Zinc, polishing agents and chemical reagents.

Horizontal furnace, also known as continuous sintering furnace, put molybdenum bars in the charging boat, sodium tungstate put 12-18kg of molybdenum bars in each boat (too much material is easy to collapse in high temperature area), evenly sprinkle a small amount between molybdenum bars Zirconium oxide powder to prevent the sintered molybdenum strips from sticking to each other. In the process of continuous (or intermittent) pushing the boat, the molybdenum strips go through the low temperature zone, the high temperature zone and the cooling end in sequence, and are finally taken out from the discharge end. Reasonable design of heating belt temperature curve and control of boat speed can ensure the correct sintering system of molybdenum bars. To control a reasonable sintering heating rate, the purpose of Jiangsu sodium molybdate manufacturer is to fully volatilize the impurities in the molybdenum bar before densification, to prevent the cracking of the sintered molybdenum bar, and to obtain high-quality molybdenum bar. According to the specifications of molybdenum strips and the particle size of molybdenum powder, the sintering temperature in the high temperature zone is 1700-1850℃, and the sintering time is 3-5h. The horizontal tungsten wire (or tungsten rod) muffle furnace used in China can generally sinter molybdenum rods of 80-100kg per day and night. Vertical tungsten rod (or tungsten mesh) furnace and intermediate frequency induction furnace are intermittent sintering furnaces. Molybdenum bars are loaded in the cold furnace state, generally 70-120kg per furnace. In order to reduce sintering bending, molybdenum wires can be used to sinter several molybdenum bars. *** together (especially the induction furnace sintering can only be charged vertically, it is easy to bend). After the furnace cover is covered, pass H2 (or vacuumize), adjust the power supply of the furnace, and heat up, keep warm, cool down and cool with the furnace according to the process regulations. The sintering process curve is shown in Figure 9-26b. The power supply time of the whole furnace period is about 1Oh. After the power supply is cut off, the hydrogen and water are stopped after about 10 to 12 hours (or the vacuum pump is stopped after 3 hours and then H27 to 8 hours), the furnace cover is opened, and the sintered molybdenum bars are taken out. The holding temperature and time are the same as those of the horizontal sintering method.