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[Chemical Knowledge]：Production and manufacturing method and process flow of ammonium heptamolybdate

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The manufacturing method
of ammonium heptamolybdate
1. Introduction

Ammonium heptamolybdate is an important chemical raw material, widely used in metallurgy, chemical industry, aerospace, military and other fields. Due to its unique physical and chemical properties, the manufacturing method of ammonium heptamolybdate has attracted much attention. This article will introduce in detail the manufacturing method of ammonium heptamolybdate, including raw material preparation, reaction process, post-treatment and other links.

2. Raw Material Preparation

1. Ammonium molybdate: Ammonium molybdate is the main raw material for the manufacture of ammonium heptamolybdate, which should be analytically pure or chemically pure reagents to ensure the purity of the product.
2. sulfuric acid: sulfuric acid as a catalyst for the reaction, should choose the appropriate concentration of industrial grade sulfuric acid.
3. Deionized water: used to prepare solutions and wash products to ensure the purity of products.

3. reaction process

1. preparation solution: ammonium molybdate dissolved in deionized water, made of a certain concentration of ammonium molybdate solution. At the same time, sulfuric acid is added to deionized water to prepare a sulfuric acid solution with a certain concentration.
2. Mixing reaction: mix ammonium molybdate solution with sulfuric acid solution, control a certain reaction temperature and time, make ammonium molybdate fully react with sulfuric acid, and generate ammonium heptamolybdate.
3. Crystallization: After the reaction is completed, the mixture is cooled and crystallized to obtain crystals of ammonium heptamolybdate.

4. post-treatment

1. washing: washing ammonium heptamolybdate crystals with deionized water to remove impurities attached to the surface.
2. Drying: The washed ammonium heptamolybdate crystals are dried to obtain a dried ammonium heptamolybdate product.
3. Packaging: Pack the dried ammonium heptamolybdate product and store it in a cool and dry place.
Precautions for
5.

1. Strictly control the reaction temperature and time to avoid the generation of by-products or affect product quality.
2. During the washing and drying process, the appropriate temperature and time should be controlled to avoid product decomposition or deterioration.
3. Pay attention to safety during the production process, avoid contact with acidic solution and high temperature equipment, and prevent burns and corrosion.

6. conclusion The manufacturing method of

ammonium heptamolybdate includes raw material preparation, reaction process, post-treatment and other aspects, in which reaction temperature and time are the key factors affecting product quality. By strictly controlling the process parameters of each link, ammonium heptamolybdate with high purity and stable quality can be obtained, which provides important raw material guarantee for metallurgy, chemical industry, aerospace, military and other fields.

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