Manufacturing Method of Manganese Sulfate
I. Introduction
Manganese sulfate is an important inorganic chemical widely used in many fields such as agriculture, medicine, ceramics, printing and dyeing. As a raw material for chemical production, the manufacturing method of manganese sulfate has attracted much attention. In this paper, we will introduce the manufacturing method of manganese sulfate, including raw material preparation, reaction process and post-treatment.
2. Raw material preparation
The following raw materials are needed for the manufacture of manganese sulfate:
1. Manganese ore: Manganese ore is the main raw material for the production of manganese sulfate, which contains high manganese element. Common manganese ores are rhodochrosite, manganese silicate ore, etc.
2.
2. Sulfuric acid: Sulfuric acid is the reactant in the production of manganese sulfate, and industrial sulfuric acid with a concentration of 93%~98% is generally used.
3. Reaction process
The manufacture of manganese sulfate mainly adopts acid leaching method, the specific steps are as follows:
1. Manganese ore crushing: crushing manganese ore to a certain particle size, in order to increase the contact area with sulfuric acid. Acid leaching: the crushed manganese ore is mixed with sulfuric acid according to a certain ratio, heated to a certain temperature, and acid leaching reaction is carried out. During the acid leaching process, the manganese element in the manganese ore reacts with the sulfuric acid to form manganese sulfate and water.
3. Filtration: After the acid leaching reaction, solid impurities and manganese sulfate solution are separated by filtration.
4. Neutralization: Appropriate amount of alkaline absorbent is added to the manganese sulphate solution to neutralize the acid in it and produce manganese sulphate precipitate.
5. Centrifugal separation: Separate the manganese sulfate precipitate from the mother liquor by centrifugal machine to get manganese sulfate wet material.
4. Post-treatment
In order to get high quality manganese sulphate products, the following post-treatment steps are also needed:
1. Washing: Wash the manganese sulphate wet material several times with pure water in order to remove the impurities and residual water.
2. Drying: The washed manganese sulfate wet material is dried to obtain manganese sulfate dry powder.
3. Screening: the dried manganese sulfate dry powder is screened to meet the requirements of different fields on manganese sulfate particle size.
4. Packing: Pack the sieved manganese sulfate products for transportation and storage.
V. Precautions
In the manufacturing process of manganese sulfate, the following matters need to be paid attention to:
1. Control the temperature and time of the acid leaching reaction to improve the yield and purity of manganese sulfate.
2. Select suitable alkaline absorbent for neutralization to avoid introducing new impurities.
3. Keep the equipment clean and dry during washing and drying to avoid contamination of the product.
4. During sieving and packaging, follow the relevant standards and specifications to ensure the quality and safety of the product.
VI.CONCLUSION
Manganese sulfate, as an important inorganic chemical, has a wide range of applications in agriculture, medicine, ceramics, printing and dyeing and other fields. In this paper, the manufacturing method of manganese sulfate is introduced, including the preparation of raw materials, the reaction process, and post-treatment. In the actual production process, it is necessary to pay attention to such matters as controlling the reaction conditions, selecting suitable raw materials and equipment, and keeping the production environment clean and dry to ensure the quality and safety of the product.
