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[Chemical Knowledge]：Production and manufacturing method and process of potassium chloride

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The manufacturing method
of potassium chloride
1. Introduction

potassium chloride is an important inorganic chemicals, widely used in agriculture, medicine, food and other fields. In the field of raw materials for chemical production, a method for producing potassium chloride has attracted much attention. This article will introduce the manufacturing method of potassium chloride, including raw material selection, production process, equipment selection and so on.

2. raw material selection

potassium chloride manufacturing raw materials are mainly potassium ore and hydrochloric acid. Potassium ores mainly include potassium feldspar and carnallite, among which potassium feldspar contains high potassium content, but there are many impurities, which can only be used after purification. As an auxiliary raw material for the production of potassium chloride, hydrochloric acid requires high purity and less impurities.

3. production process
The production process of
potassium chloride mainly includes the following steps:

1. Purification of potassium ore: After crushing and grinding potassium ore, the impurities are removed by flotation and magnetic separation to obtain concentrate with high potassium content.

2. acidolysis reaction: the concentrate and hydrochloric acid are mixed according to a certain proportion and heated to a certain temperature, so that the potassium in the potassium ore reacts with the chloride ion in the hydrochloric acid to generate potassium chloride.

3. crystallization separation: the reaction solution is cooled to a certain temperature, potassium chloride is crystallized and precipitated, and the potassium chloride product is obtained by centrifugal separation or filtration.

4. Dry packaging: After the potassium chloride product is dried, it is packaged to obtain the finished potassium chloride.

4. equipment selection

In the production process of potassium chloride, the equipment that needs to be used mainly includes crusher, ball mill, flotation machine, magnetic separator, reaction kettle, crystallization tank, centrifuge, dryer, etc. When selecting equipment, it is necessary to comprehensively consider factors such as production scale, product quality requirements, energy consumption, etc., and select equipment with stable performance and convenient operation and maintenance.

5. production precautions

1. Strictly control the quality of raw materials to ensure high purity of raw materials and less impurities to ensure product quality.

2. During the acidolysis reaction, it is necessary to control the reaction temperature and time to avoid excessive reaction or incomplete reaction.

3. In the crystallization separation process, it is necessary to control the cooling rate and crystallization temperature to obtain high-quality potassium chloride products.

4. In the production process, it is necessary to strengthen equipment maintenance and maintenance to ensure the normal operation of equipment and improve production efficiency.

6. conclusion

potassium chloride manufacturing method involves the selection of raw materials, production process, equipment selection and other aspects. In the production process, it is necessary to strictly control the quality of raw materials, reaction conditions, crystallization and separation and other process parameters to ensure product quality and production efficiency. At the same time, strengthening equipment maintenance and maintenance and improving equipment operation efficiency are also important measures to ensure smooth production.

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