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[Chemical Knowledge]：The production and manufacturing method and process of pure calcium oxide.

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The manufacturing method
of pure calcium oxide
In the field of raw materials for chemical production, pure calcium oxide is a very important substance and has a wide range of uses. In order to better meet the needs of the chemical industry, it is very important to study the manufacturing method of pure calcium oxide. This article will introduce an effective method of manufacturing pure calcium oxide.

1. Raw Material Preparation

The main raw material for the manufacture of pure calcium oxide is limestone, the main component of which is calcium carbonate. The selection of high-quality limestone raw materials is the key to ensure the quality of the final product. In the process of raw material preparation, limestone needs to be crushed and screened to obtain a suitable particle size. Limestone

2. calcination
is decomposed into calcium oxide and carbon dioxide after calcination. The calcination process is a key step in the manufacture of pure calcium oxide, and it is necessary to control the calcination temperature and time to ensure complete decomposition. At the same time, in order to prevent product agglomeration, it is necessary to maintain proper ventilation and turning.

3. digestion

calcined lime (calcium oxide) reacts with water to produce calcium hydroxide, a process called digestion. In the process of digestion, it is necessary to control the amount of water and reaction time to ensure the formation of calcium hydroxide.

4. carbonization

calcium hydroxide reacts with carbon dioxide to produce calcium carbonate and water, a process called carbonization. In the carbonization process, it is necessary to introduce an appropriate amount of carbon dioxide gas, and control the reaction temperature and time to obtain high-quality calcium carbonate products.

5. Washing and Drying

The carbonized calcium carbonate product needs to be washed to remove impurities attached to the surface. The washed calcium carbonate product needs to be dried to obtain the final pure calcium oxide product.

6. Crushing and Sieving

The dried pure calcium oxide product needs to be crushed and sieved to obtain the desired particle size distribution.

Through the above steps, a pure calcium oxide product of high quality can be manufactured. However, in the actual production process, the following matters need to be paid attention to:

1. Strictly control the process parameters of each step to ensure product quality;
2. Keep the equipment clean to prevent product contamination;
3. Strengthen the production process Safety protection measures to ensure the safety of employees;
4. Monitor and analyze the production process to find and solve problems in time.

In summary, the process for the manufacture of pure calcium oxide involves a number of steps and control of process parameters. In order to ensure product quality and production efficiency, it is necessary to strictly follow the operating procedures for production, and continuously optimize the production process to improve the degree of production automation. At the same time, strengthen the quality management and safety protection measures in the production process to ensure the quality of products and the safety of employees. Only in this way can we better meet the demand for pure calcium oxide in the field of chemical production and promote the development of related industries.

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