SIKA-058 JAV The process of extraction and refining of calcium carbonate involves the following steps: 1. **Mining**: Calcium carbonate is extracted from quarries and mines. It can be found in the form of limestone, chalk, or marble. The material is extracted using heavy machinery and explosives. 2. **Crushing**: The extracted material is then crushed into smaller pieces using a jaw crusher or a cone crusher. This reduces the size of the material and makes it easier to handle. 3. **Grinding**: The crushed material is then ground into a fine powder using a ball mill or a similar grinding machine. This process results in a fine calcium carbonate powder. 4. **Calcination**: In this step, the calcium carbonate powder is heated at a high temperature of 900–1000°C. This causes the carbonate to decompose into calcium oxide and carbon dioxide. The reaction is as follows: ``` CaCO3 → CaO + CO2 ``` The calcium oxide is then used for further processing. 5. **Purification**: The calcium oxide is then purified by dissolving it in water to form calcium hydroxide. The calcium hydroxide is then filtered to eliminate any impurities. 6. **Carbonization**: The calcium hydroxide is then reacted with carbon dioxide gas in a chemical reaction. This results in the creation of pure calcium carbonate. The reaction is as follows: ``` Ca(OH)2 + CO2 → CaCO3 + H2O ``` 7. **Drying**: The resulting calcium carbonate is then dried to get rid of any moisture and obtained in pure form. 8. **Grinding**: The calcium carbonate is then ground into a fine powder to be used in various applications. 9. **Packaging**: The finished product is then packaged into bags or tubs for distribution and use. These processes need to be carried out carefully to ensure that the calcium carbonate is of high quality and suitable for various industries. - Cuplikan Gratis dan Subtitle Bahasa Indonesia srt.

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