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Calcium Carbonate Production

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General Process Information

Limestone is converted into calcium oxide and carbon dioxide by implies of calcination at temperature ranges in excess of 900°C. To ensure a large level of purity, the calcination process is completed making use of natural gas. After the calcined lime continues to be slaked with water, the resulting milk of lime is purified and carbonated with the carbon dioxide acquired from your calcination method. Following total carbonation, a suspension of CaCO3 outcomes. A cake is then acquired by filtration. This filter cake is then dried and subsequently de-agglomerated in grinders. The supplies are transported by feeder for the grinding chamber by means of the quill shaft spirally, and then enter a first mill warehouse. Following getting grinded coarsely in the initial warehouse, the material then enters into the second mill warehouse for regrinding. The above motion repeats regularly until the dimension of components reaches the needed fineness. While in the end, the powder is discharges by output materials board along with the end merchandise are completed.
Ultrafine PCC grades are reacted with fatty acids before filtration. The fineness of the grain, in addition to the crystal type (aragonite, calcite), is controlled by temperature, concentration of reactants and time. Based on the chemical composition of the milk of lime employed and the purifying stages in the course of production different types of final material is produced to be used in different industrial applications.

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