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A PROCESS FOR THE SEPARATING MAGNESIUM CARBONATE FROM DOLOMITE/DOLOMITIC LIMESTONES

机译:从白云石/白云岩石灰岩中分离碳酸镁的方法

摘要

A process for separating magnesium carbonate from dolomite/dolomitic limestone ore which comprises in crushing the ore, subjecting the ground ore to the step of partial calcination by heating at a temperature between 700 to 850 degree Celsius, preparing a slurry of the partially calcined material subjecting the slurry to the step of carbonation by passing carbon dioxide gas through the slurry and at a controlled pressure between 4 to 4.5 kilogram/centimeter square to obtain magnesium carbonate and calcium carbonate, filtering calcium carbonate therefrom and calcium carbonate, filtering calcium carbonate therefrom and finally heating the filtrate to obtain magnesium carbonate.
机译:一种从白云石/白云质石灰石矿石中分离碳酸镁的方法,该方法包括在压碎矿石中,通过在700至850摄氏度之间的温度下加热,将磨碎的矿石进行部分煅烧的步骤,制备一种将部分煅烧的材料进行浆化的浆液。通过使二氧化碳气体通过该浆料并在4-4.5kg / cm 2的控制压力下使该浆料进入碳酸化步骤,以获得碳酸镁和碳酸钙,从中过滤碳酸钙和碳酸钙,从中过滤碳酸钙,最后加热滤液以获得碳酸镁。

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