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US09505629B2 Method of preparing calcium carbonate using direct carbonation reaction 有权
使用直接碳酸化反应制备碳酸钙的方法

Method of preparing calcium carbonate using direct carbonation reaction
Abstract:
Disclosed is a method of preparing calcium carbonate using a direct carbonation reaction. The method includes dissolving fuel gas desulfurization gypsum into an ammonia solution, performing a filtering process after making a carbonation reaction by feeding carbon dioxide into the ammonia solution in which the fuel gas desulfurization gypsum is dissolved, and performing a filtering process after precipitating the calcium carbonate by maintaining a filtered solution in a stationary state.
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