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Purification of natural calcium ore
申请号	JP11452588	申请日	1988-05-11	公开(公告)号	JPH01104359A	公开(公告)日	1989-04-21
申请人	Ecc Internatl Ltd;			发明人	KURISUTOFUAA ROBIN RANDON GOOR;
摘要	PURPOSE: To remove discoloring impurities by treating a suspension contg. the dried and comminuted mineral of calcium carbonate-contg. mineral with a capturing agent for the cation-contg. discoloring impurities contg. >=1 long chain alkyl groups having 10-24C. CONSTITUTION: The calcium carbonate-contg. mineral is mixed with water and dispersant to prepare the suspension contg. 60 to 80 wt.% dry mineral. The suspension is comminuted to obtain the products contg. =1 long chain alkyl groups having 10-24C, by which the discoloring impurities are removed. Next, the formed underflow product is further comminuted, by which the material in which >=40 wt.% of the particles have a spherical diameter of
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