低品位石膏提纯与增白实验研究  

Experimental Research on Purification and Whitening of Low-grade Gypsum

作　　者：张巨松[1] 高飞[1] 安会勇[1] 回志峰[1] 

机构地区：[1]沈阳建筑大学材料学院,沈阳110168

出　　处：《非金属矿》2004年第6期44-46,共3页Non-Metallic Mines

摘　　要：利用石膏原矿中各种杂质矿物的硬度、粒度差异 ,通过破碎、分级方法可有效提纯石膏 ,制成的半水石膏白度由 62 .6%提高到69.3 %。在此基础上研究了延长石膏的研磨时间即提高其细度以及外掺白度较高的惰性填料等 ,都可提高石膏的白度 ,分别达到 75 .2 %和74.7% 。Based on the hardness and grain difference of all minerals in the gypsum ores,improve whiteness from 62.6% to 69.3% by fragmentation and grinding-classification.And improve whiteness extently by increasing grinding time or adding inertia material of high whiteness,so the whiteness add to 75.2% and 74.7%.But the compression of gypsum will drop up.

关 键 词：提纯 半水石膏 增白 研磨时间 白度 低品位 细度 原矿 长石 破碎 

分 类 号：TD973.2[矿业工程—选矿] TQ177[化学工程—硅酸盐工业]