Beneficiation of Brazilian diatomite for the filtration application industry

被引：11

作者：

França, SCA

Millqvist, MT

Luz, AB

机构：

[1] Cidade Univ, Ctr Mineral Technol CETEM, Rio De Janeiro, Brazil

[2] Lulea Univ Technol, Div Mineral Proc, Lulea, Sweden

来源：

MINERALS & METALLURGICAL PROCESSING | 2003年 / 20卷 / 01期

关键词：

diatomite; filtration; sedimentation; dewatering; calcination;

D O I：

10.1007/BF03403114

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Laboratory experiments were performed on a Brazilian diatomite from Bahia State to produce an industrial product for use as a filter aid. Bench and pilot-plant tests were conducted. The tests consisted of diatomite desegregation, organic matter and clay removal, filtration, drying and calcination. Calcination temperature and sodium carbonate addition influenced diatomite particle size distribution. Optimum filtration rates for calcined products were obtained at 900degreesC and 47 minute residence time with 3% (w/w) of sodium carbonate addition. The resultant products met the specifications for filter aids.

引用

页码：42 / 46

页数：5