作者：GUO Zongqi1BI Deli1MA Ying2SUN Zhenlin2

作者单位：1. Yingkou Jindai Technologies,Jiachen Group 2. RHI Refractories(Dalian) Co., Ltd.

刊名：China’s Refractories

ISSN：1004-4493

出版年：2020-09-15

卷：29

期：3

起页：7-12

止页：

分类号：TQ175.713

语种：英文

关键词：

内容简介

It is hard to manufacture high purity, dense sintered-magnesia from natural magnesite in the prevailing process of calcining and sintering, for two reasons: a) impurity, and b) low sintering activity of coarse-grained magnesite. In this paper, 95% Mg O magnesite was used as the starting material and finally magnesia of high density(3.47 g · cm-3) and high purity（98% Mg O） was obtained after the flotation purification and a three-step sintering process. An industrial scale of the beneficiation system of natural magnesite was introduced for magnesite purification. In lab experimental, the three-step sintering process was implemented by calcining, hydrating, re-calcining and sintering, which has proven the possibility of densified magnesia from natural magnesite.