无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2016, Vol. 48 ›› Issue (5): 55-.

• 论文 • 上一篇    下一篇

利用菱镁矿粉状尾矿制备氧化镁工艺研究

王 政,冯爱玲,赵 磊,林江顺   

  1. 北京矿冶研究总院,北京 100160
  • 出版日期:2016-05-10 发布日期:2016-05-16

Study on preparation process of magnesium oxide from pulverous magnesite tailings

 WANG   Zheng, FENG  Ai-Ling, ZHAO   Lei, LIN  Jiang-Shun   

  1. Beijing General Research Institute of Mining and Metallurgy,Beijing 100160,China
  • Published:2016-05-10 Online:2016-05-16

摘要: 针对制备高纯镁砂的菱镁矿粉状尾矿,采用菱镁矿精制-压球-轻烧工艺,可直接得到合格的镁砂产品。在菱镁矿精制过程中,添加球团添加剂,使后续工艺轻烧过程中菱镁矿保持球团形貌特征,避免球团大量粉化造成竖窑堵塞。通过冲击测试得到的轻烧球团强度,即从0.5 m坠落次数可达10次,粉体活性<230 s,烧失率<0.1%。

关键词: 菱镁矿, 精制, 压球, 轻烧

Abstract: Aiming at the pulverous magnesite tailings,a new process,refining-briquetting-sintering,was introduced to pro- duce high purity magnesia products.In refining process of magnesite,the use of briquetting additive could preserve the profile of magnesite pelletizing,which solved the problem of ventilation blockage in shaft kiln due to the pulverization of large amount of pelletizings.The prepared magnesia showed 10 times drop in impact test from 0.5 m,the activity of powders was below 230 s and the loss on ignition was below 0.1%.

Key words: magnesite, refining, briquetting, sintering

中图分类号: