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 ›› 2013, Vol. 45 ›› Issue (8): 36-.

• 论文 • 上一篇    下一篇

浏阳白云石制轻质碳酸镁 煅烧和碳化工艺研究

葛鹤松1,李 舟2,蔡有兴3   

  1. 1.浏阳市古港镇磊狮山采石场,湖南长沙 410300;2.湖南金马硅业有限公司;3.国土资源部长沙矿产资源监督检测中心
  • 出版日期:2013-08-10 发布日期:2013-08-14

Study on technological process of calcining and carbonation for production of light magnesium carbonate from dolomite

Ge Hesong1,Li Zhou2,Cai Youxing3   

  1. 1.Liuyang Gugangzhen Shishan Quarry,Changsha 410300,China;2.Hunan Jinma Silica Co.,Ltd.;
    3.Changsha Supervision and Inspection Center for Mining Resources, Ministry of Land and Resources
  • Published:2013-08-10 Online:2013-08-14

摘要: 考察了白云石煅烧工艺对煅烧白云石活性度的影响。结果表明,对于粒度为5~15 mm、15~20 mm、20~30 mm的白云石,其煅烧温度应分别控制在995、1 005、1 020 ℃。粒度为15~20 mm的白云石,在995 ℃下的煅烧时间为60~100 min。通过碳化工艺实验,优选出较合理的碳化工艺条件,即碳化在加压状态下进行,压力控制在 0.30 MPa以上、温度控制在35 ℃ 以下、浆液中氧化镁质量浓度控制在10~12 g/L、碳酸化反应时间为50 min。

关键词: 白云石, 轻质碳酸镁, 加压碳化

Abstract: Influence of calcining technology on the activity of calcined dolomite was investigated.Results showed that the calcining temperatures should be controlled at 995 ℃,1 005 ℃,and 1 020 ℃ for the dolomite with particle size of 5~15 mm, 15~20 mm,and 20~30 mm,respectively;at the calcining temperature of 995 ℃,calcination time for the dolomite with grain size of 15~20 mm was at 60~100 min.By the test of carbonation,the reasonable technological conditions were optimized,i.e. the carbonation was conducted under pressure and the pressure was controlled above 0.3 MPa;the temperature was below 35 ℃, the MgO mass concentration in the slurry was 10~12 g/L,and the carbonation time was 50 min.

Key words: dolomite, light magnesium carbonate, pressure carbonation

中图分类号: