耐火与石灰 ›› 2024, Vol. 49 ›› Issue (2): 27-30.

• 综述 • 上一篇    下一篇

利用石灰石制备高活性石灰的试验研究

  

  1. (1. 包钢集团矿山研究院, 包头 014000;
    2. 东北大学,沈阳 110819)
  • 出版日期:2024-04-10 发布日期:2024-04-28

An experimental study on preparation of high activity lime by#br# calcination of limestone#br#

  1. (1. Mining Research Institute of Baotou Steel(Group)Corp.,Baotou 014000,China;
    2. Northeastern University,Shenyang 110819, China)
  • Online:2024-04-10 Published:2024-04-28

摘要: 活性高的石灰对节能减排以及“碳达峰、碳中和”具有重要作用,但是目前的活性石灰已经难以满足要求,
高活性石灰生产技术越来越受到重视。本文针对乌海包钢矿业公司海南矿石灰石,分析了原料特性,研究了制备高
活性石灰的工艺技术。研究结果表明:该矿业公司的石灰石主要矿物为方解石、白云石、石英、铁矿物,其分解特
性与粒度有较大关系;利用该种石灰石可以煅烧高活性石灰,其最优条件为:粒度0 . 1 2 5 ~ 0 . 6 3 m m,煅烧温
度1 000 ~ 1 050 ℃,煅烧时间30 ~ 40 min。该条件下煅烧的高活性石灰晶粒细小,孔隙多,活性高。

关键词: 石灰石, 高活性石灰, 氧化钙, 煅烧

Abstract: High activity lime plays an important role in energy conservation and emission
reduction,as well as in peak carbon emissions and carbon neutrality. Since the current active lime
has been found difficult to meet the requirements,increasingly more importance is being attached
to the production technology of high activity lime. This paper analyzes the characteristics of the
limestones from the Wuhai Hainan Mining Company of Baotou Steel Group and researches the
process technology for preparing high activity lime. The research results show that the limestones
from the mining company mainly include calcite,dolomite,quartz and iron minerals,and their
decomposition characteristics are greatly related to their particle size. This type of limestone can be
used to calcine highly active lime,especially,the limestones with a particle size of 0.125 ~ 0.63
mm at a calcination temperature of 1 000 ~ 1 050 ℃ for 30 ~ 40 minutes. The highly active lime
calcined under those conditions features fine grains,multiple pores,and high activity.

Key words: Lmestone, High activity lime, Calcium oxide, Calcination

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