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
研究与开发

静爆剂中氧化钙在不同煅烧条件下的性能研究

  • 杜光钢 ,
  • 何童 ,
  • 徐泽辉 ,
  • 刘磊
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  • 1.昆明理工大学国土资源学院,云南 昆明 650093
    2.昆明理工大学公共安全与应急管理学院,云南 昆明 650093
    3.云南省教育厅爆破新技术工程研究中心,云南 昆明 650093
杜光钢(1996— ),男,硕士研究生,主要从事工程爆破方面研究;E-mail:dgg0705@163.com
刘磊(1981— ),男,博士,教授,硕士生导师,主要从事矿山开采、工程爆破、工业炸药方面研究;E-mail:546027603@qq.com

收稿日期: 2022-11-21

  网络出版日期: 2023-10-16

基金资助

国家自然科学基金资助项目(11862010);云南省教育厅科学研究基金资助项目(2020Y0088)

Study on properties of calcium oxide in SCA under different calcination conditions

  • DU Guanggang ,
  • HE Tong ,
  • XU Zehui ,
  • LIU Lei
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  • 1.Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China
    2.Faculty of Public Security and Emergency Management,Kunming University of Science and Technology,Kunming 650093,China
    3.New Blasting Technology Engineering Research Center of Yunnan Provincial Education Department,Kunming 650093,China

Received date: 2022-11-21

  Online published: 2023-10-16

摘要

利用KRX-17B型高温电炉在真空环境中不同煅烧条件下煅烧方解石烧制氧化钙熟料,水化活性测试显示煅烧温度由1 300 ℃降到1 200 ℃时氧化钙水化反应速率“跳跃性”变化,通过钨灯丝扫描电子显微镜(SEM)观察不同煅烧条件氧化钙熟料微观形貌的演变过程并进行分析,发现煅烧温度越高、恒温时间越久的氧化钙熟料基体由疏松、多孔、团聚变得严格致密。“热效应”解释了温度对氧化钙抗水化性、膨胀性能的影响。“外管法”测量配制的卷装静态破碎剂膨胀压力显示,恒温时间一定,当熟料煅烧温度由1 300 ℃升高到1 500 ℃时,配制的卷装静态破碎剂膨胀压增大了25.6 MPa;煅烧温度一定,当恒温时间由5 h延长至25 h后,配制的卷装静态破碎剂膨胀压增大了23.4 MPa。

本文引用格式

杜光钢 , 何童 , 徐泽辉 , 刘磊 . 静爆剂中氧化钙在不同煅烧条件下的性能研究[J]. 无机盐工业, 2023 , 55(10) : 35 -41 . DOI: 10.19964/j.issn.1006-4990.2022-0691

Abstract

Calcite was calcined by using KRX-17B high temperature electric furnace vacuum environment under different calcination conditions to fire calcium oxide clinker,the hydration activity test showed that when the calcination temperature was decreased from 1 300 ℃ to 1 200 ℃,the calcium oxide hydration reaction rate was changed like“jumping”,the evolution of calcium oxide clinker micromorphology under different calcination conditions were observed and analyzed by tungsten filament scanning electron microscope(SEM),and it was found that the higher the calcination temperature and the longer the constant temperature time,the calcium oxide clinker matrix changed from loose,porous and agglomeration to strict and dense.“Thermal effect”could explain the effect of temperature on calcium oxide′s hydration resistance and swelling properties.The expansion pressure of the prepared roll static crusher measured by“outer pipe method” showed that the constant temperature time was constant,when the clinker calcination temperature was increased from 1 300 ℃ to 1 500 ℃,the expansion pressure of the prepared roll crusher was increased by 25.6 MPa.The calcination temperature was certain,when the constant temperature time was extended from 5 h to 25 h,the expansion pressure of the prepared roll static crusher was increased by 23.4 MPa.

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