静态破碎剂水化释压升温过程的影响因素分析  

Analysis of External Influence Factors and Hydration Reaction of Static Crushing Agent

作　　者：刘玉法 黄辉 杜光钢 齐文超 冉秋硕 梁潇 刘磊[1] LIU Yufa;HUANG Hui;DU Guanggang;QI Wenchao;RAN Qiushuo;LIANG Xiao;LIU Lei(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Jinghong Longxin Mining Co.,Ltd.,Jinghong 666112,Yunnan,China;Kunming Nonferrous Metallurgical Design and Research Institute Co.,Ltd.,Kunming 650093,Yunnan,China;School of Public Safety and Emergency Management,Kunming University of Science and Technology,Kunming 650093,Yunnan,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]景洪市龙鑫矿业有限责任公司,云南景洪666112 [3]昆明有色冶金设计研究院股份公司,云南昆明650093 [4]昆明理工大学公共安全与应急管理学院,云南昆明650093

出　　处：《矿产保护与利用》2024年第4期41-47,共7页Conservation and Utilization of Mineral Resources

基　　金：云南省重大科技专项项目(202202AG050014);云南省教育厅科学研究基金项目(2020Y0088)。

摘　　要：为探究影响爆破用静态破碎剂水化反应过程中膨胀压力与温度变化的外部因素,基于多水平正交实验进行静态破碎剂的配方优化设计,利用“外管法”测试静态破碎剂膨胀压力,使用温度计探针实时监测破碎剂水化反应温度。从不同水灰比、不同环境温度、不同拌合水温三个方面对静态破碎剂进行水化反应分析研究,结果表明:静态破碎剂反应的峰值温度随水灰比的增加而先增加后降低;随环境温度以及拌合水温的升高而升高,整体水化反应温度经历“平缓—急剧升温—快速降温”的过程;静态破碎剂在测试钢管中的峰值压力随水灰比增大而呈现先增大后减小的趋势,随环境温度升高而升高,但温度过高易导致破碎剂喷孔使膨胀压急剧降低直至失去膨胀力。适当提高拌合水温对静态破碎剂水化反应起促进作用,拌合水温不宜高于35℃。In order to explore the external factors affecting the expansion pressure and temperature changes during the hydration reaction of static crusher,the formula optimization design of static crusher was carried out based on multi−level orthogonal test,the expansion pressure of static crusher was tested by using the“outer tube method”,and the hydration reaction temperature of crusher was monitored in real time by thermometer probe.The results showed that the peak temperature of the static crusher increased first and then decreased with the increase of the water−cement ratio.With the increase of ambient temperature and mixing water temperature,the overall hydration reaction temperature undergo a process of“gentle−sharp heating−rapid cooling”.The peak pressure of static crusher in the test steel pipe increases first and then decreases with the increase of water−cement ratio,and increases with the increase of ambient temperature,but too high temperature can easily lead to the expansion pressure of the crusher nozzle to decrease sharply until it loses its expansion force.Appropriately increasing the mixing water temperature can promote the hydration reaction of the static crusher,and the mixing water temperature should not be higher than 35℃.increase the mixing water temperature on the static crusher hydration reaction to promote the role of mixing water temperature should not be higher than 35℃.

关 键 词：氧化钙 静态破碎剂 膨胀压力 水化反应 

分 类 号：TD235[矿业工程—矿井建设]