摘要
为了解决稳定的浮选精煤泡沫给精煤的储存、转运和脱水带来的系列工业生产问题,进行了硅油消泡剂(G)和乳化烃类油消泡剂(R)对浮选精煤泡沫的消泡试验,考察了消泡剂的添加方式和用量对浮选精煤消泡效果的影响,以及消泡剂残留于循环水对浮选流程的影响。结果表明,消泡剂以喷淋方式加入更能有效增加消泡速率和消泡程度;随着消泡剂用量的增加,消泡效果越好,且硅油消泡剂优于乳化烃类油消泡剂;循环水中较低用量消泡剂的残留对浮选影响较小,当残留量较大时,硅油消泡剂降低了浮选选择性,抑制了浮选,而乳化烃类油消泡剂有利于浮选。综合考虑,建议使用低用量的乳化烃类油消泡剂,以喷淋方式对浮选精煤进行消泡。
In order to solve a series of industrial production problems of storage,transport and dehydration of coal flotation concentrate caused by the strong stability of their foam,the defoaming experiments of silicone defoamer(G)and emulsified hydrocarbon oil defoamer(R)for flotation concentrate were studied to revel the effect of the adding method and dosage of defoamer on the defoaming results.In addition,the effect of residual defoamer in circulating water on flotation process was revealed by the flotation test.The results showed that the rate and degree of defoaming can be increased more effectively by defoamers added in the way of spraying.The defoaming property is better with the increase of the dosage of defoamers and the silicone defoamer is superior to emulsified hydrocarbon oil defoamer.A low amount of defoamer in circulating water has little effect on flotation.When the residual amount increasing,silicone oil defoaming agent reduces flotation selectivity and inhibits flotation,while emulsified hydrocarbon oil defoamer can promote it.It is suggested that the flotation concentrate should be defoamed with low dosage emulsified hydrocarbon oil by spraying.
作者
黄兰慧
陈禹蒙
黄伟
吴昌宁
翁力
刘科
HUANG Lanhui;CHEN Yumeng;HUANG Wei;WU Changning;WENG Li;LIU Ke(Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China;Clean Energy Institute, Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China;Shenzhen Engineering Research Center for Coal Comprehensive Utilization, School of Innovation and Entrepreneurship, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China)
出处
《矿产保护与利用》
2022年第1期106-111,共6页
Conservation and Utilization of Mineral Resources
基金
广东省创新创业团队项目(2016ZT06N532)。
关键词
浮选精煤
消泡
消泡剂
喷淋
循环水
浮选
flotation concentrate of coal
defoaming
defoamer
spray
recycled water
flotation
作者简介
黄兰慧(1998-),女,湖南益阳人,硕士研究生在读,主要从事微矿分离方向研究,E-mail:12032835@mail.sustech.edu.cn;通信作者:陈禹蒙(1991-),女,云南昭通人,研究助理教授,博士,主要从事浮选理论与机理研究,E-mail:chenym7@sustech.edu.cn;通信作者:刘科(1964-),男,美籍华人,澳大利亚工程院外籍院士,教授,主要从事化学工程和能源安全方向研究,E-mail:liuk@sustech.edu.cn。
