岩盐伴生性钙芒硝的转化开采技术
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摘要
硫酸钠型岩盐中一般都有伴生性的钙芒硝矿,而钙芒硝难溶于水。目前,常用的水溶法开采不能将难溶的伴生性钙芒硝采出,从而造成了资源的浪费。利用制碱钙液中氯化钙促进钙芒硝溶漓分解的原理,提出了一种用制碱钙液转化开采岩盐伴生性钙芒硝资源的方法,使盐矿中伴生的钙芒硝得到溶漓分解,转化成有用的NaCl并采出,实现了钙芒硝资源开发利用,提高了岩盐矿藏的资源利用率。
Sodium sulphate type rock salt is usually accompanied by glauberite.Glauberite is insoluble in water.At present,the commonly used solution mining method can not extract the insoluble associated glauberite,resulting in the waste of resources.A method of exploiting glauberite resources associated with rock salt is presented in this paper.Calcium chloride in the waste liquid from Solvay Process can promote the dissolution and decomposition of glauberite,so that the associated glauberite in salt mine can be dissolved and decomposed,and then converted into useful sodium chloride for extraction.The method has achieved the purpose of improving the utilization ratio of mineral resources.
Sodium sulphate type rock salt is usually accompanied by glauberite.Glauberite is insoluble in water.At present,the commonly used solution mining method can not extract the insoluble associated glauberite,resulting in the waste of resources.A method of exploiting glauberite resources associated with rock salt is presented in this paper.Calcium chloride in the waste liquid from Solvay Process can promote the dissolution and decomposition of glauberite,so that the associated glauberite in salt mine can be dissolved and decomposed,and then converted into useful sodium chloride for extraction.The method has achieved the purpose of improving the utilization ratio of mineral resources.
引文
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[2]罗守杰.安宁盆地钙芒硝矿开采方法的探讨[J].中国井矿盐,2001, 32(6):27~30.
[3]王清明.盐类矿床水溶开采[M].北京:化学工业出版社,2003.
[4]汤艳春,周辉,冯夏庭,谢越韬.应力作用下岩盐的溶蚀模型研究[J].岩土力学.2008,29(2):296~302.
[5]钱海涛,谭朝爽,李守定,王思敬.应力对岩盐溶蚀机制的影响分析[J].岩石力学与工程学报.2010.29(4):757~764.
[6]徐军,梁卫国,张继龙等.不同离子浓度钙液环境中钙芒硝溶解试验研[J].地下空间与工程学报,2013, 9(3):502~509.
[7]刘中华.钙芒硝矿床原位水溶开采的溶解—渗透耦合数学模型及数值模拟[D].太原理工大学硕士学位论文.2007.5.
[8]刘正和,徐素国.难溶性盐钙芒硝在碱液中溶解特性的实验研究[J].科技情报开发与经济,2006, 16(22):171~172.