钙芒硝矿溶浸开采技术进展与展望

Progress and Prospects for Solution Mining of Glauberite

简要回顾了钙芒硝矿开采的技术历程,重点介绍了现今应用最为广泛的就地破碎溶浸方法,分析了其优缺点,叙述了群井致裂压力溶浸开采方法的试验情况。详细论述了钙芒硝矿溶浸开采的研究情况,总结了现有研究的不足。综合分析得出:现有水溶工艺缺陷明显,导致溶浸周期长、资源回收率低,同时资源不能综合利用。认为应寻求一种溶浸效率高、可资源综合利用的化学溶浸液,加强溶浸理论研究,探明多因素对溶浸效果的影响,开发出经济合理的化学改性浸出方法。

A brief review of the technology progress about glauberite exploitation was addressed, in which the advanta- ges and disadvantages of in-situ fragmentation leaching, the most widely used method today, were introduced as a key point. Then related practice of multi-well cracking pressurecontrol leaching mining was described. Furthermore, the state of glauberite mining research was discussed in detail, with the deficiencies of existing research being summarized. Comprehensive analysis concluded that obvious defects in present technology could result in long leaching cycle, low recovery rate and incapable of resources comprehensive utilization. Thus, it was necessary to develop a chemical leaching solution possessing with high leaching efficiency and capability of resources comprehensive utilization. To explore an economic and reasonable chemical modification leaching method, many studies were required on leaching theory and influential factors of leaching efficacy.