溶浸开采杂卤石的机理及可行性研究

我国杂卤石矿资源丰富，由于其难溶性和深埋藏的特点，至今尚未开发利用。就杂卤石矿的地质特征而言，具有溶浸开采的基本地质条件。溶浸开采杂卤石的技术关键在于其中有效成分的溶出。溶浸开采可能成为深埋藏杂卤石的开发的有效途径。溶浸剂种类、浓度，矿层组成、厚度，矿石有效孔隙度和粒度，溶浸剂流速等是影响溶解开采深埋藏杂卤石的技术因素。开发难溶性杂卤石矿对缓解我国钾肥紧张局面具有重大意义。

Mechanism and Feasibility Study of Solution Mining of Polyhalite

China is rich in polyhalite. However, So far the polyhalite has not been exploited and utilized due to its poor dissolubility and deep occurrance. By analysing its geological characteristics, it is concluded that the polyhalite has indispensible geological conditions suitable for solution mining. The key to solution mining of the polyhalite lies in dissolution of its valuables. It is possible for solution mining to become a effective way for exploiting deeply-lying polyhalite. The technical factors affecting solution mining of the deeply-lying polyhalite include types of solving agents, solution concentration, compositions and thickness, porosity and size of ore and flowrate of solving agents. The exploiting of polyhilite is of great importance to the relaxation of short supply of potash fertilizer.