深层富钾卤水类型、勘查技术方法及工业指标建议

Types,Exploration Techniques and Suggested Industrial Indexes of Deep-Seated Potassium-Rich Brine

为修订完善现行《盐湖和盐类矿产地质勘查规范》(DZ/T0212-2002)有关深层卤水的勘查类型、勘查技术要求及工业指标等内容,作者系统收集了近年来富钾深层卤水的勘查成果及研究资料,并进行归纳总结。根据卤水的赋存条件,对深层卤水类型进行了分类,划分为孔隙型、孔隙-裂隙型和溶蚀孔洞-裂隙型三种勘查类型;针对不同卤水矿类型及已有工作程度提出了“油钾兼探”及开展专项勘查评价两种工作方法;总结了近年来对深层富钾卤水工业指标论证成果,确定深层富钾卤水矿一般工业指标:边界品位为KCl≥0.3%~0.5%,最低工业品位为KCl≥0.5%~1.0%。该成果已应用到规范修订中。

In order to revise and improve the current“Specifications of Salt-Lake” and Salt Mineral Exploration(DZ/T0212-20020)focusing on exploration types,technical requirements and industrial indexes of deep brine,this work systematically collects and summarizes the relevant exploration results and research data in recent years.Based on the occurrence conditions of brine,the deep brine is classified into three types:pore type,pore-crack type and solution cavity-crack type.According to different types of brine and existing work,two methods of oil and potassium exploration and special exploration and evaluation are put forward.Summarizing the demonstration results in recent years,this work determines the general industrial indexes of deep-seated potassium-rich brine as follows:the boundary grade is KCl≥0.3%~0.5%,and the lowest industrial grade is KCl≥0.5%~1.0%.These results have been adopted in the revision of the specifications.