低品位固体钾矿驱动溶解开采扩大试验研究  

Research into in-situ expanding experimental dissolving-dirving of low grade solid potassium resources

作　　者：王晓[1] 琚振闯 张聪[1] 

机构地区：[1]青海大学化工学院,青海西宁810016

出　　处：《中国矿业》2015年第7期100-103,共4页China Mining Magazine

基　　金：国家科技支撑计划"大型矿产基地生态恢复技术与示范"子课题"洪水补充卤水钾盐浓度控制技术研发与利用洪水补充盐湖卤水技术集成与示范"资助(编号:2012BAC09B05-4)

摘　　要：在研究盐湖矿床溶解开采低品位钾矿时,采用配方溶剂和双井管补采技术,选择马海盐湖进行了溶解驱动扩大工程试验。用surfer软件分析水动力场和化学场。结果显示随着补卤的进行水动力场变化趋势与环境变差一致,采卤管K+浓度由1.41%上升达到2.3%,有效溶出矿体的K+。Na+的浓度变化是由补卤配方试剂加入3.5%左右的Na+引起,而矿体所含的Na+未参加溶解过程,保证了矿体骨架完整,不出现坍塌现象,这种溶解驱动开采工艺技术可行。Using solvent formulations and double well tubes filling mining methods on the dissolving low-grade solid potash mining,dissolving-dirving expanding experimental in the Mahai salt lake deposit was carried out.Through surfer software,hydrodynamic field and hydrogeochemical fields was analyzed.Results indicated that with the changes trends of the hydrodynamic fields by adding brine processing consistent with environmental variation,mining brine pipe K^＋concentration increased from 1.41% to 2.3%,K^＋in ore bodies can be dissolved effectively.Changes in the Na＋concentration is caused only by adding 3.5% of Na^＋to halide formula reagent,and the Na^＋in ore bodies did not participate in dissolving process,which ensures that the ore body skeleton is complete and do not appear to collapse.As a result,this dissolving-dirving technology is feasible.

关 键 词：低品位固体钾盐 补卤工艺 现场扩大试验 水动力场和化学场 

分 类 号：TD871.1[矿业工程—非金属矿开采]