离子型稀土浸矿过程渗透率与黏聚力的关系研究  

Research on the Relation of Permeability and Cohesion in the Leaching Process of Ion-type Rare Earth Ore

作　　者：李永欣[1] 王晓军[1,2] 黄广黎 周凌波 廖声银 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州市341000 [2]江西省矿业工程重点实验室,江西赣州市341000

出　　处：《矿业研究与开发》2018年第1期24-27,共4页Mining Research and Development

基　　金：国家自然科学基金项目(51364011;51564012);江西省研究生创新专项资金项目(YC2015-S294);江西省教育厅科学技术研究项目(GJJ150653);青年科学基金项目(51504102)

摘　　要：通过三轴试验仪和简易渗透试验仪对重塑稀土矿样进行强度和渗透率的测试试验,研究了2%(NH_4)_2SO_4溶液和5%(NH_4)_2SO_4溶液浸矿试样的黏聚力变化规律,2种溶液浸矿后试样的黏聚力随浸矿时间逐渐减小,尤其是2%(NH_4)_2SO_4溶液浸矿后试样的黏聚力下降速率更快。从2种不同浓度的(NH4)2SO4溶液浸矿试样的渗透率变化可以看出,矿样的渗透率随浸矿时间逐渐增大,较高浓度溶液浸矿后的试样渗透率增加的幅度更大。通过分析浸矿后试样的黏聚力和渗透率的关系得出,随着浸矿试样的渗透率增大,其黏聚力出现下降的趋势。The tests on the strength and permeability of remodeling rare earth ore were carried out by triaxial instrument and simple permeameter. The change rules of cohesion were studied for the samples leached by 2% of （NH4）2 SO4 solution and 5 of（NH4）2SO4solution respectively. The cohesions of two samples after leaching gradually decreased along with the leaching time, especially the cohesion of the sample leached by 2% of （NH4）2SO4 solution fell more rapidly. From the permeability change of samples leached by （NH4）2 SO4 solution with two kinds of concentrations, it was found that the permeability of ore samples gradually increased along with the leaching time, while the permeability of ore samples leached by high-concentration solution had a greater increase degree. Through the analysis on the relation of cohesion and permeability of samples after leac- hing, it was obtained that with the increase of permeability of leaching samples, the cohesion showed a downward trend.

关 键 词：稀土矿样 强度测试 黏聚力 渗透率 浸矿时间 

分 类 号：TD865[矿业工程—金属矿开采]