福建某低品位金矿新型浸金剂浸金试验

Gold leaching test of new gold ligands for a low-grade gold mine of Fujian

福建某斑岩型金矿品位低、规模大,金主要以自然金形式存在,可见金的粒度较大。为高效利用该低品位金矿,开展新型浸金剂金蝉全泥浸出试验和柱浸试验。结果表明,全泥浸出在磨矿细度-0.074mm含量占80%、矿浆浓度25%、加石灰调pH值11.0左右、初始金蝉浓度500mg/L和过程中控制金蝉浓度不小于300 mg/L条件下浸出20h,金的浸出率为93.43%,金蝉消耗量为1.02kg/t;柱浸在矿石粒度为-30mm条件下喷淋浸出23d,金累计浸出率和金蝉累计消耗量分别为86.54%和1.22kg/t。

A porphyry gold deposit in Fujian is characterized by low grade and large scale.The gold mainly exists in the form of natural gold,and the grain size of visible gold is relatively large.For the efficient utilization of the low grade gold mine,all-slime leaching and column leaching experiment using Jinchan as a new type of gold leaching agent were carried out.The results show that the leaching rate of gold was 93.43%and Jinchan consumption was 1.02 kg/t under the all-slime leaching conditions of grinding fineness of-0.074 mm accounting for 80%,pulp density of 25%,pH value of 11.0 adjusted with lime,initial golden cicada concentration of 500 mg/L and control of no less than 300 mg/L in the process,and leaching time of 20 h.The cumulative gold leaching rate and the cumulative gold cicada consumption were 86.54%and 1.22 kg/t,respectively,under the column leaching condition of ore particle size of-30 mm for 23 days.