某低品位微细粒氧化型金矿石的堆浸技术研究  

Technical Study on Gold Extraction by Heap Leaching for Low-grade Microfine Grained Gold Oxide Ore

作　　者：赵娜 臧文优 王杰 杨鹏 孙美芬 ZHAO Na;ZANG Wenyou;WANG Jie;YANG Peng;SUN Meifen(Shandong Zhaojin Technology Co.,Ltd.)

机构地区：[1]山东招金科技有限公司,山东省招远市265400

出　　处：《现代矿业》2021年第4期116-118,共3页Modern Mining

摘　　要：为了确定某低品位微细粒氧化型金矿石的堆浸工艺参数,进行了入堆粒度、制粒条件、喷淋强度、氰化钠浓度及堆浸时间试验。结果表明,矿石采用制粒堆浸的工艺回收金是可行的,在入堆粒度为-50 mm,制粒水泥用量为0.5%、石灰用量为1%,矿石与循环液的质量比为1∶1,喷淋强度为30 L/(m^(2)h),氰化钠浓度为0.1%,堆浸时间为30 d情况下,金浸出率为50.83%。In order to determine the heap leaching process parameters of a low-grade fine-grained ox⁃idized gold ore,tests on the heap particle size,granulation conditions,spray strength,sodium cyanide con⁃centration and heap leaching time was carried out.The results showed that it is feasible to recover gold from ore by granulating heap leaching process.With a 50 mm heap particle size,0.5%cement dosage for granu⁃lation,limestone dosage 1%,1∶1 mass ratio of ore to circulating liquid,30 L/(m^(2)h)spray strength,0.1%so⁃dium cyanide concentration and 30 d heap leaching time,a gold leaching rate of 50.83%was obtained.

关 键 词：低品位微细粒金矿石 制粒堆浸 浸出率 

分 类 号：TF831[冶金工程—有色金属冶金]