首页>
外国专利>
METHOD OF RECOVERING GOLD VIA HEAP AND PERCOLATION LEACHING FROM SLIME AND ARGILLACEOUS ORES
METHOD OF RECOVERING GOLD VIA HEAP AND PERCOLATION LEACHING FROM SLIME AND ARGILLACEOUS ORES
展开▼
机译:通过滑石和砂矿中的堆积和渗透浸出回收金的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
FIELD: gold mining. SUBSTANCE: claimed method is suitable to be applied when recovering gold from ores, concentrated products and old slimes from concentration plants, which contain large amounts of fine material leading to difficulties both in formation of heap and in the leaching solution filtration process. Method comprises crushing ore, preparing batch, binder-assisted agglomeration, adding surfactant and medium pH-controlling substance, forming heap, sprinkling heap by leaching solution, and recovering gold from solution. Surfactant utilized is humic acid taken in amount ranging from 0.05 and 8.1 kg/t and, as medium pH- controlling substance, alkalis (in particular sodium hydroxide) forming soluble salts with humin acids are used, humic acid being added during preparation of batch or directly when agglomerating ore. Above-mentioned binder is cement taken in amounts corresponding to weight ratio with humic acid from 8:0.01 to 5:1 depending of type of ore. EFFECT: increased by 2-3 times recovery of gold and achieved 5-6-fold reduction in leaching duration. 4 cl, 4 dwg, 2 tbl
展开▼
机译:领域:金矿开采。物质:要求保护的方法适用于从矿石,浓缩产品和浓缩厂中的老煤泥中回收黄金,这些矿石中含有大量的细料,导致堆肥和浸出液过滤过程中都困难。该方法包括粉碎矿石,制备批料,粘合剂辅助的团聚,添加表面活性剂和中等pH控制物质,形成堆,通过浸出溶液撒堆以及从溶液中回收金。所使用的表面活性剂是腐殖酸,其用量范围为0.05至8.1 kg / t,并且作为中等pH调节物质,使用了与腐殖酸形成可溶性盐的碱(特别是氢氧化钠),在分批制备或直接结块矿石时。上述粘结剂是水泥,其用量取决于与矿石的类型相对应的与腐殖酸的重量比为8:0.01至5:1。效果:金的回收率提高了2-3倍,浸出时间减少了5-6倍。 4厘升,4公升,2公吨
展开▼