日处理100t/d-1000t/d岩金矿选矿工艺设备（岩金矿浮选—精矿氰化工艺）
Rock  gold mine mineral processing equipment (Gold  mine-flotation-cyanidation)

一、工艺特点
 I. Process Feature

硫化原生矿，含泥量少浮选易富集，回收率较高的矿石，常采用浮选-精矿氰化工艺。特点是：浮选富集后，精选含金品位提高，进入氰化作业的矿量少，氰化物耗量低，对环境污染小，可节约基建投资，降低生产成本、实现就地产金的目的。

The  floatation-ore concentrate cyanidation process is usually used for vulcanized  primary ore and the ores with low silt content and high recovery rate that are  easy to concentrate during floatation. . Feature: after the floatation and concentration,  the gold grade is improved, less material gets into cyanidation procedure. The  consumption of cyanide is reduced, and as a result, the environmental pollution  is minimized. In this way, construction investment and production cost is  reduced and the goal of on-site gold concentration is achieved.

浮选—精矿氰化工艺适用于处理含金石英脉型硫化矿石、含金蚀度岩型矿石,对含金多的金属硫化矿石浮选精矿，经焙烧后才能用氰化工艺。

Floatation-ore  concentrate cyanidation process is applicable for processing auriferous quartz  type sulfide ore. Hence, the metal sulfide ore flotation concentrate with  higher gold content cannot use cyanidation process before calcinations.

以上矿石的浮选—氰化的总回收率95%左右。并可采用酸化法处理尾矿污水回收氰化物，贫液中约70%的氰化物可以被回收利用。酸化法原理：贫液中含有浓度较高的氰化物（2100-2300mg/L）,在酸性条件下可挥发出氢氰酸（HCN）剧毒气体，在碱液（NOH）中可以被吸收，生成氰化钠（NaCN）。酸化法回收氰化物对企业经济效益及环境效益十分显著。

The  total recovery for the above ores that pass through the floatation-cyanidation  process is about 95%. Additionally, acidization can be used to process the  cyanide collected from tailings sewage. In this way, about 70% of cyanide in  barren solution can be recycled. . Acidization principle: under acidic condition,  the high-concentration cyanide (2100-2300 mg/L) in barren solution can release  highly toxic HCN gas that can be absorbed in NOH to produce NaCN. . Acidization  recycling cyanide presents significant business economic benefit and  environment benefit.

二、工艺流程
 II. Technological Process

原矿→颚式破碎机→圆锥破碎机→筛分设备→螺旋分级机→节能格子型球磨机→粗选浮选机→扫选浮选机→精选浮选机→浮选精矿再磨球磨机→（一洗）单层浓密机→（一浸）浸出槽→（二浸）浸出槽→（二洗）三层浓密机→脱氧塔→过滤器→锌粉给料机→置换压滤机→氰化金泥→贫液酸化法处理。

Raw  ore → jaw crusher → rotary cone crusher → sieving machine → spiral classifier → energy saving grate mill → rough separation machine → scavenging machine → concentration machine → flotation concentrate ball mill → (wash I) single-tray thickener → (leaching I) leach tank → (leaching II) leach tank → (wash II) three-tray thickener → deoxygenation tower → filter → zinc powder feeding machine → substitution press filter → cyanidation gold slime → processing by barren solution acidization method.

三、精矿氰化作业主要技术指标及工艺条件
 III. Key Technical Parameters and Technological  Conditions of Ore  Concentrate Cyanidation

磨矿粒度：400目占98%；浸出时间36小时；氰化物消耗：3.5kg/t精矿，浸出物浓度：0.15-0.2%；洗水比：1：4；浸出率：97%；洗涤率：99.5%；置换率：99.5%；氰化总回率：95.5%。

Grinding  particle size: 400 meshes accounting for 98%; leaching time 36 hours; cyanide consumption:  3.5 kg/t of ore  concentrate; extract concentration: 0.15-0.2%; washing water ratio: 1:4;  leaching rate: 97%; wash rate: 99.5%; displacement ratio: 99.5%; total recovery  rate of cyanidation: 95.5%.

四、日处理100t/d-1000t/d岩金矿主要设备配套
 IV. Supporting Equipment for the Major Equipment  for Rock Gold Mine with A Daily Processing Capacity of 100t/d-1000t/d