日處理100t/d-1000t/d巖金礦選礦工藝設(shè)備（巖金礦浮選—精礦氰化工藝）
Rock  gold mine mineral processing equipment (Gold  mine-flotation-cyanidation)

一、工藝特點(diǎn)
 I. Process Feature

硫化原生礦，含泥量少浮選易富集，回收率較高的礦石，常采用浮選-精礦氰化工藝。特點(diǎn)是：浮選富集后，精選含金品位提高，進(jìn)入氰化作業(yè)的礦量少，氰化物耗量低，對環(huán)境污染小，可節(jié)約基建投資，降低生產(chǎn)成本、實(shí)現(xiàn)就地產(chǎn)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.

浮選—精礦氰化工藝適用于處理含金石英脈型硫化礦石、含金蝕度巖型礦石,對含金多的金屬硫化礦石浮選精礦，經(jīng)焙燒后才能用氰化工藝。

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.

以上礦石的浮選—氰化的總回收率95%左右。并可采用酸化法處理尾礦污水回收氰化物，貧液中約70%的氰化物可以被回收利用。酸化法原理：貧液中含有濃度較高的氰化物（2100-2300mg/L）,在酸性條件下可揮發(fā)出氫氰酸（HCN）劇毒氣體，在堿液（NOH）中可以被吸收，生成氰化鈉（NaCN）。酸化法回收氰化物對企業(yè)經(jīng)濟(jì)效益及環(huán)境效益十分顯著。

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、工藝流程
 II. Technological Process

原礦→顎式破碎機(jī)→圓錐破碎機(jī)→篩分設(shè)備→螺旋分級機(jī)→節(jié)能格子型球磨機(jī)→粗選浮選機(jī)→掃選浮選機(jī)→精選浮選機(jī)→浮選精礦再磨球磨機(jī)→（一洗）單層濃密機(jī)→（一浸）浸出槽→（二浸）浸出槽→（二洗）三層濃密機(jī)→脫氧塔→過濾器→鋅粉給料機(jī)→置換壓濾機(jī)→氰化金泥→貧液酸化法處理。

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、精礦氰化作業(yè)主要技術(shù)指標(biāo)及工藝條件
 III. Key Technical Parameters and Technological  Conditions of Ore  Concentrate Cyanidation

磨礦粒度：400目占98%；浸出時(shí)間36小時(shí)；氰化物消耗：3.5kg/t精礦，浸出物濃度：0.15-0.2%；洗水比：1：4；浸出率：97%；洗滌率：99.5%；置換率：99.5%；氰化總回率：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、日處理100t/d-1000t/d巖金礦主要設(shè)備配套
 IV. Supporting Equipment for the Major Equipment  for Rock Gold Mine with A Daily Processing Capacity of 100t/d-1000t/d