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为了评价从含金和碲化物的硫化矿石中回收金的浮选柱浮选指标,并比较浮选柱浮选与普通机械搅拌式浮选的指标,进行了中间设备的试验研究。用60升的玻璃浮选柱进行了试验,给矿是从同时进行的常规半工业试验设备的细磨浮选给料中分出的,因此,可以直接比较两种工艺。在试验期间,详细研究了冲洗水速度、充气量、泡沫层厚度、停留时间和流量偏差的影响。矿石的平均食品位(试验的)约为5克/吨,含1％硫。金在黄铁矿中主要以亮碲金矿(Au_2Fe_3)包裹体的形式产出,少量为自然金。浮选时间为60分钟的普通浮选(4段粗选),金回收率约为97％,精矿金品位约为50克/吨。浮选时间为25分钟的一段浮选柱粗选,金回收率达到普通浮选回路的回收率(97％),而其精矿金品位为150克/吨以上。
In order to evaluate the recovery of gold flotation column flotation index from gold ore and telluride sulfide ore, and compare the flotation column flotation and ordinary mechanical agitation flotation index, the intermediate equipment of the pilot study. A 60-liter glass flotation column was used to conduct the test. The ore was separated from the finely ground flotation feed of a conventional semi-industrial pilot plant that was run at the same time. Therefore, two processes could be directly compared. During the test, the effects of rinse water velocity, aeration volume, foam layer thickness, residence time and flow rate deviation were examined in detail. The average ore grade (test) is about 5 g / t with 1% sulfur. Gold is mainly produced in the form of bright-tellurium gold (Au 2 Fe 3) inclusions in pyrite, with a small amount of natural gold. Flotation time of 60 minutes of ordinary flotation (4 crude selection), the gold recovery rate of about 97%, gold concentrate grade of about 50 grams / ton. Flotation time was a flotation column with a flotation time of 25 minutes. The gold recovery rate was 97% for the conventional flotation circuit, while the concentrate grade was above 150 g / t.