摘要
针对石煤焙砂浸出提钒工艺中耗水量大的缺点,采用2段水浸、1段酸浸浸出工艺,进行了循环使用浸出水溶液的试验研究。试验结果表明:在浸出水溶液不循环使用的情况下,浸出过程的单位耗水量为7.45m3/t。而按一定方法将浸出水溶液循环使用,其循环利用率可高达83.8%,浸出过程的单位耗水量仅为1.25m3/t;相应地,尾水产生量也从7.45m3/t减少到1.25m3/t,从而可大大减轻尾水处理的压力。此外,循环使用浸出水溶液还可使浸出液中的钒得到富集,减轻后续浸出液处理工艺的压力,并可回收水浸液树脂吸附尾液中的剩余钒,减少钒的流失。
In light of the large water consumption in the stone coal calcine leaching for vanadium extraction, research test on the recycling of aqueous solution was made in a process consisting of two stage water leaching and one stage acid leaching. The test results show that when the aqueous solution is not recycled, the unit water consumption of leaching is 7.45 m^3/t while when it is recycled in certain way, the water recycle rate can be as high as 83.8% ,which can reduce the unit water consumption to only 1.25 m^3/t and the tall water production from 7.45 m^3/t to 1.25 m^3/t accordingly, thus greatly reducing the pressure of tail water treatment. Moreover, the recycling of aqueous solution can enrich the vanadium in the leaching solution, reducing the pressure of the downstream processing of leaching solution and the vanadium loss by resin adsorption of the residual vanadium in the tail solution.
出处
《金属矿山》
CAS
北大核心
2009年第6期77-79,83,共4页
Metal Mine
关键词
石煤焙砂
浸出提钒
浸出水溶液
循环利用
Stone coal calcine, Leaching for vanadium extraction, Aquesou solution of leaching, Recycling
