铜冶炼急冷渣、缓冷渣铜可选性试验研究

发布时间：2019-04-19 03:52

【摘要】：通过对不同冷却方式的铜冶炼渣进行了可选性试验研究,结果表明,急冷渣由于冷却速度过快,还未形成相对集中的独立相结晶体就与铁及硅形成超细粒级的混合矿物,使铜矿物的可浮性下降,尽管磨得很细仍得不到有效的回收。缓冷渣则在缓慢的冷却过程中,炉渣熔体的初析微晶可通过溶解、沉淀形式成长,形成结晶良好的自形晶或半自形晶,析出的铜矿物粒子借助扩散和凝结作用就会增大,可浮性较好,且易于单体解离,有助于铜矿物的浮选回收。某小型铜冶炼一厂缓冷渣试验取得的指标为铜精矿品位55.10%,回收率97.27%;某大型铜冶炼厂缓冷渣试验取得的指标为铜精矿品位44.68%,回收率92.95%。试验结果表明,缓冷渣均取得较优的选别指标。
[Abstract]:The selectability test of copper smelting slag with different cooling methods was carried out. The results showed that the quench slag had not formed relatively concentrated independent phase crystal and formed superfine mixed minerals with iron and silicon because of the rapid cooling rate, and the results showed that the cooling rate of the slag was too fast to form an ultra-fine mixed mineral with iron and silicon before the formation of a relatively concentrated independent phase-forming crystal. Reduces the floatability of copper minerals, although ground very finely, is still not effectively recovered. In the slow cooling process, the primary precipitated microcrystals of slag melts can grow through dissolution and precipitation to form well-crystallized self-shaped or semi-self-shaped crystals, and the precipitated copper mineral particles will increase by means of diffusion and condensation. The floatability is good, and it is easy to separate the monomer, which is helpful to the flotation recovery of copper minerals. The grade of copper concentrate was 55.10% and the recovery rate was 97.27% in a small copper smelter, and the grade of copper concentrate was 44.68% and the recovery rate was 92.95% in a large copper smelter. The test results show that the slow cooling slag can obtain better separation index.
【作者单位】：玉溪矿业有限公司;玉溪晨兴矿冶科技开发有限公司;
【分类号】：TD952

【相似文献】