銅冶煉急冷渣、緩冷渣銅可選性試驗研究
發(fā)布時間：2019-04-19 03:52
【摘要】：通過對不同冷卻方式的銅冶煉渣進(jìn)行了可選性試驗研究,結(jié)果表明,急冷渣由于冷卻速度過快,還未形成相對集中的獨立相結(jié)晶體就與鐵及硅形成超細(xì)粒級的混合礦物,使銅礦物的可浮性下降,盡管磨得很細(xì)仍得不到有效的回收。緩冷渣則在緩慢的冷卻過程中,爐渣熔體的初析微晶可通過溶解、沉淀形式成長,形成結(jié)晶良好的自形晶或半自形晶,析出的銅礦物粒子借助擴(kuò)散和凝結(jié)作用就會增大,可浮性較好,且易于單體解離,有助于銅礦物的浮選回收。某小型銅冶煉一廠緩冷渣試驗取得的指標(biāo)為銅精礦品位55.10%,回收率97.27%;某大型銅冶煉廠緩冷渣試驗取得的指標(biāo)為銅精礦品位44.68%,回收率92.95%。試驗結(jié)果表明,緩冷渣均取得較優(yōu)的選別指標(biāo)。
[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.
【作者單位】： 玉溪礦業(yè)有限公司;玉溪晨興礦冶科技開發(fā)有限公司;
【分類號】：TD952
本文編號：2460575
[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.
【作者單位】： 玉溪礦業(yè)有限公司;玉溪晨興礦冶科技開發(fā)有限公司;
【分類號】：TD952
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