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(三)从火法处理含Sc钨矿所获得的尾渣中提Sc 世界上钨矿的大部份都是用火法处理来生产钨铁。一般情况下,Sc是从钨铁生产的渣中顺便提取。渣中Sc的含量比黑钨矿中提高了三倍,达0.04％。将此渣磨细到80％通过200目,用盐酸、硫酸或硝酸分解(盐酸效果最好),方法是将渣倒于热酸中,为了改善下一步过滤,加入2％的水胶液。最佳的浸出条件是:用18％的盐酸,80～90℃,渣粒度是80％-200
(C) From the tailings obtained from the fire treatment of Sc-containing tungsten ore, most of the world’s tungsten mines are treated by fire to produce ferro-tungsten. In general, Sc is by the way extracted from the slag produced by ferrotungsten. The content of Sc in slag is three times higher than that of wolframite at 0.04%. This slag mill to 80% through 200 mesh, with hydrochloric acid, sulfuric acid or nitric acid decomposition (hydrochloric acid best), the method is to pour the residue in the hot acid, in order to improve the next filter, add 2% water glue. The best leaching conditions are: with 18% hydrochloric acid, 80 ~ 90 ℃, the slag particle size is 80% -200