湿法磷酸发黑的成因探究

Study on cause of blackening of wet-process phosphoric acid

为探究公司生产的磷酸发黑的成因,先后进行了单一磷矿浮选、单一磷精矿酸解等试验研究,结果表明:原料某地A矿和B矿酸解产生的大量黑色物质是生产中导致产品磷酸发黑的原因。

Tests were conducted of single phosphate flotation and single phosphate concentrate acidolysis to explore the cause of blackening of the wet-process phosphoric acid produced by the company. The results showed that acidulation of those ores from place A and B could release the massive black material, causing blackening of phosphoric acid.