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黄麦岭磷矿选厂浓密机跑浑,溢流浓度达2.78％,品位26.52％,每年损失近20万元。为了改善浓密效果,并满足二期工程制磷铵的需要,要求底流浓度稳定到65％。为此进行了精矿絮凝脱水的研究。 一、试验样品、药剂及方法 试样取自选厂进入浓密机的磷精矿和浓密机溢流。使用的药剂有明矾和不同类型的聚丙烯酰胺。方法是在1000毫升量筒中作沉降试验。黄麦岭磷精矿沉降1小时后,实测上层情液浓度3.75％,沉砂品位P_2O_535.42％。
Huangmeiling phosphate mining plant thickener ran muddy, overflow concentration of 2.78%, grade 26.52%, annual loss of nearly 200000 yuan. In order to improve the dense effect and meet the needs of the second phase of ammonium phosphate production, the underflow concentration is required to stabilize to 65%. For this reason, the study of flocculation and dewatering of concentrate was carried out. First, the test samples, reagents and methods Specimens from the selected plant into the thickener concentrate and thickener overflow. The agents used are alum and different types of polyacrylamide. The method is in a 1000 ml graduated cylinder for sedimentation test. Huangmai Ling phosphate concentrate settlement after 1 hour, the measured concentration of the upper liquid 3.75%, sand grade P_2O_535.42%.