摘要
碳酸盐型磷块岩在地下水作用下产生化学风化,部分风化矿石只需简单擦洗脱泥即为高浓度磷肥原料。以风化矿判别标志(CO_2≤5.4％)和矿石擦洗试验选别指标线性回归方程作为划分擦洗风化矿指标。经计算,滇池地区赋存大量擦洗风化矿。
Carbonate-bearing phosphate deposits are subjected to chemical weathering by action of underground water. Some of weath-ered ores, merely treated by simple scrubbing and desliming, can seve as raw material for concentrated phosphate fertilizer production, The index of CO2≤5.4% and linear regression equations from ore scrubbing tests constitute the criteria in defining scrubable waethered ores. By estimate,scrubable weathered ores in the Dianchi Distriet occur in large quantities.
关键词
磷块岩
风化矿
选矿
指标
品位
Phosphorite, Deposit produced by weathering, Evaluation
