使用两步调整浮选分离白云石和磷灰石,方法是很简单的。第一步先将矿浆pH调至10,加捕收剂,第二步再将矿浆调至pH 3左右,在此酸性介质中浮出白云石,槽内产物即为磷精矿。用两步调整法浮选印度贾马可特拉磷矿石,当原矿P_2O_5含量18.4％MgO含量10.3％时,可得精矿P_2O_5含量37.7％,MgO0.7％,磷回收率82％;而用一步调整反浮选(PH2.7),各磷精矿品位P_2O_536.2％,MgO含量1.3％,磷回收率为86％。若使用一种称之为“A”的抑制剂,两步法可获P_2O_5>5％,MgO<1％的精矿,回收率85％。 The use of two-step flotation separation of dolomite and apatite, the method is very simple. The first step is to first adjust the pH of the pulp to 10, add the collector, and then the pulp is adjusted to about pH 3 in the second step. Dolomite appears in the acidic medium, and the product in the tank is the phosphate concentrate. When the P2O5 content of 18.4% MgO is 10.3%, the content of P2O5 in the ore concentrate is 37.7%, MgO 0.7%, and the recovery rate of phosphorus is 82% by using two-step adjustment method. With a one-step adjustment of anti-flotation (PH2.7), the phosphorus concentrate grade P_2O_536.2%, MgO content of 1.3%, phosphorus recovery was 86%. If you use a known as “A” inhibitor, two-step method will be P_2O_5> 5%, MgO <1% of the concentrate, the recovery rate of 85%.