Welcome to Metal Mine! Today is Share:

Modern Mining ›› 2020, Vol. 36 ›› Issue (4): 121-124.

Previous Articles     Next Articles

Study on Reverse and Direct Flotation Removed Magnesium and Degrade Silicon for Medium and Low Grade Collophanite in Yunnan

Huang Chenlei1,Yang Xiao1,Wang Wenyuan1,Cai Zhongjun1,Liu Xing1,Luo Huihua1,Zhou Jun2   

  1. 1.Xingfa School of Mining Engineering,Wuhan Institute of Technology;2.Yunnan Phosphate Chemical Group Co.,Ltd.
  • Online:2020-04-25 Published:2020-05-20

Abstract: In order to determine the beneficiation process of a low-grade collophanite ore in Yunnan,according to the technological mineralogical characteristics of the phosphate ore and the principle of preferential flotation of easily-selected minerals and less flotation and more suppression,the beneficiation test was carried out by adopting reverse combined direct flotation process.The results show that when the raw ore with P2O5 grade of 25.93%,with grinding fineness of -0.074 mm 80.0%,treated by the process of one roughing one scavenging reverse flotation-concentrate of reverse flotation dehydration-one roughing one cleaning one scavenging direct flotation and medium returned back process.The concentrate with P2O5 grade of 31.30% and recovery of 84.75% is obtained,The MER value of the concentrate is 10.06%,which is 9.04 percentage points lower than the original ore,and the SiO2 content is 15.23%,which is 7.34 percentage points lower than the original ore.The reverse combined direct flotation process is an efficient and simple process to separate low-grade collophanite.

Key words: Medium and low grade collophanite, Reverse flotation, , Direct flotation, Remove magnesium and degrading silicon 