Study on Beneficiation and Dephosphorization of Refractory Oolitic Hematite Ore
Beneficiation and dephosphorization of refractory oolitic hematite ore are investigated in this paper. It is shown that single magnetic separation, gravity separation or flotation is unable to recover iron effectively from the ore due to the complex mineralogy. The joint separation by spiral chute-shaking table shows a prospect for the treatment of the ore. An iron concentrate with 58.67% iron grade and 51.93% recovery is obtained by the joint separation of spiral chute and shaking table under the fineness of -0.074mm 90% and dispersant dosage of 2kg/t for a sample ore of 37.51% Fe and 0.88% P. However, P content in the concentrate is still up to 0.52%. Dephosphorization from the concentrate is hence carded out. The final iron concentrate assaying 59.26% Fe and 0.056% P is obtained when the concentrate obtained by joint separation is leached by sulfuric acid of 1% (mass fraction) with solid percentage 10% at room temperature for 10min.
Oolitic hematite ore Spiral chute separation Shaking table separation Sulfuric acid leaching Dephosphorization
T. Jiang H. G. Dong Y. F. Guo G. H. Li Y. B. Yang Y. B. Zhang Q. Li
School of Minerals Processing and Bioengineering, Central South University, Changsha, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1755-1760
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）