2011•Journal of Central South University(Science and Technology)Requires access
Upgrading iron and removing phosphorus from high-phosphorus iron ore
Xuemei Wei
Open publisher page 4 citations
Abstract
The reduction roasting-magnetic separation-sulfuric acid leaching of high-phosphorus iron ores was studied.The process parameters of acid leaching were optimized with rougher iron ore concentrate obtained by reduction roasting-magnetic separation of ROM(run of mine) ores.The effects of various factors on upgrading iron and dephosphorization were discussed in acid leaching.The result shows that the iron ore concentrate,assaying 62.35% iron and 0.20% phosphorus content are achieved at the overall iron recovery of 90.54% and dephosphorization of 87.42% under the conditions of leaching for 2 h,at 2.5 liquid-to-solid mass ratio,50 kg/t sulfuric acid and 500 r/min agitating speed after the ROM ore with 47.28% iron and 1.59% phosphorus content is pretreated by reduction roasting-magnetic separation.