Magnetization of Weakly Magnetic Mineral by Iron Ions in Slurry
Magnetization in slurry (MIS) of weakly magnetic minerals by iron ions was investigated. The magnetic seeds (strongly magnetic particles) were synthesized by ferruginous chlorides directly in slurry instead of previous preparations of magnetic seeds by finely grinding mineral magnetite or specially synthesizing them separately in an aqueous solution. In this way, the growth of the seeds and their adsorption on the minerals simultaneously take place in the same slurry. That after MIS the recovery of weakly magnetic mineral limonite in a magnetic separator increased means the formation and adsorption of magnetic seeds on the surface of iron mineral limonite. The magnetization effect was evaluated by limonite recovery at a magnetic strength of 3.500 Gs in a magnetic separator.Mineral limonite was properly magnetized in the following slurry condition: molar ratio of Fe3+ to Fe2+ 1:3, slurry temperature of 45℃ and pH 10.5. The selectivity of the magnetization between minerals limonite and quartz was improved by adding surfactant sodium oleate.
Magnetization Limonite Iron salts Sodium oleate Magnetic separation
X. Q. Wu Y. L. Ai
School of Minerals processing & Bio-engineering, 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
865-870
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）