Technique for separating mineral from weak magnetic separation iron tail sand

Abstract

The invention relates to a method used for separating minerals from weak magnetic iron tails, which is divided into six stages: primary sorting of strong magnetic minerals, separation of strong magnetic minerals, separation of weak magnetic minerals, separation of non-magnetic minerals, treatment of ore pulp water during the ore dressing process and treatment of finish tail sand. According to the magnetic susceptibility differences, specific gravitydifferences and floating differeces between minerals, magnetite, vanadium titano-magnetite, mixed ore of apatite and xenotime and hematite feldspar concentrate can be separated from the weak magnetic iron by using techniques of crude separation with a strong magnetic separator, refine separation with a weak magnetic separator, gravity separation, floatation, electric separation, etc. The method has advantages of standard production technique, low cost for industrialized production, great variety of separated minerals, stable quality and high separating efficiency, thereby having significant social and economic benefits.

Description

Technical field [0001] The process of separating minerals from the tailings of weak magnetic iron separation belongs to the reuse technology of mineral resources. Background technique [0002] A large amount of tailings produced in the weak magnetic iron separation process of magnetite in my country is generally not fully utilized and is disposed of as industrial waste residue. Abandoned tailings contain a large amount of useful minerals, such as Yangshanzhuang magnetite in Hancheng City, Shaanxi Province. In the tailings separation test of weak magnetic separator, the first stage was ground to a particle size of 0.76mm, and the second stage was ground to a particle size of 0.043mm. The 1500Oe and 2500Oe two-stage weak magnetic separators select magnetite and vanadium-titanium magnetite, which are 5-8% and 5-6% of the total tailings respectively. Separation, flotation, gravity separation, electric separation, the selected minerals are apatite, hematite-limonite mixed concen...

AI Technical Summary

Problems solved by technology

[0002] A large amount of tailings produced in the weak magnetic iron separation process of magnetite in my country are generally not fully utilized and are all disposed of as industrial waste residues.