Extremely lean magnetite beneficiating process
A technology for separating and separating lean magnetite, which is applied in the separation technology field of extremely lean magnetite, can solve the problems of increased ore feeding, high grade of tailings, impact on the environment, etc., so as to reduce the cost of beneficiation and achieve significant economic benefits. , the effect of saving energy
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[0022] The specific embodiments of the present invention will be described below in conjunction with the drawings.
[0023] Such as figure 1 As shown, the ultra-lean magnetite separation process of the present invention is characterized by adopting the method of "wet pre-selection, single magnetic separation". During the pre-selection, 25-30% of the tailings are thrown away to make the grinding of the ball mill The amount is reduced and the concentrate grade is increased to 63-64%. The specific steps are as follows:
[0024] 1) Feed the raw ore with a particle size of 0~5mm and a concentration of 35~45% into the wet pre-selection.
[0025] 2) The wet pre-selected concentrate is fed to a closed-circuit grinding system consisting of a ball mill and a classification, and the tailings of the wet pre-selected are discarded.
[0026] 3) One stage of magnetic separation is fed into one stage of grading overflow,
[0027] 4) A stage of magnetic separation concentrate is fed into a secondary c...
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