Technique for extracting iron ore concentrate powder from sand iron mine of gobi desert
A technology of Gobi Desert and iron powder, applied in the direction of magnetic separation, solid separation, sieve, etc., can solve the problems of immature mining technology, high production cost, failure to meet the basic requirements of steel mills, etc., and achieve significant economic and social benefits. effect of benefit
Inactive Publication Date: 2011-08-17
山东科力华电磁设备有限公司
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[0002] There are abundant iron resources in the vast Gobi Desert in my country, but due to the low grade of iron and immature mining technology, my country has not built a large-scale sand iron ore mining base
Generally, the sand iron ore separation process is to directly enter the ore sand into the ball mill, and then directly enter the magnetic separator for iron separation. In this way, not only the mill has a large workload, high energy consumption, and high production costs, but also the selected Concentrate iron powder is of low grade and cannot meet the basic requirements of steel mills, so it has no value at all
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[0024] As shown in the accompanying drawing, the process of extracting iron concentrate powder from Gobi sand iron ore adopts dry separation and wet separation, including the steps
[0025] 1) After sieving, the raw ore is first screened with a plane vibrating screen to remove ore particles larger than 15mm. Experiments have proved that these particles have a large beneficiation ratio and have no beneficiation value. The ore particles below 15mm are re-screened with a circular vibrating screen on the conveyor Remove the ore particles larger than 5mm. In the same way, these particles have a large beneficiation ratio and have no beneficiation value. Most of the tailings are removed, which greatly reduces the production cost in the next step. The ≤5mm ore particles are sent to the double-roller dry by conveyor belt. Type magnetic separator is used for magnetic separation, and the grade of semi-finished product concentrate after magnetic separation is increased from about 7% to abo...
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The invention discloses a technique for extracting iron ore concentrate powder from sand iron mine of gobi desert, which adopts dry concentration and wet concentration and comprises the steps of screening, dry concentration, primary selection, first stage ball-milling, magnetic separation, preparation by screening and magnetic separation purification; finally, qualified ore concentrate powder canbe obtained. The technique can be used for selecting more than 64% of high quality iron ore concentrate from the sand iron mine with extremely low quality, thus changing waste into valuable and having remarkable economical and social benefits.
Description
technical field [0001] The invention relates to a method for extracting iron, in particular to a new method for extracting iron concentrate from extremely low-grade iron sand ore in the Gobi Desert. Background technique [0002] There are abundant iron resources in the vast Gobi Desert in my country, but due to the low grade of iron and immature mining technology, my country has not built a large-scale sand iron ore mining base. Generally, the sand iron ore separation process is to directly enter the ore sand into the ball mill, and then directly enter the magnetic separator for iron separation. In this way, not only the mill has a large workload, high energy consumption, and high production costs, but also the selected Concentrate iron powder is of low grade and cannot meet the basic requirements of steel mills, so it has no value at all. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a process for extracting ...
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IPC IPC(8): B03B7/00B03C1/10B03C1/30B07B1/28
Inventor 郭宝华衣波
Owner 山东科力华电磁设备有限公司