Technology for preparing iron ore concentrate
A preparation process and iron concentrate technology, which is applied in the field of iron concentrate preparation process, can solve the problems of poor economic benefits and low price of iron concentrate
Active Publication Date: 2011-04-06
CINF ENG CO LTD
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Problems solved by technology
[0002] In iron polymetallic ore, iron concentrate can be obtained after two magnetic separations. The grade of iron concentrate is always 60%-61%, and the recovery rate is about 65%. The price is not high, the economic benefit is not good
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Embodiment 1
[0015] The Huangshaping iron-polymetallic ore dressing plant in Chenzhou, Hunan Province mainly deals with iron ore and polymetallic ore. In actual production, the two kinds of ores have not been strictly separated and sorted. Production process see figure 2 , the grade of raw ore is about 11%, the grade of iron concentrate is about 60-61%; the theoretical recovery rate of iron concentrate is about 65%. After using this process, the final grade of iron concentrate is increased from 60% to 63%. The recovery rate is increased to 68%, and the economic benefit is good.
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The invention discloses technology for preparing iron ore concentrate, which comprises the following steps of: preparing coarse iron ore concentrate subjected to magnetic separation twice, pretreating the coarse iron ore concentrate in a cylinder screen, concentrating undersize products of the cylinder screen through a magnetic screening machine, and combining oversize products of the magnetic screening machine with oversize products of the cylinder screen; and dehydrating in a magnetic dehydration tank, regrinding the dehydrated products in a regrinding machine, disaggregating iron ore which is not subjected to full monomer disaggregation, performing magnetic separation on the reground products in a weak magnetic separation machine so as to prepare the iron ore concentrate, and mixing the iron ore concentrate with the undersize products of the magnetic screening machine to obtain total iron ore concentrate. Therefore, different-magnetism iron ores are effectively separated and non-disaggregated iron ores in the coarse iron ore concentrate are disaggregated by using characteristics of magnetic screening machine equipment so as to improve the grade and recovery rate of the iron ore concentrate, and the quality grade of the iron ore concentrate can be effectively improved.
Description
technical field [0001] The invention relates to a preparation process of iron concentrate, in particular to a process for improving the quality of iron coarse concentrate in iron polymetallic ore. Background technique [0002] In iron polymetallic ore, iron concentrate can be obtained after two magnetic separations. The grade of iron concentrate is always 60%-61%, and the recovery rate is about 65%. The price is not high, and the economic benefit is not good. Therefore, it is necessary to improve the preparation process of iron concentrate to improve the grade and recovery rate of iron concentrate and improve economic benefits. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a preparation process of iron concentrate that can improve the grade and recovery rate of iron concentrate in view of the above-mentioned deficiencies in the prior art. [0004] In order to solve the above-mentioned technical problems, the ...
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IPC IPC(8): B03C1/30
Inventor 邓春华黄光洪陈正军
Owner CINF ENG CO LTD