Recovery system for recovering magnetite from brown iron ore concentrate
A recovery system, magnetite technology, applied in the direction of magnetic separation, high gradient magnetic separator, solid separation, etc., can solve the problems of waste of resources, low economic benefits, pollution of the environment, etc., to achieve the effect of improving recovery efficiency
Pending Publication Date: 2018-12-14
鹤庆北衙矿业有限公司
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Problems solved by technology
If it is directly discarded, a large amount of solid waste will be generated, which will pollute the environment and cause waste of resources. Re-refining can obtain a large amount of iron-containing ore
[0003] In the cyanidation step of extracting gold at this stage, limonite concentrate (raw ore) needs to be finely ground first, during which most ultra-fine (≤0.02mm) magnetite will be produced, due to ultra-fine magnetic Iron ore has a low specific magnetic susceptibility coefficient, and the magnetic force received during the production process is small, so it is difficult to separate it from limonite concentrate, resulting in low efficiency and low economic benefits in magnetic separation operations.
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[0046] 1. Determination of iron index in the original production mode
[0047] The identified iron concentrate samples were taken from the magnetic separation operation products of a gold beneficiation plant in Yunnan after full-slime cyanidation. The grade of the magnetite concentrate was 63.29%, the yield rate was 2.88%, the iron recovery rate was 6.72%, and the limonite concentrate was 63.29%. The ore grade is 50.95%, the yield rate is 16.79%, and the iron recovery rate is 31.54%; the calculation results of the particle size recovery rate of iron are shown in Table 1:
[0048] Table 1 Calculation results of recovery rate of iron particles
[0049]
[0050] The metal occupancy rate in the above table refers to the percentage of recovered metals to the original ore metals.
[0051] The calculation results of the recovery rate of magnetic separation products show that the metal occupancy rate of ≤0.02mm particle size in the magnetite concentrate is 0.017%, which is basically...
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Abstract
The invention belongs to the technical field of magnetite recovery, in particular to a recovery system for recovering magnetite from brown iron ore concentrate. The recovery system comprises a slurrymixing tank, a semi-countercurrent cylinder type magnetic separator A, a semi-countercurrent cylinder type magnetic separator B, a semi-countercurrent cylinder type magnetic separator C, a high-gradient magnetic separator A, a semi-countercurrent cylinder type magnetic separator A', and a semi-countercurrent cylinder type magnetic separator B'. The upper end of the semi-countercurrent cylinder type magnetic separator A is provided with the slurry mixing tank through a conveying pipeline, the lower end of the semi-countercurrent cylinder type magnetic separator A is provided with a dischargingport of magnetite concentrate A and a discharging port of tailing A; the discharging port of the magnetite concentrate A is connected with a feeding port of the semi-countercurrent cylinder type magnetic separator B, the lower end of the semi-countercurrent cylinder type magnetic separator B is provided with a discharging port of magnetite concentrate B and a discharging port of magnetite middlingore. The recovery system aims at solving the problem that the recovery rate of magnetite in magnetic separation operation is low, magnetic separation by a strong magnetic separator is firstly carriedout, and a weak magnetic separation is then carried out, so as to recover the magnetite from the brown iron ore concentrate, so that the recovery rate of the magnetite is improved, and enterprise benefit is increased.
Description
technical field [0001] The invention belongs to the technical field of magnetite recovery, and in particular relates to a recovery system for recovering magnetite from limonite concentrate. Background technique [0002] Gold is one of the rarer, most precious and highly valued metals. It is not only a special currency used for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communication, aerospace industry and other sectors. The extraction of gold generally goes through the steps of paddle adjustment-cyanidation-replacement of gold-gold mud smelting-gold and so on. The process of extracting gold with cyanide as a leaching solution is called cyanidation gold extraction, which is the main method for extracting gold from ores or concentrates in modern times. The explanation of the mechanism of cyanide on the dissolution of gold is still inconsistent. Most of them believe that gold can form a gold complex and dissolve ...
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IPC IPC(8): B03C1/10B03C1/025
CPCB03C1/025B03C1/10
Inventor 庄世明段胜红尹福兴汪勇周癸武
Owner 鹤庆北衙矿业有限公司