Overall utilization and treating process of iron ore mine
A technology for iron ore tailings and processes, applied in the field of overall utilization and disposal of iron ore tailings, can solve the problems of dehydration, difficult filtration, low economic benefits, and different comprehensive utilization methods, so as to reduce the amount of tailings and reduce costs. Treatment costs, elimination of potential safety hazards, and significant reduction in emissions
Inactive Publication Date: 2009-08-26
SINOSTEEL MAANSHAN INST OF MINING RES
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Problems solved by technology
Lack of technologies that are efficient, environmentally friendly, economical and applicable, use large quantities, and can consume all tailings
[0007] (2) There are many types and complex components, and the properties of tailings in different mines are also very different, and the methods of comprehensive utilization are different
[0008] (3) The particle size of tailings is fine, the content of valuable elements is relatively low, it is difficult to dewater and filter, it is difficult to recycle and comprehensively utilize, and the cost is high
[0009] (4) Tailings building materials products have large capacity and low added value, and the radiation range of product sales is limited (≤50km), so it is difficult for people to accept tailings building materials products
[0010] (5) The investment in tailings treatment and disposal is large, but the economic benefits are generally small, mainly reflected in environmental benefits and social benefits
[0011] These phenomena have brought certain difficulties to the emission reduction and comprehensive utilization of solid waste in mines.
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[0028] In order to further describe the present invention, the overall utilization and disposal process of iron ore tailings of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0029] figure 1 The tailings processed in the process are the tailings of the dressing plant of Gushan Mining Co., Ltd. of Masteel Group. See Table 1 for the particle size composition screening and water analysis results of the sample, and Table 2 for the multi-element analysis results of the sample.
[0030] Sample particle size composition Table 1
[0031] Particle size (mm)
Yield(%)
Grand total(%)
+0.5
19.3
19.3
-0.5～+0.2
12.8
32.1
-0.2～+0.16
5.3
37.4
-0.16～+0.10
2.7
40.1
-0.10～+0.076
4.9
45.0
-0.076～+0.037
14.6
59.6
-0.037～+0.019
8.9
68.5
-0.019～+0.010
...
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The invention discloses an overall utilization and treating process of iron ore mine, which comprises the following steps: (1) according to a grading process, separating coarse grain ore mine from the iron ore mine, in which SiO2 is not less than 40%, wherein, the content of 0.16mm grade in the coarse grain ore mine is not more than 10%; (2) according to a magnetic separation method, recovering the iron mine from the fine grain ore mine separated by the grading process, thus obtaining a rough concentrate and a fine new ore mine; (3) performing the dehydration onto the fine grain ore mine or the fine new ore mine via a densifier and a filter to obtain a fine dry ore mine, wherein, the water content is not more than 20%; (4) discharging the fine dry ore mine to a dry ore mine storage yard or using the fine dry ore mine as industrial raw material. The invention has advantages that: valuable component can be overall recovered, the ore mine can be greatly utilized, meanwhile, zero ore discharge in the ore mine base can be achieved. Accordingly, the invention is widely used for overall utilization and safety treatment of magnetic iron ore and hematite ore mine.
Description
technical field [0001] The invention relates to a tailings utilization and disposal technology, in particular to an overall utilization and disposal process of iron ore tailings, which can be widely used in the comprehensive utilization and safe disposal of magnetite and hematite ore dressing tailings, and is especially suitable It is mainly concerned with the overall utilization and safe disposal of magnetite ore and hematite ore dressing tailings whose gangue minerals are mainly quartz. Background technique [0002] Tailings are the wastes discharged by the concentrator after grinding the ore and selecting "useful components" under specific economic and technical conditions, that is, the remaining solid waste after the ore has been separated into concentrate. Generally, it is a solid mining waste formed by natural dehydration of tailings pulp discharged from a concentrator. It is the main component of solid industrial waste. It contains a certain amount of useful metals an...
Claims
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Login to View More IPC IPC(8): B03C1/00B07B1/00B04C9/00
Inventor 李俊宁杨任新常前发孙炳泉王炬李亮
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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