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Preparation method of underground filling packing of copper slag ore dressing tail slag iron extraction tailings

A mine tailings technology, which is applied in the field of comprehensive utilization of solid waste, can solve problems such as environmental pollution of tailings, achieve the effects of reducing pollution, realizing economy, and reducing usage

Inactive Publication Date: 2015-03-25
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for addressing the above-mentioned deficiencies in the prior art, to provide a method that can effectively solve the problems of tailings stockpiling and environmental pollution after copper slag beneficiation tailings and iron extraction, and use tailings Filling underground in mines to truly achieve the goal of zero discharge of copper slag beneficiation tailings

Method used

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  • Preparation method of underground filling packing of copper slag ore dressing tail slag iron extraction tailings
  • Preparation method of underground filling packing of copper slag ore dressing tail slag iron extraction tailings
  • Preparation method of underground filling packing of copper slag ore dressing tail slag iron extraction tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Table 1 shows the chemical composition of the copper slag used in Example 1, the beneficiation tailings and the iron tailings.

[0020] Table 1 Chemical composition of copper slag beneficiation tailings and iron tailings (%)

[0021]

[0022] At room temperature, the copper slag beneficiation tailings and iron-extracted tailings are mixed evenly with rod grinding according to the mass ratio of 6:4 to form a mixed aggregate of tailings and rod grinding after iron extraction; according to the mass ratio of 1:5.5, 425 cement Add it to the mixed aggregate, mix well, add water to form a slurry with a concentration of 78% by mass, inject the obtained slurry into a mold and make a filling mortar block, which is used for filling in underground mining sites.

[0023] Table 2 shows the compressive strength test values ​​of the filled mortar blocks 3d, 7d, and 28d.

[0024] Table 2 Compressive strength values ​​of filling block 3d, 7d, 28d (MPa)

[0025]

Embodiment 2

[0027] Table 3 shows the chemical composition of the raw material copper slag ore dressing tailings and iron tailings used in Example 2.

[0028] Table 3 Chemical composition of copper slag beneficiation tailings and iron tailings (%)

[0029]

[0030] At room temperature, the copper slag beneficiation tailings and iron-extracted tailings are mixed evenly with rod grinding according to the mass ratio of 7:3 to form a mixed aggregate of tailings and rod grinding after iron extraction; according to the mass ratio of 1:4, 325 cement Add it to the mixed aggregate, mix well, add water to form a slurry with a concentration of 78% by mass, inject the obtained slurry into a mold and make a filling mortar block, which is used for filling in underground mining sites.

[0031] Table 4 shows the compressive strength test values ​​of filling blocks 3d, 7d, and 28d.

[0032] Table 4 Compressive strength values ​​of filling block 3d, 7d, 28d (MPa)

[0033]

Embodiment 3

[0035] Table 5 shows the chemical composition of the raw material copper slag beneficiation tailings and iron tailings used in Example 3.

[0036] Table 5 Chemical composition of copper slag beneficiation tailings and iron tailings (%)

[0037]

[0038] At room temperature, the copper slag beneficiation tailings and iron-extracting tailings are mixed evenly with rod grinding according to the mass ratio of 7:3 to form a mixed aggregate of tailings and rod grinding after iron extraction; according to the mass ratio of 1:5, 325 cement Or add one of the 425 cements into the mixed aggregate, mix well, add water, form a slurry with a mass percentage concentration of 76%, inject the obtained slurry into a mold, and make a filled mortar block, which is used for underground mining. filling.

[0039] Table 6 shows the compressive strength test values ​​of filling blocks 3d, 7d, and 28d.

[0040] Table 6 Compressive strength values ​​of filling blocks 3d, 7d, and 28d (MPa)

[0041]...

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Abstract

The invention belongs to the technical field of comprehensive utilization of solid waste, and relates to a preparation method of an underground filling packing of copper slag ore dressing tail slag iron extraction tailings. The method comprises the following steps: recycling valuable metals such as iron, copper and zinc by adopting reduction roasting, melt separation or magnetic separation, and then fully mixing tailings which contain a large amount of gangue components with rod-mill tailings and the like to perform underground filling on mines so as to achieve the quantity reduction, harmlessness and recycling of the tailings. The preparation method belongs to the technical field of comprehensive utilization of the solid waste, and comprises the following steps: performing iron extraction on copper slag ore dressing tail slag, then fully mixing the tailings with the rod-mill tailings, then adding cementitious materials such as cement, fully and uniformly mixing, and adding a proper amount of water to prepare a filling mortar block acted by the tailings, the rod-mill tailings and the cementitious materials together for the filling of the underground mining field. The preparation method disclosed by the invention has the advantages that the tailings can be fully used after the copper slag ore dressing tail slag is subjected to iron extraction, zero stockpiling of the tailings can be achieved, the pollution of the tailings to the environment can be reduced, the consumption of the rod-mill tailings can also be reduced, and the economic and effective utilization of the solid waste can be achieved.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of solid waste, in particular to a method for comprehensive utilization of copper slag beneficiation tailings and tailings after iron extraction, in particular to recovery of valuable metals such as iron, copper and zinc by means of reduction roasting, melting or magnetic separation Finally, the tailings containing a large amount of gangue components are fully mixed with rod grinding and the like to carry out the preparation method of filling materials in underground mines. Background technique [0002] The status quo of my country's mineral resources is that there are few rich ore and more lean ore. With the continuous development of copper smelting, nearly 2 million tons of copper smelting slag will be generated every year, and the trend is increasing year by year. So far, the cumulative amount of copper slag has exceeded 30 million tons, and its stacking area is huge and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/12
CPCY02W30/91
Inventor 杨志强马永峰马晓东芦越刚张鹏孔令军高晓婷董政武金玉芬邓民晖董晔杨粉娟冯艳
Owner JINCHUAN GROUP LIMITED
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