Method for preparing paste filling material by using oil shale waste residue

A technology of oil shale waste residue and paste filling, which is applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve environmental pollution, land occupation and other problems, to avoid large accumulation, reduce occupation, The effect of improving the utilization rate

Active Publication Date: 2011-06-29
FUSHUN MINING IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing paste filling materials with oil shale waste residue, which can turn oil shale waste residue into treasure, thereby solving the problems of land occupation and environmental pollution, and at the same time better achieve oil The purpose of comprehensive utilization of shale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] ① Crush the oil shale waste residue with a jaw crusher, and use a vibrating screen to sieve out blocky materials smaller than 13 mm to obtain the oil shale waste residue aggregate for use. The gradation is 1-3 mm, accounting for 25%, and 3-3 mm 6mm accounts for 25%, 6-13mm accounts for 50%;

[0017] ②Take another oil shale waste residue, mix it with quicklime according to the mass ratio of 5:1, put it in a ball mill and grind it for 15-60 minutes, and grind it into 300-600 mesh oil shale waste residue fine powder for use;

[0018] ③ Grind water slag to 300-600 mesh water slag fine powder for later use;

[0019] ④ Take alum, organic additives and the above-mentioned oil shale waste residue aggregate, oil shale waste residue fine powder and water slag fine powder and put them into the stirring medium and stir for 3 minutes until uniformly mixed. The percentages of each material are: alum: 0.8%, Acrylic acid: 0.5%, shale waste slag aggregate: 55%, shale waste slag fine po...

Embodiment 2

[0023] ① Crush the oil shale waste residue with a jaw crusher, and use a vibrating sieve to screen out lumpy materials smaller than 13 mm to obtain oil shale waste residue aggregates for use. The gradation is about 1-3 mm, accounting for 25%, 3 -6mm accounts for 25%, 6-13mm accounts for 50%;

[0024] ② Take another oil shale waste residue, mix it with quicklime according to the mass ratio of 5.25:1, put it in a ball mill and grind it for 15-60 minutes, and grind it into 300-600 mesh oil shale waste residue fine powder for use;

[0025] ③ Grind water slag to 300-600 mesh water slag fine powder for later use;

[0026] ④ Take alum, organic additives and the above-mentioned oil shale waste residue aggregate, oil shale waste residue fine powder and water slag fine powder and put them into the stirring medium and stir for 3 minutes until uniformly mixed. The percentages of each material are: alum: 0.8%, Acrylic acid: 0.6%, shale waste slag aggregate: 55%, shale waste slag fine powd...

Embodiment 3

[0030] ① Crush the oil shale waste residue with a jaw crusher, and use a vibrating sieve to screen out lumpy materials smaller than 13 mm to obtain oil shale waste residue aggregates for use. The gradation is about 1-3 mm, accounting for 25%, 3 -6mm accounts for 25%, 6-13mm accounts for 50%;

[0031] ② Take another oil shale waste residue, mix it with quicklime according to the mass ratio of 5.25:1, put it in a ball mill and grind it for 15-60 minutes, and grind it into 300-600 mesh oil shale waste residue fine powder for use;

[0032] ③ Grind water slag to 300-600 mesh water slag fine powder for later use;

[0033] ④ Take alum, organic additives and the above-mentioned oil shale waste residue aggregate, oil shale waste residue fine powder and water slag fine powder and put them into the stirring medium and stir for 3 minutes until they are evenly mixed. The percentages of each material are: alum: 1%, Acrylic acid: 0.6%, shale waste slag aggregate: 58%, shale waste slag fine ...

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Abstract

The invention discloses a method for preparing paste filling material by using oil shale waste residue, which comprises the following steps: (1) crushing oil shale waste residue and screening to obtain oil shale waste residue aggregate; (2) mixing oil shale waste residue with quick lime, grinding for 15 to 60 minutes to obtain 300 to 600-mesh oil shale waste residue fine powder for later use; (3) grinding water tempered slag ash to obtain 300 to 600-mesh water tempered slag fine powder for later use; (4) uniformly mixing alum, an organic additive, the oil shale waste residue aggregate, the oil shale waste residue fine powder and the water tempered slag fine powder; and (5) adding an alkali activator at a mass concentration of 5 to 10 percent into the mixture obtained by the step (4), and uniformly mixing to obtain the paste filling material. When the method is used, the oil shale waste residue can be fully used, the utilization rate is increased to 70 and 85 percent, the paste filling material meets coal filling requirements, a new approach is developed for the exploitation of coal bed beneath three strata, economic benefit is increased, waste is changed into valuable material, bulk deposition of waste residue is avoided, land occupation is reduced and environmental pollution is reduced.

Description

1. Technical field [0001] The invention relates to a method for preparing paste filling material from oil shale waste residue. 2. Background technology [0002] Coal is a primary energy that tends to be exhausted. At present, there are fewer and fewer coal resources that are easy to mine. Although the recoverable reserves are still considerable, most of them are coal seams under villages or buildings, and mining is relatively difficult without demolition. Like this, not only caused the huge waste of coal resource, also seriously restricted the normal production of mine. At present, there are two main ways to realize coal mining without demolition and relocation: strip mining and filling mining. Strip mining is one of the effective methods to control surface movement and deformation. Specifically, it refers to extracting coal compacted under some villages or buildings while greatly reducing surface subsidence. The biggest advantage of this method is that it does not change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B18/12C04B18/14
CPCY02W30/91
Inventor 韩放张振庭高健赵鑫李理
Owner FUSHUN MINING IND GROUP
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