Method for recovering lignite mine wastes

A technology of recycling and waste, which is applied in the direction of fertilizer mixture, organic fertilizer, fertilization equipment, etc., can solve the problems of polluted water quality, not to mention recycling, and large space stacking, so as to improve the environment, increase industrial added value, and improve yield effect

Active Publication Date: 2015-02-11
锡林浩特市森华生态建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of waste discharged outside will cause surface deformation to occupy a large area of ​​grassland. In particular, carbonaceous gray mudstone will produce powder during the weathering process, which will float in the air under the action of wind, which will have a huge impact on the atmospheric environment and pollute water quality at the same time. , affecting the surrounding living environment
[0003] At present, this kind of waste in lignite mines has not been properly treated, let alone effectively recycled. It not only takes up a lot of space for stacking, but also is not conducive to the protection of the surrounding ecological environment, making the mining and operation management of lignite mines difficult. On the whole, it has always remained in a state of high cost, low added value, and unfriendly to the environment
In view of the existence of the above problems, the present invention proposes a recycling method for lignite mine waste, which can fully recycle and utilize various wastes produced by lignite mine mining, and solve the current environmental and benefit problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for recycling brown coal mine waste, comprising the following steps:

[0021] 1) The charcoal gray mudstone containing lignite, tertiary brownish-red clay, and quaternary aeolian sand produced by lignite open-pit mining are classified and stacked, crushed, and dewatered until the water content is lower than 20%, and then adjusted. The humic acid content of the carbonaceous gray mudstone described above is between 10-40%, for subsequent use;

[0022] 2) In parts by weight, add 2 parts of Tertiary brownish-red clay after step 1) and 3 parts of Quaternary eolian clay after step 1) in 1 part of carbonaceous gray mudstone treated in step 1) sand;

[0023] 3) In the mixture obtained in step 2), add mycorrhizal agent in a ratio of 0.002 kg per cubic meter, and add organic matter at the same time to obtain the fermented material, so that the organic matter accounts for 15% of the total weight of the fermented material. 1. Fermenting and maturing for 15 days under 60%...

Embodiment 2

[0026] A method for recycling brown coal mine waste, comprising the following steps:

[0027] 1) The charcoal gray mudstone containing lignite, tertiary brownish-red clay, and quaternary aeolian sand produced by lignite open-pit mining are classified and stacked, crushed, and dewatered until the water content is lower than 20%, and then adjusted. The humic acid content of the carbonaceous gray mudstone described above is between 10-40%, for subsequent use;

[0028] 2) In parts by weight, add 2 parts of the Tertiary brownish red clay after the treatment of the step 1) into 1 part of the carbonaceous gray mudstone after the treatment of the step 1);

[0029] 3) Add mycorrhizal agent in the mixture obtained in step 2) at a rate of 0.001kg per cubic meter, and add organic matter at the same time to obtain the fermented material, so that the organic matter accounts for 18% of the total weight of the fermented material. , fermented and matured for 10 days under 65% humidity conditi...

Embodiment 3

[0032] A method for recycling brown coal mine waste, comprising the following steps:

[0033] 1) The charcoal gray mudstone containing lignite, tertiary brownish-red clay, and quaternary aeolian sand produced by lignite open-pit mining are classified and stacked, crushed, and dewatered until the water content is lower than 20%, and then adjusted. The humic acid content of the carbonaceous gray mudstone described above is between 10-40%, for subsequent use;

[0034] 2) In parts by weight, add 3 parts of the Quaternary aeolian sand after the treatment of the step 1) to 1 part of the carbonaceous gray mudstone after the treatment of the step 1);

[0035] 3) In the mixture obtained in step 2), add mycorrhizal agent in a ratio of 0.003 kg per cubic meter, and add organic matter at the same time to obtain the fermented material, so that the organic matter accounts for 15% of the total weight of the fermented material. 1. Fermenting and maturing for 15 days under a humidity conditio...

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PUM

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Abstract

The invention provides a method for recovering lignite mine wastes. The method comprises the steps: stacking carbonaceous gray mud rock, tertiary-system brownish-red clay and quaternary-system aeolian sand, which are produced through mining an opencast lignite mine, in a classified manner, crushing, dehydrating, and adjusting the content of humic acid in the carbonaceous gray mud rock to 10-40%; adding 1-3 parts (by weight) of tertiary-system brownish-red clay and/or 2-4 parts (by weight) of quaternary-system aeolian sand into 1 part (by weight) of carbonaceous gray mud rock, so as to obtain a mixture; adding a mycorrhizal microbial agent into the obtained mixture according to the ratio of 0.001-0.003 kilogram: 1 cubic meter while adding organic matters, enabling the weight of the organic matters to be 15-20% the total weight of a fermenting material, and carrying out fermented aging for 10-15 days at the temperature of 40-60 DEG C and the humidity of 55-65%, so as to a soil conditioner, of which the content of humic acid is 40-70%. The method provided by the invention has the advantages that wastes generated from the opencast lignite mine can be effectively recovered, the industrial added value of lignite mining is greatly increased, and the environment of the opencast lignite mine is improved.

Description

technical field [0001] The invention relates to a method for recycling and processing waste, in particular to a method for recycling and processing mine waste, in particular to a method for recycling and processing waste in lignite mines. Background technique [0002] At present, the waste generated after lignite mining includes: carbonaceous gray mudstone, tertiary brown-red clay, quaternary aeolian sand, etc.; especially open-pit mines will generate a large amount of waste during the mining process. Take Mengdong Energy Xier Open-pit Mine in Xilingol League, Inner Mongolia as an example. The mine produces 10 million tons of lignite per year. According to the stripping ratio of 1:3, 30 million cubic meters of carbonaceous gray mudstone, sandstone, Wastes such as tertiary brown-red clay and quaternary aeolian sand are piled up in the dump, occupying a large area of ​​grassland. A large amount of waste discharged outside will cause surface deformation to occupy a large area ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05F11/02C05G3/80
Inventor 冯学志贾爱果袁虎陈永利
Owner 锡林浩特市森华生态建设有限公司
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