Method for repairing abandoned mine by using titanium gypsum as impermeable lining

A technology of titanium gypsum and anti-seepage layer, which is applied in the field of repairing abandoned mines using titanium gypsum as an anti-seepage lining, can solve the problems of non-conformity with solid waste recycling, high landfill disposal costs, and limited disposal destinations, and achieve the goal of promoting The effect of improving the development and social green concept, improving the quality of the ecological environment, and saving disposal costs

Active Publication Date: 2022-01-18
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Problems solved by technology

Titanium gypsum has the characteristics of limited disposal destination, high cost of landfill disposal, and low utilization rate, which does not conform to the principle of solid waste recycling in my country

Method used

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  • Method for repairing abandoned mine by using titanium gypsum as impermeable lining

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Embodiment Construction

[0026] The above-mentioned content of the present invention will be described in further detail below by the form of the embodiment, but this should not be interpreted as the scope of the above-mentioned theme of the present invention being limited to the following embodiments, all technologies realized based on the above-mentioned content of the present invention belong to scope of the invention.

[0027] Such as figure 1 As shown, according to a method for repairing an abandoned mine using titanium gypsum as an anti-seepage lining according to an embodiment of the present invention, the anti-seepage lining 1, the leachate drainage layer 2, and the filling material layer 3 are sequentially arranged from bottom to top. 4. Closing soil layer 4. The titanium gypsum in the anti-seepage lining 1 comes from a titanium dioxide production enterprise in Anhui, which is representative of the industry. Titanium gypsum is made of titanium concentrate (main component TiO2≥46%) through "...

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Abstract

The invention relates to a method for repairing an abandoned mine by using titanium gypsum as an impermeable lining. An overall structure for repairing the abandoned mine is composed of the impermeable lining, a leachate guiding and discharging layer, a filling material layer and a sealing soil covering layer in sequence from bottom to top, and the impermeable lining is made of the titanium gypsum. A construction method comprises the following steps that firstly, an impermeable layer is laid, secondly, the leachate guiding and discharging layer is laid, then, the material layer is filled, and finally, the sealing soil covering layer is formed. According to the method for repairing the abandoned mine by using the titanium gypsum as the impermeable lining, the titanium gypsum is used as the raw material of the impermeable lining, the source is rich, solid waste resources are fully utilized, a large amount of treatment cost is saved for the titanium dioxide industry, a large amount of raw materials and resources are saved, and good economic and social benefits are achieved.

Description

technical field [0001] The invention relates to the field of abandoned mine restoration and solid waste pollution prevention and control, in particular to a method for repairing abandoned mines by using titanium gypsum as an anti-seepage lining. Background technique [0002] For the restoration of abandoned mines, our country is in the stage of exploration and practice. The different properties of various metal or non-metal mines lead to different difficulties in the restoration of abandoned mines. At present, we have a large number of abandoned mines that need to be repaired urgently. [0003] At present, the market demand for titanium dioxide is large, but titanium gypsum, as the main solid waste produced in the production process of enterprises in this industry, has a huge production volume, and the annual production volume of large-scale enterprises reaches more than 1 million tons. Titanium gypsum has the characteristics of limited disposal destination, high cost of la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D31/02E03F3/04E03F5/04B09B1/00
CPCE02D3/00E02D31/025E03F3/04E03F5/04B09B1/00Y02W30/30
Inventor 王俊杰张俊方正焦少俊
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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