Comprehensive treatment method for mine tailing

A technology for comprehensive treatment and tailings, applied in the field of comprehensive treatment of tailings, can solve the problems of unsatisfactory comprehensive treatment effect, high cost of making bricks from tailings, and potential safety hazards, so as to reduce the input of new products, save resources, and achieve product safety. Effect

Inactive Publication Date: 2008-10-29
王颖
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for comprehensive treatment of tailings to solve the problems in the prior art of high cost of making bricks from tailings, unstable quality, potential safety hazards and unsatisfactory comprehensive treatment effects

Method used

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  • Comprehensive treatment method for mine tailing

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Effect test

Embodiment 1

[0029] 1. Pulp treatment: Copper ore pulp is divided into waste water and slag by pressure filtration. The waste water contains a large amount of cyanide, which is refluxed in a closed way for secondary use in the beneficiation workshop. Zero discharge is achieved. The water content of the slag is about 18%. Not suitable for making bricks directly.

[0030] 2. Slag pretreatment: Add 12 parts of cement and 38 parts of sand to 50 parts of slag, crush and stir, put it into the digestion bin for 2 hours. At this time, the water content of the slag reaches about 10%, which meets the requirements of brick making, and the residual sodium cyanide volatilizes automatically in the process.

[0031] 3. Brick making: After the secondary crushing and stirring, put it into the wheel mill and mix evenly, and then form it, rest in the room for 3 hours, put it into the steam curing kettle for steam curing (about 194°C) for 8 hours, and then leave the kettle. A small amount of residual sodium ...

Embodiment 2

[0033] One, pulp treatment: with embodiment 1.

[0034] 2. Slag pretreatment: Add 10 parts of cement, 30 parts of sandstone and 0.5 part of water glass to 65 parts of slag, crush and stir, and put it into the digestion bin for digestion for 3 hours.

[0035] 3. Brick making: after the secondary crushing and stirring, put it into the wheel mill and mix evenly, and then shape it (standard brick or blind hole brick), rest in the room for 2 hours, and put it in a steam curing kettle for steam curing (about 194°C) 6h, take out the kettle.

[0036] The steam-cured brick made of copper ore slag completely decomposes the residual sodium cyanide in the tailings by adding water glass and cement and undergoing high-pressure steam curing. The products have passed the tests of Shangluo City Product Quality Supervision and Inspection Institute and Xi'an University of Architecture and Technology for flexural resistance, compression resistance, radioactivity and sodium cyanide removal experi...

Embodiment 3

[0038] 1. Pulp treatment: The gold mine pulp is separated into waste water and slag by pressure filtration. The waste water contains a large amount of cyanide, which is refluxed in a closed way for secondary use in the beneficiation workshop, achieving zero discharge.

[0039] 2. Slag pretreatment: Add 12 parts of cement and 28 parts of sand to 60 parts of slag, crush and stir, put it into the digestion bin for 2 hours.

[0040] 3. Brick making: After the secondary crushing and stirring, put it into the wheel mill and mix evenly, and then shape it (blind hole brick), rest in the room for 1.5 hours, put it into the steam curing kettle for 8 hours, and leave the kettle.

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Abstract

The invention relates to the technical field of comprehensive using of mine tailings, in particular to a method for comprehensively treating the mine tailings. The invention solves the problems of high cost, unstable quality and having potential safety hazard in the process of preparing bricks by the mine tailings and nonideal comprehensive treatment effect existing in the prior art; the technical scheme provided by the invention is a comprehensive treat method for the mine tailings, comprising the following steps sequentially: 1. pulp processing; 2. slag pretreatment; 3. steaming nourishing and making bricks. Compared with the prior art, the method for comprehensively treating the mine tailings has the following advantages: 1. solving a plurality of problems existing in the mine tailings radically; 2. saving large funds; 3. saving vast resources; 4. simple technological method; 5. safe, reliable and environmental protection products; 6. low cost; 7. good comprehensive treatment effect, which has significant practical meaning.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of mine tailings, in particular to a method for comprehensive treatment of tailings. Background technique [0002] With the continuous exploitation of mineral resources by humans, the discharge of tailings is increasing day by day. As we all know, the accumulation of tailings is likely to cause air, soil and water pollution, and damage the ecological environment. If it is not handled properly, it will cause dangers such as mudslides and dam failures, and even lead to geological disasters in severe cases. Therefore, the disposal of mine tailings has always been a worldwide problem. [0003] At present, the development and utilization of tailings are mainly used as building materials. In this regard, foreign countries started earlier. Among them, the former Soviet Union carried out the research and production of tailings building materials as early as the early 1960s. For exampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/12B09B3/00
CPCC04B28/12C04B2111/00017C04B28/02Y02W30/91C04B14/06C04B18/12C04B18/141C04B40/024C04B18/064C04B12/04
Inventor 王颖
Owner 王颖
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