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A special pumping agent for full tailings paste cemented filling slurry and its application

A technology of cemented filling and full tailings, applied in the field of pumping agent, can solve the problems of disparity and unreachable slurry properties, and achieve the effects of improving fluidity, viscosity and stability.

Inactive Publication Date: 2015-08-19
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The slurry in cement concrete is mainly composed of cement clinker, fly ash, slag powder and water, while the slurry in the full tailings paste cemented filling slurry is mainly composed of a large number of ultrafine tailings particles, a small amount of cement clinker ( Including fly ash, slag fine powder) and water, so the properties of the two slurries are very different. Directly using the pumping agent in the construction industry as the pumping agent for the cemented filling slurry of the whole tailings paste body may reach less than expected effect

Method used

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  • A special pumping agent for full tailings paste cemented filling slurry and its application
  • A special pumping agent for full tailings paste cemented filling slurry and its application
  • A special pumping agent for full tailings paste cemented filling slurry and its application

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Experimental program
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Effect test

Embodiment 1

[0018] A special pumping agent for full tailings paste cemented filling slurry, which is made by mixing polycarboxylate superplasticizer powder, air-entraining agent powder, and tackifier powder;

[0019] The components are proportioned by mass, polycarboxylate superplasticizer powder: air-entraining agent powder: tackifier powder = 0.3: 0.075: 9.625.

[0020] Among them, the water reduction rate of polycarboxylic acid superplasticizer powder exceeds 30%; the air-entraining agent is triterpene saponin powder; the tackifier is made of natural calcium-based bentonite after purification, modification, and thickening. It is: an aqueous solution prepared from modified bentonite. When the content of modified bentonite is 10%, the viscosity of its aqueous dispersion is 3200mPa·S.

[0021] After the above-mentioned components are accurately measured in proportion, they are mixed and stirred evenly to become a special pumping agent for the cemented filling slurry of the whole tailings ...

Embodiment 2

[0026] A special pumping agent for full tailings paste cemented filling slurry, which is made by mixing polycarboxylate superplasticizer powder, air-entraining agent powder, and tackifier powder;

[0027] The components are proportioned by mass, polycarboxylate superplasticizer powder: air-entraining agent powder: tackifier powder = 0.5︰0.05︰9.45.

[0028] Among them, the water reduction rate of polycarboxylic acid superplasticizer powder exceeds 30%; the air-entraining agent is triterpene saponin powder; the tackifier is made of natural calcium-based bentonite after purification, modification, and thickening. It is: an aqueous solution prepared from modified bentonite. When the content of modified bentonite is 10%, the viscosity of its aqueous dispersion is 3200mPa·S.

[0029] After the above-mentioned components are accurately measured in proportion, they are mixed and stirred evenly to become a special pumping agent for the cemented filling slurry of the whole tailings past...

Embodiment 3

[0034] A special pumping agent for full tailings paste cemented filling slurry, which is made by mixing polycarboxylate superplasticizer powder, air-entraining agent powder, and tackifier powder;

[0035] The components are proportioned by mass, polycarboxylate superplasticizer powder: air-entraining agent powder: tackifier powder = 0.8: 0.025: 9.175.

[0036] Among them, the water reduction rate of polycarboxylic acid superplasticizer powder exceeds 30%; the air-entraining agent is triterpene saponin powder; the tackifier is made of natural calcium-based bentonite after purification, modification, and thickening. It is: an aqueous solution prepared from modified bentonite. When the content of modified bentonite is 10%, the viscosity of its aqueous dispersion is 3200mPa·S.

[0037] After the above-mentioned components are accurately measured in proportion, they are mixed and stirred evenly to become a special pumping agent for the cemented filling slurry of the whole tailings ...

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Abstract

The invention belongs to the technical field of mine filling, and in particular relates to a pumping agent for improving the fluidity and stability of filling slurry cemented with tailings paste and its application. The pumping agent is prepared by mixing the components according to the mass ratio, polycarboxylate superplasticizer powder: air-entraining agent powder: tackifier powder = 0.3~0.8: 0.025~0.075: 9.675~9.125 made. The pumping agent is added to the cemented filling slurry of the whole tailings paste body at a rate of 10‰ of the total solid mass. Adding the pumping agent to the slurry increases the solid concentration and increases the viscosity of the water. The fine particles of tailings and the cement are evenly distributed in the slurry, and the paste cemented filling slurry does not segregate or bleed in the filling area. , No running out of pulp, the consumption of cement is greatly reduced, and it has good environmental and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of mine filling, and in particular relates to a pumping agent for improving the fluidity and stability of filling slurry cemented with tailings paste and its application. Background technique [0002] Full tailings paste cemented filling technology, as a kind of mine filling technology, has developed extremely rapidly in the past 10 years. For this reason, some countries with developed mining industry in the world have invested a lot of manpower and material resources in the research, development and application of paste cemented filling technology. In China, Jinchuan Nonferrous Metals Co., Ltd. , Tonglushan Mine of Daye Nonferrous Metals Company, Yunnan Huize Lead-Zinc Mine, etc. [0003] The more obvious characteristics of foreign paste cemented filling are that the solid concentration can reach 75% to 85%, the amount of cement (cement) is generally 3% to 6% of the total solid mass, and the 28d compressi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/24
Inventor 郑娟荣谷迪赵雪飞
Owner ZHENGZHOU UNIV