Mine whole-tailing and composite superfine cement bond filling material

A technology of cementing filling materials and ultra-fine cement, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of large cement content, high cost of filling materials, and difficult dispersion of cement particles The effect of reducing the dosage and reducing the cost

Inactive Publication Date: 2013-04-17
郑州工大建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there are a lot of fine particles (less than 0.075mm) or ultrafine particles (less than 20μm) in the tailings, the cement particles are not easy to disperse in the tailings, that is, the cement particles are aggregated in the tailings. The tailings cemented filling material must meet the transporta

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A mine full tailings composite superfine cement cemented filling material, which is formed by mixing composite superfine cement, whole tailings and water, and its mass ratio is: composite superfine cement: full tailings: water = 30:970: 150; the composite superfine cement is formed by mixing dispersant and superfine cement, and its mass ratio is: dispersant: superfine cement=0.5:100; the superfine cement is composed of Portland cement clinker and Composed of gypsum, wherein the mass ratio of various components is: Portland cement clinker: gypsum = 95:5; the fineness of the ultrafine cement is 800m 2 / kg; the full tailings is any one of mine siliceous tailings, silicon-iron full tailings, aluminum full tailings, and sulfur full tailings; the water is urban tap water or does not affect the filling material performance water. Stir the composite ultra-fine cement, full tailings and water according to the above ratio evenly to form a mine full tailings composite ultra-fine ...

Embodiment 2

[0015] A mine full tailings composite superfine cement cemented filling material, which is formed by mixing composite superfine cement, whole tailings and water, and its mass ratio is: composite superfine cement: full tailings: water = 60:940: 250; the composite superfine cement is formed by mixing dispersant and superfine cement, and its mass ratio is: dispersant: superfine cement = 0.3:100; the superfine cement is made of Portland cement clinker and gypsum, wherein the mass ratio of various components is: Portland cement clinker: gypsum = 90:10; the fineness of the ultrafine cement is 600m 2 / kg; the full tailings is any one of mine siliceous tailings, silicon-iron full tailings, aluminum full tailings, and sulfur full tailings; the water is urban tap water or does not affect the filling material performance water. Stir the composite ultra-fine cement, full tailings and water according to the above ratio evenly to form a mine full tailings composite ultra-fine cement cement...

Embodiment 3

[0020] A mining full tailings composite superfine cement cemented filling material, which is formed by mixing composite superfine cement, full tailings and water, and its mass ratio is: composite superfine cement: full tailings: water = 100:900: 350; the composite superfine cement is formed by mixing dispersant and superfine cement, and its mass ratio is: dispersant: superfine cement = 0.1:100; the superfine cement is made of Portland cement clinker and gypsum, wherein the mass ratio of various components is: Portland cement clinker: gypsum = 95:5; the fineness of the ultrafine cement is 400m 2 / kg; the full tailings is any one of mine siliceous tailings, silicon-iron full tailings, aluminum full tailings, and sulfur full tailings; the water is urban tap water or does not affect the filling material performance water. Stir the composite ultra-fine cement, full tailings and water according to the above ratio evenly to form a mine full tailings composite ultra-fine cement cemen...

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PUM

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Abstract

The invention discloses a mine whole-tailing and composite superfine cement bond filling material, which is formed by mixing the components such as composite superfine cement, whole tailings and water, and a mass ratio of the composite superfine cement to the whole tailings to the water is (30-100): (900-970): (150-350); and the composite superfine cement is formed by mixing a dispersing agent and superfine cement, and a mass ratio of the dispersing agent to the superfine cement is (0.1-0.5): 100. According to the invention, the bond filling material is formed by mixing the composite superfine cement, the whole tailings and water, the fineness of the superfine cement is 400-800 m<2>/kg (the fineness of general purpose portland cement is 300-400 m<2>/kg), the finer the cement particles, the greater the surface action (namely the cement particles are more likely to cluster), the superfine cement particles in the composite superfine cement are dispersed in the whole tailing particles through the dispersing agent, so that the composite superfine cement bond filling material can meet the requirements of filling material conveying and strength, therefore, the mixing amount of the composite superfine cement is reduced, and the filling material cost is lowered.

Description

technical field [0001] The invention relates to a mine full tailings composite superfine cement cemented filling material. Background technique [0002] Mine full tailings cemented filling method is a new type of mining technology, that is, the ore mined in the mine, the waste after refining useful metals (that is, full tailings) plus a curing agent (that is, cement), and then fill it into the goaf area method. At present, the mine tailings cemented filling material is mixed uniformly with the whole tailings, general-purpose Portland cement, and water in proportion, and then sent to the underground mining site through self-flowing pipelines or pressurized pumps. Because there are a lot of fine particles (less than 0.075mm) or ultrafine particles (less than 20μm) in the tailings, the cement particles are not easy to disperse in the tailings, that is, the cement particles are aggregated in the tailings. The tailings cemented filling material must meet the transportation cond...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B18/12
CPCY02W30/91
Inventor 郑娟荣赵振波栗海玉
Owner 郑州工大建材有限公司
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