Iron core tailing curing agent, iron core all-tailing cementing composition containing iron core tailing curing agent and application of iron core all-tailing cementing composition to gob of mine

A technology of iron ore tailings and curing agent, which is applied in the iron ore full tailings cementation composition and the filling field of mine goaf, which can solve the technical performance, economic cost, difficulty in meeting the requirements, high cost, and the difficulty of full tailings cementation and curing Large and other problems, to achieve the effect of low cost, high early strength, and broad market prospects

Active Publication Date: 2013-07-10
建研建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The full tailings of the ore contain a large amount of fine particles. The existing filling process requires the filling mixture to contain a large amount of water, which makes the cementation and curing of the full tailings difficult and costly. Economic costs are difficult to meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Weigh the iron ore tailings curing agent raw material according to the following weight: (kg)

[0029] Water-quenched blast furnace slag 0.5; red mud 0.2; sulfur-fixed ash 0.3; triethanolamine 0.03; sodium carbonate 0.02; slaked lime powder (calcium hydroxide) 0.05.

[0030] The water-quenched blast furnace slag is ground until the Blaine specific surface area is 350-700m 2 / kg, the Blaine specific surface area of ​​the red mud is 500-700m 2 / kg.

[0031] In the described sulfur-fixing ash, the sulfur-fixing ash is the undisturbed sulfur-fixing ash directly collected from the fluidized bed boiler flue, and the sulfur-fixing slag is ground to a Blaine specific surface area of ​​350 to 500m 2 / kg.

[0032] (2) Preparation of iron ore tailings curing agent:

[0033] Put 0.5kg of water-quenched blast furnace slag, 0.2kg of red mud, 0.3kg of sulfur-fixed ash, 0.03kg of triethanolamine, 0.02kg of sodium carbonate, and 0.05kg of dry lime powder (calcium hydroxide) into...

Embodiment 2

[0041] (1) Weigh the iron ore tailings curing agent raw material according to the following weight: (kg)

[0042] Water-quenched blast furnace slag 0.5; red mud 0.2; zeolite powder 0.25; calcium chloride 0.02; calcium sulfate 0.02; slaked lime powder (calcium hydroxide) 0.1.

[0043] The water-quenched blast furnace slag is ground until the Blaine specific surface area is 350-700m 2 / kg, the fineness of the zeolite powder is not less than 150 mesh, and the Blaine specific surface area of ​​the red mud is 500-700m 2 / kg.

[0044] (2) Preparation of iron ore tailings curing agent:

[0045] The preparation method is the same as in Example 1.

[0046] (3) Preparation of iron ore tailings cementing composition:

[0047] Whole tailings of iron ore, including dry materials and water, are subjected to thickening treatment for iron ore tailings with high water content, so that the water content, that is, the mass concentration of water, is 37%;

[0048]Add iron ore tailings curing...

Embodiment 3

[0053] Weigh the iron ore tailings curing agent raw material according to the following weight: (kg)

[0054] Water-quenched blast furnace slag 0.55; red mud 0.3; natural pozzolan 0.3; anhydrite powder (calcium sulfate) 0.02; sodium silicate 0.03, sodium hydroxide 0.03.

[0055] The water-quenched blast furnace slag is ground until the Blaine specific surface area is 350-700m 2 / kg, the fineness of the natural volcanic ash is not less than 200 mesh, and the Blaine specific surface area of ​​the red mud is 500-700m 2 / kg.

[0056] (2) Preparation of iron ore tailings curing agent:

[0057] The preparation method is the same as in Example 1.

[0058] (3) Preparation of iron ore tailings cementing composition:

[0059] Whole tailings of iron ore, including dry base material and water, are densely processed for iron ore tailings with high water content, so that the water content, that is, the mass concentration of water, is 35%;

[0060] Add an iron ore tailings solidifying a...

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Abstract

The invention relates to an iron core tailing curing agent, an iron core all-tailing cementing composition containing the iron core tailing curing agent and an application of the iron core all-tailing cementing composition to a gob of a mine and belongs to the technical field of underground mining of metals and nonmetals. The tailing curing agent comprises the following components in parts by weight: 0.4-0.6 part of ground water-granulated blast furnace slag, 0.2-0.3 part of red mud, 0.2-0.4 part of active mineral admixture, 0.03-0.05 part of activity activator and 0.03-0.1 part of hydroxides of alkali metals or hydroxides of alkaline-earth metals. The iron core tailing curing agent provided by the embodiment of the invention is a high-efficiency novel environment-friendly cementing material with low cost and high early strength, can be used for realizing fast filling and fast curing of the gob, can be widely applied to the field of geotechnical engineering, such as mine mining and foundation treatment and has a very wide market prospect.

Description

technical field [0001] The invention belongs to the technical field of metal and non-metallic underground mining, and in particular relates to a curing agent for cementing and filling mines with tailings, an iron ore full tailings cementation composition containing the curing agent, and the application of the composition in goaf mining The filling method of the area. Background technique [0002] After the mineral processing is completed, the mining enterprises usually discharge the waste slag generated during the mineral processing in the form of mud, and these waste slags accumulate over time to form tailings ponds. The tailings pond covers a large area and poses great safety hazards. In addition, the water rich in mineral processing agents in the tailings pond seeps into the ground, which will also cause great pollution to the environment and groundwater. The treatment and comprehensive utilization of tailings has become a major problem that mining and metallurgy enterpr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 周永祥纪宪坤邵正明万宇薛庆王明远
Owner 建研建材有限公司
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