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Industrial waste coagulating agent and goaf filling material using same

A technology of industrial waste residue and coagulant, which is applied in the field of cementitious materials, can solve the problems of large resource consumption, large waste, and high cost, and achieve the effects of adjusting the hydration process, improving strength, and low cost

Active Publication Date: 2014-04-16
南京坤元材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, what the present invention is to solve is that in the existing industrial waste slag filling technology, the cementing material fails to utilize the effective components in the industrial waste slag, and a large amount of cement-like cementitious materials are used, resulting in large resource consumption, a large amount of waste discharge, and To solve the problem of high cost, provide a less-used, low-cost industrial waste slag gel coagulant and goaf filling material using it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a solidifying agent for industrial waste residue, which includes the following components by weight:

[0037] Sodium sulfate 10 parts

[0038] 80 parts plaster

[0039] 5 parts alum

[0040] 5 parts quicklime;

[0041] Among them, sodium sulfate is anhydrous sodium sulfate; gypsum is natural dihydrate gypsum, the content of calcium sulfate dihydrate is ≥85wt%, and the fineness is 200 mesh; the alum is cooked alunite powder with a fineness of 180 mesh, among which, SiO 2 The content is 45wt%, Al 2 O 3 The content is 22wt%; the quicklime adopts industrial grade quicklime, and the content of CaO is ≥95wt%.

[0042] The preparation method of the industrial waste glue solidifying agent is as follows: the above-mentioned weight parts of each component are placed in a mixer and mixed uniformly.

[0043] This embodiment also provides a goaf filling material using the industrial waste slag solidifying agent, wherein the industrial waste slag is granulated blast furn...

Embodiment 2

[0045] This embodiment provides a solidifying agent for industrial waste residue, which includes the following components by weight:

[0046] Sodium sulfate 20 parts

[0047] 35 parts plaster

[0048] Fast hardening cement 30 parts

[0049] 5 parts alum

[0050] 10 parts quicklime;

[0051] Among them, sodium sulfate adopts anhydrous sodium sulfate; fast hardening cement adopts fast hardening sulphoaluminate cement, 3d strength is 30MPa; gypsum adopts natural dihydrate gypsum, calcium sulfate dihydrate content ≥85wt%, fineness 200 mesh; alum adopts Cooked alunite powder, 180 mesh fineness, SiO 2 The content is 45wt%, Al 2 O 3 The content is 22wt%; the quicklime adopts industrial grade quicklime, and the content of CaO is ≥95wt%.

[0052] The preparation method of the industrial waste glue solidifying agent is as follows: the above-mentioned weight parts of each component are placed in a mixer and mixed uniformly.

[0053] This embodiment also provides a goaf filling material using the ind...

Embodiment 3

[0055] This embodiment provides a solidifying agent for industrial waste residue, which includes the following components by weight:

[0056] Sodium sulfate 10 parts

[0057] 37 parts plaster

[0058] Micro silica fume 20 parts

[0059] Fast hardening cement 18 parts

[0060] 10 parts alum

[0061] 5 parts quicklime;

[0062] Among them, sodium sulfate is anhydrous sodium sulfate; gypsum is natural dihydrate gypsum, the content of calcium sulfate dihydrate is ≥85%, and the fineness is 200 mesh; the specific surface area of ​​micro-silica fume is 16000m 2 / kg, the particle size is 0.1μm, the silica content is 90wt%; the fast-hardening cement adopts fast-hardening Portland cement, the 3d strength is 43.2MPa; the alum adopts cooked alunite powder, the fineness is 180 mesh, SiO 2 The content is 45wt%, Al 2 O 3 The content is 22wt%; the quicklime adopts industrial grade quicklime, and the content of CaO is ≥95wt%.

[0063] The preparation method of the industrial waste glue solidifying agent is...

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Abstract

The invention provides an industrial waste coagulating agent which comprises 3-20 wt% of sodium sulfate, 10-80 wt% of gypsum, 0-20 wt% of silica fume, 0-30 wt% of quick hardening cement, 5-75 wt% of alum and 2-10 parts of quick lime. Under the synergistic effect of all components and the condition that no or few cementitious materials are added, a cementation process of industrial waste can be completed by activating the activity of industrial waste and using effective components in industrial waste, a solidification body meeting the strength requirement of the goaf filling material is formed, the cost is low, and indirect discharge of waste cannot be caused. The goaf filling material comprises industrial waste and the industrial waste coagulating agent in a mass ratio of (3:1)-(15:1), the usage amount of the industrial waste coagulating agent is small, the cost is low, indirect discharge of waste cannot be caused, industrial waste can be effectively and reasonably used, and sustainable development of industrial production and economy is guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of cementitious materials, and in particular relates to a solidifying agent for stimulating the activity of industrial waste residues and cementing industrial waste residues to fill goafs, and a goaf filling material using the solidifying agent. Background technique [0002] Since the 21st century, the contradiction between the limited nature of resources and energy and the infinite economic development has become increasingly prominent. Recycling discarded resources and reducing pollution and emissions have become important means to promote sustainable economic development. Industrial waste residues (tailings, granulated blast furnace slag, desulfurization gypsum, wet fly ash, etc.) are one of the largest solid wastes in my country. Whether they can be effectively and rationally used is the success of energy saving, emission reduction and circular economy. One of the important signs of no. [0003] In recent year...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
Inventor 陈爱爱
Owner 南京坤元材料有限公司
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