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: 2015-04-08
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 an industrial waste slag coagulant, comprising the following components by weight:

[0037] Sodium sulfate 10 parts

[0038] Gypsum 80 parts

[0039] Alum 5 parts

[0040] 5 parts quicklime;

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

[0042]The preparation method of the industrial waste slag gel coagulant is as follows: the above components by weight are placed in a mixer and mixed evenly.

[0043] This embodiment also provides a goaf filling material using the industrial waste slag coagulant, wherein the industrial waste slag is granulated blast furnace slag. The granulated blast furnace slag was...

Embodiment 2

[0045] This embodiment provides an industrial waste slag coagulant, comprising the following components by weight:

[0046] Sodium sulfate 20 parts

[0047] gypsum 35 parts

[0048] 30 parts of quick-hardening cement

[0049] Alum 5 parts

[0050] 10 parts quicklime;

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

[0052] The preparation method of the industrial waste slag gel coagulant is as follows: the above components by weight are placed in a mixer and mixed evenly.

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

Embodiment 3

[0055] This embodiment provides an industrial waste slag coagulant, comprising the following components by weight:

[0056] Sodium sulfate 10 parts

[0057] gypsum 37 parts

[0058] Micro silica fume 20 parts

[0059] Quick-hardening cement 18 parts

[0060] 10 parts alum

[0061] 5 parts quicklime;

[0062] Among them, the sodium sulfate is anhydrous sodium sulfate; the 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, and the silica content is 90wt%; the rapid-hardening cement is made of rapid-hardening Portland cement, and the 3d strength is 43.2MPa; the alum is made of cooked alum stone powder, the fineness is 180 mesh, SiO 2 The content is 45wt%, Al 2 o 3 The content is 22wt%; the quicklime is industrial grade quicklime, and the CaO content is ≥95wt%.

[0063] The preparation method of the industrial waste ...

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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 gelling materials, and in particular relates to a coagulant for stimulating the activity of industrial waste slag and cementing the industrial waste slag to fill goafs and a goaf filling material using the coagulant. Background technique [0002] Since the 21st century, the contradiction between limited resources and energy and unlimited economic development has become increasingly prominent. Recycling waste resources and reducing pollution and emissions have become an important means to promote sustainable economic development. Industrial waste (tailings, granulated blast furnace slag, desulfurized gypsum, dehumidification fly ash, etc.) is one of the largest solid wastes in my country. One of the important signs of no. [0003] In recent years, a lot of research work related to the recycling of industrial waste residues has been carried out in China, but the overall utilization rate is not high. Indust...

Claims

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Application Information

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Patent Type & Authority Patents(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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