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Optimization method of all-solid-waste cementing material and mixed aggregate filling slurry

A technology of cementitious material and filling slurry, which is applied in the field of filling and mining, can solve the problems of low utilization rate of low-quality solid waste and high cost of filling cementitious materials, so as to improve the top connection rate, reduce the cost of filling and mining, and improve the stability. Effect

Pending Publication Date: 2020-06-19
HEBEI IRON & STEEL GRP MINING +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the currently disclosed filling cementitious materials are mainly high-activity slag, and high-cost materials such as cement clinker, lime, and admixtures are used to prepare composite activators, and the potential activity of high-activity blast furnace slag is stimulated to prepare cement. The utilization rate of low-quality solid waste such as steel slag and industrial by-product gypsum is low, and the cost of filling cementitious materials is high

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  • Optimization method of all-solid-waste cementing material and mixed aggregate filling slurry
  • Optimization method of all-solid-waste cementing material and mixed aggregate filling slurry
  • Optimization method of all-solid-waste cementing material and mixed aggregate filling slurry

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Effect test

Embodiment 1

[0081] Example 1: An example of optimal design of the proportion of all-solid waste cementitious material and mixed filling slurry prepared by synergistic excitation of steel slag and desulfurized gypsum

[0082] 1. An optimized method for the preparation of all-solid waste cementitious materials by synergistic excitation of steel slag and desulfurized gypsum

[0083] (1) Steel slag-desulfurized gypsum synergistically stimulated preparation of all-solid waste cementitious material cemented filling body strength test

[0084] The solid waste materials are taken from a steel company in the south, and the particle size distribution curve of steel slag fine powder is shown in figure 1 , powder specific surface area 410m 2 / kg; slag powder particle size distribution curve see figure 2 , specific surface area 420m 2 / kg; the particle size distribution of desulfurized gypsum see image 3 , powder specific surface area 405m 2 / kg. The beneficiation tailings are taken from an ir...

Embodiment 2

[0140] Example 2: An example of optimal design of the proportion of all-solid waste cementitious material and mixed filling slurry prepared by synergistic excitation of steel slag-fluorine gypsum

[0141] 1. An optimized method for the preparation of all-solid waste cementitious materials by synergistic excitation of steel slag and fluorine gypsum

[0142] (1) Steel slag-fluorine gypsum synergistic excitation to prepare all-solid waste cementitious material cemented filling body strength test

[0143] The solid waste materials are taken from a steel company in the south, and the particle size distribution curve of steel slag fine powder is shown in figure 1 , the powder specific surface area is 405m 2 / kg; slag powder particle size distribution curve see figure 2 , the powder specific surface area is 425m 2 / kg; fluorine gypsum particle size distribution see Figure 4 , the powder specific surface area is 405m 2 / kg. The beneficiation tailings are taken from an iron min...

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Abstract

The invention discloses an optimization method of all-solid-waste cementing material and mixed aggregate filling slurry, and belongs to the technical field of filling mining. According to the method,the all-solid-waste filling cementing material is prepared through synergistic excitation of alkaline converter steel slag and industrial byproduct gypsum, and an all-solid-waste cementing material optimization model is established for proportion optimization by taking the cost of the cementing material as an optimization target and taking the strength and the volume expansion rate of a cemented filling body as constraint conditions. The invention further discloses an optimization method of the coarse and fine tailing mixed aggregate filling slurry by utilizing the all-solid-waste cementing material. The optimal design of the mixed aggregate filling slurry with the lowest filling cost is obtained by solving the optimal design model of the mixed filling slurry with the cost of the mixed filling slurry per unit volume as an optimization target and the strength and the volume expansion rate of the cemented filling body as constraint conditions. Solid wastes such as steel slag, industrialbyproduct gypsum and beneficiation tailings are applied to mining by a filling method, so that the filling mining cost is remarkably reduced, and the economic benefit and the environmental protectionbenefit of filling mining are improved.

Description

technical field [0001] The invention belongs to the technical field of filling and mining, and in particular relates to an optimization method for filling slurry of all-solid waste gelling materials and mixed aggregates. Background technique [0002] With the rapid development of our country's economy and the continuous development of resources, high-grade and good-condition resources are becoming increasingly exhausted, and we are faced with the mining of difficult ore bodies such as deep burial, high ground pressure, and rich water. The filling and filling mining method is the first choice to realize safe, environmental protection and green mining. At present, not only the proportion of non-ferrous gold and other precious metal mine filling methods is increasing year by year, but also gradually popularized in iron ore and coal mining. Filling mining has high cost and low economic benefit, and it is used in base metal and coal mines, facing the problem of economic benefit....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C60/00C04B28/14
CPCG16C60/00C04B28/144C04B18/141C04B18/142C04B18/12
Inventor 郭斌吴凡杨晓炳李茂辉路燕泽李胜辉陈彦亭高谦胡亚军涂光富杨楠曾莉
Owner HEBEI IRON & STEEL GRP MINING
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