Method for preparing low-cost filling cementing material by compositely exciting multiple solid wastes

A gelling material and composite excitation technology, which is applied in the fields of computer material science, instrumentation, chemical process analysis/design, etc., can solve problems such as difficult to obtain the optimal formula of composite excitation agent, and achieve the effect of improving economic and social benefits

Pending Publication Date: 2020-08-07
UNIV OF SCI & TECH BEIJING +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disclosed activator materials and proportions are limited to specific purposes and conditions, and are not suitable for the development of multi-solid waste filling cementitious materials, and it is also difficult to obtain the optimized formula of different filling mine tailings composite activators

Method used

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  • Method for preparing low-cost filling cementing material by compositely exciting multiple solid wastes
  • Method for preparing low-cost filling cementing material by compositely exciting multiple solid wastes
  • Method for preparing low-cost filling cementing material by compositely exciting multiple solid wastes

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Effect test

preparation example Construction

[0058] Such as figure 1 As shown, the preparation method for preparing low-cost filling cementitious material according to the compound excitation multi-solid waste of the present invention comprises the following steps:

[0059] Step 101: Select the base activator and the base activator and the corresponding formula range, and quickly optimize respectively to obtain the optimized formula of the base activator and the base activator.

[0060] Based on available solid waste resources, use engineering experience to select a salt-based activator, carry out an orthogonal test of a salt-based activator under high temperature maintenance at a high temperature of 40°C and a humidity ≥ 95%, and use range analysis to formulate a salt-based activator optimization.

[0061] The salt-based activator is mainly a sulfate activator, and a small amount of alkali activator is added. Sulfate activators include industrial by-product gypsum, such as desulfurization gypsum, fluorine gypsum, phos...

Embodiment

[0079] 1. Rapid optimization of salt-based activator formula

[0080] (1) According to the types of solid waste resources that can be used, with the help of engineering experience or trial and error, select and determine the range of salt-based activators and formulas, and analyze the physical and chemical characteristics of solid waste resources and activators.

[0081] (2) Orthogonal design is carried out according to the formula range of the salt-based activator, and the 3d and 7d strength orthogonal tests of the cemented filling body are carried out under the curing at a high temperature of 40°C and a humidity ≥ 95%, and the test results of the strength and expansion rate of the filling body are obtained;

[0082] (3) According to the results of the orthogonal test of the strength of the cementitious filling body stimulated by the salt base, the salt-based activator formula for the 3d and 7d strength of the cemented filling body was quickly optimized by using the range anal...

Embodiment 1

[0102] Aiming at the whole tailings of Zhongguan Iron Mine, the rapid optimization and decision-making method of filling cementitious materials for Zhongguan Iron Mine stage and subsequent filling mining by compound excitation and multiple solid wastes includes the following steps:

[0103] 1. Rapid optimization of the formulation of salt-based stimulated gelling materials

[0104] For aggregates filled with tailings in Zhongguan Iron Mine, desulfurization gypsum was selected as the main activator based on experience, cement clinker was used as an auxiliary activator, and industrial Glauber's salt was added to stimulate the potential activity of slag fine powder. Experiments, thereby quickly obtaining the optimal formulation of the salt-based activator. figure 2 It is the particle size distribution curve of Handan Iron and Steel Slag Micropowder in the embodiment of the present invention, and its slag fineness is 5.27%; image 3 It is the particle size distribution curve of ...

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Abstract

The invention discloses a method for preparing a low-cost filling cementing material by compositely exciting multiple solid wastes, and belongs to the technical field of filling mining. The method comprises the following steps: selecting a salt-based excitant, a base excitant and corresponding formula ranges, and respectively and quickly optimizing to obtain optimized formulas of the salt-based excitant and the base excitant; obtaining the proportion of the composite excitant according to the optimized formula, and respectively establishing relation models of the strength and the volume expansion rate of the filling body of the filling cementing material and the cost of the filling cementing material and the proportion of the composite excitant; establishing a composite excitant proportionoptimization model based on the relation model and solving the model to obtain a composite excitant optimization formula; and preparing the low-cost cementing material according to the optimized formula of the composite excitant. According to the method, the optimal formula of the composite excitant can be rapidly obtained for complex multi-solid-waste resources, so that the prepared low-cost filling cementing material is utilized in filling mining, and remarkable economic benefits and environmental protection benefits can be obtained.

Description

technical field [0001] The invention relates to the technical field of filling and mining of various solid waste resources, in particular to a method for preparing a low-cost filling gel material by compounding multiple solid wastes. Background technique [0002] With the rapid development of my country's national economy and the continuous development of resources, high-grade and good-condition resources are becoming increasingly exhausted, and more and more deep-buried, high-stress and flood-difficult deposits are being mined. For safety, environmental protection and green mining and clean production, the filling and filling mining method is the first choice. The filling and filling mining method has complex mining process, low production capacity and high mining cost. Therefore, the development and utilization of low-cost and high-performance filling cementitious materials is the only way to improve the economic and environmental benefits of filling mining. [0003] In ...

Claims

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Application Information

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IPC IPC(8): G16C20/10G16C20/70G16C60/00
CPCG16C60/00G16C20/10G16C20/70
Inventor 吴凡温震江杨晓炳翟淑花李胜辉高谦尹升华巴蕾韦寒波胡亚军郭斌涂光富
Owner UNIV OF SCI & TECH BEIJING
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