A Design Method of Low-cost Composite Excited Filling Cementitious Material

A cementitious material and composite excitation technology, applied in design optimization/simulation, computer-aided design, calculation, etc., can solve the problem of difficulty in obtaining the optimal formula of mine tailings composite excitation agent, and achieve significant benefits and environmental protection benefits. The effect of large quantity and shortened test time

Active Publication Date: 2022-04-26
HEBEI IRON & STEEL GRP MINING +1
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  • Abstract
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  • Claims
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Problems solved by technology

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

Method used

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  • A Design Method of Low-cost Composite Excited Filling Cementitious Material
  • A Design Method of Low-cost Composite Excited Filling Cementitious Material
  • A Design Method of Low-cost Composite Excited Filling Cementitious Material

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Embodiment approach

[0037] The design method of this low-cost compound excitation filling cementitious material adopts high temperature curing to quickly obtain the optimized formula of the base activator and the base activator; Strength test; on this basis, the compound activator optimization model is established to optimize the ratio; finally, the strength verification test of the cemented filling body is carried out and the economic analysis of the filling cementitious material is carried out. Its embodiment specifically comprises the following steps:

[0038] 1. Formulation design of salt-based activator

[0039] (1) According to the available salt-based activator materials, determine that the salt activator is industrial by-product gypsum, preferably desulfurized gypsum; the moisture content of sulfate activator powder is 3 Content>38wt%, powder fineness<15%;

[0040] (2) The ratio of salt-based activator is: 13-17wt% of salt-based activator, 2-6wt% of alkali activator, 0-1.0wt% of industri...

Embodiment 1

[0065] Aiming at the whole tailings of an iron mine in Hebei, the design method of low-cost filling cementitious material for the subsequent filling method mining of an iron mine in Hebei prepared by composite excitation includes the following steps:

[0066] 1. Formulation design of salt-based activator

[0067] Aiming at filling the aggregate with tailings in an iron mine in Hebei Province, desulfurization gypsum was selected as the main activator, cement clinker was used as the auxiliary activator, and industrial Glauber's salt was added as an early strength agent to stimulate the potential activity of slag micropowder.

[0068] The fineness of the present embodiment slag micropowder is 4.27%, and its particle size distribution curve is as follows figure 1 Shown; the moisture content of desulfurized gypsum powder is 9.5wt%, SO 3 The content is 39.5wt%, the powder fineness is 9.2%, and its particle size distribution curve is as follows figure 2 Shown; cement clinker powd...

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Abstract

The invention discloses a design method of a low-cost composite excitation filling gel material, which belongs to the technical field of filling and mining. This method adopts high temperature curing, carries out the orthogonal test of the strength of the cemented filling body, and quickly obtains the optimized formula of the base activator and the base activator; then carries out the orthogonal design of the compound activator ratio and the strength test of the cemented filling body; according to the test results, By establishing and solving the optimal design model of the composite activator ratio, the optimized formula of the composite activator can be obtained, and thus the low-cost composite activator filling gel material can be prepared. According to the physical and chemical characteristics of different solid wastes, this design method can quickly obtain the optimized formula of activator for low-cost filling cementitious materials, and thus prepare low-cost filling cementitious materials suitable for different tailings aggregates and strength requirements. Solid waste lays the foundation for large-scale and high value-added resource utilization in filling mining.

Description

technical field [0001] The invention belongs to the technical field of filling and mining, and in particular relates to a design method of low-cost compound excitation filling gelling material. 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 increasingly depleted, and more difficult-to-mine ore bodies such as deep burial, high ground pressure, and rich water are faced with mining. For safety, environmental protection and green mining, 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 the past 10 years, people have been explo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/04G06F119/18G06F17/18C04B7/21C04B7/17
CPCG06F17/18C04B7/21C04B7/17Y02P40/10
Inventor 郭斌路燕泽温震江李胜辉吴凡杨晓炳尹升华高谦胡亚军涂光富
Owner HEBEI IRON & STEEL GRP MINING
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