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A kind of preparation method of grouting filling material

A filling material and grouting technology, applied in the field of preparation of grouting filling material, can solve the problems of high waste transportation cost and different sources, and achieve the effect of solving the problem of large area, low cost and large processing capacity

Active Publication Date: 2021-01-15
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 106278070 A discloses a new type of grouting filling material, which is made of raw materials with the following weight distribution ratio: 5-95 parts of slag, 0-95 parts of red mud, 0-95 parts of calcium carbide slag, and the utilization of solid waste slag However, the above-mentioned raw materials are mainly waste materials with similar components to cement, and the sources are different, so the transportation cost of waste materials is relatively high

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a method for preparing a grouting filling material, the method comprising the following steps:

[0043] 50 parts by weight of alkali slag, 35 parts by weight of fly ash, 35 parts by weight of bauxite flotation slag and 10 parts by weight of sodium silicate and water are wet mixed under stirring conditions, and the solid-to-liquid weight ratio of solid raw materials to water The mixing temperature is 5:8, the mixing temperature is 30°C, and then aging for 8 hours, solid-liquid separation to obtain a grouting filling material with a water content of 30wt%, and the obtained liquid phase is returned for wet mixing.

[0044] In this embodiment, after the obtained grouting filling material is solidified, the strength can reach 1.4 MPa.

Embodiment 2

[0046] This embodiment provides a method for preparing a grouting filling material, the method comprising the following steps:

[0047] 70 parts by weight of alkali slag, 20 parts by weight of fly ash, 25 parts by weight of bauxite flotation slag and 5 parts by weight of sodium silicate are mixed with water under stirring conditions, and the solid-to-liquid weight ratio of solid raw materials to water The ratio is 1:1, the mixing temperature is 40°C, and then aged for 4 hours, solid-liquid separation to obtain a grouting filling material with a water content of 20wt%, and the obtained liquid phase is returned for wet mixing.

[0048] In this embodiment, after the obtained grouting filling material is solidified, the strength can reach 1.2 MPa.

Embodiment 3

[0050] This embodiment provides a method for preparing a grouting filling material, the method comprising the following steps:

[0051] 25 parts by weight of alkali slag, 50 parts by weight of fly ash, 30 parts by weight of bauxite flotation slag and 15 parts by weight of polyacrylamide and water are wet mixed under stirring conditions, and the solid-to-liquid weight ratio of solid raw materials to water The ratio is 3:8, the mixing temperature is 20°C, and then aged for 16 hours, solid-liquid separation to obtain a grouting filling material with a water content of 40wt%, and the obtained liquid phase is returned for wet mixing.

[0052] In this embodiment, after the obtained grouting filling material is solidified, the strength can reach 1.25 MPa.

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Abstract

The invention provides a preparation method of a grouting filling material, and the preparation method comprises: alkali slag, fly ash, bauxite flotation slag and an additive are subjected to wet mixing, aging treatment is carried out, and solid-liquid separation is carried out to obtain the grouting filling material. According to the method disclosed by the invention, two waste residues of the alkali slag and the fly ash of an ammonia method alkali production plant are used as raw materials, the bauxite flotation slag is used as an auxiliary material, and the additive is added, so that the grouting filling material is simply and quickly prepared, the utilization of the solid waste is realized, the problems of waste material accumulation and dust pollution are solved, the manufacturing cost is reduced, the obtained material is short in condensation time and high in strength, the strength can reach more than 1.2 mpa, and the comprehensive utilization of the waste of the alkali plant andthe discharge of a bauxite flotation enterprise is realized.

Description

technical field [0001] The invention belongs to the technical field of solid waste utilization, and relates to a preparation method of a grouting filling material. Background technique [0002] Soda slag and fly ash are two main solid wastes produced by soda plants. During the production of soda ash by the ammonia-soda method, the amount of waste liquid and slag discharged per ton of alkali produced is about 9-11m 3 , the solid content of which is about 300-600kg, and a large amount of waste liquid is accumulated all year round, which not only takes up a lot of land, but also pollutes the environment. Due to the high water content of spent alkali slag, the solid-to-surface ratio of the slag body is large, which brings many difficulties to its comprehensive utilization. In order to make better use of these solid wastes, it is first necessary to understand their main components in order to improve their utilization. [0003] The main components of soda slag are lime milk pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B111/70
Inventor 郑文婧惠建斌
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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