Method for preparing autoclaved aerated concrete block by taking blast furnace slag-gold tailings as raw materials

A technology of concrete blocks and gold tailings, applied in ceramic products, climate sustainability, sustainable waste treatment, etc., can solve problems such as environmental impact, land occupation, safety hazards, etc., to increase porosity, reduce cracks, The effect of less surface cracks

Pending Publication Date: 2022-08-05
徐州市正峰锌业有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the gold tailings are piled up in the tailings pool, which not only takes up a lot of land, but also has a bad impact on the surrounding environment.
At the same time, the large stockpiling of gold tailings has also caused great safety hazards. With the continuous increase of the stock of gold tailings, it will eventually face the embarrassing situation of having no land to bury

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The blast furnace slag tailings, quicklime, cement, and gypsum are subjected to wind, sun, and rain for 1 to 36 months, and then mechanically ground to a uniform state. Grind to a uniform state, wherein the particle gradation distribution of blast furnace slag tailings is, 8 mesh: 15 mesh: 40 mesh: 150 mesh = 10: 18: 15: 45, and the particle gradation distribution of gold tailings is, 20 mesh: 60 mesh: 100 mesh: 275 mesh = 10: 25: 20: 35, the particle size of quicklime is 20 mesh, the particle size of gypsum is 40 mesh, and the particle size of aluminum powder is 40 mesh; in parts by mass, take 45 parts of blast furnace slag The tailings, 25 parts of gold tailings, 15 parts of quicklime, 3 parts of gypsum, and 10 parts of cement are put into a horizontal ball mill, wet-milled for 5-6 hours, add 0.5 parts of triethanolamine, stir evenly, and control the temperature of the slurry at 35-40 ℃ , add 1 part of aluminum powder, and stir for 10-30min to obtain a mixed slurry, w...

Embodiment 2

[0028] The blast furnace slag tailings, quicklime, cement, and gypsum are subjected to wind, sun, and rain for 1 to 36 months, and then mechanically ground to a uniform state. Grind to a uniform state, wherein the particle gradation distribution of blast furnace slag tailings is, 8 mesh: 15 mesh: 40 mesh: 150 mesh = 25: 20: 40: 23, and the particle gradation distribution of gold tailings is, 20 mesh: 60 mesh: 100 mesh: 275 mesh = 15: 10: 30: 20, the particle size of quicklime is 40 mesh, the particle size of gypsum is 200 mesh, and the particle size of aluminum powder is 200 mesh; in parts by mass, take 55 parts of blast furnace slag The tailings, 40 parts of gold tailings, 18 parts of quicklime, 7 parts of gypsum, and 15 parts of cement are put into a horizontal ball mill, wet-milled for 7-8 hours, add 2 parts of triethanolamine, stir evenly, and control the temperature of the slurry at 35-40 ℃ , add 1-3 parts of aluminum powder, and stir for 10-30min to obtain a mixed slurry...

Embodiment 3

[0031] The blast furnace slag tailings, quicklime, cement, and gypsum are subjected to wind, sun, and rain for 1 to 36 months, and then mechanically ground to a uniform state. Grind to a uniform state, wherein the particle gradation distribution of blast furnace slag tailings is, 8 mesh: 15 mesh: 40 mesh: 150 mesh = 15: 20: 30: 40, and the particle gradation distribution of gold tailings is, 20 mesh: 60 mesh: 100 mesh: 275 mesh = 15: 22: 25: 28, the particle size of quicklime is 30 mesh, the particle size of gypsum is 100 mesh, and the particle size of aluminum powder is 200 mesh; in parts by mass, take 50 parts of blast furnace slag The tailings, 30 parts of gold tailings, 16 parts of quicklime, 5 parts of gypsum, and 12 parts of cement are put into a horizontal ball mill, wet-milled for 7-8 hours, add 1.5 parts of triethanolamine, stir evenly, and control the temperature of the slurry at 35-40 ℃ , add 2 parts of aluminum powder, and stir for 10-30min to obtain a mixed slurry...

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Abstract

The invention relates to the technical field of autoclaved aerated concrete building blocks, in particular to a method for preparing autoclaved aerated concrete building blocks by taking blast furnace slag-gold tailings as raw materials, which comprises the following steps: aging, crushing, mixing, precuring and cutting, and carrying out aerated autoclaving on the raw materials to obtain concrete building blocks with high strength, no mold collapse, good heat insulation effect and few surface cracks. Compared with the prior art, the method has the advantages that the blast furnace slag and the gold tailings are used as main raw materials, harmless, reduction and resourceful treatment of the blast furnace slag and the gold tailings is realized, zero emission, total recovery and no secondary pollution in the whole process can be realized, and the method has better economic benefits and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of autoclaved aerated concrete blocks, in particular to a method for preparing autoclaved aerated concrete blocks by using blast furnace slag-gold tailings as raw materials. Background technique [0002] As an important part of wall material innovation and building energy saving, autoclaved aerated concrete block is an ideal wall material to replace clay bricks after years of application and practice. The advantages of concrete products, aerated concrete will be a new type of lightweight building material that has been vigorously developed in the past decade. At present, the application of autoclaved aerated concrete blocks in building systems is mainly divided into two categories: the first type is multi-layer mixed structure, which mainly takes advantage of the good thermal insulation performance of aerated concrete, and the horizontal load-bearing system of the original multi-storey building remains uncha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/02C04B103/30
CPCC04B28/04C04B38/02C04B2103/302C04B2201/20C04B2201/32C04B2201/50C04B22/143C04B18/141C04B18/12C04B22/064C04B2103/48C04B16/06C04B24/18C04B40/024C04B22/04Y02W30/91
Inventor 孟子霖张以河张茜孙文
Owner 徐州市正峰锌业有限公司
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