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Preparation of non-fired lightweight ceramsite from magnesite waste rock and its preparation method

A light-weight ceramsite and magnesite technology, applied in ceramic products, other household appliances, household appliances, etc., can solve the problem of undiscovered research data of non-fired ceramsite, achieve resource utilization and increase specific surface area , the effect of reducing the bulk density

Active Publication Date: 2021-12-17
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the preparation of non-fired ceramsite uses municipal sludge, red mud, fly ash, cement and other raw materials, and uses magnesite waste rock, azurite tailings, iron tailings, diamond tailings and other raw materials to prepare The research data of unfired ceramsite has not been found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example provides a kind of magnesite waste rock to prepare non-fired lightweight ceramsite, which is mainly prepared from the following raw materials in mass percentage: 20% iron tailings, 30% diamond tailings, 25% light-burned magnesite Waste rock powder, 20% magnesium chloride hexahydrate, 5% azurite tailings.

[0028] A kind of magnesite waste rock preparation non-fired lightweight ceramsite and its preparation method, comprising the following steps:

[0029] (1) Send 20% iron tailings, 30% diamond tailings, and 5% azurite tailings into the high-pressure suspension roller mill for grinding, and the particle size of the materials meets -0.045mm, accounting for more than 95%, and the mixed raw materials are obtained Powder;

[0030] (2) Crushing waste magnesite rocks through a four-toothed roller crusher, controlling the particle size range to 1 cm to 2 cm, and obtaining waste magnesite rocks in the form of blocks;

[0031] (3) Send the massive raw material of m...

Embodiment 2

[0038] This example provides a kind of magnesite waste rock to prepare non-fired lightweight ceramsite, which is mainly prepared from the following raw materials in mass percentage: 25% iron tailings, 25% diamond tailings, 27% light-burned magnesite Waste rock powder, 15% magnesium chloride hexahydrate, 8% azurite tailings.

[0039] A kind of magnesite waste rock preparation non-fired lightweight ceramsite and its preparation method, comprising the following steps:

[0040] (1) Send 25% iron tailings, 25% diamond tailings, and 8% azurite tailings into the high-pressure suspension roller mill for grinding, and the particle size of the materials meets -0.045mm, accounting for more than 95%, and the mixed raw materials are obtained Powder;

[0041] (2) Crushing waste magnesite rocks through a four-toothed roller crusher, controlling the particle size range to 1 cm to 2 cm, and obtaining waste magnesite rocks in the form of blocks;

[0042] (3) Sending the bulk raw material of m...

Embodiment 3

[0049] This example provides a kind of magnesite waste rock to prepare non-fired lightweight ceramsite, which is mainly prepared from the following raw materials in mass percentage: 30% iron tailings, 20% diamond tailings, 30% light-burned magnesite Waste rock powder, 10% magnesium chloride hexahydrate, 10% azurite tailings.

[0050] A kind of magnesite waste rock preparation non-fired lightweight ceramsite and its preparation method, comprising the following steps:

[0051](1) Send 30% iron tailings, 20% diamond tailings, and 10% azurite tailings into the high-pressure suspension roller mill for grinding, and the particle size of the materials meets -0.045mm, accounting for more than 95%, and the mixed raw materials are obtained Powder;

[0052] (2) Crushing waste magnesite rocks through a four-toothed roller crusher, controlling the particle size range to 1 cm to 2 cm, and obtaining waste magnesite rocks in the form of blocks;

[0053] (3) Send the massive raw material of ...

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Abstract

The invention provides a kind of magnesite waste rock for preparing non-burning light ceramsite, which is mainly prepared from the following raw materials by mass percentage: 20%-30% iron tailings, 20%-30% diamond tailings, 25% ~30% light burning magnesite waste rock powder, 10% ~ 20% magnesium chloride hexahydrate, 5% ~ 10% azurite tailings. The ceramsite prepared by the method has a porous structure on the surface, a large specific surface area and a low bulk density, and at the same time, a large amount of bulk solids such as iron tailings, diamond tailings, magnesite waste rock, azurite tailings and the like are used in large quantities. waste, the tailings utilization rate reaches more than 80%, which not only solves the problem that tailings storage occupies a large amount of land, but also reduces the pollution of mine dust to the environment, realizes the resource utilization of mine waste, and has good social benefits, Economic and ecological benefits.

Description

technical field [0001] The invention relates to the field of solid waste utilization and environmental protection, in particular to an unfired lightweight ceramsite prepared from magnesite waste rock and a preparation method thereof. Background technique [0002] China is rich in magnesite resources. As one of the three major refractory raw materials, magnesite has supported the rapid development of China's refractory materials in the past ten years. However, with the rapid development of my country's national economy, its mineral resources have also entered a period of rapid consumption. , the high-quality mineral resources are sharply reduced. The massive accumulation of low-grade ore and tailings slag not only caused a serious waste of resources, but also caused damage to the local environment. During the rainy season, there are safety hazards such as landslides and mudslides in the mountainous tailings, which pose a huge threat to the lives and properties of villagers in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B28/30
CPCC04B38/009C04B28/30C04B18/12C04B40/024
Inventor 庞鹤高飞刘立勋王酉宁
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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