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Autoclaved brick prepared from sodium jarosite residue, and preparation method thereof

A technology of jarosite slag and autoclaved bricks, which is applied in the field of building materials, can solve problems such as land occupation, environmental pollution, and environmental threats, and achieve the effects of saving resources, wide sources, and good physical properties

Inactive Publication Date: 2017-11-17
广西建筑材料科学研究设计院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Jarosite slag is the acid leaching solution formed after the laterite nickel ore is treated with acid. When the iron ions in the acid leaching solution are removed, the waste slag is formed by precipitation. This kind of waste slag is piled up in large quantities, which not only occupies land, but also affects the environment. create a threat
Because jarosite is wrapped with heavy metal ions during the precipitation process, these heavy metal ions will dissolve in the natural environment and pollute the environment

Method used

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  • Autoclaved brick prepared from sodium jarosite residue, and preparation method thereof
  • Autoclaved brick prepared from sodium jarosite residue, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of an autoclaved brick made of jarosite slag, comprising the following steps:

[0034] S1: Airing or drying the jarosite slag until the moisture content is ≤20%;

[0035] S2: Grind tempered slag and wollastonite to <0.08mm respectively;

[0036] S3: Weigh the raw materials according to the following parts by weight: 300 parts of jarosite slag, 350 parts of cement, 100 parts of wollastonite, 8 parts of naphthalene-based water reducer, 8 parts of iron oxide red, and 30 parts of artificial sand;

[0037] S4: Put the measured jarosite slag, cement, wollastonite powder, and artificial sand into the wheel mill mixer for dry material rolling and mixing for 10 minutes;

[0038] S5: Add the measured naphthalene-based water reducer and red iron oxide into an appropriate amount of water and mix well, then add them to the wheel mill and roll and stir with the dry materials for 10 minutes to make the bricks form a semi-dry and wet brick with an appropriate degr...

Embodiment 2

[0043] A preparation method of an autoclaved brick made of jarosite slag, comprising the following steps:

[0044] S1: Airing or drying the jarosite slag until the moisture content is ≤20%;

[0045] S2: Grind tempered slag and wollastonite to <0.08mm respectively;

[0046] S3: Weigh the raw materials according to the following parts by weight: 800 parts of jarosite slag, 100 parts of cement, 190 parts of tempered slag, 10 parts of calcium lignosulfonate, 15 parts of iron oxide yellow, and 50 parts of natural sand;

[0047] S4: Put the measured jarosite slag, cement, tempered slag powder, and natural sand into the wheel mill mixer for dry material rolling and mixing for 15 minutes;

[0048] S5: Add the measured calcium lignosulfonate and iron oxide yellow into an appropriate amount of water and mix well, then add them to the wheel mill and roll and stir with the dry materials for 15 minutes to make the bricks form a semi-dry and wet brick with an appropriate degree of cohesion...

Embodiment 3

[0053] A preparation method of an autoclaved brick made of jarosite slag, comprising the following steps:

[0054] S1: Airing or drying the jarosite slag until the moisture content is ≤20%;

[0055] S2: Grind tempered slag and wollastonite to <0.08mm respectively;

[0056] S3: Weigh the raw materials according to the following parts by weight: 800 parts of jarosite slag, 350 parts of cement, 20 parts of polycarboxylate water reducing agent, 20 parts of iron oxide black, and 75 parts of artificial sand;

[0057] S4: Put the measured jarosite slag, cement, and artificial sand into the wheel-mill mixer for rolling and stirring for 15 minutes;

[0058] S5: Add the measured polycarboxylate water reducer and iron oxide black to an appropriate amount of water and mix well, then add them to the wheel mill and dry them together with the dry materials for rolling and stirring for 15 minutes to make the bricks form a proper degree of cohesion Semi-dry and wet uniform brick materials; ...

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Abstract

The present invention discloses an autoclaved brick prepared from sodium jarosite residue, and a preparation method thereof, wherein the raw materials comprise sodium jarosite residue, cement, tempering residue, wollastonite powder and an efficient water reducing agent. The preparation method comprises raw material drying, impurity removal, grinding, rolling, stirring, molding, autoclave curing and other steps. According to the present invention, the autoclaved brick contains a large amount of the sodium jarosite residue, the cement and other materials, can cure heavy metal ions, further has advantages of physical property, waste utilization, environmental protection and resource saving, and is the excellent-performance green building material.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a novel wall material, in particular to an autoclaved brick made from jarosite slag and a preparation method thereof. Background technique [0002] Wall materials play the role of enclosure, load-bearing, partition, and thermal insulation in buildings. In the development process of wall materials, solid clay bricks account for a large proportion of wall materials, but due to the small size of solid clay bricks, High apparent density, poor heat preservation, heat insulation, sound absorption, and decorative performance, low construction efficiency, and high energy consumption in the production of clay bricks, destroys resources, pollutes the environment, and can no longer meet the multifunctional requirements of modern buildings. In addition, in recent years, the innovation of wall materials in my country has been continuously increased and people have paid more and more attention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/00017C04B2111/00784C04B2201/50C04B18/142C04B14/043C04B24/226C04B14/308C04B14/06C04B40/024C04B24/18C04B2103/302
Inventor 江家齐黄可周任卫东和润秀陈霏况鑫
Owner 广西建筑材料科学研究设计院有限公司
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