Method of producing haydite for thermal insulation block by utilizing steel slag quenched with wind

A technology of thermal insulation block and wind quenching, which is applied in the field of metallurgical slag treatment and resource utilization, can solve problems such as steel slag polluting the environment, and achieve the effects of preventing environmental pollution, reducing production costs, and being beneficial to the construction of ecological civilization.

Active Publication Date: 2015-05-13
宝武环科武汉金属资源有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for producing ceramsite for thermal insulation blocks by using wind-quenched steel slag. The hollow blocks produced by this method have properties such as thermal insulation, shock resistance, frost resistance, and fire resistance, and solve the problems caused by the accumulation of steel slag at present. The problem of environmental pollution increases the added value of steel slag utilization. At the same time, the production method is simple, energy-saving and environmentally friendly, and low in cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for producing ceramsite for thermal insulation bricklaying by using air-quenched steel slag. The specific processing process of the method is as follows:

[0029] 1) Weigh the raw materials by mass: 60 parts of air-quenched steel slag tailings, 12 parts of sodium bentonite, 25 parts of blast furnace slag powder, 2 parts of papermaking waste liquid residue, 1 part of alumina powder; of which, the air-quenched steel slag tailings are The tailings of wind-quenched steel slag after magnetic separation has a metal iron content of less than 1% and an average particle size of 3.5mm.

[0030] 2) Mix and grind the raw materials into a 150 mesh powder in a grinder, stir in a mixer for 15 minutes, weigh and add 10 parts of water after uniformity, and mix and stir in the mixer for another 20 minutes at a stirring speed of 250r / min. mixture;

[0031] 3) Then pelletize on a high-pressure counter-roller ball press to obtain spherical granular raw material with a particle size of 5m...

Embodiment 2

[0037] A method for producing ceramsite for thermal insulation bricklaying by using air-quenched steel slag. The specific processing process of the method is as follows:

[0038] 1) Weigh the raw materials by mass: 65 parts of wind-quenched steel slag tailings, 15 parts of sodium-based bentonite, 16 parts of cement, 2 parts of papermaking waste liquid residue, 2 parts of alumina powder; of which, the wind-quenched steel slag tailings are wind quenched The tailings of steel slag after magnetic separation have a metal iron content of less than 1% and an average particle size of 4.0mm.

[0039] 2) Mix the raw materials in a grinder into a 150 mesh powder, then stir in a mixer for 18 minutes, weigh 9 parts of water and add it, mix and stir in the mixer for another 22 minutes at a stirring speed of 200r / min, and mix to obtain a mixture;

[0040] 3) Then pelletize on a high-pressure counter-roller ball press to obtain spherical granular raw material with a particle size of 10mm;

[0041] 4)...

Embodiment 3

[0046] A method for producing ceramsite for thermal insulation bricklaying by using air-quenched steel slag. The specific processing process of the method is as follows:

[0047] 1) Weigh the raw materials by mass: 70 parts of wind-quenched steel slag tailings, 14 parts of sodium bentonite, 12 parts of binders, 2 parts of vegetable cellulose, 2 parts of alumina powder; among them, the wind-quenched steel slag tailings is wind The tailings of the quenched steel slag after magnetic separation, the metal iron content is less than 1%, and the average particle size is 1.50~4.75mm; the binder is a mixture of 50wt% blast furnace slag powder and 50wt% Portland cement;

[0048] 2) Mix and grind into 150 mesh powder in a grinder, then stir in a mixer for 15 minutes, weigh and add 10 parts of water after uniformity, mix and stir in the mixer for another 18 minutes at a stirring speed of 200r / min, and mix to obtain a mixture;

[0049] 3) Then pelletize on a high-pressure counter-roller ball pres...

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PUM

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Abstract

The invention discloses a method of producing haydite for a thermal insulation block by utilizing steel slag quenched with wind. The method comprises the following steps: 1) weighing raw materials according to mass weight; 2) grinding the raw materials in a grinder into powder in a mixing mode, stirring in a stirrer, adding water, and continuously stirring in the stirrer; 3) then pelletizing on a high-pressure twinroller machine to obtain a spherical granular raw meal; 4) enabling the obtained spherical raw meal to enter a drying system, raising the temperature of a pellet, and then drying; 5) underfiring by a rotary kiln; and 6) finally, roasting at a high temperature, and cooling to obtain steel slag haydite. According to the method disclosed by the invention, the produced hollow block has the performances of thermal insulation, seismic resistance, freezing resistance, fire resistance and the like and is also capable of solving the problem that the steel slag piles up to pollute the environment at present and increasing the added value of steel slag utilization. Meanwhile, the method is simple in process and low in cost, is environmentally friendly and saves the energy.

Description

Technical field [0001] The invention belongs to the technical field of metallurgical slag treatment and resource utilization, and specifically refers to a method for producing ceramsite for thermal insulation blocks by using air-quenched steel slag. Background technique [0002] In recent years, ceramsite, as a new type of building materials industry, has developed vigorously. This is mainly manifested as: ①The raw materials used have broken through the gravel (artificial sand or river sand), and industrial wastes such as fly ash, cinder ash, construction waste, blast furnace slag, and metallurgical tailings have been gradually developed; ②The preparation method has also appeared There are many types of sintered, high-temperature thermal expansion and non-fired types; ③The application fields range from the initial block and lightweight aggregate concrete to the sewage treatment filter material, soilless cultivation, greening, permeable concrete and many other fields. Ceramsite h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/138
CPCY02P40/60
Inventor 李灿华华洲连刘思李晖焦立新李亚光
Owner 宝武环科武汉金属资源有限责任公司
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