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Nickel-iron slag self-insulating autoclaved brick and preparation method thereof

A technology of nickel-iron slag and autoclaved bricks, which is applied in the field of nickel-iron slag self-insulating autoclaved bricks and its preparation, can solve the problems of unpublished nickel-iron slag preparation of autoclaved bricks, achieve good frost resistance, improve quality, Good compressive strength effect

Active Publication Date: 2016-02-10
SHANDONG WEIYE NEW BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because ferronickel slag occupies a significant proportion in solid waste slag, the main application of ferronickel slag is to prepare flux disclosed in CN102294556 at present, but how to make full use of ferronickel slag at present, turn waste into wealth, is the industry field and the prior art does not disclose the report that ferronickel slag is used to prepare autoclaved bricks

Method used

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  • Nickel-iron slag self-insulating autoclaved brick and preparation method thereof
  • Nickel-iron slag self-insulating autoclaved brick and preparation method thereof
  • Nickel-iron slag self-insulating autoclaved brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The weight ratio of ferronickel slag self-insulating autoclaved brick is:

[0061] 970,000 tons of ferronickel slag

[0062] Calcium material: 30,000 tons of gypsum

[0063] The preparation method is as follows:

[0064] 1) dry the gypsum and set aside;

[0065] 2) Take ferronickel slag and gypsum with a particle size of 1 mm, put them into a blender, dry stir, then add water and stir until uniform to obtain a mixture, and the weight of adding water is 100,000 tons;

[0066] 5) Break up the mixture;

[0067] 6) The mixed material after breaking up is aged and wheel-milled to obtain a billet;

[0068] 7) Extruding the billet to make brick adobe;

[0069] 8) The adobe is subjected to moisture removal and steam conduction, and the adobe is initially maintained; the adobe that has been cured in the initial stage is sent into an autoclave, and steam is introduced, and the adobe is subjected to a process of increasing pressure, maintaining pressure, and reducing pressure...

Embodiment 2

[0071] The weight ratio of ferronickel slag self-insulating autoclaved brick is:

[0072] 880,000 tons of ferronickel slag

[0073] Calcareous material: 150,000 tons of carbide slag

[0074] Preparation method: 136 million autoclaved bricks were prepared according to the method of Example 1.

Embodiment 3

[0076] The weight ratio of ferronickel slag self-insulating autoclaved brick is:

[0077] 506,000 tons of powdered ferronickel slag

[0078] 414,000 tons of granular ferronickel slag

[0079] Calcareous materials: 61,000 tons of carbide slag

[0080] The preparation method is as follows:

[0081] 1) Preparation of granular ferronickel slag:

[0082] a. carry out water quenching to ferronickel slag, after carrying out water analysis treatment again, pass 3 millimeter sieves for the first time, collect the sieve material with particle diameter less than 3 millimeters;

[0083] b. Break the sieve material that was sieved for the first time, pass through a 3 mm sieve for the second time, and collect the undersize material with a particle size less than 3 mm;

[0084] c. the undersize collected in step a is mixed with the undersize collected in step b to obtain a total mixture of undersize, and the collection particle size is the total mixture of undersize of 0.3-3 mm to obtain...

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Abstract

The invention relates to a nickel-iron slag self-heat preservation autoclaved brick and a preparation method for the same. The nickel-iron slag self-heat preservation autoclaved brick comprises nickel-iron slag and a calcium material, wherein the calcium material is preferably carbide slag; the nickel-iron slag comprises powdery nickel-iron slag and granular nickel-iron slag. The nickel-iron slag self-heat preservation autoclaved brick has a low heat transfer coefficient, strong compressive strength and high freezing resistance; the strength grade can reach MU30; the appearance quality and dimensional deviation of the nickel-iron slag self-heat preservation autoclaved brick are consistent with standards; the surface of the self-heat preservation autoclaved brick is detected to be free of bubbling, stripping and cracks by virtue of weather resistance tests; in addition, the aims of treating wastes with wastes and turning the wastes into wealth can be fulfilled, pollution caused by the nickel-iron slag can be reduced, and the ecological environment can be optimized; high added value can be obtained with low cost, so that the self-heat preservation autoclaved brick has great economic and social benefits.

Description

technical field [0001] The invention belongs to the field of green wall materials, in particular to a ferronickel slag self-insulating autoclaved brick and a preparation method thereof. Background technique [0002] With the continuous development of the level of industrialization, the discharge of industrial solid waste has also increased sharply. According to survey statistics, the national industrial solid waste generated in 2010 reached 2.41 billion tons; Ash, lime, cement, etc. have reached 6 tons; most of these solid wastes were piled up and discarded by enterprises in the past, and enterprises have to requisition a large amount of land every year to accumulate these solid wastes, wasting land resources; Serious pollution; therefore, enterprises have to invest huge funds every year to solve or alleviate these disadvantages; with the shortage of natural resources and environmental problems becoming more and more prominent, the comprehensive utilization of resources has ...

Claims

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Application Information

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IPC IPC(8): C04B28/08
Inventor 薄其珉花建华王峰周良张建军
Owner SHANDONG WEIYE NEW BUILDING MATERIAL
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