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in the field of nickel-iron slag self-insulating autoclaved bricks and its preparation, can solve the problems of unpublished nickel-iron slag preparation of autoclaved bricks, achieve good frost resistance, improve quality, Good compressive strength effect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

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

Example Embodiment

[0059] Example 1

[0060] The weight ratio of the nickel-iron slag self-insulating autoclaved brick is:

[0061] 970 thousand tons of nickel iron slag

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

[0063] The preparation method is as follows:

[0064] 1) Dry the gypsum for later use;

[0065] 2) Weigh ferronickel slag and gypsum with a particle size of 1 mm, send them into a mixer, dry stirring, and then add water and stir until uniform, to prepare a mixture, the weight of which is 100,000 tons of water;

[0066] 5) Break up the mixture;

[0067] 6) The broken up mixture is aged and rolled to obtain a blank;

[0068] 7) Extruding the blank into a brick blank;

[0069] 8) The bricks are subjected to moisture discharge and steam conduction, and the bricks are initially cured; the bricks that have been cured at the initial stage are sent to the autoclave, and steam is passed through the pressure increasing process, pressure maintaining process, and pressure reducing process to perform th...

Example Embodiment

[0070] Example 2

[0071] The weight ratio of the nickel-iron slag self-insulating autoclaved brick is:

[0072] 880,000 tons of nickel iron slag

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

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

Example Embodiment

[0075] Example 3

[0076] The weight ratio of the nickel-iron slag self-insulating autoclaved brick is:

[0077] 506,000 tons of powdered nickel iron slag

[0078] 414,000 tons of granular nickel-iron slag

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

[0080] The preparation method is as follows:

[0081] 1) Preparation of granular nickel-iron slag:

[0082] a. After the nickel-iron slag is water-quenched, and then subjected to water-separation treatment, it is passed through a 3 mm sieve for the first time, and the sieve material with a particle size of less than 3 mm is collected;

[0083] b. Break the sieve on the first sieve, and pass the 3mm sieve for the second time to collect the off-screen material with a particle size of less than 3mm;

[0084] c. Mix the undersize material collected in step a with the undersize material collected in step b to obtain a total mixture of undersize materials, and collect the total mixture of undersize materials with a particle siz...

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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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