Reconstructed chromium slag powder for radiation-proof mortar and concrete, and preparation method and application thereof

A concrete and anti-radiation technology, which is applied in the field of building concrete materials, can solve the problems of consuming natural resources, unsuitable radioactive shielding, and high cost of aggregates, and achieve the effect of protecting environmental resources, improving structural strength and compactness, and the method is simple and easy to implement

Active Publication Date: 2018-08-24
ZHENGZHOU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, high-density natural aggregates such as barite, zeolite, and iron ore are mostly used for radioactive shielding. The main problem is that the cost of these aggregates is high, and they consume too much natural resources, and are not suitable for large-scale application in radioactive shielding.

Method used

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  • Reconstructed chromium slag powder for radiation-proof mortar and concrete, and preparation method and application thereof
  • Reconstructed chromium slag powder for radiation-proof mortar and concrete, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The raw material composition of the weight percentage of reconstituted chromium slag powder: 38% of chromium slag powder, 61% of molten slag, and 1% of catalytic fluxing component. The weight percent composition of the catalytic fluxing component is: 40% of red mud and 60% of vanadium slag.

[0031] The following steps are used to prepare the reconstituted chromium slag powder: 1) The chromium slag is first pulverized and then ground until the sieve residue of 80 μm is 18% to obtain chromium slag powder (the percentage content of Cr element oxide is 10%), and the ingredients are formulated according to the above ratio: chromium Slag powder 38%, molten slag 61%, catalytic fluxing component 1%.

[0032] 2) Wet chromium slag powder into balls with a moisture content of 10% and a diameter range of 5 to 10mm, and then dry them to a moisture content of 3% to form chromium slag powder balls for later use;

[0033] 3) Add chromium slag powder balls and catalytic flux component...

Embodiment 2

[0037] The raw material composition of the weight percentage of reconstituted chromium slag powder: 45% of chromium slag powder, 53% of molten slag, and 2% of catalytic fluxing component. The weight percent composition of the catalytic fluxing component is: 50% of red mud and 50% of vanadium slag.

[0038] The following steps are used to prepare the reconstituted chromium slag powder: 1) The chromium slag is first pulverized and then ground until the sieve residue of 80 μm is 15% to obtain chromium slag powder (the percentage content of Cr element oxide is 6%), and the ingredients are formulated according to the above ratio: chromium Slag powder 45%, molten slag 53%, catalytic fluxing component 2%.

[0039] 2) Wet chromium slag powder into balls with a moisture content of 8% and a diameter range of 10-20mm, and after balling, dry to a moisture content of 3% to form chromium slag powder balls for later use;

[0040] 3) Add chromium slag powder balls and catalytic flux componen...

Embodiment 3

[0044] The raw material composition of the reconstituted chromium slag powder in weight percentage: 50% of chromium slag powder, 47% of molten slag, and 3% of catalytic fluxing component. The weight percent composition of the catalytic fluxing components is as follows: 80% of red mud and 20% of vanadium slag.

[0045] The following steps are used to prepare the reconstituted chromium slag powder: 1) The chromium slag is first pulverized and then ground until the sieve residue of 80 μm is 20% to obtain chromium slag powder (the percentage content of Cr element oxide is 3%), and the ingredients are formulated according to the above ratio: chromium Slag powder 50%, molten slag 47%, catalytic fluxing component 3%.

[0046] 2) Wet chrome slag powder into balls with a moisture content of 10% and a diameter range of 10-15mm, and then dry them to a moisture content of 2% to form chromium slag powder balls for later use;

[0047] 3) Add chromium slag powder balls and catalytic flux co...

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Abstract

The invention belongs to the technical field of building concrete materials, and particularly relates to a reconstructed chromium slag powder used for radiation-proof mortar and concrete, and a preparation method and an application thereof. The reconstructed chromium slag powder is prepared from certain amounts of chromium slag powder, molten slag and a catalytic fluxing component by melting, water quenching, drying and crushing. The reconstructed chromium slag powder prepared in the invention can be used as an admixture in the mortar and concrete to improve the radiation resistance of the mortar and concrete, has good active characteristics, and has no untoward influences on other basic performances of the mortar and concrete after being mixed, and all indicators of the obtained concretemeet the requirements of national standards.

Description

technical field [0001] The invention belongs to the technical field of building concrete materials, and in particular relates to a reconstituted chromium slag powder for radiation-proof concrete and its preparation and application. Background technique [0002] When nuclear radiation acts on the human body, it can cause human cells to become cancerous, teratogenic or even die in different ways. Therefore, reasonable setting of shielding layer is a necessary means to protect animals and plants from the threat of nuclear radiation. Common radiation shielding materials include lead plates, radiation-proof glass, and radiation-proof concrete. The anti-radiation concrete has been widely used because of its cost advantage, and is suitable for nuclear power plants and so on. [0003] At present, the research on the application of anti-radiation concrete mainly includes admixtures and heavy aggregates. With the increasing scarcity of natural resources such as barite, some industria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/02C04B28/02
CPCC04B18/026C04B28/02C04B2111/00862C04B2201/50C04B18/144C04B18/141C04B18/0409C04B14/02C04B14/06
Inventor 罗忠涛程站起白召军张茂亮张海涛赵军张美香王振华
Owner ZHENGZHOU UNIV
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