Preparation method for regenerated chromium and zirconium corundum brick

The technology of zirconium corundum brick and high chrome brick is applied in the field of preparation of recycled chromium zirconium corundum brick, which can solve the problems of occupying land resources and environmental pollution, and achieve the effects of saving land resources, avoiding environmental pollution and low cost.

Inactive Publication Date: 2014-04-16
JINZHOU YINGMING REFRACTORY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is a method for preparing regenerated chromium-zirconium corundum bricks with aluminum-chrome slag and discarded high-chrome bricks with low production cost and stable product quality, so as to solve the land occupation of high-chromium bricks and aluminum-chromium slag accumulation storage resource and environmental pollution

Method used

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  • Preparation method for regenerated chromium and zirconium corundum brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Raw material preparation

[0029] Take Cr 2 o 3 ≥10wt%, Al 2 o 3 ≥75wt% aluminum chromium slag, the industrial waste slag produced by thermite production of metal chromium, is crushed and sieved into aluminum chromium slag particles with a particle size of 0-1mm, 1-3mm, and 3-5mm;

[0030] Take Cr 2 o 3 ≥10wt%, Al 2 o 3 ≥75wt% aluminum-chromium slag, the industrial waste slag produced by thermite production of metal chromium, is crushed into aluminum-chromium slag powder with a particle size of ≤0.088mm;

[0031] Take Cr 2 o 3 ≥80wt%, ZrO 2 ≥3wt%, Al 2 o 3 ≥5wt%, TiO 2 ≥1wt% Texaco coal gasifier refractory lining used waste high chromium bricks, remove the slag impregnated layer, and crush into waste high chromium brick powder with a particle size of ≤0.088mm;

[0032] 2. Brick body forming

[0033] Mix 10kg of aluminum chromium slag particles with a particle size of 0~1mm, 30kg of aluminum chromium slag particles of 1mm~3mm, 30kg of aluminum chromium ...

Embodiment 2

[0037] 1. Raw material preparation

[0038] Take Cr 2 o 3 ≥10wt%, Al 2 o 3 ≥75wt% aluminum chromium slag, the industrial waste slag produced by thermite production of metal chromium, is crushed and sieved into aluminum chromium slag particles with a particle size of 0-1mm, 1-3mm, and 3-5mm;

[0039] Take Al 2 o 3 ≥90wt% brown corundum, crushed and sieved into brown corundum particles with a particle size of 0-1mm, 1-3mm, and 3-5mm;

[0040] Take Cr 2 o 3 ≥80wt%, ZrO 2 ≥3 wt%, Al 2 o 3 ≥5wt%, TiO 2 ≥1wt% Texaco coal gasifier refractory lining used waste high chromium bricks, remove the slag impregnated layer, and crush into waste high chromium brick powder with a particle size of ≤0.088mm;

[0041] Take zirconia and pulverize it into zirconia powder with particle size ≤0.088mm;

[0042] 2. Brick body forming

[0043] 10kg of aluminum chromium slag particles with a particle size of 0~1mm, 45kg of aluminum chromium slag particles with a particle size of 1mm~3mm, 20k...

Embodiment 3

[0047] 1. Raw material preparation

[0048] Take Al 2 o 3 ≥90wt% brown corundum, crushed and sieved into brown corundum particles with a particle size of 0-1mm, 1-3mm, and 3-5mm;

[0049] Take Cr 2 o 3 ≥10wt%, Al 2 o 3≥75wt% aluminum-chromium slag, the industrial waste slag produced by thermite production of metal chromium, is crushed into aluminum-chromium slag powder with a particle size of ≤0.088mm;

[0050] Take Cr 2 o 3 ≥80wt%, ZrO 2 ≥3 wt%, Al 2 o 3 ≥5wt%, TiO 2 ≥1wt% Texaco coal gasifier refractory lining used waste high chromium bricks, remove the slag impregnated layer, and crush into waste high chromium brick powder with a particle size of ≤0.088mm;

[0051] Take zirconia and pulverize it into zirconia powder with particle size ≤0.088mm;

[0052] 2. Brick body forming

[0053] 10kg of brown corundum particles with a particle size of 0-1mm, 30kg of brown corundum particles with a particle size of 1mm-3mm, 30kg of brown corundum particles with a particle ...

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Abstract

The invention discloses a preparation method for a regenerated chromium and zirconium corundum brick, which comprises the following steps of: smashing and screening at least one of aluminium and chromium slag and brown aluminium oxide into a particle A of which the granularity is 0-1mm, 1-3mm and 3-5mm; respectively smashing the aluminium and chromium slag, waste high-chromium bricks and zirconium oxide powder into aluminium and chromium slag powder material, waste high-chromium brick powder material and zirconium oxide powder material of which the granularity is less than or equal to 0.088mm; in parts by weight, mixing 70 parts of particle A, 5-30 parts of waste high-chromium brick powder material, 0-25 parts of aluminium and chromium slag powder material, 0-10 parts of zirconium oxide powder material; adding 6-10 parts of binding agent; carrying out mixed rolling; pressing to form; and drying, and sintering to obtain the regenerated chromium and zirconium corundum brick. The regenerated chromium and zirconium corundum brick has the advantages of low cost and stable product quality, the land resource occupied by waste material accumulation is saved, the environment pollution is avoided, and the binding strength, the abrasion performance and the anti-erosion capability of the regenerated chromium and zirconium corundum brick can be improved.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to a method for preparing regenerated chromium-zirconium corundum bricks. Background technique [0002] With the advancement of my country's industrialization process, the high-temperature industry is also developing rapidly. Therefore, the demand for refractory materials is increasing. Adding zirconia and chromium oxide green to refractory bricks can increase the bulk density of refractory bricks, improve the slag leaching resistance of bricks, and reduce porosity. It is constantly improving, and the price of industrial zirconia and chromium oxide green is extremely expensive, which increases the cost of making bricks and using zirconia and chromium oxide green refractory bricks, and limits the promotion and use of chromium-containing zirconium refractory bricks. [0003] At present, the amount of discarded high-chrome bricks after use in my country is more than 150,000 tons pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/622
Inventor 彭霞刘晨光关玉英徐晓
Owner JINZHOU YINGMING REFRACTORY MATERIALS
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