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Method for producing magnesium carbon brick or magnesium aluminum carbon brick by taking waste magnesium carbon brick small and micro particles as main materials

A technology for waste magnesia-carbon bricks and magnesia-alumina-carbon bricks, which is applied in the production field of magnesia-carbon bricks or magnesia-alumina-carbon bricks, which can solve the problems of occupying space and unbalanced use, so as to save space, reduce the amount of addition, and reduce environmental pollution Effect

Inactive Publication Date: 2019-06-14
ZHENGZHOU ZHENDONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still 10-15% of waste magnesia-carbon bricks with small particles (particle size less than 1.5mm) that cannot be used in a balanced manner due to technical limitations, and tens of thousands of tons of waste are piled up, taking up a lot of space

Method used

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  • Method for producing magnesium carbon brick or magnesium aluminum carbon brick by taking waste magnesium carbon brick small and micro particles as main materials
  • Method for producing magnesium carbon brick or magnesium aluminum carbon brick by taking waste magnesium carbon brick small and micro particles as main materials
  • Method for producing magnesium carbon brick or magnesium aluminum carbon brick by taking waste magnesium carbon brick small and micro particles as main materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Preparation of a magnesia carbon brick used in the ladle slag line

[0024] Raw material ratio (in parts by weight): 59 parts of waste magnesia-carbon bricks (particle size 1-0mm) 59 parts, fused magnesia (particle size 1-0mm) 25 parts, sintered magnesia (1-0mm) 18 parts 1.5 parts of metallic aluminum powder (0.074-0mm in particle size), 1 part of high-temperature asphalt powder (0.088-0mm in particle size), 1 part of metallic silicon powder (0.074-0mm in particle size), 3 parts of graphite (-195), synthesized Antioxidant 0.5 part;

[0025] Concrete preparation steps are:

[0026] The first step, homogenization

[0027] Mix different batches of waste magnesia-carbon brick small and micro pellets in batches of about 120 tons, so that the proportion of pellets of the same material and different components tends to be balanced;

[0028] The second step, mixing

[0029] Put the homogenized waste magnesia-carbon brick small particles and the above-mentioned raw...

Embodiment 2

[0035] Example 2 Preparation of a magnesia-alumina-carbon brick used in a ladle slag line or clad wall

[0036] Raw material ratio (by weight): 80 parts of waste magnesia-carbon brick small particles (particle size 1-0mm), 15 parts of fused magnesia (particle size 1-0mm), first-grade bauxite (particle size 1 -0mm) 5 parts, synthetic antioxidant 0.5 part, high temperature asphalt powder (particle size 0.088-0mm) 0.5 part;

[0037] The preparation steps are the same as in Example 1, the binder used is a resin binder, and the dosage is 2.5-4% of the total amount of materials.

[0038] After testing, the physical and chemical indicators of the finished magnesia-alumina-carbon bricks are as follows:

[0039]

[0040] It can be used in the above-mentioned places of use.

Embodiment 3

[0041] Example 3 Preparation of a magnesia-alumina-carbon brick used in a ladle slag line or clad wall

[0042] Raw material ratio (in parts by weight): 98 parts of waste magnesia-carbon brick small particles (particle size 1-0mm), 5 parts of white corundum (particle size 1-0mm), metal aluminum powder (particle size 0.074-0mm) 1.5 1 part, high temperature asphalt powder (particle size 0.088-0mm) 1 part, silicon carbide powder (particle size 0.074-0mm) 3 parts, lanthanum oxide 1 part, brown corundum (particle size 0.088-0mm) 3 parts, synthetic antioxidant 0.5 part ;

[0043] The preparation steps are the same as in Example 1, the binder used is a resin binder, and the dosage is 3.5-4% of the total amount of materials.

[0044] After testing, the physical and chemical indicators of the finished magnesia-alumina-carbon bricks are as follows:

[0045]

[0046] It can be used in the above-mentioned places of use.

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Abstract

The invention discloses a method for producing a magnesium carbon brick or a magnesium aluminum carbon brick by taking waste magnesium carbon brick small and micro particles as main materials. The magnesium carbon brick or the magnesium aluminum carbon brick is prepared from a waste magnesium carbon brick small and micro particle material, bauxite with the particle size being 1-0 mm or / and corundum or / and spinel or / and fused magnesite or / and a sintered magnesite particle material, and an additive with the particle size being 0.5-0 mm in parts by weight according to a ratio of (59-98) to (2-43)to (1-15). The method disclosed by the invention has the advantages that the waste magnesium carbon brick small and micro particles which are idled and stacked for a long term are adopted as the mainraw materials (with the using amount capable of reaching up to 59-98%) to prepare the magnesium carbon brick or the magnesium aluminum carbon brick; the purposes that the waste magnesium carbon bricksmall and micro particles serve as the main raw materials to be applied, and the waste is turned into wealth are achieved; the production cost is greatly lowered; space is saved; the cost of bricks per ton can be lowered by RMB 1000-1800 yuan; a dried finished magnesium carbon brick or magnesium aluminum carbon brick product can fully meet the using requirements of a customer; the using effect isequivalent to the quality level of a magnesium carbon brick or magnesium aluminum carbon brick produced by a conventional method; and in certain specific using environments, the actual using effect of the product is even better than that of the conventional magnesium carbon brick or magnesium aluminum carbon brick.

Description

technical field [0001] The invention relates to the production of magnesia-carbon bricks or magnesia-alumina-carbon bricks, in particular to a kind of production of magnesia-carbon bricks or magnesia-aluminum bricks by using small and micro particles which are difficult to balance the use of the waste magnesia-carbon bricks after industrial kilns are broken. carbon brick method. Background technique [0002] Since the beginning of 2017, the raw material of fused magnesia has risen from the original 2,200 yuan / ton to the current 5,700 yuan / ton, and 96.5% sintered magnesia has also soared from the original 1,650 yuan / ton to 5,000 yuan / ton. Although these raw materials were inferior in quality and high in price, they were still out of stock for a time, which seriously affected the normal production of refractory enterprises. In order to reduce production costs and improve the reuse of waste refractory materials, our company carried out research on the utilization of waste magn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/043C04B35/622
Inventor 侯会峰侯振东刘大圈王俊超王俊峰
Owner ZHENGZHOU ZHENDONG TECH