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Environment-friendly magnesia-chrome brick for steel refining and non-ferrous metal smelting and preparation method thereof

A technology of non-ferrous metals and magnesia-chrome bricks, applied in the field of magnesia-chrome refractory materials, can solve problems such as human and environmental hazards, strong carcinogenic fractures, etc., and achieve significant economic benefits, benefit human health, and far-reaching historical significance

Active Publication Date: 2014-02-05
海城利尔麦格西塔材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under high temperature, alkaline and oxidizing atmosphere, Cr in magnesia-chrome refractories 3+ The ions will be converted into Cr with strong carcinogenicity, DNA fragmentation, reproductive toxicity, and genotoxicity 6+ Ions, harmful to human body and environment

Method used

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  • Environment-friendly magnesia-chrome brick for steel refining and non-ferrous metal smelting and preparation method thereof
  • Environment-friendly magnesia-chrome brick for steel refining and non-ferrous metal smelting and preparation method thereof
  • Environment-friendly magnesia-chrome brick for steel refining and non-ferrous metal smelting and preparation method thereof

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Embodiment Construction

[0053] The specific embodiment of the present invention is further described below:

[0054] The present invention is an environment-friendly magnesia-chrome brick for iron and steel refining and non-ferrous metal smelting, and the weight ratio of the magnesia-chrome brick is shown in Table 3:

[0055] Table 3 Proportion examples of environmentally friendly magnesia-chrome bricks for iron and steel refining and non-ferrous metal smelting

[0056] ingredients

[0057] 0

[0058] The preparation method of above-mentioned embodiment 1-4 is identical, and completes according to the following steps:

[0059] 1) Crushing, screening and fine grinding of raw materials:

[0060] The magnesia is crushed in the crusher to make raw materials with two particle sizes of 1<particle size≤3mm and 0mm<particle size≤0.088mm.

[0061] The magnesia chrome sand is crushed in a crusher to make raw materials with three particle sizes of 3<part...

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Abstract

The invention relates to an environment-friendly magnesia-chrome brick for steel refining and non-ferrous metal smelting. The magnesia-chrome brick is prepared by the following raw materials in parts by weight: 5 to 25 parts of magnesia sand particles with the particle size of greater than 1 mm and less than or equal to 3 mm, 5 to 15 parts of magnesia sand with the particle size of greater than 0 mm and less than or equal to 0.088 mm, 5 to 25 parts of magnesia-chrome sand with the particle size of greater than 3 mm and less than or equal to 5 mm, 5 to 20 parts of magnesia-chrome sand with the particle size of greater than 1 mm and less than or equal to 3 mm, 10 to 30 parts of magnesia-chrome sand with the particle size of greater than 0 mm and less than or equal to 1 mm, 5 to 15 parts of chrome ore with the particle size of greater than 1 mm and less than or equal to 3 mm, 5 to 15 parts of chrome ore with the particle size of greater than 0 mm and less than or equal to 0.088 mm, 5 to 10 parts of magnesia-chrome waste brick powder with the particle size of greater than 0 mm and less than or equal to 0.088 mm, and 1 to 6 parts of bonding agent. Compared with the prior art, the environment-friendly magnesia-chrome brick for the steel refining and non-ferrous metal smelting has the beneficial effects that the production cost is reduced, economic benefits are remarkable, practical significance and profound historical significance are brought for solving the problems of international industrial cancer, improvement of ecological environment and benefit of human health.

Description

technical field [0001] The invention relates to the technical field of magnesia-chrome refractory materials, in particular to an environment-friendly magnesia-chrome brick for iron and steel refining and nonferrous metal smelting and a preparation method thereof. Background technique [0002] Magnesium-chromium refractories are inorganic non-metallic materials and basic refractory products. They have excellent properties such as high refractoriness, corrosion resistance and spalling resistance. They are still an irreplaceable key basic material for global steel refining and non-ferrous metallurgy. However, under high temperature, alkaline and oxidizing atmosphere, Cr in magnesia-chrome refractories 3+ The ions will be converted into Cr with strong carcinogenicity, DNA fragmentation, reproductive toxicity, and genotoxicity 6+ Ions are harmful to human body and environment. Developed countries strictly regulate Cr in magnesia-chrome bricks 6+ The content must be controlled ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 陈龙盛开泉王维姜楠张义先
Owner 海城利尔麦格西塔材料有限公司
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