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Steel ladle fireproof casting material

A refractory castable and ladle technology, applied in the field of refractory materials, can solve the problems of increasing product cost, troublesome product storage, transportation and use, and restricting the depth and breadth of application

Inactive Publication Date: 2016-05-11
NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, calcium-magnesia refractory materials have gradually been widely used in the steelmaking industry because of their environmental protection and ability to clean molten steel. However, the problem of easy hydration of calcium oxide has not been well resolved, which restricts its Depth and breadth of application
[0005] Calcium-containing refractory materials commonly used at present-the calcium-magnesia sand without surface waterproof treatment can be stored naturally without hydration for more than 100 days; Calcium-magnesia bricks prepared from treated calcium-magnesia sand not only need to use anhydrous or liquid binder with as little water content as possible, but also the produced calcium-magnesia bricks must be treated with oil or wax before being stored in vacuum packaging. No hydration for 180 days; it not only increases the cost of the product, but also brings a lot of trouble to the storage, transportation and use of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) The parts by weight of raw materials used to prepare refractory castables for ladles are: 50 parts of magnesia, 20 parts of dolomite, 5 parts of zircon, 15 parts of carbon, 4 parts of anhydrous binder, and iron-aluminum spinel 6 parts; magnesia, dolomite, and zircon are mixed to make granules and fine powders, wherein the parts by weight of granules and fine powders are: 40 parts of granules, 60 parts of fine powders, the particle size range is 2.5, and the fine powders The particle size is 0.9 mm.

[0014] (2) Premix the magnesia, dolomite, zircon, and iron-aluminum spinel to obtain the mixture, pulverize the mixture according to the weight of the above particles and fine powder, then add carbon for mixing, and finally Add anhydrous binder and mix the obtained refractory castable for ladle.

Embodiment 2

[0016] (1) The parts by weight of raw materials used to prepare refractory castables for ladles are: 70 parts of magnesia, 5 parts of dolomite, 10 parts of zircon, 5 parts of carbon, 2 parts of anhydrous binder, and ferroaluminum spinel 8 parts; magnesia, dolomite, zircon are mixed to make granule and fine powder, wherein, the parts by weight of granule and fine powder are: 50 parts of granule, 50 parts of fine powder, the range of particle size is 2.0mm, fine The particle size of the powder is 0.1 mm.

[0017] (2) Premix the magnesia, dolomite, zircon, and iron-aluminum spinel to obtain the mixture, pulverize the mixture according to the weight of the above particles and fine powder, then add carbon for mixing, and finally Add anhydrous binder and mix the obtained refractory castable for ladle.

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Abstract

The invention relates to a steel ladle fireproof casting material, which is prepared from the following components by weight: 50-70 parts of magnesite, 5-20 parts of dolomite, 5-10 parts of zircon, 1-20 parts of carbon, 2-5 parts of an anhydrous binder, and 1-8 parts of hercynite, wherein the magnesite, the dolomite, the zircon and the hercynite are mixed to prepare 40-50 parts by weight of particles and 50-60 parts by weight of fine powder, the particle size of the particles is 2.0-2.5 mm, and the particle size of the fine powder is 0.1-0.9 mm.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a refractory castable for a ladle. Background technique [0002] Compared with qualitative refractory products, unshaped refractory materials represented by refractory castables have the advantages of short process flow, low production energy consumption and cost, convenient use, wide application range, integrity and good use effect, so they are widely used in the world. It has developed rapidly, and its proportion in the whole refractory material is getting higher and higher. In some countries with advanced refractory technology, the output of unshaped refractories has approached or even exceeded the output of shaped products. For example, the current output of unshaped refractory materials in Japan accounts for about 60% of the total refractory materials; that of the United States is about 50%; and that of countries such as Britain, Germany, and France...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 穆祥王西来董伟胜
Owner NINGXIA TIANZONG HONGGUANG COGENERATION TECH
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