Casting material for steel ladle

A castable and ladle technology, applied in the field of refractory materials, can solve problems such as restricting the depth and breadth of application, difficulty in producing shaped products, and not being well solved.

Inactive Publication Date: 2015-02-18
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
It is so difficult to produce shaped products, so the difficulty of producing unshaped products (castables) can be imagined; therefore, how to improve the oxidation resistance and thermal shock resistance of calcium magnesium refractory materials has always been a problem for refractory manufacturers. big problem

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 castables for ladles are: 50 parts of magnesia, 5 parts of dolomite, 5 parts of zircon, 5 parts of nano-carbon fiber, 5 parts of anhydrous binder, and 5 parts of iron-aluminum spinel Parts, 20 parts of refractory steel fiber; Wherein, the parts by weight of granule and fine powder are: 45 parts of granule, 55 parts of fine powder, the range of particle size is 2.0mm, and the particle size of fine powder is 0.1mm.

[0014] (2) Premix magnesia, dolomite, zircon, and iron-aluminum spinel to obtain a mixture, grind the mixture according to the weight of the above-mentioned particles and fine powder, and then add nano-carbon fiber and refractory steel fiber for Mix, and finally add anhydrous binder to mix the castable for ladle.

Embodiment 2

[0016] (1) The parts by weight of raw materials used to prepare castables for ladles are: 60 parts of magnesia, 20 parts of dolomite, 10 parts of zircon, 10 parts of nano-carbon fiber, 10 parts of anhydrous binder, and 10 parts of iron-aluminum spinel 1 part, 1 part of refractory steel fiber; magnesia, dolomite, zircon, iron-aluminum spinel are mixed to make granule and fine powder, wherein, the parts by weight of granule and fine powder are: 55 parts of granule, 45 parts of fine powder Parts, the particle size range is 2.5mm, and the fine powder particle size is 0.8mm.

[0017] (2) Premix magnesia, dolomite, zircon, and iron-aluminum spinel to obtain a mixture, grind the mixture according to the weight of the above-mentioned particles and fine powder, and then add nano-carbon fiber and refractory steel fiber for Mix, and finally add anhydrous binder to mix the castable for ladle.

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Abstract

The invention discloses a casting material for a steel ladle. The casting material is prepared from the following components in parts by weight: 50-60 parts of magnesia, 5-20 parts of dolomite, 5-10 parts of zircon, 5-10 parts of carbon nanofibers, 5-10 parts of a water-free binder, 5-10 parts of hercynite and 1-20 parts of fire-resistant steel fibers, wherein the magnesia, the dolomite, the zircon and the hercynite are mixed to prepare 45-55 parts of particles and 55-45 parts of fine powder, the particles are 2.0-2.5 mm in particle size, and the fine powder is 0.1-0.8 mm in particle size.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a casting material 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; in the United States, it is about 50%; in Britain, Germany, France and other countries, it is 40% to ...

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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