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Magnesium-calcium-carbon refractory material and preparation method thereof

A refractory material, magnesium-calcium-carbon technology, applied in the field of refractory materials, can solve problems such as insufficient oxidation resistance, and achieve the effects of reducing apparent porosity, increasing strength, and increasing bulk density

Inactive Publication Date: 2015-12-09
长兴泓矿炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of refractoriness in order to solve the defect that the hydration resistance and oxidation resistance of magnesia calcium carbon bricks in the existing process of preparing magnesia calcium carbon refractories are not enough, and the thermal shock resistance also needs to be improved. High, excellent corrosion resistance, good thermal shock resistance, good oxidation resistance, magnesia-calcium-carbon refractories with a wide sintering temperature range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A magnesia-calcium-carbon refractory material. The magnesia-calcium-carbon refractory material is composed of the following raw materials in parts by mass: 100 parts of magnesia-calcium sand particles, 40 parts of magnesia-calcium sand fine powder, 15 parts of nano-magnesia, 20 parts of nano-calcium oxide, 20 parts of zirconium, 10 parts of graphene, 5 parts of additive, 7 parts of binder and 5 parts of carbon nanofiber.

[0036] A preparation method of a magnesium-calcium-carbon refractory material, each raw material is weighed according to the above ratio, and the mixed material after mixing is ground for 10 hours with anhydrous alcohol as a medium, and then dried in a vacuum to obtain a powder, and the reaction powder is applied The 5000 volt plasma arc melts the powder, and blows the melted powder into the press equipment through an inert gas to prepare shaped products of various required sizes. After drying at 120°C for 10 hours, it is kept at 450°C. The magnesium-...

Embodiment 2

[0039] A magnesia-calcium-carbon refractory material. The magnesia-calcium-carbon refractory material is composed of the following raw materials in parts by mass: 110 parts of magnesia-calcium sand particles, 45 parts of magnesia-calcium sand fine powder, 25 parts of nano-magnesia, 25 parts of nano-calcium oxide, 30 parts of zirconium, 15 parts of graphene, 7 parts of additives, 10 parts of binder and 8 parts of carbon nanofiber.

[0040]A kind of preparation method of magnesia-calcium-carbon refractory material, each raw material is weighed according to the above ratio, the mixed material after uniform mixing is ground with absolute alcohol as the medium for 11 hours, then dried in vacuum to obtain powder, and the reaction powder is applied The 6000 volt plasma arc melts the powder, and blows the melted powder into the press equipment through an inert gas to prepare shaped products of various required sizes. After drying at 140°C for 11 hours, it is kept at 465°C. The magnesi...

Embodiment 3

[0043] A magnesia-calcium-carbon refractory material. The magnesia-calcium-carbon refractory material is composed of the following raw materials in parts by mass: 120 parts of magnesia-calcium sand particles, 50 parts of magnesia-calcium sand fine powder, 35 parts of nano-magnesia, 30 parts of nano-calcium oxide, 35 parts of zirconium, 20 parts of graphene, 10 parts of additives, 12 parts of binder and 12 parts of carbon nanofiber.

[0044] A kind of preparation method of magnesia-calcium-carbon refractory material, each raw material is weighed according to the above ratio, the mixed material after uniform mixing is ground with anhydrous alcohol as the medium for 12 hours, then dried in vacuum to obtain the powder, and the reaction powder is applied The 7000 volt plasma arc melts the powder, and blows the melted powder into the press equipment through an inert gas to prepare shaped products of various required sizes. After drying at 150°C for 12 hours, it is kept at 480°C. The...

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Abstract

The invention relates to a magnesium-calcium-carbon refractory material and a preparation method thereof. The refractory material comprises 100-120 parts of magnesia-calcia clinker particles, 40-50 parts of magnesia-calcia clinker fine powder, 15-35 parts of nano-magnesia, 20-30 parts of nano-calcia, 20-35 parts of zirconia, 10-20 parts of graphene, 5-10 parts of an additive, 7-12 parts of a binder and 5-12 parts of nano-carbon fibers. The inside of the refractory material prepared in the invention is compact, so the bulk density is improved, and the apparent porosity of the refractory material is reduced to prevent expansion, thereby all physical performances, such as the strength, the thermal shock resistance and the thermal impact resistance of the refractory material are further improved; and the preparation method has the advantages of simplicity, abundant raw materials, and suitableness for factory production.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a magnesium-calcium-carbon refractory material with high refractoriness, excellent corrosion resistance, good thermal shock resistance and wide sintering temperature range and a preparation method thereof. Background technique [0002] With the increasing shortage of energy, countries are paying more and more attention to the development, production and use of high-temperature industrial energy-saving materials. High-temperature kilns need to use a large number of refractory materials with excellent performance or special properties. Magnesium-calcium refractory is a kind of basic refractory material, which has been used as the lining material of steelmaking converter since the 1960s, and has contributed to the development of my country's converter steelmaking industry. [0003] Magnesia-calcium-carbon brick is a refractory product made of dolomite sand, magnesia-calcium sand,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 佘建锋
Owner 长兴泓矿炉料有限公司
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