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Calciclase light heat-insulating refractory material and preparation method thereof

A technology of lightweight heat insulation and refractory materials, applied in the field of refractory materials, can solve the problems of irregular shape of pores, difficulty in controlling volume density, environmental pollution, etc., and achieve the effects of uniform pores, high production efficiency and high strength

Active Publication Date: 2012-06-13
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of insulation made from aluminum oxide (Al2O3) can be used for various applications such as furnaces or kilns due to its excellent properties like fire resistance, durability against erosion caused by molten metal during use, good electrical resistances, etc., which makes it ideal for these purposes over other materials commonly found today.

Problems solved by technology

This patented technical problem addressed by this patents relates to producing ceramics that can be easily made without adding too much weight but still maintain their strength when exposed to harsh environments like those found during industrial use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 20wt% kyanite, 55wt% Shanxi mullite, 5wt% aluminate cement, 10wt% gypsum, 10wt% wollastonite, plus 300wt% active calcium silicate slurry.

[0020] Stir the base material and the active calcium silicate slurry evenly, and pour them into the mold. The mixing time of the base material and the active calcium silicate slurry and the time of pouring into the mold are controlled to be less than 15 minutes in total, and the casting method is used for molding. After 20 minutes Release the mold to form a dry green body, dry naturally at room temperature for 12 hours, and then dry at 110°C until the moisture content is below 2%.

[0021] Put the dried green body into a calciner for firing. The firing system: heating rate of 15°C / min to 950°C, heat preservation for 3h, 10°C / min to 1300°C, heat preservation for 3h°C, and natural cooling.

[0022] The fired green body is cut according to the required size to obtain the corresponding anorthite lightweight heat-insulating refractory ma...

Embodiment 2

[0024] Kyanite 15wt%, Shanxi mullite 60wt%, aluminate cement 5wt%, gypsum 10wt%, wollastonite 10wt%, and active calcium silicate slurry 250wt%.

[0025] Stir the base material and active calcium silicate slurry evenly, and pour it into the mold. The mixing time of the base material and the active calcium silicate slurry and the time of pouring into the mold are controlled at a total of less than 15 minutes, and the vibration casting method is used for molding, 25 minutes After demoulding to make a dry green body, dry it naturally at room temperature for 12 hours, and then dry it at 110°C until the moisture content is below 2%.

[0026] Put the dried green body into a calciner for firing. The firing system: heating rate of 15°C / min to 950°C, heat preservation for 3h, 10°C / min to 1350°C, heat preservation for 3h°C, and natural cooling.

[0027] The fired green body is cut according to the required size to obtain the corresponding anorthite lightweight heat-insulating refractory ...

Embodiment 3

[0029] Kyanite 25wt%, Shanxi mullite 60wt%, aluminate cement 5wt%, gypsum 5wt%, wollastonite 5wt%, and active calcium silicate slurry 350wt%.

[0030] Stir the base material and the active calcium silicate slurry evenly, and pour them into the mold. The mixing time of the base material and the active calcium silicate slurry and the time of pouring into the mold are controlled to be less than 15 minutes in total, and the casting method is used for molding. After 25 minutes Release the mold to form a dry green body, dry naturally at room temperature for 24 hours, and then dry at 110°C until the moisture content is below 2%.

[0031] Put the dried green body into a calciner for firing. The firing system: heating rate of 15°C / min to 950°C, heat preservation for 3h, 10°C / min to 1400°C, heat preservation for 3h°C, and natural cooling.

[0032] The fired green body is cut according to the required size to obtain the corresponding anorthite lightweight heat-insulating refractory mater...

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Abstract

The invention relates to a refractory material, in particular to a calciclase light heat-insulating refractory material and a preparation method thereof. The calciclase light heat-insulating refractory material is characterized by being prepared from the following raw materials in percentage by mass: 15 to 25 percent of kyanite, 50 to 60 percent of Shanxi mullite, 5 to 10 percent of wollastonite,5 to 10 percent of aluminate cement, 5 to 15 percent of gypsum and 200 to 400 percent of active calcium silicate slurry through batching, forming and calcining. A preparation method is easy to operate, high in production efficiency, uniform in air holes of products, high in strength and small in coefficients of heat conductivity.

Description

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Claims

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Application Information

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Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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