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High-strength and high-aluminum light heat-insulation and fire-resistant brick and production method thereof

A light-weight thermal insulation and production method technology, applied in other household appliances, ceramic products, household appliances, etc., can solve the problems of low product price, high raw material cost, general performance, etc., and achieve low thermal conductivity, high temperature reburning The effect of low line change rate and simple formula

Active Publication Date: 2015-10-14
郑州东方炉衬材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the formula of this product is relatively complicated, the cost of raw materials is high, the performance is average, and the cost performance of the product is low

Method used

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  • High-strength and high-aluminum light heat-insulation and fire-resistant brick and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: High-alumina lightweight heat-insulating refractory brick and its production method, the ratio of raw materials is shown in Table 2, and 30% of high-alumina bauxite clinker, 55% of binder kaolin, and expansion agent kyanite are weighed by weight percentage 15%, based on the above raw materials, plus 0.1% engineering fiber and 0.15% water reducing agent of the total amount of basic raw materials, and add 0.8m expandable polystyrene balls per ton of basic raw materials 3 .

[0038] The aluminum content of the high-alumina bauxite clinker is 50-88%, the particle size is 200-325 mesh, the particle size of kyanite is 180 mesh, and the particle size of kaolin is 200-325 mesh; the engineering fiber is made of polypropylene fiber, companion Polyester fiber is dominant, the fiber length is 15-20mm, and the fiber diameter is 18-40 microns.

[0039] The expandable polystyrene balls are spherical particles formed by high-temperature steam processing of expandable polyst...

Embodiment 2

[0044] Embodiment 2: The raw material ratio of high-alumina lightweight heat-insulating refractory bricks is shown in Table 2, and its production method is basically the same as Example 1, the difference is:

[0045] The weight ratio of the total amount of high alumina bauxite clinker, expansion agent, and binder to water is 1:0.4; when the brick is dried in two stages, the first stage is dried at low temperature, the drying temperature is 20~30°C, and the drying time is 30~ 36h; the second stage of forced drying, the drying temperature is 90~100℃, the drying time is 30~36h, the moisture content of the brick after drying is controlled below 5%; There are breathable drainage holes on the top, a cotton cloth layer is laid on the aluminum alloy plate, and an adhesive is used to bond the aluminum alloy plate and the cotton cloth layer.

[0046] The firing temperature system for heating the adobe from room temperature is as follows: the adobe is heated from room temperature to 700°...

Embodiment 3

[0047] Embodiment 3: The raw material ratio of high-alumina lightweight heat-insulating refractory bricks is shown in Table 2, and its production method is basically the same as Example 1, except that:

[0048] The weight ratio of the total amount of high alumina bauxite clinker, expansion agent, and binder to water is 1:0.3; when the brick is dried in two stages, the first stage is dried at low temperature, the drying temperature is 25~35°C, and the drying time is 24~ 30h; the second stage of forced drying, the drying temperature is 90~100°C, the drying time is 30~36h, and the moisture content of the brick after drying is controlled below 5%;

[0049] The firing temperature system for heating the adobe from room temperature to high temperature is as follows: the adobe is heated from room temperature to 750°C for 10 hours, and kept for 1 hour; heated to 1050°C for 6 hours, kept for 1.5 hours; heated to 1300°C for 6 hours, kept for 1 hour; Raise the temperature to 1400°C and ke...

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Abstract

The invention relates to a high-strength and high-aluminum light heat-insulation and fire-resistant brick, which is used in a heat-insulation layer in thermal equipment, and a production method thereof. The fire-resistant brick includes following basic raw materials: 30-35% of a high-aluminum alumina clinker, 10-20% of an expansion agent and 45-55% of a bonding agent and additionally includes 0.1-0.15% of engineering fibers and 0.15-0.2% of a water reducer on the basis of the total amount of the basic raw materials above. In addition, each ton of the basic raw materials is added with 0.7-2.0 m<3> of expandable polystyrene spheres. The bonding agent is kaolin or high-aluminum alumina cement and is 200-320 meshes in granularity. The production method includes the steps of stirring the raw materials to form a sludge material, preparing the sludge material into green bricks, drying the green bricks, and sintering the green bricks at 1350-1400 DEG C with heat insulation. The fire-resistant brick is high in pressure resistance strength, is low in heat conductivity and is low in change rate of a high temperature reburning curve. The normal-temperature pressure resistance strength of the fire-resistant brick is higher than that of a common fire-resistant brick by more than two times. The fire-resistant brick can be used in a heat insulation layer and a fireproof layer in all thermal equipment, achieves both energy-saving and fireproofing effects and is beneficial to popularization.

Description

technical field [0001] The invention relates to a lightweight heat-insulating refractory brick, in particular to a high-strength and high-aluminum lightweight heat-insulating refractory brick for thermal equipment heat insulation layer and a production method thereof. Background technique [0002] Energy is scarce in the world, and various thermal equipment are important facilities in industrial production, and they are also large energy consumers. Therefore, the refractory layer and heat insulation layer of various thermal equipment require heat preservation, fire resistance, and heat insulation. Long-term safe use, energy saving and consumption reduction guarantee greater economic benefits. At present, heat insulation and heat preservation refractory bricks of various materials are basically made of (1) adding combustible materials, such as plant saw foam, poly light ball; (2) low density, low refractoriness lightweight materials, such as expanded perlite, closed-cell pear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B38/06
Inventor 耿昌彬张青永
Owner 郑州东方炉衬材料有限公司
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