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Light acid-proof brick and preparation thereof

A kind of acid-resistant brick, lightweight technology, applied in clay products, other household utensils, applications, etc., can solve the problems of poor thermal insulation performance and heavy weight, and achieve the effect of good thermal insulation performance, light weight, and even and reasonable ingredients

Inactive Publication Date: 2008-10-01
吕则文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lightweight acid-resistant bricks currently used are mainly made of clay, coal ash, coke gemstones and other materials, and the bulk density is generally 1.6-1.8g / cm 3 , heavy weight, poor thermal insulation performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Raw material weight percentage ratio: diatomite 40%, pottery clay aggregate 30%, fly ash 30%.

[0016] The raw materials are pulverized and screened, the particle size of diatomite is 120 mesh, the particle size of clay aggregate is 10 mesh, and the fly ash is all passed through a 12 mesh sieve. After the raw materials are mixed, 7% of the total weight of water is added to make mud. Technical method Carry out kneading, molding, drying at 60-100°C, and firing at 1100°C.

[0017] The physical and chemical indicators of the measured product are:

[0018] Bulk density: 0.9g / cm 3

[0019] Normal temperature compressive strength: 37MPa

[0020] Acid resistance %: 98.5

[0021] Thermal conductivity W / m.k: 0.35

[0022] Silica content 68.2%

[0023] Aluminum oxide 23%

[0024] Ferric oxide 7%.

Embodiment 2

[0026] Raw material weight percentage ratio: diatomite 35%, pottery clay aggregate 37%, fly ash 28%.

[0027] The raw materials are pulverized and screened, the particle size of diatomite is 150 mesh, the particle size of clay aggregate is 8 mesh, and the fly ash is all passed through a 12 mesh sieve. After the raw materials are mixed, 7.5% of the total weight of water is added to make mud. Technical method Carry out kneading, molding, drying at 60-100°C, and firing at 1100°C.

[0028] The physical and chemical indicators of the measured product are:

[0029] Bulk density: 0.8g / cm 3

[0030] Normal temperature compressive strength: 35MPa

[0031] Acid resistance %: 98.5

[0032] Thermal conductivity W / m.k: 0.35

Embodiment 3

[0034] Raw material weight percentage ratio: diatomite 45%, pottery clay aggregate 30%, fly ash 25%.

[0035] The raw materials are pulverized and screened, the particle size of diatomite is 150 mesh, the particle size of clay aggregate is 8 mesh, and the fly ash is all passed through a 12 mesh sieve. After the raw materials are mixed, 7% of the total weight of water is added to make mud. Technical method Carry out kneading, molding, drying at 60-100°C, and firing at 1110°C.

[0036] The physical and chemical indicators of the measured product are:

[0037] Bulk density: 1.0g / cm 3

[0038] Normal temperature compressive strength: 37MPa

[0039] Acid resistance %: 98.5

[0040] Thermal conductivity W / m.k: 0.4

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Abstract

The invention relates to a light weight acid resistant brick which is characterized in that: the components of the light weight acid resistant brick comprise by weight percentage 35 to 45 percent of diatomite, 30 to 40 percent of pottery clay aggregate and 25 to 30 percent of pulverized fuel ash. The granularity of the diatomite is 120 to 150 meshes, the granularity of the pottery clay aggregate is 8 to 10 meshes and the pulverized fuel ash is screened by a 12-mesh sieve. The preparation method of the light weight acid resistant brick is characterized in that the raw materials are smashed, screened and added with water to make pug which is then milled, molded, dried (under temperature of 60 to 100 DEG C) and burned under temperature of 1100 plus or minus 10 DEG C to obtain finished products. The light weight acid resistant brick of the invention has reasonable and uniform proportioning, strictly controlled burning temperature and beautiful color of the finished products, light weight (the bulk density is 0.8 to 1.0 g / m <3>) and good heat insulating property (the heat conductivity coefficient is 0.3 to 0.4 W / m question mark k), the cost of which is lowered by 30 percent, compared with the prior art.

Description

technical field [0001] The invention relates to a lightweight acid-resistant brick and a preparation method thereof. Background technique [0002] Lightweight acid-resistant bricks are mainly used in chimneys and flue linings of power plants, as well as furnace roofs and coke bins in coking plants. The lightweight acid-resistant bricks currently used are mainly made of clay, coal ash, coke gemstones and other materials, and the bulk density is generally 1.6-1.8g / cm 3 , heavy weight, poor thermal insulation performance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a lightweight acid-resistant brick with low bulk density, good thermal insulation performance and low cost and its preparation method. [0004] The lightweight acid-resistant brick of the present invention is characterized in that its raw materials are composed of: [0005] 35-45% of diatomite, 30-40% of clay aggregate and 25-30% of fly ash. [00...

Claims

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Application Information

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IPC IPC(8): C04B33/04C04B33/135C04B33/28C04B33/30C04B33/32
CPCY02P40/60
Inventor 吕则文
Owner 吕则文
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