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Water-proof acid resistant heat resistant light heat insulating casting material and its manufacturing method

A light-weight heat insulation and castable technology, which is applied in manufacturing tools, ceramic molding machines, sustainable waste treatment, etc., can solve the problems of thermal insulation performance decline, self-weight increase, density increase, etc., and achieve impermeability and antifreeze performance Good, low water absorption effect

Inactive Publication Date: 2004-10-20
张东辉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminate cement has good heat resistance and sulfate corrosion resistance, but because of its large calcium content, it is easily corroded by sulfuric acid of various concentrations. Therefore, it is necessary to use aluminate cement as acid-resistant cement. gross error in basic concept
[0013] 2. It is very unfavorable to use broken clay aggregate
Because the sintered clay aggregate is a microporous material, it becomes an open-pore material after being broken. After being mixed with cement, water glass and other materials, the pores are filled, which not only increases the density, but also greatly increases the thermal conductivity, resulting in thermal insulation. The performance is greatly reduced and the self-weight is increased, which is not good for the structural design, and the project cost is also increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A waterproof, acid-resistant, heat-resistant, lightweight heat-insulating castable, composed of shale ceramsite, ceramsite granules, cast stone powder, fly ash floating beads and other fine powders, zinc fluorosilicate, ammonium phosphate and potassium sodium silicate Solution composition. Its ratio is:

[0029] Shale ceramsite: particle size 15 ~ 5mm 0.566

[0030] Shale pottery sand: particle size 5-0.2mm 0.425

[0031]Cast stone powder: 180 mesh 0.404

[0032] Fly ash floating beads 0.121

[0033] Zinc fluorosilicate 0.130

[0034] Ammonium phosphate 0.014

[0035] Water-soluble epoxy resin 0.02

[0036] Potassium sodium silicate solution d=1.36~1.4 1.0

[0037] The method of manufacturing the castable: weigh each component according to the above mixing ratio, stir it evenly by mechanical or manual, pour it into a mold or formwork, manually vibrate or tamp it compactly, remove the mold after solidification and hardening at room temperature for 1-5 days, Natur...

Embodiment 2

[0039] A waterproof, acid-resistant, heat-resistant, light-weight heat-insulating castable, which is composed of clay ceramsite, ceramsite granules, high-alumina clinker powder, silicon micropowder and other fine powders, condensed aluminum phosphate, sodium fluorosilicate, powdery instant silicic acid Sodium and water composition. Among them, the ratio is:

[0040] Clay ceramsite: Particle size: 15~5mm 1.37

[0041] Ceramic sand particles: particle size: 5 ~ 0.2mm 0.68

[0042] High alumina clinker powder: 180 mesh 0.59

[0043] Silica powder: <5μ 0.085

[0044] Condensed Aluminum Phosphate: 0.105

[0045] Sodium fluorosilicate: 0.079

[0046] Powdered instant sodium silicate: 0.645

[0047] Water-soluble epoxy resin: 0.02

[0048] Water1

[0049] The method of manufacturing the castable: weigh each component according to the above mixing ratio, stir it evenly by mechanical or manual, pour it into a mold or formwork, manually vibrate and compact it, remove the mold af...

Embodiment 3

[0051] A waterproof, acid-resistant, heat-resistant, lightweight heat-insulating castable, which is composed of coal ash ceramsite, cinder, fly ash, acid-resistant porcelain powder, sodium fluorosilicate, aluminum sulfate, oxalic acid, water-soluble epoxy resin, and potassium silicate solution Composition, wherein each component weight ratio is:

[0052] Fly ash ceramsite: particle size: 5 ~ 12mm 1.4

[0053] Cinder: particle size: 5 ~ 0.2mm 0.8

[0054] Fly ash: <140 mesh 0.32

[0055] Acid-resistant porcelain powder: <160 mesh 0.44

[0056] Sodium fluorosilicate: 0.12

[0057] Aluminum sulfate: 0.03

[0058] Oxalic acid: 0.004

[0059] Water-soluble epoxy resin: 0.01

[0060] Potassium silicate solution: d=1.25~1.6 1

[0061] Waterproof water-soluble epoxy resin: 0.02

[0062] The method of manufacturing the castable: weigh each component according to the above mixing ratio, stir it evenly by mechanical or manual, pour it into a mold or formwork, manually vibrate and...

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Abstract

A water-proof light-weight insulating casting material resisting acid and high temp for the liner of chimney is prepared from the inorganic light aggregate particles resisting acid and high temp, the acid and high temp resistant powder, the acid and high temp resistant adhesive and additive through proportional mixing, stirring, casting in mould for 1-5 days, demoulding, and natural drying and curing. Its advantages are high volume density and strength, light weight and high resistance to water, acid and high temp.

Description

technical field [0001] The invention relates to an anti-corrosion and anti-crack integral lining for thermal power plant chimneys, especially a waterproof amorphous acid-resistant, heat-resistant, light-weight heat-insulating castable that can be widely used in various types of chimneys and flues of thermal power plants. The invention also relates to a method of manufacturing the castable. Background technique [0002] In the design of high chimneys in thermal power plants in my country, independent reinforced concrete chimneys have been used for nearly half a century. Before the 1970s, this traditional reinforced concrete chimney followed the construction model of the former Soviet Union, that is, a reinforced concrete outer cylinder, It is composed of 50mm air insulation layer and inner lining of clay red bricks built with cement mortar. Since the 1980s, the original air insulation layer has generally been replaced by thermal insulation materials such as aerated concrete, ...

Claims

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Application Information

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IPC IPC(8): B28B1/14C04B14/04C04B18/04C04B22/08C04B24/00C04B28/24
CPCY02W30/91
Inventor 张力学侯盾
Owner 张东辉
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