Quick-drying explosion-proof castable and producing process thereof

A castable and quick-drying technology, applied in the field of refractory materials, can solve the problems of fast-paced production process, difficult water vapor discharge, low porosity, etc., achieve significant economic and social benefits, and shorten demoulding maintenance time, the effect of shortening the oven time

Inactive Publication Date: 2012-09-26
LUOYANG KECHUANG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low porosity and high density of the castable material result in poor air permeability of the material itself, making it difficult to discharge the water vapor generated during the baking process smoothly and in a timely manner. When the steam pressure exceeds the bearing limit of the material itself, the furnace lining Cracks, peeling or even bursting will occur, so long-term (5-8 days) oven measures are usually taken to prevent the occurrence of bursting
Obviously, this is contrary to the fast-paced production process required by modern enterprises. In addition, long-term baking will also waste energy and cause serious economic losses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A quick-drying explosion-proof castable, its components and content are:

[0036] Component Particle Size Content (weight ratio)

[0037] 80 Bauxite 8-5mm 15%

[0038] 5-3mm 18%

[0039] 3-1mm 20%

[0040] 1-0mm 12%

[0041] 85 bauxite 200 mesh 24.3%

[0042] Aluminum 70 pure calcium aluminate cement 200 mesh 5%

[0043] Silica powder 3000 mesh 5%

[0044] Lithium carbonate 200 mesh 0.02%

[0045] Metal aluminum powder 200 mesh 0.03%

[0046] Explosion-proof fiber 0.1%

[0047] Sodium tripolyphosphate 0.15%

[0048] The production process of the present embodiment comprises the following steps:

[0049] Step 1: Purchasing raw materials according to the formula, and inspecting the raw materials according to the national standard, they can be put into use only after they are qualified;

[0050] Step 2: Based on the principle of mixing 1 ton in a single batch, weigh all the raw materials according to th...

Embodiment 2

[0054] A quick-drying explosion-proof castable, its components and content are:

[0055] Component Particle Size Content (weight ratio)

[0056] 80 Bauxite 8-5mm 10%

[0057] 5-3mm 10%

[0058] 3-1mm 10%

[0059] Focused gem 1-0mm 12%

[0060] Mullite 8-5mm 5%

[0061] 5-3mm 8%

[0062] 3-1mm 10%

[0063] 85 bauxite 200 mesh 14.3%

[0064] Kyanite 200 mesh 5%

[0065] White corundum 200 mesh 5%

[0066] Aluminum 70 pure calcium aluminate cement 200 mesh 6%

[0067] Silica powder 3000 mesh 4%

[0068] Lithium carbonate 200 mesh 0.03%

[0069] Metal aluminum powder 200 mesh 0.02%

[0070] Explosion-proof fiber 0.06%

[0071] Sodium tripolyphosphate 0.14%

[0072] The production process of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0074] A quick-drying explosion-proof castable, its components and content are:

[0075] Component Particle Size Content (weight ratio)

[0076] Mullite 8-5mm 12%

[0077] 5-3mm 18%

[0078] 3-1mm 20%

[0079] 1-0mm 15%

[0080] 88 bauxite 200 mesh 19.3%

[0081] Kyanite 200 mesh 4%

[0082] Aluminum 75 pure calcium aluminate cement 200 mesh 6%

[0083] Silica powder 3000 mesh 5%

[0084] Anhydrous lithium chloride 200 mesh 0.02%

[0085] Metal aluminum powder 200 mesh 0.03%

[0086] Explosion-proof fiber 0.1%

[0087] Sodium tripolyphosphate 0.15%

[0088] The manufacturing method of this embodiment is the same as that of the embodiment.

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Abstract

The invention discloses a castable used for an industrial furnace lining and a producing process thereof, and particularly relates to a quick-drying explosion-proof castable used for an industrial furnace lining and a producing process thereof. The producing process comprises four steps of raw material purchasing and testing, burdening, mixing and packaging. The producing process of the invention has the advantages of realizing quick-drying (rapid hardening) and fast stripping of the castable, and rapid baking without burst or explosion. With greatly shortened construction time and baking time, production pace is speeded up, a large quantity of energy is saved, emission of carbon dioxide and nitrogen oxide is significantly reduced and economic and social benefits are prominent.

Description

technical field [0001] The invention relates to a quick-drying explosion-proof castable and a production process thereof, belonging to the technical field of refractory materials. Background technique [0002] Low cement castables (LCC) and ultra-low cement castables (ULCC) are used in heating furnaces, soaking furnaces and roasting furnaces due to their advantages of high strength, high wear resistance, high thermal shock resistance and excellent erosion resistance. , Lime kiln, rotary kiln, gas generator, heat treatment furnace and other industrial kilns are widely used. [0003] During the long-term operation of these industrial kilns, the refractory lining will be damaged due to air scour, flue gas corrosion and mechanical wear. In order to improve the comprehensive service life of the furnace lining, it is necessary to stop production in good time and use castables to carry out minor repairs, medium repairs and major repairs on the furnace lining. When the damage is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B7/32C04B22/12C04B22/10C04B22/04
Inventor 马军强孙顺
Owner LUOYANG KECHUANG NEW MATERIAL CO LTD
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