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Long-life iron runner quick-dry castable and production method thereof

A long-life, castable technology, used in ceramic products, other household appliances, applications, etc., can solve problems such as the bulk density should not be too large, the material affects the thermal insulation effect, etc., to improve air permeability, improve explosion-proof performance, prolong The effect of the service life

Inactive Publication Date: 2019-09-24
武汉市科达耐火有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a thermal insulation material, the iron trench castable should not have too much bulk density, otherwise it will affect the thermal insulation effect due to the increase of thermal conductivity of the material

Method used

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  • Long-life iron runner quick-dry castable and production method thereof
  • Long-life iron runner quick-dry castable and production method thereof
  • Long-life iron runner quick-dry castable and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: A long-life iron ditch quick-drying castable, including the components shown in Table 1 (1 part by weight=1g or 1kg). This embodiment takes 1 part by weight=1g as an example. Among them, the particle size range of fused corundum is 0-8mm, the particle size range of alumina micropowder is 0-2μm, and the particle size range of tabular corundum powder is 5μm. The particle size range of metal silicon powder is 0-0.044mm, and the particle size range of silicon carbide is 0-0.074mm. Metal aluminum powder is compounded by 0.154mm aluminum powder and 0.044mm aluminum powder with a weight ratio of 1:1. The carbon source is spherical pitch with a particle size of 0.1-0.3 mm. The water reducer is a polycarboxylate water reducer.

[0034] Each component content table of table 1 embodiment 1-5

[0035]

[0036]

[0037] The method for preparing the long-life iron ditch quick-drying castable comprises the following steps:

[0038] S1. Weigh each component with t...

Embodiment 2

[0040] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the contents of each component are as shown in Table 1.

Embodiment 3

[0041] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the contents of each component are as shown in Table 1.

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Abstract

The invention discloses a long-life iron runner castable and a production method thereof. The long-life iron runner castable comprises the following components: 900-1100 parts of fused corundum, 260-500 parts of silicon carbide micro-powder, 90-100 parts of alumina micro-powder, 100-110 parts of tabular corundum micro-powder, 60-80 parts of aluminate cement, 2-4 parts of aluminum metal powder, 2-6 parts of an efficient water reducer and 60-80 parts of a carbon source. The production method comprises the steps of firstly, mixing and stirring the alumina micro-powder, the tabular corundum micro-powder, silicon metal powder, the aluminum metal powder, the efficient water reducer and silica fume for 20-30 minutes to produce a premix; and then mixing and stirring the premix, the fused corundum, the silicon carbide micro-powder, the aluminate cement and ball pitch for 8-12 minutes to produce the iron runner castable used for a blast furnace. The long-life iron runner castable has the advantages that the thermal conductivity is low, the explosion-proof performance is excellent, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of preparation of refractory materials, in particular to a long-life iron ditch quick-drying castable and a preparation method thereof. Background technique [0002] Blast furnace tap trough castable is a commonly used lining material for the lining of the tap trough. The tap trough is the flow channel of molten iron. During use, it is washed by molten iron, chemically eroded by iron slag, oxidized by air, and temperature fluctuations. thermal shock stress etc. Therefore, the ratio of refractory castables selected must meet the above characteristics. Now most of them use high-aluminum silicon carbide carbonaceous castables or corundum-based silicon carbide carbonaceous castables, referred to as ASC castables. The current iron trough castables have defects in explosion-proof and service life. Generally, the castables with long service life do not have the performance of rapid iron tapping, and the castables ...

Claims

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Application Information

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IPC IPC(8): C04B35/103C04B35/622C04B38/02C21B7/14
CPCC04B35/103C04B35/622C04B38/02C04B2235/3222C04B2235/3418C04B2235/3826C04B2235/402C04B2235/428C04B2235/48C04B2235/5427C04B2235/5436C04B2235/77C04B2235/96C04B2235/9607C21B7/14C04B38/0074
Inventor 周胜蒋宇雄
Owner 武汉市科达耐火有限责任公司
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