Pouring material for forsterite tundish slag stop wall and production process thereof

A forsterite and production process technology, applied in the field of slag retaining weir castable and its production process, and slag retaining wall for continuous casting tundish, can solve the problems of enterprise benefit impact, poor corrosion resistance and erosion resistance, fracture and other problems, and achieve The effect of good burst resistance, formulation cost reduction, and good workability

Active Publication Date: 2010-12-15
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most tundish slag retaining walls and slag retaining weirs use magnesia or bauxite as the main raw material, and the service life is synchronized with the working lining of the tundish. However, with the rise of raw material prices and changes in the steel situation, the product profit margin is Gradually shrinking, it has a certain impact on the efficiency of the enterprise
[0005] 2. The performance needs to be improved
Through market research, it is found that the current existing slag retaining walls and slag retaining weirs have cracks during maintenance, fractures during transportation and hoisting, and poor erosion resistance and erosion performance during use.

Method used

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  • Pouring material for forsterite tundish slag stop wall and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Raw materials: 50 kg of forsterite, 40 kg of magnesia, 5 kg of corundum powder, SiO 2 Micro powder 3.5 kg, sodium tripolyphosphate 0.5 kg, steel fiber 1 kg, organic fiber 0.1 kg. The weight percentage of the above-mentioned forsterite MgO is 43%-50%, the particle size is ≤8mm, and the particle size is 8mm-5mm, 5mm-3mm, 3mm-1mm, and 1mm-0mm respectively, and the weight percentage of forsterite is 35% %, 30%, 35%, 0%. The particle size of the magnesia is ≤1mm, the particle sizes are respectively in two gradations of 1mm-0mm and ≤0.088mm, and the weight percentages of the magnesia are 50% and 50% respectively. SiO 2 The particle size of fine powder is 5μm; the length of organic fiber is ≤3mm; the length of steel fiber is 20mm~30mm.

[0025] Preparation Process:

[0026] Weigh the above raw materials according to the formula, first add the aggregate and mix in the forced mixer evenly, then add fine powder and compound additives and stir for 2 to 3 minutes, when the mate...

Embodiment 2

[0028] Raw materials: 70 kg of forsterite, 15 kg of magnesia, 10 kg of corundum powder, SiO 2 1 kg of fine powder, 0.2 kg of sodium tripolyphosphate, 2.8 kg of SR-71 cement, 1 kg of steel fiber, and 0.1 kg of organic fiber. The weight percentage of the above-mentioned forsterite MgO is 43%-50%, the particle size is ≤8mm, and the particle size is respectively 8mm-5mm, 5mm-3mm, 3mm-1mm, and 1mm-0mm. %, 20%, 25%, 30%. The particle size of the magnesia is ≤1mm, the particle sizes are respectively in two gradations of 1mm-0mm and ≤0.088mm, and the weight percentages of the magnesia are 0% and 100% respectively. SiO 2 The particle size of fine powder is 5μm; the length of organic fiber is ≤3mm; the length of steel fiber is 20mm~30mm.

[0029] Preparation Process:

[0030] Weigh the above raw materials according to the formula, first add the aggregate and mix in the forced mixer evenly, then add fine powder and compound additives and stir for 2 to 3 minutes, when the materials ar...

Embodiment 3

[0032] Raw materials: 85 kg of magnesia, 5 kg of forsterite, 15 kg of corundum powder, SiO 2 Micro powder 2.5 kg, sodium hexametaphosphate 0.5 kg, steel fiber 1 kg, organic fiber 0.1 kg. The weight percentage of the above-mentioned forsterite MgO is 43%-50%, the particle size is 1mm-0mm, and the weight percentage of the forsterite is 100%, the particle size of the above-mentioned magnesia is ≤1mm, and the particle size is 8mm-5mm, 5mm-3mm, and 3mm respectively ~1mm, 1mm~0mm, ≤0.088mm five gradations, accounting for 20%, 20%, 20%, 20% and 20% of the weight of magnesia respectively. SiO 2 The particle size of fine powder is 5μm; the length of organic fiber is ≤3mm; the length of steel fiber is 20mm~30mm.

[0033] Preparation Process:

[0034] Weigh the above raw materials according to the formula, first add the aggregate and mix in the forced mixer evenly, then add fine powder and compound additives and stir for 2 to 3 minutes, when the materials are evenly mixed, add water a...

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Abstract

The invention discloses a pouring material for a forsterite tundish slag stop wall and a production process thereof. The pouring material is prepared from the following raw materials in part by weight: 5 to 70 parts of forsterite, 15 to 85 parts of magnesium sand, 5 to 15 parts of corundum powder, 3 to 5 parts of composite additive, 0.1 part of organic fiber and 1 part of steel fiber. The production process comprises the following steps of: adding aggregates in the raw materials into a stirrer and mixing and stirring the aggregates uniformly, then adding the fine powder and the composite additive into the mixed aggregates and stirring the mixture for 2 to 3 minutes, adding water into the mixture and stirring the mixture for 2 to 3 minutes when all the materials are mixed and stirred uniformly, and performing discharge, vibration molding, curing, drying and packing. The formula cost of the product is reduced by adopting combined action of the forsterite and the magnesium sand; and the construction performance and the use performance of the product are ensured at the same time of improving the strength of the product by adopting the composite additive, organic fiber, steel fiber andthe like with good performance.

Description

technical field [0001] The invention relates to an unshaped refractory material and a production process thereof, in particular to a slag retaining wall for a continuous casting tundish in a steelmaking process, a slag retaining weir castable and a production process thereof. Background technique [0002] With the development of iron and steel industry, tundish metallurgical technology has been paid more and more attention by metallurgical workers, especially tundish slag retaining wall, slag retaining weir and other technologies have been widely used. Because the flow of molten steel in the tundish is uneven, some places are fast, some places are slow, especially there is an inactive stagnant zone of molten steel in the bottom area of ​​the tundish, so it is difficult for inclusions to float up. In order to fully and effectively utilize the volume of the tundish and promote the floating of inclusions, the measures taken are to set up a slag retaining wall or weir in the tun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 郑吉红田先明高永生刘毅王志强姚亚双
Owner WUGANG REFRACTORY CO LTD
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