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Knotting method of vanadium iron ingot mold

An ingot mold and ferrovanadium technology, which is applied in the field of knotting technology, can solve the problems such as the great influence on the smelting yield and the difficulty of cleaning the alloy layer of vanadium discus, so as to improve the quality of knotting, reduce the processing cost and increase the recovery rate Effect

Active Publication Date: 2017-07-07
攀钢集团西昌钒制品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large gap between magnesia particles in the knotted layer composed of magnesia and brine, ferrovanadium is easy to penetrate into the knotted layer during the cooling process in the ingot mold to form infiltrated alloy, which has a great influence on the smelting yield; at the same time, because ferrovanadium Adhesion to the knotting layer, the infiltration alloy layer outside the vanadium discus is difficult to clean when demolding

Method used

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  • Knotting method of vanadium iron ingot mold
  • Knotting method of vanadium iron ingot mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. First use the knotting material composed of magnesia and brine to knot a refractory layer with a thickness of 120-160mm on the inner wall of the ingot mold.

[0026] 2. After the refractory layer is knotted, use magnesium fire mud brine slurry to brush the entire inner wall of the ingot mold, and the coating thickness is 3-5mm.

[0027] 3. After painting, use gas to bake, first use a small fire with a temperature of 250°C to 300°C for 3 hours, and then bake with a temperature of 800°C to 850°C for 7 hours.

Embodiment 2

[0029] 1. First use the knotting material composed of magnesia and brine to knot a refractory layer with a thickness of 120-160mm on the inner wall of the ingot mold.

[0030] 2. After the refractory layer is knotted, use magnesium fire mud brine slurry to brush the entire inner wall of the ingot mold, and the coating thickness is 3-5mm.

[0031] 3. After painting, use gas to bake, first use a low fire at 250°C to 300°C for 4 hours, and then bake at a temperature of 800°C to 850°C for 11 hours.

Embodiment 3

[0033] 1. First use the knotting material composed of magnesia and brine to knot a refractory layer with a thickness of 120-160mm on the inner wall of the ingot mold.

[0034] 2. After the refractory layer is knotted, use magnesium fire mud brine slurry to brush the entire inner wall of the ingot mold, and the coating thickness is 3-5mm.

[0035] 3. After painting, use coal gas to bake, first use a low fire with a temperature of 250°C to 300°C for 5 hours, and then bake with a temperature of 800°C to 850°C for 15 hours.

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Abstract

The invention discloses a knotting method for a ferrovanadium ingot mould. According to the knotting method, a compact fireproof layer can be formed on the inner wall of the ingot mould, the amount of ferrovanadium permeating into the fireproof layer in the cooling process of the ingot mould is lowered, and the amount of generated penetrated alloy is lowered. The knotting method comprises the steps that 1, the fireproof layer is formed on the ferrovanadium ingot mould through knotting materials in a knotted manner; 2, after knotting of the fireproof layer is finished, the knotting materials are brushed on the fireproof layer on the inner wall of the ingot mould till the whole inner wall is brushed with the knotting materials; and 3, the knotting materials brushed on the fireproof layer are baked till the knotting materials are dried. According to the knotting method, the knotting quality of the ingot mould can be improved, and the penetrated alloy is greatly reduced; and the ferrovanadium smelting recovery rate is increased, and the ferrovanadium processing cost is reduced.

Description

technical field [0001] The invention relates to a knotting process, in particular to a knotting method for an iron-vanadium ingot mould. Background technique [0002] Known: After the ferrovanadium is smelted in the tilting furnace, the ferrovanadium should be poured into the ingot mold for cooling. Knotting material is used on the inner wall of the ingot mold, and a layer of refractory layer is formed by knotting. Common ingot molds use a knotting material composed of magnesia and brine to form a refractory layer on the inner wall of the ingot mold. Due to the large gap between magnesia particles in the knotted layer composed of magnesia and brine, ferrovanadium is easy to penetrate into the knotted layer during the cooling process in the ingot mold to form infiltrated alloy, which has a great impact on the smelting yield; at the same time, because ferrovanadium Adhesion with the knotted layer, the infiltration alloy layer outside the vanadium discus is difficult to clean...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D7/06
Inventor 梁彬张巍杨雄杨志
Owner 攀钢集团西昌钒制品科技有限公司
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