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Ladle bottom castable with aluminum chromium slag as main material and preparation method thereof

A technology of aluminum chromium slag and bottom pouring, applied in the field of refractory materials, can solve the problems of lack of high-quality industrial raw materials, rising prices, high production costs, etc., achieve good thermal shock stability and corrosion resistance, save resources, and improve use The effect of longevity

Active Publication Date: 2022-06-21
SHANGHAI LIER REFRACTORY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the past few decades, my country's industrialization has been based on the consumption of natural resources as the main development method, coupled with the unreasonable waste of resources, this has resulted in an increasing shortage of high-quality industrial raw materials, rising prices, high production costs, and difficult development. situation

Method used

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  • Ladle bottom castable with aluminum chromium slag as main material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A ladle bottom castable with aluminum-chromium slag as the main material is made from raw materials including the following parts by weight: 58 parts of aluminum-chromium slag (13 parts of aluminum-chromium slag with a particle size of 15-8mm, and a particle size of 8-5mm 14 parts of aluminum-chromium slag, 15 parts of aluminum-chromium slag with a particle size of 5-3mm, 16 parts of aluminum-chromium slag with a particle size of 3-1mm), 26.7 parts of white corundum (7 parts of white corundum with a particle size of 1-0mm, and a particle size of 13 parts of 120~200 mesh white corundum, 6.7 parts of 200~325 mesh white corundum), 4 parts of fused magnesia (1 part of fused magnesia with a particle size of 1~0mm, 120~200 mesh particle size) fused magnesia (3 parts), 5 parts of pure calcium aluminate cement with a particle size of 200-325 mesh, 6 parts of α-alumina fine powder (3 parts of α-alumina fine powder with a particle size of 3 microns, α-alumina fine powder with a pa...

Embodiment 2

[0030] A ladle bottom castable with aluminum-chromium slag as the main material, made of raw materials including the following parts by weight: 56 parts of aluminum-chromium slag (12 parts of aluminum-chromium slag with a particle size of 15-8mm, 14 parts of aluminum-chromium slag, 15 parts of aluminum-chromium slag with a particle size of 5-3mm, 15 parts of aluminum-chromium slag with a particle size of 3-1mm), 28.7 parts of white corundum (10 parts of white corundum with a particle size of 1-0mm, and a particle size of 11.7 parts of 120-200 mesh white corundum, 7 parts of 200-325 mesh white corundum), 3 parts of fused magnesia (1 part of fused magnesia with a particle size of 1-0mm, 120-200 mesh particle size) 2 parts of fused magnesia), 5 parts of pure calcium aluminate cement with a particle size of 200-325 mesh, 7 parts of α-alumina fine powder (4 parts of α-alumina fine powder with a particle size of 3 microns, α-alumina with a particle size of 1 micron) -3 parts of alum...

Embodiment 3

[0035] A ladle bottom castable with aluminum-chromium slag as the main material, made of raw materials including the following parts by weight: 54 parts of aluminum-chromium slag (12 parts of aluminum-chromium slag with a particle size of 15-8mm, and a particle size of 8-5mm 12 parts of aluminum-chromium slag, 14 parts of aluminum-chromium slag with a particle size of 5-3mm, 16 parts of aluminum-chromium slag with a particle size of 3-1mm), 30.7 parts of white corundum (15 parts of white corundum with a particle size of 1-0mm, and a particle size of 10 parts of 120-200 mesh white corundum, 5.7 parts of 200-325 mesh white corundum), 3.5 parts of fused magnesia (1.5 parts of fused magnesia with a particle size of 1 to 0mm, 120 to 200 parts of particle size) 2 parts of fused magnesia), 7 parts of pure calcium aluminate cement with a particle size of 200-325 mesh, 4.5 parts of α-alumina fine powder (2.5 parts of α-alumina fine powder with a particle size of 3 microns, α-alumina wit...

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Abstract

A ladle bottom castable with aluminum chromium slag as the main material of the present invention is characterized in that it is made of raw materials including the following mass fractions: aluminum chromium slag: 50% to 60%, white corundum: 30% to 40% %, fused magnesia: 2% to 8%, pure calcium aluminate cement: 4% to 10%, α-alumina micropowder: 2% to 11%, sodium tripolyphosphate: 0.06% to 0.1%, metal aluminum Powder: 0.03% to 0.1%, organic fiber: 0.06% to 0.3%. The method of the present invention introduces aluminum-chromium slag into the ladle bottom castable, which can improve the corrosion resistance of the ladle bottom castable to ladle slag, thereby improving the service life of the steel ladle; moreover, the aluminum-chromium slag can be recycled and reused to save resources, and at the same time The production cost can be reduced and better economic benefits can be produced.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, in particular to a ladle bottom castable with aluminum-chromium slag as the main material and a preparation method thereof. Background technique [0002] With the development of the steelmaking process, the requirements for the cleanliness of steel grades are getting stricter and stricter, which puts forward more stringent requirements for the steelmaking process. There are more and more types of refining outside the furnace, and the refining time is getting longer and longer. The turnaround time in the ladle container is prolonged, and the quality of refractory materials is higher. Among them, the service life of the bottom castable used for the working layer of the ladle bottom and the resistance to slag corrosion under high temperature conditions are put forward. [0003] In the past few decades, my country's industrialization has been mainly based on the consumption of natural re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/622B22D41/02
CPCC04B35/66C04B35/62204B22D41/02C04B2235/3217C04B2235/3206C04B2235/3222C04B2235/3208C04B2235/402C04B2235/5212C04B2235/5427C04B2235/5436C04B2235/9607C04B2235/9669
Inventor 马四凯李洪波李维锋魏振国邹新国李勇伟孙佳琛
Owner SHANGHAI LIER REFRACTORY MATERIAL