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Castable for aluminum melting furnace lining and preparation method and using method of castable

An aluminum melting furnace and castable technology, applied in the field of refractory development, can solve the problems of low service life, high production cost, easy loosening, etc., and achieve the effects of improving service life, stable thermal shock performance and simple operation

Inactive Publication Date: 2019-02-15
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the lining of the existing aluminum melting furnace is easy to loosen and fall off due to the brickwork method, the service life is low, and the production cost is high.

Method used

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  • Castable for aluminum melting furnace lining and preparation method and using method of castable
  • Castable for aluminum melting furnace lining and preparation method and using method of castable
  • Castable for aluminum melting furnace lining and preparation method and using method of castable

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preparation example Construction

[0030] The present invention also provides a method for preparing the castable for the furnace lining of the aluminum melting furnace, comprising the following steps:

[0031] Weigh the raw materials according to the weight ratio, add them to the mixer according to the order of the particle size of the raw materials from large to small, and the stirring time is more than 5min / filling to obtain the castable for the furnace lining of the aluminum melting furnace.

[0032] The present invention also provides a method for using the castable for the lining of the aluminum melting furnace, comprising the following steps:

[0033] a. Remove the bricks of the aluminum melting furnace as a whole, clean up the sundries on the inner wall of the steel mold cover, drill out the air holes with a horizontal and vertical spacing of 40cm and a diameter of 8cm evenly distributed on the steel mold cover of the aluminum melting furnace, and then drill the air holes on the inner wall of the steel m...

Embodiment 1

[0037] Embodiment 1 Preparation of aluminum melting furnace lining castable of the present invention, laboratory test and physical and chemical performance detection

[0038] According to the theoretical formula design of aluminum melting furnace lining castables, small sample tests and physical and chemical performance tests were carried out in the laboratory. The test design castable formula consists of: fused brown corundum 68.0%, bauxite powder 20.0%, α-alumina Micropowder 4.0%, calcium aluminate cement 3.0%, super silica micropowder 4.0%, stainless steel fiber 1.5%, superplasticizer 0.25%, explosion-proof fiber 0.05%.

[0039] The specific operation steps are:

[0040] a. Preparation of castable

[0041] After weighing the raw materials, add them to the mixer in order of particle size from large to small, and the stirring time is ≥5min / fill to obtain castables for aluminum melting furnace lining; and test the chemical composition of the castables.

[0042] b. Mix the pr...

Embodiment 2

[0047]Example 2 Preparation of aluminum melting furnace lining castable of the present invention, laboratory test and physical and chemical performance detection

[0048] According to the theoretical formula design of aluminum melting furnace lining castables, small sample tests and physical and chemical performance tests were carried out in the laboratory. The test design castable formula consists of: fused brown corundum 70.0%, bauxite powder 18.0%, α-alumina Micro powder 6.0%, calcium aluminate cement 3.0%, super silica micro powder 3.0%, stainless steel fiber 1.0%, superplasticizer 0.3%, explosion-proof fiber 0.03%.

[0049] The specific operation steps are:

[0050] a. Preparation of castable

[0051] After weighing the raw materials, add them to the mixer in order of particle size from large to small, and the stirring time is ≥5min / fill to obtain castables for aluminum melting furnace lining; and test the chemical composition of the castables.

[0052] b. Mix the prepa...

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Abstract

The invention belongs to the technical field of refractory development, and particularly relates to a castable for an aluminum melting furnace lining and a preparation method and a using method of thecastable. In allusion to the problems that the existing aluminum melting furnace lining is easy to loosen and fall off, short in service life and high in production cost due to use of bricks, the invention provides the castable for the aluminum melting furnace lining. The castable comprises a component A and a component B, wherein in percent by weight, the component A comprises 68-70% of fused brown corundum, 18-20% of bauxite powder, 4-6% of alpha-aluminum oxide micropowder, 2-4% of calcium aluminate cement and 2-4% of super silicon micropowder; and counted by the component A, the componentB comprises 1-2wt% of stainless steel fiber, 0.2-0.4wt% of a high-efficiency water reducing agent and 0.03-0.05wt% of explosion-proof fiber. The invention further provides the preparation method and the using method of the castable. The furnace lining produced from the castable has high compactness, high strength, high toughness, impact resistance, stable thermal shock performance, long service life and obvious economic benefits.

Description

technical field [0001] The invention belongs to the technical field of refractory material development, and in particular relates to a castable for furnace lining of an aluminum melting furnace and a preparation and use method thereof. Background technique [0002] At present, most of the domestic aluminum melting furnace manufacturers design and produce the aluminum melting furnace lining for the production of melting aluminum ingots, which adopt the combination method of segmental masonry of high alumina bricks on the inner wall of the steel mold, and segmental butt joint installation on site. During the production process of the aluminum melting furnace, since the production raw materials (20Kg / piece of aluminum ingot, 500Kg / bucket for a single addition) are added from the top by a bucket elevator, the lining bricks of the furnace are frequently subjected to strong impacts from aluminum ingots, high temperature and aluminum alloys. Due to the influence of liquid corrosion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3217C04B2235/5216
Inventor 陈桂卫陈涛黎光正毛朋张远春
Owner PANZHIHUA GANGCHENG GROUP
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