Aluminum melting furnace capable of improving service life and thermal efficiency

An aluminum smelting furnace and thermal efficiency technology, applied in the field of aluminum smelting furnaces, can solve the problems of falling bricks on the top of the furnace, aluminizing, and large heat loss of the furnace body.

Inactive Publication Date: 2009-04-22
巩义市嘉丰耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the problems of traditional brick lining aluminization, slag hanging, brick falling off the top of the furnace, the lining refractory material is not resistant

Method used

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  • Aluminum melting furnace capable of improving service life and thermal efficiency
  • Aluminum melting furnace capable of improving service life and thermal efficiency
  • Aluminum melting furnace capable of improving service life and thermal efficiency

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1 (15t aluminum melting furnace)

[0028] a. Choose to use high-aluminum refractory castable with SiC added as the working layer of the furnace lining (also called castable working layer); the addition amount of SiC is 10% of the weight of the refractory castable;

[0029] b. The surface temperature of the furnace shell is less than 30℃, and the size of the furnace wall composite lining is determined to be refractory ceramic fiber + clay lightweight heat insulation refractory brick + refractory castable = 20mm+114mm+230mm. The thickness of the furnace wall lining is larger than that of the original refractory brick. The lining is reduced by 115mm;

[0030] c. The furnace roof adopts flat-top hanging type integral casting, and a layer of 20mm thick refractory fiber is spread on the casting material, and the heating element is changed from using expensive nickel-chromium tape to silicon carbide rod;

[0031] d. Carry out construction, maintenance and baking in strict ...

Example Embodiment

[0036] Example 2 (25t aluminum melting furnace)

[0037] a, choose to use added Si 3 N 4 +β-Sialon's corundum refractory castable is used as the working layer of the furnace lining (also called the castable working layer); Si 3 N 4 The addition amount of β-Sialon is 5% of the weight of the refractory castable (Si 3 N 4 ) 3% (β-Sialon);

[0038] b. The surface temperature of the furnace shell is less than 30℃, and the size of the furnace wall composite lining is determined to be refractory ceramic fiber + clay lightweight heat insulating refractory brick + refractory castable = 40mm+180mm+230mm. The thickness of the furnace wall lining is larger than that of the original refractory brick. The lining is thinned by 65mm;

[0039] c. The furnace roof adopts a flat-top hanging type integral casting, a layer of 40mm thick refractory fiber is spread on the casting material, and the heating element is replaced with silicon carbon rod;

[0040] d. Carry out construction, maintenance and ba...

Example Embodiment

[0045] Example 3 (45t aluminum melting furnace)

[0046] a, choose to use added Si 3 N 4 Mullite refractory castable as the working layer of the furnace lining (also called the castable working layer); Si 3 N 4 The addition amount is 6% of the weight of the refractory castable;

[0047] b. The surface temperature of the furnace shell is less than 30℃, and the size of the furnace wall composite lining is determined to be refractory ceramic fiber + clay lightweight heat insulating refractory brick + refractory castable = 40mm+180mm+230mm. The thickness of the furnace wall lining is larger than that of the original refractory brick. The lining is thinned by 65mm;

[0048] c. The furnace roof adopts a flat-top hanging type integral casting, a layer of 40mm thick refractory fiber is spread on the casting material, and the heating element is replaced with silicon carbon rod;

[0049] d. Carry out construction, maintenance and baking in strict accordance with the construction process of ...

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Abstract

An aluminum melting furnace capable of increasing service life and heat efficiency comprises a shell body and a lining layer covered on the inner wall of the shell body. The furnace is characterized in that work layers in the lining layer, namely the work layers of the furnace bottom, the furnace wall and the furnace top, are integrally cast from castable refractory and constructed; wherein, the furnace top is in a flattopping structure as well as the integral cast structure with hanging anchorage bricks, the furnace wall is in a composite structure belonging to a straight vertical surface structure. Being fully cast, the lining of the aluminum melting furnace has no seam, smooth surface, high integral strength, good air tightness and stable structure in use, and can greatly reduce radiation loss and improve the heat efficiency; with nonoxides used in the lining casting material, the material does not shrink, crack, aluminize, uneasily adhere with slag and is not eroded by aluminum alloy melt with high thermal shock stability in the state of smelting operation. Compared with the service life of a traditional brick structure, the service life is improved more than 3 times.

Description

technical field [0001] The invention relates to the refractory lining technology of industrial furnaces, in particular to an aluminum smelting furnace which can improve service life and thermal efficiency. Background technique [0002] Aluminum smelting furnace generally refers to various thermal furnace equipment used for primary aluminum casting, aluminum-based alloy smelting and solid aluminum melting, mainly including mixing furnaces of various capacities, static furnaces, holding furnaces, melting furnaces, etc. At present, most of the domestic aluminum smelting furnace linings are made of refractory bricks and diatomite insulation bricks. But this kind of furnace lining structure has the following disadvantages: ①Using mud masonry to build refractory bricks, the existence of brick joints greatly affects the integrity and airtightness of the furnace lining. After the smelting furnace was put into use, the refractory bricks and refractory mud produced inconsistent perma...

Claims

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Application Information

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IPC IPC(8): F27D1/10F27D1/00
Inventor 赵凌云谢朝晖
Owner 巩义市嘉丰耐火材料有限公司
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