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Ore heating furnace

A submerged arc furnace and furnace cover technology, applied in the field of smelting, can solve the problems of heat loss, safety reduction, lack of heat insulation materials in the furnace body, etc., to improve thermal efficiency, ensure safe and reliable operation, and reduce heat dissipation and radiation on the surface of the furnace body The effect of heat dissipation

Inactive Publication Date: 2012-08-15
SUZHOU LOW CARBON ENERGY CONSERVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high internal temperature of the submerged arc furnace body and the lack of insulation protection of the furnace body, the surface temperature of the furnace body is high. In order to reduce the surface temperature of the furnace body and improve the working environment, it is usually necessary to carry out water cooling on the periphery of the submerged arc furnace. , which reduces the safety of the equipment, and most of the current submerged arc furnaces adopt a separate structure of the furnace cover and the furnace body, and a large amount of heat is taken away from the flue gas in the middle gap, and the furnace cover is water-cooled or protected by heavy castables. heat loss

Method used

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Examples

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Effect test

Embodiment 1

[0015] Such as figure 1 As shown, the present embodiment provides a submerged arc furnace, the body of the submerged arc furnace is composed of a furnace cover 1, a furnace door 2, a launder 3, a furnace wall 4 and a furnace bottom 5, wherein the furnace cover 1 and the furnace door 2 The inner lining is made of aluminum oxide hollow ball castables; the launder 3 is made of graphite, the furnace wall 4 is made of corundum fired bricks, and the furnace bottom 5 is made of corundum castables.

[0016] This embodiment is suitable for smelting white corundum.

Embodiment 2

[0018] Such as figure 2 As shown, the present embodiment provides a submerged arc furnace, the body of the submerged arc furnace is composed of a furnace cover 1, a furnace door 2, a launder 3, a furnace wall 4 and a furnace bottom 5, wherein the furnace cover 1 and the furnace door 2 The inner lining is made of corundum hollow ball castable; the launder 3 is made of graphite, the furnace wall 4 is made of corundum fired bricks, and the furnace bottom 5 is composed of a light heat insulation layer 51 and a dense working layer 52. The dense working layer 52 is casted with corundum castable, and the light heat insulation layer 51 is casted with corundum hollow ball castable.

[0019] This embodiment is suitable for smelting brown corundum.

Embodiment 3

[0021] Such as figure 2 As shown, the present embodiment provides a submerged arc furnace, the body of the submerged arc furnace is composed of a furnace cover 1, a furnace door 2, a launder 3, a furnace wall 4 and a furnace bottom 5, wherein the furnace cover 1 and the furnace door 2 The inner lining is made of zirconia hollow ball castable; the launder 3 is made of water-cooled steel plate, the outer side of the steel shell of the furnace wall 4 adopts an external spray cooling structure, and the furnace bottom 5 is composed of a light heat insulation layer 51 and a dense working layer 52, the dense working layer 52 is made of zircon sand ramming material, and the light heat insulation layer 51 is casted from zirconia hollow ball castable material.

[0022] This embodiment is suitable for smelting zirconia.

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Abstract

The invention aims to provide an ore heating furnace which has good temperature preservation and heat insulation performances and high heat utilization ratio. A furnace body of the ore heating furnace provided by the invention consists of a furnace cover, a furnace door, a flow groove, a furnace wall and a furnace base. The ore heating furnace is characterized in that an inner lining of the furnace cover is prepared from light-weight heat insulation pouring materials so as to improve the energy-saving effect. After the furnace body and the furnace cover of the ore heating furnace prepared by the invention are designed in a full-sealed mode by adopting hollow-ball light-weight heat insulation materials, the furnace body surface heat dissipation and radiation heat dissipation are lowered, the heat efficiency of the ore heating furnace is improved, the ore heating furnace can be adapted to the smelting of multiple materials, and meanwhile the safe and reliable operation of the device can be ensured.

Description

technical field [0001] The invention belongs to the technical field of smelting, and in particular relates to a submerged arc furnace which can be used for smelting various nonmetals. Background technique [0002] The submerged arc furnace is a thermal equipment for melting ores and metals by means of electric current passing through the electrodes to generate electric arcs between each other, and by means of the resistance of the electrodes in contact with the slag and the resistance of the slag itself to generate heat energy. Submerged arc furnace is mainly composed of furnace body, short net, furnace body tilting device, furnace cover lifting, rotating device, electrode pressing and lifting device, submerged arc furnace transformer, various electrical equipment and charging system, hydraulic system, dust removal system, Water cooling system, pneumatic system and other auxiliary systems. When working, the lower end of the electrode is buried in the charge, and electric en...

Claims

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Application Information

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IPC IPC(8): F27B3/14
Inventor 王家邦
Owner SUZHOU LOW CARBON ENERGY CONSERVATION TECH
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