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Device for preheating and conveying scrap steel

A conveying device and scrap steel technology, applied in the metallurgical field, can solve the problems of increasing equipment wear and increasing the transmission power of the mechanism, and achieve the effects of small equipment vibration, simple maintenance and production, and good air permeability

Inactive Publication Date: 2010-09-08
CISDI ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, consteel is horizontally conveyed, and the movement of scrap steel must overcome the friction force during the reciprocating movement of scrap steel in the groove, which increases the transmission power of the mechanism on the one hand, and increases the wear and tear of the equipment on the other hand

Method used

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  • Device for preheating and conveying scrap steel
  • Device for preheating and conveying scrap steel
  • Device for preheating and conveying scrap steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 as figure 1 As shown, the conveying trough 1 is installed obliquely, and the lower end extends into the electric furnace A. The conveying trough is covered with a smoke guide 2. The movement gap between the two is kept sealed by a dynamic sealing device 2b to prevent cold air from being sucked in. The tail of the smoke guide 2 There is an adjustable smoke port 2a; the flue gas B fills the entire electric furnace A and the cavity channel formed by the scrap steel preheating conveying chute 1 and the smoke guide hood 2, and the bottom of the conveying trough 1 adopts a stepped staggered superposition structure from bottom to high, The joint gap between every two layers is designed as the smoke outlet 1a at the bottom of the tank, and the lower layer is connected with the bottom exhaust pipe 1b, and several smoke outlets 1a at the bottom of the tank can be set in the whole scrap steel preheating conveying chute. Steel scrap C is hoisted into several bottom-openin...

Embodiment 2

[0039] Embodiment 2: what is different from Embodiment 1 is the structure of the delivery trough, such as Figure 5 As shown, the inclined conveying trough 1 adopts the embodiment of suction on both sides, the two side walls are double-layered, and the inner side wall is separated from the bottom of the tank to form a side-inclined smoking port 1a.

[0040] It should be pointed out that the above-mentioned conveying trough 1, smoke guide 2 and other related parts that are in contact with high-temperature flue gas B can be made into a water-cooled structure to withstand high temperatures, and some components can also be coated with heat-insulating and refractory materials to increase the life of the components and reduce the discharge. The temperature loss of the flue gas and improve the thermal efficiency of the subsequent system.

[0041] It is also necessary to set some sensors for this device to cooperate with the production process and improve the working conditions of the...

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Abstract

The invention discloses a device for preheating and conveying scrap steel, which comprises a conveying groove (1) obliquely formed relatively to the horizontal plane. A fume guide hood (2) is arranged on the conveying groove (1); the lower end of the conveying groove (1) extends into an electric furnace (A) through an opening on a side wall of the electric furnace (A); a bottom-open long distributing groove (D) is formed above the other end of the conveying groove (1) and is installed above a material receiving section of the conveying groove (1) through a lifting device (Q); the bottom-open long distributing groove (D) is in a top view projection of the material receiving section of the conveying groove (1) along a longitudinal direction; the scrap steel is longitudinally arranged at the groove bottom of the material receiving section of the conveying groove (1) in the form of strips; and the scrap steel (C) is fed into the electric furnace (A) through the conveying groove (1). The device has small length, high heat exchanging efficiency, low lifting operation rate, small wear and maintenance, energy conservation and environment friendliness, lowers investment and operation costs and uses new energy-saving and environment-friendly technology with popularization value on smelting processes, such as the electric furnace and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to a short-flow electric furnace scrap preheating and continuous feeding device. Background technique [0002] Energy saving, consumption reduction, and environmental protection in electric furnace steelmaking have always been one of the core technologies in the development of global electric furnace steelmaking technology. There have been many design schemes at home and abroad in the past 20 years, but due to its technical difficulty, only a small amount of technology has been put into practical use at present. Its typical representative is CONSTEEL (US Patent No. US5400358) technology based on continuous vibration feeding. This kind of horizontal continuous feeding technology can realize stable arc smelting in electric furnace, which is environmentally friendly and reduces electrode consumption, which can greatly reduce the production process cost of electric furnace. However, fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D3/00F27D13/00
Inventor 黄其明杨宁川廖远刘春霆刘向东
Owner CISDI ENG CO LTD
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