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Split furnace cover

A split-type, furnace cover technology, which is applied in the direction of furnaces, furnace components, lighting and heating equipment, etc., can solve the problems of increased heat load of furnace cover refractory materials, increased cost of production enterprises, waste of time, etc., and achieves a simple and convenient furnace cover. and convenience, improve efficiency, and shorten the construction period

Inactive Publication Date: 2015-02-11
洛阳双兴电气科技有限公司
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  • Summary
  • Abstract
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Problems solved by technology

Moreover, due to the high power operation, the production capacity of the electric furnace is increased, but at the same time, the heat load of the refractory material of the furnace cover is also significantly increased, so that it is impossible to use improved refractory materials to prolong the service life of the furnace cover. The area is also the weak link of the entire furnace cover, which is most likely to be damaged and has a service life of only about 300 times. However, usually the central area where the electrodes are inserted is integrated with the furnace cover body of the electric furnace and must be replaced as a whole, which not only wastes time, but also increases the cost. production cost

Method used

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Embodiment Construction

[0007] The invention provides a detachable split-type electric furnace cover, which is composed of a furnace cover body and a detachable center core of the furnace cover. The furnace cover body is a chromium corundum prefabricated part added with steel fibers. Three electrode holes are reserved, the furnace cover body and the furnace cover core are sealed with corundum castables, and three devices fixed to the furnace body are evenly distributed on the furnace cover body. When installing, install the furnace cover body first, and then install the furnace cover center core. The corundum castable is used to seal the furnace cover body and the furnace cover center core. When replacing the furnace cover center core, first knock out the corundum castable. Just take out the center core of the furnace cover, which can be replaced directly online, and the surrounding furnace cover body does not need to be replaced until the peripheral furnace cover body is indeed unable to work.

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Abstract

The invention provides a split furnace cover. The split furnace cover is composed of a furnace cover body and a detachable furnace cover center core body, wherein the furnace cover body is a chrome-corundum prefabricated member added with steel fibers; when the furnace cover core body is prefabricated, three electrode holes are reserved, the furnace cover body and the furnace cover core body are sealed by corundum castable, and three devices fixed with a furnace body are uniformly distributed on the furnace cover body. When the split furnace cover is used, the working capacity of all parts of the furnace cover can be maximized by replacing the furnace cover core body, waste is avoided, and continuous operation of smelting is promoted.

Description

technical field [0001] The invention relates to an electric arc furnace cover used in the metallurgical steelmaking industry, in particular to an electric furnace cover comprising a furnace cover body and a detachable cover core. Background technique [0002] Electric furnace steelmaking uses electric energy as the main energy source, using three-phase alternating current or direct current. The electric furnace is composed of a furnace cover, a furnace wall and a furnace bottom. The furnace cover can be moved, and the furnace cover is a spherical structure with electrode holes and smoke exhaust holes. In order to reduce power consumption and increase production, electric furnaces also use heavy oil or oxygen blowing to accelerate smelting. Due to the high temperature and large atmosphere changes in the furnace, the charge is generally in a cold state. Therefore, the lining and furnace cover of the electric furnace are often in a state of high temperature, slag erosion and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B3/16F27D1/18
Inventor 付延峰王毅
Owner 洛阳双兴电气科技有限公司
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