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Electric arc furnace and furnace cover thereof

A technology of electric arc furnace and furnace cover, which is applied in the field of electric arc furnace, can solve the problems of reduced resource utilization, uneven temperature distribution, increased energy consumption, etc., and achieve the effects of reduced consumption, uniform temperature in the furnace, and energy saving

Pending Publication Date: 2020-01-17
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such electrode arrangement and arc characteristics will inevitably cause heating and cold areas in the area far away from the electrodes between each two electrodes, resulting in uneven temperature distribution in the furnace. This is an inherent weakness of electric arc furnace production for a long time. In actual production, through Arrange burners on the furnace wall corresponding to the cold zone, and use natural gas and other energy sources to heat to compensate the temperature in the cold zone. This will not only increase new equipment and arrange water cooling, but also greatly increase energy consumption, especially in the later stage of scrap steel melting. In the cold zone, the melting of scrap steel by natural gas combustion is slow, resulting in prolonged smelting time, not only increased power consumption, but also increased electrode loss, reduced resource utilization, and decreased productivity.

Method used

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  • Electric arc furnace and furnace cover thereof
  • Electric arc furnace and furnace cover thereof
  • Electric arc furnace and furnace cover thereof

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Effect test

Embodiment 1

[0029] Such as figure 1 and Figure 7 , the embodiment of the present invention provides a furnace cover 1 for an electric arc furnace, including a fixed cover 11 and a movable cover 12, the movable cover 12 is provided with at least one electrode penetration installation position, and the fixed cover 11 is An electrode rotation drive mechanism for driving the movable cover 12 to rotate around its own axis is provided.

[0030] The above-mentioned fixed cover 11 is spliced ​​with the above-mentioned movable cover 12 to form a furnace cover 1 that can cover and close the electric arc furnace body 2, that is, a hole is opened on the fixed cover 11 to install the movable cover 12, and through the movable The cover 12 closes the opening.

[0031] It can be understood that the movable cover 12 can rotate around its own axis, so it is preferably a circular / cylindrical cover or a conical / truncated cone cover. The above-mentioned fixed cover body 11 is basically the same as the exi...

Embodiment 2

[0044] Such as Figure 1-Figure 3 This embodiment provides an electric arc furnace, including a furnace body 2 and a furnace cover 1. The furnace cover 1 is preferably the furnace cover 1 provided in the first embodiment above, and the specific structure of the furnace cover 1 will not be repeated here. Wherein, the fixed cover body 11 is covered on the furnace body 2 , and the electrodes 3 are correspondingly pierced at the positions where the electrodes are pierced. As mentioned above, the number of electrodes 3 is generally three, which are evenly spaced around the central axis of the furnace body 2 / fixed cover 11 / movable cover 12 .

[0045] Further optimize the above embodiment, such as Figure 1-Figure 3 Each electrode 3 is equipped with an electrode clamping arm 4 and an electrode lifting drive mechanism 5 for driving the electrode clamping arm 4 up and down, and the electrode clamping arm 4 is driven up and down by the electrode lifting drive mechanism 5, which can d...

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Abstract

The invention relates to an electric arc furnace and a furnace cover thereof. The furnace cover comprises a fixed cover body and a movable cover body, wherein the movable cover body is provided with at least one electrode penetrating an installation position, and the fixed cover body is provided with an electrode rotation driving mechanism for driving the movable cover body to rotate around the axis of the movable cover body. According to the electric arc furnace and the furnace cover thereof, the furnace cover is decomposed into the fixed cover body and the movable cover body, and the movablecover body can rotate relative to the fixed cover body, so that the movable cover body can drive the electrodes to rotate together, the temperature distribution of a furnace hearth in the electric arc furnace can be effectively improved, the temperature in the furnace is more uniform, the smelting effect of the electric arc furnace is improved, and the energy consumption is saved; based on the furnace cover with the split structure, due to the fact that the movable cover body rotates, the movable cover body is easy to drive, the energy consumption is low, and the rotation stability and precision are easy to control; and in addition, rotary driving equipment can be arranged on the fixed cover body and does not need to occupy extra space, so that the device arrangement structure is compact.

Description

technical field [0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a furnace cover of an electric arc furnace and an electric arc furnace including the furnace cover. Background technique [0002] An electric arc furnace is an electric furnace that smelts ores and metals at high temperatures generated by electrode arcs. When the gas discharge forms an arc, the energy is very concentrated, and the arc temperature is above 3000°C. For smelting metals, the electric arc furnace is more flexible than other steelmaking furnaces. It can effectively remove impurities such as sulfur and phosphorus. The furnace temperature is easy to control and the equipment occupies a small area. It is suitable for smelting high-quality alloy steel. [0003] Electric arc furnaces can be divided into three-phase electric arc furnaces, consumable electric arc furnaces, single-phase electric arc furnaces and resistance electric arc furnaces, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/18F27B3/20F27B3/10
CPCF27D1/1816F27B3/20F27B3/10
Inventor 尉强陈洪智褚学征
Owner WISDRI ENG & RES INC LTD
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