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Vacuum cycle degassing furnace and feeding device thereof

A technology of feeding device and vacuum circulation, which is applied in the field of smelting, can solve the problems of difficulty in ensuring feeding accuracy and high labor intensity, and achieve the effects of reducing labor intensity, reducing residence time, and facilitating quality improvement and control

Inactive Publication Date: 2020-07-14
PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a vacuum circulating degassing furnace and its feeding device, the structural design of the vacuum circulating degassing furnace and its feeding device can effectively solve the problem of high labor intensity caused by manual feeding of slag adjustment and upgrading. , The problem that feeding accuracy is difficult to guarantee

Method used

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  • Vacuum cycle degassing furnace and feeding device thereof

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Effect test

Embodiment 1

[0039] The RH refining furnace processes low-carbon aluminum series micro-carbon steel, the molten steel temperature at the RH station is 1610-1630°C, [C]%: 0.02%-0.05%, the slag surface of ladle 7 is about 500-1000kg, and the FeO% content in slag is 15 ~18%, after being treated by RH furnace, the composition and temperature of molten steel meet the requirements of continuous casting in the subsequent process.

[0040] The RH treatment position uses the ladle slag discharge chute 3. After the molten steel treatment is completed, the ladle slag discharge chute 3 is used to add the required amount of slag to the ladle 7 slag surface in time. Low-carbon aluminum series micro-carbon steel grades, the molten steel temperature after RH treatment is 1590°C, the slag content on the slag surface of ladle 7 is about 500-1000kg, the FeO% content in slag is 15-18%, and the Als burning loss is 60-120ppm. Using this invention, after the molten steel treatment is completed, the slag adjusted...

Embodiment 2

[0042] The RH refining furnace of a steelmaking plant processes IF series ultra-low carbon steel. The molten steel temperature at the RH station is 1630-1650°C, [C]%: 0.02%-0.05%. The FeO% content is 15-18%. After being treated by the RH furnace, the composition and temperature of the molten steel meet the requirements of continuous casting in the subsequent process.

[0043] The RH treatment position uses the ladle slag discharge chute 3. After the molten steel treatment is completed, the ladle slag discharge chute 3 is used to add the required amount of slag to the ladle 7 slag surface in time. IF ultra-low carbon series steel grades, the molten steel temperature after RH treatment is 1590-1600°C, the slag content on the slag surface of ladle 7 is about 500-1000kg, the FeO% content in slag is 15-18%, and the Als burning loss is 60-120ppm. Using this invention, after the molten steel treatment is completed, the slag adjusted and modified slag in the ladle 7 is weighed by vibr...

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Abstract

The invention discloses a feeding device of the vacuum cycle degassing furnace. The feeding device comprises a loading belt conveyor, a rotary distributing device and a steel ladle slag charge unloading chute. The loading belt conveyor is used for bearing adjusting slag modified slag charge, a feeding opening of the rotary distributing device is formed below the tail end of the loading belt conveyor to bear adjusting slag modified slag charge fallen from the tail end of the loading belt conveyor, and the top end of the steel ladle slag charge unloading chute is arranged below a discharging opening of the rotary distributing device to bear adjusting slag modified slag charge of a discharging opening of the rotary distributing device. The bottom end of the steel ladle slag charge unloading chute is arranged above the processing position steel ladle side of the vacuum cycle degassing furnace, and is used for adding the adjusting slag modified slag charge to steel ladle slag surface located at a processing position. By applying the feeding device of the vacuum cycle degassing furnace, automatic feeding of the adjusting slag modified slag charge is realized, manual batch charge operation is not needed, so that the labor strength of post operation personnel is reduced, and liquid steel process standing time is reduced. The feeding device is adopted to effectively trace the batch charge moment and batch charge capacity, and quality improvement control is facilitated.

Description

technical field [0001] The invention relates to the technical field of smelting, in particular to a vacuum circulation degassing furnace and a charging device thereof. Background technique [0002] In order to improve the surface quality of steel to meet and adapt to the needs of various high-grade steel, it is required that the inclusion content in steel should be as low as possible. For example, in order to improve the stamping ability, ultra-deep drawing performance and surface quality of high-grade steel represented by automotive plates, and to manufacture complex parts, the deoxidation products (inclusions) in the steel need to be as low as possible. [0003] In order to improve the cleanliness of molten steel, more and more iron and steel enterprises add slag adjusting agent to the steel slag on the inner surface of the ladle (ladle) to adjust the steel slag after the molten steel treatment in the vacuum circulation degassing furnace (RH refining furnace) is completed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G69/04B65G47/44B65G11/00C21C7/10C21C7/076
CPCB65G11/00B65G47/44B65G69/04C21C7/0087C21C7/076C21C7/10Y02P10/20
Inventor 王军陈娜周海龙卓钧黄汝铿谢林超
Owner PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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