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Multifunctional stainless steel converter

A stainless steel, multi-functional technology, applied in the field of chromium-based stainless steel and nickel-chromium-based smelting, can solve problems such as large fluctuations in composition and inability to adapt to smelting tasks, reducing contact area, flexible production organization and scheduling, and strong reliability. Effect

Active Publication Date: 2017-10-27
BERIS ENG & RES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many types of laterite nickel ore, and the composition differences between different types are large, which will cause large fluctuations in the composition of [Si] and [P] elements in ferronickel water, which will have a certain impact on stainless steel production
[0003] The traditional stainless steel refining converter can no longer adapt to new smelting tasks under the condition of new raw materials, so it is urgent to develop a converter that can meet the smelting requirements of pretreatment converter and refining converter

Method used

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  • Multifunctional stainless steel converter
  • Multifunctional stainless steel converter
  • Multifunctional stainless steel converter

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Embodiment Construction

[0019] In order to better understand the purpose, structure and function of the present invention, a multifunctional stainless steel converter of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Such as Figure 1 to Figure 5 As shown, it shows a multifunctional stainless steel converter of the present invention, the converter includes a pretreatment component and a refining component, the pretreatment component is used for pretreatment and smelting of molten iron containing nickel and / or chromium, and the converter containing the refining component Provide high-quality semi-steel, including the tapping hole 2 set on the side wall of the furnace cap 3 and the bottom tuyere 61 set on the furnace bottom 6. The tapping hole 2 is used for slag blocking and tapping to realize the separation of steel slag and prevent different The steel slag of the nature enters the next process, the bottom blowing valve station b...

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Abstract

The invention discloses a multifunctional stainless steel converter which comprises a pre-treatment assembly and a refining assembly, wherein the pre-treatment assembly is used for pre-treated smelting of nickel-containing and / or chromium-containing molten iron to provide high quality semi-steel to the converter comprising the refining assembly; the pre-treatment assembly comprises a tap hole formed in the side wall of a furnace crown and a bottom blow-off nozzle arranged at the furnace bottom, the tap hole is used for pushing off the slag and tapping and the bottom blow-off nozzle blows into the furnace to stir steel liquor in the furnace; the refining assembly is used for refined smelting of the nickel-containing and / or chromium-containing molten iron and providing high-yield qualified molten steel to a continuous casting machine, and the refining assembly comprises a tapping spout formed in the top of the furnace crown and a side blow-off nozzle formed in the body, the tap sprout is used for tapping slag and the side blow-off nozzle blows into the furnace to stir the molten steel in the furnace. The pre-treatment assembly is started and the refining assembly is stopped for pre-treated smelting; and the pre-treatment assembly is stopped and the refining assembly is started for refined smelting.

Description

technical field [0001] The invention relates to the field of smelting nickel-chromium-based and chromium-based stainless steels, in particular to a multifunctional stainless steel converter capable of meeting different smelting requirements of the converter. Background technique [0002] In recent years, due to great changes in the raw material structure of stainless steel smelting, the integrated process has become the leading development trend, that is, the molten nickel iron produced from laterite nickel ore or the molten ferrochromium produced from low-grade chromium ore "stainless steel integrated process". There are many types of lateritic nickel ore, and the composition differences between different types are large, which will cause large fluctuations in the composition of [Si] and [P] elements in ferronickel water, which will have a certain impact on stainless steel production. [0003] The traditional stainless steel refining converter can no longer adapt to new sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/42
CPCC21C5/005
Inventor 李伟娜樊君石红勇冀中年况增光陈圣鹏
Owner BERIS ENG & RES CORP
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