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Multifunctional top-gun of together using channel for RH vacuum firing furnace

A multi-functional, vacuum furnace technology, applied in burners for burning powder fuels, transportation of non-flammable liquids/gases, combustion methods, etc. functionality, reduced manufacturing and operating costs, and improved interior space utilization

Inactive Publication Date: 2007-10-31
袁林 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing RH vacuum furnaces use oxygen blowing and powder spraying multi-functional top guns for baking, all of which adopt multi-path, single nozzle or multi-nozzle structure, that is, the oxygen and powder sprayed to the molten steel need to be provided with a separate channel and a nozzle, together with the gas and oxygen composite sleeve channel and nozzle for heating and baking of the vacuum furnace, so that the entire sleeve and branch pipes are numerous, the diameter of the gun body is large, the structure is complex, the cooling effect is poor, and the top The manufacturing cost of the gun is high and the operation consumption is large, all uneconomical with respect to the structure of the gun body that the present invention can implement

Method used

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  • Multifunctional top-gun of together using channel for RH vacuum firing furnace
  • Multifunctional top-gun of together using channel for RH vacuum firing furnace
  • Multifunctional top-gun of together using channel for RH vacuum firing furnace

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Experimental program
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Effect test

Embodiment Construction

[0016] The embodiment is to design the channels and nozzles for blowing oxygen and powder to molten steel as the same channel and nozzles, and place them on the axis line of the top gun. The outlet of the gas channel is arranged near the outlet end of the above-mentioned nozzle, so that the gun body is only a four-layer casing when it has the three functions of oxygen blowing, powder spraying and baking. The innermost layer is the oxygen blowing and powder spraying channels and nozzles, the second inner layer is the cooling water inlet channel, the outer layer is the gas channel, and the outermost layer is the cooling water outlet channel. The cooling water inlet channel and the gas channel can be designed interchangeably, but the sub-inner layer is set as a cooling water inlet pipe channel to have a better cooling effect on each channel in the cooling gun body.

[0017] The multi-functional top gun with shared channel for RH vacuum furnace of the present invention is a four-l...

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PUM

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Abstract

A multifunction top lance of party-channel for RH vacuum furnace is used for oxygen-blowing, dusting and baking of the RH molten-steel vacuum circulating process furnace. The oxygen-blowing and dusting of lance are finished in the same channel and by the same injector and the channel is cleaned by the gas purging device when oxygen-blowing and dusting are exchanged. Compared to the prior multifunction top lance, the invention increases the utilization of inner space of lance and the cooling effect, reduces the manufacturing cost and operating cost and optimizes the oxygen-blowing, dusting and baking function in the RH molten-steel vacuum circulating process.

Description

technical field [0001] The invention relates to a multi-functional top lance for RH vacuum furnace, a kind of oxygen blowing and powder spraying to complete the oxygen blowing and powder spraying in the same channel and the same nozzle, and is used for the oxygen blowing and powder spraying drying on the RH molten steel vacuum circulation treatment furnace. Roast top gun. Background technique [0002] The RH molten steel vacuum circulation treatment method is a secondary refining process outside the furnace in iron and steel smelting. In this process, a closed vacuum furnace is used to circulate the molten steel in the vacuum furnace to obtain better quality steel. [0003] Existing RH vacuum furnaces use oxygen blowing and powder spraying multi-functional top guns for baking, all of which adopt multi-path, single nozzle or multi-nozzle structure, that is, the oxygen and powder sprayed to the molten steel need to be provided with a separate channel and a...

Claims

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Application Information

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IPC IPC(8): F23D1/00F23L7/00
Inventor 袁林郭晓庆刘延春
Owner 袁林
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