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Rotary Oxygen Side Blowing Converter Double Furnace Smelting Device

A technology of smelting device and blowing converter, which is applied in the field of rotary oxygen side blowing converter double-furnace smelting device, can solve the problem of high smelting cost, poor steel quality, and lack of steel-making decarburization, dephosphorization, desulfurization, degassing, etc. Eliminate metallurgical functions such as inclusions, etc., to achieve the effect of compact structure, small footprint and high preheating temperature

Active Publication Date: 2018-10-16
平湖市宸信机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high smelting cost of electric arc furnace steelmaking, there is no competitive advantage in ordinary steelmaking, which has given birth to the phenomenon that intermediate frequency furnaces melt scrap steel to produce steel products
Since the intermediate frequency furnace only has the function of melting scrap steel, it does not have the metallurgical functions such as decarburization, dephosphorization, desulfurization, degassing, and inclusion removal required for steelmaking, so the quality of the produced steel is poor.

Method used

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  • Rotary Oxygen Side Blowing Converter Double Furnace Smelting Device
  • Rotary Oxygen Side Blowing Converter Double Furnace Smelting Device
  • Rotary Oxygen Side Blowing Converter Double Furnace Smelting Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] See Figure 1 to Figure 4 Shown: a rotary side-blown oxygen converter double furnace smelting device, including two rotary side-blown oxygen converters 100 arranged side by side. The rotary oxygen side-blown converter double furnace smelting device also includes a movable flue 200 and a rotatable fume hood 300 .

[0048] in:

[0049] Both rotary oxygen side-blown converters 100 include: base 10, cylinder body 20, slag outlet 30, steel outlet 40, feed inlet 50, oxygen lance 60, bottom blowing gas supply element 70, smoke outlet 80 and other components .

[0050] Hereinafter, the structure of one rotary oxygen side-blowing converter 100 will be used for illustration. In fact, the main structures of the two rotary oxygen side-blowing converters 100 are identical or mirror images.

[0051] The cylinder body 20 is cylindrical with a refractory layer inside, and can be rolled and welded by steel plates. One end of the cylinder body 20 is low and the other end is high so t...

Embodiment 2

[0068] combine Figure 5 As shown, the difference from Embodiment 1 is that the left end of the barrel 20 is higher and the right end is lower. At this time, the feeding port 50 is located on the side wall of the left end of the cylinder body 20 .

Embodiment 3

[0070] combine Figure 6 As shown, the difference from Embodiment 2 is that the cylinder body 20 is not provided with a slag outlet 30 . The reason is that in this case, part of the slag can overflow from the furnace door 231 only by slightly lowering the furnace door 231 . The rotary oxygen side-blown converter in this embodiment is suitable for use in the case that molten steel does not have a high requirement for phosphorus.

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PUM

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Abstract

The invention discloses a rotary oxygen side-blown converter double-furnace-body smelting device. The device comprises two rotary oxygen side-blown converters arranged side by side. The rotary oxygen side-blown converter double-furnace-body smelting device further comprises a movable flue and a rotary smoke hood. Each of the two rotary oxygen side-blown converters comprises a bottom frame, a cylinder, a steel outlet, a feeding inlet, an oxygen gun, a bottom blowing gas supply element and a smoke outlet. The two ends of the movable flue are matched with the smoke outlets of the two rotary oxygen side-blown converters respectively, and the rotary smoke hood is matched with two furnace doors. The device has the advantages of being good in preheating effect, compact in structure, capable of saving space and more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of steelmaking devices, in particular to a double-furnace smelting device of a rotary oxygen side-blown converter. Background technique [0002] The main forms of steelmaking furnaces are oxygen top-blown converter and electric arc furnace, both of which have their own advantages and disadvantages. That is, blast furnace molten iron is subjected to metallurgical functions such as desiliconization, decarburization, and dephosphorization through an oxygen top-blown converter, or is then subjected to appropriate external refining to become qualified molten steel. In the smelting process of pure molten iron, the chemical heat generated by the carbon-oxygen reaction is more than the heat required in the steelmaking process, so scrap steel can be added as a coolant to reduce energy consumption and steelmaking costs. Due to the limited furnace type of the oxygen top-blown converter, the steel scrap added is genera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/42
CPCC21C5/42
Inventor 张昌剑
Owner 平湖市宸信机械有限责任公司