复吹转炉底吹氧气和石灰粉水模拟

doi:10.13228/j.boyuan.issn0449-749x.20190329

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Abstract In order to research the bath mixing characteristics of the combined blowing converter during the bottom lime injection base fluxes with oxygen, a water model of the combined blown converter with bottom powder injection was established to investigate the powder distribution and the melt bath mixing. Water and hollow glass microspheres were used to simulate liquid iron and lime powder, respectively. The powder distribution and the melt bath mixing were studied using the image processing method. The mixing time of powder injection and the mixing time without powder injection were researched using electrical conductivity detection technology in the melt bath under the same carrier gas flow. The results showed that the bottom lame injection could promote the melt bath mixing, and powder diffusion velocity increased with carrier gas flow increasing. The mixing time without bottom powder injection decreased withcarrier gas flow increasing. Under the same bottom blowing carrier gas flow, the mixing time of bottom powder injection in melt bath was shorter than that without powder injection in the combined blown converter, in the experiment range, blending time of bottom powder injection in melt bath appeared minimum at 2 m³/h of carrier gas flow.

Key words： bottom powder injection water modeling carrier gas flow powder distribution mixing time

Received: 22 July 2019

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	LIANG Qiang
	CAI Jun

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LIANG Qiang,CAI Jun. Water modeling experimenton bottom lime injection base fluxes with oxygen into combined blown converter[J]. Iron and Steel, 2020, 55(5): 26-30.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20190329 OR http://www.chinamet.cn/Jweb_gt/EN/Y2020/V55/I5/26

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