A blast furnace dust recovery device and method

A blast furnace dust removal and recycling device technology, which is applied in the direction of discharge device, recycling technology, process efficiency improvement, etc., can solve the problems of blast furnace stability and safety, blast furnace dust removal recycling restrictions, blast furnace dust removal ratio restrictions, etc. problems, to achieve the effect of buffering slag and iron tumbling and scour effects

Active Publication Date: 2019-08-27
BAOSHAN IRON & STEEL CO LTD
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  • Description
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Problems solved by technology

However, after the sinter with blast furnace dust is added to the blast furnace for smelting, the harmful elements in the blast furnace dust will circulate and enrich in the blast furnace, which will destroy the stability and safety of blast furnace production. Therefore, the proportion of blast furnace dust in sinter There are strict restrictions, so that the recycling of blast furnace dust is greatly limited

Method used

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  • A blast furnace dust recovery device and method
  • A blast furnace dust recovery device and method
  • A blast furnace dust recovery device and method

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Embodiment Construction

[0025] Below, the structure and working principle of the present invention will be further described in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, the blast furnace dust removal and ash recovery device of the present invention has: molten iron main ditch 1, the molten iron main ditch 1 is a groove for molten iron flow, one end of which is used to inject molten iron, and the lower half of the other end is provided with a through hole 11, The through hole 11 is used to discharge the molten iron in the molten iron main ditch 1, and usually discharges the molten iron into the torpedo tank. In addition, a gap 12 is opened on a long side wall of the molten iron main ditch 1, and the gap 12 is used to discharge and clean the slag. use

[0027] The blast furnace dust recovery device of the present invention also includes a spray gun 2. Generally, the spray gun 2 is connected with a blast furnace dust collection device (not shown), and is used to s...

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Abstract

The invention discloses a blast furnace precipitator dust recycling device and method. The blast furnace precipitator dust recycling device is provided with a molten iron main channel and a spraying gun. One end of the molten iron main channel is used for injecting molten iron, and the other end of the molten iron main channel is provided with a through hole which is used for draining the molten iron in the molten iron main channel. A notch is formed in a long edge wall of the molten iron main channel, the notch is used for discharging slag, and the position of the through hole is lower than that of the notch. The spraying gun is perpendicular to the molten iron main channel, and used for jetting blast furnace precipitator dust into the molten iron main channel. By adopting the blast furnace precipitator dust recycling device and method, the iron element in the blast furnace precipitator dust can be recycled, and centralized processing can be conducted on other harmful element substances.

Description

technical field [0001] The invention relates to a blast furnace dust removal ash recovery device and method. Background technique [0002] Blast furnace dedusting dust is the dust of the raw fuel discharged together with the blast furnace gas during the ironmaking blast furnace and the particles produced by the intense reaction in the high temperature zone. It contains free and combined states and complexes of various elements such as iron and carbon. Specifically, as shown in Table 1, iron oxide, alumina, silicon oxide and calcium oxide are mostly composed of iron oxide, aluminum oxide, silicon oxide and calcium oxide, which are light in weight, small in size and contain a variety of harmful and toxic substances, and are one of the main solid emissions from iron and steel enterprises. [0003] The main components of blast furnace dust [0004] [0005] Table 1 [0006] In blast furnace production, a large amount of blast furnace gas dust is separated from the gas by gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/14C21B3/04
CPCY02P10/20Y02W30/50
Inventor 潘景照徐宏辉刘平基梅玮斌孙国军
Owner BAOSHAN IRON & STEEL CO LTD
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