Connection-in-series flash furnace and smelting method

A flash furnace and tandem technology, applied in the field of metallurgy, can solve the problems of high cost of reducing gas, low concentration of active ingredients, low efficiency of reducing gas, etc., and achieve the effect of prolonging smelting time, fast reduction speed and improving reduction rate

Active Publication Date: 2016-09-07
TIANJIN FLASH IRONMAKING TECH CO LTD
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Problems solved by technology

[0003] In view of this, the present invention aims to propose a series flash furnace to solve the problems of low efficiency and low concentration of active ing

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  • Connection-in-series flash furnace and smelting method
  • Connection-in-series flash furnace and smelting method
  • Connection-in-series flash furnace and smelting method

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Embodiment Construction

[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention relates to a connection-in-series flash furnace. The connection-in-series flash furnace comprises an upper reaction body (5), a lower reaction body (1), and a connecting passage (7) through which the upper reaction body (5) and the lower reaction body (1) are connected, wherein the upper reaction body (5) is positioned at the upper part of the lower reaction body (1), so that a connection-in-series structure is formed; one or more molten pools (2) are arranged at the lower part of the lower reaction body (1); the flash furnace further comprises a lifting flue (3) through which flue gas is exhausted, the lifting flue (3) communicates with the lower reaction body (1) through the molten pools (2), and a slag-off outlet is formed in each of the molten pools (2). The connection-in-series flash furnace disclosed by the invention provides heat and reducing atmosphere for the lower reaction body through the upper reaction body, so that the purpose that mineral fines of metal oxidized ore are rapidly reduced and melted through the lower reaction body is achieved.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a series flash furnace and a smelting method. Background technique [0002] From its invention to the present, flash metallurgy has only been used for the smelting of metal sulfide ores. The main reason is that the existing flash furnace has only one reaction space, and it is a micro-negative pressure environment, in which gas-solid or gas-liquid However, it is impossible to create a strong reducing atmosphere for fast and effective reduction reactions. For example, a single reaction space with a slight negative pressure in a flash furnace cannot produce an effective reducing gas (CO+H 2 ) with a volume ratio of more than 73% of the reducing gas, thus it is impossible to ensure that the metal oxides are substantially completely reduced in the suspended state. Contents of the invention [0003] In view of this, the present invention aims to propose a series flash furnace to solve the ...

Claims

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Application Information

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IPC IPC(8): C22B7/02C22B13/02C22B19/30C22B30/06C22B58/00F27B17/00F27D7/06
CPCC22B7/001C22B7/02C22B13/025C22B19/30C22B30/06C22B58/00F27B17/00F27D7/06F27D2007/063F27M2003/165C21B13/14F27D17/00Y02P10/20
Inventor 李效东邱江波夏明黄小兵
Owner TIANJIN FLASH IRONMAKING TECH CO LTD
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