Salinization treatment process for smoke dust of flash furnace and device thereof

A treatment process and treatment device technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of difficult removal of waste heat boilers, flue corrosion, aggravation, etc., to reduce the occurrence rate of smoke and dust, and prevent sticking. effect on objects and corrosive flues, increasing the chance of collision

Inactive Publication Date: 2010-03-03
YANGGU XIANGGUANG COPPER
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to solve the problem that the

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  • Salinization treatment process for smoke dust of flash furnace and device thereof

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[0018] The present invention will be described in detail below in conjunction with the drawings.

[0019] figure 1 This is a schematic diagram of the structure of the flash furnace smoke and dust salting treatment device of the present invention. The flash furnace is mainly used for smelting copper, nickel and other sulfide concentrates. Such as figure 1 As shown, the flash furnace smoke and dust salinization treatment device can be used in a flash smelting furnace or a flash converting furnace, such as figure 1 As shown, the device includes a base 14 installed on the inner wall of the furnace, a spray gun 4, a mixed oxygen pipe 3, a normal oxygen pipe 1 for feeding oxygen-enriched air, and a pure oxygen pipe for feeding industrial pure oxygen 2. One end of the spray gun 4 is inserted through the furnace wall and fixed on the base 14 with a nozzle in the middle. The angle between the nozzle and the central axis of the furnace body is 30 to 90 degrees, for example, the angle can...

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Abstract

The invention relates to the metallurgical field of a flash furnace, and provides a salinization treatment process for the smoke dust of the flash furnace and a device thereof. The device comprises abase, a spray gun, a mixed oxygen pipeline, a normoxic pipeline and a pure oxygen pipeline, wherein one end of the spray gun is inserted and fixed on the base, and the middle part thereof is providedwith a nozzle; the included angle between the nozzle and the central axis of a furnace body is 30-90 degrees; an air inlet of the spray gun is communicated with the mixed oxygen pipeline which is respectively communicated with the normoxic pipeline and the pure oxygen pipeline, and the normoxic pipeline and the pure oxygen pipeline are respectively provided with a pressure gage, an automatic shut-off valve, an automatic regulating value and a flow meter. By spraying pure oxygen or oxygen-enriched air into a high temperature area, sulfide in the smoke dust can be oxidized, and more smoke dust can be settled, so that the occurring rate of the smoke dust is further reduced, and oxygen required by salinization enters into a boiler through an uptake flue along with flue gas and begins to salinize contaminating metal at the medium-high temperature stage of the boiler, thus preventing the tube wall of the boiler with waste heat from being stuck with bonding substance which is not easily cleaned and avoiding the flue being corroded.

Description

technical field [0001] The invention relates to the field of flash furnace metallurgy, in particular to a salinization treatment process and device for flash furnace dust. Background technique [0002] In the metallurgical industry, especially in the flash furnace copper smelting process, the requirements for materials are very high. The particle size of the copper concentrate fed into the flash smelting furnace is 70% ≤ 200 mesh, and the matte powder fed into the flash blowing furnace is 70% ≤ 325 mesh, water content ≤ 0.3%, and the oxidation reaction is in a suspended state and completed in an instant. After the oxidation reaction is completed, the small droplets must collide with each other to form larger droplets and then settle in the sedimentation tank. Unsettled small droplets and under-oxidized small particles are mixed in the flue gas to form soot, and the soot rate is very high, generally around 7.5%. When dealing with high-impurity materials, the soot content in t...

Claims

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Application Information

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IPC IPC(8): C22B15/00B01D53/76B01D53/50
Inventor 周松林刘卫东胡松葛哲令
Owner YANGGU XIANGGUANG COPPER
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