Horizontal type waste heat boiler of zinc-containing dust recovery system of rotary hearth furnace

A technology of dust recovery and waste heat boiler, which is applied to boiler water pipes, furnaces, blast furnaces, etc., and can solve problems such as unsatisfactory cooling effects
CN101666484BActive Publication Date: 2012-09-05SHANDONG IRON & STEEL CO LTD +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG IRON & STEEL CO LTD
Publication Date
2012-09-05

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Abstract

The invention relates to a horizontal type waste heat boiler of a zinc-containing dust recovery system of a rotary hearth furnace, belonging to the technical field of steel-making waste gas processing devices. The horizontal type waste heat boiler of the zinc-containing dust recovery system the rotary hearth furnace comprises a boiler body and a boiler cradle, wherein the boiler body is arranged on the boiler cradle; the boiler body is a cavity-shaped structure consisting of a boiler body water-cooling wall and an embedded scraping plate mechanism arranged on the bottom of the boiler body water-cooling wall, the boiler body water-cooling wall consists of a front wall water-cooling wall, a left wall water-cooling wall, a right wall water-cooling wall and a ceiling water-cooling wall, wherein the front wall water-cooling wall is provided with a smoke gas inlet, a rear wall water-cooling wall is provided with a smoke gas outlet, and the ceiling water-cooling wall is sequentially provided with a smoke gas radiation baffle plate, a radiation tube panel and an overheater; and the boiler cradle is provided with a steam pocket and a circulating pump. The invention can not only solve the problem of tube wall dust adherence, but also recover heat contained in smoke gas as much as possible under harsh conditions.
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Description

technical field

[0001] The invention relates to a horizontal waste heat boiler of a zinc-containing dust recovery system for a rotary hearth furnace, and belongs to the technical field of steelmaking waste gas treatment devices. Background technique

[0002] Steel mills produce a large amount of dust every day, most of which are mainly composed of iron and carbon, and also contain some zinc. These iron-containing dusts are generally sintered into pellets and returned to the blast furnace for ironmaking. However, during the sintering process, almost all the zinc in the dust remains, making the zinc content in the pellets higher and higher, which will generate zinc deposits in the blast furnace, seriously affecting the use of the blast furnace. Therefore, dust with high zinc content cannot be used as raw material for blast furnaces, and can only be thrown away and landfilled, which not only wastes resources, but also causes environmental pollution. In view of this situation,...

Claims

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