Furnace charging raw material preheating system and method

A raw material and blast furnace technology, which is applied in the field of preheating system for incoming raw materials, can solve the problems of high energy consumption of blast furnaces, achieve the effects of increasing temperature, reducing moisture, and solving low temperature

Pending Publication Date: 2022-07-12
SGIS SONGSHAN CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The object of the present invention is to provide a system and method for preheating the raw materials into the furnace, so as to realize the preheating operation of the raw materials into the furnace and solve the problem of high energy consumption of the blast furnace

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  • Furnace charging raw material preheating system and method
  • Furnace charging raw material preheating system and method

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Embodiment Construction

[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only the present invention. Some examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection...

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Abstract

The invention relates to the technical field of blast furnace smelting, and particularly discloses a preheating system and method for raw materials entering a furnace. The in-furnace raw material preheating system comprises a hot air module, a raw material screening device and a dust removal module. The hot air module comprises a blast furnace hot blast stove, a hot blast stove flue gas pipeline, a conveying pipeline and a plurality of flue gas pipelines, the hot blast stove flue gas pipeline communicates with the blast furnace hot blast stove, and the hot blast stove flue gas pipeline selectively communicates with the flue gas pipelines through the conveying pipeline; the raw material screening device is provided with a plurality of vibrating screen beds, the vibrating screen beds are used for screening raw materials entering the furnace according to particle sizes, and the flue gas pipeline is used for spraying flue gas to the raw materials entering the furnace on the vibrating screen beds; the dust removal module is used for absorbing dust penetrating through the vibrating screen bed. By improving the structure of the hot air module, redundant heat in the blast furnace hot blast stove can be conveyed to the raw material screening device for preheating, direct emission of high-temperature flue gas is avoided, the preheating effect of raw materials entering a blast furnace is achieved, and safe and stable operation of a gas system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of blast furnace smelting, in particular to a system and method for preheating raw materials into a furnace. Background technique [0002] The raw materials fed into the blast furnace generally include burnt ore, ball ore, raw ore and coke, etc. The raw ore usually includes many different varieties. Due to the different production and transportation links of various raw materials, the moisture percentage of the raw materials fluctuates greatly. Under normal circumstances, the maximum temperature of the sintered ore for direct delivery can reach about 50 °C, but most of them are at room temperature, and the temperature of the sintered ore is mostly room temperature, and the moisture of the sintered ore pellets is low, generally within 0.5% or even zero. (Except for being wet by rain during the rainy season). For coke, the commonly used dry quenching moisture is generally within 3%, while the water quenching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C21B5/00C21B9/00C21B9/10
CPCC22B1/00C21B5/00C21B9/00C21B9/10Y02P10/25
Inventor 陈生利刘明才钟鸽荘余骏匡洪锋陈炯刘立广曹旭段娟娟颜庆丽李明星艾中路
Owner SGIS SONGSHAN CO LTD
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