Materials disposal method
A raw material processing and raw material technology, which is applied in the field of raw material processing for producing reduced iron, can solve the problems of lack of heat on the upper side, unbalanced heat, reduced strength and reducibility of sintered ore, etc., so as to save production costs, effectively use resources, The effect of saving energy and fuel (carbon material) costs
Active Publication Date: 2018-02-09
浦项股份有限公司
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- Description
- Claims
- Application Information
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Problems solved by technology
However, in actual operation, there will be excessive heat on the lower side of the trolley and a lack of heat on the upper side
This thermal imbalance has the problem of lowering the strength and reducibility of sintered ore.
Method used
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Embodiment Construction
[0032] Hereinafter, examples of the present invention will be described in detail. However, the present invention is not limited to the following disclosed embodiments, but is implemented in various forms that are different from each other. This embodiment is only used to improve the disclosure of the present invention, and to fully inform those skilled in the art of the present invention provided within the scope of the present invention.
[0033] figure 1 is a diagram briefly showing the structure of an apparatus for processing raw materials of an embodiment of the present invention, figure 2 This is a schematic cross-sectional view of a pellet produced by the raw material processing method of the embodiment of the present invention.
[0034] refer to figure 1 , raw material processing equipment such as equipment for making sintered ore may include: a granulation device 200 for making granules; a first hopper 130 for storing sintering ingredients; a second hopper 120 for...
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Abstract
The invention relates to a raw material processing method, comprising: a step of preparing a sintering blend raw material containing fine iron ores, a subsidiary raw material, and fuel; a step of producing a granular material containing an iron-bearing fine raw material and a carbonaceous material; a step of charging the sintering blend raw material and the granular material into a sintering bogie; and a step of sintering the sintering blend raw material, and firing the granular material. In the charging process, the granular material may be charged into the sintering bogie to form a first rawmaterial layer, and the sintering blend raw material may be charged into an upper portion of the first raw material layer to form a second raw material layer. Accordingly, the invention is able to produce reduced iron using the energy generated in the production of sintered ores.
Description
technical field [0001] The present invention relates to a raw material processing method, and more particularly relates to a raw material processing method capable of producing reduced iron by utilizing the energy generated in the production of sintered ore. Background technique [0002] The production process of sintering fine powder iron ore to produce sintered ore of a size suitable for a blast furnace mainly utilizes a Dwight-Lloyd (hereinafter referred to as "DL") type sintering process that can be mass-produced. In this DL-type sintering process, powdered iron ore, auxiliary raw materials and fuels (powdered coke, anthracite) are put into a drum type mixer for mixing and humidity control to make the sintering ingredients pseudo-particle, And put it on the sintering machine trolley at the specified height. Then, after surface ignition is carried out by means of an ignition furnace, air is forcibly sucked in from below, and the sintering ingredients are fired to produce...
Claims
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IPC IPC(8): C22B1/16C22B1/243C22B5/10
CPCC22B1/16C22B1/243C22B5/10C21B13/0066C21B13/0086C22B1/20F27B21/02
Inventor 孙相汉全智源
Owner 浦项股份有限公司