System for preheating scrap steel by using waste heat and steelmaking process for improving scrap steel ratio
A technology of waste heat and scrap steel, applied in the field of steelmaking, can solve the problems of inability to improve the ratio of scrap steel in the steelmaking process, unfavorable energy saving and full utilization of resources in the steelmaking process, not in line with the concept of energy saving and emission reduction, etc. The effect of reducing the mixing of impurities and reducing power consumption
Pending Publication Date: 2022-02-11
云南永钢钢铁集团巨利达钢铁有限公司
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[0005] The purpose of the present invention is to provide a system for preheating steel scrap by using waste heat and a steelmaking process for increasing the steel scrap ratio, so as to solve the problem that the waste heat produced by the steelmaking process cannot be used to preheat steel scrap in the current market as proposed by the above-mentioned background technology , which is not conducive to energy saving and full utilization of resources in the steelmaking process, does not conform to the concept of modern energy saving and emission reduction, and cannot increase the scrap steel ratio in the steelmaking process, and cannot improve the utilization rate of scrap steel
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[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0050] see Figure 1-2 , the present invention provides a technical solution: a system for preheating steel scrap by using waste heat and a steelmaking process for increasing the ratio of steel scrap, including an automatic feeding module for feeding steel scrap, The input end of the automatic feeding module is connected to the input end of the preheating module, and the automatic feeding module transports the feeding scrap into the preheating mo...
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The invention discloses a system for preheating scrap steel by using waste heat and a steelmaking process for improving the scrap steel ratio. The system comprises an automatic feeding module, wherein the automatic feeding module is used for feeding the scrap steel, the input end of the automatic feeding module is connected with the input end of a preheating module, and the automatic feeding module is used for conveying fed waste steel into the preheating module; and the output end of the preheating module is connected with the input end of a temperature detection module, and the temperature detection module is located in a waste heat module and used for detecting the preheating temperature of the scrap steel. According to the system for preheating the scrap steel by using the waste heat and the steelmaking process for increasing the scrap steel ratio, the waste heat generated by flue gas in the steel-making process of an electric arc furnace is used for heating the scrap steel, after the temperature of the scrap steel entering the furnace is increased, the electric energy consumption per ton of steel can be reduced, the flue gas generated by steelmaking of the electric arc furnace is used for preheating the scrap steel, and the temperature of the scrap steel entering the furnace can reach about 600 DEG C, so that the purposes of saving energy and reducing consumption are achieved.
Description
technical field [0001] The invention relates to the technical field of steelmaking, in particular to a system for preheating scrap steel by using waste heat and a steelmaking process for increasing the ratio of scrap steel. Background technique [0002] Steelmaking is the process of smelting pig iron into steel. Under the high temperature of the steelmaking furnace, oxygen or iron oxides are used to convert carbon, phosphorus, sulfur and other impurities in scrap steel or pig iron into gas and slag to get steel. After the pig iron is smelted into steel A steel product is produced for application. [0003] However, the existing steelmaking system and process cannot use the waste heat generated in the steelmaking process to preheat scrap steel, which is not conducive to energy saving and full utilization of resources in the steelmaking process, does not conform to the modern concept of energy saving and emission reduction, and cannot improve the efficiency of the steelmaking p...
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IPC IPC(8): C21C5/52C21C7/00C21C7/06C21C7/064C21C7/068C21D1/18C21D1/26F27D3/00F27D13/00F27D17/00
CPCC21C5/52C21C5/527C21C7/0006C21C7/06C21C7/0645C21D1/26C21D1/18C21C7/068F27D13/002F27D17/004F27D3/0024Y02P10/20
Inventor 李祥利程永生林仰盛
Owner 云南永钢钢铁集团巨利达钢铁有限公司