Method for preventing aluminum manganese ferrum composite deoxidized alloy from being pulverized and adhered to furnace
A technology of composite deoxidation and ferromanganese, applied in the field of alloy smelting, can solve the problems of use risk, reduce production cost of production enterprises, stick furnace and other problems, and achieve the effects of avoiding furnace sticking phenomenon, improving storage time and simple production process
Inactive Publication Date: 2014-09-03
JINAN JIGANG IRON ALLOY FACTORY
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies and provide a method for preventing pulverization and sticking of Al-Mn-ferro composite deoxidized alloy, solving the problem of sticking furnace and pulverization of Al-Mn-Fe in the production process, and making the Al-Mn ferro-manganese storage It takes 3-4 months to reduce the risk of steel companies using it and reduce the production costs of production companies
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Embodiment 1
[0021] The ingredients are 565Kg of electrolytic aluminum ingots, 50Kg of manganese flakes, 20.5Kg of ferro-titanium, and 364.5 kg of high-quality steel scrap. Among them, phosphorus, sulfur, and carbon are all lower than 0.02%. Magnesia is used as the basic furnace lining material to smelt aluminum-based composite alloys. Before each new furnace lining is used, a special refractory coating is evenly applied and then dried. Start smelting, which can effectively avoid the phenomenon of sticking furnace. The order of feeding is steel scrap first. After the scrap steel is melted, reduce the power of the electric furnace or stop heating and add aluminum ingots to reduce the burning loss of aluminum ingots as much as possible. After the aluminum ingot is melted, scoop up the dross on the liquid surface and add manganese flakes. After the temperature reached 1250°C, ferrotitanium was added, and electromagnetically stirred for 3 minutes.
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The invention relates to a method for preventing aluminum manganese ferrum composite deoxidized alloy from being pulverized and adhered to a furnace. According to the method, aluminum ingots, manganese sheets, ferrotitanium and waste steel are prepared according to the mass ratio; a smelting furnace adopts an alkaline furnace liner material; before a new furnace liner is used, fireproof paint is uniformly smeared on the inner surface of the furnace liner and dried; heating and smelting are performed; the charging sequence is that the waste steel is added firstly, and after the waste steel is melted down, the power of an electric furnace is reduced or heating is stopped and the aluminum ingots are added; after the aluminum ingots are melted, scum on the liquid level is removed and the manganese sheets are added; and the ferrotitanium is added when the temperature reaches 1,250 DEG C and electromagnetic stirring is performed for 2 to 5 minutes. By the method, the furnace sticking phenomenon can be effectively avoided; and according to the charging type and the charging sequence, pulverization in the alloy smelting process is effectively avoided.
Description
technical field [0001] The invention relates to a method for preventing pulverization and furnace sticking of an Al-Mn-Fe composite deoxidized alloy, belonging to the technical field of alloy smelting. Background technique [0002] At present, the production of Al-Mn-Fe is mainly limited by the storage time. Studies have shown that when the Al content is around 55, Al-Fe has the worst solid solubility, and the direct combination of Al-Fe elements is not good, which is an important reason. [0003] This type of production process is recorded in Chinese utility model patents with patent numbers 200610160721 and 200910020641. Patent 200610160721 mainly states that the Al-Mn-ferro alloy is smelted and cooled rapidly after pouring. The main method is to spray water mist for rapid cooling. The product standard is Al20-50%, Mn10-40%, C≤2.0%, Si≤2.0%, P≤0.3%, S≤0.2%, and the balance is iron. Under the current conditions of raw materials, the ideal storage time can be achieved even ...
Claims
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IPC IPC(8): C22C21/00C22C1/02
Inventor 王铮李明波王茂周韩强朱慧
Owner JINAN JIGANG IRON ALLOY FACTORY