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Anode cast molten iron for aluminum and its smelting process

A technology of molten iron and anode, applied in the direction of improving process efficiency, etc., can solve the problem of high cost, and achieve the effect of reducing material consumption and saving consumption

Active Publication Date: 2020-09-08
四川启明星铝业有限责任公司 +1
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Problems solved by technology

[0004] The technical problem solved by the present invention is that the production of existing phosphorus pig iron leads to high cost by supplementing pig iron or phosphorus pig iron

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  • Anode cast molten iron for aluminum and its smelting process

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Embodiment Construction

[0021] The invention discloses an anode casting molten iron for aluminum. The molten iron is obtained by smelting scrap iron and steel, returned iron, recarburizer, ferrosilicon, ferrophosphorus and element absorption stabilizer as raw materials according to a certain mass ratio. The composition of the element absorption stabilizer is Including recarburizer, ferrosilicon, ferromanganese, ferrophosphorus, rare earth elements, and composite materials containing magnesium, yttrium, and ferrosilicon inoculants. The scrap iron and steel is the scrap of steel, including carbon steel and low alloy steel.

[0022] Through smelting, in terms of mass percentage, the present invention controls the carbon content in molten iron to 2.8-3.5%, the silicon content to 2.0-2.6%, the manganese content to 0.4-0.8%, and the phosphorus content to 0.8-1.3%.

[0023] Because each chemical composition has different effects in molten iron, the control principle of five major elements C, Si, Mn, P, S in ...

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Abstract

The invention discloses aluminum anode cast molten iron and a melting process thereof, and belongs to the technical field of aluminum electrolytic production. The aluminum anode cast molten iron and the melting process aim at solving the problems that production of existing phosphorus pig iron is high in cost due to supplementing for pig iron or phosphorus pig iron. By means of the aluminum anodecast molten iron and the melting process, iron and steel scrap, recirculated iron, a carburizing agent, ferrosilicon, ferrophosphorus and an element absorption and stabilizing agent are adopted to beused as raw materials to be smelted according to a certain mass ratio, wherein the element absorption and stabilizing agent includes a carburizing agent, ferrosilicon, ferromanganese, ferrophosphorus,rare earth elements and a composite material containing magnesium, yttrium and a ferrosilicon nucleating agent. The phosphorus pig iron meets the requirements for casting performance of aluminum anodes, the pig iron or phosphorus pig iron does not need to be supplied additionally, scrap replacement of the phosphorus pig iron is not required, a large number of pig iron or phosphorus pig iron raw materials can be saved, and the purpose of reducing material consumption is achieved.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolytic production, and in particular relates to anode casting molten iron for aluminum and a smelting process thereof. Background technique [0002] The quality of phosphorus pig iron in the production of aluminum electrolytic anodes is directly related to the use effect of the anode in the production of electrolytic aluminum. Due to the repeated use of phosphorus pig iron in the production process, after many cycles, the composition of molten iron has changed greatly, and impurity elements have accumulated more and more, making it difficult to adjust the formula, resulting in poor quality and poor fluidity of molten iron. Good, casting is difficult, there are many cracks in the phosphorus iron ring after casting, the contact between the phosphorus iron ring and the carbon bowl is not firm, and the iron-carbon pressure drop is high during use. [0003] In response to the situation in the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/10C21C1/08C22C37/10C25C3/12
CPCC21C1/08C22C33/10C22C37/10C25C3/12Y02P10/20
Inventor 车金平李勇姜卫
Owner 四川启明星铝业有限责任公司
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