Pure aluminium iron compound deoxidant and its production process

Abstract

The present invention relates to a pure aluminium iron composite deoxidant and its production process. It includes 30-70% of aluminium and 70-30% of iron, and its production process includes the following steps: (1). adopting aluminium-melting furnace to melt high-purity aluminium; (2) pouring the molten aluminium into the mould with frustum form, trapezoidal tower form or triangular tower form and forming, continuously heating the mould and making the molten aluminium be in liquid state; (3). quick adding preheated pure iron granules or iron chipings; and (4) lightly and slowly vibrating mould and making the iron granules or iron chipings uniformly dispersed in molten aluminium, solidifying to form aluminium-iron composition whose specific weight can be up to 2.8 g / cu.cm-6.8 g / cu.cm.

Description

Technical field: [0001] The invention relates to the field of metallurgy, in particular to a pure aluminum-iron composite deoxidizer, and also relates to a production process of the pure aluminum-iron composite deoxidizer. Background technique: [0002] For a long time, in the smelting process of iron and steel enterprises, the composition adjustment and deoxidation are usually carried out by the alloy formed by metal aluminum or aluminum-iron remelting. Although these deoxidizers can improve the deoxidation effect, they are not ideal, and there are some difficult problems to solve , the main disadvantage of the metal aluminum deoxidizer is that it reacts violently during the deoxidation process, causing part of the aluminum to be burned, and cannot participate in the molten steel reaction and is wasted in vain. Small, limited to the upper part or surface of molten steel, so that the deoxidation effect is significantly reduced, and the yield of aluminum is less. Although th...

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Problems solved by technology

[0002] For a long time, in the smelting process of iron and steel enterprises, the composition adjustment and deoxidation are usually carried out by the alloy formed by metal aluminum or aluminum-iron remelting. Although these deoxidizers can improve the deoxidation effect, they are not ideal, and there are some difficult problems to solve , the main disadvantage of the metal aluminum deoxidizer is that it reacts violently during the deoxidation process, causing part of the aluminum to be burned, and cannot participate in the molten steel reaction and is wasted in vain. Small, limited to the upper part or surface of molten steel, so that the deoxidation effect is significantly reduced, and the yield of aluminum is less

Although the aluminum-iron alloy deoxidizer produced by remelting increases the specific gravity, the alloy after melting obviously changes the properties of the original metal aluminum, making its melting point rise, and the melting speed is too slow, which is not conducive to melting in molten steel and affects the quality of aluminum. Yield, reduce deoxidation effect

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