Combination metallurgical furnace for producing zinc alloy and zinc alloy combination producing method

Abstract

The invention provides a combined metallurgical furnace and a combined production method for zinc alloy, comprising a cored line-frequency induction furnace (2) and at least two line-frequency coreless induction furnaces (7) with dumping devices (13); a convertible chute (6) is connected between a liquid outlet of the cored line-frequency induction furnace and a liquid inlet (14) of the line-frequency coreless induction furnaces; and a casting mechanism (9) is arranged correspondingly to a sprue (8) of the line-frequency coreless induction furnaces. The production method comprises the steps as follows: the zinc liquid which is melted in the cored line-frequency induction furnace is injected into each line-frequency coreless induction furnace in turn by the convertible chute and is then mixed with the middle alloy liquid which is smelted in advance in the line-frequency coreless induction furnaces; the non-contact melt mixing is realized by the electromagnetic induction force of the line-frequency coreless induction furnaces, thus preparing the zinc alloy ingot by pouring the zinc alloy liquid. The combined metallurgical furnace and the combined production method have high production efficiency, high yield, good quality of the produced zinc alloy, low energy consumption and small damage to the furnace body.

Description

technical field [0001] The invention belongs to the technical field of deep processing of nonferrous metal products, in particular to the technical field of zinc alloy production equipment and technology. Background technique [0002] In recent years, the production and consumption of metal zinc in my country rank first in the world, and the demand is still increasing year by year. According to the analysis of the world's zinc consumption structure in 2006, 50% of the global 0# zinc is used in anti-corrosion technology fields such as hot-dip galvanized alloys, and the market potential of hot-dip galvanized alloys is huge. [0003] The existing zinc alloy production equipment and process are very simple. Zinc smelters usually transform the high-power cored induction furnace used to melt zinc flakes, open a hole in the center of the furnace roof, and install a set of mechanical equipment extending into the furnace. Stirring device, in addition, an intermediate frequency induc...

AI Technical Summary

Problems solved by technology

When the alloy liquid is prepared, stirred and analyzed in front of the furnace, heating or heat preservation can only be stopped, and the continuous melting advantages of the high-power induction furnace cannot be brought into play.

[0007] 2. The uniformity of the alloy composition is not ideal, and the product quality is limited

[0008] In order to reduce the impact on thermal efficiency, the aperture of the hole on the top of the induction furnace should not be too large, which limits the diameter of the stirring blade of the mechanical stirring device, so that the stirring range of the blade is small

The small-scale stirring has limited influence on the furnace, resulting in insufficient stirring, and the iron-increasing effect of the blades, which has a negative impact on the uniformity of the alloy liquid composition and the control of the iron content.

[0009] 3. It is more troublesome to change the production alloy variety, and the effective production time is limited

[0010] When it is necessary to change the type of alloy produced, it is a time-consuming and labor-intensive task to clean the large-capacity cored induction furnace

When changing or adding alloying elements, it takes a long time to complete the furnace cleaning, which directly limits the effective production time of the production system and indirectly increases the energy consumption of alloy production

[0011] 4. Large fluctuations in furnace temperature have adverse effects on electrical appliances and furnace life

[0012] When the alloy liquid is released and a large amount of zinc flakes are added, the temperature is the lowest and high power heating is required; when the intermediate alloy is mixed, the temperature needs to be raised to the highest, which is not conducive to control in terms of energy consumption and metal burning loss, caused by frequent raising and lowering the furnace temperature Cold and heat shock directly affect the service life of the furnace body

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