CN201344721Y - Zinc-melting jet-type inductor with 400 kW power - Google Patents

Abstract

The utility model discloses a 400kW molten zinc jet flow induction body. The active power of the molten zinc jet flow induction body is 400kW, which is used for melting and heat preservation of electrolytic zinc flakes and zinc-based alloys. The jet flow induction body is provided with a melting channel formed by a wooden melting channel mould, an iron core is arranged in the melting channel, a coil is wound on the iron core, and a protective sleeve is covered outside the coil; pouring There are special refractory materials. The jet flow induction body can improve the production capacity of a single induction furnace, reduce unit consumption, increase transmission voltage, reduce line loss, improve thermal efficiency, and make the smelting and alloying process have better uniformity.

Description

400kW molten zinc jet flow induction body

technical field

The utility model relates to a metal smelting device, specifically, the utility model is a 400kW molten zinc jet flow induction body. The jet-type induction body has an active power of 400kW and is used for melting and heat preservation of electrolytic zinc flakes and zinc-based alloys.

Background technique

At present, the most widely used core molten zinc induction furnace in China is the high-power jet flow induction body, and the maximum power of a single induction body is 300kW. With 300kw, 1×300=300kw; 2×300=600kw; 3×300kw=900kw; 4×300kw=1200kw series power frequency cored zinc melting induction furnace can be designed. There are also inductors with smaller power such as 240kw, 180kw, etc. The total power of the electric furnace designed with these low-power inductors is generally below 1200kw.

According to the mature process of domestic zinc smelting, the maximum power of an electric furnace designed with a 300kw induction body is generally 900kw, its productivity is 7.5-8t/h, and its unit consumption is 110kw/t. Therefore, the induction furnace designed with low-power induction body has relatively low production capacity and relatively high unit consumption; to meet the requirements of large-scale production, it is necessary to increase the number of induction furnaces, thereby increasing equipment investment and land investment.

Utility model content

The purpose of the utility model is to provide a molten zinc jet flow induction body with an active power of 400kW. The jet flow induction body can improve the production capacity of a single induction furnace, reduce unit consumption, increase transmission voltage, reduce line loss and improve thermal efficiency.

In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

The molten zinc jet flow induction body is provided with a melting groove formed by a wooden melting groove mold, an iron core is arranged in the melting groove, a coil is wound on the iron core, and a protective sleeve is covered outside the coil; The outside of the melting channel is cast with special refractory materials.

The coil is a double-layer square coil made of solid flat copper wire wrapped with double-layer insulation.

The induction body is also provided with an induction body casing, fans are installed at both ends of the induction body casing, and a wind cover is arranged in the middle of the induction body casing to form an air cooling system for coils and iron cores.

The shell of the induction body is welded by steel plates, and the flange is planed and drilled as a whole after welding.

The iron core is a core structure, which is processed and assembled by silicon steel sheets, splints, double-ended screws, insulating parts, etc.

The protective cover is made of square stainless steel pressed and welded, and the insulating strip is embedded in the interface after shaping.

The special refractory material is a castable with high strength and suitable for the working environment of the melting channel.

The utility model uses electromagnetic induction to make the furnace material itself generate heat, so as to achieve the purpose of furnace material melting and heat preservation. The inductor is equivalent to a transformer with an iron core. The metal in the melting channel is equivalent to one turn of the secondary coil of the transformer. The induction coil (covered on the iron core) is equivalent to the primary coil. The metal heats up and melts, and then transfers the heat to the metal in the furnace through conduction, convection, etc., so that the metal in the molten pool is continuously melted and heated.

The utility model has the following advantages:

The molten zinc jet flow induction body can improve the production capacity of a single induction furnace, reduce unit consumption, increase transmission voltage, reduce line loss, improve thermal efficiency, and make the smelting and alloying process have better uniformity.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a side view structural diagram of the utility model.

Fig. 3 is a schematic diagram of the external structure of the utility model.

Explanation of reference signs: 1. Inductor casing; 2. Fan; 3. Wind cover; 4. Melting channel; 5. Asbestos board; 6. Protective sleeve; 7. Coil; 8. Iron core;

Detailed ways

Example 1

As shown in Figure 1, the molten zinc jet flow induction body of the utility model is provided with a melting channel 4 formed by a wooden melting channel mold, and an iron core 8 is arranged in the melting channel 4, and a coil 7 is wound on the iron core 8 , the coil 7 is covered with a protective sheath 6; the outer side of the melting channel 4 is poured with a special refractory material 9. An asbestos board 5 is covered on the outside of the special refractory material 9 for heat preservation.

The coil 7 is a double-layer square coil formed by wrapping a solid flat copper wire with double-layer insulation.

The induction body is also provided with an induction body shell 1, fans 2 are installed at both ends of the induction body shell, and a wind cover 3 is arranged in the middle of the induction body shell to form an air cooling system of a coil 7 and an iron core 8, as shown in Figure 3 .

When in use, since the power supply voltage is increased (the power supply voltage is 750V), the line loss is reduced, the heat dissipation area is reduced, and the thermal efficiency is improved.

The efficacy comparison of the utility model and existing products is shown in Table 1.

Table 1 The utility model and the efficacy comparison table of existing products

index 3×400kw＝1200kw molten zinc induction furnace 3×300kw＝900kw molten zinc induction furnace production capacity 11～11.5t/h 7.5～8t/h Smelting unit consumption 105kw·h/t 110kw h/t electrical efficiency ~98% ~96% Annual production of 200,000 tons of zinc requires the number of electric furnaces 3 units 4 units

The molten zinc jet flow induction body provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the utility model. The description of the above examples is only used to help understand the utility model. new method and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation and application scope. In summary, the contents of this specification should not It should be understood as a limitation of the present utility model.

Claims (3)

1. a molten zinc spray pattern inductor is characterized in that: be provided with the channel that is formed by wooden molten channel mould, be provided with iron core in channel, be tied with coil on iron core, be coated with protective sleeve at coil; Be cast with special refractories in the described channel outside.

2. molten zinc spray pattern inductor according to claim 1 is characterized in that: described coil is the double-deck square coil that the coiling of solid flat type copper wire bag double hyer insulation forms.

3. molten zinc spray pattern inductor according to claim 1 is characterized in that: also be provided with the inductor shell, at the two ends of inductor shell blower fan be housed, be provided with fan housing in the middle of the inductor shell.

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