Cooling drum for smelting

Abstract

This invention relates to a cooling device for smelting. It comprises gearing, cylinder equipment and cooling equipment; the cylinder equipment is composed of a cylinder with a certain length and two openings at two ends and lining board placed on the inner surface, the rotation of said cylinder equipment is drove by gearing, the materials in the cylinder is cooled by cooling equipment, said cylinder comprises front, middle and rearbarrel made from different materials; said the middle part is stainless steel and its length is 2 / 3-3 / 4 of that of whole cylinder. The invention is characterized in that the materials, traditional structure and disposal mode of cylinder and scaleboard are all changed, the integrity of cylinder is optimized, the corrode resisting and wear resisting property are enhanced, the service life is prolonged, the maintenance cost is saved, and continuous and normal production of device is ensured.

Description

technical field [0001] The invention relates to a smelting equipment, in particular to a cooling equipment for smelting. Background technique [0002] The cooling cylinder is a kind of cooling equipment in the smelting production equipment. It is a horizontal cylinder with an inclined setting. The material enters from one end and flows out from the other end under the action of gravity. During the process, the cylinder rotates to make the materials mix with each other. Uniform, and cooling by direct spraying water cooling. The equipment can reduce the material from 200-300°C to 60-70°C. For example, it is used in the production of crude lead smelting, and the crude lead powder material after sieving the lead sintered block, that is, the lead back powder is cooled, mixed evenly, and sent to the next process. The lead return powder enters from one end of the cooling cylinder, and the cooling water is sprayed out from the water pipe fixed in the cylinder. The water is sprayed...

AI Technical Summary

Problems solved by technology

The reason is that the material of the cylinder liner is generally SQ16 casting with a thickness of 30mm, which has poor corrosion resistance and wear resistance; at the same time, the hardness of the lead sintered block is relatively high, and the liner is easy to be worn

2. The middle section of the cylinder, which accounts for 2 / 3 of the total length of the cylinder, is the part where the water spray is concentrated. Because the lead sintered block contains sulfide, it will be weakly acidic and corrosive when it meets the cooling water; while the material of the cylinder is Ordinary steel such as Q235 has a thickness of only 14mm, poor corrosion resistance and wear resistance, and the cylinder is easily corroded, such as Figure 4 As shown; especially when the cylinder in the transverse gap between the liners is in operation, the returned powder is easy to form a circulation in it, which accelerates the wear of the cylinder

Generally used for less than 5 months, the wall of this section of the cylinder is corroded, worn and pierced, and the whole cylinder is bent and deformed, facing scrapping

3. Each liner is generally positioned on the inner wall of the cylinder by two fastening screws. The head of the liner fixing screw is cylindrical, which is easy to slip when the liner is fastened and positioned. When the liner is installed, one person needs to be on the outside and inside of the cylinder. The round head of the screw is fixed, and one person tightens the screw outside the cylinder. The workload of fastening the liner is heavy, and the screws are often not tightened in place, and the liner is easy to loosen and fall off.

The reason is that the original design of the lining plate positioning hole is a cylindrical groove, such as image 3 As shown, because the head of the liner fastening screw is cylindrical, when the liner is fastened, the round head of the screw is easy to slip in the cylindrical groove, and the liner is difficult to fasten

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