Ferronickel granulation method and ferronickel granulation device

Abstract

The invention relates to a ferronickel granulation method, which includes the steps: treating high-temperature molten ferronickel by using a granulation device; collecting the high-temperature molten ferronickel into a molten iron jar and conveying the molten iron jar to a tipping device through conveying equipment; starting the granulation device and leading a horizontally rotating granulation disc to be 500-1000 revolution per minute; stating the tipping device to pour the high-temperature molten ferronickel into a hopper with an outlet positioned above the horizontally rotating granulationdisc; dropping the high-temperature molten ferronickel into the horizontally rotating granulation disc in the granulation device, centrifugally sputtering and granulating the high-temperature molten ferronickel by the horizontally rotating granulation disc to form high-temperature molten ferronickel grains, and crushing and cooling the high-temperature molten ferronickel grains through jet streamto form smaller ferronickel grains; dropping the ferronickel grains into a water quenching bin and forming fine ferronickel grains by means of water quenching; dewatering the fine ferronickel grains by a lifting dewaterer and feeding the fine ferronickel grains into a fine ferronickel grain collecting bin. The fine ferronickel grains generated by the ferronickel granulation method are small in grain size, and steelmaking time can be shortened.

Description

technical field [0001] The invention relates to a nickel-iron granulation treatment method, which uses a granulation device to process high-temperature nickel-iron water, and the granulation treatment device includes a granulation tank, a disc granulator, and a lifting dehydrator; High-temperature nickel-iron water treatment forms nickel-iron fine particles with a particle size of 5mm-20mm. Background technique [0002] Ferronickel raw materials need to be added to the production of stainless steel. The smaller the particles of ferronickel ingots are, the more time it can shorten the smelting time of steelmaking, thereby saving the electricity consumption of the electric furnace. The prior art is to mechanically pulverize the ferronickel ingots. The size of nickel-iron fragments generated by the prior art is relatively large, generally about 200 mm, which increases the crushing components and increases the cost of stainless steel smelting. Chinese patent 97228276.9 disclose...

AI Technical Summary

Problems solved by technology

However, in the process of processing, often due to the change of slag amount, it is easy to cause granulation and insufficient cooling, resulting in the appearance of large pieces of red slag, which affects the quality of the finished slag; a large amount of steam generated instantaneously accumulates in the equipment, making the device The temperature and pressure in the interior increased sharply, and explosion accidents occurred from time to time.

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