Silica washing and screening device and method

Abstract

The invention relates to the field of iron alloy production, and discloses a silica washing and screening device and method. The device comprises a feed device, a conveying device, a washing and screening device and a deslagging and draining device which are arranged in sequence. The washing and screening device comprises a screening barrel capable of rotating axially to be used for screening silica raw materials and a spray head which is at least arranged at an opening of the screening barrel and used for flushing the silica raw materials in the screening barrel. A hole forming area is arranged on the peripheral wall of the screening barrel. The feed device conveys the silica raw materials into the screening barrel through the conveying device, the spray head is started while the screening barrel rotates, and therefore slag particles in the silica raw materials in the screening barrel and flushing water are leaked to the deslagging and draining device through the hole forming area. According to the silica washing and screening device, the silica raw materials can be washed and screened at the same time, and therefore the cleanliness of the raw materials and the moderation degree of silica particles are effectively improved, and then the stability and smelting quality of iron alloy production are improved.

Description

technical field [0001] The invention relates to the field of ferroalloy production, in particular to a silica washing and screening device and method. Background technique [0002] Ferroalloy refers to a product that is added to molten iron as a deoxidizer, element additive, etc. during steelmaking to make steel have certain characteristics or meet certain requirements. In recent years, with the prosperity of the ferroalloy industry, the industry has paid more and more attention to the preparation of raw materials (such as silica, etc.) before ferroalloy production. The quality of raw materials has become the key direction of stable production and tapping potential profits in the ferroalloy industry. An industry consensus has been reached . [0003] In the existing ferroalloy production process, the raw materials often directly enter the industrial production batching system without washing or screening. Taking silica as an example, the silica without washing and screening ...

AI Technical Summary

Problems solved by technology

[0003] In the existing ferroalloy production process, the raw materials often directly enter the industrial production batching system without washing or screening. Taking silica as an example, the silica without washing and screening directly enters the industrial silicon production batching system, thereby removing a large amount of impurities. And large particle size and too small particle size silica materials are brought into submerged arc furnace for smelting, which seriously affects the stability of submerged arc furnace production and the quality of industrial silicon products

However, although technicians can think of washing or sieving the silica during the ferroalloy production process, they can only think of applying the corresponding device to only wash or sieve the silica, but not to wash the silica at the same time. and sieving

In addition, the existing corresponding devices almost always have problems such as water waste and slag discharge to varying degrees when washing or screening silica.

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