Closed-loop control crushing system and closed-loop control method for sintered fuel

Abstract

The invention provides a closed-loop control crushing system and a closed-loop control method for sintered fuel. The closed-loop control crushing system comprises a double-layer vibrating screen arranged below a fuel bin, wherein the hole diameter of an upper-layer screen plate of the double-layer vibrating screen is greater than that a lower-layer screen plate of the double-layer vibrating screen; and a screen upper-layer discharging outlet of the double-layer vibrating screen is connected with a double-roller crusher, a discharging outlet of the double-roller crusher and a middle-layer discharging outlet of the double-layer vibrating screen are connected with a four-roller crusher through a first belt conveyor, a discharging outlet of the four-roller crusher is connected with a single-layer vibrating screen, a screen lower-layer discharging outlet of the double-layer vibrating screen and a screen lower-layer discharging outlet of the single-layer vibrating screen are connected with auser end through a second belt conveyor, and a screen upper-layer discharging outlet of the single-layer vibrating screen is connected with the four-roller crusher through the first belt conveyor toform a closed-loop system. According to the closed-loop control crushing system and the closed-loop control method for the sintered fuel, the crushing efficiency can be improved, the fuel treatment capability is improved, and a fuel particle size control technology is effectively achieved in a closed loop mode.

Description

Technical field: [0001] The invention relates to a closed-loop control crushing system and a closed-loop control method of sintered fuel, belonging to the technical field of metallurgy. Background technique: [0002] According to the research results of iron and steel plants, the particle size of fuel, mainly the uniformity of particle size composition, has an important impact on the technical and economic indicators of sintering, especially when sintering fine concentrates. Both the output of sinter ore and the quality of sinter ore depend on here. Under actual industrial production conditions, the fuel quality does not always reach the appropriate sintering temperature and sintering time, which is due to the use of unsuitable fuel crushing, screening equipment and process operation methods. The metallurgical industry has used various methods to improve the fuel crushing process of the sintering plant and improve the quality of the fuel—mainly referring to the particle siz...

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Problems solved by technology

(4) The search also found that the article "A Production Process for Crushing Sintered Fuel" published by "Xianggang Science and Technology" stated that the best operation method for the first crushing stage in this article can be improved compared with the old operation method Particulate components, but the large particle size cannot be completely excluded when the fuel provided by the four-roll crusher, and the output particle size is not controlled

[0005] From the current situation in the industry, although the existing fuel crushing technology has been optimized and improved in different ways, there are still technical problems of uncontrolled fuel particle size, low crushing efficiency, and a great impact on production quality and cost.

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