An underground unloading ditch system for lime rotary kiln raw materials

Abstract

The invention relates to a lime rotary kiln raw material underground discharging ditch system which comprises a civil engineering structure, a mechanical system, a dust removing system and an automatic control system. The civil engineering structure is divided into an underground structure and an on-ground structure and is divided into a plurality of spans, each span is seven meters according to the width of a conveying car, each span is an unloading position, and an underground material groove (1) is in a communicated long-funnel shape. The mechanical system comprises a manual rod valve (13), a vibration feeder (14), a vibration screen (15), a powder returning belt (16), a finished product belt (17) and a powder returning bucket elevator (10). The dust removing system is connected with the vibration screen (15) and a belt material guiding groove (18). The automatic control system carries out linkage control over the vibration feeder (14), the vibration screen (15) and the dust removing system under each square discharging opening (3). Secondary transferring is avoided, the fact that stone materials are not polluted is guaranteed, stone material grinding loss is reduced, operation cost is greatly saved, and finished product lime quality is guarantee.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to an underground unloading ditch system for raw materials of a lime rotary kiln, which is suitable for the feeding system of granular materials. Background technique [0002] With the rapid development of the metallurgical industry, the quality requirements for finished lime are increasing. The lime rotary kiln system gradually replaces the traditional shaft kiln with its advantages of high production efficiency, large output, stable product quality, and the ability to use waste small-grained limestone. With the maturity of lime rotary kiln production technology, the quality of limestone raw material has become the most important factor affecting the quality of finished lime. In the lime production line using preheater-rotary kiln-cooler, the particle size of limestone raw material is required to be 15-50mm, and the main unfavorable factors affecting the quality of finished products are: ...

AI Technical Summary

Problems solved by technology

This process will cause: the transport vehicle enters the site to pile up materials and the forklift reverses the second time, which will cause secondary pollution of the stone, increased tire wear and crushing of the stone; wind and sand will cause secondary pollution to the stone, and rain and snow will soak the stone. Wet stones will make the screening effect worse; unloaded forklifts will increase labor and equipment costs for a long time

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