Vertical, multi-pipe and external heating type manganese dioxide reduction roaster

Abstract

The invention discloses a vertical, multi-pipe and external heating type manganese dioxide reduction roaster. The vertical, multi-pipe and external heating type manganese dioxide reduction roaster comprises a vertical roaster body, and a plurality of roasting pipes mounted in the roaster body, wherein pushing rods are mounted in the roasting pipes; a plurality of scrapping rings are fixedly mounted on the pushing rods; the pushing rods can discontinuously move up and down by reciprocating within a fixed stroke in the roasting pipes. According to the vertical, multi-pipe and external heating type manganese dioxide reduction roaster, a set of hydraulic multi-ring pushing rod roasting pipe sintering blocking cleaners is mounted on the vertical roaster body and controlled by a control system through a hydraulic pump to discontinuously work; an oil cylinder plunge piston drives a plurality of multi-ring pushing rods to discontinuously move up and down by reciprocating within the fixed stroke in the roasting pipes through a movable bracket; when in moving, a plurality of scraping rings fixed on the pushing rods can be used for scraping powder sintering blocks which are possibly produced on the inner walls of the roasting pipes, so that all powder in the pipes can be kept in a normal roasting state, and the problems of blasting and raw powder movement in roasting of the roaster can be completely removed; meanwhile, an external exciting type large-capacity roasting material cooler is added to the roaster body, so that the cooling capacity and the cooling contact area can be increased; a hydraulic system can be used for continuously automatically working, and thus the problem of the manganese dioxide reduction roaster body can be solved well.

Description

technical field [0001] The invention relates to the technical field of industrial smelting, in particular to a vertical multi-tube external heating manganese dioxide reduction roasting furnace. Background technique [0002] my country is rich in manganese dioxide mineral resources, and the manganese dioxide reduction roasting process and equipment have been researched and developed for a long time, and its reduction roasting process is becoming more and more mature. At present, the roasting equipment used at home and abroad mainly include: rotary furnace, reverberatory furnace, fluidized fluidized furnace, open hearth furnace, multi-tube shaft furnace, etc. Each has its own advantages and disadvantages. One of the more advanced is the multi-tube shaft furnace that has only been successfully developed and used in recent years. The furnace solves the problems of oxygen-insulated roasting and oxygen-insulated cooling that other furnace types have been difficult to solve in te...

AI Technical Summary

Problems solved by technology

However, the furnace still has the following problems: during the calcining process of manganese ore powder in the roasting tube, the problem of sintering retardation is very easy to occur, and the consequence is that an empty tube and air pressure are formed under the roasting place. When the air pressure reaches a certain value, the gas breaks through the roasting The agglomerates are suddenly ejected from the feed port of the silo, and the phenomenon of "blasting" that is often said occurs.

However, because of its small cooling capacity, the increase in roasting output is restricted, and there is no room for adjustment in the balance between temperature and output.

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