Phosphorite decarbonization calcining device and method

Abstract

The invention belongs to the technical field of chemical production equipment, and particularly relates to a phosphorite decarburization calcining device and method.The phosphorite decarburization calcining device comprises a calcining furnace body, a feeding port and a discharging channel, and the calcining furnace body comprises an outer ring combustion mechanism and an inner ring combustion mechanism; a first material guide mechanism and a second material guide mechanism which are adjustable in inclination are symmetrically arranged between the outer ring combustion mechanism and the inner ring combustion mechanism; the first material guide mechanism comprises a first limiting hole, a first material guide platform and a first electric control device; uniform heating is carried out in the mode that combustion airflow of the outer ring and the inner ring in the furnace is alternated, phosphate ore can stay in the furnace for calcination, the calcination face of the phosphate ore is increased, ore accumulation in the furnace is reduced, the calcination face of the ore in the furnace is flexibly controlled, meanwhile, the calcination time can be adaptively controlled, and the calcination efficiency is improved. The energy consumption in the calcining process is further saved, the calcining efficiency of the phosphate ore reaches the highest, and meanwhile, the ignition loss can reach the minimum.

Description

technical field [0001] The invention belongs to the technical field of chemical production equipment, and in particular relates to a phosphate rock decarburization and calcination device and method. Background technique [0002] The grade of phosphate rock in my country is relatively low. Except for a few rich ores that can be used directly, most of them require beneficiation before they can be used. Most of the phosphate rock in the world contains a large amount of carbonate. Carbonate phosphate rock is increasingly important. Due to the existence of carbonate, there is a 10% loss rate in yellow phosphorus ore, which brings unfavorable factors such as electricity consumption, coal consumption or affecting mixing ratio for yellow phosphorus production. Therefore, the phosphate rock used in the production of yellow phosphorus needs to be processed and put into production after the carbonic acid is removed. [0003] Studies have shown that calcination is one of the effective ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a phosphate rock decarburization and calcination device with simple structure and reasonable design in order to solve the problem of incomplete combustion in the existing phosphate rock calcination device, which causes a large amount of smoke and dust of metal residues to discharge and pollute the environment. and method

Images