Roasting device for preparing oxidized material through one-step process and technological method

Abstract

The invention relates to a roasting device for preparing oxidized material through the one-step process. The roasting device comprises a front wind collecting hood, a rotary device, a rear wind collecting hood, a sieving barrel, an exhaust gas dividing structure and a thermal insulating structure, wherein the front and rear ends of the rotary device are connected with the front wind collecting hood and the rear wind collecting hood separately; the sieving barrel is connected with the tail part of the rotary device in the rear wind collecting hood; an exhaust gas dividing outlet is formed in the top end of the front wind collecting hood; an exhaust gas outlet is formed in the top end of the rear wind collecting hood; the exhaust gas dividing outlet and the exhaust gas outlet are connected with the front air inlet and the tail air inlet of the exhaust gas dividing structure separately; and the thermal insulating structure is movably mounted on the periphery of the middle of the rotary device. The roasting device can finish pre-roasting and oxidization in one step, utilizes the combustion heat of self combustion and the self stirring function to realize the oxidization purpose, meetsthe requirement of the production process, saves energy, reduces the procedures of the production process, lowers the cost and improves the labor productivity.

Description

technical field [0001] The invention belongs to roasting technology, relates to the preparation of oxidized materials, in particular to a roasting device and a process method for preparing oxidized materials in one-step method. Background technique [0002] In the process of NdFeB waste recycling resources, the preparation of raw materials mainly adopts the technology of pre-roasting, crushing and grinding, and oxidation roasting. In this process, the pre-roasting process of the raw material is carried out by using its spontaneous combustion, while the oxidative roasting is roasted at a certain temperature, which requires external heating of natural gas, and the process is long, resulting in increased production costs. [0003] In addition, the soot generated in the process is recovered by the cyclone dust collector, and then enters the fan-shaped spray tower to cool down and recover the soot. Finally, after being absorbed by a spray, the exhaust gas is drawn out through the...

AI Technical Summary

Problems solved by technology

The labor intensity is very high, the wet materials on site are messy, and it is difficult to keep the environment clean

[0006] Therefore, the original process has long process, high cost, high risk, high labor intensity, poor site environment, high equipment maintenance requirements, waste heat is not utilized, equipment is not insulated, and the site operating environment is poor. not good

Images