A rare earth waste crushing and drying integrated machine

Abstract

The invention discloses a rare earth waste crushing and drying integrated machine, which includes a hopper, a crushing device, a crushing device, a vibrating screen, a dryer and a belt conveyor arranged on the same frame from top to bottom. It includes a crushing cylinder, a floating plate is arranged above the crushing cylinder, and a cantilever-shaped main rotating shaft is arranged inside the crushing cylinder. The upper end of the main rotating shaft is movably supported on the floating plate. The crushing rod is arranged in a ring shape. The crushing device includes a crushing box with a feeding port on the upper end and a crushing box connected to the lower end of the crushing cylinder through a square funnel. The two ends of the crushing box are oppositely arranged with a turntable, and crushing knives are arranged at intervals on the turntable. The dryer includes The hot air box is equipped with honeycomb ceramic regenerators at intervals. The invention integrates multiple processes of crushing, screening and drying, which saves the workshop area, reduces the transfer period between materials and the transfer personnel, and reduces the The cost of working hours is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of waste recycling and processing, in particular to a processing device for rare earth waste recycling, crushing and drying. Background technique [0002] During the processing of rare earth ore raw materials, 20-30% (more than 10,000 tons) of NdFeB rare earth wastes will be produced. These rare earth wastes include oil sludge, grinding mud, slag, material edges, etc. Most of the rare earth wastes have high water content and many impurities , mostly agglomerated. These wastes not only contain a large amount of iron and boron, but also contain more rare earth elements neodymium (Nd), praseodymium (Pr) and a small amount of dysprosium (Dy) and gadolinium (Gd), etc. The rare earth elements in these wastes can be widely used It is used in toughened materials, alloy materials, luminescent materials and magnetic materials in electronics, laser, nuclear and guidance industries. It has a wide range of uses and is a...

AI Technical Summary

Problems solved by technology

[0004] At present, the dehydration, crushing, screening and drying processes of rare earth waste before acid treatment are generally completed by manual and simple machinery in the pretreatment stage, which not only occupies a large area of ​​the factory building, but also has high labor intensity and poor working environment. Moreover, the treatment effect is low, which affects the recovery rate of rare earths (the recovery rate is generally 90%, and the highest will not exceed 92%), and the treatment efficiency is not high, resulting in high production costs.

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