Environment-friendly and energy-saving zinc oxide graded collecting device

Abstract

The invention discloses an environment-friendly and energy-saving zinc oxide graded collecting device and belongs to the field of a facility for producing a metal oxide by a dry method. The device comprises a rack, a collecting box, a material feeding pipe, air-returning boxes, an air pumping mechanism, a compressed air introducing mechanism and a zinc material separating mechanism, wherein collecting box separating cavities are formed in the collecting box; each collecting box separating cavity consists of a reclaiming cabin and a collecting cabin; a collecting hopper is arranged on the outer wall of the collecting box; a material discharging hopper is arranged at the bottom of the collecting box; a material feeding pipe material outlet is formed in the material feeding pipe; a material feeding pipe material outlet control valve is arranged on the material feeding pipe material outlet; the air-returning boxes correspond to the reclaiming cabins; a zinc material separating mechanism mounting hole is formed in the top plate of the collecting box; the air pumping mechanism is connected with the rear sides of the air-returning boxes; the compressed air introducing mechanism is arranged on the front sides of the air-returning boxes and comprises a compressed air bag, a pulse electromagnetic valve and a pulse air-outtake pipe; the zinc material separating mechanism comprises a Venturi tube, a mouse cage type framework and a sleeving bag. Different using requirements are met; the collecting efficiency is improved, and the production speed of zinc oxide is guaranteed; the grading effect of a zinc oxide product is good; the quality of exhausted air is guaranteed, and a zinc oxide resource is saved.

Description

technical field [0001] The invention belongs to the technical field of dry-process metal oxide production facilities, and in particular relates to an environment-friendly and energy-saving zinc oxide classification collection device. Background technique [0002] Zinc oxide (ZnO) is an oxide of zinc, soluble in acid and strong alkali, but insoluble in water. As a commonly used chemical additive, zinc oxide is widely used in plastics, silicate products, synthetic rubber, lubricants, paints, ointments, adhesives, food, batteries, flame retardants, cosmetics, printing and dyeing, papermaking, enamel And cable cables, and so on. With the continuous acceleration of industrial processes, the demand for zinc oxide continues to increase, and its performance requirements are also increasingly stringent. [0003] There are two main methods of producing zinc oxide, dry method and wet method, but most of them adopt dry method. The dry method has direct method and indirect method. The ...

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Problems solved by technology

[0004] Since the zinc oxide particles directly drawn from the pipeline as a zinc oxide collection device are relatively large, subsequent crushing and / or winnowing processes are required to refine and classify fineness grades according to different uses, resulting in process Lengthy, energy-intensive, and costly

[0005] Figure 4 It is a schematic diagram of a zinc oxide collection device in the prior art. The zinc oxide that is melted from zinc ingots is introduced into the collection bag 9 by the zinc oxide feed pipe 8. Although the structure is simple, due to the oxidation in the zinc oxide feed pipe 8 Zinc flows naturally by the air temperature difference between the hot air and the cold air, so not only the efficiency is low, but also the particle size classification (i.e. quality classification) of the zinc oxide entering the collection bag 9 cannot be carried out. The thickness of the zinc oxide product in the collection bag 9 tends to be the same; in addition, in the zinc oxide collection process, the waste gas discharged outside pollutes the environment. powder), thus causing a waste of resources

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