Resource utilization device for arsenic-containing waste

Abstract

The arsenic-containing waste resource utilization device comprises an outer shell, a mounting frame and an arsenic removal treatment device are fixedly mounted in the outer shell, a quantitative feeding mechanism is arranged at the top of the outer shell, a discharging opening in the lower end of the quantitative feeding mechanism is rotationally connected to a selective feeding structure, and the mounting frame comprises an annular frame; a plurality of hot phase separation devices are evenly arranged on the outer side of the annular frame in the circumferential direction, each hot phase separation device is provided with a feeding port, the feeding ports are in separable butt joint with a feeding port of the selective feeding structure, and a plurality of mixing and stirring devices in one-to-one correspondence with the hot phase separation devices are arranged on the outer side of the arsenic removal treatment device; and the bottom of the mixing and stirring device is communicated with the inner cavity of the arsenic removal treatment device through a channel provided with an electric control valve. According to the invention, the cured material can be continuously supplied and subjected to a series of process steps of thermal phase separation, additive mixing and arsenic removal treatment, and a fault device can be skipped for continuous treatment, so that the influence of faults on the treatment efficiency is reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a resource utilization device for arsenic-containing waste. Background technique [0002] Arsenic-containing hazardous waste mainly comes from the non-ferrous metal smelting industry and the phosphorus chemical industry. As an associated element of lead, zinc, copper and other minerals, arsenic is released from the minerals during the smelting process. The arsenic sulfide slag and arsenic-containing alkali slag produced during the smelting process are the main arsenic-containing hazardous wastes. These arsenic-containing wastes are matured by adding sulfur-mediated biological agents, and the matured materials are subjected to thermal phase separation, mixed with coke and other additives, and then heated for dearsenic treatment, which can selectively volatilize arsenic trioxide. Low-arsenic material and pyrite are mixed in a certain proportion and the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a resource utilization device for arsenic-containing waste, which is used to solve the problem of poor continuity of the treatment process in the prior art in the process of thermal phase separation to arsenic removal of the cured material, and it is easy to cause local problems. Technical issues affecting the operation of the entire system

Images