A device for removing low-density scum in metal refining process

Abstract

The invention relates to a device for removing low-density scum in the metal refining process, which belongs to the technical field of metal smelting. The device for removing low-density scum in the metal refining process includes a fume hood, an exhaust hood, a fixed pipe, and a cooler , dust collector, induced draft fan, dust outlet pipe, air inlet pipe, air duct, and a fixed adjustment device that can fix and adjust the position of the flue gas hood. The low-density slag removed by the present invention can be directly processed in the rotary kiln process, reducing a pretreatment process, which can greatly reduce the cost of production operations; The loss caused by the flying metal dust of slag; the number of staff can be greatly reduced, saving labor costs and improving economic benefits. At the same time, the invention also improves the mechanical automation level of the slag removal operation, reduces the intensity of repeated slag removal operations by employees, and improves production efficiency.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a device for removing low-density scum in a metal refining process. Background technique [0002] In the process of metal refining and de-impurification, all kinds of impurity metals basically exist in the form of elemental substances and oxides. Different production companies will refine crude metals according to market requirements, and the process of separating other metals is called de-impurification. In the process of impurity removal, it is necessary to add different types and quantities of additives to generate scum with low density and high melting point. In the process of removing slag, a large amount of flying is generated due to the fine particle size and low density of a large amount of scum, and the fine slag that has not been removed goes to the next process to increase the cost. [0003] Taking the tin refining process as an example, when crude ...

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Problems solved by technology

[0003] Taking the tin refining process as an example, when refining crude tin to remove impurities such as arsenic, antimony, and copper, materials such as aluminum particles, sulfur, ammonium chloride, and sawdust should be added to form high melting point, low-density scum that floats on the tin. On the liquid surface, manual slag removal is usually used, and a large amount of dust will be generated during the slag removal and slag dumping process. The working environment is poor, and the slag removal rate basically does not exceed 80%.

[0004] The low-density slag produced by de-impurity has small density and fine particle size. During the process of slag removal, transportation and slag dumping, the dust is large, and the working environment is poor. As the country pays more and more attention to environmental protection and employees' physical and mental health, such The working environment does not meet the environmental protection requirements and is not conducive to the physical and mental health of employees

At the same time, because the scum cannot be completely removed, the workload of the next process and the cost of production operations and technical quality indicators will be increased.

In addition, the ultra-fine slag will flow out of the funnel hole during the slag removal process, and employees need to repeatedly remove the slag, which is labor-intensive and inefficient

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