Composite crucible for non-ferrous metal smelting

Abstract

The invention discloses a composite crucible for non-ferrous metal smelting. The composite crucible for non-ferrous metal smelting comprises a crucible body and a crucible cover, wherein the crucible body comprises an inner shell and an outer shell, the inner shell and the outer shell are both of a hollow cylindrical structure, the inner shell is nested in the outer shell, the part, higher than the upper surface of the outer shell, of the upper surface of the inner shell is an extension part, the longitudinal height of the extension part is 10-30 mm, the crucible cover comprises a fixed outer ring and a fixed inner core, the fixed inner core is sleeved and fixed in the fixed outer ring, the lower surface of the fixed inner core extends downwards to be provided with a boss, an installation interval is formed between the outer side face of the boss and the inner side face of the fixed outer ring, and the installation interval is clamped with the extension part in a matched mode. The composite crucible for non-ferrous metal smelting has the characteristics of being high in oxidation resistance, high in strength and long in service life, and meanwhile, the purity of a metal solution in the smelting process of a metal material can be improved.

Description

technical field [0001] The invention belongs to the field of metal smelting, and in particular relates to a composite crucible for nonferrous metal smelting. Background technique [0002] When melting non-ferrous metals in small batches, crucibles are usually used for smelting. The current non-ferrous metal melting crucibles usually use graphite crucibles with high thermal conductivity and good chemical stability to metal melts, but the strength of graphite crucibles is relatively low. It is very easy to break due to external force factors such as impact during use and handling. [0003] At the same time, when the graphite crucible is heated by direct contact with flame blowing, the graphite crucible is easily deteriorated and damaged due to the oxidation of carbon elements at high temperatures. Therefore, graphite crucibles are not suitable for working conditions such as direct contact with flame blowing, which greatly limits Application scenarios of graphite crucible. ...

AI Technical Summary

Problems solved by technology

[0002] When melting non-ferrous metals in small batches, crucibles are usually used for smelting. The current non-ferrous metal melting crucibles usually use graphite crucibles with high thermal conductivity and good chemical stability to metal melts, but the strength of graphite crucibles is relatively low. Very easy to break due to impact and other external factors during use and handling

[0003] At the same time, when the graphite crucible is heated by direct contact with flame blowing, the graphite crucible is easily deteriorated and damaged due to the oxidation of carbon elements at high temperatures. Therefore, graphite crucibles are not suitable for working conditions such as direct contact with flame blowing, which greatly limits Application scenarios of graphite crucible

[0004] At the same time, the current graphite crucible smelts non-ferrous metals, and cannot remove impurities and purify the molten metal during the smelting process, which will affect the smelting of some precious metals that have higher requirements for purity.

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