Heterogeneous multi-layer crucible

Abstract

The invention discloses a heterogeneous multi-layer crucible. The heterogeneous multi-layer crucible comprises a plurality of crucible layers made of different materials, and a sand filling layer is arranged between every two adjacent crucible layers. The heterogeneous multi-layer crucible further comprises a first crucible layer (1), a second crucible layer (3) and a third crucible layer (5), wherein a sand filling layer I (2) is arranged between the first crucible layer (1) and the second crucible layer (3), and a sand filling layer II (4) is arranged between the second crucible layer (3) and the third crucible layer (5). Compared with the prior art, the heterogeneous multi-layer crucible is characterized in that the crucible has multiple layers and is made of different materials, the material with the melting point slightly lower than the boiling point of a material to be heated can be used, the material with a high melting point is not needed, production cost is lowered, and the problems of vessels needed by heating, melting, boiling and volatilization of materials with a high melting point and a high boiling point is resolved. The number of layers and materials of the crucible can be increased and selected according to the needs, the service life is prolonged, and industrial production is facilitated.

Description

technical field [0001] The invention relates to a crucible, in particular to a heterogeneous multilayer crucible. Background technique [0002] A crucible is a vessel or melting tank made of extremely refractory materials, such as clay, graphite, china clay, quartz or refractory metals. In actual scientific research experiments and industrial production, in order to melt, boil and volatilize a substance or a metal with a high melting point, it is necessary to first select a crucible with a melting point higher than the boiling point of the substance or metal, and then put it into the crucible Heating, melting, boiling, volatilization. [0003] At present, although some crucibles have higher melting points, reaching above 1600°C, they still cannot meet the requirements for metals with high boiling points, and the life of crucibles is short, which is not conducive to large-scale industrial production. Contents of the invention [0004] Aiming at the above-mentioned problem...

AI Technical Summary

Problems solved by technology

[0003] At present, although some crucibles have high melting points, reaching above 1600 ° C, they still cannot meet the requirements for metals with high boiling points, and the life of crucibles is short, which is not conducive to large-scale industrial production

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