| 摘要 |
FIELD: construction material industry. SUBSTANCE: vessel has walls and bottom manufactured from precious metals, and cover made from silicon nitride-based ceramic material. Cover and wall thickness ratio is from 5:1 to 20: 1. Slot may be formed in lower part of cover, along perimeter thereof, for connecting cover with casing walls. Platinum or other precious metals are used for manufacture of vessel walls and bottom. EFFECT: increased service life of vessel, reduced loss of precious metals and increased processibility. 2 cl, 1 dwg
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