Process for the compression of black powder

Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Plural – intermittent pressure applying

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264 3R, 425335, 425364R, 425371, 425373, B29J 510

Patent

active

040839125

ABSTRACT:
A novel method for the continuous production of compressed higher density black powder comprising feeding from a feed container means mealy black powder of low density enclosed between upper and lower endless belts into a precompression zone, to produce precompressed black powder, and to expell air contained in said black powder, passing the precompressed black powder through a primary compressing zone containing a primary compression means to achieve a new orientation and displacement of the said black powder, then passing the black powder through a final compressing zone containing a final compression means, while supplying the final pressure to obtain breaking or flow of the crystals as well as crystal lattice displacements of said black powder, and recovering the compressed higher density black powder, each of said primary compression means and said final compression means being capable of building-up compaction pressure as well as being capable of idling, the black powder being moved through said precompression zone, said primary compressing zone and said final compressing zone by synchronized lateral movement of said primary and final compression means towards and away from each other and said black powder being withdrawn from said feed container means onto said lower belt by said movement of said primary and final compression means, whereby the build-up of compaction pressure and the idling time of each of said primary and final compression means is synchronized with the forward movement of said black powder caused by the advancing movement of said primary and final compression means.

REFERENCES:
patent: 2356826 (1944-08-01), Coss
patent: 2677334 (1954-05-01), Hansen
patent: 3071805 (1963-01-01), Merkle

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