Process for making green briquettes for forming Si or SiC

Details Process for making green briquettes for forming Si or SiC Process for making green briquettes for forming Si or SiC

1988-07-18

1990-12-04

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

With carbonizing, then adding carbonizable material and...

264 63, 264234, C01B 3100

Patent

active

049752260

ABSTRACT:
A process and apparatus for the preparation of green briquettes for the production of silicon or silicon carbide or ferrosilicon in electric pit furnaces, quartz sand, a carbon carrier and a bituminous binder being mixed together, the mixture being shaped into blanks from which the green briquettes are formed by heat treatment. The process is performed with the use of blanks which are free from melted bituminous caking coal and whose specific weight is made greater than the bulk density of quartz sand by adjustment of the proportions of the mixture and by compacting. The blanks are introduced for the heat treatment into a heated rotating drum furnace whose lower part is filled with quartz sand to an extent such that the heat treatment proceeds in a dip bed of quartz sand.

REFERENCES:
patent: 4364974 (1982-12-01), Lask
patent: 4366137 (1982-12-01), Lask
patent: 4820341 (1989-04-01), Lask

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