Preparation of carbon microballoons

Details Preparation of carbon microballoons Preparation of carbon microballoons

B - Operations, Transporting

01

J

18/1

B01J 13/02 (2006.01) C01B 31/02 (2006.01) C04B 35/52 (2006.01) C10C 3/14 (2006.01)

Patent

CA 1245815

ABSTRACT Carbon microballoons are prepared by atomizing a pitch in admixture with a low-boiling organic solvent as a foaming agent into particles having a size in the range from 4,760 µm to 32 µm, flash heating the atomized pitch at a temperature higher than the boiling point of the low-boiling organic solvent to cause foaming, thereby forming pitch microballoons, treating the pitch microballoons with an oxidizing gas or liquid to make them infusible, and sintering the infusible microballoons in a non-oxidizing atmosphere for carbonization.

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