Transactions of the INDIAN CERAMIC SOCIETY Vol. 10 1951
Graphite Crucibles for Mirzapur Brass Melting
Industry from Indian Raw Materials.
Bhan Bhushan and H. N. Roy
Pages : 105-127
DOI : 10.1080/0371750X.1951.10877544
Abstract
Utensils of brass and other alloys are made in India
on a cottage industry basis. Graphite crucibles used for
melting these alloys are mostly imported. An attempt has been
made to use Indian graphite and clay in making efficient crucibles
on cottage industry basis to replace the imported variety.
Samba/pur and Titlagarh flake graphites can be used with
satisfactory results by using highly plastic Mugma or Jubbalpur
fireclay as bonding agent. Where the flakes are oriented parallel
to the walls of the crucible, the surface oxidation rate is much
slower. Limited use of sodium silicate gives very good strength
in the green stage. Microscopic examination shows that such an
arrangement of flakes with clay and sodium silicate as a bond
gives a very compact and strong structure.