Physico-chemical Behaviour of Southern Indian Graphite Used for Refractory Manufacture

A. K. Bhattacharya1, António Tomás da Fonseca2

1 RDCIS, SAIL, Ranchi 834002/India
2 Indian School of Mines, Dhanbad 826004/India

Revision

Volume 5, Issue 1, Pages 79 - 82

Abstract

Graphite is a soft, black crystalline form of naturally occurring carbon. In India it is abundantly available and there are three major sources namely Palamau of Jharkhand, Bolangir of Orissa and Sivaganga of Tamil Nadu. Refractory industry is the major consumer of graphite and in India Palamau and Tamil Nadu sources are used as additive for refractory industry. In this paper an attempt has been made to investigate the physico-chemical properties of Tamilnadu graphite and also behaviour of the graphite in oxidising atmosphere was investigated.Oxidation behaviour was studied in DTA/TGA by oxidising two size fractions of the graphite in controlled atmosphere to understand the effect of size on oxidation and it was found that the behaviour is independent of the size fractions considered for investigation.

Keywords

graphite, physico-chemical, behaviour, India

References

 

[1] Indian Mineral Book. Indian Bureau of Mines, Nagpur

[2] Bailer, J.C. et al. (Ed.): Comprehensive inorganic chemistry. Vol. I. 1973, 1178

[3] Adschiri, T.; Furusawa, T.: Relation between CO2- reactivity of coal char and BET surface area. Fuel 65 (1986) [7] 927

[4] RDCIS-NML Jt. project report on “Increasing oxidation resistance of carbon/graphite products by high temperature heat treatment“. Report No. 2384, March 1995

[5] Bandopadhyay, D.: Kinetics of gasification of carbon and carbothermic reduction of iron oxide, PhD-Thesis, IIT Kanpur, 1989

[6] Ozgen, O.S.; Rand, B.: Kinetics of oxidation of the graphite phase in alumina/graphite materials. Brit. Ceram. Trans. J. 84 (1985) 70–76

[7] Walker Jr., P.L.; Rusinko Jr., F; Austin, L.G.: Chemistry and physics of carbon. Advances in Catalysis 2 (1966) 275

 

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