History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t4.116
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t4.116
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v1.c13.s2.t4.116
To this powdered mixture sufficient quantity of water was mixed, pelletised to 25-30 mm balls and dried in the Sun. This process of extraction of iron from Biotite has been studied in detail by Jha et al. (1989) and they have concluded that maximum yield of the metal is obtained only by the charge mixed in the above mentioned proportion.