History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t4.197
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c13.s2.t4.197
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v1.c13.s2.t4.197
Fig. 41. Stone Pestal and Hammer used by ancient Zn smelters at Zawar During this process Pyrite helped in the transfer of sulphur from Zn and Pb etc. to Fe to form FeS or finally get converted into FeO releasing SO₂ gas.