4.The author introducd the electric equipment design of ore smelting eutecticum engineering of ore sintering plate, stated the problemes and the countermeasures.
5.Using carburizing agent and devulcanized agent,experiment of carburisation and desulphuration for semisteel which in smelting high titanium slag by electric cooker has been studied.
7.The obtained achievement in building material industry is studied, including sintering cement with substituting coal by cokeite and smelting rockwool with substituting coke by cokeite and so on.
16.Like here, where 19 iron pieces, including this dagger, were found in Tutankhamun's tomb, which was sealed centuries before smelting technology developed in Egypt.
19.Yale historian Joseph Manning, who was not involved in the study, said " Lead released from smelting is the world's first form of toxic or industrial pollution."
20.And we archaeologists have, too, by trying to locate dwellings, evidence of animal domestication, or farming or iron smelting, any signs of early settlement.