Copper smelting practice has not changed much over the last century. Little attention has been paid to the gas-fired reverberatory furnace because it has traditionally
One aim of metallurgy research within the Federal Bureau of Mines is the advancing of metals and minerals processing technology to foster the overall goal
During the course of an investigation of the plastic flow of aluminum aircraft sheet under combined loads, several problems arose in which analyses of the
In the quest for technological improvements in the extractive metallurgy of zinc, some efforts have been made to develop a one-step pyrometallurgical process for direct
The earliest known specimen of lead, dating from 2000 B.C., is a figurine found near the Dardanelles at the site of the ancient city of
During electrolysis, metal was produced from solid lead chloride in contact with the cathode rather than from lead in solution. Relatively high current densities—up to
A kinetic investigation of copper cementation on iron was made to study the effects of deposited copper on the reaction rate. Both the copper deposit
Domestically produced primary lead is won from lead sulfide concentrates by a smelting process consisting of sintering, blast furnace reduction with carbon and refining. Unfortunately,
It does not appear likely that this conveyor-system function requirement can be avoided. The emphasis on the continuous miner performance is necessarily such that the
Demand for lead for transportation uses (1) has continued to grow as requirements for batteries have increased. The quantity of lead used in battery manufacturing