Betterton–Kroll process
INDUSTRIAL PROCESS FOR REMOVING BISMUTH FROM LEAD
Betterton Kroll process; Kroll Betterton process; Kroll-Betterton process; Betterton-Kroll Process; Betterton-Kroll process
The Betterton-Kroll Process is a pyrometallurgical process for refining lead from lead bullion(lead that still contains significant amounts of impurities). Developed by William Justin Kroll in 1922, the Betterton–Kroll process is one of the final steps in conventional lead smelting.