c22b 30 obtaining antimony arsenic or bismuth
C22B 30 - Obtaining antimony, arsenic or bismuth - Patents . - GooglePatents for C22B 30 - Obtaining antimony, arsenic or bismuth (1,043). 02/2015. 02/24/2015, US8960444 Method for separating arsenic mineral from copper-bearing material with high arsenic grade. 02/04/2015, CN104328289A A vacuum refining process of crude antimony lead.c22b 30 obtaining antimony arsenic or bismuth,c22b 30 obtaining antimony arsenic or bismuth,CPC Definition - C22B PRODUCTION AND REFINING OF METALS .C22B also possesses groups for obtaining metals including obtaining metals by chemical processes, and obtaining metal compounds by metallurgical processes. . Furthermore, although compounds of arsenic and antimony are classified in C01G, production of the elements themselves is covered by C22B, as well as the.US6495024B1 - Method for the removal of arsenic from sulfuric acid .In the extraction process arsenic can be obtained as a diluted arsenic acid-sulfuric acid solution, out of which arsenic is to be precipitated. The problem with the process is that the antimony and bismuth contained in the electrolyte precipitate at the extraction stage, and the precipitation produced thereby disturbes the.