PROCEDURE FOR OBTAINING ARSENIC TRIOXIDE FROM ALKALINE LIQUORS WITH A HIGH ANTIMONY-CONTENT.

摘要

Is related to the Metallurgical Industry, in particular to a process for the production of Arsenic trioxide for more than 90% ofPurity, the leaching of arsenical Waste, constituted mainly by Chem As 2 / a SB SB SB or 3 / / a SB Chem, 2 Chem SB / SB SB or 3 / / a SB Chem, leached from 93 to 97 and 50 to 60% of the carrier phases of arsenic and antimony, respectively.From the Alkaline Solution containing 160 to 200 g / l of as (iii) and 10 to 14 g / l of SB (iii) and by appropriately combining theThe solid-liquid ratio increase with the decrease of pH of the solution, can be separated by Filtration.More than 94% of antimony in the form of 2 Chem SB SB / SB SB s 3 / / a SB Chem and subsequently by evaporation of the filtrate until1 / 5 of the total mass is obtained Chem As 2 / a SB SB SB or 3 / / a SB Chem.This procedure is applicable to materials containing Precious Metals that cannot be extracted by cianurizacion,Due to the high concentration of arsenic and antimony in the same.Its application allows to separate in a very simple mannerSB (iii) and as (iii) obtain Chem As 2 / a SB SB or SB Sb 3 / / a Chem with low content of antimonyFrom which we can obtain the pure Metal and other Salts. !