Abstract
Precipitation of jarosite as a purifying procedure of the solution obtained after leaching of zinc secondary material Zinc oxide derived from processing of the slime obtained in an industrial process of electrolytic zinc obtaining was leached with the aqueous sulfuric acid solution. The effect of temperature and time on the extent of leaching was determined. The conditions lead to zinc recovery of about 90%. It was found that the extent of arsenic leaching did not depend upon the time and temperature of leaching. Next the conditions of the solution purification procedure were determined. It was found that jarosite formation as well as the degree of arsenic removal is connected with trivalent iron concentration in the solution.
Highlights
In industrial practice zinc secondary materials like zinc scrap or residue obtained in the processes of metallic zinc winning as well as the related processes play more and more role[1 – 3]
The aim of this paper was to determine the efficiency of zinc leaching by sulphuric (VI) acid solutions from zinc oxide deriving from processing slime after zinc electrolysis as well as arsenic removal from the solution at the same time when potassium jarosite precipitation takes place
As it can be seen from this data, time and process temperature have an essential effect on the extent of zinc leaching
Summary
In industrial practice zinc secondary materials like zinc scrap or residue obtained in the processes of metallic zinc winning as well as the related processes play more and more role[1 – 3]. In Great Britain in the process of zinc obtaining about 30% of raw material is substituted by secondary materials. Both of the above mentioned materials are processed more frequently in the hydrometallurgical way. Application of the method is connected with the removal of impurities from the solution because the increase of their concentration in the electrolyte is one of the factors liable for the degeneration of cathode zinc quality. The presence of impurities in the electrolyte impairs the technical and economic indexes of the process of zinc electrodeposition. The undesirable impurities in the electrolyte are Cu, Cd, As, Sb, Fe and the like
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
