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The influence of the conditions and worktime on the waste vanadic catalyst amount

100%
Grzesiak P., Motała R., Grobela M., Trypuć M., Mazurek K.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 3
73-76
EN
This paper includes the research results of the vanadic catalyst study that was operated in PCC Rokita S.A. during a gaseous SO3 formation. The physical properties have been studied: mechanical strength, bulk density and grindability during the five-year cycle of the catalyst worktime. The studies presented underline the prediction of the amount of the formed vanadic waste material.
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Extraction of vanadium compounds from the used vanadium catalyst with the potassium hydroxide solution

61%
Mazurek K., Białowicz K., Trypuć M.
Polish Journal of Chemical Technology
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2010
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vol. 12
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issue 1
23-28
EN
The paper presents the results of the research on the degree of the recovery of vanadium(V) from the used vanadium catalyst with the use of KOH solution. The extraction was performed at 293 - 323 K, for 0.5 to 4 h and the catalysts of the variable grain diameter. The concentration of the extracting solution was varied in the range 5 - 20%. The optimal ratio of solid to liquid phase S/L was determined. Additionally the degree of the recovery of total iron ions was presented.
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