Bioflotace uhlí

Abstract

The Diploma Thesis deals with application of bioflotation on samples of brown and black coal. The bacteria of Acidithiobacillus ferrooxidans were used for the purposes and the effect of bacterial action (0-24 hours) on the results of flotation was observed. The acquired results imply that bacterial action manifested itself in a negative way on the black coal samples (drawn in the localities of Marcel Mine and Zczyglowice); in principle, there was a lower concentrate yield and the ash and sulphur contents were higher. On the other hand, the results of bioflotation using brown coal samples drawn from ČSA Mine in Most brought positive results and it is apparent that even short-term action of the bacteria, i.e. 30 minutes, is able to increase the concentrate yield and improve the concentrate quality, which means that both the contents of ash and sulphur were lower.