The relative effectiveness of anionic and nonionic polyacrylamide in enhancing the settling rate of flotation tailings was studied by performing batch settling tests. Anionic polyacrylamide was found to be more effective than nonionic polyacrylamide. A liquid flocculant was found to give lower settling rates than dry flocculants due to a lower polyacrylamide content. The aging of tailings resulted in increased settling rates. Residual polyacrylamide was detected in the supernatant water even at low flocculant addition rates and reached significant concentrations before the optimum addition rate was attained.
The effect of polyacrylamide on flotation of a copper-molybdenum ore was investigated in a series of batch flotation tests. Flocculant concentrations up to 10 parts per million did not lower either concentrate grade or recovery. The presence of an oil phase from the liquid flocculant also had no noticeable effect on flotation. / Applied Science, Faculty of / Mining Engineering, Keevil Institute of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/32624 |
| Date | January 1973 |
| Creators | Vreugde, Morris Johannes Aloysius |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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