Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Reverse flotation : a novel process for the beneficiation of fine coal
Bibliography: pages 157-162.
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Chemical Engineering
2016
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867614394327760896 |
|---|---|
| access_status_str | Open Access |
| author | Stonestreet, Paul |
| author2 | Franzidis, Jean-Paul |
| author_browse | Franzidis, Jean-Paul Stonestreet, Paul |
| author_facet | Franzidis, Jean-Paul Stonestreet, Paul |
| author_sort | Stonestreet, Paul |
| collection | Thesis |
| description | Bibliography: pages 157-162. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21990 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:51:20.821Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Chemical Engineering |
| publisherStr | Department of Chemical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/21990 Reverse flotation : a novel process for the beneficiation of fine coal Stonestreet, Paul Franzidis, Jean-Paul Chemical Engineering Bibliography: pages 157-162. The beneficiation of ultrafine coal by froth flotation is a widely used process, and its importance for the treatment of -0.1 mm coal has been appreciated of late in South African coal washing plants. A number of problems adversely affect the efficiency of this process, such as poor liberation, poor floatability, gangue entraiment/entrapment, and high mass recovery which can lead to throughput limitations in coal flotation equipment. Reverse coal flotation is a novel process which has been proposed to address three problems occurring in the conventional, "forward flotation" of coal, namely: high mass recovery, gangue entrainment and the variability of floatability of South African coals. In this process, the entire gangue fraction in the coal would. be floated in a single step process, with the clean coal product reporting as the tailings. To the author's knowledge, no_ such process has been investigated previously for coal flotation. In this thesis, a reverse flotation process for ultrafine coal beneficiation was developed from first principles. In order to obtain a clear understanding and interpretation of experimental flotation results, artificial feed mixtures consisting of blends of "pure" gangue and "pure" coal were used for a large section of the experimental testwork. Having established the technical viability of the process on these artificial mixtures, the flotation work was extended to four South African run-of-mine coals. The study comprised the selection of suitable reagents for reverse flotation and the evaluation of these reagents experimentally. Experimental testwork comprised batch adsorption tests, and flotation tests in a conventional, sub-aeration laboratory batch cell and in a laboratory column flotation cell. The process was evaluated in terms of coal recovery into the product and gangue removal in the waste stream, and its metallurgical performance was compared to conventional flotation using both the artificial feeds and r.o.m. coals. 2016-09-28T19:06:19Z 2016-09-28T19:06:19Z 1991 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/21990 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Stonestreet, Paul Reverse flotation : a novel process for the beneficiation of fine coal |
| thesis_degree_str | Doctoral |
| title | Reverse flotation : a novel process for the beneficiation of fine coal |
| title_full | Reverse flotation : a novel process for the beneficiation of fine coal |
| title_fullStr | Reverse flotation : a novel process for the beneficiation of fine coal |
| title_full_unstemmed | Reverse flotation : a novel process for the beneficiation of fine coal |
| title_short | Reverse flotation : a novel process for the beneficiation of fine coal |
| title_sort | reverse flotation a novel process for the beneficiation of fine coal |
| topic | Chemical Engineering |
| url | http://hdl.handle.net/11427/21990 |
| work_keys_str_mv | AT stonestreetpaul reverseflotationanovelprocessforthebeneficiationoffinecoal |