- Title
- Investigating the flotation recovery of silica by using hydrogen gas
- Creator
- Sarkar, Md. Shahjahan Kaiser Alam; Evans, G. M.; Donne, S. W.
- Relation
- CHEMECA 2009 Conference. CHEMECA 2009: Engineering Our Future: Are We Up to the Challenge?: CD with Proceedings (Perth, W.A. 27-30 September, 2009)
- Relation
- http://www.icms.com.au/chemeca2009/abstract/241.asp
- Publisher
- Engineers Australia
- Resource Type
- conference paper
- Date
- 2009
- Description
- In this study, a laboratory flotation machine (Denver, type D12) was used to compare the efficiency of silica flotation using hydrogen and air. All the experimental parameters (pH of the suspension, gas flow rate, concentration of collector and frother, solids concentration, particle size and speed of impeller) except the choice of gas were kept the same for both sets of experiments. Similar recovery was determined using both gases. Due to its composition, molecular hydrogen gas does not bring significant changes on silica surface compared to air. It is evident that silica is insensitive to the choice of gas input (hydrogen or air) and it can be concluded that the benefit of using hydrogen produced via electrolysis to float silica is linked only to the production of smaller bubble size.
- Subject
- adsorption; collector; contact angle; flotation recovery; gas flow; silica surface; depression effect; surface chemistry
- Identifier
- uon:8963
- Identifier
- http://hdl.handle.net/1959.13/919722
- Identifier
- ISBN:9780858259225
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