Flotation separation of Na-feldspar from K-feldspar by monovalent salts

Demir, Cengiz; Abramov, A. A.; Çelik, M.S.

doi:10.1016/s0892-6875(01)00069-3

Cited by 39 publications

(30 citation statements)

References 6 publications

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“…The positive sites are mostly Na + ions in albite and K + ions in orthoclase and the negative sites are polar silanol groups or nonpolar siloxane groups [1]. The electrostatic charge is mainly a function of pH.…”

Section: Electrokinetic Measurementsmentioning

confidence: 99%

“…2 indicates that increasing the concentration of amine increases the flotation recovery of albite and orthoclase. But the curves without NaCl practically overlap, supporting the electrokinetics measurements given in Fig 1. As emphasized by different researchers [1,2,[36][37][38][39], the addition of salts (NaCl) induces a difference in flotation recoveries between these two minerals. Depending on the chemical and mineralogical composition particularly of orthoclase, the differences of floatabilities in NaCl solutions is amplified [1].…”

Section: Microflotation Testsmentioning

confidence: 99%

“…In a significant proportion of feldspar ores, Na-feldspar (albite, NaAlSi 3 O 8 ) and K-feldspar (KAlSi 3 O 8 , microcline or orthoclase) exist in the same matrix. The separation of feldspar minerals by flotation is challenging due to their identical crystalline structures and close similarities in their physical and chemical properties [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…The contact angle of a liquid on a solid for thin-layer wicking measurement is given by the Washburn equation [14], (1) …”

Section: Introductionmentioning

confidence: 99%

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Effect of electrolyte on surface free energy components of feldspar minerals using thin-layer wicking method

Karagüzel

Can

Sönmez

et al. 2005

Journal of Colloid and Interface Science

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Section: Electrokinetic Measurementsmentioning

confidence: 99%

Section: Microflotation Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The contact angle of a liquid on a solid for thin-layer wicking measurement is given by the Washburn equation [14], (1) …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of electrolyte on surface free energy components of feldspar minerals using thin-layer wicking method

Karagüzel

Can

Sönmez

et al. 2005

Journal of Colloid and Interface Science

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“…Even the separation of Na-feldspar from K-feldspar is possible by flotation using monovalent salts (Demir et al, 2001) and Dogu and Arol (2004) found that it was possible to separate the dark coloured minerals from the feldspar by flocculation using starch.…”

Section: Introductionmentioning

confidence: 99%

The exploitability of pegmatite deposits in the lower Orange River area (Vioolsdrif - Henkries - Steinkopf)

Minnaar¹,

Theart²

2006

South African Journal of Geology

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U Un ni iv ve er rs si it ty y o of f P Pr re et to or ri ia a e et td d, , M Mi in nn na aa ar r H H ( (2 20 00 06 6) )The exploitability of pegmatite deposits in the lower Orange River area REFERENCES PLATES APPENDICESU Un ni iv ve er rs si it ty y o of f P Pr re et to or ri ia a e et td d, , M Mi in nn na aa ar r H H ( (2 20 00 06 6) ) AbstractThis study aims to investigate the exploitability of the pegmatite deposits in the lower Orange River area, situated between the settlements of Vioolsdrif, Henkries and Steinkopf in the Northern Province, in the light of current methods of financial analysis. A summary of the prevailing ore deposit model and a description of the geology are presented, and a financial analysis is undertaken taking into account the resources, current market conditions, and the legal requirements associated with a mining venture on the pegmatite bodies.The most acceptable ore deposit model for the formation of pegmatites currently presents the pegmatite body as the final stage of crystallization of a cooling magma (Cerny, 1998a). Recent studies suggest that the crystallization of the pegmatite occur at an unexpectedly fast rate by the working of undercooling, in which the rate of cooling exceeds the rate of crystallization (London, 2005).The pegmatites of the study area are mostly developed in granites of the Vioolsdrif Suite, in a post-orogenic tectonic setting and in many respects, fit well into the model of Ginsburg et al. (1979).Although resources are difficult to estimate, it can be said that individual pegmatite bodies in the study area host reserves of up to 50 Mt of pegmatite ore. The markets for feldspar, currently the primary commodity in pegmatites, show an increase in price and a positive outlook for the future.Legal requirements (licensing) are rigorous, under the new Act even more so than under the old, especially with regard to environmental issues.A financial analysis suggests that, although mining operations on pegmatite bodies are highly sensitive to changes in commodity prices, revenue and fuel-related expenses, they are feasible under the current market conditions. U Un ni iv ve er rs si it ty y o of f P Pr re et to or ri ia a e et td d, , M Mi in nn na aa ar r H H ( (2 20 00 06 6) )Zebrakop pegmatite is identified in this study as a potential target for the exploitation of a homogeneous pegmatite, coupled with the necessary development of bulk mining methods and a beneficiation plant.U Un ni iv ve er rs si it ty y o of f P Pr re et to or ri ia a e et td d, , M Mi in nn na aa ar r H H ( (2 20 00 06 6) ) 1 CHAPTER 1. INTRODUCTIONAccording to Cerny (1998a, p. 29), small scale mining of pegmatite deposits at communal to family scale, contributes a significant proportion of world production of some of the pegmatite-derived commodities.The pegmatites of the Vioolsdrif -Steinkopf -Henkries area in the Northern CapeProvince, have historically provided a sporadic source of income. They are hosts to a wide variety of economic minerals and at times in history were the source of...

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Assessment of radium‐226 bioavailability and bioaccumulation downstream of decommissioned uranium operations, using the caged oligochaete (Lumbriculus variegatus)

Wiramanaden

Orr

Russel

2015

Enviro Toxic and Chemistry

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The present study investigated the integrated effects of several geochemical processes that control radium-226 ((226) Ra) mobility in the aquatic environment and bioaccumulation in in situ caged benthic invertebrates. Radium-226 bioaccumulation from sediment and water was evaluated using caged oligochaetes (Lumbriculus variegatus) deployed for 10 d in 6 areas downstream of decommissioned uranium operations in Ontario and Saskatchewan, Canada. Measured (226) Ra radioactivity levels in the retrieved oligochaetes did not relate directly to water and sediment exposure levels. Other environmental factors that may influence (226) Ra bioavailability in sediment and water were investigated. The strongest mitigating influence on (226) Ra bioaccumulation factors was sediment barium concentration, with elevated barium (Ba) levels being related to use of barium chloride in effluent treatment for removing (226) Ra through barite formation. Observations from the present study also indicated that (226) Ra bioavailability was influenced by dissolved organic carbon in water, and by gypsum, carbonate minerals, and iron oxyhydroxides in sediment, suggestive of sorption processes. Environmental factors that appeared to increase (226) Ra bioaccumulation were the presence of other group (II) ions in water (likely competing for binding sites on organic carbon molecules), and the presence of K-feldspars in sediment, which likely act as a dynamic repository for (226) Ra where weak ion exchange can occur. In addition to influencing bioavailability to sediment biota, secondary minerals such as gypsum, carbonate minerals, and iron oxyhydroxides likely help mitigate (226) Ra release into overlying water after the dissolution of sedimentary barite. Environ Toxicol Chem 2015;34:507-517. © 2014 SETAC.

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Flotation separation of Na-feldspar from K-feldspar by monovalent salts

Cited by 39 publications

References 6 publications

Effect of electrolyte on surface free energy components of feldspar minerals using thin-layer wicking method

Effect of electrolyte on surface free energy components of feldspar minerals using thin-layer wicking method

The exploitability of pegmatite deposits in the lower Orange River area (Vioolsdrif - Henkries - Steinkopf)

Assessment of radium‐226 bioavailability and bioaccumulation downstream of decommissioned uranium operations, using the caged oligochaete (Lumbriculus variegatus)

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