Talk Flotasyonuna Etki Eden Bazı Değişkenlerin Etkilerinin İncelenmesi

Öz

Talk; jeolojik olarak düşük dereceli metamorfizma sonucu oluşan bir minerallerden birisi olup olup magnezyumca zengin ultramafik kayaçlardan türer. Bu eşsiz mineral; seramik, kozmetik, boya, kağıt, plastik, çatı kaplama ve lastik sanayinin yanı sıra hayvan yemi, polimer ve deterjan üretiminde de kullanılmaktadır. Talk, hidrofobik özelliğinden dolayı hiçbir toplayıcı (kollektör) kullanmadan kolaylıkla yüzebilme yeteneğine de sahiptir. Her ne kadar talkın sadece köpürtücü ile flotasyonu sağlansa da; reaktif olarak toplayıcı, köpürtücü ve bastırıcılar da kullanılmaktadır. Bu çalışmada, Sivas yöresinden temin edilen talkın flotasyon ile zenginleştirilmesinde etkili olan parametrelerden pH, toplayıcı, köpürtücü, bastırıcı türü ve miktarlarının verim üzerindeki etkileri araştırılmıştır. Flotasyon deneylerinde toplayıcı olarak gazyağı; köpürtücü olarak ise çamyağı, flotanol B, montanol 800, aerofroth 73 ve aerofroth 88 kullanılmıştır. Bastırıcı olarak dekstrin ve nişasta araştırılmıştır. Toplayıcı cinsinin zenginleştirmeye olan etkisinde; gazyağının iyi sonuç vermediği görülmüştür. Köpürtücü olarak aerofroth 88 en iyi sonucu verirken; talkın bastırılması için en etkin reaktif dekstrin olarak belirlenmiştir.

Anahtar Kelimeler

• Talk
• Flotasyon
• Toplayıcı
• Köpürtücü
• Bastırıcı

Investigation of Effects of Some Variables on Talc Flotation

Öz

Talc is one of low grade metamorphic minerals geologically and derive from ultramafic rocks enriching Mg. In addition to industries of ceramic, cosmetic, paint, paper, plastic and roofing, this unique mineral are also used in production of animal feeds, polymer and detergent. Talc has also easily floating talent due to its hydrophobic feature without using any collector. In spite of the fact that flotation of talc is only provided by frother; collectors, frothers and depressants are used as reactive. In this study; flotation effects of talc samples gathering from Sivas region were investigated considering that pH values, types and amounts of collector, frother, and depressants as an effective parameters. Kerosene as collector; pine oil, flotanol B, montanol 800, aerofroth 73 and aerofroth 88 as frothers were used in flotation experiments. The effect of dextrine, starch as depressants were also studied in detail. Kerosene on benefication of collector effect were observed no satisfactory results. It is determined that aerofrothe 88 give best result as frother, the most reactive depressor is also dextrine.

Anahtar Kelimeler

• Talc
• Flotation
• Collector
• Frother
• Depressant

Kaynakça

1. Akdemir Ü, Güler T, Yıldıztekin G. 2005. Flotation and entrainment behavior of minerals in talc-calcite separation, Scandinavian Journal of Metallurgy, 34, 241–244. doi.org/10.1111/j.1600-0692.2005.00724.x.
2. Alnak DE, Koca F, Alnak YA. 2021. Numerical investigation of heat transfer from heated surfaces of different shape, Journal of Engineering Thermophysics, 30, 494-507. doi.org/10.1134/ S1810232821030127.
3. Atak S. 1990. Flotation: Principles and Practice, İTÜ Vakfı, Kitap Yayın No.34.
4. Bazar JA, Rahimi M, Fathinia S, Jafari M, Chipakwe V, Chelgani SC. 2021. Talc flotation – An overview, Minerals, 11 (7), 662. doi.org/10.3390/min11070662.
5. Cebeci Y, Aslan N, Sönmez İ, Kuvvetli AA. 1999. Koyulhisar Pb-Cu-Zn cevherinin gum arabic ile optimum selektif flotasyon koşullarının belirlenmesi, DEÜ Mühendislik Fakültesi, Fen ve Mühendislik Dergisi, 1(3), 47-58.
6. Charnay C, Lagerge S, Partyka S. 2001. Assessment of the surface heterogeneity of talc materials, Journal of Colloid and Interface Science, 233, 250–258. doi.org/10.1006/jcis.2000.7259.
7. Chiem LT, Huynh L, Ralston J, Beattie DA.2006. An in situ ATR–FTIR study of polyacrylamide adsorption at the talc surface., Journal of Colloid and Interface Science, 297, 54–61. doi.org/10.1016/j.jcis.2005.10.037.
8. Ersoy B.2011. Influence of pH and chloride-based metal salts on coagulation/dispersion behavior of talc suspension, Separation Science and Technology, 46, 1519–1527. doi.org/10.1080/01496395.2011.562271.

9. Feng B, Peng J, Guo W, Zhang W, Ai G, Wang H. 2018. The effect of changes in pH on the depression of talc by chitosan and the associated mechanisms, Powder Technology, 325, 58–63. doi.org/10.1016/j.powtec.2017.11.005.
10. Gavira A, Frances P.2008. Rocks & Minerals, Dorling Kindersley Limited, ISBN 978-1-4053-2831-9.
11. Gibson B, Wonyen DG, Chelgani, SCA. 2017. A review of pretreatment of diasporic bauxite ores by flotation separation, Minerals Engineering, 114, 64–73. doi.org/10.1016/j.mineng.2017.09.009.
12. Gomes LMB, Oliveira JF.1991. The control of natural floatability of talc with carbox-ymethyl cellulose and aluminium chloride. In: Fine Particles Processing Flotation, Proceedings of the 17th Int. Mineral Processing Congress, Dresden, September 23-28, 353–364.
13. Hadipour A, Zargarabadi MR. 2018. Heat transfer and flow characteristics of ımpinging jet on a concave surface at small nozzle to surface distances, Applied Thermal Engineering, 138, 534-541. doi.org/10.1016/j.applthermaleng.2018.04.
14. Khraisheh M, Holland C, Creany C, Harris P, Parolis L. 2005. Effect of molecular weight and concentration on the adsorption of CMC onto talc at different ionic strengths, International Journal of Mineral Processing, 75 (3–4), 197–206. doi.org/10.1016/j.minpro.2004.08.012.
15. Kumar SH, Singh KJ, Somani AK. 2016. Estimatation of talc properties after milling, AIP Conference Proceedings 1728, 020139. doi.org/10.1063/1.4946190.
16. Laskowski JS, Liu Q, Bolin NJ. 1991.Polysaccharides in flotation of sulfides.Part I. Adsorption of polysaccharides onto mineral surfaces, International Journal of Mineral Processing, 33, 223-234. doi.org/10.1016/0301-7516(91)90054-M.
17. Laskowski JS, Subramanian S, Nyamekya GA. 1993.Polysaccharides-emerging non-toxic modifiers for differential flotation of sulphides, XVIII International Mineral Processing Congress, 593-600.
18. Mahmoud MA, Galal Aİ, Mohamed MAH. 2007. Improvement of Egyptian talc quality for industrial uses by flotation process and leaching, International Journal of Mineral Processing, 83, 132-145. doi.org/10.1016/j.minpro.2007.07.002.
19. Müdüroğlu M. 2020. Investigation of the effects on paint quality of Sivas talc used in water borne paints, PhD Dissertation, Graduate School of Natural and Applied Sciences, Afyon Kocatepe University, Afyon, Turkey.
20. Qin WL, Xia T, Ye Y, Zhang PP. 2018. Fabrication and electromagnetic performance of talc/NiTiO3 composite. Royal Society Open Science, 5, 171083. doi.org/10.1098/rsos.171083.
21. Pearse MJ. 2005. An overview of the use of chemical reagents in mineral processing, Minerals Engineering, 18, 139-149. doi.org/10.1016/j.mineng.2004.09.015.
22. Prasanphan S, Nuntiya A. 2006. Elektrokinetic properties of kaolins, sodium feldspar and quartz, Chiang Mai Journal of Science, 33(2), 183-190.
23. Pugh RJ, Tjus K. 1990. Flotation depressant action of poly(oxyethylene)alkyl ethers on talc, Colloids and Surfaces, 47, 179-194. doi.org/10.1016/0166-6622(90)80071-B.
24. Shortridge PG, Harris PJ, Bradshaw DJ, Koopal LK. 2000. The effect of chemical composition and molecular weight of polysaccharide depressants on the flotation of talc, International Journal of Mineral Processing, 59, 215–224. doi.org/10.1016/S0301-7516(99)00077-0.
25. Wallqvist V, Claesson PM, Swerin A, Schoelkopf J, Gane PAC. 2009. Influence of Wetting and Dispersing Agents on the Interaction between Talc and Hydrophobic Particles. Langmuir, 25, 6909–6915. doi.org/10.1021/la900192g.
26. Wei G, Bo F, Jinxiu P, Wenpu Z, Xianwen Z.2019. Depressant behavior of tragacanth gum and its role in the flotation separation of chalcopyrite from talc, Journal of Materials Research and Technology,8, 697–702. doi.org/10.1016/j.jmrt.2018.05.015.
27. Yehia A, Al-Wakeel MI., 2000. Talc separation from talc–carbonate ore to be suitable for different industrial applications, Minerals Engineering, 13(1), 111-116. doi.org/10.1016/S0892-6875(99)00154-5.
28. Yekeler M, Ulusoy U, Hiçyılmaz C. 2004. Effect of particle shape and roughness of talc mineral ground by different mills on the wettability and floatability, Powder Technology 140, 68–78. doi.org/10.1016/j.powtec.2003.12.012.
29. Yıldırım M., 2002. Yalazı-Balıkesir talk cevherinin zenginleştirilmesi, Madencilik Dergisi, 16-21.