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1

Improving spodumene flotation using a mixed cationic and anionic collector

Wang Y., Zhu G., Yu F., Lu D., Wang L., Zhao Y., Zheng H.

Physicochemical Problems of Mineral Processing

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2018

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Vol. 54, iss. 2

567--577

EN

Lithium, a rare-earth element, has been in increasing demand. Spodumene flotation is an important and challenging step for lithium extraction and production from lithium ore. In the present work, flotation tests for three pure minerals (i.e., spodumene, quartz and feldspar) and a real spodumene ore were carried out at laboratory scale. The results showed that YOA, a mixture of oleic acid and dodecylamine with the molar ration of 10:1, could be used as collector to produce a spodumene concentrate with grade of 5.59% Li2O from the feed ore with grade of 1.48% Li2O where 85.24% of Li2O was recovered to the concentrate. The measured zeta potential, contact angle and adsorption capacity indicated that YOA was preferentially adsorbed on spodumene instead of on quartz or feldspar, with the spodumene surface being more hydrophobic than that of feldspar or quartz. The adsorption energies of YOA on spodumene were calculated and the results provided insights into the superior flotation performance obtained in the present work.

2

Effect of spodumene leaching with sodium hydroxide on its flotation

Yu F., Wang Y., Zhang L.

Physicochemical Problems of Mineral Processing

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2015

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Vol. 51, iss. 2

745--754

EN

Effects of NaOH on flotation of spodumene, quartz and feldspar using oleic acid as a collector were investigated through microflotation and bench scale flotation tests. It was determined that NaOH acted more than a pH regulator in the tests. The X-ray photoelectron spectroscopy revealed that spodumene was preferentially leached by conditioning with high concentration of NaOH in the solution and exposed more Li positive sites on the mineral surface leading to an improved flotation.

3

Właściwości stopu układu: spodumen-skaleń potasowy-skaleń sodowy

Cioch A., Izak P., Stempkowska A., Thiery D.

Szkło i Ceramika

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2009

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R. 60, nr 1

29-32

PL

Przedmiotem badań było określenie wybranych właściwości fizykochemicznych stopów układu; spodumen - skaleń potasowy - skaleń sodowy, użytecznych w technologii ceramicznej. Szczególną uwagę zwrócono na temperaturę topnienia (efekt półkuli) oraz inne parametry stopu w aspekcie stopnia rozdrobnienia spodumenu. Stwierdzono, że stopień zmielenia wpływa tylko na niektóre parametry fizykochemiczne stopu. Wielkość tego wpływu uzależniona jest przede wszystkim od składu topników. Dlatego każdy przypadek stosowania spodumenu w ceramice wymaga indywidualnej analizy.

EN

In ceramic industry size-reduction is very important however still not appreciate parameter. This factor decides both, course of high-temperature reaction and other technological processes. In this paper investigations about triangle; spodumene - sodium feldspar-potassium feldspar have been shown. Special attention on melting temperature (hemisphere effect) and another parameters of melt e.g. flowability, softness, shrinkage depend on size reduction level of aluminum lithium silicate has been paid. The degree of grinding spodumene changes only some parameters of alloys. Therefore every case use of spodumene in ceramics required individually analysis.