Quartz-feldspar separation for the glass and ceramics …
In this study, a potassium feldspar are containing mainly quartz and coloring impurities was subjected to beneficiation tests involving magnetic separation and flotation, which were …
اقرأ أكثر
Improved separation of quartz optically stimulated …
The main difference between the stimulation routes presented in Fig. 1 is that the OSL signal from quartz is a result of electrons stimulated into the conduction band (Bailey, 2001; Adamiec et al., 2008), whereas electrons giving rise to the corresponding signals from feldspar have additional potential pathways, including tunnelling from the …
اقرأ أكثر
Separation of Feldspar and Quartz in Tailings of a Certain …
The separation of feldspar and quartz in the tailings of a certain tantalum-niobium mine in Jiangxi province were studied.Results of trial tests show that feldspar and quartz can be separated in the presence of sulfuric acid,no matter with or without hydrofluoric acid.Results of total-process tests show that,with a "non-HF" flowsheet,feldspar and quartz can be …
اقرأ أكثر
Developing Effective Separation of Feldspar and …
It was suggested that the HF method can achieve a good separation of feldspar and quartz with a high grade of feldspar and a high-quality quartz . However, there is a large amount of chemical …
اقرأ أكثر
Separation of lepidolite from hard-rock pegmatite ore via …
Finally, quartz was the primary mineral in the flotation tailings; however, there was also a high feldspar content. In conclusion, mica flotation occurred, as expected. Nevertheless, the separation of feldspar and quartz must be improved. The results indicate that it is possible to separate micas from lepidolite flotation tailings and then, in ...
اقرأ أكثر
Electrostatic K-Feldspar/Na-Feldspar and Feldspar/Quartz Separation
Na-feldspar, K-feldspar/quartz, and Na-feldspar/quartz showed that it is possible to achieve satisfactory results in the separation of these species, by triboelectrical charging of the material ...
اقرأ أكثر
Quartz-feldspar separation for the glass and ceramics …
In this study, a potassium feldspar ore containing mainly quartz and coloring impurities was subjected to beneficiation tests involving magnetic-separation and …
اقرأ أكثر
Feldspar flotation as a quartz-purification method in …
Using fluvial sediment samples from Central Asia, which contain 16–50 weight percent (wt.%) of feldspar, we show that the standard physical separation and chemical …
اقرأ أكثر
Separation of feldspar from quartz using EDTA as modifier
EMDEE and simulated batch cell flotation tests show that quartz-feldspar separation with EDTA occurs at pH values around 2. However, as the action mechanism …
اقرأ أكثر
THE ROLE OF ALKALINE EARTH CATIONS IN FLOTATION SEPARATION OF QUARTZ …
The separation of feldspar from quartz is difficult because they reveal similar surface properties. Feldspar can be separated from quartz-feldspar mixture by froth flotation. A variety of conditions have been employed, but the best selectivity is reported for acidic solutions with amines as collector and hydrofluoric acid as a modifier [1,2 ...
اقرأ أكثر
Flotation of quartz from quartz-feldspar mixtures by the HF …
Froth flotation is the selected method for the separation of quartz and feldspar. In the conventional process, feldspar is floated from quartz by using hydrofluoric acid (HF) as activator for the feldspar and a cationic collector (amine) at pH 2–3 (O'Meara, 1939). (1979) reported that HF creates a large difference in the minerals ...
اقرأ أكثر
The ESR Signals in Different Minerals and the Bleaching of Feldspar …
For the separation of quartz and feldspar, the specific gravity of the heavy liquid was 2.65. When the heavy mineral was separated, the specific gravity of the heavy liquid was 2.75. The separated heavy minerals, feldspar and quartz, were put into a 250 mL glass beaker and rinsed with distilled water three to four times to remove any …
اقرأ أكثر
A Comparative Study of Quartz and Potassium Feldspar …
An improved method for producing high-purity quartz (Qtz) and potassium feldspar (Kfs) concentrates was developed using various chemical reagents. Froth flotation experiments on a Qtz–Kfs mixture showed that quartz could be selectively floated from Kfs in diluted hydrofluoric acid (HF) using a frother. Similarly, feldspar could be selectively …
اقرأ أكثر
The role of alkaline earth cations in flotation separation of quartz
The separation of feldspar from quartz is difficult because they reveal similar surface properties. Feldspar can be separated from quartz-feldspar mixture by froth flotation. A variety of conditions have been employed, but the best selectivity is reported for acidic solutions with amines as collector and hydrofluoric acid as a modifier [1,2 ...
اقرأ أكثر
Selective flotation separation of spodumene from feldspar …
Thus, methods for the successful separation of lithium-bearing mineral phases from gangue minerals (such as quartz and feldspar) are urgently required. ... Considering the cost of flotation, the optimum separation of spodumene and feldspar was determined to be a SA concentration of 30 mg/L, which yielded a feldspar recovery of less than 16% …
اقرأ أكثر
Flotation separation of feldspar from quartz using sodium …
The physical and chemical properties of feldspar and quartz are highly similar, thus they cannot be easily separated effectively. In this work, the flotation …
اقرأ أكثر
Flotation of quartz from quartz-feldspar mixtures by the HF …
Froth flotation is the selected method for the separation of quartz and feldspar. In the conventional process, feldspar is floated from quartz by using …
اقرأ أكثر
New insights into the oleate flotation response of feldspar …
Although feldspar is generally considered as a gangue mineral that must be separated from quartz or spodumene [3], [4], [5], it may also represent a valuable raw material for the glass, ceramic, and paper industries [6], [7]. Understanding the separation process of feldspar minerals is thus of significant importance for both the above purposes.
اقرأ أكثر
A Comparative Study of Quartz and Potassium Feldspar …
1. Introduction. Quartz and potassium feldspar usually occur associated in nature. They have large industrial applications, which depend on their purity. Quartz is …
اقرأ أكثر
Proposed process for effective separation of quartz and feldspar …
Protocols have been developed to extract pure quartz from the sediment, e.g., the separation of quartz from feldspar and other heavy minerals can be achieved by applying 2-step density separation.
اقرأ أكثر
Quartz-feldspar separation for the glass and ceramics …
A study was conducted to test a new technique for separating quartz from feldspar using EDTA as modifier in acid medium.The aim is to replace the modifier now in use, namely HF, because of the ...
اقرأ أكثر
Hydrothermal synthesis of 13X zeolite by using feldspars
Thus, the best separation time is 5 min when the relation between quartz and feldspars in filtrate is in optimum condition. As mentioned by Lazaro et al., pure quartz sand mixed with sodium carbonate must be calcinated at the high temperature of 1300–1600 °C to be dissolved. In this research, quartz phase was separated from raw material ...
اقرأ أكثر
Lecture 3 feldspar group and its application | PPT
Figure Feldspar particle vs. recovery graph [39, IMA, 2002] In Section II, either optical, flotation or electrostatic separation can be used to separate feldspar from quartz, depending on both the intrinsic characteristics of the …
اقرأ أكثر
Application of pulsed OSL to the separation of the …
Figs. 2 and 3 show the results of a direct comparison between CW–OSL and pulsed stimulation, for both quartz and feldspar, respectively (the insets show a comparison of the absolute intensities, the main figure a comparison of the OSL decay shapes). For the pulsed measurements 50 μ s on, and 200 μ s, off blue LED pulses were used; in this …
اقرأ أكثر
Separation of feldspar from quartz: Mechanism of mixed
Using pure albite and quartz minerals, the separation of albite from quartz using mixed cationic/anionic reagent schemes is assessed through Hallimond flotation, zeta potential and diffuse reflectance FTIR studies. The reagent schemes are tested in bench-scale flotation for the separation of albite from Greek Stefania feldspar ore. The single …
اقرأ أكثر
Maximizing resource use—modified starch aids in selective separation …
"The research findings are expected to provide a new strategy for efficient flotation separation of quartz from feldspar and the comprehensive utilization of tailings," the researchers conclude. The paper, published in Minerals Engineering, is " Selective flotation of quartz from feldspar using hydroxypropyl starch as depressant " (DOI ...
اقرأ أكثر
(PDF) Optimising the separation of quartz and feldspar …
From these data, the best quartz-feldspar signal separation seems to be 30 obtained from an on-time between 10 and 50 ms; we obtain a >40 times increase in signal separation when using an on-time between 10 and 50 ms compared to using CW stimulation.
اقرأ أكثر
Quartz-feldspar separation for the glass and ceramics …
Large reserves of feldspar ore exist in the Aegean region of Turkey. The main colored impurities in these ores are iron- and titanium-bearing minerals such as anatase, rutile, sphene and ilmenite. In this study, a potassium feldspar ore containing mainly quartz and coloring impurities was subjected to beneficiation tests involving …
اقرأ أكثر
(PDF) Developing Effective Separation of Feldspar and Quartz …
achieve a good separation of feldspar and quartz with a high grade of feldspar and a high-quality. quartz [10]. However, there is a lar ge amount of chemical activator (HF or NaF) in the flotation.
اقرأ أكثر
Separation of Feldspar from Quartz: Mechanism of Mixed …
For that reason, research has leaned toward new schemes without the usage of HF for feldspar/quartz separation [10,[13][14][15]. Besides other types of collectors such as anionic, cationic or non ...
اقرأ أكثر