No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
Micro-flotation results indicated that 81.60% quartz was floated with both 5 × 10 −4 mol/L of CaCl 2, 2.5 × 10 −4 mol/L of NaOL and 3.0 × 10 −5 mol/L of DDA at pH 9.0, however, less than 10% of quartz was recovered without adding Ca 2+ or only using CaCl 2 and NaOL. AFM imaging revealed that Ca 2+ could adsorb on quartz in patches, which was subsequently …
Flotation technology without fluorite was studied to separate low-grade K-feldspar with quartz. It is shown in the results that qualified K-feldspar concentrate can be gained by grinding ...
The purpose of this research is to recover slime waste from feldspar flotation plant at Attanee International Co., Ltd., Tak province.Slime waste with particle size less than 230 mesh, is found ...
Semantic Scholar extracted view of "Flotation of quartz from quartz-feldspar mixtures by the HF method" by E. Larsen et al. Skip to search form Skip to ... @article{Larsen2016FlotationOQ, title={Flotation of quartz from quartz-feldspar mixtures by the HF method}, author={Erik Larsen and Rolf Arne Kleiv}, journal={Minerals Engineering}, year ...
It's highly challenging to separate feldspar from quartz by flotation owing to their similar crystal structure and physicochemical properties. Using mixed collectors has become a promising ...
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 floated from quartz. Recovery …
The effect of hydrofluoric acid (HF) pretreatment on flotation of feldspar and quartz using dodecylamine (DDA) as collector was investigated by micro-flotation, zeta potential, pyrene fluorescence ...
Conventionally, the use of HF in the feldspar-quartz separation was considered as the most efficient reagent (Larsen and Kleiv., 2016). Furthermore, feldspar floated from quartz using long-chain ... It is widely used in the flotation of iron oxide minerals and non-metallic minerals (Zhu et al., 2015). However, there are currently few reports on ...
Quartz and feldspar cannot be efficiently separated using physical methods owing to their similar physicochemical properties. In recent years, flotation has emerged as the most effective method for separating feldspar and quartz (Larsen and Kleiv, 2016, Shu et al., 2020, Xu et al., 2020).Traditional flotation methods to separate these two minerals generally include …
New HF-free process is strongly dependent on the pH range (1.7-2.5) and sulphuric acid consumption during conditioning steps. Optimal amine/alcohol weight ratio is ranged between 0.8 and 1.0. The values below 0.8 decrease strongly the flotation selectivity and the quartz recovery within the feldspar concentrates is higher than that occurs with HF.
Flotation experiments performed on a quartz-feldspar mixture demonstrate that quartz can be floated selectively from feldspars in diluted solutions of hydrofluoric acid (HF) …
A new flotation process was developed and tested at both lab and pilot scales on different feldspar ores. The Guerbert alcohols allow to perform a feldspar concentrate with very low content in quartz (2.3-3.5 %) and feldspars recovery from 78 to 81 % while the aliphatic …
The effect of hydrofluoric acid (HF) pretreatment on flotation of feldspar and quartz using dodecylamine (DDA) as collector was investigated by micro-flotation, zeta potential, pyrene fluorescence ...
In this study, feldspar ore was successfully enriched using a two-stage process. Initially, dry magnetic separation was employed to remove iron oxide, followed by cationic flotation to eliminate gangue minerals containing free silica. A feed sample with a size fraction of (− 0.25 + 0.053) mm, pre-treated by attrition scrubbing and dry high-intensity magnetic separation …
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 ...
The effect of hydrofluoric acid (HF) pretreatment on flotation of feldspar and quartz using dodecylamine (DDA) as collector was investigated by micro-flotation, zeta potential, pyrene fluorescence ...
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 ...
[Show full abstract] alkali (Na + Ca) feldspar and quartz concentrates by adapting different flotation conditions with/without hydrofluoric acid (HF). During these tests, the effect of particle ...
This basic scenario could be improved by applying froth flotation also for feldspars/quartz separation, aiming at obtaining a high content feldspars concentrate (floated) and a quartz product (non ...
The effect of hydrofluoric acid (HF) pretreatment on flotation of feldspar and quartz using dodecylamine (DDA) as collector was investigated by micro-flotation, zeta potential, pyrene fluorescence ...
The shaft and propeller are rubber covered and the tank is wood to resist the corrosive action of the acid reagents which are introduced into the circuit at this point for subsequent flotation of the mica and iron oxide …
Flotation experiments performed on a quartz-feldspar mixture demonstrate that quartz can be floated selectively from feldspars in diluted solutions of hydrofluoric acid (HF) simply by the aid of a frother. High grades and good recoveries were obtained for both quartz and feldspars. A feldspar concentrate of 99.9% at a recovery of 95.6% was produced. No further cleaning of the …
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 …
of 250 g/ton (80 g/m 3) of HF. The primary flotation was carried out in a sulfuric acid medium with an H2S Q con- sumption of 2000 g/ton. ... Iron salts, deposited on the feldspar and quartz as iron oxide or hydroxide films contaminate the natural surface. To verify this we examined the flotation of the quartz--feldspar sand from the same ...
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, ... After the flotation of mica, other iron-bearing oxide minerals were floated using sulfonate type collectors at an acidic pH range of 3–4. Following these stages ...
The best results were achieved with a combination of high-intensity wet magnetic separation and flotation. A feldspar concentrate containing 16.28% Al2O3, 10.75% K2O,2.84% Na2O,69.97% SiO2 and 0. ...
efficiency selective process of quartz beneficiation. Reverse flotation process is used to separate minerals im-purities as concentrate from valuable mineral as tailings. In our case, impurities are presented by mica, dolomite, barite, hematite, iron oxides and feldspar. In conventional flotation, the mineral particle values are
The feldspar was activated whereas the quartz was depressed by conditioning with HF. A comprehensive review on flotation of mica, iron oxides, ilmenite and other gangue minerals from feldspar was discussed by Heyes et al. in 2012[9]. However, a HF-free flotation process using a mixture of the cationic and anionic collectors for the separation
1. Introduction. Quartz is an important industrial mineral with various applications, and its flotation with anionic collectors when activated with cations, or with cationic collectors, have been well-known for quite some time (Glover, 1928, Wark, 1936).More recently it have been shown that quartz can be easily floated, without the use of collectors, in a solution of HF and …
Although the use of HF in the feldspar-quartz separation with the amine-type cationic collectors was considered as the most suitable reagent scheme, the use of HF is not acceptable now due to the inherent cost, environmental pollution, and health hazards. The search for new reagent schemes without HF has ...
