Conclusion. In this study, a methodology for separating quartz was developed and tested on sediment and rock samples from the Himalaya. Method was able to extract pure quartz (95-96%) from the sediment and rock samples. SEM image analysis shows that proposed method was able to bring down feldspar content to ~ 4-5%.
The ZPC of quartz and feldspar (microcline) are at pH 2.0 and 1.0 respectively. These values are quite consistent with the other reported values [1]. Figure 1 illustrates the flotation of quartz and microcline as a function of pH when using sodium dodecylsulfonate (SDSO) as collector in the presence of Ca2+, Ba2+, Sr2+ and Mg2+.
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.
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 ...
Selective Flotation of Quartz and Feldspar Using Non-Ionic Surfactant T Wakamatsu1 and M S El Salmawy2 ABSTRACT EXPERIMENTAL In order to develop the HF-free flotation reagent system, the main objective of this investigation was to study the possibility of separation of Materials quartz from feldspar using non-ionic surfactants as the collector.
Pure mineral flotation experiments have demonstrated that quartz can be floated without a collector, in solutions containing an inorganic acid (e.g. H2SO4) and sodium fluoride (NaF). Excellent ...
Pure mineral flotation experiments have demonstrated that quartz can be floated without a collector, in solutions containing an inorganic acid (e.g. H2SO4) and sodium fluoride …
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 impurities. Conditioning is normally carried out at 65-70% solids. Feldspar Flotation
Feldspar concentrate obtained in closed-circuit had a content of K2O and Na2O 12.12%, quartz concentrate with a yield of 19.94% containing 97.12% SiO2 was obtained in the same time. Discover the ...
A novel green cationic surfactant Poly (propylene glycol) bis (2-aminopropyl ether) (PEA) with multiple amine groups was utilized as a collector for flotation separation of quartz from feldspar-quartz associated ore (FQA) without acid (particularly, HF) and alkali. The collecting performances and the adsorption mechanisms of PEA on the …
The results of batch flotation, ICP-OES and XRD analyses show that the first flotation product is almost quartz, while more feldspar and little quartz exist in the sink product when compared with ...
The flotation responses of quartz and feldspar with alkylsulfonates' collectors in the presence of some alkaline earth metals were studied. The activation mechanism in these systems is discussed in terms of hemimicellization and surface precipitation of neutral component of cation-sulfonate complex, e.g. Ca(OH)RSO 3.. …
Anionic flotation of the iron oxide impurity from the −0.25 + 0.03 mm ground product was successfully conducted using locally produced dodecyl benzene sulphonic acid—rice bran oil/kerosene ...
The above analysis indicates that the flotation separation of feldspar and quartz may be enhanced if only fluorine-related ions are introduced into the separation …
The study was done with the focus on developing alternative routes that will allow the concentration of iron ore by flotation without a depressant reagent. 2. Materials and methods2.1. Minerals and reagents. Pure quartz, kaolinite, and hematite mineral samples were used in this study.
A HF free flotation process using a mixture of cationic and anionic collectors for the separation of feldspar from quartz was described by Katayanagi [8] and this process was reported to be applied in industrial practice [9]. The mixed collectors were composed of cationic alkyltrimethylene diamine and anionic petroleum sulfonate.
1. In the case of the flotation of iron oxide from glass quartz sand by an anionic collector in the presence of soda and liquid glass the mass content of Fe 2 O 3 in the sand decreases from 0.34 to 0.053%. 2. A flotation method distinguished by the fact that a mixture of air with hot (> 100°C) water vapor is used as the gas phase was …
Large portion of the K-feldspar in the raw materials could not be removed during processing in this study, though hot acid leaching with 1 mL HF designed did have an ability to attack and ...
Potassium feldspar and quartz are all silicate minerals with frame structure,and have the similar crystal structure and physicochemical properties. Therefore, flotation has become the main method to separate potassium feldspar from quartz. The separation of potassium feldspar from quartz with anion and cation mixed collector was studied in …
Pure mineral flotation experiments have demonstrated that quartz can be floated without a collector, in solutions containing an inorganic acid (e.g. H 2 SO 4) and …
The attendance of colouring constituents, mainly iron oxide in feldspar ore, led to losses in its quality because of making a black spot in the product build through the firing procedure as well ...
Flotation experiments performed on a quartz-feldspar mixture demonstrate that quartz can be floated selectively from feldspars in diluted solutions of hydrofluoric …
The main flotation methods for the separation of quartz and feldspar, such as hydrofluoric acid method, fluoride-free acid method and fluoride-free acid method, are reviewed in detail. It is pointed out that fluoride-free acid method and pretreatment enhanced flotation will be the key direction of technological development in the future.
Feldspar and quartz are similar in composition and structure, and hence, they exhibit low flotation separation efficiency in acid or alkaline conditions and while using the traditional reagents scheme. In this study, hydroxypropyl starch (HPS) was introduced as a novel depressant in the flotation separation of quartz from feldspar.
Traditionally, HF has performed two functions in the production of high purity quartz concentrates: Firstly, it has been used to activate feldspar prior to its flotation by amine collectors – thus enabling the separation of feldspar and quartz at low pH where the zeta-potentials of the former remains negative while that of the latter becomes ...
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, …
In the non-collector flotation method, diluted HF solution is used and frothers added where the quartz floats from the feldspar.However, in this case, the quartz recovery depends on the frother ...
The results of batch flotation, ICP-OES and XRD analyses show that the first flotation product is almost quartz, while more feldspar and little quartz exist in the sink product when compared with ...
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 …
Abstract. Froth flotation of iron oxides and quartz is reviewed over the broad range of particle sizes. The review, which embraces laboratory-, pilot plant- and industrial operations, encompasses (i) surface chemistry of iron oxides and quartz flotation (ii) relevant collectors and their adsorption mechanism and (iii) …
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, desliming, flotation and high intensity Magnetic Separation process. Feldspar concentrate obtained in closed-circuit had a content of K2O and Na2O 12.12%, quartz …
Abstract. 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 …
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 ...