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The bulk of amine collectors used in current feldspar operations are applied as the water-soluble acetates of the free-base amines. The Non-Hf Feldspar Flotation Method In recent years, several researchers have investigated methods for replacing HF in feldspar-quartz flotation.
The feldspar minerals and quartz were separated from each other by flotation of feldspar minerals and depression of quartz minerals. Both feldspar and quartz in amine flotation and in the absence of HF need not be floated at pH less than 4. However, in the presence of HF feldspar is floated at pH 2–3 while quartz does not float.
The potential application of different cation collectors in the flotation concentration of mica, feldspar and quartz sand has been investigated. Raw materials (Bujanovac and Ub) from two localities in Serbia were used. The results showed that for flotation of feldspars, .
Flotation Of Feldspar Review Amine hydrochloride collectors were used for the flotation of feldspars in presence of HF or a mixture of HF and NaCl. The C 10-12 amine gave the best flotation results [7] [8]. The feldspar was activated whereas the quartz was depressed by conditioning with HF.
PDF | 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 ...
Nov 01, 2006· Read "Concentration of K-feldspar from a pegmatitic feldspar ore by flotation, International Journal of Mineral Processing" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Laboratory application of flotation to the seraration of oligoclase feldspar from quartz ... Wash flotation cell free of the tails (material which does not float, mostly quartz in this study) and store or cliscard them. ... HF with pH 2.5 to the wet feldspar concentrate.
The feldspar minerals and quartz were separated from each other by flotation of feldspar minerals and depression of quartz minerals. Both feldspar and quartz in amine flotation and in the absence of HF need not be floated at pH less than 4. However, in the presence of HF feldspar is floated at pH 2–3 while quartz does not float.
Jun 25, 2019· The trading flotation separation method of quartz-feldspar is the HF acid method. consider of the environment protection, most mineral workers prefer to free-fluorine acid method. Flotation separation of potash feldspar and albite The separation of potash feldspar (orthoclase and microcline) and albite is a challenging issue because they are ...
Selective separation of Na- and K-feldspar from weathered granites by flotation in HF medium Ceramics – Silikáty 54 (1) 60-64 (2010) 61 multivalent salts, a required selectivity in flotation is achieved [1]. Sodium ions depress Na-feldspar during the flotation of alkali feldspar at natural pH and in HF
Hf Free Flotation Of Feldspar - boucherie-dujardin. Selective flotation of quartz and feldspar using non . In order to develop the HF-free flotation reagent system, the main objective of this investigation was to study the possibility of separation of quartz from feldspar .
1. Introduction. 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' zeta potentials as the zeta ...
Metallurgical ContentThe Feldspar Beneficiation & Flotation Process FlowsheetFeldspar Ore CrushingFeldspar Ore GrindingFiltering and Drying of Feldspar ConcentrateDesliming and Conditioning Beneficiation by Flotation of feldspar is well established. It is a simple matter by flotation to remove the contaminating impurities and keep the alumina (Al2O3) content at 19% even on low grade feldspar ores.
The micro-flotation tests revealed that there was little difference in the flotation of feldspar and quartz at pH 2, using H2SO4 as pH regulator. After HF pretreatment, the floatability of feldspar significantly increased while the floatability of quartz showed no change.
To overcome environmental issues when fluoride ions are used to activate the feldspar in the third flotation stage, fluoride free flotation conditions that utilise a combination of anionic and ...
11.27 Feldspar Processing 11.27.1 General1 Feldspar consists essentially of aluminum silicates combined with varying percentages of potassium, sodium, and calcium, and it is the most abundant mineral of the igneous rocks. The two types of feldspar are soda feldspar (7 percent or higher Na O) and potash feldspar (8 percent or higher K O).
It is now possible to free feldspar from all kinds of gangue minerals, e.g. mica, quartz and heavy minerals in addition to separation of both K and Na feldspars from each other [2] - [4] . Cationic flotation of feldspar (amine + HF) in presence of NaCl was conducted by CengizDemir of Turkey in 2010 to separate both Na- and K-feldspar [3] .
However, a HF-free flotation process using a mixture of the cationic and anionic collectors for the separation of feldspar from sand was described by Katayanagi [4] and the process was reported to be applied in industrial practice [2] [4]. In an aqueous medium the feldspar surface shows, after a short time, changes which have a neg-
The second method is fluorine-free flotation, which could solve the problem caused by environmental pollution of HF flotation. Applying aliphatic amines and petroleum sulfonate mixing collector in strong acidic environment using H 2 SO 4 or HCl as pH regulator, selective flotation separation of feldspar from quartz [11,12,13] could be achieved ...
It has been demonstrated that quartz could be floated in the presence of Ca 2 +, Ba 2 + and Sr 2 +, but feldspar does not respond to flotation with these reagent systems. These reagent systems open up possibility for HF-free flotation separation of quartz from feldspar.
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.
flotation machine, capacity of the flotation chamber depending on the need being 3 or 1 dm3,contents of solid parts being 300 or 100 g in 1 dm3 of the flotation pulp depending on the kind of flotation. In the flotation the following were applied: - hydrofluoric acid (HF - pH of the pulp about 2,6) which, in this case, performed three it acted as a
Review of flotation of feldspar. ... a HF-free flotation process using a mixture of the cationic and anionic collectors for the separation of feldspar from sand was described by Katayanagi [4] and ...
Quartz-feldspar separation by flotation method K. Pundareekakshudu. K. Pundareekakshudu. Search for other works by this author on: GSW. Google Scholar. ... quartz-feldspar separation; View Full GeoRef Record. POWERED BY . Citing articles via. CrossRef. Related Articles.
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