To address the problem of the flotation separation of sulfides from serpentine and other Mg bearing silicate minerals polysaccharide depressants such as carboxymethyl cellulose CMC N carboxymethyl chitosan N CMC guar gum have been used to disperse slime particles of serpentine from sulfide surfaces [6 [12] [13] [14]] However the poor solubility of
In this study the role of nanobubbles in the flotation behavior of hydrophilic serpentine was examined Nanobubbles EN and number of bubbles produced at 1 min and 2 min of sonication were significantly better than those of the prolonged test group
According to the reports above it is inferred that the interaction between sulfide and serpentine particles may be eliminated by controlling their surface charge Alvarez Silva et al 2016 Feng et al 2013 To restore the flotation performance of the coated sulfide minerals chemical additives such as sodium silicate sodium hexametaphosphate carboxymethyl
Firstly the serpentine group minerals generally described by the formula Mg Fe 3Si2O5 OH 4 Before starting the laboratory flotation test process water pH was adjusted to by lime addition All tests were carried out at a temperature of 20 °C Prior to flotation the test feed batch was ground in a laboratory mill at 70% solids for
The flotation results showed that the pyrite flotation recovery in the serpentine/pyrite flotation system recovered from % to % after the addition of 50 mg/L EDTMPA; zeta potential test adsorption test scanning electron microscope characterization SEM results showed that 50 mg/L EDTMPA made the surface kinetic potential of
serpentine by flotation with particular attention to the change in the agglomeration states of brucite and serpentine after dif ferent conditioning times In the typical artificially mixed mineral flotation test we prepared the mineral pulp by adding 2 g of a mineral sample g brucite and g serpentine into a 50 mL breaker with
The separation of pentlandite from serpentine is typically achieved by froth flotation while reducing the content of MgO in nickel concentrates is a worldwide challenge in the mineral processing Lu et al 2019b Serpentine is easily floated into the nickel concentrates through attachment to the valuable minerals pentlandite and air bubbles for the formation
For foam entrainment fine grained serpentine is the primary inducement which tends to be entrained into the flotation concentrates with foam especially in the flotation system with strong foaming properties [5] Conventionally dithiophosphates serve as the widely used collector for nickel sulfide ore flotation [6] [7] [8]
The flotation test results revealed that the existence of SMP can selectively activate the flotation of calcite and realize the reverse flotation separation of brucite and calcite New insights into the flotation responses of brucite and serpentine for different conditioning times surface dissolution behavior Int J Miner Metall Mater
amine collectorfor the removal of serpentine;this isfollowed by the flotation of chromite at pH 3 with the same amine collector In a typical procedure 270 gltof amine is fed into the flotation medium in the serpentine flotation step while 270gltof amine isadded in the chromiteflotation step From an ore assaying 36% CrZ03 a flotation
A typical flotation test included the following steps 1 weigh g ascharite or serpentine in single mineral experiments; weigh a mixture of serpentine and ascharite at different mixing ratios 1 1 1 1 1 1 mass ratio of serpentine to ascharite in mixed minerals experiments and keep the mass of ascharite constant g
Micro flotation test results showed that GM depressed serpentine more stronger than that of the chalcopyrite at a wide pH range of 3 8 To limit the detrimental effect of serpentine on
Flotation Test of a High Silica Copper Oxide Ore in Yunnan Yang Zhao1 a 1 c 1 Faculty of Land Resource Engineering Kunming University of Science and Technology calcite and serpentine and so on Results of the multi element chemical analysis of run of mine are shown in Table oxidation rate of sample reaches up to % including 7
The physico chemical interactions among minerals such as olivine chromite and serpentine; the most commonly present ions in solution such as Ca and Mg; and flotation reagents such as EDTA and oleic acid were investigated The study was conducted via release tests electro phoretic measurements and microflotation of selected minerals coming from the
Serpentine a magnesium silicate mineral with positive surface charge in many sulfide ores around the world usually deteriorates the flotation behavior by covering the target mineral surface
Abstract Because serpentine is easy to form heterogeneous agglomeration with pentlandite thus affecting its flotation separation the addition of albite was proposed to improve the flotation separation effect of pentlandite and serpentine The influence mechanism of albite was studied The results of flotation show that the flotation recovery of pentlandite increases from 44% to
The results of the micro flotation method showed how well HEDP was selectively inhibited in the pyrite serpentine flotation separation process On the basis of a number of measures including ICP OES tests Zeta potential testing Scanning electron microscopy SEM characterization and X ray photoelectron spectroscopy XPS analysis it was
Serpentine often associates with many metal sulfide ore deposits In sulfide minerals flotation many studies demonstrated that serpentine slime coatings can occur on the valuable mineral surfaces through the electrostatic attraction reduce the hydrophobicity of the sulfide particle and then depress mineral flotation Basile et al 2010 Pietrobon et al 1997
The chalcopyrite used in this study undergoes ultrasonic cleaning before each test Download Download high res image 143KB Download Download full size image; PESA and HPMA can effectively eliminate the negative impact of serpentine on the flotation of chalcopyrite It is worthy of pointing out that as a dispersant HPMA exhibits the
1 Introduction Serpentine is a typical alteration product of pyroxenes or olivines during hydrothermal metamorphosis [1] which seriously interferes with the concentration of pentlandite in the froth flotation of copper nickel sulfide mechanisms by which serpentine affects the flotation behavior of pentlandite include entrainment [2] physical entrapment [3] and
