The flotation response of a single mineral chrysocolla-quartz sand sample and mixed chrysocol-la-malachite-quartz sand sample using n-octanohydroxamate collector has been investigated. Recoveries of 95% were achieved in bench-scale flotation testing, with the best Cu grades achieved at pH > 9.
The effect of calcite on malachite sulfidization flotation was investigated by micro-flotation tests, adsorption, sedimentation and zeta potential test. The micro …
In this study, ammonium ion was used to enhance the sulfidation flotation of malachite. The effect of ammonium ion on the sulfidation flotation of malachite was investigated …
The flotation experiments were performed in an in-house built Hallimond tube (dimensions shown in Figure S8) with a total volume of 150 mL. For conditioning, malachite (1 g) was dispersed in a background solution (10 mM NaCl, pH 3) for 2 min before ChNCs were added and stirred for 2 min.
In this section, the influences of the CMDTP dosage and the pulp pH on the flotation performances of malachite and calcite were investigated by micro-flotation …
As shown in Figure1b, sulfidized malachite has a higher flotation rate in the presence of ammonium. These results indicated the positive e ects of ammonium on the sulfidization flotation of malachite.
Microscope, applicator stick, glass slide, cover slip, normal saline, 33% zinc sulphate, test tube, centrifuge, cotton wool and gauze. Procedure Mix about a half teaspoon of stool (about 0.5g) with 1 to 2ml of normal saline in a test tube Pass the faecal suspension through a strainer into a test tube to remove the large particles
The results of the combined flotation and metallurgical processes test indicated that a qualified concentrate with a 29.37% copper grade can be obtained via the flotation process with a recovery rate of 32.22%. The flotation tailings were sorted by high-gradient magnetic separation.
This test was performed using the XFG–II flotation machine at an available cell of 40 mL and the rotation speed of 1600 r/min was used in the malachite flotation test. Before the experiment, a malachite sample (2 g) was placed in a flotation tank, and 35 mL of ultrapure water was added for slurry mixing.
Micro-flotation experiments were performed in a modified Hallimond tube with a capacity of 50 mL. In each flotation test, 3 g of the fine malachite sample became conditioned for 3 min in a regarded quantity of deionized water in a 50 mL beaker, and the impeller velocity was held at a steady l750 rpm.
The foregoing case studies, and flotation testing on other ores (not discussed here), have provided sufficient evidence for the following important observations: a) Well defined oxide copper minerals such as malachite, cuprite, tenorite, etc., if present in the ore, are floated by alkyl hydroxamates.
Micro-flotation test results show that the flotation recovery of malachite can be greatly improved by this synergistic activation system, compared with that upon treatment in a direct sulfidization system. Zeta potential, XPS and ToF-SIMS analysis showed that the content of highly active cuprous sulfide species and copper sites on the malachite ...
The flotation performance of HPDO to malachite was studied by micro and batch flotation tests. And the adsorption mechanism of HPDO on malachite was discussed by XPS analysis. Go to: Experimental Materials The XRD of malachite, quartz, and calcite were shown in Figure 1.
To identify the flotation behavior of TN-deposited malachite, a Hallimond tube was used to perform the flotation tests. For all tests, the following identical …
The flotation performance of malachite with or without Fe 3+ The sulfidization flotation of samples after added Fe 3+ was investigated with micro-flotation tests. The results of malachite by sulfidization flotation with different Fe …
Marion et al. (2017) studied the effect of five alkyl and two aromatic hydroxamates on the flotation of a synthetic mixture of malachite and quartz. Around …
The results indicated that under the conditions of muscovite mass of 10.00 g, pulp mass concentration of 13.33%, flotation speed of 1750 r/min, sodium oleate concentration of 9.20 × 10 −4 mol/L and Cu 2+ concentration of 6 × 10 −5 mol/L, electrochemical pretreatment of Cu 2+ could strengthen the activation of muscovite.
Fig. 2 shows the flotation test results of sulfidized malachite with and without the addition of Fe 3+, and found that the Fe 3+ depressed the enrichment of sulfidized malachite when the dosage of the NaXB was 2 × 10 −3 mol/L, the recovery decreased from 68.54% to 15.20%.
The effect of ammonium ion on the sulfidation flotation of malachite was investigated using microflotation test, inductively coupled plasma (ICP) analysis, zeta potential measurements, and...
Sulfuration flotation is the most widely used technology in malachite beneficiation. However, the inhomogeneity of malachite surfaces usually results in a non-uniform sulfuration surface. The motivation of this work is attempt to adopt different functional combination collectors to enhance the sulfuration flotation of malachite. …
of ammonium ion on the sulfidation flotation of malachite was investigated using microflotation test, inductively coupled plasma (ICP) analysis, zeta potential …
the sulphidiser and malachite is optimum at a potential of –500 mV (Jones & Woodcock, 1978). However, xanthate flotation is depressed at this potential. Oxidation of sulphide ions in excess is then necessary to reach the optimal potential of –300 mV (Ferron & Manu, 1994). This leads to the
The flotation performance of HPDO to malachite was studied by micro and batch flotation tests. And the adsorption mechanism of HPDO on malachite was discussed by XPS analysis. Experimental Materials The XRD of malachite, quartz, and calcite were shown in Figure 1.
As shown in Figure1b, sulfidized malachite has a higher flotation rate in the presence of ammonium. These results indicated the positive e ects of ammonium on the …
They confirmed that ammonium ion can promote the sulfidation flotation of malachite based on flotation experiments. However, no other test method can verify this result. The mechanism of ammonium ions on sulfide flotation of malachite was studied.
The effect of ammonium ion on the sulfidation flotation of malachite was investigated using microflotation test, inductively coupled …
The sulfidization flotation of samples after added Fe 3+ was investigated with micro-flotation tests. The results of malachite by sulfidization flotation with different Fe 3+ concentrations were carried out. During the test (Fig. 2), the concentration of the sulfidizing agent and collector was 1 × 10 −3 mol/L, and the dosage of Fe 3+ was
This show that various test for the physico-chemical properties were used to elucidate the effect of ammonium sulfide on the flotation of malachite. The direction to …
This method is currently the diagnostic test of choice for enteric parasites in small animals (e.g. dogs, cats) and commonly utilized with a commercial reusable stand-up fecal flotation device known as the Fecalyzer (EVSCO 014008-50, USA).
Therefore, this paper was focused on the effect of ammonium sulfide and sodium sulfide on the sulfidization of malachite, respectively; this was investigated using different devices such as the micro-flotation tests, Zeta potential measurements, ToF–SIMS, XPS analysis, and FTIR.
Sulfidization flotation is the main method for recovering non-ferrous metals oxide minerals, and the sulfidization effect determines the flotation recovery of minerals.In this paper, the effect of Pb(II) on the flotation of malachite sulfidized with sodium sulfide was studied through microflotation experiments, zeta-potential determination, adsorption …
In the flotation of malachite even at low concentrations of sodium sulfide, the depression of malachite was observed without an effective oxidation. The oxidizing reaction takes place on the surface of …
Micro-flotation test demonstrates that the recovery of malachite from 73% increased to 83%, when the (NH4)2SO4 was added. Contact angle and zeta potential test results indicate that addition of Na2S·9H2O changes the surface properties of malachite and provide the conditions for adsorption of butyl xanthate (BX).
A novel collector of 1-(2-hydroxyphenyl) dec-2-en-1-one oxime (HPDO) was synthesized from 2-hydroxy acetophenone and octanal, and its flotation and adsorption behavior for malachite were studied by flotation tests and x-ray photoelectron spectroscopy (XPS) analysis. The flotation results of a single mineral show HPDO is a …