The flotation response as a function of pH and collector concentration was investigated. The single mineral flotation tests in the presence of anionic collectors, quartz does not respond to flotation but the C12 amine flotation of quartz was observed to be pH and concentration dependent. It was observed that hematite flotation recovery is ...
Muscovite crystal has anisotropy, the flotation performance is determined by the adsorption of collectors on its specific crystal plane. This study focused on the adsorption mechanism of sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (SDBS) used as muscovite collectors on its (0 0 2) crystal plane.The flotation …
The selectivity window between quartz and hematite flotation using amide-amine was higher at pH 10.5 (approximately 80% for 5 mg/L). Therefore, the use of starch is not necessary in siliceous itabirite flotation by amide–amine collector. Zeta potential measurements and infrared spectra reveal that the adsorption of amide-amine collector …
the flotation of hematite. Cationic reverse flotation was initially developed by the. ... flotation collector is an unneutralized primary ether amine, and corn starch is again added as a depressant.
DOI: 10.1016/J.MINPRO.2016.11.012 Corpus ID: 99083826; A study of flotation characteristics of monazite, hematite, and quartz using anionic collectors @article{AbakaWood2017ASO, title={A study of flotation characteristics of monazite, hematite, and quartz using anionic collectors}, author={George Blankson Abaka-Wood …
A number of surfactants containing saturated 12-carbon chain groups were used as collectors over a wide range in pH. The flotation of this hematite with dodecanoic acid (lauric acid) showed a maximum recovery in the pH range 6–8.5, a sudden drop at pH 9, and a steady increase in recovery as the pH was raised from 9–12.
Research Progress of Flotation Collector in Hematite Flotation. September 2013. DOI: Authors: Wei Zhi Wang. Meng Qing Lei. Chun Guang Yang. Request full-text. …
Flotation recovery of monazite, hematite, and quartz as a function of pH using oleic acid (1000 g/t) as collector. It can be seen that, the flotation recovery of both monazite and hematite decreased gradually for pH values lower than their respective IEPs, which is consistent with that reported in the literature ( Cheng et al., 1993, Joseph ...
Three-phase froth stability in hematite flotation using DDA as a collector | Request PDF. Article. Three-phase froth stability in hematite flotation using DDA as a …
The implementation of a high-performance collector represents a promising strategy for enhancing mineral recovery. In this study, the flotation performance of hydroxamic acid was firstly investigated by examining the flotation behavior of pyrochlore, calcite, feldspar, and quartz using aromatic hydroxamates (AHA), namely methyl …
An increase in collector concentration leads to the increased quartz recovery due to the increased quantity of the collector deduced from the higher peak intensity (Fig. 16), while the flotation of hematite does not occur or is very low (Fig. 15 a). However, the flotation behaviour of kaolinite is similar to those of hematite while the …
The flotation performances of muscovite and quartz had been studied using DDA, NaOL and mixed NaOL/DDA with various molar ratios. Fig. 1 shows flotation recoveries of muscovite and quartz as a function of pH in the presence of different collectors. It can be seen that with an increase of pH from 2 to 11, the recovery of …
The effect of collector sodium oleate concentration on the flotation separation of quartz and hematite is shown in Fig. 1. The flotation recovery of hematite submerged in the flotation cell (concentrate) remained above 96% with sodium oleate concentration ranged from 2.5 to 70 mg/L, indicating that HM had a better depression …
Flotation is one of the most common methods used to recover iron ore, which includes reverse flotation of gangue with cationic collector [6][7][8] and direct flotation of iron ore with anionic ...
these findings. Thus it has been shown that the hematite flotation using ole-ate as collector is highly sensitive to pH [10] and that the best flotation re-coveries are obtained in the pH range of 6-8 [1,3-8,10-12]. Also, increase in the conditioning temperature has been reported to significantly improve the hematite flotation response [5].
The effect of dolomite with different particle size fractions on hematite flotation was studied using sodium oleate as collector at pH of about 9. The effect mechanism of dolomite on hematite flotation was investigated by means of solution chemistry, ultraviolet spectrophotometry (UV), inductively coupled plasma atomic …
The flotation test results show that when the molar ratios of the mixed collector D-DDAB and MO-DDAB are 9:1 and the flotation time is 4 min, the cumulative combustible recovery of low-rank coal ...
In the reverse cationic flotation process of hematite and quartz, the most commonly used cationic collectors are amine collectors, such as dodecylamine (DDA) and ether amine, etc [7], [14]. In this process, the quartz needs to be floated out and the target mineral hematite is suppressed.
However, starch could depress the flotation of hematite. Flotation recovery of 98.10% for quartz could be achieved, when N23 concentration was 43.33 mg/L and starch concentration was 16.67 mg/L at ...
It was worth mentioning that with the collector DEOSA, the significant recovery differences of two minerals were observed in a wide pH range of 2.48–9.04, indicating that DEOSA had high flotation selectivity for quartz against hematite. Although the flotation difference between hematite and quartz at pH 9.04 was slightly greater …
Flotation recovery of rare earth oxides from hematite–quartz mixture using sodium oleate as a collector G. Abaka-Wood S. Fosu J. Addai-Mensah W. Skinner Materials Science, Chemistry
The most studied hydroxamate for mineral flotation is octyl hydroxamate (C8). A common maximum in adsorption and flotation of many oxide minerals using …
Flotation recoveries of quartz and hematite as a function of pH value with DMPDA as the collector (15.0 mg/L). The effects of DMPDA concentration on the recoveries of quartz and hematite were investigated under the natural pH value of the slurry (pH Quartz = 7.23, pH Hematite = 7.42).
The reduced solubility of the longer fatty acid carbon chains made these reagents ineffective and inefficient as flotation agents. At higher collector dosages, high hematite recoveries are ...
Oleic acid and oleate are widely used in the flotation separation of iron minerals. Shibata and Fuerstenau [16] indicated that sodium oleate can work as both collector and flocculant in flotation of fine hematite. Electrostatics interaction and hydrophobic interaction reinforced oleate adsorption on hematite surface.
The flotation response of hematite as a function of pH at fixed cationic and anionic collector concentration is shown in Fig. 1.Results clearly indicate that with cationic C 12 amine collector the flotation recovery increases with the increase of pH till around pH 9.5 and thereafter, the recovery decreases marginally. A maximum recovery, with C 12 …
In hematite or quartz flotation using DDA as a collector, the active ion C 12 H 28 N + would be enriched on the surface of hematite and quartz, forming a layer of …
Hallimond flotation response of hematite as a function of pH and collector concentration was investigated. The study revealed that hematite flotation recovery is maximum at acidic pH with sulphate, at neutral pH 6–7 with oleate, and at basic pH about 9.5 with C 12 amine. It is the first time that the hematite flotation results show an ...
developing flotation collectors for magnetite and hematite ores through close collaboration with our customers. By studying which froth characteristics complement traditional float ... silica flotation collector to improve the reverse flotation of calcite to better suit their changing ore type and needs.
DOI: 10.1016/j.mineng.2023.108023 Corpus ID: 257360889; Three-phase froth stability in hematite flotation using DDA as a collector @article{Li2023ThreephaseFS, title={Three-phase froth stability in hematite flotation using DDA as a collector}, author={Rongjiao Li and Xi-mei Luo and Shuming Wen and C. Li and Dayong Wei and Wen Yang and Ying …
Single mineral flotation results demonstrated that monazite and hematite could be floated by the selected collectors; however, low or no quartz flotation was observed in some cases. Results from electrokinetic and contact angle measurements are consistent with that of the floatability of monazite, hematite, and quartz.
The froth half-life was remarkably higher in the presence of quartz particles compared with hematite particles, forming stickier froth, especially for quartz particle sizes below −18 μm. Fine quartz was found to be a key factor in improving the froth stability in hematite flotation using DDA as a collector.
Adsorption mechanism of mixed collector systems on hematite flotation | Semantic Scholar. DOI: 10.1016/J.MINENG.2011.11.005. Corpus ID: 94892178. Adsorption …
Adsorption Mechanism of Mixed Cationic/Anionic Collectors in Quartz–Hematite Flotation System. The adsorption mechanism of mixed cationic C12 amine and anionic sulfate / oleate reagent schemes was examined through Hallimond flotation studies using pure quartz and hematite minerals. The….
The development of eco-friendly collectors is an essential issue of much concern in mineral flotation processes. In this work, an eco-friendly amine oxide, N,N-Dimethyl aminopropyl dodecylamide ...
The effect of hematite and quartz with different particle sizes on the three-phase froth stability using dodecylamine (DDA) as a collector was investigated, and the mechanism of how quartz improves froth stability was explored. Microflotation experiment, three-phase froth stability experiment, froth morphology photography, pulp viscosity measurement, …
Oleic acid and oleate are widely used in the flotation separation of iron minerals. Shibata and Fuerstenau [16] indicated that sodium oleate can work as both collector and flocculant in flotation of fine hematite. Electrostatics interaction and hydrophobic interaction reinforced oleate adsorption on hematite surface.
The study revealed that hematite flotation recovery is maximum at acidic pH with sulphate, at neutral pH 6–7 with oleate, and at basic pH about 9.5 with C 12 amine. …
The results of wettability were consistent with the micro-flotation outcomes, which demonstrated that increasing collector concentration improved the floatability of both quartz and hematite ...