The flotation separation of smithsonite from calcite and quartz using a alkyl diamine ether (GE-609) as the collector was investigated through micro-flotation experiments and the real ore ...Web

As a systematic approach, this study explored the flotation efficiency and interaction mechanisms of two biodegradable ether amines (diamine and monoamine) to separate ultrafine quartz from...Web

Flotation experiments results indicate that the calcite flotation was strongly depressed by CLS, whereas the smithsonite flotation was barely interfered. The flotation separation of smithsonite from calcite could be achieved at pH 10. ... quartz and calcite using alkyl diamine ether as collector. Trans. Nonferrous Metals Soc., 28 (2018), pp ...Web

The most favourable pH for the flotation of quartz in the size ranges under investigation was pH 9.0 for both types of amine used, ether monoamine and ether diamine. Ether monoamine was more efficient than ether diamine in the flotation of fine quartz. At higher pH levels, ether diamine yielded better results than ether monoamine in the case …Web

Quartz flotation from iron ore is enhanced by synergism between cationic collectors. • Assessment of literature data and predictive computations on pK a of etheramines. • QM calculations of monoamine - diamine interaction confirmed the flotation results. • pK a difference of amino groups from collectors minimizes electrostatic repulsion. •Web

The single mineral flotation tests showed the feasibility of selective albite flotation from quartz at around pH 2 using a mixture of cationic diamine and anionic sulfonate collectors or a combined cationic-anionic collector of diamine-dioleate. ... J.L., and Smith, R.W., 1991, "Diamine flotation of quartz," Minerals Engineering, Vol. 4, No ...Web

In this study, flotation of phlogopite, biotite, and quartz (for comparison purposes) in the presence of Flotigam®EDA (EDA) (commercial ether monoamine collector), at pH 10 was investigated through the single mineral micro–flotation experiments. Adsorption behaviors were explored by the contact angle, residual surface tension measurements ...Web

Vidyadhar reported a mechanism of feldspar flotation from quartz with mixed alkyl diamine/ sulfonate collectors at pH = 2 (Vidyadhar and Rao, 2007). For alkaline flotation, El-Salmawy reported the ...Web

adding iso-alcohols to ether diamine increases the quartz flotation recovery from 52 to 84% at the iso- alcohol concentration of 2.6 × 10 - 5 M ( Fig. 1 ). W ith a constant ether diamine ...Web

Filippov et al. found that the addition of a C13-rich iso-alcohol to ether diamine increased the quartz flotation recovery from 52 to 84% at pH 10. In addition, Filippov, et al. [ 78 ] observed that adding iso-alcohols to ether diamine could also improve the floatability of Fe-bearing mica silicates at pH 8, while use of the amine alone ...Web

A new surfactant butane-3-heptyloxy-1,2-diamine [CH3(CH2)6OCH(CH3)CH(NH2)CH2NH2; BHLD] was synthesized. It has been …Web

Primary monoamines have been long used and studied as flotation collectors for quartz. In the past several mechanisms have been proposed to explain the manner in which the amines adsorb onto and render the mineral hydrophobic and, thus, floatable. From past data and proposed mechanisms and reinterpreting some of the past data it appears …Web

It was determined that ether monoamine was more efficient than ether diamine in the flotation of fine (-74 to +38 µm) quartz at pH of 9, yet, at a higher pH, ether diamine showed better results ...Web

The flotation of quartz with diamine was very efficient over the concentration in which iono-molecular complexes predominate and a further increase in concentration leads to the appearance of precipitates of amines according to the log concentration diagrams for n-propyl-1,3-diamine collector (Fuerstenau and Raghavan, 1977).Web

adsorption mechanisms of L0-503 in the petalite and quartz flotation systems were revealed. A possible adsorption model of L0-503 in the petalite flotation system is proposed. This study provides new insights and a theoretical basis for improving the separation of petalite and quartz in the flotation process. 2. Materials and Methods 2.1.Web

This way, as the diamine concentration became higher than 5 mg/L for quartz and higher than 10 mg/L for magnetite, θ decreased steadily for either quartz (from 74° to 40°) or magnetite (from 66° to 37°), although the magnitude of θ was sufficiently high to promote the flotation of ultrafine particles (d 50 =7.5 μ m) 33.Web

A new surfactant butane-3-heptyloxy-1,2-diamine [CH 3 (CH 2) 6 OCH(CH 3)CH(NH 2)CH 2 NH 2; BHLD] was synthesized. It has been innovatively used as a collector in the flotation of quartz. In this present study, the flotation behaviors of quartz with BHLD were investigated by micro-flotation of quartz. It was found that the recovery of the quartz ...Web

The 12 C diamine is a stronger collector for quartz than the 12 C monoamine. Probable surface chemical phenomena giving rise to the observed experimental results …Web

The mechanism of selective feldspar flotation from quartz in mixed alkyl diamine/sulfonate collectors at pH 2 is distinguished. The charge difference between microcline and quartz at pH ⩽ 2 with quartz exhibiting an iep at pH 2 and microcline charged negatively down to pH 1.5 is found to be the key factor for the preferential …Web

The flotation performances of DPDA to quartz and hematite were investigated by the flotation tests. The adsorption mechanism between DPDA and mineral surface was also investigated by MD simulation, zeta potential measurements, fourier transform infrared spectroscopy (FTIR) measurements, and X-ray photoelectron …Web

1. Introduction. Spodumene is one of the common hard rock lithium resources which shows reliable industrial value [1], [2].Feldspar and quartz are the main gangues associated with spodumene [3], [4].Flotation is the most common method used to concentrate spodumene, especially to concentrate complex or low grade spodumene …Web

Flotation is the widest applied method for quartz removal from other valuable minerals [4], [5]. For iron ore, reverse flotation of quartz using cationic collectors has …Web

This paper presents the diamine flotation of calcite ore using zeta potential, Hallimond tube flotation and adsorption by FTIR studies. Optimum conditions for removal of sulphide impurities are outlined and the results were discussed. ... Scott J, Smith RW (1991) Diamine flotation of quartz. Miner Eng 4:141–150. Article Google Scholar Sirkeci ...Web

Chipakwe et al. examined the efect of a polyacrylic acid-based grinding additive (GA) through flotation separation of magnetite from quartz (size fraction of − 106 + 38 μm) …Web

Filippov et al. found that the addition of a C13-rich iso-alcohol to ether diamine increased the quartz flotation recovery from 52 to 84% at pH 10. In addition, Filippov, et al. [ 78 ] observed that adding iso-alcohols …Web

The collecting performances of N-dodecylethylene-diamine (ND) to quartz and hematite were studied via single mineral flotation. Experimental results show that ND has stronger collecting ability to ...Web

Diamine flotation of quartz and magnetite 1293 Additionally, in earlier work [4,5] the possibility of surface precipitation of amine species on quartz was considered and deduced to be an important mechanism in quartz flotation. Castro, et al. [20] and Laskowski [21] have also shown the importance of surface precipitation in amine …Web

Surprisingly, ether diamine which is a strong collector for quartz does not float kaolinite at pH 10. Ether monoamine was found to be a weak collector for kaolinite, with only 15.3% kaolinite ...Web

However, the influences of complex flotation system on fine quartz flotation still need to be scrutinized. In this study, alkyl ether amine (Flotigam EDA-C from Clariant) was used as a collector for the flotation of quartz. It shows better collectability for the flotation of quartz at about pH 10.0 (±0.2).Web

Based on the results of the zeta potential measurements, the FT-IR measurements and the MD simulation in this paper, it is revealed that the BHLD collector adsorbs onto the quartz surface through...Web

Flotation and adsorption of quartz with the new collector butane-3-heptyloxy-1,2-diamine Cheng, Zhouyueyang ; Zhu, Yimin ; Li, Yanjun ; Han, Yuexin A new surfactant butane-3 …Web

The dissolution of carbonates at low pH value facilitates the quartz flotation. At pH 4.8, the P 2 O 5 grade, P 2 O 5 recovery and quartz removal ratio are 30.82%, 82.00% and 62.20%, respectively. Calcination can be employed to separate calcite gangue; however, it should be applied after quartz flotation to avoid the formation of CaSiO 3 …Web

A new surfactant butane-3-heptyloxy-1,2-diamine [CH3(CH2)6OCH(CH3)CH(NH2)CH2NH2; BHLD] was synthesized. ... It has been innovatively used as a collector in the flotation of quartz. In this present ...Web

Quartz flotation from iron ore is enhanced by synergism between cationic collectors. Assessment of literature data and predictive computations on pKaof …Web

A new surfactant butane-3-heptyloxy-1,2-diamine [CH3(CH2)6OCH(CH3)CH(NH2)CH2NH2; BHLD] was synthesized. It has been innovatively used as a collector in the flotation of quartz.Web

A new surfactant butane-3-heptyloxy-1,2-diamine [CH3(CH2)6OCH(CH3)CH(NH2)CH2NH2; BHLD] was synthesized. It has been innovatively used as a collector in the flotation of quartz.Web

It was observed that ether diamine was more effective in the flotation of medium and coarse quartz, while ether monoamine performs better in the case of fine …Web

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 spectroscopy, attenuated total reflection flourier transformed infrared spectroscopy (ATR-FTIR), scanning electron microscope (SEM), X-ray …Web