##tihuan2##Flotation performances of quartz and hematite as a function of slurry pH at optimum starch concentration (6.67 mg/L) and NHPA/DDA concentration (50.00 mg/L) are shown in Fig. 10. It shows that excellent flotation performance of quartz could be achieved when slurry pH ranged from 4.50 to 7.00, but it sharply decreased when slurry pH …
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##tihuan2##The flow chart of quartz flotation is shown in Fig. 1.A 40 mL XFG tank flotation machine was used to conduct the flotation experiments [19]. 2.00 g of quartz particles and 30 mL of DI water were poured into the flotation tank and stirred to adjust the pulp for 2 min, after which pH regulator, activator (only present in anionic flotation), and …
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##tihuan2##Cetyltrimethylammonium bromide (CTAB) served as a cationic collector for feldspar, while hydrofluoric acid (HF) acted as a depressant for quartz at a pH of 2.5–3. …
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##tihuan2##In cases where the contents of quartz in phosphate ores are excessively high, the direct flotation process for these phosphate ores using anionic collectors leads to the inclusions of fine-grained quartz particles in flotation concentrates, carried by the air bubbles within slurry, ultimately causing the reductions in the grades of apatite ...
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##tihuan2##The flotation behaviour of quartz using DDA–HCl and DDA microemulsion C (W DDA = 50%) as the collector with a DDA dosage of 100 g/t at pH of 3.0–11.0 is shown in Fig. 7. It can be found that a strong acid or alkali environment is not conducive for quartz flotation with DDA microemulsion and DDA–HCl.
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##tihuan2##Search ScienceDirect. Minerals Engineering. Volume 182, 31 May 2022, 107589. ... Normally, anionic reagents including FAs are not suitable for quartz flotation (nonactivated quartz) for its negatively charged surface at all pH values. However, the adsorption of the VOCs on the surface of quartz was surprisingly captured in two …
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##tihuan2##The maximum recovery rate of azurite with PEBH was found to be 95 %, while that of quartz and calcite was only 6 % and 18.5 %, respectively. Therefore, the optimal pH for azurite flotation using amidoxime surfactant PEBH is 11, while the optimal pH for quartz and calcite flotation is 6.5 and 8. Download: Download high-res image …
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##tihuan2##The best choice is the quartz sand mineral, which is available and commonly used. Kaolinite is a silica-oxygen compound considered as common impurity in quartz sand minerals. Many studies have been conducted on its separation from quartz by flotation. Quartz is a common associated impurity in minerals. It has been widely studied due to …
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##tihuan2##The third sample was a flat surfaced glass material for laboratory use (Baxter Scientific, USA). These SiO 2 based flat surfaced glass samples were used in the AFM analyses in the place of quartz mineral particles to obtain clear AFM images. The glass samples were cut and cleaned with ammonium peroxide mixture (APM) which is a …
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##tihuan2##In this work, polyaluminum chloride (PAC) was investigated to study its effect on the reduction of quartz entrainment in the batch flotation of synthetic mixtures of …
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##tihuan2##Using C12Giy as a flotation collector, it can effectively separate dolomite and quartz from collophane by reverse flotation. In addition, the potential adsorption mechanism of the amphoteric collector C12Giy was studied through zeta potential test, infrared spectroscopy and, XPS analysis. The main conclusions are as follows: (1)
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##tihuan2##The flotation results showed that LS exerted high selectivity for hemimorphite, and flotation separation of hemimorphite from quartz was achieved at an LS concentration of 3.4 × 10 −4 mol/L and a pulp pH of 7. In contrast to sodium oleate (NaOL), LS exhibited a higher Gaudin's selectivity index (SI) of 67.58 under the optimal conditions ...
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##tihuan2##Dodecylamine hydrochloride (DAHC) surfactant was used as a collector for effective apatite recovery through flotation separation in siliceous phosphate ore, wherein quartz is the main gangue mineral. The roles of pH and collector concentration were investigated, and the adsorption of the collector on the minerals and related properties …
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##tihuan2##The flotation results of malachite and quartz with DSHA, SHA, and SIBX are shown in Fig. 1. The effect of pH on the flotation recovery of malachite under 200 mg/L DSHA is given in Fig. 1 (a). This indicates that the flotation recovery of malachite increases at a varying pH of 3 to 9.
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##tihuan2##Flotation tests on the artificial mixture were performed on the magnetite and quartz mixture with a mass ratio of 2:1 to determine the effect of improved quartz collection separation from magnetite. The flotation feed of the mixture had a Fe grade of 58.7 %. As shown in Fig. 5, the addition of AAG influences both recovery and grade. The result ...
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##tihuan2##Effect of Jameson cell operating variables and design characteristics on quartz-dodecylamine flotation system Atıf İçin Kopyala ÇINAR M., ŞAHBAZ O., ÇINAR F., …
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##tihuan2##2.2. Micro-flotation test. An advanced Hallimond tube was chosen in the micro-flotation experiments, and 2 g minerals (bastnaesite, calcite, quartz, bastnaesite-calcite or bastnaesite-quartz mixture with a mass ratio of 1:1) with the particle size distribution from 38 to 74 μm were used in each test following the reported procedure …
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##tihuan2##Flotation experiments were investigated the flotation performance and verified the adsorption behavior of NHPA on quartz surface. The results of FT-IR spectra and zeta potential measurements demonstrated that the adsorption between NHPA and quartz surface was mainly through electrostatic force and hydrogen bond force, which …
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##tihuan2##The flotation study of pure quartz and hematite-quartz mixture was carried out using a 60 mL capacity hanging cell flotation machine. It was manufactured by Wuhan Prospecting Machinery Factory. The ILs and DDA in Table 2 were used as flotation collectors, while soluble starch (1% by weight) was used as hematite inhibitor.
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##tihuan2##This research investigates the influence of three surfactants with different charges of polar groups, sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and octanol, combined with …
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##tihuan2##Flotation of quartz. Standard flotation tests were conducted similarly to those described for phosphate flotation studies. However, the pulp contained 12% solids, pH was kept at 6.2, the quartz conditioning time with Flotigam EDA 3B (0.5 mg g −1 quartz) was 2 min and the air injection into the cell was 6 L min −1. Studies of flotation …
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##tihuan2##Wash the treated quartz with ultrapure water several times until it was neutral, and dry it thoroughly in drying oven. High-purity hematite comes from South Africa. The sample was grounded to below 106um using a ball mill. A. Flotation study. The results of pure quartz flotation using ILs as collectors and DDA are shown in Fig. 1.
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##tihuan2##The mechanisms proposed improved flotation performance attributed to the high numerical concentrations of NBs (at least 2–3 × 10 10 NBs per gram of quartz) rapidly attaching to quartz surfaces, serving as "seeds" for the adhesion of larger bubbles generated in conventional flotation cells. This interaction facilitates the formation of ...
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##tihuan2##Flotation has been used by mineral and chemical engineers for the separation and concentration of aqueous suspensions or solutions of a variety of minerals, coal, …
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##tihuan2##Quartz, the gangue of phosphorite ore, is challenging to be separated at low temperatures. In this work, an amine-typed Gemini surfactant, N,N'-bis(dodecyldimethyl)-1,4-butane dibromide (BBD) was recommended as an emerging collector for reverse flotation separation quartz from phosphorite ore.
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##tihuan2##Flotation experiments performed on a quartz-feldspar mixture demonstrate that quartz can be floated selectively from feldspars in diluted solutions of hydrofluoric …
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##tihuan2##Results obtained from flotation experiments performed on three different quartz concentrates demonstrate that quartz can be floated in diluted solutions of …
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##tihuan2##The reverse flotation of the iron ore with etheramine collector is significantly impacted when the iron-bearing silicates and the kaolinite are present in the silicates gangue mineral complex. This paper aims to propose a new amidoamine collector N-[3-(Dimethylamino)propyl]dodecanamide for iron ore reverse flotation with a potential of …
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##tihuan2##Effects of starch preparation conditions on the flotation of quartz (flotation condition: 1 × 10 − 4 M DAC, 5 mg/L starch, flotation medium pH 8.5). Following the flotation tests for pure minerals, an artificial mineral mixture (the mass ratio of hematite to quartz was 1:1) was subjected to flotation tests at various starch solution ...
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