The cationic diamine collector used was DDA, supplied by Aladdin Chemistry Co., Ltd., Shanghai, China. DDA was dissolved in dilute HCl. Analytical standard pyrene ... In order to verify the effect of HF pretreatment on the flotation separation of feldspar and quartz, bench scale flotation tests were carried out using 300 g minerals in a ...Web
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A UV-Vis spectrophotometer (WFZUV-2100, Shanghai Zhixin Instrument Co., Ltd., Shanghai, China) was used to conduct an absorbance test of the butyl xanthate solution. ... The synergistic depression of lime and sodium humate on the flotation separation of sphalerite from pyrite. Miner. Eng. 2021, 163, 106779.Web
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The contact angle measurement of each sample was conducted three times using a SL200C contact angle instrument (Shanghai, China), and the mean value was taken as result. 2.4. ... Flotation separation of calcium-bearing minerals is a challenge in the mineral processing. To achieve clean and efficient flotation separation of apatite …Web
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Separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl xanthate (PBX) as collector were ...Web
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Low-grade and high-reserve scheelite, which is associated with calcite, has similar surface properties that cause difficulty in separation. In this study, sulfomethylated kraft lignin (SMKL) was used as a novel eco-friendly inhibitor for the flotation separation of scheelite and calcite. The flotation test results showed that 60 mg/L SMKL had a …Web
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Fluorite (CaF2), as an important strategic mineral source, is usually separated from calcite by the common froth flotation method, but this separation is still not selective enough. The development of a …Web
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Oily sludge (OS) contains a large number of hazardous materials, and froth flotation can achieve oil recovery and non-hazardous disposal of OS simultaneously. The influence of flotation parameters on …Web
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Table 2 shows the flotation separation results of artificially mixed fluorite and calcite ore with 2 × 10 −5 mol/L SLS as the collector and 10 mg/L dextrin as the depressant at pH = 7. The ratio of fluorite to calcite was 1:1, 1:2 and 2:1, the recovery of fluorite was 86.44%, 91.13% and 91.56%, respectively.Web
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The paper presents a novel method for the flotation separation of Cu2+ using microcrystalline adsorption system and the determination of trace Cu2+ in water samples by spectrophotometry.Web
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The results showed that after flotation purification, the impurity content in PG was significantly reduced, the soluble phosphorus content decreased from 0.48 to 0.07%, the PG purity increased ...Web
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In this paper, the flotation separation of diaspore and kaolinite by mixing tert dodecyl mercaptan (TDM) with sodium oleate (NaOl) as a mixed collector is …Web
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The experimental raw materials bastnaesite and monazite were produced in Bayan Obo, Inner Mongolia, China. The solid samples were crushed into −2mm particles, then ground with a ceramic ball mill, enriched by magnetic separation and gravity separation methods, and then pure minerals were screened to collect samples with a …Web
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Flotation. According to the difference in physicochemical properties of mineral particle surfaces, flotation is the method that selectively enriches the target minerals in the pulp at the gas-liquid interface and separates them from the pulp, thus realizing the mineral separation. It is also known as floating separation.Web
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In the flotation of semi-soluble minerals such as calcite and fluorite, Ca2+ is one of the common dissolved components influencing the collector adsorption behaviors on the mineral surfaces. However, there is very limited research focusing on how the dissolved Ca2+ affects the separation of fluorite and calcite. In the study, with sodium oleate …Web
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exhibited exhibited a higher selectivity for the flotation separation of scheelite from calcite and fluorite than the 733-collector alone.. Huang et al (2016) found that there is a high selectivity and recovery for the flotation of scheelite from calcite at pH 7 using Corresponding author. E-mail address: liucheng309@sina (C.Liu)Web
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All above reagents were analytically pure and purchased from Sinopharm Chemical Reagent Co., Ltd. in Shanghai, China. The effects of frother dosage and …Web
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Precipitation flotation separation including two stages of chelation precipitation and flotation separation, and the corresponding precipitation efficiency and flotation efficiency of Mo and Re were ... and the turbidity of solution after flotation separation was determined by water turbidimeter (WGZ-2000, Shanghai Xinrui …Web
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Artificial flotation wastewater adsorbed by activated carbon : A weighed amount (0.1 g) of powder activated carbon was added to amine solutions (50 µg/mL, 100 mL) and shaken continuously for 10 min in a Heheng TS-100C oscillator (Shanghai, China). Approximately 10 mL of pulp was taken from the carbon-amine solution as artificial …Web
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The flotation separation of enargite from copper sulfide minerals is difficult owing to the similar floatability and reagent adsorption characteristics of these minerals. In this study, the effect of oxidation treatment using NaClO flow with FeCl3 on the flotation separation of covellite and enargite was systematically investigated. Micro-flotation …Web
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A schematic diagram of precipitation flotation and volatilization procedures for Re recovery and purification from dilute solution are described in Fig. 1. Fig. 1 (a)-(c) shows the experimental flowsheet for the recovery of Re from solutions by precipitation flotation. A 100 mL water solution with an initial Re concentration of 100 mg/L was precipitated by …Web
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For the flotation separation of plastic from spent LIBs, each test 15 g of the LIB sample was used to investigate the separation efficiency of plastic from the metals by various dosages of MIBC. The grade of Cu, Al, and plastics in feed and concentrate was measured via manual sorting. After the separation of plastic, flotation experiments were ...Web
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Flotation Separation. Floatation is a main method to separate the ores by the different natures of wetting by water. The hydrophobic mineral will be gathered on the bubbles …Web
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And TDM was supplied by Shanghai Macklin Biochemical Co. Ltd. All the reagents were ready-to-use to avoid drug failure. The analytical purity of hydrochloric acid (HCl) and sodium hydroxide (NaOH) were used as pH regulators of the system. ... Flotation separation of diaspore from kaolinite, pyrophyllite and illite using three cationic ...Web
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In this paper, a surfactant, atlox4862 (formaldehyde condensate of methyl naphthalene sulfonic sodium salt) (MF), was introduced as a depressant for reverse flotation separation of sericite from graphite. Natural flake graphite has a strong hydrophobic property. After interacting with MF, the graphite became moderately …Web
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1. Introduction. The separation of chalcopyrite and talc has attracted vast attention recently [1], and the flotation separation of chalcopyrite from talc is a hot issue [2], [3], [4].It is well known that the flotation process will be impacted by the different wettability of minerals [5], [6], [7].Given that chalcopyrite and talc both have naturally excellent …Web
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The flotation separation effects of kaolinite and quartz mixed minerals under different conditions were analyzed by calculating the characteristic parameters such as K, R ... (Shanghai China) was used to crush the two samples to below 0.25 mm in size. Then the kaolinite and quartz samples were evenly divided into sizes smaller than 0.25 mm, and ...Web
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Flotation separation is mainly used for removing particulates from aqueous dispersions. It is widely used for ore beneficiation and recovering valuable materials. This paper reviews the hydrodynamics of flotation separations and comments on selected recent publications. Units are distinguished as cells of ideal and non-ideal flow. A brief …Web
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Nowadays, most oilfields have entered the high water cut stage of waterflood development. The importance of oil–water separation technology becomes more obvious. Gravity separation is one of the most commonly used treatment techniques for produced fluid. The gravitational separator has a large processing capacity and a wide application …Web
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The flotation experiment results showed that scheelite and calcite could be efficiently separated under the following conditions: pulp pH=9.5, NaOL concentration of …Web
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The flotation separation behavior and conditions of mercury (II) using ammonium sulfate-potassium iodide-butyl rhodamine B(Bu-RhB) system are investigated. ... (Shanghai No.3 Analysis Equipment ...Web
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Introduction. Molybdenite (MoS 2) is the primary source of molybdenum (Mo), and approximately half of the Mo production is obtained from copper (Cu)–Mo sulfides, mainly porphyry Cu deposits (Ansari and Pawlik, 2007; Song et al., 2012; Hirajima et al., 2014).At present, the flotation separation of Cu minerals and Mo minerals in this type of ore is …Web
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The guar gum and PAX were purchased from Shanghai CIVI Chemical Technology Co., Ltd. In this study, all reagents were of analytical grade. Figure 1. XRD pattern of talc (a) and pyrite (b). ... the flotation separation effect of pyrite and talc after the intermolecular assembly of the solid–liquid interface flotation agent was investigated ...Web
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The influence of fine particles on the flotation separation of minerals is becoming increasingly important as new fine grained …Web
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Shanghai, China. NaClO and FeCl 3 are common copper sulfide mineral depressants and, hence, were also used in this study. Deionized water was used throughout, and all exper-iments were conducted at 26 ± 1 °C. 2.2. Methods . 2.2.1. Micro-Flotation Experiments Micro-flotation tests of the individual minerals were carried out in a 40 mL flotationWeb
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