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3.1.2. Test method for the effect of E. coli on collophanite and dolomite floatability The flotation test carried out in a 40cm3 flotation machine at room temperature. For each test, 4g samples were put into the flotation cell, add 40cm3 of deionized water, stir for 1 …
This book highlights the principles and technologies of flotation machine mainly used in mineral processing in detail. Froth flotation is one of the most important mineral processing techniques.
The synergistic effect of sodium dodecyl benzene sulfonate (SDBS) on the flotation separation of magnesite and dolomite using sodium oleate (NaOL) as a collector has been studied through flotation experiments, zeta potential measurements, contact angle measurements, Fourier transformation infrared spectroscopy analysis (FT-IR), particle size …
It is well documented that flotation has high economic viability for the beneficiation of valuable minerals when their main ore bodies contain magnesium (Mg) carbonates such as dolomite and magnesite. Flotation …
Moreover, dolomite is a sparingly soluble mineral with a K sp of 1 × 10 −19.35 (Chen and Tao, 2004). There may be too few Ca 2+ ions available to react with benzohydroxamic acid and to provide a sufficient degree of hydrophobicity. For monazite flotation, the three collectors appear to have achieved a good floatability at a pH at ...
Magnesite was efficiently separated from dolomite with gellan gum as depressant. Gellan gum exhibited excellent selective depression effect on the dolomite. Gellan gum adsorbed stronger on the dolomite than magnesite. A conceivable flotation separation model of magnesite and dolomite was proposed.
Microflotation tests were conducted using a modified Hallimond tube (Fig. 1).The flotation cell volume is approximately 170 mL, made of glass, and comprised of three parts - the lower part has a silicate frit at the bottom; the extensor part connects the lower part and the upper part, and the upper part is where the floated fractions can be collected.
Micro-flotation tests were carried out using XFG flotation machine [32]. For each flotation test, 2 g of sample and 40 mL distilled water were added to the flotation cell and mixed for 2 min while the pH of pulp was conditioned using pH regulator. Depressant and collectors were then added in turn and conducted for 3 min respectively. Scrape the ...
Micro-flotation experiments were carried out in an XFG flotation machine (Exploring machinery Plant, Changchun, China) equipped with a 40-mL cell at 2000 rpm agitation speed. For single mineral
Flotation tests were conducted at room temperature, using a laboratory flotation machine with a 1.25 L cell. A 14% suspension, prepared with tap water, was conditioned for 3 min. ... Theoretical grade-recovery of a. calcite, b. dolomite and c. carbonates (calcite + dolomite) flotation along with optimal experimental results. 4.
Dolomite, a prominent calcium-bearing gangue mineral found in carbonate-type zinc oxide ores, poses a significant challenge for effective flotation separation alongside smithsonite due to their highly similar surface properties. The present study explores the potential of 2-(4,4-dimethylpentan-2-yl)-5,7,7-trimethyloctanoic acid (2-DMPT) as a collector for the …
Rare earth elements (REE) are key components of many emerging green technologies. This leads to an increase in demand for REE, hence to the development of new deposits, such as the Niobec carbonatite rare earth deposit in Quebec, Canada. One of the valuable minerals in this deposit is monazite, one of the primary sources of REE. Although there has already been …
Activation of Dolomite Flotation by Ferrous Hydroxide and Carbonate Haiping Zhao, Xiaopeng Niu, Bingxu Dong, Xianbing Jia and Renman Ruan Special Issue Sulphate and Carbonate Minerals ... A 0.5 L mechanical single-trough flotation machine was used to conduct the flota-tion tests. The impeller speed and aeration rate were fixed at 2000 r/min ...
Simultaneous ultrasonic treatment and flotation improved the flotation separation efficiency of magnesite and dolomite, with the flotation recovery of magnesite concentrate reaching 91.06%. ... The flotation experiment was conducted using an XFG hanging trough flotation machine. The flotation test procedure (Fig. 3) included the following ...
Flotation feed material was conditioned at pH 10.0 with fatty acid followed by flotation of apatite and dolomite at pH 8. The float fraction was then reconditioned at a pH …
temperature and used as the flotation feed; subsequently, the filtrate was discarded. Fig. S3 is a flowchart of the tannin pre-treatment process. 2.3. Microflotation test Flotation tests were performed in an XFG-ii hanging-trough flotation machine (Jilin Prospecting Machinery Fact-ory) operated at 1992 r/min [39]. For each test, 2.0 g of the
The influence of the H 2 SO 4 dosage on the FA/dolomite flotation was examined using a laboratory mechanical flotation-machine. The flotation results only with oleate at natural pH (about 6.5) are also reported. In terms of …
As shown in Fig. 4, compared with the single collector of NaOL, the flotation recovery of magnesite with the mixed collector NaOL-DP improves 10–40% at the specified pH range, except for the condition of pH 11 declining 5%.The maximum recovery of 85% for magnesite was obtained at pH 10, and the selectivity index of two minerals was 3.78. The …
Description. Dolomite is a calcium magnesium carbonate mineral that has many characteristics similar to calcite. In places where access to limestone is not available or more costly, dolomites are used in its place for …
The flotation of dolomite was depressed intensively by the depressant PBTCA whereas the flotation performance of fluorapatite was only affected slightly in the pH range of around 7–11.64. The flotation separation of fluorapatite and dolomite was realized with the reagent scheme of 0.32 mM NaOL and 0.2 mM PBTCA at pH 9.5.
To achieve flotation separation of apatite and dolomite, depressants are required, but conventional depressants have several drawbacks. Hence, the development of effective and environmentally friendly depressants is of great importance. This study aimed to investigate the depressive effect of gallic acid (GA) on the flotation separation of ...
DOI: 10.1016/j.colsurfa.2023.131957 Corpus ID: 259709380; Insight into the inhibition mechanism of carboxymethyl cellulose for flotation of dolomite and fluorapatite: Experimental and DFT studies
To assess the efficacy of a reagent system employing NaPP as an inhibitor and 2-Cl-9-ODA as a collector in the reverse flotation separation of apatite from dolomite and calcite, flotation experiments for each single mineral were performed. The equipment used in the micro-flotation experiments was an XFG Ⅱ-35 flotation machine.
The flotation results of apatite and dolomite with different CA dosages are displayed in Fig. 5. The flotation recovery of dolomite slightly decreases from 94 % to 81 % as CA dosage increases to 5 × 10 −4 mol/L. The results indicate slight effect on dolomite flotation with CA addition.
In the field of mineral processing, the successful flotation of target minerals requires sufficient liberation through grinding. The aim of this paper is to compare and …
Step 1: Turn Large stones into small stones. Transport the bulk dolomite raw material into the jaw crusher by the vibrating feeder for the coarse crushing process, and then send it to the cone crusher for medium to fine crushing processing until it reaches the feed fineness of the grinding machine (15-40mm) before discharge.. Step 2: Grind small stones …
Amino-acid-based surfactants are promising collectors for the flotation of calcium-bearing minerals. In this study, N-hexadecanoylglycine (C16Gly) was used as a collector in the flotation system of fluorapatite (FA) and dolomite.Microflotation tests using single minerals implied that C16Gly could be applied as an efficient collector for FA over dolomite at pH 9 and …
The micro-flotation experiment employed a compact flotation machine from Jilin Prospecting Machinery with a spindle speed of 1500 r/min. ... surfactant NP-10 in NaOL solution improved the removal of calcium-magnesia gangue minerals from fluorapatite by reverse flotation. Dolomite was separated through reverse flotation under the condition of 8. ...
The recoveries of dolomite were still lower than 10 % when the PCP concentration increased to 240 mg/L in the whole pH range investigated. The results indicated that the pH value could have an impact on the flotation of dolomite when the initial concentration of PCP was increased to a high level (over 320 mg/L) compared to the case in Fig. 8 (a
In this paper, Na 2 ATP was first applied as a depressant in the flotation separation of magnesite and dolomite with sodium oleate. The significant influence of Na 2 ATP on the flotation behavior of magnesite and dolomite was investigated via flotation tests. The selective adsorption behavior of Na 2 ATP on different mineral surfaces was studied through adsorption …
