The flotation results demonstrate that Na2ATP exhibits a more intense depression on the flotation of dolomite than that of magnesite and can separate effectively magnesite from dolomite, which ...
Micro-flotation results indicated that the addition of P (AA-AMPS) could achieve the efficient separation of apatite from dolomite at pH 8.5 by selectively depressing the dolomite flotation, in ...
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 …
Artificial mixed flotation tests were conducted using 1.5 g of fluorapatite and 0.5 g of dolomite samples. In the flotation experiment, depressants were added first, followed by pH adjustment of the slurry, and then the collectors were introduced. The pH regulator and flotation reagents were allowed to react for 1 min and 3 min, respectively.
Dolomite, a prominent calcium-bearing gangue mineral found in carbonate-type zinc oxide ores, poses a significant challenge for effective flotation separation …
This paper presents a comprehensive study on the selective flotation of a multi calcium-bearing minerals ore, focusing on the efficient removal of dolomite and …
GA exhibited selective depression on dolomite, thus, enabling successful flotation separation of apatite from dolomite. In this work is reported the selective depression mechanism of gallic acid, a novel environmentally friendly depressant for dolomite in the flotation separation of apatite and dolomite.
1. Introduction. Calcite and dolomite are frequently encountered in sedimentary ores alongside valuable minerals. Issues arise when these latter are calcium-bearing minerals too (Jiao et al., 2023, Pereira et al., 2023).Froth flotation is usually introduced in the upgrading process of this type of ores, especially in the absence of …
Mining, Metallurgy & Exploration - Separation of dolomite from phosphate is the most challenging problem in phosphate mineral processing. ... dolomite flotation of the cleaner concentrate, and scrubbing the cleaner concentrate in quartz sand. ... 4.1.3 Flotation Cell. A model XFD-63, single-cell flotation machine was used for all lab …
Single and artificially mixed minerals (mixture of magnesite and dolomite in mass ratios of 1:1 and 9:1, respectively) micro-flotation tests were performed in a 30 mL micro-flotation cell of a laboratory XFG self-aeration flotation machine (Jilin Exploration Machinery Plant, China) and the micro-flotation test is shown in Fig. 2.Micro-flotation …
To perform micro-flotation experiments, a micro-flotation cell (30 mL) of a experimental XFG self-aeration flotation device (Jilin Exploration Machinery Plant, China) was used at an agitating speed of 1800 rpm. The deionized water (20 mL) and specimen (2.0 g) were put into the micro-flotation cell to perform the micro-flotation experiment.
Research on depressants has focused on replacing toxic depressants with nontoxic ones at present (Feng et al., 2019).Natural polysaccharides, such as starch, xanthan gum, cellulose and dextrin, have a depression effect for selectively depressing dolomite flotation (Feng et al., 2020).Pectin, as a high-molecular polysaccharide (its …
Flotation tests conducted on a sedimentary phosphate ore have affirmed the applicability of the castor oil derived collector in calcite and dolomite flotation (in the …
This review aims to explore the advances in existing technologies and newer technologies that are suitable for liberating and separating eleven metals deemed critical in Australia: cobalt (Co), gallium (Ga), germanium (Ge), indium (In), lithium (Li), nickel (Ni), rhenium (Re), tellurium (Te), tin (Sn), tungsten (W), and vanadium (V), from solid …
Flotation separation of magnesite from dolomite in the presence of SSZS (sodium silicate modified with zinc sulfate) as an inhibitor and NaOL (sodium oleate) as a collector has been studied via flotation tests, zeta potential measurements, contact angle measurements, and Fourier transformation infrared spectroscopy analysis (FT-IR). The …
a. Mineral associations b. surface liberation degree and c. D 80 of CFA, calcite, and dolomite particles comprised in the flotation feed. Download : Download high-res image (333KB) Download : Download full-size image; Fig. 8. Surface liberation of calcite and dolomite grains comprised the flotation feed.
Flotation using a fatty acid collector is always restricted by ions, temperature, and other factors in production. In this study, sodium fatty alcohol polyoxyethylene ether carboxylate with 3, 5, and 7 EO repeating units (AEC 3 Na, AEC 5 Na, and AEC 7 Na, respectively) were synthesized to improve the performance of fatty acids. The flotation …
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), …
In this case, the selective flotation of fluorapatite and dolomite can be attained to a great extent because of their significant differences in flotation performance. Download: Download high-res image (177KB) Download: Download full-size image; Fig. 5. Effect of (a) NaOL and (b) PBTCA on the flotation of fluorapatite and dolomite at pH 9.50.
Option 1 offers three methods for reducing MgO content in the concentrate from the Crago process, including adding a dolomite depressant in the rougher flotation …
2.9.2. DFT simulation. DFT is extensively employed to analyze the chemical reaction mechanisms between flotation reagents and mineral surfaces, thereby enhancing the efficiency and selectivity of the flotation process [30], [31].The optimization of geometry and calculation of energy for the dolomite crystal and its adsorption system were …
Flotation of dolomite from apatite was investigated, using dodecylamine hydrochloride or sodium oleate as the collector, with and without inorganic modifiers such as sodium chloride.Separation of dolomite from apatite was anticipated from the single mineral experiments under various pH and collector concentration conditions. Flotation …
Dolomite impurities are increasing in the currently mined phosphate deposits in Florida. Several research efforts have been conducted in various laboratories around the globe to find methods to economically removing the dolomite. However, a universal and cost-effective process is not now in commercial use. In this paper, a new process for …
An XFG-type flotation machine with an impeller speed of 1700 rpm (Changchun, China) and a Plexiglas cell with an effective volume of 40 mL was employed for flotation testing. 2.0 g of pure magnesite or dolomite was used for single mineral flotation experiments. 1.0 g magnesite and 1.0 g dolomite were well mixed and used …
Phosphate ores upgraded by flotation are widely used as vital raw materials for the sustainable production of phosphate fertilizers to maintain the food supply. High-grade phosphate reserves become more and more depleted. Low-grade phosphate mining and processing are in the spotlight of the fertilizer industries to cope with the exponential …
Kim et al. faced the problem by using a transmission electron microscope and a tiny fluid cell in which they placed a 3-µm-sized seed of crystalline dolomite …
different bacteria as dolomite depressor in the flotation of apatite (Bacillus subtilis and Mycobacterium phlei). The results showed that the three bacteria had adsorption on dolomite and apatite. Under certain pH conditions, the adsorption of dolomite by Mycobacterium phlei is far superior to that of apatite, which can depress the dolomite ...
Download Citation | Selective removal of dolomite from rare earth element‐bearing phosphorite by flotation and leaching and the adsorption mechanism of agents on mineral surfaces | The rare ...
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 …
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 …
