Dextrin as a non-toxic depressant for pyrite in flotation with
Abstract The role of dextrin in the xanthate flotation of pyrite and sphalerite was examined by means of flotation tests and microelectrophoretic measurements. Floatability and ζ-potential of both … Expand. 24. Save. The role of metal hydroxides at mineral surfaces in dextrin adsorption, II. Chalcopyrite-galena separations in the presence of ...
How calcite and silica can be depress in froth flotation of …
Froth Flotation has truly changed the mining/mineral/ metal industry and is one of the most revolutionary surface chemical separation technique.
Factors Of Affecting The Four Types Of Fluorite …
When the water quality is complex, the water for flotation fluorite must be pre-softened before entering the flotation separation stage, such as adding sodium carbonate for softening. 7. Optimize the flotation process. …
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Exploring Dextrin as an Eco-Friendly Depressant for Selective …
In this study, a polysaccharide, dextrin, was used as a green depressant for the flotation separation of scheelite from calcite. Micro-flotation experiments indicated that dextrin …
Adsorption and depression mechanism of an eco-friendly …
In this work, dextrin, an effective and eco-friendly organic compound, was used to separate fluorite from calcite.The depression performance and adsorption mechanism of it on the calcite surface were investigated by flotation experiments, contact angle measurements, Fourier transform infrared spectroscopy (FTIR) measurements, and X-ray photoelectron spectroscopy …
Pyrite depression by dextrin in flotation with xanthates.
Keywords: pyrite, dextrin, adsorption, flotation, xanthates, polysaccharides 1. Introduction Dextrin is environmentally safe regulator with the potential to replace toxic cyanide for the depression of pyrite in base-metal sulfide flotation (Laskowski et al., 1993; Rath et …
MODIFICATION OF PYRITE AND SPHALERITE FLOTATION BY DEXTRIN
Abstract The role of dextrin in the xanthate flotation of pyrite and sphalerite was examined by means of flotation tests and microelectrophoretic measurements. Floatability and ζ-potential of both minerals were found to be depressed in a suitable pH range due to the formation of their respective superficial metal hydroxide layers. The influences of surface oxidation and …
Effect of Dextrin on the Adsorption Behavior and Surface
Dextrin is a derivative of starch produced by partial thermal degradation under acidic conditions, which is usually used as a depressant in the mineral processing industry. Dextrin can also effectively depress coal particles in the reverse flotation process. To study the effect of dextrin on the flotation behavior of both coal and gangue mineral in coal reverse flotation, this research ...
Dextrin as a Regulator for the Selective Flotation of …
Abstract The adsorption of both dextrin and xanthate ions at the pyrite/aqueous solution and the galena/aqueous solution interfaces have been studied through batch adsorption tests. Batch flotation tests were also carried out on a chalcopyrite ore and a chalcopyrite-galena scavenger concentrate using dextrin. Dextrin adsorption isotherms on two types of surfaces of …
Optimization of Reverse Cationic Flotation of Low-Grade
Request PDF | Optimization of Reverse Cationic Flotation of Low-Grade Iron Oxide from Fluorspar Tails Using Taguchi Method | Due to gradual depletion of high-grade iron ores, there is a need to ...
A selective flotation of fluorite from dolomite using caustic …
A selective flotation of fluorite from dolomite using caustic cassava starch and its adsorption mechanism: An experimental and DFT Study ... polymers to assist or replace hazardous reagents is mandatory for a green transition. Polysaccharide-based (starch, dextrin, carboxymethyl cellulose, guar gum, etc.) polymers are one of the most used ...
Adsorption and depression mechanism of an eco-friendly …
The flotation results showed that at optimal conditions, Pb²⁺ ions could activate scheelite flotation and enhance the depression effects of water glass on the calcite and fluorite flotation ...
The use of dextrin in purification by flotation of …
DOI: 10.1016/J.MINPRO.2013.12.007 Corpus ID: 95071992; The use of dextrin in purification by flotation of molybdenite concentrates @article{Braga2014TheUO, title={The use of dextrin in purification by flotation of molybdenite concentrates}, author={Paulo Fernando Almeida Braga and Arthur Pinto Chaves and Ad{~a}o Benvindo da Luz and Silvia Cristina Alves França}, …
Removal of lead minerals from copper industrial flotation concentrates
For flotation tests, 4 mixed collector systems, MIBC (20g/t), lime and tow depression systems (sodium cyanide (60g/t)-zinc sulphate and dextrin (300g/t)-zinc sulphate) were used as collector ...
Dextrins as selective flotation depressants for sulfide minerals
Result of flotation of copper and lead from copper ore in the presence of dextrin N-8 and dextrin thermolyzed in the absence of modifying chemicals (DBM). Results in the absence of dextrin are ...
Dextrin as a non-toxic depressant for pyrite in flotation with
Application of dextrin as a flotation depressant, both in the laboratory and in commercial processes, has been reported. In the flotation of Cu–Pb sulfide ores at Kidd Creek dextrin is utilized in alkaline environment whenever the content of galena in copper concentrate is too high. Its use along with sulfur dioxide in Brunswick Mines has ...
Role of dextrin in the selective flotation of fluorite
Interaction of dextrin on calcium minerals both in the presence and absence of oleate was studied in the present investigation. The mechanism of dextrin adsorption at mineral / water interface …
Exploring Dextrin as an Eco-Friendly Depressant for Selective Flotation …
Micro-flotation experiments indicated that dextrin selectively depressed calcite at natural pH yet scheelite remained floatable using sodium oleate (NaOL) as a collector. Adsorption density and zeta potential results indicated that dextrin was preferentially adsorbed on the calcite surface and prevented the subsequent NaOL from adsorption.
Dextrin as a non-toxic depressant for pyrite in flotation …
The results of single mineral flotation tests showed that konjac glucomannan had a stronger depression effect on pyrite than traditional organic depressants (Starch, Dextrin, Guar gum) with the ...
Effect of dextrin on flotation separation and surface …
The flotation separation and mechanism of dextrin on chalcopyrite and arsenopyrite surface were investigated using micro-flotation tests, zeta potential …
Influence of physical and chemical parameters on ultrafine …
Flotation of fluorite ores typically used tannings to depress calcite and ferrous minerals, starch and/or dextrin to depress quartz and a fatty acid collector [8, [16], [17], [18]]. …
The effect of dextrin on surface properties and the flotation …
A series of experiments was also undertaken to determine the effect of dextrin on the oil flotation recovery of molybdenite in the absence of any collector. As can be seen from the results presented in Fig. 7, in the acidic region the extraction into the oil phase decreases with increasing amounts of dextrin. However, in the alkaline region ...
Comparison Between Performance of Fluorite Flotation …
a fluorite flotation system and found that combination of tannin and dextrin improved the recovery of fluorite by 19.23%, the removal rate of CaCO3 by 13.43%, and SiO2 by 8.93%. …
【Fluorite Flotation Process】How to Separate Fluorite from …
This article will delve into the flotation process of various types of fluorspar ores, including key links such as reagent selection, slurry adjustment, grinding process, and silicon reduction in ...
Fluorspar Beneficiation Process Plant
Source: This article is a reproduction of an excerpt of "In the Public Domain" documents held in 911Metallurgy Corp's private library. Flotation of a Fluorspar Ore from Illinois. This report is the fourth in a Bureau of Mines series describing the sodium fluoride-lignin sulfonate-fatty acid process of froth flotation separation of fluorspar from complex ores …
Effect of dextrin on flotation separation and surface …
The micro-flotation test showed that dextrin had obvious inhibitory effect on arsenopyrite flotation, but had no inhibitory effect on chalcopyrite flotation. After treating the surface of arsenopyrite with dextrin, the infrared spectra showed that new characteristic peaks, indicating that chemical adsorption and significant interaction between ...
Effect of Dextrin on the Adsorption Behavior and Surface
It can be known that dextrin could enhance the hydrophilicity of sub-bituminous coal as a depressant in coal reverse flotation. However, dextrin weakens the surface hydrophilicity …
Exploring Dextrin as an Eco-Friendly Depressant for Selective Flotation …
In this paper, the effects of caustic cassava starch (CS) on the single mineral flotation performance of fluorite and dolomite and the flotation separation of mixed ore were studied. Its selective ...
Comparison Between Performance of Fluorite Flotation …
The authors conclude that two-stage flotation using dextrin to remove SiO 2 and tannin to remove CaCO 3 improves the fluorite flotation process. The results obtained in this …