Froth flotation of fluorite: A review
The structure of dextrin is similar to that of amylopectin, as shown in Fig. 11, with molecular weights ranging from 800 to 70,000 [85]. Caustic, cationic, and anionic starches are also the products of starch modifications [130]. During starch digestion, the aldehyde groups at the molecular ends of the starch are gradually destroyed to generate ...
Dextrin as a non-toxic depressant for pyrite in flotation with
Depression of pyrite flotation by dextrin has been investigated through adsorption, electrokinetic and microflotation studies in systems open to the atmosphere. Adsorption of dextrin takes place through specific interaction with ferric oxyhydroxide species that result from the oxidation of pyrite surface. Dextrin shows an isoelectric point …
Influence of dextrin on beneficiation of components from …
Natural depressants, especially starch and its derivatives, are one of the most significant polysaccharides used in polymetallic sulphide ores flotation. In the paper influence of dextrin on flotation of copper, organic carbon and mineral components from rougher concentrate was investigated. It has been shown, that dextrin is a good …
Flotation System For Fluorspar Nawa Jaw Crushers
The preparation method of fluorite flotation agent. A process for the preparation of fluorspar flotation method, the crude intermediate product produced with oleic fatty acids or mixed fatty acids as raw materials, added thereto weight of the fatty acids of 3% to 15% by weight of concentrated sulfuric acid, so that the occurrence of,
Effect of Modified Dextrins on the Depression of Talc and …
A different order of effectiveness was observed for talc depression in the mixed mineral system (CM Dextrin ≥ MP Dextrin > Dextrin TYM). Competition between the valuable and gangue mineral phases for the uptake of MP Dextrin is responsible for its observed decrease in efficiency in mixed mineral flotation.
Dextrin vs. Maltodextrin: What's the Difference?
Key Differences. Dextrin and maltodextrin, although chemically related, serve different purposes in various applications. Dextrin can be used in adhesives and glues, while maltodextrin often finds its way into food as a thickener or filler, illustrating their versatile usage in various industries. Both carbohydrates, their functions oscillate ...
The effect of dextrin on surface properties and the flotation …
As can be seen from Table II, dextrin decreases the flotation recovery of TABLE II Hallimond tube flotation recovery of molybdenite as a function of the concentration of dextrin at pH 3.8 in 2 10-3 M KCI Amount of dextrin (rag/l) Recovery (%) 0 92 0.2 18 0.83 9 1.67 8 8.3 2 16.7 1.6 50 1.6 100 1.5 26 molyhdenite quite markedly. In …
Optimal Depressants and Collector Dosage in Fluorite Flotation …
Alternative processes have been proposed for selective separation of fluorite and gangue minerals (carbonates and silicates) present in fluorspar ores. Calcination and gravity separation processes are methods that have low efficiency and high cost. Flotation is a chemical process that becomes important when high ore grades are required; however, …
The selective depression effect of dextrin on pyrite during …
Fig. 3 exhibits the effects of dextrin concentration on the flotation recovery of pyrite and sphalerite in the presence of NaBX as function of pH. As shown in Fig. 3 (a) the recovery of pyrite was found to decrease with the increase of the dextrin concentration at pH= 7, 9, and 10.5. The higher the alkalinity, the more obvious the inhibition effect, and …
Dextrin as a Regulator for the Selective Flotation of Chalcopyrite
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 …
Dextrin as a non-toxic depressant for pyrite in flotation with
Electrokinetic studies have been undertaken to delineate the adsorption mechanism of dextrin onto pyrite. Fig. 2 shows the zeta potential of pyrite as a function of pH in the absence and presence of various dextrin concentrations. This figure also shows the zeta potential of dextrin both from this study and after Liu (1988).As noted, dextrin …
Optimization of High-grade Fluorspar Recovery from Rare
Fluorite (calcium fluoride—CaF2), also known as fluorspar, is an industrial mineral used in metallurgy, hydrofluoric acid production, and ceramics manufacturing. Based on the results from a previous study, a low-grade fluorspar by-product (20.0% CaF2) originating from the exploitation of a rare earth carbonatite deposit can be …
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 ...
Clean and Feasible Utilization of High Silica Fluorspar …
dextrin [23,24]. Additionally, Gao et al. and Gan et al. reported that CA exerts sufficient depressive effects on the oleate flotation of fluorite because of its robust chelating …
The Potential of Modified Starches as Mineral …
Dextrin with a peak hydrodynamic radius of 2.5 nm compared to 6.5 nm for Ox 5/120 yields greater graphite recovery than Ox 5/120 for all dosages. The degree of …
Fluorspar Beneficiation by Packed Column Flotation
Fluorspar Beneficiation by Packed Column Flotation. Acid-grade fluorspar is utilized in the production of hydrofluoric acid from which a variety of organic and inorganic fluoride chemicals are made, including synthetic cryolite and elemental fluorine. The manufacture of chlorofluorocarbons (CFCs) is the volume leader in the …
Adsorption, electrokinetic and differential flotation studies …
The effect of dextrin concentration on the flotation recovery of sphalerite and galena are portrayed in Fig. 11. It is evident from the figure that the flotation recovery of sphalerite remains unaltered at about 97% on addition of different concentrations of dextrin in the range of 0.2–100 ppm at pH 12.1. On the other hand, the flotation ...
Study on synergistic inhibition and mechanism of …
Article. Open access. Published: 03 January 2024. Study on synergistic inhibition and mechanism of flotation separation of fluorite and calcite by tannin and …
The selective depression effect of dextrin on pyrite during …
Single-mineral flotation test results indicated that dextrin and starch have comparable depression effect, while dextrin exhibits better selectivity towards specularite than starch. Chlorite's high floatability can be maintained under the same experimental conditions by adding 9 mg/L SHA and there is an effective separation achieved.
floatation process in the processing of fluorspar
chinese floatation plant for fluorspar projectasobeBy M Michael Miller USGS Mineral Resources. find qualified Chinese gold copper iron Floatation Processing Benificiation Plant Ball Mill Spiral Classifier Flotation Machine Fluorspar mining equipment crusher machine crusing plant caustic dextrin or dextrin fluorspar fluorspar floatation process A …
Combined inhibitory effect of calcium hypochlorite and dextrin …
The effect of calcium hypochlorite, dextrin and a combination of these reagents on the adsorption behavior of DDTC was investigated corresponding to flotation experiments. Fig. 4 (a) illustrates the adsorption density of DDTC on the surface of pyrite and galena treated by the different Ca(ClO) 2 dosages.
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 ...
Pyrite depression by dextrin in flotation with xanthates.
Single mineral flotation study was conducted on 5g of -75 + 38 µm fraction of pyrite and arsenopyrite at a pulp solid concentration of 2 wt.% using IMN flotation cell (see supplementary documents ...
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, …
(PDF) Pyrite depression by dextrin in flotation with …
Hence, to prevent pyrite flotation with dextrin in the presence of xanthates a condition needed is to have a high amount of ferric hydroxide on the pyrite surface to enhance dextrin adsorption. Figure 14 shows the floatability of pyrite oxidized for 30 min and 24 hs as a function of dextrin concentration using 1x10-3 mol/dm3 of ethyl and propyl ...
flourspar flotation reagent suppliers
Maximise the yield in your flotation processes. Visit. Suite 12, 16-18 Malvern Avenue, Chatswood NSW Australia 2057. Call. Mike Thurn +61 (0)407 628 889.
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 ...
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froth floatation for caf2. TECHNICAL NOTES 9 FLOTATION Mineral Tech. froth layer Particles that are retained in the froth are recovered at the lip of the froth weir at the edge of
iron ore concentrator 2nd scavenger flotation
caustic dextrin or dextrin fluorspar flotation. Batch flotation tests were also carried out on a chalcopyrite ore and a chalcopyritegalena scavenger concentrate using dextrin Dextrin adsorption isotherms on two types of surfaces of pyrite show...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, …
Optimization of High-grade Fluorspar Recovery from …
Optimal fluorspar flotation was achieved under the following conditions: 3.6 g/kg of sodium oleate as the collector, 2 g/kg of sodium silicate as the pH modifier and …