SF series flotation machine is the improved product of A-type.It can self-absorb mineral pulp and self-absorb air, its operating room is allocated horizontally. Compared toA-type, it has larger air-absorption capacity, lower power consumption, longer service life of impeller and cover, without need any supplementary equipment, better dressing efficiency.
SF series flotation machine is not only applied to separating the non-ferrous metal, ferrous metals, precious metals, and chemical raw materials, recycling useful minerals, but also applied to selecting the non-metallic minerals such as the coal, fluorite, talc and so on.
SF series flotation machine drives the impeller rotate by the V-belt transmission of the motor, and produces the centrifugation effects to form the negative pressure. This flotation machine can inhale adequate air that to be mixed with the slurry. On the other hand, the mixing pulp is intermixed with the drugs. At the same time, refine the bubble, and make the minerals conglutinate on the bubble, and then float on the surface of the ore pulp, to form the mineralized bubble. Adjust the height of the flashboard, control the liquid level, and make the useful bubble scrapped by the scraper blade.
Shaking Table, Spiral Concentrator, Centrifugal Gold Concentrator manufacturer / supplier in China, offering Gold Trommel Wash Plant in Ghana, Vibrating Table for Gold in Mining Field, 50tph Complete Turnkey Rock Gold Ore Gravity Mining Processing Plant and so on.
It is well known that surface roughness of mineral particles has a significant influence on their flotation behaviors. In this investigation, magnetite was ground in rod and ball mills to generate particles with similar dimension and shape but varying degree of surface roughness, which was quantified using Atomic Force Microscopy (AFM). The influence of surface roughness on the floatability of magnetite particles was performed by flotation tests using an XFG flotation machine. Flotation tests indicated magnetite particles possessed higher surface roughness had higher flotation recovery and larger flotation rate constant. The aggregation behaviors of different rough magnetite particles were compared for the first time via an optical microscopy. Results of the optical microscopic tests revealed that there were a large number of aggregations in the system of particles with higher surface roughness. A proposed model was deduced with the parameters carefully calculated (not arbitrarily selected) to analyze the bubble-particle interaction energy using an Extended DVLO (DerjaguinLandauVerweyOverbeek) theory. The theoretical interaction energy points to lowering energy barrier when magnetite particles are covered with 28.03nm asperities as compared to 9.47nm asperities. The effect of surface roughness on mineral flotation was investigated from the view of both particle aggregations and energy barrier of bubble-particle attachment for the first time, which are the primary causes for differences in flotation performance.
Employing frequency conversion technology, continuously viable of vane wheel, digital display and accurate adjustment, the hanging flotation machine of XFG series is applicable to stirring, scrubbing, separation and selection of small amounts of sample ore in labs of research institutes and mining bodies involving geology, metallurgy, building materials and chemical industry.
The floatation machine has the advantages of large air-absorption capacity and low energy consumption. Every cell owns three functions: air absorption, slurry absorption, and floatation separation, and the cells form a floatation separation loop by itself without any auxiliary equipment, and is allocated horizontally, which favors the change of flow. The circulation of mineral slurry is reasonable, and can avoid the disposition of coarse sand to the largest extent. There is self-control device on the surface of mineral slurry, so it is easy to adjust it. The impeller has backward-inclined upper and lower vanes, which produce upper and lower circulation of mineral slurry respectively.
Items Unit Model XFG5-35 XFG50-100 Cellcapacity g 5,15,25,35 50,100 Cellvolume ml 20,60,100,140 200,400 Impellerdia. mm 20,26 26,30 36,48 Impellerspeed rpm 1000-1850 Feedingsize mm 0.05-0.2 Motormodel YTC-180-4/125 YTC-180-4/125 Motorpower W 180 180 Dimension mm 450*300*700 450*300*700
The floatability of bismuthinite decreases with increasing pH.Pyrogallol exhibits excellent depression effect on bismuthinite flotation.Bi sites in bismuthinite surface account for pyrogallic acid adsorption.Pyrogallol chemisorbs on bismuthinite surface via the formation of BiOC bonds.
Pyrogallol, an eco-friendly derivative of tannic, was a potential substitute of toxic depressant used in bismuth-molybdenum (BiMo) sulfide ore flotation. However, unclear depression mechanisms of pyrogallol on bismuth sulfides hindered its further application in the industry. In this work, the effect of pyrogallol on the flotation performance of bismuthinite was evaluated using flotation tests, and associated interaction mechanisms were investigated by using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT) calculations. Micro-flotation tests showed that pyrogallol exhibited excellent depressing performance to bismuthinite in the whole pH range tested (212). In the presence of 300g/t pyrogallol, over 95% of bismuthinite was effectively depressed in the real flotation process at pH around 9. FTIR and XPS results demonstrated that pyrogallol was chemisorbed on bismuthinite through the interactions among Bi atoms exposed on the bismuthinite surface and OH groups in pyrogallol. The adsorption mechanism was further ascertained by DFT calculations, which revealed that the BiOC single bond and the five-membered ring complex models were involved in the chemisorption of pyrogallol on bismuthinite surface. The work presented here not only provides new insights into the inhibition mechanisms of pyrogallol on bismuthinite but also provides theoretical support for the industrial application of pyrogallol.
Magnesite particles having nano-scaled surface roughness were produced in disk and ball mills.Both flotation recovery and kinetics were affected by size of surface nano-asperities.The effect of surface roughness on flotation is diminished with increasing collector dosage.A simple theoretical model shows that surface roughness benefits bubble-particle attachment.
Roughness of mineral particles affects bubble-particle interactions and particle flotation separation. In this study, magnesite was ground in stainless-steel disc and ceramic ball mills to produce flotation feed material of different surface nano-roughness, which was quantified using atomic force microscopy (AFM). The effect of surface roughness on the floatability of magnesite particles was carried out by a micro-flotation kinetic test using an XFG flotation machine. The flotation results demonstrated both higher flotation recovery and larger flotation rate constant for particles having larger nano-asperities of rough particle surface. Additionally, the difference in cumulative flotation recovery between magnesite particles with different nano-roughness characteristics systematically decreased with increasing collector (sodium oleate) concentration from 25 to 150mg/L. Contrarily, a difference in the value of flotation kinetics constant for particles with larger and smaller asperities remained at a level of 0.20.3min1 for the entire range of collector concentration. The interaction energy between bubbles and rough magnesite particles with different nano-roughness was estimated using an extended DLVO (DerjaguinLandauVerweyOverbeek) theory. The theoretical interaction energy points to lowering energy barrier when the magnesite particles are covered with 12nm asperities as compared to 2nm asperities. It is therefore hypothesized that the energy barrier is a primary cause for differences in flotation performance of particles decorated with nano-asperities of different dimensions.