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A novel coal tar-based collector for effective flotation
How to use coal tar as flotation collector for fine coal need detailed discussion. In addition, the mechanism of the interaction between coal tar and coal surface needs in-depth analysis. This stone is aimed at solving the problem of difficult-float low-rank coal flotation by novel high-efficiency collector, increasing the production efficiency of coal preparation plant, and reducing the
Coal BASF
BASF’s diverse flotation range includes collectors, frothers, dispersants, and modifiers and is backed by a strong production platform of aliphatic alcohols, glycols and surfactants which makes BASF a natural partner for the coal industry. The coal industry is driven by the need to
Effect of Collector Interfacial Tension on Coal Flotation
24.03.2010· The size assay of the flotation concentrates indicated that the flotation recovery of medium-to-coarse coal particles (38−600 μm) increased as the collector interfacial tension decreased. However, there may be an optimal value of collector interfacial tension, corresponding to the maximum flotation recovery for ultrafine coals of −38 μm.
Performance of used lubricating oil as flotation collector
01.03.2019· Conventional oily collectors, such as diesel oil (DO), kerosene, and fuel oil, are widely used as flotation collectors to improve the flotability of coal. However, for low-rank coal, traditional collectors cannot be effectively adsorbed on its surface because of the existence of hydrophilic oxygenated functional groups,,,,.
(PDF) Comparison of non-ionic and ionic collectors in the
01.04.2003· Flotation results showed that conventional collectors could not reduce the ash content of concentrate below 21.0% whereas, ionic collectors were found significantly better at reducing the ash...
Carrier Flotation of Low-Rank Coal with Polystyrene
However, low-rank coals are very difficult to float with ordinary collectors (diesel oil, kerosene, etc.) due to abundant oxygenated functional groups on their surfaces, such as hydroxyl and carboxyl groups, which hinder the adsorption between low-rank coal particles and collectors [ 4, 5 ].
COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL
COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL Raghav M. Dube University of Kentucky, [email protected] Right click to open a feedback form in a new tab to let us know how this document benefits you. Recommended Citation Dube, Raghav M., "COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL" (2012). Theses and
COAL FLOTATION Mineral Processing & Metallurgy
Metallurgical ContentCoal Flotation with Non-Ionic SurfactantsExperimental Materials and MethodsResults and DiscussionSummary and Conclusions The flowsheet in this study illustrates the general practice in the United Kingdom. A large number of coal preparation plants have been established by the National Coal Board during the past 10 years. The primary consideration is to achieve a
A novel coal tar-based collector for effective flotation
16.08.2020· The coal flotation efficiency index of the CTB collector was 130∼240 higher than that of the diesel. The particle carried index was designed to evaluate the carrying ability of a single bubble
Optimization of collector and its action mechanism in
01.03.2019· Emulsified collectors can increase the flotation recovery and the flotation rate, reduce collector consumption, and improve the flotation selectivity of fine coal. Diesel and kerosene are commonly used collectors for coal flotation. However, the poor solubility and dispersibility in water makes their efficiency very low. Emulsification is a key solution to solve this problem
Effect of Collector Interfacial Tension on Coal Flotation
24.03.2010· Collectors are important for the effective operation of flotation process. In this work, a new collector was evaluated and compared with diesel oil to investigate its effect on coal flotation. The kinetics of collector spreading on hydrophobic and hydrophilic coal surfaces was studied by measuring the contact angle at coal−oil−water three-phase contact line versus time for the new
(PDF) Comparison of non-ionic and ionic collectors in
Flotation reagents in particular the flotation collector plays a significant role in the cleaning efficiency of coal slimes in the coal preparation and utilization industry. A new collector (NC
Carrier Flotation of Low-Rank Coal with Polystyrene
Froth flotation is an efficient method for the upgrading of fine coals of less than 0.5 mm [1,2,3].However, low-rank coals are very difficult to float with ordinary collectors (diesel oil, kerosene, etc.) due to abundant oxygenated functional groups on their surfaces, such as hydroxyl and carboxyl groups, which hinder the adsorption between low-rank coal particles and collectors [4,5].
Effect of microemulsified collector on froth flotation of
14.10.2020· Flotation recovery of fine oxidized coal is frequently inefficient when using conventional oily collectors. A large amount of fine coal is discharged as tailings, leading to resource waste and
Performance of Vegetable Oils as Flotation Collectors
Performance of Vegetable Oils as Flotation Collectors for the Recovery of Coal from Coal Fines Wastes. M. I. ALONSO Instituto National del Carbon, CSIC,La Corredoria s/n, Apdo. 73, Oviedo, 33080, Spain,C. CASTANO Instituto National del Carbon, CSIC,La Corredoria s/n, Apdo. 73, Oviedo, 33080, Spain & A. B. GARCIA Instituto National del Carbon, CSIC,La Corredoria s/n, Apdo. 73, Oviedo
COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL
COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL Raghav M. Dube University of Kentucky, [email protected] Right click to open a feedback form in a new tab to let us know how this document benefits you. Recommended Citation Dube, Raghav M., "COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL" (2012). Theses and
Coal Flotation with Nonionic Surfactants: Coal
The flotation response of two high-sulfur coals to a variety of collectors was studied in detail using a 2-liter Denver flotation cell. In comparison with dodecane as the standard oily collector, the introduction of a benzene ring into the oily collector can significantly improve its collecting ability for coal. In our two series of compounds containing oxygenated functional groups, it was
A novel coal tar-based collector for effective flotation
16.08.2020· The coal flotation efficiency index of the CTB collector was 130∼240 higher than that of the diesel. The particle carried index was designed to evaluate the carrying ability of a single bubble
(PDF) An investigation of coal flotation using
Flotation behavior of different size fractions of fresh and oxidized coals at different collector dosages were investigated in an experimental flotation cell. Flotation results showed that
Coal Flotation with Nonionic Surfactants: Coal
The flotation response of two high-sulfur coals to a variety of collectors was studied in detail using a 2-liter Denver flotation cell. In comparison with dodecane as the standard oily collector, the introduction of a benzene ring into the oily collector can significantly improve its collecting ability for coal. In our two series of compounds containing oxygenated functional groups, it was
COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL
COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL Raghav M. Dube University of Kentucky, [email protected] Right click to open a feedback form in a new tab to let us know how this document benefits you. Recommended Citation Dube, Raghav M., "COLLECTORS FOR ENABLING FLOTATION OF OXIDIZED COAL" (2012). Theses and
Reagent collector for flotation of coal
Reagent collector for flotation of coal is a non-polar reagent, obtained by extraction with dimethylformamide from srednemotornoy sour crude oils with boiling within 200-350°C, composition, Rel. %: cycloalkylcarbonyl 3,6-4,0; naphthalenes 35,0-36,0; benzothiophene 3,0-4,0, polyaromatics cyclic sulfides (sulfur in a saturated cycle 34,0-35,0; phenanthrenes 14,0-15,0; triaromatic condensed
Nanoparticle Flotation Collectors: Mechanisms Behind
02.07.2020· The flotation experiments revealed that the optimum conditions were: collector dosage 5000 g/t, pulp concentration 40 g/L, and the ratio of low-rank coal to polystyrene 100:10. Under these
Algal Lipids as Biocollector for Recovery of Coal from
Much research has focussed on suitable collectors for fine coal flotation [15,16,17,18]. Standard fuel oil or kerosene is the most commonly used coal flotation reagent. For oxidised coals, which are difficult to float while using conventional non-polar reagents, like diesel, oleic acid, and biodiesel produced from waste cooking oil, have been found to be effective
The Process Of Coal Flotation dobermannsa.co.za
Flotation in coal mining process Flotation Machine Mineral Processing,Longwall Coal . to a variety of collectors was studied in detail using a 2liter Denver flotation cell. Eriez Equipment for the Coal Industry by the process of froth flotation and specifically relates to a process for the froth flotation of coal
Chemical Reagents for Enhanced Coal Flotation: Coal
The flotation of two high-sulfur coals was studied in detail, using a series of nonionic surfactants as collectors containing oxygenated as well as aromatic functional groups. Most of the work was conducted with tetra-hydrofurfuryl esters (THF) as the coal collectors, and the performance of these reagents was compared with that of two oily collectors, namely dodecane and nonylbenzene. With
Carrier Flotation of Low-Rank Coal with Polystyrene
The flotation experiments revealed that the optimum conditions were: collector dosage 5000 g/t, pulp concentration 40 g/L, and the ratio of low-rank coal to polystyrene 100:10. Under these conditions, the combustible recovery by carrier flotation was obtained as 70.59% when the ash content was 12.32%, which increased by 25.68 points compared with the combustible recovery of conventional
CA1191285A Polymer collectors for coal flotation
Polymer collectors for coal flotation Info Publication number CA1191285A. CA1191285A CA000449436A CA449436A CA1191285A CA 1191285 A CA1191285 A CA 1191285A CA 000449436 A CA000449436 A CA 000449436A CA 449436 A CA449436 A CA 449436A CA 1191285 A CA1191285 A CA 1191285A Authority CA Canada Prior art keywords formula phenol polymer coal collector
Coal Flotation Collector Suppliers, Manufacturer
Alibaba offers 1 Coal Flotation Collector Suppliers, and Coal Flotation Collector Manufacturers, Distributors, Factories, Companies. Find high quality Coal Flotation Collector Suppliers on Alibaba.
Polymer collectors for coal flotation (Patent) OSTI.GOV
Polymer collectors for coal flotation. Full Record ; Other Related Research; Abstract. A method of increasing the yield of coal undergoing a concentration treatment of froth flotation is accomplished by using as the collector an alkyl phenol formaldehyde condensate product having 4-5 phenolic nuclei with the alkyl group of said phenol having between 4-15 carbon atoms.
Reagent collector for flotation of coal
Reagent collector for flotation of coal is a non-polar reagent, obtained by extraction with dimethylformamide from srednemotornoy sour crude oils with boiling within 200-350°C, composition, Rel. %: cycloalkylcarbonyl 3,6-4,0; naphthalenes 35,0-36,0; benzothiophene 3,0-4,0, polyaromatics cyclic sulfides (sulfur in a saturated cycle 34,0-35,0; phenanthrenes 14,0-15,0;
Collector for flotation of coal russianpatents
Collector for flotation of coal consists of a mixture of light catalytic gas oil and fractions 10+ higher aromatic hydrocarbons in the following ratio, wt. %: light catalytic gas oil 80-40; fraction 10+ higher aromatic hydrocarbons 60-20. The flow collector is 2.5 kg per ton of coal
Algal Lipids as Biocollector for Recovery of Coal from
Much research has focussed on suitable collectors for fine coal flotation [15,16,17,18]. Standard fuel oil or kerosene is the most commonly used coal flotation reagent. For oxidised coals, which are difficult to float while using conventional non-polar reagents, like diesel, oleic acid, and biodiesel produced from waste cooking oil, have been found to be effective
Chemical Reagents for Enhanced Coal Flotation: Coal
The flotation of two high-sulfur coals was studied in detail, using a series of nonionic surfactants as collectors containing oxygenated as well as aromatic functional groups. Most of the work was conducted with tetra-hydrofurfuryl esters (THF) as the coal collectors, and the performance of these reagents was compared with that of two oily collectors, namely dodecane and
Carrier Flotation of Low-Rank Coal with Polystyrene
The flotation experiments revealed that the optimum conditions were: collector dosage 5000 g/t, pulp concentration 40 g/L, and the ratio of low-rank coal to polystyrene 100:10. Under these conditions, the combustible recovery by carrier flotation was obtained as 70.59% when the ash content was 12.32%, which increased by 25.68 points compared with the combustible
Physical and stone interactions in coal flotation
Coal flotation is a complex process involving several phases (particles, oil droplets and air bubbles). These phases simultaneously interact with each other and with other species such as the molecules of a promoting reagent and dissolved ions in water. The physical and stone interactions determine the outcome of the flotation process. Physical and stone interactions between fine coal
Reverse Flotation of Taixi Oxidized Coal Energy & Fuels
X-ray photoelectron spectroscopy (XPS) was used to indicate the stone properties of Taixi oxidized coal. The results of XPS analysis showed that Taixi oxidized coal contained many oxygen functional groups. The results of our previous studies (conventional flotation tests using diesel as collector) indicated that Taixi oxidized coal was difficult to float. A concentrate yield