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Articleosti7153969 title recovery of elemental sulphur from products containing contaminated elemental sulphur by froth flotation author adamache i i abstractnote this patent describes a process for the recovery by froth flotation of elemental sulphur from contaminated products resulting from exploitation processes using wells for the application of heat to reservoirs in.Inquiry Online
----- table of contents page part 1 - conventional coal 1 part 2 - chemical coal cleaning 77 part 3 - fluidized bed combustion 149 part 4 - magnetohydrodynamics 199 part 5 - coal-oil mixtures 237 part 6 - cocombustion with municipal solid waste 263 part 7 - in situ gasification 371 appendix a - conventional coal 401 appendix b - chemical coal cleaning 439 appendix c - fluidized bed combustion.
The process of claim 1 wherein said aqueous slurry of fine coal is the product of a flotation processThe process of claim 1 wherein said aqueous slurry of fine coal has a water content of from 65 to 75 percent by weightThe process of claim 1 wherein said separating comprises a filtering process.
articleosti5646576 title process for beneficating oil shale using froth flotation author datta r and salotti c a abstractnote this patent describes a process for beneficiating oil shale which has been reduced to a size suitable for grindingIt comprises: grinding the shale in an aqueous medium under conditions and using a suitable dispersant to a mixture of particles.
articleosti6934365 title process for coal flotation using 4-methyl cyclohexane methanol frothers author christie r d and gross a e and fortin r j abstractnote this patent describes an improvement in a froth flotation process wherein solid coal particles are selectively separated under coal froth flotation conditions as a froth phase from remaining solid feed particles as an.
articleosti7153969 title recovery of elemental sulphur from products containing contaminated elemental sulphur by froth flotation author adamache i i abstractnote this patent describes a process for the recovery by froth flotation of elemental sulphur from contaminated products resulting from exploitation processes using wells for the application of heat to reservoirs in.
Most coal requires some preparation before usePreparation may range from simply crushing to provide a size consist suitable for certain types of boilers to extensive size reduction and cleaning to remove sulfur and ash-forming mineral matter.
Bioleaching is an environment-friendly and low-investment process for the extraction of metals from flotation concentrateSurfactants such as collectors and frothers are widely used in the flotation processThese chemical reagents may have inhibitory effects on the activity of microorganisms through a bioleaching process; however there is no report indicating influences of reagents on the.
Coal gasification and its applicationsDownload with google download with facebookCreate a free account to download37 full pdfs related to this paperCoal gasification and its applications.
Flotation machine n2 h2o h2o flue gas n2 gypsum pumpA chemical absorption test facility using mdea methyl di-ethanol amine was added for co2 captureResults of solvent extraction process: hydrogen offers 2.
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Dawson flotation process used for calcium carbonate recovery from water treatment sludgesAnn arbor science mi 1979 pp.
Handbook of separation process technology edited byDownload with google download with facebookCreate a free account to download.
A two-stage process for removal of pyrite from coal comprising the steps of 1 forming an aqueous pulp of the coal in a finely divided state and frothing the pulp to collect the coal in the froth and leave a residual pulp containing course pyrite and 2 removing and repulping the froth product from step 1 conditioning the pulp with a coal flotation depressant and a pyrite.
A method of increasing the yield of deep mined coal undergoing a concentration treatment of froth flotation by using as a flotation promoter an invertible water-in-oil emulsion of sodium polyacrylate latex in a dosage calculated as 05 lb of dry sodium polyacrylate per ton of dry coal and recovering a concentrate of said coal in said froth.
In the patent us-a-4324653 described processing method by direct flotation of phosphate minerals containing siliconcarbon as impurities and the process includes the steps: a full flotation of the mineral using the m manifold mainly containing ester of phosphoric acid in amounts and under conditions that allow the accumulation of silicate.
Flotation tests were conducted using a denver d-12 flotation machine figure 5 equipped with a 2-liter tank and a 3Feed slurry of 30 solids by weight was used in all experiments.
Jan 10 2015 again during the same process when coal depressant dextrin 05 kgt was used the ash content of ls-26 coal was reduced from 345 at a clean coal yield of 55Thus they were able to show that flotation of gangue minerals is very much improved by maintaining zero conditioning time in a coal reverse flotation process.
Jan 26 2014 flotation is a process for separating finely ground minerals such as coal particles from their associate waste or gangue by means of the affinity of surfaces of these particles for air bubbles which is a method for concentrating coal particlesThe filed us patent document is found here: process for coal flotation using 4-methyl cyclohexane.
9 but the hydrogen content was lower: 3The carbon content decreased in the samples of magnetic sorbents after the.
Nov 12 2009 process flow sheet for pre-treatment of high ash coal to produce clean coal - a process for treating coal to obtain lower ash content coal including: i pretreating high ash coal in a pretreatment unit with ultrasonic waves or microwaves ii forming a slurry of coal fines in a solvent solution including n-methyl-2-pyrrolidone nmp and one.
Patent us4915825 - process for coal flotation using 4-methylAn improved froth flotation process wherein solid coal particles are selectively separated under coal froth flotation conditions as a froth phase.
Process for coal flotation using 4Articleosti6934365 title process for coal flotation using 4-methyl cyclohexane methanol frothers author christie rd and gross ae and fortin rj abstractnote this patent describes an improvement in a froth flotation process wherein solid coal pa.
Prophetic example 4—comminuting coal with bio-diesel rapeseed oil methyl ester the process of prophetic example 3 is repeated using a methyl ester bio-diesel prepared from rapeseed oilProphetic example 5—comminuting coal with low rapeseed oil concentrationTo demonstrate the simultaneous grinding and flocculation of coal using low oil.
The -53 mum size fraction of a bituminous coal was used to perform froth flotation experimentsThe froth flotation of the coal used was performed in the presence of two nonionic surfactants triton x-100 polyethylene glycol tert-octylphenyl ether and mibc methyl isobutyl carbinol and an anionic surfactant sds sodium dodecyl sulfate.
The aqueous treating agent obtained from the reaction of the metal salt of the thiol with cs2 is the preferred treating agent of the invention for use as a depressant composition in a flotation processGenerally the flotation process comprises carrying out a minerals flotation with a depressant composition present with the depressant.
The article describes the main issues connected with the recovery of gold and other high-valued elements from coal and coal combustion products as well as with the ash and slug reclamationThe thermodynamic modeling shows the variation of phase transformations in gold compounds depending on coal combustion temperature and on gold content of original coal.
The collector is a composition of selective weak collectors fed in the following sequence - isobutyl dithiophosphate and isopropyl-o-methyl-n-thionocarbamate and a strong collector - a butyl xanthate at the ratio of 3:45:1; at the same time tails of collective copper-zinc floatation are conditioned with blue vitriol to activate sphalerite.
The hygas pilot plant is located in chicago illinois1 process description several processing steps are required to convert coal to high-btu gas with the hygas processA key feature is the use of hydrogen and steam in hydrogasificationA diagram of the process is provided in figure 4-1Coal preparation involves crushing the coal to -8-mesh.
The method of flotation of sulphide gold ore comprising the sequential conditioning the pulp with xanthate additional collector frother and the allocation of the valuable component in the foam product characterized in that as an additional collector injected concentrate metasulfite the latter is a mixture of 37-dimethyl-5 tiannan-28-dione.
The separation effect improved after adopting classified flotation especially the combined process of the flotation machine and the flotation column recovery increased by 4.
Use as fosforiliruyusciye agent upon receipt collectors for flotation of ores mixture of phosphorus oxychloride and dichlorohydrin methylphosphonic acid in the ratio of phosphorus oxychloride: dichlorohydrin methylphosphonic acid1-n:n and eco: fosforiliruyusciye agent2-n:1 where n04 is the difference from the prototype and.
Use of ionic liquids as potential solvents for coal extraction especially of lignites has also been discussedPhysical and chemical pretreatments greatly enhance the coal solvent extraction yield.
show full abstract various flotation parameters including reagents dosage impeller speed pulp ph and grinding time of the test sample using aerofroth 73 af 73 pine oil methyl isobutyl.
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