Control of pyrite surface chemistry in physical coal cleaning

Control of pyrite surface chemistry in physical coal cleaning [electronic resource]

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Several pyrite depressants have been evaluated for their effectiveness in depressing coal pyrite. A novel reagent, NVT, has been synthesized and shown to be selective for the separation of coal from coal pyrite by froth flotation. This organic reagent contains no sulfur group in its structure and ex...

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Bibliographic Details
Online Access: Online Access
Corporate Authors: Virginia Polytechnic Institute and State University. Department of Mining and Minerals Engineering (Researcher), National Energy Technology Laboratory (U.S.) (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Morgantown, W.Va. : Oak Ridge, Tenn. : National Energy Technology Laboratory (U.S.) ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1990.
Subjects:
Sulfides.
Organic Compounds.
Document Types.
Cleaning.
Separation Processes.
Transition Element Compounds.
Sodium Compounds.
Sulfur Compounds.
Flotation.
Pyrite.
Fuels.
Minerals.
Sulfide Minerals.
Energy Sources.
Surface Properties.
Coal.
Materials.
Progress Report.
Iron Compounds.
Ph Value.
Iron Sulfides.
Carbonaceous Materials.
Additives.
Fossil Fuels.
Alkali Metal Compounds.
Sodium Sulfides.
Chalcogenides.
Coal, Lignite, And Peat.
Description
Summary:Several pyrite depressants have been evaluated for their effectiveness in depressing coal pyrite. A novel reagent, NVT, has been synthesized and shown to be selective for the separation of coal from coal pyrite by froth flotation. This organic reagent contains no sulfur group in its structure and exhibits a stronger affinity toward pyrite than toward coal. The effects of a number of parameters such as pH, reagent concentration and flotation time on flotation response were investigated in a microflotation cell and a bench-scale Denver flotation cell. The reagent has demonstrated good performance at relatively low concentrations when compared to the commercially available sulfur-based pyrite depressants. 8 figs.
Item Description:Published through the Information Bridge: DOE Scientific and Technical Information.
01/01/1990.
"doe/pc/89789-t1"
"DE91005552"
Yoon, R.H.; Luttrell, G.H.; Zachwieja, J.B.; Lagno, M.L.
DOE/FE.
Physical Description:Pages: (16 p) : digital, PDF file.

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