Role of non-ferrous coal minerals and by-product metallic wastes in coal liquefaction. Technical progress report, September 1-November 30, 1979

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This report describes work done in the first quarter of a study of the role of coal minerals and by-product metallic wastes in coal liquefaction. Samples of Elkhorn No. 3 coal, SRC-II Fuel Oil Blend, Robena pyrite and magnetite, and various other minerals were acquired. SRC-II Fuel Oil Blend was distilled to obtain the 550/sup 0/F+ fraction which will be used for coal liquefaction runs. The thermal stability of pyrite and other minerals was evaluated by thermal gravimetric analysis (TGA) in the presence of helium and hydrogen gases. Magnetite and zinc flue dusts (high and low zinc content) were found ... continued below

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Pages: 70

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Garg, D; Givens, E N; Clinton, J H; Tarrer, A R; Guin, J A; Curtis, C W et al. December 1, 1979.

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This report describes work done in the first quarter of a study of the role of coal minerals and by-product metallic wastes in coal liquefaction. Samples of Elkhorn No. 3 coal, SRC-II Fuel Oil Blend, Robena pyrite and magnetite, and various other minerals were acquired. SRC-II Fuel Oil Blend was distilled to obtain the 550/sup 0/F+ fraction which will be used for coal liquefaction runs. The thermal stability of pyrite and other minerals was evaluated by thermal gravimetric analysis (TGA) in the presence of helium and hydrogen gases. Magnetite and zinc flue dusts (high and low zinc content) were found to be thermally stable in the inert atmosphere. Stoichiometric reduction of magnetite with hydrogen was obtained. Zinc flue dusts lost a maximum of 20% weight in the presence of hydrogen. Fly ash samples lost a maximum of 8% weight in the presence of helium and hydrogen gases. Stoichiometric reduction of Robena pyrite was observed both in helium and hydrogen gases. A pressurized thermal gravimetric reactor (PTGR) was used to determine the reactivity of the different minerals. The reduction of pyrite in the PTGR increased linearly with temperature, but the influence of hydrogen pressure was insignificant. The pyrolysis of pyrite was found to be an endothermic process, whereas oxidation of pyrite was exothermic. In batch autoclave tests, the Elkhorn No. 3 coal with 13.35% ash had 87% coal dissolution at 410/sup 0/C and 1250 psig hydrogen pressure (at 25/sup 0/C). Pyrite and several other minerals showed little improvement in naphthalene hydrogenation activity, whereas treated pyrite and pyrrhotite significantly improved this hydrogenation activity.

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Pages: 70

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NTIS, PC A04/MF A01.

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  • Report No.: DOE/ET/14806-T2
  • Grant Number: AC22-79ET14806
  • DOI: 10.2172/6387505 | External Link
  • Office of Scientific & Technical Information Report Number: 6387505
  • Archival Resource Key: ark:/67531/metadc1207348

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  • December 1, 1979

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Oct. 19, 2018, 1:14 p.m.

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Garg, D; Givens, E N; Clinton, J H; Tarrer, A R; Guin, J A; Curtis, C W et al. Role of non-ferrous coal minerals and by-product metallic wastes in coal liquefaction. Technical progress report, September 1-November 30, 1979, report, December 1, 1979; United States. (digital.library.unt.edu/ark:/67531/metadc1207348/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.