Combined method for simultaneously dewatering and reconstituting

Fuel and related compositions – Consolidated solids – Containing specified binder

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44569, 44572, 44594, 44626, C10L 516

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active

049699288

ABSTRACT:
A finely-divided carbonaceous material is dewatered and reconstituted in a combined process by adding a binding agent directly into slurry of finely divided material and dewatering the material to form a cake or consolidated piece which can be hardened by drying at ambient or elevated temperatures. Alternatively, the binder often in the form of a crusting agent is sprayed onto the surface of a moist cake prior to curing.

REFERENCES:
patent: 3807557 (1974-04-01), Miller
patent: 4294584 (1981-10-01), Verschuur
patent: 4355999 (1982-10-01), Masologites
patent: 4412840 (1983-11-01), Goksel
patent: 4501593 (1985-02-01), Paersch et al.
patent: 4615712 (1986-10-01), Wen
V. P. Mehrotra et al., "Review of Oil Agglomeration Techniques for Processing of Fine Coals", Internat'l Journal of Mineral Processing, 11(1983), pp. 175-201.
Frank W. Theodore, "Oil Agglomeration for Fine Coal Recovery as Commercialized at Conoco/Consol", 4th Internat'l.
Symposium on Agglomeration, Jun. 2-5, 1985.
Wasson, "Coal Dust Reduction--An Evaluation of Chemical Additives and Application Methods", Proceedings of the Inst. for Briquetting and Agglomeration, vol. 20, Sep. 1987.
Wen et al., "In Situ Cake Hardening Process for Simultaneous Dewatering and Reconstitution of Fine Coal", Electric Power Research Institute, Jan. 1989.
Wen & Deurbrouck, "A New Strategy for Fine Coal Dewatering and reconstitution", International Filtration Conference on Filtration and Separation, Mar. 21-24, 1988.

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