Process for agglomerating ore concentrate utilizing clay and dispersions of polymer binders or dry polymer binders

Patent 4767449 Issued on August 30, 1988. Estimated Expiration Date:

June 19, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3307927

3418237

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3644113

3765869

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3898076

Method of treating waste produced during stainless steel making
Patent #: 4004918
Issued on: 01/25/1977
Inventor: Fukuoka , et al.

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Inventors

Application

No. 07/063990 filed on 06/19/1987

US Classes:

75/321, And synthetic polymer, natural polymer, or carbohydrate75/767, With synthetic polymer, natural polymer, or carbohydrate75/772With synthetic polymer, natural polymer, or carbohydrate

Examiners

Primary: Rosenberg, Peter D.

Attorney, Agent or Firm

Gibson; Henry H.

International Classes

C22B 1/14 (20060101)
C22B 1/24 (20060101)
C22B 1/244 (20060101)

Abstract

This invention is a method for agglomerating mineral ore concentrate comprising the commingling of mineral ore concentrate with a binding amount of water soluble polymers, preferably poly(acrylamides), and clay, preferably bentonite. The polymer is applied to the mineral ore concentrate either (1) as a dispersion in a non-aqueous dispersion medium or (2) as a dry powder. This invention is also a method of agglomerating mineral ore concentrate with flux material.

Other References

Kramer, 29th An. Min. Symp. (1968) 145:51
Armstrong, Aus. I.M.M. Conf. (1973) 543:6
Dokuchayev, et al., "Utilization of Surface-Active Agents in Pelletization of Iron Ore Concentrates", Metallurgy and Mining Institute, Bulletin of Scientific and Technical Information, Production of Sbornik, No. 3, pp. 5-8 (1972) (English translation)
Bereschnoy et al., Pelletizing Fine Grained Iron Ore Concentrates, Moscow, Nedra Publishers (1971)
Pozihidayeva et al., "Selection of a Binder Additive for the Manufacture of Pellets", Izvestiya VUZ-ov. Ferrous Metallurgy No. 2, pp. 13-15 (1984); (English translation)