Process for passivating sulfidic iron-containing rock

Details Process for passivating sulfidic iron-containing rock Process for passivating sulfidic iron-containing rock

2006-03-07

2006-03-07

Wyszomierski, George (Department: 1742)

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

C075S746000, C148S273000

Reexamination Certificate

active

07008606

ABSTRACT:
A method is provided for passivating sulfidic iron-containing rock comprising contacting sulfidic iron-containing rock with one or more members of the group consisting of magnesium oxide, magnesium hydroxide, magnesium chloride, magnesium nitrate and magnesium carbonate, thereby reducing the acid generation potential of rock.

REFERENCES:
patent: 3941622 (1976-03-01), Lee et al.
patent: 4565549 (1986-01-01), Mathiesen et al.
patent: 5037479 (1991-08-01), Stanforth
patent: 5587001 (1996-12-01), De Vries
patent: 5603838 (1997-02-01), Misra et al.
patent: 6086847 (2000-07-01), Thompson
patent: 6197201 (2001-03-01), Misra et al.
Caruccio, F.T., Geidel, G., Pelletier, M., (1981) “Occurrence and predication of acid drainage”. J. of the Energy Division, ASCE, 107(1):167-178.
Doyle, F.M. and Mirza, A.H. (1990) “Understanding the mechanisms and kinetics of pyrite wastes” Proceedings of the Western Regional Symposium on Mining and Mineral Processing pp. 43-51.
Evangelou, V. P., (1998) “Pyrite Chemistry: The Key for Abatement of Acid Mine Drainage” Acidic Mining Lakes: Acid mine Drainage, Limnology and Reclamation Springer-Verlac, pp. 197-222.
Huang, X. and Evangelou, V.P. (1992) Abatement of acid mine drainage by encapsulation of acid producing geological materials, US Bureau of Mines, Contract No. J0309013, pp 1-60 (abstract only).
Kleinmann, R. L. P., (Jul. 1989) “Acid mine drainage: US Bureau of Mines researches and develops control methods for both coal and metal mines” Engineering Mining Journal 161-164.
Marshall, G.P., J.S. Thompson, and R.E. Jenkins, (1998) “New technology for the prevention of acid rock drainage”. Proceedings of the Randol Gold and Silver Forum, pp. 203-206.
Sobek, A. A., Schuller, W. A., Freeman, J.R., and Smith, R.M., (1978) Field and laboratory methods applicable to overburden mine soils. EPA 600/2-78-054.
Mehta, et al., Development of a process to prevent acid generation from waste rock and mine tailings, Environmental Issues and Management of Waste in Energy and Mineral Production, Proceedings of the International Conference on Environmental Issues and Mineral Production, 6th, Calgary, AB, Canada, May 30-Jun. 2, 2000, pp. 577-580.

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