Bioadsorption alteration of iron sulfide surfaces

Details Bioadsorption alteration of iron sulfide surfaces Bioadsorption alteration of iron sulfide surfaces

1979-10-23

1981-05-26

Halper, Robert

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

209 5, 209 46, 209166, 44 15R, 435262, B03B 100

Patent

active

042696992

ABSTRACT:
The sulfide surfaces of finely-divided impure iron sulfide-containing minerals such as pyritic ores or coals are rendered hydrophilic by the adsorption of conditioned, inorganic sulfide-oxidizing bacteria. This adsorption of conditioned bacteria occurs in a short time to render the surfaces hydrophilic and allows these altered sulfide particles to be separated from hydrophobic solids by flotation, oil-agglomeration or the like. This bioadsorption process has particular applicability to pyritic coal beneficiation.

REFERENCES:
patent: 2829964 (1958-04-01), Zimmerley
patent: 3305353 (1967-02-01), Duncan
patent: 3796308 (1974-03-01), McIlhinney
92066a, Chem. Abst., Microbiol. Desulf. of Pyritic Coal, Ashaet al., 1977.
92067r, Chem. Abst., Microbiol. Desulf. of Coal, Dugan et al., 1978.
177762e, Chem. Abst., Land Use Limitators for Utilization of Bact. Removal from Coal, Roffman, 1979.
207049x, Microbiol. Coal Desulf., Chem. Abst., Grudeu et al., 1979.

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