Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells
Patent
1975-10-17
1977-08-23
Purser, Ernest R.
Mining or in situ disintegration of hard material
In situ conversion of solid to fluid
Input and output wells
75101R, 423 36, E21B 4328
Patent
active
040435997
ABSTRACT:
This invention pertains to a method for in-situ mining of copper values from ore formations and, more particularly, this invention pertains to oxidative in-situ mining of copper wherein, for example, an oxygen-acid, a ferric iron-acid or a nitrate-acid lixiviant is being employed for recovering copper values. Further, this invention pertains to the recovery of copper from a deposit in which the ratio of pyrite to chalcopyrite is low. Still further, this invention pertains to a combination of acid-preinjection, monitoring, acid adjustment and additional monitoring or tell-tale ion monitoring for acid supply increase or decrease in the ore formation as steps in a combination for rendering highly controllable the acid preinjection process, thus providing further improvements to in-situ mining processes.
Additionally, this invention pertains to a broad range of in-situ leaching processes including, for example, oxidative leaching of nickel sulfides, molybdenum sulfides or rhenium sulfides, or an oxidative leaching of pitch blende.
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Cathles, III Lawrence MacLagan
Hsueh Limin
Lingane Peter James
Kennecott Copper Corporation
Purser Ernest R.
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