SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Gold/Mining/Energy : ECHARTERS
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: Al Cern who wrote (2607)5/13/1998 8:20:00 PM
From: E. Charters  Read Replies (2) of 3744
 
Yestech is a chemical explanation of using an iron oxide solution to leach sulfide in a widely used continuous mill process known as counter current decantation. It is a bit too complexly worded with an eye to keeping the competition confused as to their actual working setup. The liberal use of preferred and "one embodiment", then "another", etc is your clue. They are also randomly speculating about a number of processes and their results, not tested. It is a kind of academic dreaming. They are also trying to get a patentable edge with what has been basically tried in a lot of situations already. (Agnew Lake) Bioleach has been around for twenty or so years. Money to build mills comes and goes though, no matter the technology.

The drag in using bioleach tech is that it is not tested fully in scale tests that give capital markets ease of mind in raising money. Even where technology is proven and gold probably can be mined at a profit it is hard to raise mill money. High tech unproven methods would be doubly hard.

The trick is to remove the acid and heat that will kill the bacteria.
I know of a few ways that can be done. Cost to generate the neutralizing solutions that do not gum up the works with precipitant is a factor, perhaps not a supra large one. Reworking the leach pad may not be necessary.

echarter@vianet.on.ca

The Canadian Mining Newsletter
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News