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<br />B DECEMBER lt, 1090-TNE YWW6 RECORD
<br />New Heap Leach and
<br />Solid Waste Technologies
<br />McINTOSH, NM - Dr. Paul
<br />H. Johnson, ^ lonjume mcuilur•
<br />ji[d enjineer, announced rhu
<br />he plant to license and furthcr
<br />develop about 70 «w meWlur-
<br />jirsl and rolid waste uearmcnl
<br />and disposal pr«ores rhu he
<br />has developed.
<br />These new procctscr fell
<br />principally Into Wee eatejorier,
<br />rl::
<br />• The use of the `Ccliular
<br />Hcap Leaching process and a(1•
<br />prtuui (US Pucnl No.
<br />t}26,613) and scrcril us«in-
<br />ed in<cll physieil and ehemicil
<br />praasu ro «onomically Icsch
<br />and cnrironmcntally disport of
<br />rinudly dl types of ova that
<br />can be Icachcd at ciNcr tint or
<br />eoarre liter, I.e., very low-to•
<br />hijh jrade fold vrd silrcr ores,
<br />oaidc and oxide-ruifidc coppcr
<br />ores, uranium ores, arc., undo
<br />moss climatic conditions.
<br />• The use oI the `Cellular
<br />Nup Leachinj" process and
<br />sererol «w phyricil and chemi-
<br />cal In<cll protests so treat and
<br />pcrmancnlly disport of almoss
<br />all rypcs of solid wulc N an cn-
<br />rironmenrrllyiceure, aesthetic
<br />and low-cost manner, i.e., slur-
<br />ricd and non-slurried mineral
<br />aril Indusuiil wastes, municipal
<br />velure, oil-Imprejnmed randy
<br />and beach mamriah, some ra•
<br />dioanire and hatardeus wastes,
<br />some forms of sewaje, eonrami•
<br />noted soils, etc.
<br />• About 17 new pr«essa Nat
<br />efficiently recover lead, tint,
<br />coppcr, silrcr and jold from old,
<br />Sadly-oaidircd, mill lailinjs. In
<br />Ne overall pr«css, old Icad•xine
<br />mill tailfnjt arc rcmincd and
<br />rubjctted to new flotation and
<br />Iuchlnj pr«euct, dcwamrcd
<br />and pcrmancndy disposed of In a
<br />C<Ilulu Hcap Lcachinj System
<br />(tailed ^ "JoMson Brruonmcn-
<br />W Landfill' when uscd !or solid
<br />wane dispoul). The flotation
<br />eoneentraee would De furthcr
<br />orated in a `Chtmieil Sm<Itcr"
<br />to produce port metals and/or
<br />mail silo,
<br />N Nc cult' 1970s, Dr. JoM-
<br />fon inr<ntcd and, with Nc Acip
<br />of Holmes and Narver, Inc, of
<br />Oranjc, Cilifamia, eommereiil•
<br />ly developad the `Thin-Layer
<br />(TL) L<tchinj` cenctpl (U.S.
<br />Patcnl No. 1,017,709). This pro•
<br />eel hu 6e<n ror4 by S«iWad
<br />do Mincra Pudahucl, Ltd. fn
<br />Chile Io product approaimarcly
<br />e00,000 meuie toot of «finc0
<br />coppcr. It waf dw:chcdulcd for
<br />larje•tcale commercial use In
<br />Iht U.S. uranium Industry up urn
<br />/il IAc pri« of uranium fell to
<br />unccorsomic levels in Nc 19)Os.
<br />Bechtel Civil and Minerals
<br />Corp. now owns the patcnu.
<br />Basically, In the Cellular
<br />Ilcap Lcachinj proeeu an
<br />abort-jround Icach heap is con-
<br />aruclcd ar a tcria of rclarirely
<br />thin (about ~-10.10 feel (hick)
<br />horixonul layus that uc snbdi•
<br />tided imo t cunjulu jridt of
<br />ovcrlyinj, watcnijht and Inde-
<br />pendentlyplumbed cells. The
<br />lop lays of cells ue svuasire-
<br />ly formed, filled with crushed
<br />ore or solid wastes aril rubjeeted
<br />ro one or more "in-tell" physical
<br />and/or chemical processes.
<br />When there rlcpr arc finished,
<br />Ne conrcnu of a cell ue covered
<br />over by an orerlyinj «II.
<br />Crushed {old over may be
<br />uealcd by ehcmicil or bi«lumi-
<br />cal oaidarion, lonj-term (Ihe
<br />msalmum economic rccorcry
<br />period) cyanide lcachinj, rinsinj
<br />and deroslfication; topper and
<br />uranium ores may be acidtured, .
<br />Icachcd, rinsed and neuualixed;
<br />and jarba je can be wcl•eom-
<br />pieted and leaehed•6iodcjnded.
<br />Prc-vurmcm pr«asa [.n ilso
<br />be ufe0, i.e., many mill uilinjr
<br />tan be ticancd of pyrite and
<br />hcavy maul mineob by Bou•
<br />tion bcfor< bcinj unl to a Cdiu-
<br />lu Hcap for dewarerinj and final
<br />disposition. The aytrem tan be
<br />built with a hcavy, ware rrijhr,
<br />erosion-and-rupture-proof corn.
<br />Eatcntire laboratory and field
<br />rosin j hu be<n done on Ne C[I-
<br />lular Hcap Lcs[hinj of many
<br />fold, silrcr, oaidc and oaidc-sul-
<br />hde copper and uranium ores. A
<br />small commercial plan) wu uscd
<br />so successfully Icach low-jrsdc
<br />fold ores in [cravat Idaho.
<br />Thc pr«ores Nu arc uscd to
<br />rcucat and enruonmcnully dit•
<br />post of old Icad•ainc mill lail•
<br />injs include new eonccpu In oa-
<br />idc Ooution, uilinp, dtwuu•
<br />inj, "in<elt"lcachinj, aurxlart
<br />ruaor daijn, pressure leaeh•
<br />inj, atmospheric I<aehin j, me W
<br />rccorcry, liquid-solid separarioa
<br />and craporarion<ryslalliurion.
<br />For additioml inform orlon,
<br />tenon Johnon Raumh ant
<br />Development Corp., P.0- Bos
<br />)1, Mcinrosh, New kle ales
<br />17072. (SOSi 7j1.3179.
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