CA2069173A1 - Process and device for recovering gold particles - Google Patents
Process and device for recovering gold particlesInfo
- Publication number
- CA2069173A1 CA2069173A1 CA 2069173 CA2069173A CA2069173A1 CA 2069173 A1 CA2069173 A1 CA 2069173A1 CA 2069173 CA2069173 CA 2069173 CA 2069173 A CA2069173 A CA 2069173A CA 2069173 A1 CA2069173 A1 CA 2069173A1
- Authority
- CA
- Canada
- Prior art keywords
- mercury
- layer
- gold
- silver
- amalgam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/10—Obtaining noble metals by amalgamating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/10—Obtaining noble metals by amalgamating
- C22B11/12—Apparatus therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
ABSTRACT
Process and device for recovering gold particles found in grounded ore or substrates rich in gold, said process comprising the steps of: a)-attaching, by electrodeposition, a mercury layer (A) over a silver layer (P), which is attached to a metallic surface (B1); b)- attaching to said mercury layer (A), by molecular attraction, an overlaying mercury film (Hg); c)- submitting the gold particles present in grounded ore to repeated and systematic contact with the overlaying mercury film (Hg), in such a way that the gold particles contacting said overlaying mercury film form a gold/mercury amalgam which adheres to the mercury layer (A); d)-interrupting said repeated and systematic contact and removing the gold/mercury amalgam layer from said mercury layer (A) and provide another overlaying mercury film (Hg); and e)- repeating steps "c" and "d" until a desired recovering degrees of gold particles from the substrate is achieved.
Process and device for recovering gold particles found in grounded ore or substrates rich in gold, said process comprising the steps of: a)-attaching, by electrodeposition, a mercury layer (A) over a silver layer (P), which is attached to a metallic surface (B1); b)- attaching to said mercury layer (A), by molecular attraction, an overlaying mercury film (Hg); c)- submitting the gold particles present in grounded ore to repeated and systematic contact with the overlaying mercury film (Hg), in such a way that the gold particles contacting said overlaying mercury film form a gold/mercury amalgam which adheres to the mercury layer (A); d)-interrupting said repeated and systematic contact and removing the gold/mercury amalgam layer from said mercury layer (A) and provide another overlaying mercury film (Hg); and e)- repeating steps "c" and "d" until a desired recovering degrees of gold particles from the substrate is achieved.
Description
j ~69~
' .
PROCESS AN~ DEVIC~ FO~ R~OVERING GOLD PA~TICI ES
. I .
Thlo invention rel~to~ to a proce~e and dovic ~ that en~ble~ r~t~ntlon ~nd rocovory of ~old pArtic lles of normallY ~o~nd in Broundod gOla ~l~ninB
oro and oubotrateo, in order to oubstltut e th-t~aditional mereury ~m~l~amatlon prooos~ snd ~ubotantlally elimlnatin~ tho moroury reolduoo Tho ~rooooo obJec~ of the ~reoon~ ~nvont~ on i4 ~hrticularlY indiGatod for the ro~roc~sln~ o~ q~i~k ollvor oont~mlnated roJ1du~o o~ prlor prooeoe es, $n ordor to ~taln not only all tho r~m~lnin~ ~ol d but~
additlonally, the rooldual ~eroury~
~ ho known ~roo~os ~ur tro4tin~ ~ub~ tr~oo oontainin~ ~old do not load to an o~loi~nt re ~ovory of tho ~old ~artlolo~ and freo morcury norm~ll y u~od 1~ ohld trcatin~ proooo808, al~ owln~ ~bot ~nti~l loooo~ o~ ~old and moroury d~lvory in ~ho r~ sldu~l oubot~to.
ZO It la ~n ob~oct of tho ~rooont ln~ontlon to pro ~ldo ~rooo~o $or rooo~orln~ ~old ~rtloloo ~rom er ~und~d ore or ~inlng e~ubotr~to~ whloh maxim~ tho rot4ntlon o~ ~old, avoldin~ ito looo ln the ro ~ldual o~botr~to.
Z~ It 1~ another ob~oct o$ tho pr~sont invonti ~n to ~rovldo a ~roo~oo ~B mon~ionod ~bovo and whioh ogtl~izo~ the u~ of moroury in ord0r to o~l, nln~tc ~t8 ~rooonoo ln tho rooldua~ ~ubs~r~to an I ito p~llutln8 toxio of~ooto.
~t 18 otlll anothor o~oot o~ the prosont inv~ ~ntlon to ~rovldo ~ ~evlco for reoovoring ~o~d from ~r~ ~u~dod or mlnin~ sub~tr~too wh~Loh allow~ to a~hlov~ ~ tho adv~nt~Beouo r~ulte montlonod abovo ln relat: Lon to tho prooo~o.
36 ~o~rd~n~ tho procoJ~, the ob~ects o~ the ~nv~ ~ntlon ~ro ~oco~pll~hed by osrrylna out tho ~te~e -o: 1~
, .
.
:
.
-~ : ll ~ 2 06~73 .,i ~,` .
lncorporatln~ to a mo~lllc eurf~oo of ~ ~ eold partlclo rota~nin~ mo~ns a ~llv~r~meroury e m~
laYer~ whlch io f~rmly ~dhorod ~$1xod) tc ~ o~ld motulllc su~fuc~ and ~n o~rlsyin~ m~rcur~ fil~
that ic ~dhered, b~ moteoul~r ~ttraotio~, o the flxed silvor~m~roury Amsl~m layer;
b)- ~ubmitting the aold E~rtlcle~ oontainod ~ n tho ~ubetr~t~ to a ~hy lcal cont~ct wlth ~id ovo~ layin~
~eroury fllm tn order ~o umal~ to ~t le~t E art of 1~ the morourY film ln a 401d ~msl~am layor whi ch i~
~dherod to the ~lx~d oilvor~m~rcurY ~m~l~m laye r;
c)~ int~rru~ln~ tho cont~ot of o~id ~old p~ rtlclo retalnln~ ~o~no w~th the oubotrate rlch in ~old;
d)- ~ubDlttln~ tho ~old ~m~l~am layor to ~ ~h yoioal lS aot~o~ eu~loiont to liborato ~t ~rom tho attr ~otlon oxerted by the ~ixod ~ilvor~morcurY a~l~um 1E yor ln order to ~eparatc the ~m~l~m~ted ~oldh eroury ~rtloloo of said gold ~mal~am layo~ ~rc ~ tho j r~taln~n~ ~o~ne;
~)- a~plylng anothor ~erourY film ovor the ~ixod ollver~morcury um~l8a~ laYor; and ) - roF~tin~ at~po "a" ~o "e" untll a d ~oir~d r~covorln~ do~ro~ o~ ~old p~rtiol~a ~ro~ tho eubstr~c 1~ aohlwed~ i Z5 Tho procooo ~ dieoloood abov~ o~n ~o uae i ~or roooverln~ ~old ~artloloe ~ro~ ~lnin~ ~ubatr~ ~e not yct submlttod to th~ ~otion of the m~roury no ~n~lly ~pplled ~o ~old rot~lnin~ nt. In thls o~o ~, tho m~rcury ~r~nted ln the ~lnln~ cubo~rato~ r~ ~m~in~
~lrmly assre~at~d to tho ~o~d re~alnln~ mean~, whilo reaotlnB with the ~old ~ticleo oontainod ~n e~ld ~u~trateo ~hich remaln~ wlthout any ~oun~ o E froo mcrcury, ~v~n in lt~ roeidual port~on d~llvorl ~d to th- environm~nt.
36 In th~ cacc8 whero ~h~ mlnln~ Proc~eo u~o~ ~n i~ ~itl~l ;
charse of fro~ morourY ~ixod to the subotr~t~ ~o in , i .
.. ... ~ . .. ...... ~..... . . ... ....
- - ~ 206917~
:: 3 :
~mount~i oxoo-din~ th~e~ normally n-ooicaary fDr tran~formln~ almo~t all tho ~old in am~l~Am , tho preeient Procoo~ ~llow that the ~old and the ~r--m~ro~ry etill containod ~n th~ r~iJldual ~ nininB
~ 5 ~b~trato bc oub~ected to a p~y~io~l contact wl ~h tho ov~rl~y~n~ mercury l~yor ~dh~r~d to the 801d retainin~ means, formln~ l~y~rc o~ 401d ~mAl~l ~m ~nd mercury ro~peotlvoly, which are molocularly ~ ~herod to the ~lxod ~llvor/mercury ~ am layor of thl ~ Sold rotalnin~ m~ne. In thio CA~O, the ro ~ldual i~ub~trato8 do not d~l~v~r any r~lev~nt ~ou nt of mercury Qnd ~old partlcl~o to the onvironmont.
~he in~ontlon wlll be now doooribod wlth rof-r- nce to the attached drawin~, ~hloh ~ln~l~ fi~ur~ r~prl ~ent~
~ cro~o-o~ctional view o~ a Poeelble ombod~o~ ~ for the gold retainin~ moano.
Aocordln~ to ~he dr~wln~, th~ ~old r~tainln~ mo~na oomprl~eo a metalllo b~e~ plate B, pre~er~ble o E mlld ~low oarbon) ~teel~ ~lth one ~aoe Bl bein~ o~e~ ~i~lly ~r~tod to retaln, by moleoular ~ttr~otion, ml ~roury ~nd ~old. An oPp w lte ~aoe BZ o~ ~he motall~ ~ b~o pl~te B le normallY untreatod, ~ho pre~erred treatment sona~ato ln ~nco~por~ti: ~, by electrodo~o~lt~on (olootroplatln~)~ a ~ir~t 1~ ler o~
oopper C. A1W~Y~ by ~lootrodepo~ltlon, ~ ~ooond layer P, now o~ B~ lv~r, 1~ depoeited over ~ho ~opp~r l~yor C; ~nd ~inallY~ ~ th~rd l~y~r o~ merour ~ A lo do~o~ltod and am~l~am~te~ w~th th~ eilvor o ~ lto : ~ur~oe~ .
The ~ilv~r~morourY layer A ~Or~ hn lnt~r*~oe b ~tweon the ~irmly ~dherod eilver layer P and ~n o~r la~in~
~r~e m~roury ~ilm ~g lnoor~or~ted to ~ald lnt 3r~aoe : b~ ol~ctrod-poeitlon, Tho ~v~rl~yine mercury ~ilm HB ha~ ~ very hi~h ~6 ~tlr~c~ ~bne~n ~.r,tl L nu~ r~ll L~ l,he~
oilver~ercury un~le~ ye~, oven when eubmltted to the .
21~6!~1~3 ..
;.
attrltlon of hi~h oreJ reslduc flow rRtes.
A~ doscribod above, the gold p~rtlcle~ (an ~loo m~roury rc~idueo), when ~aking con~not wi h tho o~rl~yin~ mcrcury film~ ~tt~ch themoolves o tho latter. partiallY 4m~1e~mht~n~ in the oont~ct z ne.
Theroforo, to ~ot maxlmum recoverY, ~t i8 ne asoary to pr4moto m~xlmu~ cont~ot.
Sever~l w~y~ can bo devl~od to ~romote th~ c nt~ot.
The pre~orred moda~ usin~ onJ.y gr~vlty, 1~ to I rovido a t~ln and unlform flow of wat~r ~nd flnoly ~round ore (or roslduo~ rich in ~old) ov~r th~ re ~nt~on : our~ace.
To re~ovar tha tr~ad, oo~l-~mal~matod ~old~
olllt~blo m~oh~nioal ~e~na ~y b~ uood to ~ontly ~or~a t~e rotontlon our~ca, ro~ovln~ tho ~C ld ~nd the ~Xceo- m~roury.
A~ alroady dc~orlbod, 4$ter tho olo~nin~oc r~pln~
oper~tlon, ~ no~ ~llm o~ ovorl~yln~ m~roury n u~t be formod. Thie i~ eaolly dono by opr~ylng ~rec n ~roury ovor tho ~le~nod ~url7ao~, ~nd th~ o prOOesD ~n ~o ~t~r~od ~
Th~ ~lmpleet dovioe ualn~ thl~ Prooos~ oon~iot ln a lon~7 ~ontlY lnollnod du~t~ w~th ~ f~at botto~
doflnin~ sald r~7tontio~ ~ur~ao~ er whloh ~lc ~8 tho ~5 w~t~rJor~/r~aidu~ ~ixtur~. Th~ ~lat ~ttom ~ t~ins tho meroury ln ou~pr7noion in th~ roeldual fl ~w ~nd ale4 the ~old ~rtiol8s whloh ml~ht not bo ro sinod ; by tho ~orc~rY~
.
.
' .
PROCESS AN~ DEVIC~ FO~ R~OVERING GOLD PA~TICI ES
. I .
Thlo invention rel~to~ to a proce~e and dovic ~ that en~ble~ r~t~ntlon ~nd rocovory of ~old pArtic lles of normallY ~o~nd in Broundod gOla ~l~ninB
oro and oubotrateo, in order to oubstltut e th-t~aditional mereury ~m~l~amatlon prooos~ snd ~ubotantlally elimlnatin~ tho moroury reolduoo Tho ~rooooo obJec~ of the ~reoon~ ~nvont~ on i4 ~hrticularlY indiGatod for the ro~roc~sln~ o~ q~i~k ollvor oont~mlnated roJ1du~o o~ prlor prooeoe es, $n ordor to ~taln not only all tho r~m~lnin~ ~ol d but~
additlonally, the rooldual ~eroury~
~ ho known ~roo~os ~ur tro4tin~ ~ub~ tr~oo oontainin~ ~old do not load to an o~loi~nt re ~ovory of tho ~old ~artlolo~ and freo morcury norm~ll y u~od 1~ ohld trcatin~ proooo808, al~ owln~ ~bot ~nti~l loooo~ o~ ~old and moroury d~lvory in ~ho r~ sldu~l oubot~to.
ZO It la ~n ob~oct of tho ~rooont ln~ontlon to pro ~ldo ~rooo~o $or rooo~orln~ ~old ~rtloloo ~rom er ~und~d ore or ~inlng e~ubotr~to~ whloh maxim~ tho rot4ntlon o~ ~old, avoldin~ ito looo ln the ro ~ldual o~botr~to.
Z~ It 1~ another ob~oct o$ tho pr~sont invonti ~n to ~rovldo a ~roo~oo ~B mon~ionod ~bovo and whioh ogtl~izo~ the u~ of moroury in ord0r to o~l, nln~tc ~t8 ~rooonoo ln tho rooldua~ ~ubs~r~to an I ito p~llutln8 toxio of~ooto.
~t 18 otlll anothor o~oot o~ the prosont inv~ ~ntlon to ~rovldo ~ ~evlco for reoovoring ~o~d from ~r~ ~u~dod or mlnin~ sub~tr~too wh~Loh allow~ to a~hlov~ ~ tho adv~nt~Beouo r~ulte montlonod abovo ln relat: Lon to tho prooo~o.
36 ~o~rd~n~ tho procoJ~, the ob~ects o~ the ~nv~ ~ntlon ~ro ~oco~pll~hed by osrrylna out tho ~te~e -o: 1~
, .
.
:
.
-~ : ll ~ 2 06~73 .,i ~,` .
lncorporatln~ to a mo~lllc eurf~oo of ~ ~ eold partlclo rota~nin~ mo~ns a ~llv~r~meroury e m~
laYer~ whlch io f~rmly ~dhorod ~$1xod) tc ~ o~ld motulllc su~fuc~ and ~n o~rlsyin~ m~rcur~ fil~
that ic ~dhered, b~ moteoul~r ~ttraotio~, o the flxed silvor~m~roury Amsl~m layer;
b)- ~ubmitting the aold E~rtlcle~ oontainod ~ n tho ~ubetr~t~ to a ~hy lcal cont~ct wlth ~id ovo~ layin~
~eroury fllm tn order ~o umal~ to ~t le~t E art of 1~ the morourY film ln a 401d ~msl~am layor whi ch i~
~dherod to the ~lx~d oilvor~m~rcurY ~m~l~m laye r;
c)~ int~rru~ln~ tho cont~ot of o~id ~old p~ rtlclo retalnln~ ~o~no w~th the oubotrate rlch in ~old;
d)- ~ubDlttln~ tho ~old ~m~l~am layor to ~ ~h yoioal lS aot~o~ eu~loiont to liborato ~t ~rom tho attr ~otlon oxerted by the ~ixod ~ilvor~morcurY a~l~um 1E yor ln order to ~eparatc the ~m~l~m~ted ~oldh eroury ~rtloloo of said gold ~mal~am layo~ ~rc ~ tho j r~taln~n~ ~o~ne;
~)- a~plylng anothor ~erourY film ovor the ~ixod ollver~morcury um~l8a~ laYor; and ) - roF~tin~ at~po "a" ~o "e" untll a d ~oir~d r~covorln~ do~ro~ o~ ~old p~rtiol~a ~ro~ tho eubstr~c 1~ aohlwed~ i Z5 Tho procooo ~ dieoloood abov~ o~n ~o uae i ~or roooverln~ ~old ~artloloe ~ro~ ~lnin~ ~ubatr~ ~e not yct submlttod to th~ ~otion of the m~roury no ~n~lly ~pplled ~o ~old rot~lnin~ nt. In thls o~o ~, tho m~rcury ~r~nted ln the ~lnln~ cubo~rato~ r~ ~m~in~
~lrmly assre~at~d to tho ~o~d re~alnln~ mean~, whilo reaotlnB with the ~old ~ticleo oontainod ~n e~ld ~u~trateo ~hich remaln~ wlthout any ~oun~ o E froo mcrcury, ~v~n in lt~ roeidual port~on d~llvorl ~d to th- environm~nt.
36 In th~ cacc8 whero ~h~ mlnln~ Proc~eo u~o~ ~n i~ ~itl~l ;
charse of fro~ morourY ~ixod to the subotr~t~ ~o in , i .
.. ... ~ . .. ...... ~..... . . ... ....
- - ~ 206917~
:: 3 :
~mount~i oxoo-din~ th~e~ normally n-ooicaary fDr tran~formln~ almo~t all tho ~old in am~l~Am , tho preeient Procoo~ ~llow that the ~old and the ~r--m~ro~ry etill containod ~n th~ r~iJldual ~ nininB
~ 5 ~b~trato bc oub~ected to a p~y~io~l contact wl ~h tho ov~rl~y~n~ mercury l~yor ~dh~r~d to the 801d retainin~ means, formln~ l~y~rc o~ 401d ~mAl~l ~m ~nd mercury ro~peotlvoly, which are molocularly ~ ~herod to the ~lxod ~llvor/mercury ~ am layor of thl ~ Sold rotalnin~ m~ne. In thio CA~O, the ro ~ldual i~ub~trato8 do not d~l~v~r any r~lev~nt ~ou nt of mercury Qnd ~old partlcl~o to the onvironmont.
~he in~ontlon wlll be now doooribod wlth rof-r- nce to the attached drawin~, ~hloh ~ln~l~ fi~ur~ r~prl ~ent~
~ cro~o-o~ctional view o~ a Poeelble ombod~o~ ~ for the gold retainin~ moano.
Aocordln~ to ~he dr~wln~, th~ ~old r~tainln~ mo~na oomprl~eo a metalllo b~e~ plate B, pre~er~ble o E mlld ~low oarbon) ~teel~ ~lth one ~aoe Bl bein~ o~e~ ~i~lly ~r~tod to retaln, by moleoular ~ttr~otion, ml ~roury ~nd ~old. An oPp w lte ~aoe BZ o~ ~he motall~ ~ b~o pl~te B le normallY untreatod, ~ho pre~erred treatment sona~ato ln ~nco~por~ti: ~, by electrodo~o~lt~on (olootroplatln~)~ a ~ir~t 1~ ler o~
oopper C. A1W~Y~ by ~lootrodepo~ltlon, ~ ~ooond layer P, now o~ B~ lv~r, 1~ depoeited over ~ho ~opp~r l~yor C; ~nd ~inallY~ ~ th~rd l~y~r o~ merour ~ A lo do~o~ltod and am~l~am~te~ w~th th~ eilvor o ~ lto : ~ur~oe~ .
The ~ilv~r~morourY layer A ~Or~ hn lnt~r*~oe b ~tweon the ~irmly ~dherod eilver layer P and ~n o~r la~in~
~r~e m~roury ~ilm ~g lnoor~or~ted to ~ald lnt 3r~aoe : b~ ol~ctrod-poeitlon, Tho ~v~rl~yine mercury ~ilm HB ha~ ~ very hi~h ~6 ~tlr~c~ ~bne~n ~.r,tl L nu~ r~ll L~ l,he~
oilver~ercury un~le~ ye~, oven when eubmltted to the .
21~6!~1~3 ..
;.
attrltlon of hi~h oreJ reslduc flow rRtes.
A~ doscribod above, the gold p~rtlcle~ (an ~loo m~roury rc~idueo), when ~aking con~not wi h tho o~rl~yin~ mcrcury film~ ~tt~ch themoolves o tho latter. partiallY 4m~1e~mht~n~ in the oont~ct z ne.
Theroforo, to ~ot maxlmum recoverY, ~t i8 ne asoary to pr4moto m~xlmu~ cont~ot.
Sever~l w~y~ can bo devl~od to ~romote th~ c nt~ot.
The pre~orred moda~ usin~ onJ.y gr~vlty, 1~ to I rovido a t~ln and unlform flow of wat~r ~nd flnoly ~round ore (or roslduo~ rich in ~old) ov~r th~ re ~nt~on : our~ace.
To re~ovar tha tr~ad, oo~l-~mal~matod ~old~
olllt~blo m~oh~nioal ~e~na ~y b~ uood to ~ontly ~or~a t~e rotontlon our~ca, ro~ovln~ tho ~C ld ~nd the ~Xceo- m~roury.
A~ alroady dc~orlbod, 4$ter tho olo~nin~oc r~pln~
oper~tlon, ~ no~ ~llm o~ ovorl~yln~ m~roury n u~t be formod. Thie i~ eaolly dono by opr~ylng ~rec n ~roury ovor tho ~le~nod ~url7ao~, ~nd th~ o prOOesD ~n ~o ~t~r~od ~
Th~ ~lmpleet dovioe ualn~ thl~ Prooos~ oon~iot ln a lon~7 ~ontlY lnollnod du~t~ w~th ~ f~at botto~
doflnin~ sald r~7tontio~ ~ur~ao~ er whloh ~lc ~8 tho ~5 w~t~rJor~/r~aidu~ ~ixtur~. Th~ ~lat ~ttom ~ t~ins tho meroury ln ou~pr7noion in th~ roeldual fl ~w ~nd ale4 the ~old ~rtiol8s whloh ml~ht not bo ro sinod ; by tho ~orc~rY~
.
.
Claims (13)
1. Process for recovering gold particles found in grounded ore or mining substrates rich in gold, characterized in that it comprises the steps of:
a)- incorporating to a metallic surface (B1) of a gold particle retaining means a silver/mercury amalgam layer (A), which is firmly adhered (fixed) to said metallic surface (B1) and an overlaying mercury film (Hg) that is adhered, by molecular attraction, to the fixed silver/mercury amalgam layer (A);
b)- submitting the gold particles containing in the substrate to a physical contact with said overlaying mercury film (Hg) in order to amalgamate at least part of the mercury film (Hg) in a gold amalgam layer which is adhered to the fixed silver/mercury amalgam layer (A):
c)- interrupting the contact of said gold particle retaining means with the substrate rich in gold;
d)- submitting the gold amalgam layer to a physical action sufficient to liberate it from the attraction exerted by the fixed silver-mercury amalgam layer (A) in order to separate the amalgamated gold/mercury particles of said gold amalgam layer from the retaining means:
e)- applying another mercury film (Hg) over the fixed silver-mercury amalgam layer (A); and f)- repeating steps "a" to "e" until a desired recovering degree of gold particles from the substrate is achieved.
a)- incorporating to a metallic surface (B1) of a gold particle retaining means a silver/mercury amalgam layer (A), which is firmly adhered (fixed) to said metallic surface (B1) and an overlaying mercury film (Hg) that is adhered, by molecular attraction, to the fixed silver/mercury amalgam layer (A);
b)- submitting the gold particles containing in the substrate to a physical contact with said overlaying mercury film (Hg) in order to amalgamate at least part of the mercury film (Hg) in a gold amalgam layer which is adhered to the fixed silver/mercury amalgam layer (A):
c)- interrupting the contact of said gold particle retaining means with the substrate rich in gold;
d)- submitting the gold amalgam layer to a physical action sufficient to liberate it from the attraction exerted by the fixed silver-mercury amalgam layer (A) in order to separate the amalgamated gold/mercury particles of said gold amalgam layer from the retaining means:
e)- applying another mercury film (Hg) over the fixed silver-mercury amalgam layer (A); and f)- repeating steps "a" to "e" until a desired recovering degree of gold particles from the substrate is achieved.
2. Process for recovering gold particles found in grounded ore or mining residual substrates also containing free mercury, characterized in that it comprises the steps of:
a)- incorporating to a metallic surface (B1) of a gold particle retaining means a silver/mercury amalgam layer (A) which is firmly adhered (fixed) to said metallic surface (B1) and an overlaying mercury film (Hg) that is adhered, by molecular attraction, to the fixed silver/mercury amalgam layer (A);
b)- submitting the gold particles and the free mercury contained in the mining residual substrates to a physical contact with said overlaying mercury film (Hg), in order to amalgamate at least part of the overlaying mercury film (Hg) in a gold amalgam layer and to adhere, by molecular attraction, to the fixed silver/mercury amalgam layer (A), the gold amalgam layer and the free mercury contained in the mining residual substrate;
c)- interrupting the contact of said gold particle retaining means with the mining residual substrate;
d)- submitting the gold amalgam and the adhered free mercury layers to a physical action sufficient to liberate them from the attraction exerted by the fixed silver/mercury amalgam layer (A), in order to separate said gold amalgam and said adhered free mercury layers from the fixed silver/mercury amalgam layer (A) of the gold retaining means;
e)- applying and retaining , by molecular attraction, another mercury film (Hg) over the fixed silver/mercury amalgam layer (A); and f)- repeating steps "a" to "e" for successive charges of residual substrates.
a)- incorporating to a metallic surface (B1) of a gold particle retaining means a silver/mercury amalgam layer (A) which is firmly adhered (fixed) to said metallic surface (B1) and an overlaying mercury film (Hg) that is adhered, by molecular attraction, to the fixed silver/mercury amalgam layer (A);
b)- submitting the gold particles and the free mercury contained in the mining residual substrates to a physical contact with said overlaying mercury film (Hg), in order to amalgamate at least part of the overlaying mercury film (Hg) in a gold amalgam layer and to adhere, by molecular attraction, to the fixed silver/mercury amalgam layer (A), the gold amalgam layer and the free mercury contained in the mining residual substrate;
c)- interrupting the contact of said gold particle retaining means with the mining residual substrate;
d)- submitting the gold amalgam and the adhered free mercury layers to a physical action sufficient to liberate them from the attraction exerted by the fixed silver/mercury amalgam layer (A), in order to separate said gold amalgam and said adhered free mercury layers from the fixed silver/mercury amalgam layer (A) of the gold retaining means;
e)- applying and retaining , by molecular attraction, another mercury film (Hg) over the fixed silver/mercury amalgam layer (A); and f)- repeating steps "a" to "e" for successive charges of residual substrates.
3. Process, according to either claims 1 or 2, characterized in that the incorporation of said silver/mercury amalgam layer (A) and of said overlaying mercury film to the metallic surface (B1) of the gold particle retaining means includes the followiing steps:
i)- electrodepositing over said metallic surface (B1) a silver layer (P) and, over the latter, a mercury layer in order to form a silver/mercury amalgam layer (A);
ii)- incorporating, by pouring or spraying, an overlaying mercury film over said silver/mercury amalgam layer (A).
i)- electrodepositing over said metallic surface (B1) a silver layer (P) and, over the latter, a mercury layer in order to form a silver/mercury amalgam layer (A);
ii)- incorporating, by pouring or spraying, an overlaying mercury film over said silver/mercury amalgam layer (A).
4. Process according to claim 3, characterized in that the silver layer (P) is electrodeposited over a copper layer or copper plate (C).
5. Process according to claim 4, characterized in that said gold particle retaining means includes a structural body (B) supporting said copper layer or plate.
6. Process, according to claim 5, characterized in that said structural body (B) is a low carbon steel plate, over which the copper layer or plate (C) is attached.
7. Process, according to either claims 1 or 2, characterized in that the gold amalgam layer and the adhered free mercury amalgam layer are mechanically removable from the fixed silver/mercury amalgam layer (A) of said gold particle retaining means.
8. Process, according to claim 7, characterized in that the removing of the gold amalgam layer and of the adhered free mercury layer is obtained by scrapping the fixed silver/mercury amalgam layer (A).
9. Device for recovering gold particles found in grounded ore or mining substrates rich in gold, with or without free mercury residues, characterized in that it comprises a gold particle retaining means, presenting at least a metallic surface portion carrying and incorporating, by electrodeposition, a fixed silver/mercury amalgam layer (A), over which is adhered, by molecular attraction, an overlaying film of mercury (Hg), which is selectively detachable from said fixed silver/mercury amalgam layer (A) by a physical action, said overlaying film of mercury (Hg) being disposed in a way to contact with the gold particles and free mercury which are present in ore substrates.
10. Device, according to claim 9, characterized in that said metallic surface portion includes a silver layer (P) that carries and retains the silver/mercury amalgam layer (A).
11. Device, according to claim 10, characterized in that said silver layer (P) is obtained by electrodeposition over a copper layer or plate (C).
12. Device, according to claim 11. characterized in that the copper layer or plate (C) is affixed to a structural body (B).
13. Device, according to claim 12. characterized in that said structural body (B) is a steel plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRP19102285 | 1991-05-28 | ||
| BR9102285A BR9102285A (en) | 1991-05-28 | 1991-05-28 | PROCESS AND DEVICE FOR PARTICULATED GOLD MINING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2069173A1 true CA2069173A1 (en) | 1992-11-29 |
Family
ID=4052034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2069173 Abandoned CA2069173A1 (en) | 1991-05-28 | 1992-05-21 | Process and device for recovering gold particles |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU1719492A (en) |
| BR (1) | BR9102285A (en) |
| CA (1) | CA2069173A1 (en) |
| GB (1) | GB2256203A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671868A (en) * | 1983-08-24 | 1987-06-09 | Leo Ottrok | Method for recovering gold, platinum or silver from an ore containing gold dust, platinum dust or silver dust |
| IT1184423B (en) * | 1985-04-11 | 1987-10-28 | Antonio Ferro | METHOD AND APPARATUS FOR THE EXTRACTION OF AMALGIBLE METALS FROM TORBIDE |
-
1991
- 1991-05-28 BR BR9102285A patent/BR9102285A/en not_active Application Discontinuation
-
1992
- 1992-05-21 CA CA 2069173 patent/CA2069173A1/en not_active Abandoned
- 1992-05-22 GB GB9210982A patent/GB2256203A/en not_active Withdrawn
- 1992-05-28 AU AU17194/92A patent/AU1719492A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| BR9102285A (en) | 1993-01-05 |
| AU1719492A (en) | 1992-12-03 |
| GB9210982D0 (en) | 1992-07-08 |
| GB2256203A (en) | 1992-12-02 |
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| Date | Code | Title | Description |
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