PH Taolo ea Boleng ea Tharollo ea Sodium Cyanide ka Phatlalatso ea Khauta bakeng sa ho Nkoa Khauta

1. Selelekela

Ho ntsha gauta ka hara moru ho eme e le mokhoa o atileng haholo wa ho ntsha kgauta ho tswa majweng a boleng bo tlase. Mokgweng ona, tharollo ya sodium cyanide e sebediswa hangata e le moemedi wa ho ntsha gauta. Har'a mabaka a mangata a susumetsang bokgoni le polokeho ya ho ntsha gauta ka hara moru, ho laola boleng ba pH ba Tharollo ya Sodium Cyanide ke ntho ya bohlokwa haholo.

2. Melao-motheo ea Lik'hemik'hale Motheong oa Taolo ea Boleng ba pH

2.1 Boitšoaro ba ho Qhala Khauta

Ha ho sebediswa tharollo ya Sodium Cyanide ho ntsha kgauta, ho hlaha karabelo e itseng ya dikhemikhale. Tlas'a maemo a alkaline, karabelo ena e sebetsa haholo. Nakong ya karabelo, di-ion tsa cyanide tse ka hara tharollo di kopana le kgauta. Tshebedisano ena e fella ka ho thehwa ha di-complex tsa kgauta e qhibilihang - cyanide, e leng se nolofalletsang ho ntshwa ha kgauta lerung.

2.2 Cyanide Stability le pH

Cyanide e teng sebakeng sa tekano ka har'a tharollo. Cyanide e ka sebetsana le li-ion tsa haedrojene tse teng ka har'a tharollo. Ha tharollo e le acidic haholoanyane (litekanyetso tse tlase tsa pH), karabelo ena e lebisa ho thehoeng ha hydrogen cyanide, khase e chefo haholo. Sena ha se bake feela tahlehelo ea cyanide, ho eketsa tšebeliso ea moemeli oa leaching, empa hape e beha tšokelo e kholo ho bophelo bo botle le polokeho ea basebetsi ka lebaka la chefo ea hydrogen cyanide. Ka hona, ho bohlokoa ho boloka pH e nepahetseng ea alkaline. E thusa ho fokotsa ho etsoa ha khase ea hydrogen cyanide le ho netefatsa botsitso ba cyanide tharollong ea ho tsoa ha khauta hantle.

3. Optimal pH Boleng Range

Ka tlwaelo, moelelong wa Heap Leaching bakeng sa ho Ntša Khauta ka ho sebedisa tharollo ya sodium cyanide , tekanyo e ntle ya pH ka kakaretso e nkuwa e le pakeng tsa 10 le 11.5.

3.1 pH Tlas'a Sebaka se Molemohali

Haeba boleng ba pH ba tharollo ea sodium cyanide bo theoha ka tlase ho 10. liphello tse 'maloa tse mpe li ka hlaha. Taba ea pele, sekhahla seo khauta e qhibilihang ka sona se tla fokotseha haholo. Karabelo lipakeng tsa khauta le li-ion tsa cyanide ha e ratehe, e lebisang ho ts'ebetsong e tlase ea ho ntšoa ha khauta ho ore. Taba ea bobeli, joalo ka ha ho boletsoe pejana, sebopeho sa khase ea hydrogen cyanide e tla eketseha. Sena se kotsi haholo ho basebetsi sebakeng sa merafo hape se na le phello e mpe tikolohong. Ho feta moo, maemong a tlase a pH, litšila tse ling tse ka har'a ore li ka qhibiliha habonolo, tsa kena-kenana le ho etsoa ha meaho ea khauta - cyanide le ho fokotsa sekhahla sa ho tsoa ha khauta.

3.2 pH Holimo ho Lebelo le Lekaneng

Le hoja karabelo pakeng tsa khauta le ion ea cyanide e ratoa tlas'a maemo a alkaline, haeba pH ea boleng e phahame haholo (ka holimo ho 11.5), mathata a ka boela a hlaha. Alkalinity e feteletseng e ka baka pula ea li-hydroxide tsa tšepe tse itseng. Mohlala, li-ion tsa tšepe tse kang tšepe, aluminium le k'halsiamo tse teng ka har'a ore li ka etsa li-insoluble hydroxides. Li-hydroxide tsena tse sa tsitsang li ka koahela bokaholimo ba likaroloana tsa ore. Lera lena la ho roala le ka sitisa ho kopana pakeng tsa tharollo ea sodium cyanide le liminerale tse nang le khauta, ka hona ho fokotsa sekhahla sa ho tsoa ha khauta. Ho feta moo, litekanyetso tse phahameng tsa pH li ka hloka ho eketsoa ha lintho tse ngata tsa alkaline, ho eketsa litšenyehelo tsa ts'ebetso.

4. Mekhoa ea ho fetola boleng ba pH

4.1 Kalaka (Calcium Hydrooxide)

Kalaka ke e 'ngoe ea li-reagent tse sebelisoang haholo bakeng sa ho fetola boleng ba pH ba tharollo ea sodium cyanide ho heap leaching. Ha kalaka e eketsoa tharollong, e arabela le metsi. Karabelo ena e ntša li-ion tsa hydroxide, tse eketsang boleng ba pH ba tharollo, e leng se etsang hore e be alkaline e ngata. Kalaka e theko e tlase haholo ebile e fumaneha habonolo, e leng se etsang hore e be khetho e tsebahalang bakeng sa ts'ebetso e kholo ea heap leaching. Leha ho le joalo, ha ho sebelisoa kalaka, ho lokela ho eloa hloko tekanyo ea eona. Ho eketsa kalaka haholo ho ka lebisa mathateng a kang ho thehoa ha sekala liphaepheng le lisebelisoa. Lebaka ke hobane calcium ka kalaka e ka arabela le li-ion tsa Carbon ka tharollong ho etsa calcium carbonate.

4.2 Soda (Sodium Hydrooxide)

Sodium hydroxide ke e 'ngoe e sebetsang ea pH-e fetola moemeli. Ha e kenngoa ho sodium cyanide solution, e ikarola ka metsing. Karohano ena e lokolla li-ion tsa hydroxide, tse ka eketsang ka potlako boleng ba pH ba tharollo. Ha ho bapisoa le lime, sodium hydroxide e na le pH e potlakileng le e nepahetseng haholoanyane. Hangata e sebelisoa maemong ao ho ona ho hlokahalang tokiso e potlakileng le e nepahetseng ea boleng ba pH, joalo ka litekong tsa laboratori - tsa sekala kapa ts'ebetso e itseng ea qubu e nyane. Leha ho le joalo, sodium hydroxide e batla e theko e boima ho feta kalaka, e ka fokotsang ts'ebeliso ea eona tlhahisong e kholo ea indasteri.

5. Tlhokomelo le Taolo ea Boleng ba pH

5.1 li-sensors tsa pH

Ho etsa bonnete ba hore boleng ba pH ba tharollo ea sodium cyanide ts'ebetsong ea heap leaching bo lula bo le ka har'a sebaka se nepahetseng, lisensara tsa pH li atisa ho sebelisoa bakeng sa tlhahlobo ea nako ea sebele. Li-sensor tsa pH ke lisebelisoa tse khonang ho bona bongata ba li-ion tsa hydrogen tharollong. Ba fetolela mohopolo ona hore e be lets'oao le ts'oanang la motlakase, ebe le hlahisoa e le boleng ba pH. Lisensara tsena hangata li beoa libakeng tse ka sehloohong tsa qubu ea leaching, joalo ka litanka tsa polokelo ea leaching solution, liphaephe tsa ho fana ka tharollo ea leaching ho qubu, le moo ho tsoang qubu ka mor'a ts'ebetso ea leaching. Ka ho tsoela pele ho beha leihlo boleng ba pH, basebelisi ba khona ho bona ka potlako ho kheloha leha e le hofe ho tloha sebakeng se nepahetseng ebe ba nka mehato e nepahetseng ea ho lokisa.

5.2 Litsamaiso tsa Taolo tse Itirisang

Ts'ebetsong ea sejoale-joale ea heap leaching, litsamaiso tsa taolo ea othomathike hangata li kopantsoe le li-sensors tsa pH ho fihlela taolo e nepahetseng le e sebetsang ea pH ea boleng. Litsamaiso tsena tsa taolo ea othomathike li ka hlophisoa hore li fetole litekanyetso tsa pH - li-agent tse fetolang (joalo ka lime kapa soda) ho ipapisitse le data ea nako ea 'nete ea pH e bonoang ke li-sensor. Mohlala, haeba boleng ba pH ba tharollo bo theoha ka tlase ho moeli o behiloeng ka tlase, sistimi e ikemetseng ea taolo e tla eketsa sekhahla sa phallo ea lime slurry kapa sodium hydroxide solution e kenyelletsoang tharollo ea leaching ho phahamisa boleng ba pH. Ka lehlakoreng le leng, haeba boleng ba pH bo feta moeli o ka holimo, tsamaiso e tla fokotsa tekanyo ea pH - e fetola moemeli. Mokhoa ona oa ho laola ka boiketsetso ha o ntlafatse feela ho nepahala ha taolo ea boleng ba pH empa hape o fokotsa matla a basebetsi le ho netefatsa botsitso le tsoelopele ea ts'ebetso ea qubu ea leaching.

6. Qetello

Ka har'a qubu ea ho ntša khauta ka tharollo ea sodium cyanide, taolo e tiileng ea pH ea tharollo e bohlokoa haholo. Boleng bo nepahetseng ba pH bo pakeng tsa 10 le 11.5 bo netefatsa ho qhibiliha ha khauta hantle, bo fokotsa tšebeliso ea cyanide, hape bo netefatsa polokeho ea basebetsi le tikoloho. Ka ho sebelisa pH e nepahetseng - lisebelisoa tse lokisoang joalo ka lime le soda, le ho kenya ts'ebetso ea ho lekola nako ea 'nete le taolo e ikemetseng ka li-sensors tsa pH le sistimi e ikemetseng ea taolo, lik'hamphani tsa merafo li ka ntlafatsa ts'ebetso ea qubu ea leaching, tsa ntlafatsa litefiso tsa ho khutlisa khauta, le ho fokotsa litšenyehelo tsa ts'ebetso. Ha tlhoko ea khauta e ntse e hola, lipatlisiso tse tsoelang pele le ntlafatso ea theknoloji ea taolo ea boleng ba pH li tla bapala karolo ea bohlokoa ntlafatsong ea moshoelella ea indasteri ea merafo ea khauta.