Ngwa Usoro Cyanidation na nyocha maka ọla ọla edo na-ebu ọla

Okwu Mmalite

N'akụkụ nke mmepụta ọla edo, nke usoro cyanidation kemgbe ogologo oge bụ isi nkuku n'ihi nhọrọ ya na ike ya. Otú ọ dị, mgbe a na-emeso ọla ọla edo na-ebu ọla kọpa, mgbagwoju anya nke mineralogy na-eweta ihe ịma aka pụrụ iche. Dị ka ọla kọpa, ọlaọcha, na ọla edo orebody akara ule n'ụwa nile na-aga n'ihu na-ada ada, na mineralogy gbara ya gburugburu na-aghọwanye iche iche, ọ dị oké mkpa iji kwalite usoro cyanidation maka ndị a mgbagwoju ore. Bọọgụ blọgụ a na-enyocha ngwa na nyocha nke cyanidation maka ọla ọla edo na-ebu ọla kọpa, na-achọ ịnye nghọta n'ime ụzọ ọgwụgwọ dị irè.

Ihe ịma aka dị na Cyanidating Copper-Bearing Gold Ores

Ihe mgbagwoju anya nke mineral

ọla ọla edo na-ebu ọla na-enwekarị mineral dị iche iche, gụnyere metal sulfide metal dị ka pyrite, pyrrhotite, chalcopyrite, na sphalerite. Na mgbakwunye, ha nwere ike ịnwe ion dị ka Fe²⁺, Cu²⁺, Zn²⁺, S²⁻ na Fe³⁺ n'ime mkpụrụ osisi. N'oge usoro leaching cyanidation, ihe ndị a nwere ike iri nnukwu ego cyanide ma gbazee oxygen. Dịka ọmụmaatụ, ọnụnọ Cu²⁺ nwere ike meghachi omume na cyanide, na-akpụ ụlọ ndị kwụsiri ike, si otú a na-ebelata cyanide n'efu maka mgbasa ọla edo. Ọ bụghị naanị na nke a na-abawanye oriri cyanide kamakwa na-ebelata arụmọrụ nke ịcha ọla edo.

Oriri Cyanide

Ọdịnaya ọla kọpa dị elu na ọla na-eduga n'oke oke oriri cyanide. Ọla kọpa soluble n'ime ihe ọṅụṅụ leach na-emeghachi omume na cyanide, na-akpata ụgwọ ọrụ dị elu na-anabataghị. N'ọnọdụ ụfọdụ, akara ọla kọpa dị na nri nwere ike ịgbanwe ka oge na-aga, dị ka a hụrụ na Geda Bek nke Anglo Asia Mining na Azerbaijan. Mgbe mmalite nke agitation leach na resin - in - pulp gold ore nhazi osisi, ọla kọpa akara ule dị elu karịa ka a tụrụ anya na-eduga n'ịba ụba cyanide oriri, n'agbanyeghị na osisi nwere ike ijikwa nnukwu ọla kọpa mkpokọta na leach liquors na-enweghị emetụta gold mmepụta nke ukwuu.

Ngwa nke Usoro Cyanidation maka ọla ọla edo na-ebu ọla

Amonia - Cyanide Leaching na-enyere aka

Otu ụzọ a ga-esi dozie ihe ịma aka ndị dị na cyaniding ọla ọla edo na-ebu ọla bụ iji amonia - cyanide leaching na-enyere aka. N'ebe a na-egwupụta ihe nke Geda Bek, a kpọbatara amonia n'ime sekit na-eri nri iji belata oriri cyanide. Achọpụtara na usoro a dị irè n'ibelata mmịpụta ọla kọpa, si otú a na-ebute mbelata dị ukwuu na oriri cyanide n'ime usoro leaching zuru oke. Ojiji nke amonia na ọla kọpa - gold cyanide leach sistemu nwere ogologo akụkọ ihe mere eme, malite na 1902 mgbe Hunt kwadoro iji ya belata oriri cyanide n'oge ọla edo na-esi na ọla kọpa - na-ebu orres. A na-eji usoro cyanide amonia mee ihe n'ahịa iji gwọọ ọdụdụ sitere na Comstock Lode na Nevada na ọla edo cupriferous na Dale, California.

Ngwọta nke Ore Pulp

Idozi ebe a na-eme ahịhịa bụ ihe ọzọ dị mkpa na usoro cyanidation maka ọla ọla edo na-ebu ọla. Pretreatment alkaline nwere ike ibelata oriri cyanide ma melite ogo cyanide leaching nke ọla edo. Mgbe a naghị emepụta pulp ore, CN n'efu na ya bụ nke kacha nta, na-egosi na Fe²⁺, Zn²⁺, S²⁻ na ion ndị ọzọ na-eri CN, yana ọdịnaya nke Cu²⁺, Fe³⁺, Zn²⁺ ions bụkwa nke kacha ala. Mgbe pretreatment, na free CN⁻ na ore pulp bụ dịtụ elu, na Cu²⁺, Fe³⁺, Zn²⁺ ion dị elu karịa ndị na-enweghị pretreatment, nke pụtara na oriri nke free CN⁻ mgbe pretreatment na-ebelata, na ndị na-emerụ ions na-adịghị eri site CN⁻. Ya mere, pretreatment alkaline tupu cyanide leaching nwere ike ịba uru.

Ntuziaka na njikarịcha

Mmepe nke New Reagents na Usoro

Ndị na-eme nchọpụta na-enyocha ihe ọhụrụ na usoro ọhụrụ iji meziwanye usoro cyanidation maka ọla ọla edo na-ebu ọla kọpa. Dịka ọmụmaatụ, iji oxidants inyeaka bụ mpaghara elekwasị anya. Ịgbakwunye oxidants (dị ka oxygen dị ọcha ma ọ bụ oxides ndị ọzọ) n'oge usoro ịhịa aka n'ahụ nwere ike ịbawanye ọdịnaya "oxygen na-arụ ọrụ nke ọma" na pulp ore, meziwanye gburugburu ebe obibi nke cyanidation, mee ka ọsọ ntanaka dịkwuo elu, belata oge nkwụsịtụ, ma belata oriri cyanide. A na-akwalite ojiji nke oxidants inyeaka na gburugburu ụwa dịka teknụzụ kachasị mma maka ịkwalite usoro cyanidation. Tụkwasị na nke ahụ, mmepe nke ndị na-emepụta ihe ọhụrụ, dị ka thiosulfate, bụ nke gosipụtara ike ịwepụ ọla edo site na ọla kọpa na-ebu ọla edo na-arụ ọrụ nke ọma, bụkwa ntụziaka nyocha dị mkpa.

Usoro njikọta na njikarịcha

Ịmekọrịta usoro dị iche iche nwekwara ike ime ka ọ dị mma. Dịka ọmụmaatụ, ijikọ osisi leach mkpasu iwe na arụ ọrụ heap leach/ADR/SART dị ugbu a, dịka a na-eme na ogbunigwe Geda Bek, nwere ike ime ka usoro a na-arụ ọrụ nke ọma karị. Usoro resin-in-pulp, ebe a na-enweta ọla edo site na kọntaktị na resin mgbanwe ion kpọmkwem, bụ akụkụ dị mkpa nke njikọ a. Site n'ịkwalite nchikota nke usoro na akụrụngwa ndị a, enwere ike ịkwalite arụmọrụ nke usoro cyanidation maka ọla ọla edo na-ebu ọla kọpa.

mmechi

Usoro cyanidation maka ọla ọla edo na-ebu ọla ka bụ ụzọ dị mkpa na ụlọ ọrụ Ngwuputa n'agbanyeghị ihe ịma aka ya. Site na atumatu dị ka amonia - enyemaka cyanide leaching, ore pulp pretreatment, na-aga n'ihu na nyocha na mmepe nke ọhụrụ reagents na nhazi nhazi, arụmọrụ na ike akụ na ụba nke usoro cyanidation nwere ike imeziwanye. Ka ụlọ ọrụ na-egwuputa ihe na-aga n'ihu na-eche ihe ịma aka nke ibelata akara ogo ore na mgbagwoju anya mineralogy, ihe ọhụrụ na-aga n'ihu na usoro cyanidation maka ọla kọpa na-ebu ọla edo ga-adị mkpa iji hụ na mmepụta ọla edo na-adịgide adịgide.