
1. Okwu Mmalite
Ọlaedo abụrụla ihe bara uru nke ukwuu n'ọtụtụ ebe, site n'ịme ihe ịchọ mma ruo na ngwa eletrọnịkị na ego. Ịmịpụta ọlaedo site na ihe ndị dị n'ime ya nke ọma na nke akụ na ụba bụ akụkụ dị mkpa nke ụlọ ọrụ igwu ọlaedo. Usoro Cyanidation ọdịnala , nke na-eji cyanide dị ka ihe na-agbaze ọlaedo site na ihe ndị dị n'ime ya, ejirila ya nke ukwuu n'ihi oke mbelata ya na nhọrọ dị mma. Agbanyeghị, o nwekwara oke, karịsịa mgbe ọ na-emeso ihe ndị dị n'ime ọlaedo Refractory . Ihe ndị na-adịghị mma bụ ndị a na-ejikarị ọlaedo eme ihe na mineral sulfide, usoro cyanidation ọdịnala enweghịkwa ike iwepụta ọlaedo nke ọma na ha. Nke a emeela ka e nwee mmepe nke teknụzụ ọhụrụ, nke usoro oxidation nrụgide - cyanidation pụtara ìhè.
2. Ụkpụrụ nke Oxidation Nrụgide - Usoro Cyanidation
2.1 Oxidation nrụgide
Nzọụkwụ mbụ nke usoro ọhụrụ a bụ nrụgide oxidation. N'ime ọla edo na-emegharị ahụ, a na-etinyekarị ọla edo n'ime mineral sulfide dị ka pyrite na arsenopyrite. N'okpuru ọnọdụ nkịtị, cyanide enweghị ike ịnweta ọla edo nke ọma. A na-eme oxidation nrụgide na autoclave na okpomọkụ dị elu (na-abụkarị 120 - 220 Celsius) na nrụgide (ọtụtụ ikuku). N'ebe a dị elu - okpomọkụ na gburugburu nrụgide dị elu, a na-eme ka mineral sulfide oxidized. Usoro oxidation a na-akụda mineral sulfide, na-ahapụ ọla edo a kpuchiri ekpuchi ma mee ka ọ dịkwuo mfe maka nzọụkwụ cyanidation na-esote.
2.2 Cyanidation
Mgbe nrụgide oxidation gasịrị, a na-edobe slurry ore na usoro cyanidation. Cyanide ion na-emeghachi omume na ọla edo n'ihu ikuku oxygen. Ọlaedo ahụ na-etolite mgbagwoju anya nke nwere ion cyanide, nke enwere ike kewapụ ya na ihe ndị fọdụrụ na ore site na ụzọ ndị dị ka nkewa siri ike - mmiri mmiri.
3. Usoro usoro
3.1 Nkwadebe ore
Nzọụkwụ mbụ bụ ịkwadebe ore. A na-ebu ụzọ gwepịa ọla edo a na-emegharị emegharị ma gwerie ya ka ọ bụrụ ezigbo urughuru nha. Nke a na-abawanye ebe elu nke ore, nke bara uru maka ma nrụgide oxidation na usoro cyanidation. Ihe mgbaru ọsọ bụ iji nweta urughuru size na-enye ohere maka ịrụ ọrụ nke ọma chemical Jeremaya mere mgbe ka na-jikwaa na ụdi nhazi nzọụkwụ.
3.2 Nrụgide Oxidation Ogbo
Mgbe ahụ, a na-enye nri nke ọma n'ala n'ime autoclave. A na-ewebata oxygen n'ime autoclave, a na-edozikwa okpomọkụ na nrụgide na ọkwa kwesịrị ekwesị. Oge obibi na autoclave dịgasị iche dabere n'ụdị ọla mana ọ na-abụkarị awa ole na ole. N'ime oge a, a na-eme ka ihe ndị dị na sulfide dị n'ime ala na-ekpo ọkụ. Mgbe usoro oxidation nrụgide gasịrị, a na-ewepụ slurry ahụ site na autoclave.
3.3 Cyanidation Ogbo
A na-ajụ oyi slurry nke e ji oxidized mee ma bufee ya na tankị cyanidation. A na-agbakwunye mmiri cyanide, nke na-abụkarị Sodium Cyanide , na tankị ahụ. A na-akpali slurry ahụ iji hụ na ọ na-ejikọ nke ọma n'etiti mmiri cyanide na ihe ndị ahụ. Ọlaedo dị n'ime ọla ahụ na-emeghachi omume na ion cyanide iji mepụta ihe na-agbaze agbaze. Usoro cyanidation na-ewekarị ọtụtụ awa iji ruo ọkwa mwepụta Gold dị elu.
3.4 Gold mgbake
Mgbe usoro cyanidation gasịrị, nzọụkwụ ọzọ bụ ịchọta ọlaedo ahụ site na ngwọta cyanide. Otu ụzọ a na-ejikarị eme ihe bụ usoro Carbon - in - pulp (CIP) ma ọ bụ carbon - in - leach (CIL). A na-agbakwunye carbon a na-arụ ọrụ na ngwọta cyanide, a na-etinyekwa ngwakọta gold - cyanide n'elu Carbon a na-arụ ọrụ . A na-ekewapụ carbon nwere ọlaedo a na-etinye na ngwọta ahụ. Ụzọ ọzọ bụ mmiri ozuzo zinc, ebe a na-etinye ntụ ọka zinc na ngwọta cyanide. Zinc na-ewepụ ọlaedo site na mgbagwoju anya ahụ, na-emepụta ọlaedo ọla, nke enwere ike ịchacha ma mee ka ọ dịkwuo mma.
3.5 Ọgwụgwọ Tailings
Nke fọdụrụ slurry mgbe gold mgbake bụ ọdụ. Ebe ọ bụ na ọdụ ahụ ka nwere ike ịnwe ụfọdụ cyanide na ihe ndị ọzọ na-emerụ ahụ, ọgwụgwọ kwesịrị ekwesị dị mkpa. A na-edobe ọdụdụ ahụ n'usoro mkpochapụ iji mebie cyanide fọdụrụnụ. Enwere ike nweta nke a site na ụzọ dị ka oxidation chemical ma ọ bụ ọgwụgwọ ndu. Mgbe detoxification gasịrị, enwere ike ikpochapụ ọdụ ahụ n'enweghị nsogbu.
4. Uru nke Oxidation Nrụgide - Usoro Cyanidation
4.1 Ọnụego mgbake ọla edo dị elu
Maka ọla edo na-emegharị ahụ, oxidation nrụgide - usoro cyanidation nwere ike nweta ọnụego mgbake ọla edo dị elu nke ukwuu ma e jiri ya tụnyere cyanidation ọdịnala. N'ọnọdụ ụfọdụ, ọnụego mgbake ọla edo nwere ike iru karịa 90%, ebe cyanidation ọdịnala nwere ike nweta naanị 30 - 60% maka otu ihe mgbake. Nke a bụ n'ihi na nrụgide oxidation nzọụkwụ na-atọhapụ ọla edo nke ọma na mineral sulfide, na-ekwe ka cyanide meghachi omume na ya nke ọma.
4.2 Ndakọrịta na mmanụ dị iche iche
Usoro a nwere ike ijikwa ọla edo dị iche iche na-emegharị ahụ, ma ha nwere nnukwu mineral sulfide ma ọ bụ ihe ndị ọzọ dị mgbagwoju anya. Ọ na-enye mgbanwe na nhọrọ ore maka ụlọ ọrụ ndị na-egwuputa ihe, ebe ọ bụ na ọ bụghị nanị nhazi ngwa ngwa - ores na-agwọ ọrịa.
4.3 Ọnụ - Ịrụ ọrụ na ogologo oge
Ọ bụ ezie na ntinye ego mbụ na ịmepụta nrụgide oxidation - cyanidation osisi dị oke elu n'ihi mkpa maka akụrụngwa pụrụ iche dị ka autoclaves, n'ikpeazụ, ọ nwere ike ịdị ọnụ - dị irè. Ọnụ ego mgbake ọla edo dị elu pụtara na enwere ike imepụta ọla edo karịa site n'otu ego ahụ, na-abawanye ego ha nwetara. Na mgbakwunye, usoro kwụsiri ike na-ebelata ohere nke mfu mmepụta n'ihi mmịpụta adịghị arụ ọrụ.
5. Nsogbu na Ngwọta
5.1 Nnukwu ego itinye ego
Owuwu nke oxidation nrụgide - osisi cyanidation chọrọ nnukwu ego ego ego. Ndị autoclaves, nke dị mkpa maka usoro oxidation nrụgide, dị oke ọnụ ịzụta na ịwụnye. Iji dozie ihe ịma aka a, ụlọ ọrụ ndị na-egwupụta akụ nwere ike ịtụle njikọ aka - azụmahịa ma ọ bụ nhọrọ ego ogologo oge. Ha nwekwara ike iduzi ọmụmụ ihe gbasara ike zuru ezu tupu itinye ego iji hụ na ike akụ na ụba nke ọrụ ahụ dị.
5.2 Ihe gbasara gburugburu na nchekwa
Cyanide bụ ihe na-egbu egbu nke ukwuu, na ntapu ọ bụla ma ọ bụ mkpofu na-ekwesịghị ekwesị nwere ike ịkpata nnukwu nsogbu gburugburu ebe obibi na nchekwa. Na nrụgide oxidation - usoro cyanidation, usoro nchekwa siri ike ga-adịrịrị. Nke a na-agụnye iji ntanye - akụrụngwa ihe akaebe, mechiri emechi - usoro loop maka mgbasa nke ngwọta cyanide, na nyochaa ọkwa cyanide mgbe niile na gburugburu ebe obibi. Maka ọgwụgwọ ọdụdụ, ekwesịrị iji teknụzụ detoxification dị elu rụọ ọrụ iji hụ na ọdụ ọdụ ahụ anaghị etinye ihe iyi egwu na gburugburu ebe obibi.
5.3 Nka na ụzụ mgbagwoju anya
Ọrụ nke nrụgide oxidation - usoro cyanidation chọrọ ọkwa dị elu nke nkà na ụzụ. Ndị ọrụ kwesịrị ka a zụrụ nke ọma n'ịrụ ọrụ autoclave, na-achịkwa okpomọkụ na nrụgide, na ịhụ na mgbakwunye kwesịrị ekwesị nke reagents na usoro cyanidation. Ụlọ ọrụ na-egwupụta akụ nwere ike itinye ego na mmemme ọzụzụ maka ndị ọrụ ha ma ọ bụ were ndị ọkachamara nwere ahụmahụ. Ha nwekwara ike guzobe mmekọrịta na ụlọ ọrụ nyocha iji na-aga n'ihu na mmepe teknụzụ kachasị ọhụrụ ma hụ na usoro a na-arụ ọrụ nke ọma.
6. Mmechi
Nrụgide oxidation - usoro cyanidation bụ ọganihu dị ịrịba ama n'ọhịa nke mmịpụta ọla edo, karịsịa maka ọla edo na-atụgharị. Ọ na-enye ọnụego mgbake ọla edo dị elu, ngbanwe maka ọla dị iche iche, yana ọnụ ahịa ogologo oge - ịdị irè. Otú ọ dị, dị ka nkà na ụzụ ọ bụla, ọ na-echekwa ihe ịma aka dị ka nnukwu ego ego, nchegbu gburugburu ebe obibi na nchekwa, na mgbagwoju anya nkà na ụzụ. Site n'ịkwado ihe ịma aka ndị a site na atụmatụ kwesịrị ekwesị, itinye ego na nchekwa na ọzụzụ, na mmepụta nkà na ụzụ na-aga n'ihu, nrụgide oxidation - usoro cyanidation nwere ike ịrụ ọrụ na-arịwanye elu na mmepe mmepe nke ụlọ ọrụ na-egwupụta ọla edo.
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