Kedu uru pH kacha mma maka Cyanide leaching?

Cyanide leaching abụrụla isi nkuku na mwepụta ọla edo na ọla ọcha sitere na mineral kemgbe mmejuputa ụlọ ọrụ mmepụta ihe na 1887. Usoro a dabere na nguzozi siri ike nke kemịkalụ dị iche iche na gburugburu ebe obibi, yana uru pH nke ngwọta pụtara dị ka oke dị oke mkpa.

Usoro kemịkalụ dị n'azụ pH na Cyanide Leaching

Cyanide, nke a na-ahụkarị n'ụdị Sodium Cyanide (NaCN) ma ọ bụ potassium cyanide (KCN), na-eje ozi dị ka ihe na-eme ka mmiri ghara ịpụta ìhè. Agbanyeghị, mmekọrịta ya na ọlaedo na ọlaọcha na-adabere na ọkwa pH. Cyanide dị na nguzozi ya na hydrogen cyanide (HCN), ihe na-egbu egbu ma na-agbanwe agbanwe. N'ebe acidic dị (pH dị ala), nguzozi kemịkalụ na-agbanwe gaa n'ịmepụta gas HCN. Nke a abụghị naanị na ọ na-akpata nnukwu ihe egwu nchekwa kamakwa ọ na-ebelata nnweta cyanide efu, nke dị mkpa maka ịgbaze ọlaedo na ọlaọcha.

Iji mee ka mwepụta ọlaedo na ọlaọcha dị irè , a ga-edebe ihe ngwọta ahụ n'ọnọdụ alkaline. Mgbe pH dị elu, cyanide na-anọgide n'ụdị ionic ya, na-enye ya ohere ịmepụta ihe mgbagwoju anya kwụsiri ike na ọlaedo na ọlaọcha. N'oge usoro mwepụta, a na-emepụta ion hydroxide, na-enyekwa aka na alkalinity nke ihe ngwọta ahụ.

Na-ekpebi oke pH kacha mma

Ọtụtụ nnyocha na ọrụ ụlọ ọrụ achọpụtala oke pH kacha mma maka ịkụ Cyanide . N'ozuzu, a na-ewere uru pH karịrị 10.5 dị ka ihe dị mkpa, ọtụtụ ọrụ na-achọkwa ịnọgide na-enwe pH n'etiti 11 na 12. Nke a bụ ihe kpatara ya:

• Ime Ka Ọlaedo Na-agbaze Kachasị Elu : Na pH dị n'ime oke a, a na-eme ka ọsọ nke ịgbaze ọlaedo ka mma. Ịhapụ oke a nwere ike ibute mbelata dị ukwuu na arụmọrụ mwepụta. Dịka ọmụmaatụ, ọ bụrụ na pH ada n'okpuru 10.5, nhazi nke gas HCN na-ebelata mkpokọta nke ion cyanide efu, na-ebelata mmeghachi omume na ọlaedo.

• Ibelata oriri Cyanide : Oriri Cyanide nwere njikọ chiri anya na ọkwa pH. Ọnụọgụ pH dị ala nwere ike ibute mmụba nke ojiji cyanide ka cyanide na-adịghị arụ ọrụ nke ọma n'ịmepụta ihe mgbagwoju anya. Site n'ịnọgide na-enwe pH dị elu, a na-ahụ na ngwakọta cyanide kwụsiri ike, na-ebelata oriri Cyanide na-enweghị isi.

• Ihe Ndị A Ga-atụle Banyere Nchekwa : Site n'echiche nchekwa, idobe pH n'elu 10.5 dị oke mkpa. Gas HCN na-egbu egbu nke ukwuu, ọbụna obere ego nwere ike ibute ọnwụ. Site n'ịchịkwa pH n'ime oke akwadoro, a na-ebelata mmepụta gas a dị ize ndụ, na-echebe ahụike na nchekwa nke ndị ọrụ na ebe a na-egwupụta ihe na ebe a na-ewepụta ihe.

Ihe ndị na-emetụta pH kacha mma

• Ihe mejupụtara Ígwè : Ọla dị iche iche nwere ike ịnwe ihe na-adịghị ọcha na mineral dị iche iche nke nwere ike imetụta pH kacha mma. Dịka ọmụmaatụ, Ígwè nwere nnukwu sọlfọ nwere ike ịchọ mgbanwe pH dịtụ iche, ebe ọ bụ na ihe ndị nwere sọlfọ nwere ike imeghachi omume na mmiri cyanide ma metụta gburugburu kemịkalụ dum.

• Okpomọkụ : Okpomọkụ nke usoro ịchacha ihe nwekwara ike imetụta pH kacha mma. Ka okpomọkụ na-agbanwe, ike ịchacha ihe nke oxygen na ọsọ nke mmeghachi omume kemịkalụ na-agbanwe. N'ozuzu, ka okpomọkụ na-abawanye, mmiri nke cyanide na-abawanye, ike ịchacha ihe nke oxygen na-ebelatakwa. Nke a nwere ike ịchọ obere mgbanwe na pH iji nọgide na-enwe ọnọdụ ịchacha ihe kacha mma. Agbanyeghị, a na-eme ọtụtụ usoro ịchacha ihe nke cyanide na okpomọkụ gburugburu (ihe dị ka 15 - 30 Celsius) iji zere oke ire ere cyanide na mfu oxygen.

Ụzọ maka njikwa pH

• Lime (CaO) na Caustic Soda (NaOH) : Ndị a bụ ihe ndị a na-ejikarị eme ihe maka ịhazi na idobe pH na cyanide leaching. Lime, mgbe etinyere ya na mmiri, na-emepụta calcium hydroxide, nke na-emeghachi omume na ihe ndị dị na acidic dị na ngwọta ahụ iji mee ka pH dịkwuo elu. A pụkwara iji Caustic soda (NaOH), ntọala siri ike, bulie pH ngwa ngwa. Nhọrọ dị n'etiti ha dabere na ihe ndị dị ka ọnụ ahịa, nnweta, na ihe achọrọ kpọmkwem nke ọla a na-emepụta.

• Ihe mmetụta pH : Iji hụ na njikwa pH ziri ezi, ọrụ igwu ala nke oge a na-adabere na ihe mmetụta pH dị elu. Ihe mmetụta ndị a nwere ike inyocha pH nke ngwọta mmiri mmiri mgbe niile ma nye data oge. Dabere na data a, ndị ọrụ nwere ike ịgbanwe mgbakwunye nke ihe ndị na-achịkwa pH iji nọgide na-enwe oke pH kacha mma.

N'ikpeazụ, uru pH kachasị mma maka cyanide leaching dị na nso nke 11 - 12. A na-ekpebi uru a site na ngwakọta nke mmeghachi omume kemịkalụ, ihe nchekwa chọrọ, na mkpa maka mmepụta ọla edo na ọlaọcha dị mma. Site na iji nlezianya na-achịkwa pH na paramita ndị ọzọ, ụlọ ọrụ ndị na-egwupụta akụ nwere ike ịbawanye mgbake nke ọla dị oké ọnụ ahịa ma na-ebelata ihe ize ndụ gburugburu ebe obibi na nchekwa.