
Usoro mwepụta ọlaedo Cyanidation ọdịnala nwere usoro atọ dị mkpa: ịchacha, ịsacha, na nnọchi (mmiri ozuzo).
1. Leaching
Leaching bụ usoro ebe ọla edo siri ike dị na ọla na-agbaze n'ime ikuku oxygen - nwere ngwọta cyanide. Ka ọ dị ugbu a, n'ihe gbasara usoro, akụrụngwa, njikwa, na ọrụ, usoro a aghọwo ihe dị mgbagwoju anya. Dị ka e kwuru na mbụ, mgbasa nke ọla edo na oxygen - ihe ngwọta cyanide nwere bụ n'ezie usoro mmebi nke electrochemical.
N'oge usoro ịcha mmiri, a na-eji ụdị ihe abụọ bụ isi: Cyanide na alkalis nchebe.
(1) Cyanide
N'ime ụlọ ọrụ mmepụta ihe, cyanide ndị a na-ejikarị eme ihe maka ịkụcha cyanide nke ọlaedo gụnyere potassium cyanide (KCN), Sodium cyanide (NaCN), calcium cyanide [Ca(CN)₂], na ammonium cyanide (NH₄CN).
Sodium cyanide bụ cyanide a na-ejikarị eme ihe n'oge a na-emepụta ya. Ọ bụ ntụ ọcha na-egbu egbu nke ukwuu, a na-etinyekarịkwa Sodium Cyanide nke a na-ere n'ime oghere ma ọ bụ blọk.
N'ihe gbasara mmepụta ihe, a na-ejikwa cyanide melt dị ka ihe na-eme ka mmiri ghara ịpụta. Ọ bụ ngwakọta nke a na-emepụta site na ịgbaze ngwakọta nke calcium cyanide, nnu, na coke n'ime ọkụ eletrik. E wezụga inwe 40% - 45% nke Ca(CN)₂ na NaCN, o nwekwara ụfọdụ ihe na-emerụ ahụ nke na-emerụ usoro cyanidation, dị ka sulfide na-agbaze, carbon, na ụfọdụ ihe na-adịghị agbaze. Uru ya bụ ọnụ ahịa dị ala ya, mana dose ya buru ibu, ihe dị ka ugboro 2 - 2.5 nke sodium cyanide . Iji wepụ mmetụta nke ihe ndị na-adịghị mma, a ga-eme ọgwụgwọ tupu oge eruo mgbe ejiri cyanide melt. Usoro ọgwụgwọ ahụ gụnyere oke nrụgide na ikuku ma ọ bụ itinye nnu lead kwesịrị ekwesị na ngwọta ahụ.
N'usoro iwu, naanị 0.5g nke sodium cyanide ka achọrọ iji gbazee 1g nke Au. Otú ọ dị, na mmepụta n'ezie, oriri nke cyanide bụ 20 - 200 ugboro nke usoro ihe ọmụma, ma ọ bụ ọbụna karịa. Ọnụ ego oriri na-adabere na ọdịnaya nke ihe ndị ọzọ dị na ore nwere ike imeghachi na cyanide.
2. Na-asacha
Ịsacha bụ usoro iji mmiri na-asa ahụ elu nke ore irighiri ihe na ọla edo gbazere n'etiti irighiri ihe iji nweta nkewa siri ike - nkewa mmiri iji nwetaghachi ọla edo - nwere ihe ngwọta mgbe ọ gbasasịrị.
3. Ndochi
Ndochi bụ usoro nke iji ntụ zinc belata ma mee ka ọlaedo dị na mmiri ọgwụ ahụ, si otú a na-enweta ọlaedo. Kemgbe narị afọ nke 20, mgbake ọlaedo site na mmiri ọgwụ cyanide na-ebu ụzọ gụnye ịsacha mmiri ọgwụ ahụ, wee mee ka mmiri ọgwụ ahụ dị ime dị ọcha. Mmiri ọlaedo sitere na mmiri ọgwụ a kọwara dị ime na-eji usoro nnọchi ntụ ntụ Zinc mgbe niile . Kemgbe afọ 1960, usoro "carbon - in - pulp" nke itinye carbon arụ ọrụ na mmiri ọgwụ ahụ amalitela ngwa ngwa. Site na nyocha gbasara ojiji nke ihe mgbanwe ion, usoro iji resin mgbanwe ion na-abanye ọlaedo site na mmiri ọgwụ cyanide ma ọ bụ mkpụrụ ọgwụ cyanide nwekwara uru bara uru dị mkpa. Emekwala ụfọdụ nnyocha na mwepụta nke mmiri ọgwụ cyanide. Mgbe etinyere sulfuric acid na mmiri ọgwụ cyanide, enwere ike iji isoamyl alcohol wepụ ọlaedo, ọnụego mwepụ na-abawanye ka mmụba nke mmiri ọgwụ sulfuric dị. Dịka ọmụmaatụ, mgbe a na-ewepụta ya na mmiri ọgwụ sulfuric 2mol/L, enwere ike ikewapụ ọlaedo site na ihe na-adịghị ọcha dịka arsenic na ígwè. Iji oxyalkoxy phosphate wepụta ọlaedo site na mmiri cyanate alkaline enwetala ihe ngosi dị mma maka mwepụta, iji sodium sulfite maka azụ - mwepụta enwetawokwa ezigbo nsonaazụ, wdg.
Na mmechi, usoro mmịpụta ọla edo cyanidation nwere ogologo akụkọ ihe mere eme na mmepe na-aga n'ihu. Ụzọ dị iche iche na reagents nwere àgwà nke ha na ngwa ndapụta, na ụlọ ọrụ na-eme nchọpụta mgbe niile na-emepụta ihe ọhụrụ iji melite arụmọrụ na akụ na ụba nke mmịpụta ọla edo mgbe ị na-ahụ maka nchekwa na nchekwa gburugburu ebe obibi.
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