Ọrụ Sodium Cyanide na Nchedo Alkali na Usoro Leaching Cyanidation

Okwu Mmalite

Cyanidation leaching bụ usoro a na-ejikarị eme ihe na ụlọ ọrụ na-egwuputa ihe maka iwepụta ọla edo na ọla ọcha site na ọla. N'ime usoro a, sodium cyanide na Nchekwa alkali na-ekere òkè dị mkpa. Ịghọta ọrụ ha dị mkpa maka ịkwalite usoro cyanidation, melite ọnụego mgbake ígwè, na ibelata ụgwọ ọrụ.

Ọrụ nke sodium Cyanide

Na-agbaze ọla edo na ọla ọcha

sodium cyanide (NaCN) na-eje ozi dị ka onye na-ahụ maka ịchafụ mbụ na usoro cyanidation. Isi ọrụ ya bụ igbari ọla edo na ọlaọcha n'ime ọla, na-ebute n'ịmepụta ogige cyanide metal soluble. Na ọnụnọ oxygen na mmiri, sodium cyanide na-emeghachi omume na ọla edo na ọlaọcha. Mmeghachi omume a na-atụgharị ọla n'ime ogige ndị nwere ike ịgbari ngwa ngwa na ngwọta mmiri, nke bụ isi maka Cyanidation leaching usoro.

Na-emetụta Ọnụego Leaching

Ịta nke sodium cyanide na leaching ngwọta nke ukwuu emetụta leaching ọnụego nke ọla edo na ọlaọcha. Dịka, n'ime ebe a kapịrị ọnụ, mmụba nke ntinye sodium cyanide na-eme ka ọ̀tụ̀tụ̀ nta ahụ dịkwuo elu. More cyanide ion pụtara ihe reactants dị maka mgbasa mgbasa, si otú na-akwalite guzobe nke metal cyanide complexes. Agbanyeghị, oke sodium cyanide dị elu na-eduga n'ịba ụba ego yana ihe egwu gburugburu ebe obibi. Na mgbakwunye, cyanide karịrị akarị nwere ike imeghachi omume na ihe ndị ọzọ dị na ọla, dị ka ụfọdụ sulfide ọla. Mmeghachi omume ndị a na-eri cyanide, na-ebelata irè ya maka igbari ọla edo na ọlaọcha.

Iji Ngwa ndị ọzọ na-emeghachi omume na Ore

Ore nwere ihe adịghị ọcha na ihe dị iche iche ma e wezụga ọla edo na ọlaọcha, sodium cyanide nwere ike imekọrịta ihe na ihe ndị a, na-emetụta usoro cyanidation. Dịka ọmụmaatụ, mineral ọla kọpa dị na ọla na-emeghachi omume na sodium cyanide iji mepụta ogige cyanide ọla kọpa, na-eri cyanide na usoro ahụ. Mmeghachi omume na mineral ọla kọpa dị iche iche dị iche na ọnụego na ngwaahịa. Ụfọdụ mineral sulfide ọla kọpa, dị ka chalcopyrite, na-emeghachi omume na cyanide n'ihu ikuku oxygen, na-emepụta cyanide ọla kọpa na sọlfọ - nke nwere ngwaahịa. Ọ bụghị nanị na nke a na-ebelata ego cyanide dị maka ịgbaze ọla edo na ọlaọcha kamakwa ọ nwekwara ike ịmepụta ihe ndị na-egbochi usoro mgbake ígwè na-esote.

Ọrụ Alkali Nchedo

Idobe nkwụsi ike nke ngwọta Cyanide

Otu n'ime isi ọrụ nke alkali nchebe bụ ịnọgide na-enwe nkwụsi ike nke ngwọta cyanide. Cyanide ion na ngwọta na-adịkarị mfe na hydrolysis, karịsịa na gburugburu acidic. N'oge hydrolysis, ion cyanide nwere ike ịmepụta hydrogen cyanide, nke na-egbu egbu na gas na-agbanwe agbanwe. Ọ bụghị naanị na nke a na-ebute mfu nke cyanide kamakwa na-ebute oke egwu na gburugburu ebe obibi na ahụike mmadụ. alkalis nchebe, dị ka calcium hydroxide (lime), sodium hydroxide, ma ọ bụ potassium hydroxide, na-abawanye uru pH nke ngwọta. Site n'ịkwalite pH, ha na-agbanwe nha kemịkalụ n'ụzọ na-ebelata hydrolysis nke cyanide, na-eme ka arụmọrụ nke usoro cyanidation dị irè na ibelata oriri cyanide n'ihi hydrolysis.

Mbelata Mmetụta nke mineral na-emerụ ahụ

Ore nwere ike ịnwe mineral ndị na-emebi usoro cyanidation, dị ka pyrrhotite. Ihe mineral ndị a na-emeghachi omume na cyanide na oxygen, na-eri ihe ndị a dị oké mkpa ma na-etinye aka na mgbasa nke ọla edo na ọlaọcha. Mgbe echebe alkali na-kwukwara n'oge ore-egweri usoro, ọ nwere ike oxidize ndị a na-emerụ minerals ma ọ bụ mee ka ha na-etolite precipitates, irè wepụ ha. Dị ka ọmụmaatụ, n'ihu wayo, pyrrhotite nwere ike oxidized, na-eme ka e guzobe ígwè hydroxide precipitates na sọlfọ - nwere ogige. Usoro a na-ebelata mmetụta ọjọọ nke mineral ndị na-emerụ ahụ na cyanidation, na-eme ka arụmọrụ nke ọla edo na ọlaọcha dịkwuo mma.

Na-edozi uru pH nke Pulp

Uru pH nke pulp n'oge usoro cyanidation bụ ihe dị oke egwu, a na-ejikwa alkali nchebe na-edozi ya na oke kachasị mma. Maka ọtụtụ usoro cyanidation, pH dị n'etiti 9 na 12 na-adịkarị mma. N'ime oke a, ngwọta cyanide na-anọgide na-eguzosi ike, na mgbasa nke ọla edo na ọlaọcha na-aga nke ọma. Ọ bụrụ na pH dị oke ala, cyanide hydrolysis na-aghọ ihe dị ịrịba ama, na-ebelata ọnụego leaching nke ọla edo na ọlaọcha. N'aka nke ọzọ, pH nke dị elu nwere ike imetụta ihe ndị dị n'elu nke ihe ndị na-emepụta ihe na mmeghachi omume mmeghachi omume nke mgbasa ọla edo na ọlaọcha. Enwere ike ịhọrọ ụdị alkalis dị iche iche nke nchebe dabere na njirimara ụfọdụ nke ore. A na-ejikarị lime eme ihe n'ihi ọnụ ahịa dị ala yana arụmọrụ dị mma n'ọtụtụ ọnọdụ. Mgbe ị na-eji wayo dị ka alkali nchebe, a na-agbakwụnyekarị ya n'ụdị mmiri ara ehi wayo maka njikwa ka mma nke mgbakwunye ego na usoro mmeghachi omume.

Mmekọrịta dị n'etiti sodium Cyanide na Nchedo Alkali

Ọrụ nke sodium cyanide na alkali na-echebe bụ njikọ chiri anya na usoro leaching cyanidation. Nchekwa alkali na-eme ka nkwụsi ike nke ngwọta cyanide sodium, na-enyere ya aka igbari ọla edo na ọlaọcha nke ọma. N'otu oge ahụ, ọnụnọ sodium cyanide na ngwọta na-emetụta ịdị irè nke alkali nchebe. Ngwaahịa mmeghachi omume nke sodium cyanide na ihe ndị ọzọ nwere ore nwere ike ịgbanwe pH ngwọta, na alkali na-echebe ga-anọgide na-edozi pH iji nọgide na-enwe ọnọdụ cyanidation kacha mma. Oke kwesịrị ekwesị nke sodium cyanide na alkali nchebe dị oke mkpa. Nnukwu alkali nchebe nwere ike ibute oke alkalinity, na-emetụta mmeghachi omume cyanidation na-adịghị mma. N'aka nke ọzọ, alkali na-echebe ezughị ezu, anaghị ekwe nkwa nkwụsi ike nke ngwọta cyanide, na-akpata ịba ụba cyanide oriri na mbelata arụmọrụ leaching. Ya mere, na n'ezie cyanidation usoro arụmọrụ, ọ dị mkpa iji nlezianya na-achịkwa dosages nke sodium cyanide na echebe alkali dị ka ore e ji mara na usoro chọrọ iji nweta kasị mma leaching results.

mmechi

N'ime usoro leaching cyanidation, sodium cyanide na alkali nchebe bụ ihe abụọ dị mkpa. Sodium cyanide na-ahụ maka igbari ọla edo na ọlaọcha, ebe nchekwa alkali na-arụ ọrụ dị mkpa n'ịkwado nkwụsi ike nke ngwọta cyanide, na-ebelata mmetụta nke mineral ndị na-emerụ ahụ, na imezi uru pH nke pulp. Ojiji kwesịrị ekwesị na nguzozi nke ihe abụọ a dị oke mkpa maka ịkwalite usoro cyanidation, meziwanye ọnụego mgbake nke ọla edo na ọlaọcha, na ibelata ọnụ ahịa mmepụta. Ndị na-arụ ọrụ na-egwuputa ihe kwesịrị iji nlezianya mụọ njirimara nke ore ma mee ule kwesịrị ekwesị iji chọpụta usoro ọgwụgwọ kachasị mma na ọnọdụ ọrụ nke sodium cyanide na alkali na-echebe iji hụ na arụ ọrụ nke ọma na-adịgide adịgide nke usoro cyanidation leaching.