Ọrụ Calcium Oxide na Mwepụta Ọlaed na Sodium Cyanide

Okwu Mmalite

Gold cyanidation, makwaara dị ka cyanide leaching, bụ usoro a na-ejikarị eme ihe maka ịwepụta ọla edo site na ntụ ntụ. N'ime usoro a, sodium cyanide a na-arụ ọrụ iji gbazee ọla edo n'ime nkume, ebe ọ bụ na ọla edo n'onwe ya adịghị amị amị na cyanide. Otú ọ dị, ọnụnọ nke adịghị ọcha dị iche iche na gburugburu kemịkalụ nke ore nwere ike imetụta arụmọrụ na ọnụ ahịa nke usoro mmepụta ihe. Nke a bụ ebe Osisi calcium na-arụ ọrụ dị mkpa.

Na-edozi uru pH nke Pulp

Otu n'ime isi ọrụ nke calcium oxide na cyanidation ọla edo bụ ịhazi pH nke pulp ore. Mgbe a na-agbakwunye calcium oxide na mmiri, ọ na-emeghachi omume iji mee ka ntinye nke ion hydroxide dị na ngwọta, si otú a na-ebuli pH uru.

Na usoro cyanidation, ọ dị mkpa iji nọgide na-enwe ọkwa pH dị elu, nke na-adịkarị karịa 11. Nke a bụ n'ihi na sodium cyanide hydrolyzes na ngwọta mmiri. Ogo nke hydrolysis a metụtara uru pH nke ngwọta. Na pH dị elu, nha nha nke mmeghachi omume hydrolysis na-agbanwe iji belata mkpokọta nke cyanide hydrogen na ngwọta. Ebe ọ bụ na cyanide hydrogen na-agbanwe agbanwe ma nwee ike ịgbapụ na usoro ahụ, ịnọgide na-enwe pH dị elu na-enyere aka igbochi ọnwụ nke cyanide n'ụdị hydrogen cyanide gas. Nke a dị oke mkpa n'ihi na isi ihe maka ịcha ọla edo bụ ion cyanide, na mfu nke cyanide ọ bụla ga-eduga n'ịba ụba nke oriri. sodium cyanide na belata arụmọrụ nke Mwepụta ọla edo.

Na-egbochi hydrolysis nke Cyanide

Dị ka e kwuru n'elu, hydrolysis nke sodium cyanide nwere ike ime ka e nwee hydrogen cyanide, nke na-abụghị nanị mfu nke cyanide reagent bara uru kamakwa ọ na-ebute ihe ize ndụ gburugburu ebe obibi na nchekwa n'ihi nsị ya. Calcium oxide na-enyere aka igbochi mmeghachi omume hydrolysis a. Site n'ịbawanye pH nke ngwọta, ọ na-ebelata ntinye nke ion hydrogen dị maka mmeghachi omume na cyanide ion iji mepụta hydrogen cyanide. Nke a na-eme ka o doo anya na ọnụ ọgụgụ dị elu nke cyanide na-anọgide n'ụdị ion cyanide, nke dị mkpa maka nkwụsị nke ọla edo.

Iwepụ Mmetụta ọjọọ nke ụfọdụ ions

Ore na-enwekarị adịghị ọcha dị iche iche dị ka ọla kọpa na ion ígwè, nke nwere ike inwe mmetụta na-adịghị mma na usoro cyanidation ọla edo. Dịka ọmụmaatụ, ion ọla kọpa nwere ike iji cyanide meghachi omume iji mepụta ogige ndị dị mgbagwoju anya, si otú ahụ na-eri cyanide ma belata ọ dị maka mgbasa ọla edo. Ígwè ion, karịsịa ion ferric, nwekwara ike imekọrịta ihe na cyanide, na-akpụ ogige ferricyanide.

Calcium oxide nwere ike inye aka belata mmetụta ndị a. N'ime ala alkaline nke calcium oxide mepụtara, ụfọdụ n'ime ion metal ndị a nwere ike ịmalite ịmalite. Dịka ọmụmaatụ, ion ferric nwere ike iji ion hydroxide meghachi omume iji mepụta ferric hydroxide precipitate. Mmiri ozuzo a na-ebelata ntinye nke ion ígwè na ngwọta, na-egbochi ha iri cyanide ma na-etinye aka na usoro ịcha ọla edo.

Mmetụta ọjọọ enwere ike na pH dị elu

Ọ bụ ezie na calcium oxide bara uru n'ọtụtụ akụkụ nke usoro cyanidation, ma ọ bụrụ na uru pH dị elu (na-emekarị karịa 12), ọ nwere ike inwe mmetụta na-adịghị mma na mmịpụta ọla edo. Na ọkwa pH dị oke elu, calcium oxide nwere ike ime ka e guzobe oyi akwa nke calcium peroxide n'elu ihe ọla edo. Igwe oyi a na-eme ihe dị ka ihe mgbochi, na-egbochi njikọ kpọmkwem n'etiti ion cyanide na elu ọla edo, si otú a na-egbochi mgbasa nke ọla edo. Ya mere, ọ dị mkpa iji nlezianya na-achịkwa ọnụọgụ calcium oxide agbakwunyere iji hụ na a na-edobe pH na ọkwa kachasị mma maka mmịpụta ọla edo nke ọma.

mmechi

Na nchịkọta, calcium oxide na-arụ ọtụtụ ọrụ dị mkpa na usoro mmịpụta ọla edo site na iji sodium cyanide. Ọ na-edozi pH nke pulp ore, na-egbochi hydrolysis nke cyanide, ma na-enyere aka wepụ mmetụta ọjọọ nke ụfọdụ ion ígwè. Agbanyeghị, njikwa kwesịrị ekwesị nke pH dị mkpa iji zere mmetụta ọjọọ nwere ike na mmịpụta ọla edo. Ịghọta ọrụ ndị a nke calcium oxide nwere ike inye aka mee ka usoro cyanidation dịkwuo mma, melite arụmọrụ nke mmịpụta ọla edo, ma belata oriri nke sodium cyanide, nke na-abụghị naanị uru akụ na ụba kamakwa ọ na-emetụta gburugburu ebe obibi site na ibelata ntọhapụ nke ogige cyanide na-egbu egbu.