Omume mmepụta nke ibelata oriri sodium cyanide site na iji ezi uche na-abawanye dose nke Calcium oxide

Okwu Mmalite

N'ebe a na-egwupụta ọla edo na ụlọ ọrụ mmepụta ihe. Cyanidation bụ usoro a na-ejikarị eme ihe maka mgbake ọla edo site na ọla. Otú ọ dị, elu oriri nke sodium cyanide ọ bụghị naanị na-abawanye ọnụ ahịa mmepụta kamakwa na-ebute ihe egwu gburugburu ebe obibi n'ihi nsị ya. Ịchọta ụzọ dị irè isi belata sodium cyanide oriri mgbe ị na-ejigide ma ọ bụ na-emeziwanye ọnụego mgbake ọla edo bụ ihe ịma aka dị mkpa maka ụlọ ọrụ ahụ. Otu ụzọ dị otú ahụ nke gosipụtara nkwa na omume mmepụta bụ mmụba ezi uche dị na ya na usoro onunu ogwu nke Osisi calcium. Edemede a ga-enyocha nkọwa nke omume mmepụta a, na-enyocha usoro ndị dị n'okpuru, atụmatụ mmejuputa, na nsonaazụ ndị a rụpụtara.

Ọrụ Calcium Oxide na Usoro Cyanidation

Mgbanwe pH

Calcium oxide, mgbe agbakwunyere na sistemu cyanidation, na-eji mmiri emeghachi omume iji mepụta calcium hydroxide (Ca(OH)_2). Mmeghachi omume a na-abawanye uru pH nke pulp. Na usoro cyanidation, idobe pH alkaline kwesịrị ekwesị dị mkpa. A elu pH gburugburu ebe obibi na-enyere aka igbochi hydrolysis nke sodium cyanide. Sodium cyanide (NaCN) nwere ike iji mmiri meghachi omume na gburugburu acidic ma ọ bụ nso na-anọpụ iche, na-ebute nguzobe nke hydrogen cyanide (HCN), gas na-agbanwe agbanwe na nke na-egbu egbu. Site n'ịbawanye pH na nso nso nke 10 - 11. A na-egbochi hydrolysis nke sodium cyanide, si otú a na-ebelata oriri na-adịghị mkpa.

Mmeghachi omume Chemical na adịghị ọcha

Ores na-enwekarị adịghị ọcha dị iche iche dị ka ígwè, ọla kọpa, na zinc. Ihe adịghị ọcha ndị a nwere ike imeghachi omume na sodium cyanide, na-emepụta ogige cyanide dị mgbagwoju anya ma na-eri nnukwu ego nke sodium cyanide. Calcium oxide nwere ike imeghachi omume na ụfọdụ adịghị ọcha ndị a. Dịka ọmụmaatụ, ígwè dị na ọla nwere ike ịdị n'ụdị ígwè oxides ma ọ bụ sulfide. Calcium oxide nwere ike imeghachi omume na ihe acidic emepụtara n'oge oxidation nke iron sulfide, na-ewepụ ha. Nke a na-ebelata ọnụ ọgụgụ nke acid dị na usoro ahụ, nke na-enyere aka ịnọgide na-enwe nkwụsi ike nke sodium cyanide. Ọzọkwa, calcium oxide nwere ike ịkpali ụfọdụ ion metal dị ka hydroxides. Dịka ọmụmaatụ, ions ọla kọpa (Cu^{2 +}) nwere ike imeghachi omume site na ions hydroxide sitere na calcium hydroxide iji mepụta ọla kọpa hydroxide (Cu(OH) _2). Mmeghachi omume mmiri ozuzo a na-ewepụ ions ọla kọpa na ngwọta, na-egbochi ha imeghachi omume na sodium cyanide ma belata oriri nke sodium cyanide.

Nkọwa Omume Mmepụta

Njirimara ore na ọnọdụ izizi

Ụlọ ọrụ mmepụta ebe a na-eme omume a na-edozi otu ụdị ọla edo - nke na-ebu mmanụ. Osisi ahụ nwere ụfọdụ ọdịnaya nke ọla edo, yana nnukwu mineral iron sulfide na adịghị ọcha ndị ọzọ dị ka ọla kọpa na zinc. Na mbụ, usoro cyanidation na-arụ ọrụ na oke oriri nke sodium cyanide. A na-edobe pH nke mkpụrụ osisi na gburugburu 9-9.5. na usoro onunu ogwu nke calcium oxide dị ntakịrị. Ọnụego mgbake ọla edo adịghịkwa n'ọkwa kacha mma.

Na-edozi usoro onunu ogwu nke Calcium oxide

Na ọkwa mbụ nke omume ahụ, ejiri nwayọọ nwayọọ mụbaa dose nke calcium oxide. Usoro ọgwụgwọ mbụ dị gburugburu 1 - 2 kg / t nke ore, a na-abawanye na 0.5 kg / t karịa usoro mmepụta ihe. Ka ọnụọgụ calcium oxide na-abawanye, pH nke pulp ji nwayọọ nwayọọ bilie. N'otu oge ahụ, a na-elebara anya nke ọma na mmetụta na usoro cyanidation, gụnyere ọnụego mmeghachi omume, ọnụego mgbake ọla edo, na oriri sodium cyanide.

Nleba anya na njikwa

N'oge omume mmepụta, a na-enyocha ọtụtụ isi ihe. A na-atụ pH nke pulp n'oge ọ bụla site na iji mita pH etinyere na eruba pulp. A na-ekpebi itinye uche nke cyanide sodium na ngwọta site na iji ụzọ titration. A gbakọrọ ọnụego mgbake ọla edo site na nyochaa ọdịnaya ọla edo dị na nri nri, ọdụ ọdụ na ngwọta ime. Na mgbakwunye, a na-enyocha oke nkesa nke ore ka ọ nwere ike imetụta mmeghachi omume kinetics. Dabere na data elere anya, e mere mgbanwe na usoro onunu ogwu calcium oxide na ihe ndị ọzọ na-arụ ọrụ. Dịka ọmụmaatụ, ọ bụrụ na pH bilitere ngwa ngwa ma gafere 11.5. E belatara ntakịrị usoro onunu ogwu calcium oxide iji gbochie mmetụta ọjọọ ọ bụla na usoro mmịpụta ọla edo.

Nsonaazụ na uru

Mbelata na oriri sodium cyanide

Ka usoro onunu ogwu nke calcium oxide na-abawanye ruo n'ogo kwesiri ekwesi (na-erute ihe dika 4-5kg/t nke ore na nke a), a hụrụ mbelata nke ukwuu na oriri sodium cyanide. Na mbụ, oriri sodium cyanide bụ ihe dịka 4 - 5 kg / t nke ore. Mgbe emechara usoro onunu ogwu nke calcium oxide, oriri sodium cyanide belatara ihe ruru 2 - 3 kg / t nke ore, na-anọchite mbelata ihe dịka 30% - 50%. Mbelata a na oriri sodium cyanide butere mbelata nke ukwuu na ọnụ ahịa mmepụta.

Mmelite na ọnụego mgbake ọla edo

N'ụzọ dị ịtụnanya, ọ bụghị naanị na oriri sodium cyanide belatara, mana ọnụego mgbake ọla edo kakwaara mma. Tupu mmezi nke calcium oxide onunu ogwu, mgbake ọla edo dị gburugburu 80% - 85%. Mgbe nkwalite ahụ gasịrị, ọnụego mgbake ọla edo mụbara ruo 85% - 90%. Ọganihu a na mgbake ọla edo nwere ike ịsị na njikwa kacha mma nke gburugburu cyanidation. Mmụba pH na mkpochapụ nke adịghị ọcha site na calcium oxide nyere aka mee ka ọnọdụ dị mma karịa maka mgbasa ọla edo.

Uru gburugburu na nchekwa

Site na mbelata oriri sodium cyanide, mmetụta gburugburu ebe obibi nke usoro cyanidation belatara nke ukwuu. Obere sodium cyanide n'ime ihe na-esi na ya pụta na-ebelata ọkwa nsi, na-ebelata ihe ọjọọ nwere ike ime na gburugburu ebe obibi. Ọzọkwa, mbelata nguzobe nke hydrogen cyanide gas n'ihi njikwa pH ka mma mekwara ka nchekwa nke usoro mmepụta maka ndị ọrụ dịkwuo mma.

mmechi

Omume mmepụta nke ịba ụba nke calcium oxide nke ọma egosila na ọ bụ ụzọ dị irè iji belata oriri sodium cyanide na usoro cyanidation. Site n'ịghọta ọrụ calcium oxide na nhazi pH na imeghachi omume na adịghị ọcha, na site na nlezianya nyochaa na njikwa n'oge usoro mmepụta, enwere ike nweta uru dị ukwuu. Uru ndị a gụnyere ichekwa ọnụ ahịa, ọnụego mgbake ọla edo ka mma, yana nkwalite gburugburu ebe obibi na nchekwa nchekwa. Omume a nwere ike bụrụ ntụaka bara uru maka ihe ọkụkụ na-egwupụta ọla edo ndị ọzọ na-eche ihe ịma aka ndị yiri ya ihu na ibelata oriri sodium cyanide. Nnyocha ọzọ na njikarịcha na mpaghara a nwere ike ime ka usoro cyanidation dịkwuo mma ma na-adigide n'ọdịnihu.