Ọrụ nke Cyanidation na Carbon-in-Pulp (CIP) Usoro maka mmịpụta ọla edo.

A nakweere Cyanidation maka mmịpụta ọla edo n'ọtụtụ ebe n'ebe a na-egwu ọla edo n'ihi ngbanwe ya siri ike na ọla dị iche iche, ikike mmepụta ọla edo na saịtị, yana ọnụego mgbake dị elu. Otú ọ dị, n'ihi nchegbu nleba anya gburugburu ebe obibi, ogbunigwe na-agwọ nsị tupu ma ọ bụ mgbe ọ banyere n'ime mmiri iji nweta nkwụsị efu, ma ọ bụ jiri obere ala.cyanide ma ọ bụ ihe ndị na-anaghị amịpụta mmiri iji chebe gburugburu ebe obibi mpaghara. Isiokwu a na-akọwa ọrụ nke cyanidation na carbon-usoro maka mwepụta ọlaedo n'ime pulp. Ebumnuche ya abụghị naanị ịghọta usoro e si ewepụta ọlaedo kamakwa iwepụ mmetọ ma gaa n'ihu n'ịmepụta ebe a na-egwupụta ihe ndị na-adịghị ize ndụ na gburugburu ebe obibi.

Cyanidation maka mmịpụta ọla edo

Ihe ndị na-arụ ọrụ na-agụnye ntinye nke cyanide na oxygen, okpomọkụ, nha na ọdịdị nke ọla edo dị na ore, ntinye nke pulp, ọdịnaya nke slime, ihe nkiri dị elu nke ihe ndị dị na ọla edo, na oge nkwụsị.

Mgbe ịta nke cyanide dị ala, solubility nke oxygen dị oke elu, na nkwụsị nke ọla edo na-adabere na Ntụkwasị Cyanide. Mgbe mkpokọta cyanide dị elu, a na-ekpebi ọnụego mgbasa nke ọla edo naanị site na ntinye oxygen. N'ozuzu, ntinye nke cyanide sitere na 0.03% ruo 0.05%. Ịtinye ụfọdụ oxidants, ihe enyemaka ịchafụ, ma ọ bụ iwebata oxygen ozugbo na-eme ka mmetụta ahụ dịkwuo mma.

Dịka ọmụmaatụ, osisi carbon-in-pulp dochie ikuku na ikuku oxygen - gas bara ụba (nwere ikuku oxygen karịrị 90%) wee gbanye ya n'ime tankị mmiri. N'ihi ya, ọnụego leaching mụbara site na pasent 0.89. Onye na-atụgharị uche gbakwụnyere 98% ndu acetate n'ogo 0.1 n'arọ kwa ton nke ore na tank nke mbụ. N'ihi ya, ọkwa ọla edo nke ọdụdụ ahụ belatara site na 0.218 g/t ruo 0.209 g/t.

Ọnụego mgbasa nke ọla edo na ngwọta cyanide na-abawanye na ịrị elu nke okpomọkụ. Ọtụtụ mgbe, a na-edobe okpomọkụ n'etiti 10 ° C na 20 Celsius. N'okpuru 1.34 Celsius C, ngwọta na-egbuke egbuke. Ya mere, n'oge oyi, ndị na-ahụ maka mgbago ugwu na-ejikarị ọkụ ọkụ na-esi nri pipeline. N'elu 34.7 Celsius C, ihe ngwọta na-aghọ ọnọdụ mmiri mmiri, na gas na-agbapụkarị. Iji mee ka ọ kwụsie ike ma belata mfu kemịkalụ, a na-agbakwunye alkali kwesịrị ekwesị, nke a maara dị ka alkali nchebe, iji kwalite mmeghachi omume na ntụziaka nke hydrolysis na-adịghị ike.

Ọlaedo dị mma - ọka nwere nnukwu ebe ekpughere ya mgbe ọ gbasasịrị ma na-agbaze ngwa ngwa site na cyanidation. Na mgbakwunye, ụmụ irighiri ọla edo n'ụdị flakes, obere spheres na ndị nwere pores dị n'ime na-adị mfe igbari. Mgbe ntinye uche nke pulp dị ala, viscosity dị ntakịrị, na mgbasa ozi nke ion cyanide na oxygen na ngwọta nke elu nke ọla edo dị elu. N'ihi ya, ọla edo na-agbaze ngwa ngwa, ọnụ ọgụgụ leaching dị elu. Agbanyeghị, itinye uche dị ala ga-abawanye olu nke pulp, na-eduga n'ihe achọrọ akụrụngwa buru ibu yana oriri reagent dị elu. Ntinye uche nke pulp kwesịrị ekwesị bụ 40% - 50%. Mgbe ore nwere nnukwu slime ma nwee ihe ndị dị mgbagwoju anya, a ga-achịkwa itinye uche na 20% - 30%.

Ihe na-adịghị ọcha na-etolite ihe nkiri dị iche iche n'elu ihe ọla edo, na-emetụta ncha ọla edo. Ngwakọta mineral ndị ejikọtara na-emeghachi omume na oxygen, cyanide, na alkali, na-egbochi ntachi nke ọla edo. Ka oge leaching na-abawanye, ọnụ ọgụgụ leaching na-arị elu na njedebe ụfọdụ, mana ọnụego ahụ na-ebelata. Nke a bụ n'ihi na oke na nha nke ọla edo na-ebelata, anya dị n'etiti cyanide, ikuku oxygen gbazere, na ogige ọla edo na-agbasawanye, na nchịkọta nke adịghị ọcha na-etolite ihe nkiri na-emerụ ahụ. The "jamming" nke agitator na leaching tank, mere site elu itinye uche, obere fineness, ala ikuku olu, na nhazi mkpochapụ n'etiti ala impeller na ala nke tank, na-emetụtakwa leaching nke ọla edo. Mgbe tankị ndị ahụ nọ n'ebe a na-amụ cyanidation kwụsịrị, ndị ọrụ ji aka na-atụgharị igwe ahụ wee jiri egbe mmiri dị elu, egbe ikuku, na ogwe ígwè dị ogologo kpọchie pipeline. N'ikpeazụ, a chọpụtara na nkwụsị n'etiti impeller ala na ala nke tank ahụ ji okpukpu anọ karịa uru nkịtị. A doziri nsogbu ahụ ka emezigharịrị.

Usoro Carbon-in-Pulp (CIP) maka mmịpụta ọla edo

Ihe ndị na-arụ ọrụ gụnyere absorption nke Carbon arụ ọrụ, mwepụ na electrolysis, na mmeghari ohuru nke carbon.

Tupu iji carbon ọhụrụ, ọ dị mkpa iji "gbaa gburugburu ma wepụ ihe mkpofu" site na tupu egweri. Mgbe ị na-azụta carbon, ma ikike mgbasa ozi na ike kwesịrị ijide n'aka. Njupụta nke nkwakọ ngwaahịa kwesịrị ịbụ 0.50 kg / L - 0.55 kg / L, na urughuru nha kwesịrị ịbụ mgbe niile na edo, n'ozuzu 6 - 12 ntupu ma ọ bụ 6 - 16 ntupu. Ọdịnaya ash na ọdịnaya nke obere irighiri ihe ekwesịghị ịfe 3%. N'ime osisi carbon-in-pulp, nnukwu ọdịnaya nke carbon powdered mere ka ọkwa ọla edo nke mmiri ọdụ ahụ dị elu karịa ugboro 16 karịa nke nkịtị, na-ebute ọdịda ọla edo. N'ihi ya, a ghaghị dochie carbon ahụ kpamkpam.

Njupụta nke carbon na tankị adsorption na-abawanye na gradient. N'ịtụle ịka nká carbon, mmịpụta ugboro ugboro bara uru maka mgbake ọla edo. Osisi carbon-in-pulp gbanwere usoro mmịpụta carbon site na ụbọchị atọ ruo ụbọchị ọ bụla, mmepụta ahụ mụbara site na otu ụzọ n'ụzọ anọ. Mgbe tank ahụ tojuru ma carbon gwụ, ọla edo ga-efunahụ ya. Nke a na-ebutekarị site na mkpuchi nke carbon - retaining screen. Ekwesịrị iwepụ ihe mkpofu tupu oge eruo mgbe nkesa na hydrocyclone gasịrị. A na-eji ihuenyo cylindrical kwụ ọtọ dị ka ihe mkpuchi carbon. Enwere ike idozi nsogbu ahụ site na ibelata mkpokọta pulp ma ọ bụ njupụta nke carbon ala yana ịbawanye ụda ikuku nke ọwa ikuku n'akụkụ ihuenyo.

Mwepu nke carbon site na tankị mgbasa ozi ikpeazụ bụ ihe na-adịghị mma. Ihuenyo nchekwa ntupu 40 na ọdụ ọdụdụ agwakọta na-eje ozi dị ka ebe nlele dị oke mkpa. Ekwesịrị ka a na-enyocha ya ma na-echekwa ya ugboro ugboro iji hụ na ọ na-eguzosi ike n'ezi ihe. Iji belata ikuku carbon, a na-ejikarị mkpasu iwe ọsọ dị ala.

A na-eme desorption na electrolysis na ngwọta nke 1% sodium hydroxide na sodium cyanide n'okpuru nrụgide nke 0.35 MPa - 0.39 MPa, na-enweta desorption na 135 ° C - 160 ° C, nke dị n'elu isi ihe ngwọta. Ọla edo nke carbon siri ike erughị 50 g / t. Ugbu a, a na-etinye cyanide-free desorption na electrolysis n'ọtụtụ ebe.

Maka mmeghari carbon, a na-etinyekarị ya na 3% - 5% nitric acid ma ọ bụ hydrochloric acid maka 0.5-1 hour. Ndị ọrụ kwesịrị ịkpali ya obere oge. Mgbe o wepụsịrị ya na tank ahụ, a na-agbanye ya na mmiri iji wepụ ihe ngwọta acid leaching. Mgbe ahụ, a na-etinye ya na 1% sodium hydroxide iji kpochapụ acid fọdụrụnụ. N'ikpeazụ, a na-asa ya na 2 - 3 ugboro olu nke akwa carbon.