Mbelata oriri Sodium Cyanide na Leaching Concentrate Gold

Okwu Mmalite

Na ụlọ ọrụ na-egwupụta ọla edo, ndị usoro cyanidation a na-ejikarị eme ihe maka ịwepụta ọla edo na gold itinye uches. Sodium cyanide na-arụ ọrụ dị oke mkpa na usoro a ka ọ na-eji ọla edo eme ihe iji mepụta ogige cyanide ọla edo soluble, nke enwere ike ịhazi ya maka mgbake ọla edo. Otú ọ dị, elu oriri nke sodium cyanide ọ bụghị nanị na-ebuli ọnụ ahịa mmepụta ihe kamakwa na-ebulikwa nchegbu gburugburu ebe obibi n'ihi nsi nke cyanide. Ya mere, ịchọpụta ụzọ ndị dị irè iji belata sodium cyanide ojiji n'ime usoro ịhịa aka ọla edo nwere nnukwu uru maka ebumnuche akụ na ụba na gburugburu ebe obibi.

Ihe na-emetụta oriri sodium cyanide

Minerology nke Gold Concentrate

Ngwakọta nke ntinye ọla edo nwere mmetụta dị ukwuu na ya sodium cyanide oriri. Nri dị ka pyrite, pyrrhotite, chalcopyrite, na mineral sulfide ndị ọzọ nwere ike imeghachi omume na cyanide na oxygen n'oge ị na-eri nri. Dịka ọmụmaatụ, Pyrite nwere ike ime ka ọ bụrụ oxygen na cyanide, na-eduga n'ịmepụta ụlọ dị iche iche nke ígwè-cyanide ma na-eri cyanide na usoro ahụ. Ọzọkwa, mineral ọla kọpa nwekwara ike ime ka oriri cyanide dị ukwuu. Ọla kọpa na-etolite ogige cyanide kwụsiri ike, ma mgbe enwere ọdịnaya ọla kọpa dị elu na ngwọta leaching, ọ dị mkpa ịbawanye ntinye sodium cyanide iji nọgide na-arụ ọrụ ntanye ọla edo, na-abawanye ojiji cyanide.

Ọnọdụ nkuzi

pH Uru

pH nke slurry na-agbapụta bụ ihe dị mkpa. Cyanide dị n'ụdị dị iche iche na ọkwa pH dị iche iche. Na pH dị ala, cyanide nwere ike ịmepụta hydrogen cyanide, ihe na-agbanwe agbanwe na ihe na-emerụ ahụ. Iji gbochie nke a, a na-edobe pH nke sistemu ahụ dị elu, ọ na-abụkarị 10-11.5. Ma pH dị elu nke ukwuu nwere ike imetụta usoro ịhịa ahụ n'ụzọ na-adịghị mma, dị ka ibelata ọrụ nke ụfọdụ enzymes ma ọ bụ ime ka mmiri ozuzo nke ion ígwè, nke nwere ike imetụta arụmọrụ leaching na ịbawanye oriri cyanide.

Aeration na ikuku oxygen

Inye ikuku oxygen zuru oke dị mkpa maka oxidation ọla edo na imepụta ogige ọla-cyanide. Enweghị ikuku na-ezuru oke ma ọ bụ ikuku oxygen dị ala nwere ike belata mmeghachi omume nke leaching, na-ebute mmịpụta ezughị ezu ma nwee ike ịmanye mgbakwunye nke cyanide ọzọ iji nweta nsonaazụ ka mma. N'aka nke ọzọ, oke ikuku nwere ike iduga oxidation na-enweghị isi nke mineral ndị ọzọ na-etinye uche, na-ebulikwa oriri cyanide.

Usoro iji belata oriri sodium cyanide

Pretreatment nke Gold Concentrate

Ọgwụgwọ Oxidative

Ụzọ ọgwụgwọ oxidative nwere ike iwepụ ma ọ bụ gbanwee mineral ndị na-eri cyanide na ntinye ọla edo. Iri nri bụ usoro a na-ahụkarị, ebe ikpo ọkụ na ọnụnọ oxygen oxidizes mineral sulfide ma gbanwee mineral ndị nwere ígwè ka ọ bụrụ ụdị kwụsiri ike, na-ebelata mmeghachi omume ha na cyanide n'oge na-esote leaching. Agbanyeghị, ịsa nri nwere ihe ndọghachi azụ dị ka oriri ike dị elu yana mmetọ gburugburu ebe obibi nwere ike ime. Bio-oxidation, na-eji microorganisms dị ka Thiobacillus ferrooxidans, bụ ihe dị nro, ike na-arụ ọrụ nke ọma, na ebe obibi enyi. Ọ na-ahọrọ oxidizes mineral sulfide, na-ewepụ nke ọma ndị na-eri cyanide ma na-ebelata ihe achọrọ sodium cyanide na leaching.

Flotation maka mwepụ ọla kọpa

Mgbe mgbanaka ọla edo nwere nnukwu mineral ọla kọpa, enwere ike iji flotation mee ihe dị ka nzọụkwụ mbụ. Site n'ikewapụta mineral ọla kọpa na akụkụ dị nta nke nwere ọla edo, ọ na-ebelata nke ọma oriri cyanide site na nhazi mgbagwoju anya ọla kọpa-cyanide. Ntụkwasị obi bara ụba nke ọla edo nke fọdụrụ nwere ike nweta leaching cyanide site na iji obere sodium cyanide usoro.

Mmalite nke Ọnọdụ Leaching

Na-achịkwa pH

Ịkwado pH kwesịrị ekwesị na nke kwụsiri ike dị mkpa. A na-ejikarị wayo na-edozi pH nke slurry leaching. Ọ bụghị naanị na ọ na-ebuli pH iji gbochie cyanide hydrolysis kamakwa ọ na-enyere aka belata oriri cyanide site n'imetụta ọnụ ọgụgụ nke ọla kọpa na igbochi nhazi nke ụfọdụ ogige cyanide na-eri. Otú ọ dị, a ga-eji nlezianya chịkwaa ọnụ ọgụgụ nke wayo, n'ihi na oke wayo nwere ike ime ka mmiri ozuzo nke ion metal bara uru ma ọ bụ mụbaa viscosity slurry, na-egbochi mgbasa nke reactant. Nnyocha nnwale na-egosi na ịgbakwụnye ihe dị ka 1 - 2 kg / t nke lime iji dozie pH na gburugburu 10.5 - 11.5 na-enwetakarị nsonaazụ dị mma n'ibelata oriri cyanide ka ọ na-ejigide ọnụ ahịa leaching ọla edo dị elu.

Na-ebuli elu ikuku

Iji hụ na ịcha ọla edo na-arụ ọrụ nke ọma yana obere sodium cyanide, ọnụego ikuku chọrọ nkwalite. Ọtụtụ osisi cyanidation ọla edo na-eji obere nrụgide ikuku, enweghị mmanụ maka inye ikuku. Usoro dị ka ịwụnye mkpuchi obere oghere na njedebe nke ọkpọkọ na-enye ikuku iji mepụta ọtụtụ obere afụ ọnụ nwere ike ime ka mpaghara kọntaktị dị n'etiti oxygen na slurry leaching, na-eme ka ọrụ oxidation ọla edo na-ebelata ma na-ebelata oriri cyanide na-adịghị mkpa. Ịwụnye valvụ nlele iji gbochie ikuku ikuku na-eme ka usoro ikuku kwụsie ike. Ịmezi ọnụego ikuku dị ka njiri mara ihe na ọnọdụ ịhịa aka n'ahụ na-enyere aka ịnọgide na-enwe ezigbo ikuku oxygen na slurry, na-akwalite ntanye ọla edo na ibelata ojiji cyanide.

Iji ihe mgbakwunye

Ihe mgbakwunye dabere na ndu

Ịtinye ihe mgbakwunye ndị dabere na ndu, dị ka nitrate lead, tupu leaching cyanide nwere ike ibelata oriri sodium cyanide. ion Lead na-emeghachi omume na adịghị ọcha dị ka ion sulfide dị na mgbanaka ọla edo na-emepụta ihe na-adịghị edozi, na-ebelata nnyonye anya ha na usoro ịcha mmiri na oriri cyanide. Dị ka ihe atụ, na leaching ọla edo ores na elu sulfide ịnweta ọdịnaya, na-agbakwụnye 300 - 600 g / t nke lead nitrate tinyere alkali pretreatment maka 2 - 3 awa nwere ike ibelata sodium cyanide oriri site na 2500 - 3000 g / t na 1200 - 1500 g /t ma na-abawanye gold leaching 2% ọnụego.

Nhọrọ Lixiviants ma ọ bụ ihe mgbakwunye

Enwere ike iji ụfọdụ lixiviants ọzọ ma ọ bụ ihe mgbakwunye na cyanide iji belata oriri cyanide n'ozuzu ya. Glycine, nke na-adịghị egbu egbu, nke a na-emegharịgharị, na amino acid nke nwere ike imebi, bụ otu nhọrọ. N'ọnọdụ ụfọdụ, teknụzụ leaching dabere na glycine enwetala mbelata cyanide dị ịrịba ama ebe ọ na-ejigide ọnụego mgbake ọla edo yiri ụzọ cyanidation ọdịnala. Ịgbakwunye kpọmkwem surfactants nwekwara ike melite wettability nke ọla edo ahụ na mgbasa nke reactants na leaching slurry, nwere ike na-enyere aka ibelata sodium cyanide oriri ruo n'ókè ụfọdụ.

mmechi

Mbelata oriri sodium cyanide n'ime usoro ịchafụ ọla edo bụ ọrụ dị mgbagwoju anya ma dịkwa oke mkpa. Site n'ịghọta ihe ndị na-emetụta oriri cyanide na mmejuputa atumatu dị ka prereatment, na-ebuli ọnọdụ leaching, na iji ihe mgbakwunye, enwere ike nweta mbelata dị ukwuu na ojiji sodium cyanide. Nke a na-erite uru ụlọ ọrụ na-egwupụta ọla edo n'ụzọ akụ na ụba site n'ịbelata ọnụ ahịa mmepụta ma na-enyere aka belata ihe egwu gburugburu ebe obibi jikọtara na iji cyanide. A na-atụ anya na nyocha na ihe ọhụrụ na-aga n'ihu na mpaghara a ga-arụpụta nke ọma na gburugburu ebe obibi mmịpụta ọla edo usoro n'ọdịnihu.