Kugadzirisa Kunyanya Kushandiswa Kwesodium Cyanide muGoridhe Mugodhi Leaching

Muindasitiri yemigodhi yegoridhe, iyo cyanidation process inoramba iri ibwe repakona rekuchera goridhe kubva mumatombo. Zvisinei, nyaya yokunyanyisa Sodium cyanide kushandiswa panguva Mugodhi wegoridhe haingokwidzi mari yekushandisa chete asiwo inokonzeresa njodzi dzakakura dzezvakatipoteredza nekuchengetedza. Iyi blog positi inoongorora zvikonzero, nzira dzekuona dzinoshanda, uye mhinduro dzinoshanda dzekugadzirisa dambudziko iri rakapararira.

Kunzwisisa Zvinokonzera

1. Ore Hunhu

• Complex Mineralogy: Ores ane yakaoma mineral maumbirwo anogona kukonzera yakakwirira cyanide kushandiswa. Sulfide minerals, semuenzaniso, inopindirana necyanide, ichigadzira thiocyanate makomisheni. Arsenopyrite uye pyrrhotite mune ore inogona kushandisa cyanide kuburikidza neoxidation uye kuomarara maitiro, ichiitsausa kubva pakutorwa kwegoridhe.

• Yakakwira Carbon Content: Carbonaceous ores ine organic matter inoshambadza gold-cyanide complexes, chiitiko chinozivikanwa se "preg-robbing." Izvi zvinomanikidza kuwedzera kwe cyanide kutsiva iyo yakarasika yekudhonza kunyatsoshanda, zvichikonzera Kunyanya kushandiswa.

2. Maitiro Ekushanda

• Kusakwana Kuvhiringidzika: Kusakwana kusanganisa panguva yekuita leaching kunotungamirira kusabatana kwakashata pakati pe ore ne cyanide solution. Izvi zvinotadzisa kuparara kwegoridhe uye zvinoita kuti vashandisi vawedzere imwe cyanide netarisiro yekuvandudza mitengo yekuchera.

• Suboptimal pH Levels: Cyanidation inonyanya kutsamira pH, ine yakanaka siyana kazhinji iri pakati pe10.5 ne11.5. A pH iri pasi peiyi siyana inoita kuti cyanide ishanduke kuita hydrogen cyanide gasi, ichideredza kuwanikwa kwayo kwekunyungudika kwegoridhe. Kune rimwe divi, yakawandisa pH inogona kukanganisa cyanide mhinduro, zvichibatsirawo mukuwedzera kushandiswa.

3. Mvura Yakanaka

• Mvura Yakaoma: Mvura ine huwandu hwakanyanya hwe calcium, magnesium, uye mamwe maion simbi inogona kuita ne cyanide, ichigadzira insoluble metal cyanide complexes. Aya maitiro anopedza cyanide mumushonga weleaching, zvichidikanwa kuwedzera cyanide.

• Yakanyungudika Oxygen Content: Nepo okisijeni yakakosha paiyo oxidation yegoridhe panguva yecyanidation, mazinga akawandisa anogona kukurumidza kukwirisa oxidation yecyanide pachayo, zvichikonzera kuparara kwayo nekukurumidza uye kuwedzera kushandiswa.

Maitiro Ekuona

1. Nguva dzose Sampling uye Analysis

Unganidza masampula emhinduro yeleaching pamatanho akasiyana ekuita, kusanganisira chikafu, chepakati, uye chekuburitsa mapoinzi. Ongorora aya masampuli eiyo cyanide concentration uchishandisa nzira dzakadai setitration, ion chromatography, kana colorimetric assays. Kuenzanisa iyo yakayerwa cyanide mazinga ane theoretical kukosha kunogona kubatsira kuona zvisirizvo maitiro ekushandisa.

2. Monitoring Process Parameters

Ramba uchitarisisa makiyi ekushanda ma paramita senge pH, tembiricha, kumhanya kweagitation, uye oxygen yemukati. Kutsauswa kubva kumhando dzakakwana kunogona kuratidza zvingangoitika zvinokonzeresa kunyanyisa kushandiswa kwecyanide. Shandisa otomatiki ekutarisa masisitimu anogona kukonzeresa maaramu kana ma paramita arasika kubva pamiganho yakatarwa.

3. Ore Characterization

Ita yakadzama mineralogical uye kemikari ongororo yeanouya ore batches. X-ray diffraction (XRD), scanning electron microscopy (SEM), uye atomic absorption spectroscopy (AAS) inogona kupa nzwisiso mukuumbwa kweore, zvichibatsira kufanotaura mashandisirwo ecyanide uye kugadzirisa maitirwo ekuchinja zvinoenderana.

Zvinoshanda Solutions

1. Ore Pretreatment

• Oxidative Pretreatment: Kune zvicherwa zvine sulfide zvicherwa, oxidative pretreatment nzira dzakadai sekugocha, pressure oxidation, kana bio-oxidation inogona kushandiswa. Aya maitiro anopwanya zvicherwa zve sulfide, kuderedza kuita kwavo zvakare ne cyanide uye kuvandudza goridhe kudhirowa kwegoridhe uku ichideredza kushandiswa kwecyanide.

• Kubviswa kweCarbon: Panyaya ye kabhonimatombo esimbi, kuburitsa simbi nekabhoni yakakangwa kana zvimwe zvinobvisa kabhoni zvinogona kubatsira kubvisa mhedzisiro yekubira goridhe. Izvi zvinobvumira cyanide kuti inyatsotarisa pakunyungudutsa goridhe pane kudyiwa nezvinhu zvine kabhoni.

2. Process Optimization

• Agitation uye Aeration Adjustment: Ita shuwa kubvongodza kwakaringana uye mazinga eeration kusimudzira kusanganisa yunifomu uye kufambisa kweokisijeni yakakwana. Ita zviyedzo zvepilot-scale kuona iyo yakakodzera kumhanyisa kumhanya uye aeration chiyero chemhando dzakasiyana ore uye leaching mamiriro.

• pH Kudzora: Isa otomatiki pH control masisitimu ayo anogona kunyatso gadzirisa iyo pH yemhinduro yeLeaching. Shandisa lime kana sodium hydroxide kuchengetedza iyo pH mukati meiyo yakakwana renji, kudzivirira kusvibiswa kwecyanide uye kuve nechokwadi chekunyungudika kwegoridhe.

3. Kurapa Kwemvura

• Kupfava: Bata nzira yemvura kuti ubvise kuoma-kukonzera ions. Ion exchange resin kana lime yakapfava inogona kushandiswa kukonzeresa calcium uye magnesium ions, kuderedza kupindira kwavo necyanide solution.

• Oxygen Management: Gadzirisa iyo oxygen inopa kune leaching maitiro. Shandisa masensa eokisijeni kutarisa uye kudzora iyo yakanyungudika yeokisijeni yemukati, kuve nechokwadi kuti yakakwana kune goridhe oxidation asi kwete yakawandisa kukonzera cyanide kuparara.

4. Reagent Management

• Cyanide Inotsiva: Ongorora kushandiswa kweimwe leaching reagents senge thiosulfate, thiourea, kana chloride-based solutions. Aya anotsiva anogona kupa yakaderera kukanganisa kwezvakatipoteredza uye ingangoita yakaderera mashandisirwo emitengo kana ichienzaniswa Sodium Cyanide, kunyanya kune mamwe marudzi ematombo.

• Reagent Recycling: Shandisa cyanide kupora uye kudzokorodza masisitimu. Tekinoroji senge ion exchange, electrowinning, uye membrane kusefa inogona kushandiswa kudzoreredza uye kushandisazve cyanide kubva kune leaching tailings, kuderedza kushandiswa kwese uye kugadzirwa kwemarara.

Nzira dzokudzivirira

1. Kudzidziswa kweVashandi

Ipa kudzidziswa kwakazara kune vashandi vemigodhi nekugadzirisa nezve cyanidation maitiro, mashandiro emidziyo, uye kugadzirisa. Vashandi vakanyatsodzidziswa vanogona kuona uye kugadzirisa matambudziko nekukasira, kuve nechokwadi chekuti nzira yekudzidzisa inofamba zvakanaka uye nemazvo.

2. Data Analytics uye Modelling

Shandisa maturusi e data analytics uye maitiro ekuenzanisa maitiro ekuongorora nhoroondo uye chaiyo-nguva data. Nekuona mafambiro uye hukama, vashandisi vanogona kufanotaura matambudziko angangove ane chekuita nekushandiswa kwecyanide uye kutora matanho ekuzvidzivirira.

3. Nguva Dzose Kuongorora uye Kuongorora

Ita nguva dzose mukati nekunze kuongororwa kweiyo cyanidation process. Aya maodhisheni anogona kubatsira kuona nzvimbo dzekuvandudza, kuve nechokwadi chekutevedzwa kwezvakatipoteredza nekuchengetedza mirau, uye kuchengetedza kushanda kwese kwekuita kwegoridhe leaching.

Mukupedzisa, kutaura zvakanyanyisa sodium cyanide kushandiswa mumigodhi yegoridhe kunoda nzira ine mativi akawanda anosanganisira kunzwisisa zvinokonzeresa, kushandisa nzira dzinoshanda dzekuona, kushandisa mhinduro dzakakodzera, uye kutora matanho ekudzivirira. Nekuita izvi, makambani emigodhi haangogone kuderedza mitengo chete asiwo anosimudzira kuchengetedzwa kwezvakatipoteredza kwemabasa avo ekuchera goridhe.