Cyanide Sodium Heap Leaching Project na wani Oxidized Zinare Ore a Senegal

Wurin hakar zinari a Senegal ba shi da daraja oxidized zinariya tama tare da darajar zinare na 2.49 g/t. An gudanar da binciken dakin gwaje-gwaje ta amfani da tsarin tsiri leaching. A sakamakon sigogi sigogi kamar tama barbashi size, iri da dosages na leaching jamiái, leaching lokaci, da kuma iri da dosages na karin oxidants a kan zinariya hakar da aka bincika. An ƙaddara mafi kyawun yanayin, samun ƙimar leaching na zinari na 89.57% da darajar zinari a cikin ragowar leaching na 0.26%. Waɗannan sakamakon suna ba da ingantaccen tushen fasaha don haɓaka ma'ana da amfani da wannan ma'adinai.

1. Kayayyakin Kaya

Matsayin gwal na ɗanyen tama shine 2.49 g/t, wanda shine babban abin da za'a iya murmurewa. Makin azurfa shine 4.26 g/t, tare da ƙarancin abun ciki. Babban abin ƙazanta a cikin ma'adinan shine SiO₂, sannan ƙananan ƙananan Al da Fe. Babban abin cutarwa shine arsenic, tare da darajar arsenic na 0.68%. Makin sauran abubuwa ba su da ɗanɗano kaɗan. Babban ma'adinan ƙarfe a cikin ma'adanin shine limonite, kuma ma'adinan sulfide suna da ƙarancin gaske, galibi pyrite. Ma'adinan gangue sune ma'adini, feldspar, da ma'adinan yumbu.

Wannan ma'adinin gwal wani ma'adinai ne mai ƙarfi mai ƙarfi tare da sassauƙan tsari, galibi a cikin nau'in ɓarna da ƙasa. Ƙididdigar man fetur ya nuna cewa yawancin pyrite a cikin ma'adinan yana wanzu a cikin nau'in hatsi na euhedral, wanda aka saka a cikin quartz, feldspar, da chlorite. The barbashi size ne in mun gwada da lafiya, kullum jere daga 0.02 zuwa 0.4 mm. Limonite yana bayyana a matsayin pseudomorph na pyrite ko colloidal limonite da aka kafa ta hanyar condensation na ferric hydroxide bayani gauraye da karamin adadin silicate lãka ma'adanai, cike da fasa na gangue ma'adanai. Ma'adini galibi yana kasancewa azaman ma'adini na chalcedony na metacolloidal, tare da mafi yawan girman barbashi daga 0.02 zuwa 0.15 mm. Feldspar yana cikin nau'in hatsi ko tarawa marasa daidaituwa, tare da girman barbashi na 0.02 zuwa 0.3 mm. Ma'adinan zinari a cikin wannan ma'adanin suna da ƙarancin ɗanɗano mai ɗanɗano, na zinare mai kyau na -0.001 mm.

2. Hanyoyin Gwaji

Danyen taman da aka niƙa zuwa wani ƙayyadadden ƙwayar ƙwayar cuta an zuba shi a cikin ganga mai siliki mai cike da gado. An daidaita rabon ruwa mai ƙarfi a 1.5: 1. An ƙara lemun tsami don daidaita ƙimar pH don zama mafi girma fiye da 11. da wani adadin adadin Sodium cyanide aka kara. An gudanar da leaching a cikin zafin jiki na wani lokaci. Bayan gwajin, an zubar da ɓangaren litattafan almara don rabuwa da ruwa mai ƙarfi. An yi nazarin abubuwan da ke cikin gwal a cikin ragowar leaching da haɗin gwal a cikin maganin da ke ɗauke da zinare, kuma an ƙididdige adadin leaching na zinariya.

3. Sakamakon Gwaji da Bincike

Dangane da halaye na albarkatun albarkatun ma'adinai, an kwatanta tsakanin tsarin gwaji guda biyu: laka gabaɗaya cyanidation leaching da tsibi leaching. Sharuɗɗan gwaji don cyanidation gabaɗaya-laka sune kamar haka: niƙa fineness na -0.074 mm 95%, ruwa-m rabo na 3:1. injin motsa jiki, da lokacin leaching na sa'o'i 24. Sharuɗɗan gwajin tudun leach kamar haka: Girman barbashi na -10 mm, rabo mai ƙarfi na 1.5: 1. da lokacin leaching na 72h.

Yin amfani da tsarin leaching, adadin leaching na gwal ya kasance 70.89%. Yin amfani da tsarin sinadarai na laka gaba ɗaya, an ƙara yawan leaching na zinare zuwa 74.05%. Idan aka yi la'akari da farashin samarwa gabaɗaya, an ɗauki tsarin tattara tarin tarin yawa a cikin gwaji don dawo da zinari.

4. Ƙarshe

(1) Taman gwal wani tama ne mai oxidized da aka samar ta hanyar yanayi, tare da darajar zinare na 2.49 g/t, galibi gwal mai kyau na -0.001 mm. Ma'adinan ya dace da magani ta hanyar leaching cyanidation.

(2) Ta hanyar gwaje-gwajen yanayin leaching, mafi kyawun ma'aunin tsarin leaching ɗin an ƙaddara kamar haka: girman ƙwayar ƙarfe na -20 mm, sodium Cyanide sashi na 2.0 kg/t, adadin calcium peroxide na 4.0 kg/t, da lokacin leaching na kwanaki 10. Ma'anar rabuwar da aka samu shine adadin leaching na zinari na 89.57% da darajar zinare a ragowar leaching na 0.26%.

A ƙarshe, abokin ciniki ya gane sakamakon gwajin mu. Bayan sadarwa tare da abokin ciniki, an aika samfurori, kuma an gudanar da jerin gwaje-gwajen fa'ida. Ta hanyar nazarin kwatancen, tsarin tafiyar da ya dace da ainihin halin da ake ciki a ƙarshe an keɓance shi don wannan aikin leken asiri.

A halin yanzu, aikin yana ci gaba da ƙarfi. A cikin 'yan watanni, za a kammala wani tsibi leaching shuka.

Aikin tsugunar da takin zinari mai iskar gas a Senegal ya taka rawar gani wajen bunkasa hako ma'adinan zinare a Senegal. Dukkanin tsarin wannan aikin, tun daga binciken gwajin fa'ida, ƙirar yadi, isowar kayan aiki, shigarwa da ƙaddamarwa, horar da ma'aikata, zuwa aikin injin leaching, yana da alhakin. United Chemical Masana'antu kuma ya kai matsayin samarwa.

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