Ndi Mtundu Wanji Wa Ore Woyenera Pa Kutulutsa kwa Cyanide Heap?

Cyanide heap leaching ndi njira yomwe imagwiritsidwa ntchito kwambiri pantchito yochotsa golide pokonza mitundu ina ya ores. Kumvetsetsa mawonekedwe a ores oyenerera njirayi ndikofunikira kuti golide abwezeretse bwino.

1. General Kugwiritsa Ntchito: Low - kalasi Ores

Njira yochotsera miyala yamtengo wapatali ya Cyanide nthawi zambiri imakhala yoyenera pochiza miyala yamtengo wapatali yagolide yochepa, makamaka miyala yamtengo wapatali ya oxide yochepa . Miyala yambiri yochotsera miyalayi ndi miyala yamtengo wapatali ya pamwamba. Popeza kukula kwa tinthu tating'onoting'ono ta miyala yamtengo wapatali mu njira yochotsera miyala yamtengo wapatali, kuyanjana pakati pa miyala yamtengo wapatali ndi chinthu chochotsera miyala yamtengo wapatali ya cyanide ndi kofooka. Zotsatira zake, kuchuluka kwa miyala yamtengo wapatali ya golidi sikokwera kwambiri ngati njira zina zochotsera miyala yamtengo wapatali, zomwe zimapangitsa kuti igwiritsidwe ntchito makamaka ku miyala yamtengo wapatali pomwe mtengo wake ukhoza kusungidwabe. Miyala yamtengo wapatali ya golide yoyenera kuchotsa miyala yamtengo wapatali ya cyanide nthawi zambiri imakhala pakati pa 1.0 - 3.0 g/t, ndipo golide wokha ndi woposa 3.0 g/t.

2. Makhalidwe Opangidwa ndi Ore

2.1 Makhalidwe a Gold Particle

• Tinthu ta Golide tooneka ngati Talata : Kukula kwa tinthu ta golide tomwe timayikidwa mu miyala yoyenera ndi tabwino kapena tathyathyathya. Kapangidwe kameneka kamapangitsa kuti golide achotsedwe mosavuta ndi cyanide. Tinthu ta golide tooneka ngati tathyathyathya kapena tathyathyathya tingagwirizane bwino ndi chinthu chochotsa cyanide, zomwe zimathandiza kuti golide asungunuke panthawi yochotsa mulu. Mwachitsanzo, mu miyala yosungunuka yomwe imafalikira, golide nthawi zambiri amapezeka mu tinthu tating'onoting'ono tomwe timagawidwa mu miyala yonse, zomwe zimathandiza kuti cyanide ichotsedwe.

2.2 Porosity ndi Permeability

• Ma Ore Otayirira, Okhala ndi Mabowo, ndi Otha Kulowa : Ma Ore ayenera kukhala otayirira, olowa, komanso otha kulowera chifukwa cha okosijeni ndi kusinthasintha kwa nyengo. Makhalidwe amenewa ndi othandiza kuti yankho la cyanide lilowe mu mulu wa miyala. Pamene yankho la cyanide likhoza kufika bwino ku mchere wokhala ndi golide, kuyamwa kumatha kuchitika. Ma Ore ngati omwe akhala akuwonongeka kwa nthawi yayitali nthawi zambiri amakhala ndi kapangidwe ka mabowo, zomwe zimathandiza kuti yankho la cyanide lilowemo ndikukhudza tinthu ta golide mkati.

• Miyala Yokhala ndi Golide Wopezeka Poiphwanya : Pa miyala yomwe ili ndi mabowo ochepa poyamba, golide amatha kuonekera poiphwanya. Iyi ndi njira yofunika kwambiri yokonzekera musanachotsere mulu wa cyanide. Poiphwanya, mapangidwe amkati mwa golide amasweka, zomwe zimapangitsa kuti chotulutsira cyanide chipeze golide. Miyala ina yolimba yokhala ndi golide wotsekedwa mkati imatha kukonzedwa motere kuti ikhale yoyenera kuchotsa mulu wa miyala.

2.3 Chemical Composition

• Zinthu Zochepa za Asidi ndi Zinthu Zosagwira Ntchito : Mcherewu uyenera kukhala ndi zinthu zosachepera asidi komanso zinthu zosachepera zomwe zingagwirizane ndi cyanide. Zinthu zosachepera asidi kapena zinthu zogwira ntchito zimatha kudya chinthu chotulutsa cyanide. Mwachitsanzo, ngati pali mchere wambiri wa asidi mumchenga, zimagwirizana ndi cyanide, zomwe zimachepetsa kuchuluka kwa cyanide komwe kumapezeka kuti kuchotsedwe golide ndikuchepetsa kugwira ntchito bwino kwa njira yochotsera cyanide mulu.

• Zinthu Zosakoka Golide Kapena Zoyambitsa Kugwa : Mcherewu suyenera kukhala ndi zinthu zomwe zimakoka kapena kugwetsa golide wosungunuka. Ngati zinthu zotere zilipo, zimatha kulepheretsa kutulutsa golide panthawi yochotsa golide mu cyanide heap, zomwe zimachepetsa kuchuluka kwa kubweza golide. Mwachitsanzo, miyala ina yolemera mu kaboni imatha kukoka golide wosungunuka, zomwe zimalepheretsa kuti ipitirize kukonzedwa kuti ibweze golide.

3. Mitundu Yodziwika ya Ore

3.1 Mwala Wopatsira Oxidized

Mafuta opangidwa ndi okosijeni ndi oyenera kwambiri kukhetsa mulu wa cyanide. Mu ore awa, golidi amagawidwa mofanana mumkhalidwe wabwino kwambiri mkati mwa oxidized rock matrix. Njira yopangira makutidwe ndi okosijeni nthawi zambiri imapangitsa kuti miyalayi ikhale yochuluka kwambiri, ndipo golide wonyezimira bwino amatha kupezeka mosavuta ndi cyanide solution. Mwachitsanzo, m'malo ena agolide - okhala ndi miyala yamchenga yomwe yakhala ikukumana ndi nyengo yayitali komanso oxidation, golideyo amafalitsidwa mumchenga, ndipo cyanide mulu wa leaching amatha kuchotsa golideyo.

3.2 Sulfide Ore yokhala ndi Golide Osagwirizana Kwambiri

Mafuta a sulfide omwe golide sakhala limodzi ndi mchere wa sulfide amathanso kuthandizidwa ndi mulu wa cyanide leaching. Mu miyala yotereyi, golidi samamangirizidwa mwamphamvu ku zigawo za sulfide. Mwala ukachulukidwa - wothiridwa ndi cyanide, cyanide imatha kusungunula golide popanda kukhudzidwa kwambiri ndi mchere wa sulfide. Komabe, ngati golidiyo amagwirizana kwambiri ndi mchere wa sulfide, sulfide angafunikire kukonzedwa kale (monga kuotcha kapena bio-oxidation) kuti golideyo apezeke potulutsa cyanide.

3.3 Kusungitsa Golide wa Vein kapena Placer Gold Deposit yokhala ndi Tinthu tating'ono ta Golide

Madipoziti agolide amitsempha kapena ma depositi a golide okhala ndi tinthu tating'ono ta golide kapena gawo lalikulu la tinthu tagolide tating'onoting'ono ndi oyenera kukhetsa mulu wa cyanide. Tinthu tating'ono ta golide tili ndi malo okulirapo omwe amalumikizana ndi yankho la cyanide, lomwe limalimbikitsa kutulutsa. M'mitsempha ya golide, ngati golideyo ali ndi mawonekedwe owoneka bwino m'mitsempha, ndipo thanthwe lokhala ndi mitsempha lili ndi porosity yoyenera komanso permeability, cyanide mulu leaching ukhoza kukhala njira yothandiza yochotsa. Madipoziti a golide oyika, pomwe golidiyo adawonongeka ndikuwonongeka kukhala tinthu tating'onoting'ono, amathanso kukonzedwa pogwiritsa ntchito njirayi.

Pomaliza, cyanide heap leaching ndi yoyenera kwambiri kwa ore otsika omwe ali ndi mawonekedwe ake komanso mawonekedwe ake, kuphatikiza golide wopangidwa bwino, porosity yoyenera, komanso kusowa kwa zinthu zosokoneza. Pomvetsetsa zofunikira za ore izi, ntchito zamigodi zitha kupititsa patsogolo kugwiritsa ntchito mulu wa cyanide leaching kuti ukhale wogwira mtima komanso wokwera mtengo - kukumba golide wogwira mtima.