Kupindula kwa golide

Kupindula kwa golide

Zida za golide zotsutsana zimatha kugawidwa m'magulu atatu:
Mtundu woyamba ndi wokwera kwambiri wa arsenic, carbon, ndi sulfure ore wagolide.Mu mtundu uwu, arsenic okhutira ndi oposa 3%, carbon zili 1-2%, ndi sulfure zili 5-6%.Pogwiritsa ntchito njira wamba yochotsa golide wa cyanide, kuchuluka kwa golide kumakhala 20-50%, ndipo kuchuluka kwa Na2CN kumadyedwa.Ikalimbikitsidwa ndi umisiri woyandama, ngakhale kuti golide wokwera kwambiri angapezeke, mphamvuyi imakhala ndi zinthu zambiri zovulaza monga arsenic, carbon, ndi antimony.Zidzakhala ndi zotsatira pa sitepe yotsatira ya ndondomeko yochotsa golide.

Mtundu wachiwiri ndi miyala yokhala ndi golidi yomwe golide amakutidwa ndi mchere wa gangue ndi zonyansa zovulaza m'tinthu tating'onoting'ono komanso tinthu tating'onoting'ono.Mumtundu uwu, zitsulo za sulfide ndizochepa, pafupifupi 1-2%, ndipo zimayikidwa mu mchere wa gangue.Tinthu tating'ono tagolide tating'onoting'ono timapanga 20-30%.Njira zodziwika bwino zochotsera cyanide kapena njira zolemeretsa zoyandama zimagwiritsidwa ntchito pochotsa golide, koma kubweza golide ndikotsika kwambiri.

Mtundu wachitatu ndi miyala ya golide yokhala ndi ubale wapamtima pakati pa golide, arsenic ndi sulfure.Chikhalidwe chake ndi chakuti arsenic ndi sulfure ndizo zonyamulira mchere wa golide, ndipo zomwe zili ndi arsenic ndi zapakati.Mlozera wagolide wamtundu uwu wa ore pogwiritsa ntchito njira imodzi yochotsa golide wa cyanide ndiwotsika.Ngati golidi akulemeretsedwa ndi kuyandama, chiwongola dzanja chapamwamba chikhoza kupezeka, koma n'zovuta kugulitsa chifukwa chimakhala ndi arsenic yochuluka.

ukadaulo wamigodi

kusankha mankhwala

1. Golide mineralization ndi kulekanitsa

Njira zopezera mankhwala a migodi ya golide makamaka zimaphatikiza njira yamadzi ofunda ndi njira ya cyanide.Njira yosakanikirana ndi yakale kwambiri komanso yoyenera golide wonyezimira wonyezimira.Komabe, n’njodetsa pang’ono ndipo pang’onopang’ono waloŵedwa m’malo ndi nzeru.Pali njira ziwiri za cyanidation, kuyambitsa cyanidation ndi percolation cyanidation.

2. Zida zopangira mankhwala ndi golide

Njira yamankhwala imagwiritsidwa ntchito posankha miyala ya golide, makamaka njira yamlengalenga.Zida zomwe zimagwiritsidwa ntchito zikuphatikizapo chipangizo chosinthira ufa wa zinki, thanki yowotchera, ndi zina zotero. Chipangizo chosinthira ufa wa zinki ndi chipangizo chomwe chimalowetsa matope a golide kuchokera ku leachate ndi zinki ufa.

Tanki yowotchera leaching ndi chida choyambitsa slurry.Pamene ore tinthu kukula m'munsimu 200 mauna ndi ndende yankho ndi m'munsimu 45%, kuyimitsidwa akhoza kupangidwa kuonjezera ndende ya kusungunuka golide mu thanki adsorption ndi imathandizira leaching nthawi.