Chithandizo cha Cyanide mu Golide Leaching Tailings

Kuchuluka kwa Cyanidation ndi Kuopsa kwa Cyanide

Cyanidation imagwiritsidwa ntchito kwambiri ndi migodi yambiri ya golidi padziko lonse lapansi ndipo ikhalabe yofala m'zaka zikubwerazi. Komabe, Cyanide ndi poizoni woopsa woipitsa. Kukhalapo kwake m'madzi otayira ndi mchira kumatha kukhudza kwambiri anthu komanso chilengedwe. Chifukwa chake, ndikofunikira kuwongolera zowononga izi.

Cyanide Leaching Process and Its By-products

Cyanide leaching atembenuza golide kukhala madzi - sungunuka cyanide complexes ndipo pano ndiyo njira yodziwika bwino komanso yothandiza pochotsa golide ku ore. Izi zimafuna kuchuluka kwa cyanide kuti apititse patsogolo kuchira kwa golide, kupanga cyanide - yomwe imakhala ndi zinyalala zamtundu wa michira ndi madzi. Cyanide yaulere, yoyambira ndi - mankhwala muzitsulo zazitsulo, imatengedwa kuti ndi mtundu wapoizoni kwambiri wa cyanide chifukwa ukhoza kubweretsa zovulaza ngakhale zotsika kwambiri. Mitundu ina ya cyanide imatha kusungunuka mosavuta kukhala cyanide yaulere pansi pamikhalidwe ya acidic.

Kufunika Kochizira Cyanide - yokhala ndi Michira

Kuchepetsa kwachilengedwe kwa cyanide m'miyendo kupita ku bio - mulingo wopanda vuto kumatenga nthawi yayitali. Chifukwa chake, ma cyanide okhala ndi michira ayenera kuthandizidwa asanatulutsidwe m'malo otetezedwa kuti apewe zotsatira zoyipa pamalo olandirira. Kuwonongeka kwa cyanide mu Golide leaching michira chakhala chimodzi mwazovuta zazikulu zomwe migodi ya golide imakumana nayo m'zaka makumi angapo zapitazi. Chifukwa chake, chithandizo choyenera cha cyanide mu michira ndikofunikira kuti tipewe kapena kuchepetsa zovuta zachilengedwe ndi thanzi.

Njira Zomwe Zilipo Zochizira Cyanide

Kwa zaka zambiri, njira zingapo zamoyo, zakuthupi, ndi zamakemikolo, komanso njira zoyeretsera kapena kubwezeretsanso cyanide, zapangidwa kuti zithetse mavuto a cyanide. Pakadali pano, njira zomwe zimagwiritsidwa ntchito kwambiri popanga mafakitale a cyanide ndi monga njira ya INCO, njira ya alkaline chlorination, ndi njira yoyatsidwa. Carbon njira, njira ya ozonation, njira ya hydrogen peroxide oxidation, ndi njira yobwezeretsa hydrogen cyanide. Njira za INCO ndi alkaline chlorination zimagwiritsidwa ntchito kuchotsa cyanide yokhala ndi kuchuluka kwakukulu koma sizingawononge kwathunthu cyanide. Kaboni woyambitsa amatha kuyamwa ndi kuphatikiza cyanide koma sangathe kuiwononga. Njira za ozonation ndi hydrogen peroxide oxidation zimagwiritsidwa ntchito pochiza cyanide yokhala ndi kuchuluka kochepa popanda kuipitsa mpweya wambiri, koma zimakhala zodula kwambiri. Kubwezeretsa hydrogen cyanide kumatha kuchepetsa kuchuluka kwa cyanide ndi ndalama koma sikukwaniritsa zofunikira pakubwezeretsa matope.

Backfilling Technology ndi Kafukufuku Wochotsa Cyanide

Ukadaulo wodzaza madzi ndi njira yabwino kwambiri kuti migodi idutse m'mipata ya zinthu, chilengedwe, ndi chitetezo. Komabe, zinthu zovulaza monga zitsulo zotsalira ndi zosungunulira mu golide - zotulutsa madzi ziyenera kukonzedwa bwino musanazitulutse kuti zisawonongeke pansi pa nthaka. Kafukufuku wokhudza kuchotsa cyanide wakhala akuyang'ana kwambiri pa madzi otayira m'mafakitale. Kafukufuku wokhudza kuchotsa cyanide mu golide - zotulutsa madzi, kuphatikizapo madzi otayira ndi zotulutsa madzi, akadali ochepa. Kapangidwe ka mchere wa golide ndi kovuta, ndipo mankhwala monga cyanide, Carbon Woyendetsa Ufa, ndi hydrogen peroxide zimawonjezeredwa ku njira yopangira zinthu, zomwe zimapangitsa kuti zinthu zomwe zili m'mafupa zikhale zovuta kwambiri. Cyanide yotsala yambiri m'mafupa imayamwa kwambiri pamwamba pa mchere, ndipo cyanide yochepa chabe ndi hydrolyzed complex cyanide yokha ndiyo ingalowe mu leachate. Chifukwa chake, ndikofunikira kufufuza njira zothandiza kwambiri zochotsera cyanide.

Kuvuta kwa CN⁻ Kuwola ndi Njira Yofufuza Zamtsogolo

Kuwonongeka koyenera kwa CN⁻ ndi njira yovuta. Pamafunika kuphatikizika kwa njira zingapo zopangira chithandizo chamankhwala ndikuganizira chuma chamankhwala. Kugwiritsa ntchito njira zophatikizira kuchotsa cyanide ndi njira yodalirika pakufufuza kwamtsogolo.