Njira ndi Njira Zochotsera Cyanide Pamwamba pa Sulfide Ores

Cyanidation leaching ndi njira yomwe imagwiritsidwa ntchito kwambiri pakugulitsa migodi ya golide. Komabe, cyanidation leaching michira nthawi zambiri amakhala ndi zovuta zazikulu. Zotsalira izi nthawi zambiri zimakhala ndi zochepa cyanides, golide ndi siliva wosatulutsidwa, komanso mchere wonyamulira monga chalcopyrite ndi pyrite. Pamwamba pa miyala ya sulfide m'mizere iyi amaletsedwa Sodium cyanide pa nthawi ya cyanidation. Ngakhale ore kalasi ndi otsika ndi the cyanide Kukhazikika sikokwera kwambiri, kuchuluka kwakukulu kwa ma tailings kumawapangitsa kukhala odetsa nkhawa kwambiri.

Pakalipano, pali njira zitatu zochiritsira zodziwika bwino za cyanidation leaching tailings: kutsegula kwa asidi, kutsegula kwa okosijeni, ndi mkuwa - mankhwala a mchere.

Njira Yoyambitsa Acid

Njira yotsegulira asidi imaphatikizapo kuwonjezera sulfuric acid kapena oxalic acid kuti ayambitse michira. Ngakhale njira iyi imatha kuyambitsa tailings, ili ndi zovuta zingapo. Choyamba, sachedwa kutulutsa mpweya wapoizoni komanso wowopsa wa hydrogen cyanide. Ngakhale mpweya wopezekanso wa hydrogen cyanide utha kugwiritsidwanso ntchito, opareshoniyo ili pachiwopsezo chachikulu. Kachiwiri, malo okhala acidic amatha kuwononga zida ndi mapaipi mosavuta, zomwe zimafunikira njira zothana ndi dzimbiri.

Njira Yoyambitsa Oxidant

Mu njira yotsegulira oxidant, hydrogen peroxide kapena hypochlorite amawonjezeredwa kuti ayambitse michira. Komabe, ndizovuta kuwongolera ndendende mlingo wa okosijeni. Kuchulukirachulukira pang'ono kumatha kuyimitsa miyala ya sulfide, kumachepetsa kuchira kwawo. Komanso, ma oxidants ambiri amawononga thupi la munthu, zomwe zingawononge thanzi la ogwira ntchito.

Mkuwa - Njira Yochizira Mchere

Njira yothetsera mchere wa mkuwa imagwiritsa ntchito mchere wa inorganic monga copper sulfate kapena iron salt kuyambitsa michira. Komabe, malamulo a chilengedwe ali ndi zofunikira zokhwima pakutulutsa ayoni amkuwa m'madzi onyansa. Kuphatikiza apo, ayoni amkuwa ndi othandizira a sphalerite ndi pyrite. Choncho, njirayi si yoyenera kwa cyanidation tailings yomwe ili ndi sphalerite ndi pyrite, ndipo sizogwirizana ndi chilengedwe.

Pomaliza, chithandizo cha cyanidation leaching tailings chimakhala ndi zovuta zambiri. Ngakhale kuti cyanide imakhala yochepa kwambiri, kukwera mtengo kwa ndalama ndi chitetezo chokhazikika ndi zofunikira za chilengedwe zimapangitsa kuti pakhale kofunika kufufuza njira zatsopano zothandizira, zogwira mtima komanso zokhazikika. Izi zingaphatikizepo kuphatikiza njira zomwe zilipo kale kapena kukhazikitsidwa kwa njira zatsopano zothetsera mavuto azachilengedwe ndi zachuma zomwe zimagwirizanitsidwa ndi izi.