Sodium cyanide mu Mulu Leaching: Chinthu Chofunika Kwambiri M'migodi ya Golide

Pamalo a migodi yamakono, Kuchuluka kwa Leaching yatuluka ngati njira yovomerezeka komanso yotsika mtengo yochotsera golide ku miyala yamtengo wapatali. Pakati pa zigawo zosiyanasiyana za ndondomekoyi, Cyanide, makamaka Sodium Cyanide (NaCN), imagwira ntchito yofunika kwambiri.

Kufunika kwa Sodium Cyanide mu Kuchotsa Golide

Ziwerengero zimasonyeza zimenezo sodium cyanide amagwiritsidwa ntchito pa 80% ya milandu Kutulutsa Golide njira. Kuchuluka kumeneku kwa ntchito kumatsindika kufunika kwake mumakampani amigodi. Mwachitsanzo, mumgodi ku Tanzania, pambuyo pa kukhazikitsidwa kwa Sodium cyanide monga wothandizira leaching, kusintha kodabwitsa kunawonedwa. Chiwopsezo cha kuchira kwa ore chinakwera kuchoka pa 60% mpaka 85%, ndipo zotulukazo zidakweranso kwambiri. Ziwerengerozi sizimangowonetsa mphamvu ya sodium cyanide m'njira yopindulira komanso kuwunikira gawo lake lofunikira pakukweza mitengo yobweza golide ndi kuchuluka kwake.

Njira ya Sodium Cyanide mu Milu Leaching

Munjira yothamangitsira milu, miyala yagolide yotsika kwambiri kapena michira yoyandama imawunjikidwa papepala lopangidwa mwapadera losatha kulowa. Kenako, yankho la sodium cyanide limapopera pa mulu wa ore mozungulira. Pamaso pa okosijeni (kawirikawiri wochokera mumpweya), sodium cyanide imachita ndi golide mu ore. Mankhwalawa amatha kufotokozedwa motere: 4Au + 8NaCN + O₂+ 2H₂O = 4Na[Au(CN)₂]+ 4NaOH. Kupyolera mu izi, golide amapanga chosungunuka chosungunuka, sodium aurocyanide (Na[Au(CN) ₂]), chomwe chimasungunuka mu yankho ndikutha kubwezeretsedwanso.

Ubwino Wogwiritsa Ntchito Sodium Cyanide mu Mulu Leaching

1. Kuchita Bwino Kwambiri: Monga momwe tawonetsera mu chitsanzo cha mgodi wa ku Tanzania, sodium cyanide imatha kusungunula golide kuchokera ku ores, zomwe zimapangitsa kuti pakhale kuwonjezeka kwakukulu. Kuchita bwino kwambiri kumeneku pochotsa golide kuchokera ku miyala yamtengo wapatali kumapangitsa kuti mulu wa leaching ndi sodium cyanide ukhale njira yabwino kumigodi yomwe ikanawonedwa ngati yopanda chuma.

2. Mtengo - kuchita bwino: Poyerekeza ndi njira zina zochotsera golide, kugwiritsa ntchito sodium cyanide mu mulu leaching ndikotsika mtengo. The chonse mtengo wa mulu leaching ndondomeko, kuphatikizapo mtengo wa sodium cyanide, nthawi zambiri m'munsi kuposa zovuta ndi mphamvu - kwambiri m'zigawo njira. Kukwera mtengo kumeneku ndi chifukwa chachikulu chomwe chikuthandizira kufalikira kwake m'makampani amigodi.

Zovuta ndi Zodzitetezera Zogwirizana ndi Sodium Cyanide

1. Toxicity: Sodium cyanide ndi poizoni kwambiri. Kutayikira kulikonse kapena kusagwira bwino kwa yankho la cyanide kumatha kukhala pachiwopsezo chachikulu ku chilengedwe komanso thanzi la anthu. Chifukwa chake, njira zoyendetsera chitetezo ndi njira zotetezera zachilengedwe ziyenera kukhalapo panthawi yosungira, kuyendetsa, komanso kugwiritsa ntchito sodium cyanide. Migodi imayenera kukhala ndi njira zosungiramo zotetezedwa bwino kuti cyanide isatayike komanso njira zochizira bwino za cyanide - zomwe zimakhala ndi zinyalala.

2. Kutsatira Koyang'anira: Chifukwa cha kawopsedwe kake, kugwiritsa ntchito sodium cyanide kumatsatira malamulo okhwima m'maiko ambiri. Makampani amigodi ayenera kutsatira malamulowa okhudza kasungidwe, kasamalidwe, ndi kutaya kwa cyanide. Izi zikuphatikiza kuyang'anira pafupipafupi kuchuluka kwa cyanide m'zinyalala ndikuwonetsetsa kuti akukwaniritsa miyezo yovomerezeka ya chilengedwe.

Pomaliza, sodium cyanide ndi chinthu chofunikira kwambiri pakupanga milu ya migodi ya golide. Kuchita bwino kwake komanso kukwera mtengo kwake - kumapangitsa kuti ikhale chisankho chokondedwa pochotsa golide ku ore otsika. Komabe, kawopsedwe wokhudzana ndi malamulowo amafunikira kusamaliridwa mosamalitsa ndikutsatira mosamalitsa kuti ntchito zamigodi zizikhazikika komanso zotetezeka.