Nā ʻenehana koʻikoʻi no ka hoʻopau ʻole ʻana i ke koena o ke gula concentrate cyanide

ʻO ke kaʻina hana cyanidation no ka unuhi gula, me ka mōʻaukala o 100 mau makahiki, ke kū nei i ka hana gula o kēia manawa. Loaʻa kona kaulana ma muli o kona maʻalahi a me ka wikiwiki o ka hoʻōla gula kiʻekiʻe. Eia naʻe, hoʻopuka kēia kaʻina hana i ka nui o nā hue gula. Ke piʻi nei ka hopena o nā koena cyanide mai nā mea gula i hoʻohuihui ʻia i kēlā me kēia makahiki. Hōʻike nā helu helu e hoʻopuka ana ka ʻoihana gula aupuni ma kahi o 80 miliona a 100 miliona tone o nā koena cyanide i kēlā me kēia makahiki.

ʻO ka hōʻiliʻili lōʻihi ʻana o kēia mau koena cyanide e hoʻoulu i nā pilikia he nui. ʻO ka mea mua, noho ia i kahi ʻāina nui. ʻO ka lua, hiki i nā cyanides ʻawaʻawa loa i loko o nā koena ke hoʻokuʻu i nā kinoea ʻawaʻawa a hana i ka wai hoʻoneoneo waikawa. Eia kekahi, hiki i nā ion metala like ʻole ke hoʻohaumia i nā kino wai a me ka lepo a puni ma o ka wai ʻili a i ʻole ka wai honua, e hoʻoweliweli ana i ke olakino kanaka. ʻO ka mea kupanaha, aia nā koena cyanide mai nā mea gula i hoʻohuihui ʻia i nā kumuwaiwai waiwai e like me Cu, Pb, Zn, Fe, Au, S, a me Si e waiho mau ana ma lalo o ka hoʻōla ʻia. No laila, ʻo ka hoʻokaʻawale palekana ʻana i nā ʻāpana ʻawaʻawa, ka hoʻokaʻawale pono ʻana a me ka hoʻōla ʻana i nā kumuwaiwai waiwai, a me ka hoʻokō ʻana i ka hoʻohana nui ʻana o nā tailings de-cyanided ua lilo i mau mea nui a me nā pilikia noiʻi honua.

United Chemical Co., Ltd.'s Solution: A Holistic Project

I ka pane ʻana i kēia mau pilikia, United Chemical Co., Ltd. ua hoʻomaka i ka papahana "Nā noiʻi a me ka hoʻohana ʻana i nā ʻenehana koʻikoʻi no ka hoʻokuʻu ʻole ʻana a me ka hoʻohana ʻana i nā kumuwaiwai o nā koena Cyanide mai Gold Concentrates".

Gradient - Manaʻo De - cyanidation a me Flotation Recovery

Ua ʻae ʻia ka "ʻenehana hou no ka Gradient - Controlled De - cyanidation and Flotation Recovery of Valuable Elements" no ka hoʻihoʻi piha ʻana iā Cu, Pb, a me Zn mai nā huelo cyanidation gula. ʻO ka hopena, ua hoʻokumu ʻia nā concentrates kepau a me nā concentrates keleawe.

Pyrite Interface Activation and Combined Processing for Iron and Gold Recovery

A laila, ua hoʻokō ʻia ka "New Technology for Pyrite Interface Activation and Combined Mineral Processing and Metallurgy for Iron and Gold Recovery". Ua hoʻokaʻawale maikaʻi kēia ʻenehana a hoʻihoʻi hou iā Fe a me Si mai nā huelo flotation de-cyanidated, me ka hāʻawi ʻana i nā ʻeke sulfur concentrates a me nā huelo silika kiʻekiʻe.

ʻAka Sulfuric a me ka Iron Pellet Production

Ua ho'ohana 'ia ka sulfur concentrates no ka hana 'ana i ka waikawa sulfuric concentrated ma o ka ho'omo'a 'ana i ka oxygen. Ua hoʻopalapala ʻia ka sulfur slag i kālua ʻia. Ma hope mai, ua hoʻohana ʻia ka "High - Temperature Iron - Gold Separation Technology" e hana i nā pellet hao a me ka lepo gula i hoʻonui ʻia me Cu, Pb, a me Zn.

Kiʻekiʻe - Silicon Tailings Recycling

ʻO ka "ʻenehana hou no ka Phase - Hoʻololi Hoʻoponopono a piha - Component Recycling of High - Silicon Tailings" i hiki ai ke hoʻololi i nā huelo silika kiʻekiʻe i loko o ka ʻano ʻEulopa.

Nā Kūlana ʻenehana a me ka noiʻi

Ua hoʻoponopono kēia pāhana i nā "paʻakikī ʻehā" pili i nā koena cyanide mai nā koina gula: hoʻomaopopo pono i nā mea ʻawaʻawa, hoʻoponopono a hoʻokaʻawale pololei i kā lākou mau ʻano, hoʻihoʻi i nā mea waiwai, a me ka hana hou ʻana i nā huelo. Ua hoʻokomo i kahi ala interdisciplinary hou, hoʻohui i ka hoʻoili mineral, metallurgy, a me ka ʻepekema kaiapuni. Ua holo ka noiʻi i ke kaulahao holoʻokoʻa, mai ka wehe ʻana i nā kumu ʻepekema a hiki i ka hoʻomohala ʻana i nā ʻenehana hoʻomalu a me ka hana ʻana i nā hōʻikeʻike ʻenekinia.

Ma ke alo o ka ʻepekema a me ka ʻenehana, ua hōʻike ʻo ia i ke ʻano o nā ʻano mea ʻawaʻawa i loko o ka cyanide - loaʻa nā ʻōpala pōʻino loa. Ma ka pae noi, ua hoʻomohala ʻia nā ʻenehana no ka dissociation palekana a me ka hoʻokuʻu paʻa ʻana o nā mea ʻawaʻawa, ka hoʻohui ʻia ʻana o nā mea waiwai, a me ka hoʻohana kiʻekiʻe o ka waiwai o nā kumu waiwai huelo.

Nā hualoaʻa noiʻi ʻenehana

Ma hope o ka hoʻopili ʻana o ka ʻoihana i nā hoʻokō o ka papahana, ua ʻoi aku ka nui o ka hoʻōla ʻana o nā metala waiwai mai nā koena cyanide o nā mea gula i hoʻohuihui ʻia ma mua o 90%. Ua hoʻokō kēia hoʻokō i ka hoʻolei ʻana me ka ʻole o ka pōʻino a me ka hoʻohana piha ʻana i nā kumuwaiwai o nā koena cyanide mai nā mea gula. I kēlā me kēia makahiki, ua hana ka papahana ma kahi o 8.000 tons o nā mea kēpau a me nā mea keleawe, ma luna o 300.000 tons o nā mea sulfur kiʻekiʻe, ma luna o 200.000 tons o ka waikawa sulfuric i hoʻohuihui ʻia a me nā pellets oxidized, ma kahi o 700 kg o ke gula, a ʻoi aku ma mua o 90 miliona mau tile interlocking kaila ʻEulopa. ʻIke ʻia, ua lawe mai ka papahana i nā pono waiwai, kaiapuni, a me ka nohona kupaianaha.