Nā ʻano a me nā kaʻina hana no ka wehe ʻana i ka Cyanide mai ka ʻili o ka Sulfide Ores

ʻO ka leaching cyanidation kahi hana i hoʻohana nui ʻia i ka ʻoihana eli gula. Eia naʻe, cyanidation leaching huelo he mau pilikia nui. Loaʻa maʻamau kēia mau huelo haʻahaʻa cyanides, ke gula a me ke kala i unuhi ʻole ʻia, a me nā minerala lawe e like me ka chalcopyrite a me ka pyrite. Na ili o nā ʻaila sulfide i keia mau huelo ua keakea e ʻO Sodium cyanide i ke kaʻina hana cyanidation. ʻOiai he haʻahaʻa ka ʻai a me ka cyanide ʻAʻole kiʻekiʻe loa ka manaʻo, ʻo ka nui o nā huelo e hopohopo nui iā lākou.

I kēia manawa, ʻekolu mau ʻano lapaʻau maʻamau no ka cyanidation leaching tailings: ka hoʻōla ʻana i ka waikawa, ka hoʻōla ʻana o ka oxidant, a me ka mālama ʻana i ke keleawe - paʻakai.

Keʻano hoʻouluʻana i kaʻakika

ʻO ke kaʻina hana hoʻonā waika e hoʻohui i ka sulfuric acid a i ʻole ka waikawa oxalic e hoʻāla ai i nā huelo. ʻOiai hiki i kēia ʻano hana ke hoʻoikaika pono i nā huelo, aia kekahi mau drawbacks. ʻO ka mea mua, hiki iā ia ke hana i ke kinoea hydrogen cyanide ʻona. ʻOiai hiki ke hoʻohana hou ʻia ke kinoea hydrogen cyanide i hoʻihoʻi ʻia, ʻoi aku ka pilikia o ka hana. ʻO ka lua, hiki i ka ʻakika ke hoʻopau maʻalahi i nā lako a me nā pipeline, e koi ana i nā ana anti-corrosion kiʻekiʻe.

ʻO ke ʻano o ka hoʻoulu ʻana i ka Oxidant

Ma ke kaʻina hana hoʻōla, hoʻohui ʻia ka hydrogen peroxide a i ʻole hypochlorite e hoʻāla ai i nā huelo. Eia nō naʻe, paʻakikī ke kāohi pololei i ke ʻano o ka oxidant. Hiki i ka nui o ka nui ke hoʻoheheʻe i nā ores sulfide, e hōʻemi ana i ko lākou hiki ke hoʻihoʻi. Eia kekahi, ʻoi aku ka nui o nā oxidants i ke kino o ke kanaka, e hoʻoweliweli ana i ke olakino o nā limahana.

Copper - Keʻano Lapaʻau Paʻakai

ʻO ke ʻano hana lapaʻau keleawe - hoʻohana i nā paʻakai inorganic e like me ke keleawe sulfate a i ʻole nā ​​paʻakai hao e hoʻāla ai i nā huelo. Eia nō naʻe, loaʻa i nā lula kaiapuni nā koi koʻikoʻi no ka hoʻokuʻu ʻana i nā ion keleawe i ka wai ʻino. Eia kekahi, ʻo nā ion keleawe nā mea hoʻoulu no ka sphalerite a me ka pyrite. No laila, ʻaʻole kūpono kēia ʻano no nā huelo cyanidation i loaʻa nā sphalerite a me ka pyrite, a ʻaʻole ia e pili i ke kaiapuni.

ʻO ka hopena, ʻo ka mālama ʻana i ka cyanidation leaching tailing e hāʻawi i kahi paʻakikī paʻakikī. ʻOiai ka haʻahaʻa haʻahaʻa o ka cyanide, ʻo nā kumukūʻai kiʻekiʻe o ka hoʻopukapuka kālā a me nā koi palekana a me nā koi kaiapuni e pono ai e ʻimi i nā ʻano hana lapaʻau hou, ʻoi aku ka maikaʻi, a hoʻomau. Hiki i kēia ke komo i ka hui pū ʻana o nā ʻenehana i loaʻa a i ʻole ka hoʻomohala ʻana i nā ala hou loa e hoʻoponopono ai i nā pilikia kaiapuni a me ka hoʻokele waiwai e pili ana i kēia mau huelo.