ʻO ka hoʻohana ʻana i ka Cyanide ma ke kaʻina hana cyanidation gula

ʻO ke kaʻina hana cyanidation he pōhaku kihi ia i ka unuhi ʻana i ke gula mai kāna mau oka. ʻO ka hoʻomaopopo ʻana i ka ʻai ʻana o ka sodium cyanide i loko o kēia kaʻina hana he mea koʻikoʻi ia no ka hoʻonui ʻana i ka pono o ka hana a me ka hōʻemi ʻana i ka hopena o ke kaiapuni. Hoʻopili kēia ʻatikala i nā ʻano hana like ʻole e hāʻawi i ka ʻai ʻana ʻO ka sodium Cyanide i ka cyanidation gula hana.

1. Autodecomposition

Sodium cyanide loaʻa ka autodecomposition i ka wā o ka cyanidation. ʻO kēia ka hopena i ka hoʻokumu ʻana i ka waikawa carbonic, formic acid, a me ka amonia. Hiki ke paʻakikī nā hopena autodecomposition a ua hoʻohuli ʻia e nā mea e like me ka mahana, ka ʻike, a me ka hiki ʻana o kekahi mau catalysts.

2. Hydrolysis

Hydrolysis o ʻO Sodium cyanide ʻo ia kekahi ala nui o ka ʻai. ʻO ka hopena ma waena o ka wai a me ka sodium cyanide penei:

(H2O + NaCN HCN + NaOH)

ʻO ka hydrogen cyanide (HCN), kahi mea ʻawaʻawa a me nā mea ʻawaʻawa, ua hana ʻia i kēia hydrolysis. ʻO ka nui o ka HCN i hana ʻia e pili pono i ka alkalinity o ka hopena. Ke mālama ʻia ka waiwai pH ma 12 a ʻoi aʻe paha, paʻa mau ka hopena cyanide. Eia naʻe, nā mea hiki ke hoʻohaʻahaʻa i ka waiwai pH, e like me ka carbon dioxide mai ka lewa, nā waikawa i loko o ka wai makeup, nā ion magnesium divalent (Mg2 +) a me nā iona alumini trivalent (A13 +), a me nā minelala like ʻole i loko o ka ʻele a i ʻole nā ​​mea hoʻoheheʻe o nā minerala sulfide, hiki ke hoʻoikaika i ka hopena hydrolysis.

3. Hoʻokumu ʻia o Thiocyanate

Hoʻopili ka sodium cyanide me nā mineral sulfide e like me ka hao, ke keleawe, a me ka arsenic e hana i nā paʻakikī thiocyanate. Hoʻololi kēia mau hopena i nā ion cyanide i nā ʻano ʻano liʻiliʻi, e hōʻemi maikaʻi ana i ka nui o ka cyanide manuahi i loaʻa no ohi gula. ʻO ka hoʻokumu ʻana o kēia mau mea paʻakikī thiocyanate ʻaʻole wale e hoʻonui i ka hoʻohana cyanide akā pili pū kekahi i ka pono holoʻokoʻa o ke kaʻina cyanidation gula.

ʻO ka hoʻomaopopo ʻana i kēia mau mīkini hoʻohana e hāʻawi i nā ʻike koʻikoʻi no nā mea hana ma ka ʻoihana eli gula. Ma ka nānā pono ʻana a me ka hoʻomalu ʻana i nā kūlana o ke kaʻina hana cyanidation, hiki ke hoʻemi i ka hoʻohana ʻana i ka cyanide, hoʻomaikaʻi i nā kumukūʻai hoʻihoʻi gula, a hoʻemi i ka wāwae kaiapuni o nā hana eli gula.