ʻO ka "Guardian" o nā metala makamae: No ke aha i hoʻohana nui ʻia ai nā Dithiophosphates (Nā ʻAgent ʻEleʻele) i ka Flotation Mineral

I loko o nā hale hana lana, ua ʻike nui ʻia nā xanthates he mau mea hōʻiliʻili ikaika me ka hiki ke hōʻiliʻili nui. Eia nō naʻe, no ka hoʻomaikaʻi ʻana i ka hoʻōla ʻana o ke gula a me ke kālā a i ʻole ka hoʻokaʻawale ʻana i ke kēpau mai ka zinc, ʻōlelo pinepine nā metallurgists akamai i nā dithiophosphates, i ʻike nui ʻia ʻo "nā mea ʻeleʻele" ma muli o ko lākou ʻano wai ʻeleʻele, pinepine ka viscous. ʻOiai ko lākou ʻano maʻamau ʻole, hāʻawi kēia mau reagents i nā pono kūikawā no ka mālama ʻana i nā metala makamae a me nā ores sulfide paʻakikī.

I. He aha nā Dithiophosphates (Nā Mea ʻEleʻele)?

He papa o nā mea hōʻiliʻili pili kemika nā Dithiophosphates i nā xanthates. ʻOiai he ikaika nā xanthates, nā mea hōʻiliʻili koho ʻole e lana ana i nā sulfides hao (pyrite), ʻoi aku ka koho o nā dithiophosphates. ʻOi aku ko lākou kūpaʻa kemika a ʻaʻole i maʻalahi i ka palaho.

II. Nā Pōmaikaʻi Koʻikoʻi

1. Haʻahaʻa ka pilina no Pyrite: He pono nui kēia no ka hoʻokaʻawale ʻana i ke kēpau a i ʻole ke keleawe sulfides mai ka pyrite. Loaʻa i nā Xanthates ke lana i ka pyrite, ʻoiai ʻo dithiophosphates e hōʻike ana i ka hiki ke hōʻiliʻili nāwaliwali i ka pyrite, e hoʻomaʻamaʻa ana i ka hoʻokaʻawale ʻana.
2. Ka Mana Hoʻiliʻili Ikaika no ke Gula a me ke Kālā: Hoʻokumu nā Dithiophosphates i nā pilina kemika paʻa me nā ʻili metala makamae, e lilo ana ia i mea kūpono loa no ka hoʻōla ʻana i ke gula, ke kālā, a me ka platinum. Hoʻohui ka nui o nā hale hana gula i nā dithiophosphates (e laʻa, Aero 238 a i ʻole ammonium dibutyl dithiophosphate) i nā kaapuni scavenger a i ʻole nā ​​​​mea hoʻomaʻemaʻe e hoʻonui i ka hoʻōla ʻana o ka metala makamae.
3. Nā ʻAno Huʻa: Loaʻa i nā dithiophosphates he nui (e laʻa, Aero 238) ka hiki ke huʻa kūlohelohe, e hōʻemi ana a hoʻopau paha i ka pono no nā huʻa hou aʻe (e like me MIBC a i ʻole ka ʻaila paina). ʻO ka huʻa i hana ʻia he palupalu a haki koke.

III. Nā ʻAno Maʻamau

• Aero 238 (Alkyl Dithiophosphate): He ʻano wai maʻamau me nā waiwai hōʻiliʻili a me ka huʻa. Kūpono no ka hoʻokaʻawale ʻana i ke kēpau-zinc a me ka hoʻōla ʻana i ke keleawe-gula. He ʻala ikaika a me nā waiwai ʻino.
• ʻAmonium Dibutyl Dithiophosphate: Loaʻa ma ke ʻano he pauka keʻokeʻo (ʻoiai ka inoa "ʻeleʻele ʻākena"). ʻAʻole e palaho, haʻahaʻa ke ʻala, hoʻoheheʻe ʻia i ka wai. Kūpono no nā ʻoaka kālā a me nā ʻoaka keleawe paʻakikī, ʻoiai kahi e hoʻoikaika nui ʻia ai nā hopohopo pili i ke kaiapuni.
• Diphenyl Dithiophosphate: ʻAʻole maʻamau, me ka hiki ke hōʻiliʻili ikaika. Hoʻohana ʻia no ka galena refractory oxidized a fine-grained paha.

IV. Nā Manaʻo Hana

• Pōʻino ʻAi: He ʻakika a ʻino nā dithiophosphates wai (e laʻa, Aero 238). E hoʻohana i nā mea kūpaʻa i ka ʻakika no nā laina dosing. Pono nā mea hana e ʻaʻahu i ka PPE kūpono.
• E pale i ka lawe nui ʻana: Hiki i ka lawe nui ʻana ke hoʻopuka i ka huʻa nui, e alakaʻi ana i ke kahe ʻana ("carry-over") mai nā hunaola lana. E hoʻoponopono pono i ka nui o ka lāʻau, ʻoiai ke hoʻohana ʻia nei ka frother.
• Kinetics lohi: Hana lohi ʻo Dithiophosphates ma mua o nā xanthates a koi pinepine i ka manawa hoʻomaʻamaʻa lōʻihi no ka hana maikaʻi loa.

V. Hopena

I ka hana flotation hou, ʻaʻole nā ​​​​dithiophosphates he pani no nā xanthates akā he mau reagents hoʻopihapiha. ʻO kahi hoʻolālā maʻamau ka hoʻohana ʻana i nā xanthates no ka hoʻōla nui ʻana i ka flotation rougher a me nā dithiophosphates no nā pae maʻemaʻe e hoʻonui i ke koho a hoʻōla i nā metala makamae.