Ngā Tukanga Hydrometallurgical me ā rātou Whakamahinga
Pendahuluan
Ko te hydrometallurgy he peka o te metallurgy e whakamahi ana i ngā otinga wai hei hoahoa, hei whakawhanake, hei whakahaere hoki i ngā tukanga mō te wehewehe i ngā konganuku mai i ngā konganuku, i ētahi atu rauemi mata rānei. He maha ngā wā ka whakamahia tēnei tikanga hei tango i ngā konganuku pēnei i te parahi, te koura, te nikara, te uranium, me ngā konganuku whenua onge nā te mea he pai ake te taiao i ngā tikanga pyrometallurgical, e hiahia ana ki ngā pāmahana teitei.
I roto i tēnei tuhinga, ka matapakihia hōhonutia te tukanga hydrometallurgical, ngā mātāpono kei raro i tēnei tikanga, ngā wāhanga e whai wāhi ana ki te wehenga whakarewa, me ētahi tono nui i roto i te ahumahi o ēnei rā.
Ngā Mātāpono Taketake o te Hydrometallurgy
He maha ngā tukanga matua o te mahi whakarewa wai: te tango wai, te wehenga totoka-wai, me te whakaora whakarewa. He āhuatanga whakahaere me ngā tikanga motuhake tō ia tukanga.
1. Te Whakarewa: Ko te whakarewa te wāhanga tuatahi e uru ana ki te tango i te konganuku mai i tōna konganuku mā te whakamahi i tētahi otinga whakarewa pērā i te waikawa, te turanga, te whakarewa ammonia rānei. I roto i tēnei tukanga, ka kuruhia te konganuku, ka hurihia kia nui ake te horahanga o te mata e pā ana ki te otinga whakarewa. Ko ētahi momo o tēnei tukanga ko te whakarewa i te tāke, te whakarewa puranga, te whakarewa i roto i te wāhi, me te whakarewa whakaohooho.
2. Te Wehenga Totoka-Wai: Whai muri i te tangohanga, ka wehea te wairewa kukū kei roto te konganuku i te toenga totoka. Ko ngā tikanga e whakamahia ana i roto i tēnei wehenga ko te tātari, te centrifugation, te sedimentation rānei.
3. Te Whakaora i te Konganuku: Ko te wāhanga whakamutunga ko te whakaora i te konganuku mai i te wairewa horoi. Ko ētahi o ngā tikanga e whakamahia ana ko te whakamakuku, te hikohiko, me te tango whakarewa. Ko te whiriwhiri i te tikanga whakaora e whakawhirinaki ana ki ngā āhuatanga o te wairewa hua me te momo konganuku e tangohia ana.
Ngā Wāhanga i roto i te Tukanga Hydrometallurgical
1. Te Whakarewa
Ko te tukanga tātā te kaupapa matua o te hydrometallurgy, ā, ka taea te whakahaere i roto i ngā huarahi maha:
– Te Whakarewa Puranga: Ka whakatakotoria te konganuku kuru ki roto i ngā puranga nui ki waho. Ka pania he otinga whakarewa mā roto i tētahi pūnaha whakamakuku ka uru mā roto i te puranga, ka whakarewa i ngā konganuku e hiahiatia ana.
– Te Whakarewatanga ā-Tūnga: Ka pupuhihia tika te otinga whakarewatanga ki roto i ngā putunga kohuke o raro whenua, me te kore e tangohia te kohuke. He maha ngā wā ka whakamahia tēnei tikanga mō ngā putunga kāore e whai hua ki te keri mā te whakamahi i ngā tikanga tuku iho.
– Te Whakarewatanga Whakaohooho: Ka konatunatua te konganuku ki te wairewatanga i roto i te tāke whakaohooho. Mā ngā āhuatanga hangarau ka noho tonu te mata o te konganuku ki te wairewatanga, ka tere ake te whakarewatanga.
2. Wehenga Totoka-Wai
I muri i te tangohanga, me wehe te toenga totoka mai i te wairewa kei roto he konganuku:
– Tātari: Whakamahia hei wehe i ngā mea totoka mai i ngā wai i runga i te rahi o te matūriki. He tikanga tino noa tēnei i roto i te taiwhanga me te ahumahi.
– Te Whakapūngao: Te whakamahi i te kaha pūngao hei wehewehe i ngā wāhanga i runga i ngā rerekētanga o te mātotoru.
– Te Whakapūpūngao: Te whakamahi i te kaha ā-papa hei wehe i ngā matūriki totoka mai i te wai. Ka mahia tēnei i roto i tētahi tāke nui e kiia nei ko te whakamātotoru.
3. Te Whakaora i te Mea Whakarewa
Ko ētahi tikanga mō te whakaora i ngā konganuku mai i ngā wairewa waipara ko:
– Te ua: He tikanga e tāpirihia ai he matū e tika ana (te kaiāwhina ua) ki tētahi otinga hei whakarewa i te konganuku ki te āhua totoka.
– Te hikohiko: Te whakamahi i te iahiko hei whakaputa i te rerenga whakarewa mai i tētahi otinga. E hiahiatia ana he katote me he anote mō tēnei tukanga, me tētahi irahiko kei roto ngā katote whakarewa.
– Tangohanga Whakarewa: Ka whakawhitia te konganuku mai i te otinga horoi ki te whakarewa waro mā te tukanga wehewehe. Kātahi ka taea te tango anō i te konganuku mai i te whakarewa waro ki te otinga wai mā te tango anō.
Ngā tono mō te hanga whakarewa wai
1. Te Tango Koura
He whānuitia te whakamahinga o te hydrometallurgy i roto i te umanga keri koura. Hei tauira, ko te tukanga cyanidation he whakamahi i te otinga cyanide hei whakarewa i te koura mai i tana konganuku. Neke atu i te rau tau te roa o te whakamahinga o tēnei tikanga, ā, e mōhiotia ana tōna whai huatanga.
2. Te Tango Parahi
Ko te parahi tētahi atu konganuku e tangohia ana mā roto i ngā tikanga hydrometallurgical, e whakamahi ana i ngā tikanga puranga whakarewa. Ko te waikawa whanariki te otinga whakarewa matua hei whakarewa i te parahi mai i ngā konganuku iti-whanariki.
3. Te Tangohanga Nikara
He maha ngā wā ka tukatukahia te nikara laterite (te konganuku nikara laterite) mā te whakamahi i ngā tukanga hydrometallurgical. Ko te tango waikawa pēhanga-teitei (HPAL) he hangarau noa mō te wehewehe i te nikara mai i te konganuku laterite mā te whakamahi i te waikawa whanariki i te pēhanga teitei.
4. Tangohanga Uraniuma
He whānuitia te whakamahinga o ngā tukanga wai-whakarewa mō te uranium i roto i ētahi whenua he nui ngā rahui uranium. Ka whakamahia te wai whakapūkara hei whakarewa i te uranium mai i te konganuku, ā, ka whakahokia mai te uranium mā te whakawhiti katote, mā te tango whakarewa rānei.
5. Te Tukatuka Para Hiko
Ko te tukatuka para hiko he whakamahinga hou o te hydrometallurgy. He nui ngā konganuku utu nui kei roto i ngā para hiko, pērā i ngā rorohiko me ngā waea pūkoro, tae atu ki ngā konganuku whenua onge. Mā te hydrometallurgy ka taea te whakaora i ēnei konganuku me te tino whai hua ki te whakataurite ki ngā tikanga tuku iho.
Ngā Painga me ngā Here o te Hydrometallurgy
Keunggulan
1. Te Whai Hua o te Pūngao: Ko ngā tukanga wai-whakarewa e hiahia ana kia iti ake ngā pāmahana whakahaere i te pyrometallurgy, arā, he iti ake te whakamahinga pūngao katoa.
2. He pai mō te taiao: Ka whakaitihia e tēnei tikanga ngā tukunga hau kati kōtuhi me te parahanga o te hau. Hei tāpiri, ka taea te whakahaere pai ake i ngā para e puta mai ana.
3. Te Kaha Whakaora Teitei: Mā te mahi whakarewa wai ka taea te whakaora i ngā konganuku mai i ngā konganuku iti te kounga, ā, kāore pea e pai ki te tukatuka mā ētahi atu tikanga.
Ngā Here
1. Ngā Utu Matū: Ka tino nui te utu mō te whakamahinga o ētahi matū, ā, ka tāpiri atu ki ngā utu whakaputa katoa.
2. Wā Tukatuka: Ko ētahi tikanga hydrometallurgical ka roa ake i ngā tikanga pyrometallurgical, hei tauira, te tango puranga ka roa pea mō ētahi marama.
3. Te Whakahaere Para Wai: He wero nui ki te taiao te whakakorenga me te whakahaere i ngā para wai i puta mai i ngā tukanga hydrometallurgical.
Whakamutunga
He tikanga whai hua, he tikanga pai hoki mō te taiao te whakamahi i te hydrometallurgy hei tango i ngā konganuku mai i ngā konganuku me ētahi atu rauemi mata. He whānuitia ngā whakamahinga o tēnei tikanga i roto i ngā ahumahi tango, tae atu ki te koura, te parahi, te nikara, te uranium, me te tukatuka para-hiko, ā, he mea nui tēnei tikanga ki te tuku konganuku o te ao. Heoi anō, kei te mau tonu ngā wero, pērā i ngā utu matū me te whakahaere wai para. Ko te whakapai ake i te whai huatanga o te tukanga me te whakawhanake i ngā tikanga hou kei te arotahi tonu ki te rangahau hydrometallurgical hei whakatutuki i ngā hiahia e tipu haere ana o te ahumahi.
