Mai i te tekau tau atu i 1990, kua tīmata ngā whenua o tāwāhi ki te ako i te hangarau whakapai hua atamai, ā, kua kitea ētahi putanga ariā, pērā i a GunsonSortex i te UK me Outo-kumpu i Pinirana. Me RTZOreSorters, me ētahi atu, kua whakawhanake, kua whakaputa hoki i te neke atu i te tekau ngā momo tātari whakaahua-hiko ahumahi, tātari irahiko, me ētahi atu, ā, kua angitu te whakamahi i roto i te mara tātari o ngā konganuku kore-ferrous me ngā konganuku utu nui, engari nā te utu nui, te iti o te tika o te tātari, he iti te kaha tukatuka, ā, he iti te whakatairanga me te tono.
Ki te whakatauritea ki ngā whenua o tāwāhi, he tōmuri te tīmatanga o ngā rangahau hangarau e pā ana ki tōku whenua, ā, he whāiti te mara rangahau. I te tau 2000 pea, i puta mai ētahi mīhini whakarōpū i te mākete o roto, ko te nuinga ko te whakarōpū tae, te whakarōpū whero-whero, te whakarōpū hiko, me ētahi atu, e whakamahia ana mō te whakarōpū witi, kai, tī, rongoā, rauemi mata matū, pepa, karāhe, whakarōpū para me ētahi atu ahumahi, engari mō ngā konganuku utu nui me ngā konganuku onge pērā i te koura, te whenua onge, te parahi, te tungsten, te waro, te rino aukume ngoikore, me ētahi atu, kāore e taea te tīpako me te maka atu i mua, inā koa i roto i te maroke, he maamaa tonu te tīpako i mua i te taputapu maka hiku.
I tēnei wā, kāore he taputapu motuhake whai hua o ngā maina o te kāinga mō te whakakorenga i mua i te tango i ngā konganuku aukume ngoikore ā-whakapūmau, ngā konganuku konganuku kore-ferrous, me ētahi atu, ko te nuinga o te wā ka whakawhirinaki ki te tikanga wehewehe ā-ringa taketake me te tikanga wehewehe aukume, ā, ko te rahi o te matūriki wehewehe kei waenganui i te 20 me te 150 mm. He kaha teitei, he utu nui hoki. Mō ngā kohuke he iti noa te rerekētanga o te tae, te kanapa, te āhua, me te mātotoru o te konganuku me te toka para, he iti te whai huatanga o te wehewehe, he nui te hapa, ā, kāore e taea te wehewehe i ētahi. Mō te aukumeiti, ka taea te whakamahi i te tikanga wehewehe aukume hei maka i ngā hiku, engari mō ngā konganuku he ngoikore ngā āhuatanga aukume, ngā konganuku konganuku kore-ferrous, me ētahi atu, he nui te hapa wehewehe, he iti te whai huatanga o te wehewehe, ā, he nui te maumau rauemi.
He pai te mīhini tātari pūoko atamai mō te tukatuka i mua i te kōhatu, he tere te waimeha o te kōhatu mata, ā, he pai te pānga wehenga i waenga i te toka e karapoti ana me te kōhatu whai hua i muri i te kuru.
01
Ko te whakaheke i te taumata tapahi o ngā maina he rite ki te whakawhānui i ngā rahui ahumahi o te konganuku;
02
Whakaitihia te utu o te huri me te whakapai ake i muri mai;
03
Ka taea te whakapai ake i te kaha tukatuka o te pūnaha i raro i te tikanga kia noho tonu te taputapu huri taketake;
04
Mā te whakapai ake i te taumata kua tīpakohia ka whai hua ki te whakau me te whakapai ake i te kounga o ngā mea kukū me te whakaiti i ngā utu whakarewa;
05
Whakaitihia te nui o ngā para para pai rawa, whakaitihia ngā utu whakaputa me te tiaki i ngā puna para, me te whakapai ake i te haumaru huri noa i te rohe puna.
Hei tauira, tirohia ngā maina koura: i tēnei wā, ko ngā rauemi koura kua whakamātauhia o tōku whenua he 15,000-20,000 tana, ko te whitu o ngā tūranga o te ao, me te whakaputanga koura neke atu i te 360 tana ia tau, ko ngā rahui koura toka he tata ki te 60%, ā, ko te toharite o ngā putunga konganuku he tata ki te 5%. Mō te g/t, ko ngā rahui koura toka he tata ki te 3 piriona tana. Kua riro koia te kaihanga koura nui rawa atu o te ao. Heoi, kei te whakamahi tonu te tukanga whakapai koura i tōku whenua i te tukanga tuku iho o te cyanidation whakapūmau-whakapūmau. Kāore he huarahi whai hua hei maka i ngā hiku i mua i te kuru me te huri. He nui te kawenga o te kuru, te huri me te whakapūmau, ā, he nui tonu te utu o te whakapai. Neke atu i te 5% te tere o te mate o te keri, tata ki te 90% te tere o te whakaora o te whakapai me te whakarewa, he nui te utu o te whakapai, he iti te tere o te whakaora rauemi, ā, he ngoikore te tiaki taiao.
Whai muri i te whakakorenga i mua mā te whakamahi i te pūoko mohio, ka taea e te toka para kua tīpakohia te hanga i te 50-80% o te konganuku mata kua tīpakohia, ka whakarei ake i te kounga koura kua tīpakohia mā te 3-5 ngā wā, ā, ka whakaitihia te maha o ngā kaimahi i roto i te wheketere whakapaipai mā te 15-20%, te pikinga 25-30% o te toka para kua whakakorengia me te 10-15% o te hanga whakarewa.
Ka taea te penapena i te utu o te kuru me te huri mā te neke atu i te 50%, ka taea te whakaiti i te rahinga matū e whai ake nei mā te neke atu i te 50%, ka tino pai ake te whai huatanga o te whakaputa, ka pai ake te uara whakamahi anō o te toka para, ka whakaitihia te kino ki te taiao, ā, ka tino pai ake te painga ōhanga.
Ka taea e te whānuitanga o te rahi o te matūriki o te tātaritanga pūoko atamai te tae ki te 1mm ki te 300mm, ā, ka taea e te pūoko te tautuhi i te 40,000 nga wahi o te konganuku ia hekona. E torutoru noa ngā ms e hiahiatia ana mō ia wahi konganuku mai i te kitenga o te pūoko whiwhi ki te tohutohu tātaritanga i whiwhihia e te actuator. E torutoru noa ngā ms e hiahiatia ana mō te wae werohanga ki te whakaoti i te mahi kotahi. Ka taea e te kaha tukatuka mōrahi o te mīhini kotahi te tae ki te 400 tana ia hāora, ā, ka taea e te kaha tukatuka o te taputapu kotahi te tae ki te 3 miriona tana ia tau, he rite ki te tauine o te maina reo me te nui.
Ka taea e ngā taputapu tātari pūoko atamai te whakarerekē ngāwari i te pūmanawa me ngā paepae tātari kua whakaritea i runga ipurangi, ā, ka aro atu ki ngā rerekētanga o te kounga me te nui o te konganuku mata i te wā, kāore e taea te whakatutuki i runga i ngā taputapu tātari tuku iho. Mēnā ka tae te konganuku mata ki tētahi taumata wehewehe i te wā kuru, ahakoa ko te taumata wehewehe anake o te toka, o te gangue rānei e karapoti ana, ka puta tika rānei te kukū whakamutunga, ka whakamahia te nuinga mō ngā konganuku whakarewa (konganuku rino kore-aukume, konganuku rino ngoikore-aukume rānei, parahi, mata, Kōwhiringa-mua me te whakakorenga para o te konutea, te nikara, te tungsten, te molybdenum, te tine, te whenua onge, te koura, me ētahi atu), te waro me ngā kohuke kore-whakarewa pērā i te talc, te fluorite, te konupūmā kāponāte, te dolomite, te calcite, te apatite, me ētahi atu. Ka tino whakaitihia te nui o te kukū matotoru e uru ana ki te tukanga e whai ake nei, ā, ka pai ake te kounga, ka taea te whakaiti i te utu o te huri me te whakapai ake i muri mai. Kāore e taea te whakataurite i te whakapai ake i te pūoko atamai ki te tātari ā-ringa tuku iho, te wehenga aukume, me te wehenga photoelectric i runga i te tika o te tautuhi, te tere urupare, te pai o te tātari, me te. te kaha tukatuka. Ko te tātaritanga mohio he whakaaturanga whānui o te hangarau tātaritanga hou me te hangarau matihiko, ā, kua noho hei huarahi whanaketanga matua o te kōwhiringa-mua o te kohuke.
Ko ngā rauemi kohuke Hainamana he konganuku hiroki te nuinga, ā, he nui te kaha rokiroki. Me pēhea te maka atu i ngā para i mua, te whakapai ake i te whai huatanga o te huri me te whakapai ake i muri mai, me te whakaiti i te utu o te whakapai ake, me te aro kaha ki ngā whakaritenga whānui a te whenua mō te "hanga maina atamai me ngā maina matomato", ka noho hei ia o te whanaketanga o te umanga keri o tōku whenua. Nō reira, kei te tata te whanaketanga o ngā taputapu tātari atamai e tika ana mō ngā kohuke o roto, ā, ka whānui rawa te tirohanga mākete.
Te wā tuku: 25-Pepuere-2022