Muva nje, iphrojekthi eholwa yiNyuvesi yaseNanchang, ehlanganisa ukuthuthukiswa okusebenzayo nokuluhlaza kwe-ion adsorption.umhlaba ongavamileizinsiza ezinobuchwepheshe bokubuyisela imvelo, iphumelele ukuhlolwa kokusebenza okuphelele ngamaphuzu aphezulu. Ukuthuthukiswa okuyimpumelelo kwalobu buchwepheshe obusha bezimayini kuzuze imiphumela ebalulekile ekuthuthukiseni izinga lokubuyiselwa komhlaba okungavamile kanye nezimayini eziluhlaza ezisebenza kahle, noma kwahlola indlela entsha yokusetshenziswa kahle nokuluhlaza kwemithombo yomhlaba engavamile e-China.
Ukukhipha ama-reagents akhishwayo kudoti oqinile futhi uwasebenzise kabusha
I-ion adsorptionumhlaba ongavamileiwumthombo oyingqayizivele eChina. Nokho, i-ion adsorption ekhonaumhlaba ongavamileubuchwepheshe bezimayini bukhawulela ukumbiwa kanye nokusetshenziswa kwe-ion adsorptionumhlaba ongavamileizinsiza eChina. Kulo mongo, kuyaphuthuma ukuthuthukisa isizukulwane esisha sobuchwepheshe bezimayini obusebenzayo nobuluhlaza. Ubuchwepheshe obuhlanganisiwe bokuthuthukiswa okusebenzayo nokuluhlaza kanye nokubuyiselwa kwemvelo kwe-ion adsorbedumhlaba ongavamileizinsiza sezivele. Ukuhlanganiswa kwayo okuhlangene, ukuhamba ngebhayisikili kwe-aluminium magnesium, ukuguqulwa kwemfucuza, nezici ezisebenzayo neziluhlaza kunikeza imibono emisha yokuthuthukiswa kwezinsiza zomhlaba ezingavamile ze-ion adsorbed.
Ukuthuthukiswa ion adsorbedimihlaba engavamileinomlando weminyaka engaphezu kwamashumi amane, nokuthi ungasungula kanjani futhi uthuthukise ubuchwepheshe bokuthuthukiswa kwe-ion adsorbedimihlaba engavamilebekulokhu kuyinselele kubacwaningi bomhlaba abayivelakancane. Ekuqaleni kuka-Okthoba, intatheli yahlangana noSolwazi uLi Yongxiu waseSikoleni SeKhemistry Nobunjiniyela Bamakhemikhali eNyuvesi yaseNanchang. Ehhovisi lakhe, "imephu yokusabalalisa yomhlaba ongavamile eShayina" iyamangalisa. U-Li Yongxiu uthe amayunithi ocwaningo lwesayensi, ubuchwepheshe, kanye namakhono kumephu yokusabalalisa kuxhumeke njengenethiwekhi, enokuxhumana okungenakubalwa phakathi komunye nomunye.
Iphrojekthi yezobuchwepheshe edidiyelwe yokuthuthukiswa kohlaza okuphumelelayo nokubuyiselwa kwemvelo kohlobo lwemithombo ye-ion adsorption eyivelakancane yaholwa yiNyuvesi yaseNanchang, yathuthukiswa ngokuhlanganyela yiJiangxi University of Technology, iChangchun Institute of Applied Chemistry of Chinese Academy of Sciences namanye amayunithi ayishumi, noLi Yongxiu. njengomholi wephrojekthi.
Iminyaka eminingi, ukungcoliswa kwe-ammonia nitrogen okubangelwa ukucwiliswa kwe-ammonium sulfate kanye nokuguguleka kwenhlabathi okubangelwa ukucwiliswa kwe-in-situ kuthinte kabi imvelo yezindawo zezimayini. Nakuba izinqubo ezisanda kwethulwa ezisanda kwethulwa ze-calcium magnesium chloride ne-magnesium sulfate zingaxazulula inkinga yokungcoliswa kwe-ammonia nitrogen, ukusebenza kahle kwe-leaching akwanele, futhi ukusetshenziswa kwangempela kwezimayini kuphakeme, ikakhulukazi ukukhishwa kwamanzi okubangelwa i-magnesium sulfate nakho kubi kakhulu. .
Ngakho-ke, sithuthukise inqubo esebenzayo yokucwilisa okuluhlaza kanye nobuchwepheshe bokusebenzisa kabusha izinto sisebenzisa usawoti we-aluminium njengesiphehli sesizukulwane esisha se-leaching. "U-Li Yongxiu wachaza ukuthi lobu buchwepheshe buqala ngokugqashuka ekuqondeni kwezinqubo zendabuko, busuka kumbono wokushintshaniswa kwe-ion buyiswe endleleni yokuxhuma eboshwe ngokuhlanganyela yi-ion hydration kanye ne-anion coordination adsorption kwimodi ye-double layer.
Ngokungafani nesikhathi esidlule, sikhethe uhlelo olusebenzayo lokuleaching kanye nendlela yokucubungula sisebenzisa usawoti we-aluminium njenge-reagent yesizukulwane esisha, "kusho uLi Yongxiu. Lezi zinhlelo nezindlela zihlanganisa uhlelo lwe-synergistic leaching losawoti we-aluminium kanye nosawoti we-inorganic onenani eliphansi, a inqubo yokukhishwa kwe-leaching ye-calcium magnesium usawoti kanye nosawoti we-aluminium, kanye nenqubo yokukhishwa kwesiteji ye-citrate kanye nosawoti we-inorganic ogxilile ophansi.
Kuyaphawuleka ukuthi usawoti we-aluminium kanye nosawoti we-calcium magnesium okukhulunywe ngawo ngenhla akhishwa futhi agaywe kabusha emanzini angcolile ayinsalela yokukhiqizwa kwezimayini. Kuze kube manje, ithimba lenze ubuchwepheshe obusha bokunothisa nokuhlukanisa obungakwazi ukufeza ukuhlukaniswa kanye nokugaywa kabusha kwama-ion omhlaba ayivelakancane ukusuka ku-aluminium namanye ama-ion akhona, kuhlanganiswe nemvula, ukukhishwa, kanye nobuchwepheshe bokuhlukanisa ulwelwesi. Siguqula udoti oqinile usuka ku-hydrolyzed aluminium slag uwenze izinto ezisebenza kahle zokuleaching zokukhiqizwa kwezimayini, sifezekise ukugaywa kabusha kwezinto ezingcolisayo futhi sehlise kakhulu ukusetshenziswa kwe-reagent kanye nokukhiqizwa okungcolile. "U-Li Yongxiu uthe ngobuchwepheshe bokuhlukanisa obusha, obuke buhlangeneumhlaba ongavamilefuthi i-aluminium ingaphathwa njengezivakashi.
Ngale ndlela, okuqukethwe kwe-aluminiumimihlaba engavamileingalawulwa ngaphansi kwenkulungwane, ibeka isisekelo sokuzuza ubumsulwa obuphezuluumhlaba ongavamileukuhlukaniswa nokukhiqizwa okuhlanzekile ngaphandle kwezinsalela zemfucuza enemisebe.
Ukuhlanganiswa "kokulungiswa kokucwiliswa kwezimayini" kwengeza okuluhlaza ezimayini zomhlaba eziyivelakancane
Kusukela e-Nanchang kuya e-Ganzhou, kusukela ezimayini zomhlaba eziyivelakancane kuya emabhizinisini angavamile okuncibilikisa nokuhlukanisa... U-Li Yongxiu akasakwazi ukukhumbula inani lezikhathi azihambile. Ziningi kakhulu izinkambo eziya emuva naphambili ngonyaka, angazi ukuthi zingaki. Ngothando lweumhlaba ongavamileembonini, uLi Yongxiu uhole ithimba lakhe ukuthi lihlale lizama futhi lisungula indlela entsha yokusiza ukuthuthukiswa kwekhwalithi ephezulu yemboni yomhlaba engavamile.
Ukuqaliswa komgomo kazwelonke "wekhabhoni ekabili" kubeke phambili izidingo ezintsha zokuthuthukisa imvelo kanye nokuvimbela ukungcoliswa kwemvelo, kuyilapho kuletha amathuba amasha embonini yomhlaba engavamile.
Indlela yokufeza uhlaza enqubweni yokukhiqiza umhlaba ongavamile kanye nokuhlanganiswa "kokulungiswa kwe-leaching yezimayini" kungenye iphuzu lokusungula.
Umnyombo walokhu okuqanjwa kabusha wukusebenzisa ukubikezela kwe-seepage nezindlela zokulawula ukubhangqwana kobuchwepheshe bokuhlola kanye ne-leaching, kanye ne-leaching kanye nokubuyiselwa kwemvelo, ukufeza lokhu. "ULi Yongxiu uthe isici esibalulekile samadiphozithi ohlobo lwe-ion adsorption ukungafani kwawo. Ngakho-ke, ubuchwepheshe bezimayini be-in-situ leaching obuntula idatha mayelana nokusatshalaliswa komhlaba okungavamile kanye nezimo ze-geological and hydrological. Ukuze kufezeke lokhu, ithimba labacwaningi lizokwenza thuthukisa izinzuzo zobungcweti ze-Jiangxi University of Technology, Nanchang University, kanye ne-Wuhan University ekuqaguleni kwe-seepage nasekulawuleni inqubo.
Inqubo yokukhipha okuluhlaza yohlobo lwe-ion adsorptionumhlaba ongavamileinsimbi akufanele kuphela icabangele ngokugcwele ukusebenza kwezimayini, umthelela wendawo, ikhwalithi yomkhiqizo, kanye nezindleko zokukhiqiza, kodwa futhi ihlanganise ngokugcwele isakhiwo semayini, ukugeleza kwesixazululo se-leaching, kanye nobuchwepheshe bokubuyisela imvelo ukuze kuthuthukiswe umklamo wobunjiniyela. "U-Li Yongxiu wachaza ukuthi ukuze kugwenywe ukulahlekelwa okungahleliwe kwesisombululo se-leaching futhi kufinyelele ukuhlanganiswa kwezimayini, ukucwiliswa kwemigodi, nokulungisa.
Mayelana nezindlela zokukhishwa kwe-ore, situsa ukunquma ukuthi kufanele kuthathwe i-in-situ leaching noma i-heap leaching ngokusekelwe kudatha yokuhlola yokukhiqiza, noma inhlanganisela yezinto eziphilayo yalezi zindlela ezimbili. "U-Li Yongxiu uthe mayelana nobuchwepheshe be-heap leaching, ithimba labacwaningi lenze ubuchwepheshe obulawulekayo be-heap leaching obubonakala ngokukhula kwenqwaba ukuze kuthathelwe indawo indlela yangaphambilini enkulu yokukhishwa kwe-heap leaching kanyekanye. Lokhu kusiza ekuzuzeni ukuhlanganiswa kwezimayini. , ukucwiliswa, nokulungisa, ukuqeda ukuguguleka kwenhlabathi kanye nokuwa kokudilika kwenhlabathi phakathi nenqubo yokucwiliswa kanye nemisila elandelayo.
U-Li Yongxiu utshele izintatheli ukuthi le phrojekthi igxile ezindabeni ezibalulekile ezifana nezinga eliphansi lokutholwa kwezinsiza kanye nomthelela omkhulu kwezemvelo ohlotsheni lwe-ion.umhlaba ongavamileinqubo yokukhipha. Ucwaningo oluyisisekelo nolwezobuchwepheshe nomsebenzi wokuthuthukisa wohlobo lwe-adsorption ye-ion esebenza kahle neluhlazaumhlaba ongavamileukukhishwa kwenziwe ngendlela ehlelekile, futhi uchungechunge lwezimpumelelo ezintsha sezizuziwe.
Ukuqanjwa kabusha kwezobuchwepheshe kanye nenqubekelaphambili kuzoqhubeka 'kwengeza okuluhlaza' ekuthuthukisweni kweChinaumhlaba ongavamileimboni, "kusho u-Li Yongxiu. Le phrojekthi yenze intuthuko entsha ku-theory eyisisekelo, ukuthuthukiswa kwezobuchwepheshe, ukuboniswa kwesicelo, nezinye izici ezinkulu. umhlaba, futhi ukhuthaze ukuthuthukiswa kwekhwalithi ephezulu ye-remhlabeniimboni.
Isikhathi sokuthumela: Oct-24-2023