I-Kaolin iyiminerali yobumba evamile emhlabeni wemvelo. Iyiminerali ewusizo yombala omhlophe, ngakho-ke, ubumhlophe buyinkomba ebalulekile ethonya inani le-kaolin. Kukhona insimbi, izinto eziphilayo, izinto ezimnyama kanye nokunye ukungcola ku-kaolin. Lokhu kungcola kuzokwenza i-kaolin ibonakale ngemibala ehlukene, ithonya ubumhlophe. Ngakho-ke i-kaolin kumele isuse ukungcola.
Izindlela ezivamile zokuhlanza i-kaolin zifaka phakathi ukuhlukaniswa kwamandla adonsela phansi, ukuhlukaniswa kwamagnetic, ukuntanta, ukwelashwa ngamakhemikhali, njll. Nazi izindlela ezivamile zokuhlanza i-kaolin:
1. Ukuhlukaniswa kwamandla adonsela phansi
Indlela yokuhlukanisa amandla adonsela phansi IFUSA kakhulu umehluko wobuningi phakathi kwe-gangue mineral kanye ne-kaolin ukususa ukungcola okuphezulu kwezinto eziphilayo ezikhanyayo, i-quartz, i-feldspar kanye nezinto eziqukethe insimbi, i-titanium kanye ne-manganese, ukuze kuncishiswe ithonya lokungcola ebumhlotsheni. Ama-centrifugal concentrators avame ukusetshenziswa ukususa ukungcola okuphezulu. Iqembu le-hydrocyclone lingasetshenziswa futhi ukuqeda ukuhlanza nokuhlola i-kaolin enkambisweni yokuhlunga, okungeke nje kufeze injongo yokugeza nokuhlola, kodwa futhi kususe ukungcola okuthile, okunenani elihle lokusetshenziswa.
Kodwa-ke, kunzima ukuthola imikhiqizo ye-kaolin efanelekile ngendlela yokuhlukanisa kabusha, futhi imikhiqizo yokugcina efanelekile kumele itholakale ngokuhlukaniswa kwamagnetic, ukuflotha, i-calcination nezinye izindlela.
2. Ukuhlukaniswa kwamagnetic
Cishe wonke ama-ore e-kaolin aqukethe inani elincane le-iron ore, ngokuvamile angu-0.5-3%, ikakhulukazi i-magnetite, i-ilmenite, i-siderite, i-pyrite kanye nokunye ukungcola kombala. Ukuhlukaniswa kwamagnetic KUBASEBENZISA kakhulu umehluko wamagnetic phakathi kwe-gangue mineral kanye ne-kaolin ukususa lokhu kungcola okunemibala.
Kuma-magnetite, i-ilmenite kanye namanye amaminerali anamandla kazibuthe noma ama-iron filings axutshwe enqubweni yokucubungula, ukusebenzisa indlela yokuhlukanisa kazibuthe ukuhlukanisa i-kaolin kusebenza kakhulu. Kuma-magnetic mineral abuthakathaka, kunezindlela ezimbili eziyinhloko: eyodwa ukuyosa, ukuyenza ibe amaminerali anamandla kazibuthe ensimbi, bese iqhubeka nokuhlukanisa kazibuthe; Enye indlela ukusebenzisa indlela yokuhlukanisa kazibuthe esezingeni eliphezulu ukuze kuhlukaniswe kazibuthe. Ngenxa yokuthi ukuhlukaniswa kazibuthe akudingi ukusetshenziswa kwama-chemical agents, imvelo ngeke ibangele ukungcola, ngakho-ke enqubweni yokucubungula amaminerali angewona awensimbi kusetshenziswa kabanzi. Indlela yokuhlukanisa kazibuthe ixazulule ngempumelelo inkinga yokuxhashazwa nokusetshenziswa kwe-kaolin yezinga eliphansi engeyona eyezimayini zezentengiselwano ngenxa yokuqukethwe okuphezulu kwe-iron ore.
Kodwa-ke, kunzima ukuthola imikhiqizo ye-kaolin esezingeni eliphezulu ngokuhlukaniswa kwamagnetic kuphela, futhi ukwelashwa ngamakhemikhali nezinye izinqubo kuyadingeka ukuze kuncishiswe kakhulu okuqukethwe yinsimbi emikhiqizweni ye-kaolin.
3. Ukuntanta
Indlela yokuntanta isebenzisa kakhulu umehluko womzimba nowamakhemikhali phakathi kwamaminerali e-gangue kanye ne-kaolin ukwelapha i-kaolin ore eluhlaza ngokungcola okwengeziwe kanye nobumhlophe obuphansi, nokususa ukungcola okuqukethe insimbi, i-titanium kanye ne-carbon, ukuze kufezwe ukusetshenziswa okuphelele kwezinsiza ze-kaolin ezisezingeni eliphansi.
I-Kaolin iyiminerali yobumba evamile. Ukungcola okufana nensimbi ne-titanium kuvame ukufakwa ezinhlayiyeni ze-kaolin, ngakho-ke i-ore eluhlaza kumele igaywe kuze kube sezingeni elithile lokucwebezela. Indlela ye-Kaolinite evame ukusetshenziswa njengendlela ye-flotation ye-ultra fine particle flotation, indlela ye-flotation ye-double fluid layer kanye nendlela ye-flotation ekhethiwe ye-flocculation, njll.
Ukuntanta kungakhuphula ngempumelelo ubumhlophe be-kaolin, kuyilapho ububi buwukuthi idinga ama-reagent amakhemikhali futhi ibiza kakhulu, kalula ukuze ibangele ukungcola.
4. Ukwelashwa ngamakhemikhali
Ukuhlanzwa kwamakhemikhali: okunye ukungcola ku-kaolin kungancibilikiswa ngokukhetha yi-sulfuric acid, i-hydrochloric acid, i-nitric acid kanye nezinye izinto ezihlanzwa ukuze kususwe ukungcola. Le ndlela ingasetshenziswa ukususa i-hematite, i-limonite kanye ne-siderite ku-kaolin yezinga eliphansi.
Ukumhlophe kwamakhemikhali: ukungcola okuku-kaolin kungangcoliswa kube izinto ezincibilikayo ngokumhlophe, okungagezwa futhi kususwe ukuze kuthuthukiswe ubumhlophe bemikhiqizo ye-kaolin. Kodwa-ke, ukumhlophe kwamakhemikhali kuyabiza kakhulu futhi kuvame ukusetshenziswa ekugxileni kwe-kaolin, okudinga ukuhlanzwa okwengeziwe ngemva kokususwa kokungcola.
Ukuhlanzwa kokosa: umehluko ekwakhiweni kwamakhemikhali kanye nokusabela phakathi kokungcola kanye ne-kaolin ungasetshenziswa ekugayeni ngemagnetization, ekugayeni okushisa okuphezulu noma ekugayeni nge-chlorination ukususa ukungcola okufana nensimbi, ikhabhoni kanye ne-sulfide ku-kaolin. Le ndlela ingathuthukisa ukusabela kwamakhemikhali kwemikhiqizo ene-calcium, ithuthukise kakhulu ubumhlophe be-kaolin, futhi ithole imikhiqizo ye-kaolin esezingeni eliphezulu. Kodwa ububi bokuhlanzwa kokosa ukuthi ukusetshenziswa kwamandla kukhulu, kulula ukubangela ukungcola kwemvelo.
Ngobuchwepheshe obubodwa kunzima ukuthola ama-kaolin agxile ezingeni eliphezulu. Ngakho-ke, ekukhiqizeni kwangempela, siphakamisa ukuthi ukhethe umenzi wemishini yokucubungula amaminerali ofanelekayo. Ukwenza ukuhlolwa kokucubungula amaminerali nokusebenzisa ubuchwepheshe obuningi bokucubungula ukwandisa ikhwalithi ye-Kaolin.
Isikhathi sokuthunyelwe: Ephreli-06-2020