I-Kaolin yiminerali yodongwe eqhelekileyo kwihlabathi lendalo. Yiminerali eluncedo kwi-pigment emhlophe, ngoko ke, ubumhlophe buphawu olubalulekileyo oluchaphazela ixabiso le-kaolin. Kukho isinyithi, izinto eziphilayo, izinto ezimnyama kunye nezinye izinto ezingcolileyo kwi-kaolin. Ezi zinto zingcolileyo ziya kwenza i-kaolin ibonakale ngemibala eyahlukeneyo, ichaphazela ubumhlophe. Ngoko ke i-kaolin kufuneka isuse izinto ezingcolileyo.
Iindlela zokucoca eziqhelekileyo ze-kaolin ziquka ukwahlulahlula amandla omhlaba, ukwahlulahlula ngemagnethi, ukutyibilika, unyango ngamakhemikhali, njl. Ezi zilandelayo ziindlela zokucoca eziqhelekileyo ze-kaolin:
1. Ukwahlulwa kwamandla omxhuzulane
Indlela yokwahlulahlula amandla omhlaba ISEBENZISA ikakhulu umahluko woxinano phakathi kwe-gangue mineral kunye ne-kaolin ukususa ukungcola okuphezulu kokukhanya kwezinto eziphilayo, i-quartz, i-feldspar kunye nezinto eziqulethe i-iron, i-titanium kunye ne-manganese, ukuze kuncitshiswe impembelelo yokungcola kumhlophe. Ii-centrifugal concentrators zihlala zisetyenziselwa ukususa ukungcola okuphezulu koxinano. Iqela le-hydrocyclone lingasetyenziselwa ukugqiba ukuhlamba kunye nokuhlola i-kaolin kwinkqubo yokuhlela, engenakufezekisa injongo yokuhlamba kunye nokubeka amanqaku kuphela, kodwa ikwasusa ukungcola okuthile, okunexabiso elifanelekileyo lokusetyenziswa.
Nangona kunjalo, kunzima ukufumana iimveliso ze-kaolin ezifanelekileyo ngendlela yokwahlulahlula, kwaye iimveliso zokugqibela ezifanelekileyo kufuneka zifunyanwe ngokwahlukana kwemagnethi, ukutyibilika, i-calcination kunye nezinye iindlela.
2. Ukwahlulwa kweMagnetic
Phantse zonke ii-ore ze-kaolin ziqulathe ubungakanani obuncinci be-iron ore, ngokubanzi yi-0.5-3%, ikakhulu yi-magnetite, i-ilmenite, i-siderite, i-pyrite kunye nezinye izinto ezingcolisayo ezinombala. Ukwahlulwa kwe-magnetic KUSEBENZISA ikakhulu umahluko we-magnetic phakathi kwe-gangue mineral kunye ne-kaolin ukususa ezi zinto zingcolisayo ezinemibala.
Kwi-magnetite, i-ilmenite kunye nezinye iiminerali ezinamandla zemagnethi okanye ii-iron filings ezixutywe kwinkqubo yokucubungula, ukusebenzisa indlela yokwahlula imagnethi ukwahlula i-kaolin kusebenza ngakumbi. Kwiminerali ezibuthathaka zemagnethi, kukho iindlela ezimbini eziphambili: enye kukubhaka, ukuyenza ibe yiminerali enamandla ye-iron oxide ye-magnetic, emva koko iqhubeke nokwahlula imagnethi; Enye indlela kukusebenzisa indlela yokwahlula imagnethi ye-magnetic field ephezulu ye-gradient yokwahlula imagnethi. Ngenxa yokuba ukwahlula imagnethi akudingi ukusetyenziswa kwee-arhente zeekhemikhali, okusingqongileyo akuyi kubangela ungcoliseko, ngoko ke kwinkqubo yokucubungula izimbiwa ezingezizo ezesinyithi kusetyenziswa kakhulu. Indlela yokwahlula imagnethi isombulule ngempumelelo ingxaki yokusetyenziswa kunye nokusetyenziswa kwe-kaolin yodidi oluphantsi engeyoxabiso lokumbiwa kwezorhwebo ngenxa yomxholo ophezulu we-iron ore.
Nangona kunjalo, kunzima ukufumana iimveliso ze-kaolin ezikumgangatho ophezulu ngokwahlulahlula ngemagnethi kuphela, kwaye unyango lweekhemikhali kunye nezinye iinkqubo ziyafuneka ukunciphisa ngakumbi umxholo wesinyithi kwiimveliso ze-kaolin.
3. Ukudada
Indlela yokutyibiliza isebenzisa ikakhulu umahluko wezinto ezibonakalayo noweekhemikhali phakathi kweeminerali ze-gangue kunye ne-kaolin ukunyanga i-kaolin ore eluhlaza ngokungcola okungakumbi kunye nobumhlophe obuphantsi, kunye nokususa ukungcola okuqulethe isinyithi, i-titanium kunye nekhabhoni, ukuze kuphunyezwe ukusetyenziswa ngokupheleleyo kwezixhobo ze-kaolin ezikumgangatho ophantsi.
I-Kaolin yiminerali yodongwe eqhelekileyo. Izinto ezingcolileyo ezifana nentsimbi kunye ne-titanium zihlala zifakwe kwiisuntswana ze-kaolin, ngoko ke i-ore eluhlaza kufuneka igaywe ukuya kwinqanaba elithile lokucoleka. Indlela ye-Kaolinite esetyenziswa rhoqo kwi-flotation method ye-ultra fine particle flotation, indlela ye-double fluid layer flotation method kunye nendlela ye-selective flocculation flotation method, njl.
Ukudada kunokunyusa ubumhlophe be-kaolin ngempumelelo, ngelixa ingxaki ikukuba ifuna ii-reagents zeekhemikhali kwaye ibiza kakhulu, ngokulula ukubangela ungcoliseko.
4. Unyango lwekhemikhali
Ukukhuhla ngekhemikhali: ezinye izinto ezimdaka kwi-kaolin zinokunyibilikiswa ngokukhetha yi-sulfuric acid, i-hydrochloric acid, i-nitric acid kunye nezinye izinto ezikhupha izinto ezimdaka ukuze kususwe izinto ezimdaka. Le ndlela ingasetyenziselwa ukususa i-hematite, i-limonite kunye ne-siderite kwi-kaolin ekumgangatho ophantsi.
Ukunyibilikisa iikhemikhali: ukungcola okukwi-kaolin kunokuguqulwa kube zizinto ezinyibilikayo ngokunyibilikisa iikhemikhali, ezinokuhlanjwa zisuswe ukuze kuphuculwe ubumhlophe beemveliso ze-kaolin. Nangona kunjalo, ukunyibilikisa iikhemikhali kubiza kakhulu kwaye kudla ngokusetyenziswa kwi-kaolin concentrate, efuna ukucocwa ngakumbi emva kokususwa kweentsholongwane.
Ukucocwa kwe-roasting: umahluko kwi-chemical composition kunye ne-reactivity phakathi kokungcola kunye ne-kaolin ingasetyenziselwa ukucocwa kwe-magnetization, ukucocwa kwi-high-temperature okanye ukucocwa kwe-chlorination ukususa ukungcola okufana ne-iron, i-carbon kunye ne-sulfide kwi-kaolin. Le ndlela inokuphucula i-chemical reactivity yeemveliso ezine-calcium, iphucule kakhulu ubumhlophe be-kaolin, kwaye ifumane iimveliso ze-kaolin eziphezulu. Kodwa ingxaki yokucocwa kwe-roasting kukuba ukusetyenziswa kwamandla kukhulu, kulula ukubangela ungcoliseko lokusingqongileyo.
Ngobuchwepheshe obunye kunzima ukufumana ii-kaolin concentrates ezikumgangatho ophezulu. Ke ngoko, kwimveliso yokwenyani, sicebisa ukuba ukhethe umenzi wezixhobo zokucubungula izimbiwa ezifanelekileyo. Ukwenza uvavanyo lokucubungula izimbiwa kunye nokusebenzisa ubuchwepheshe obuninzi bokucubungula ukuphucula umgangatho weKaolin.
Ixesha lokuthumela: Epreli-06-2020