I-Kaolin yiminerali yodongwe eqhelekileyo kwihlabathi lendalo. Yiminerali eluncedo ye-pigment emhlophe, ngoko ke, ubumhlophe buyisalathisi esibalulekileyo esichaphazela ixabiso le-kaolin. Kukho isinyithi, izinto eziphilayo, izinto ezimnyama kunye nezinye izinto ezingcolileyo kwi-kaolin. Oku kungcola kuya kwenza i-kaolin ibonakale imibala eyahlukileyo, ichaphazela ubumhlophe. Ngoko ke i-kaolin kufuneka isuse ukungcola.
Iindlela zokucoca eziqhelekileyo ze-kaolin zibandakanya ukwahlula umxhuzulane, ukwahlula kumagnethi, ukuphaphatheka, unyango lwekhemikhali, njl. Ezi zilandelayo ziindlela zokucoca eziqhelekileyo ze-kaolin:
1. Ukwahlukana komxhuzulane
Indlela yokwahlula umxhuzulane ikakhulu ISEBENZISA umahluko woxinaniso phakathi kweminerali ye-gange kunye ne-kaolin ukususa ubumdaka obuphezulu bezinto eziphilayo ezikhanyayo, i-quartz, i-feldspar kunye neziqalelo eziqulethe i-iron, i-titanium kunye ne-manganese, ukuze kuncitshiswe impembelelo yokungcola kubumhlophe. Ii-centrifugal concentrators zihlala zisetyenziselwa ukususa ukungcola okuphezulu. Iqela le-hydrocyclone lingasetyenziselwa ukugqiba ukuhlamba kunye nokuhlolwa kwe-kaolin kwinkqubo yokuhlenga, engakwazi ukufikelela kuphela injongo yokuhlamba kunye nokuhlelwa, kodwa nokususa ukungcola okuthile, okunexabiso elihle lesicelo.
Nangona kunjalo, kunzima ukufumana iimveliso ze-kaolin ezifanelekileyo ngendlela yokubuyisela kwakhona, kunye neemveliso zokugqibela ezifanelekileyo kufuneka zifumaneke ngokuhlukana kwamagnetic, ukujikeleza, ukubala kunye nezinye iindlela.
2. Ukwahlukana kwemagneti
Phantse zonke iintsimbi ze-kaolin ziqulethe i-ore encinci ye-iron, ngokubanzi i-0.5-3%, ngokukodwa i-magnetite, i-ilmenite, i-siderite, i-pyrite kunye nezinye izinto ezingcolileyo ezinemibala. Ukwahlulwa kwemagnethi ikakhulu ISEBENZISA umahluko wemagnethi phakathi kweminerali ye-ganggue kunye ne-kaolin ukususa obu bumdaka bunemibala.
Kwimagnetite, iilmenite kunye nezinye iiminerali ezinozibuthe ezomeleleyo okanye iifayili zentsimbi ezixutywe kwinkqubo yokusetyenzwa, kusetyenziswa indlela yokwahlula ngokwemagnethi ukwahlula i-kaolin isebenza ngakumbi. Kwiiminerali ezibuthathaka zamagnetic, kukho iindlela ezimbini eziphambili: enye kukugcoba, ukuyenza ibe yizimbiwa eziqinileyo ze-iron oxide zentsimbi, emva koko iqhubela phambili ukwahlula magnetic; Enye indlela kukusebenzisa i-gradient ephezulu yemagnethi yokwahlula imagnethi indlela yokwahlula kumagnethi. Ngenxa yokuba ukuhlukana kwamagnetic akufuni ukusetyenziswa kweekhemikhali, indawo engqongileyo ayiyi kubangela ukungcola, ngoko ke kwinkqubo ye-non-metallic mineral processing isetyenziswa ngokubanzi. Indlela yokwahlukana kwamagnetic iye yasombulula ngokufanelekileyo ingxaki yokuxhatshazwa kunye nokusetyenziswa kwe-kaolin yomgangatho ophantsi ongeyoxabiso lemigodi yezorhwebo ngenxa yomxholo ophezulu wesinyithi.
Nangona kunjalo, kunzima ukufumana iimveliso ze-kaolin zomgangatho ophezulu ngokuhlukana kwamagnetic yedwa, kunye nonyango lwemichiza kunye nezinye iinkqubo ezifunekayo ukuze kuncitshiswe ngakumbi umxholo wesinyithi kwiimveliso ze-kaolin.
3. Ukuphaphatheka
Indlela yeflotation isebenzisa ubukhulu becala umahluko womzimba kunye neekhemikhali phakathi kweeminerali ze-ganggue kunye ne-kaolin ukunyanga intsimbi ekrwada ye-kaolin enokungcola okuninzi kunye nobumhlophe obuphantsi, kunye nokususa ukungcola okuqulethe intsimbi, i-titanium kunye nekhabhoni, ukuze kuqondwe ukusetyenziswa ngokupheleleyo komgangatho ophantsi. izixhobo ze-kaolin.
I-Kaolin yiminerali yodongwe eqhelekileyo. Ukungcola okufana nentsimbi kunye ne-titanium kudla ngokufakwa kumasuntswana e-kaolin, ngoko ke intsimbi ekrwada kufuneka icolwe ukusa kumlinganiselo othile wokucoleka. I-Kaolinite esetyenziswa ngokuqhelekileyo indlela yokudada ye-ultra fine particle flotation method, indlela yokudada yolwelo oluphindwe kabini kunye nendlela ekhethiweyo ye-flocculation flotation, njl.
I-Flotation inokunyusa ngokufanelekileyo ubumhlophe be-kaolin, ngelixa i-intvantvant kukuba idinga ii-reagents zemichiza kwaye ibiza kakhulu, ngokulula ukubangela ungcoliseko.
4. Unyango lwemichiza
I-Chemical leaching: obunye ubumdaka obukwi-kaolin bunokunyibilikiswa ngokukhethiweyo nge-asidi ye-sulfuric, i-hydrochloric acid, i-nitric acid kunye nezinye ii-agent ezikhuphayo ukususa ukungcola. Le ndlela ingasetyenziselwa ukususa i-hematite, i-limonite kunye ne-siderite kwi-kaolin yomgangatho ophantsi.
I-Chemical bleaching: ubumdaka obukwi-kaolin bunokufakwa kwi-oxidation kwizinto ezinyibilikayo ngokuxutywa kwe-bleaching, ezinokuhlanjwa kwaye zisuswe ukuphucula ubumhlophe beemveliso ze-kaolin. Nangona kunjalo, ukucoca ngemichiza kubiza imali eninzi kwaye ngokuqhelekileyo kusetyenziswa kwi-kaolin concentrate, efuna ukucocwa ngakumbi emva kokukhutshwa kosulelo.
Ukucocwa kokucoca: Umahluko ekubunjweni kweekhemikhali kunye nokusebenza kwakhona phakathi kokungcola kunye ne-kaolin ingasetyenziselwa ukutshisa i-magnetization, ubushushu obuphezulu bokushisa okanye ukutshisa i-chlorination ukususa ukungcola okufana nentsimbi, i-carbon kunye ne-sulfide kwi-kaolin. Le ndlela inokuphucula ukusebenza kweekhemikhali zeemveliso ze-calcined, iphucule kakhulu ubumhlophe be-kaolin, kwaye ifumane iimveliso ze-kaolin eziphezulu. Kodwa i-disadvantage yokucoca ukutshisa kukuba ukusetyenziswa kwamandla kukhulu, kulula ukubangela ukungcoliseka kwendalo.
Ngokusebenzisa itekhnoloji eyodwa kunzima ukufumana i-kaolin yodidi oluphezulu igxile. Ke ngoko, kwimveliso yokwenyani, sicebisa ukuba ukhethe umenzi wezixhobo zokulungisa izimbiwa ofanelekileyo. Ukuqhuba ulinge lokusetyenzwa kwezimbiwa kunye nokusebenzisa ubuchwepheshe bokucwangcisa ezininzi ukunyusa umgangatho weKaolin.
Ixesha lokuposa: Epreli-06-2020