Ingxoxo ngokusetshenziswa kwemiqulu yokugaya enengcindezi ephezulu

Ubuchwepheshe bokugaya amaroli obunomfutho omkhulu bavela kubuchwepheshe bokwenza amalahle basekuqaleni kwekhulu lama-20. Ngo-1979, uProfessor Schonert wanikeza ilungelo lobunikazi bemiqulu yokugaya enengcindezi ephezulu. Maphakathi nawo-1980, amaroli okugaya anengcindezi ephezulu aqala ukusetshenziswa emsebenzini wokuchotshozwa ensimini kasimende ukucubungula izinto ezintekenteke. Izinzuzo ezinkulu zezomnotho ziguqule ukonga amandla kanye nokwenza ngcono ukukhiqizwa kwemboni kasimende. Kusukela ngaleso sikhathi, ngokufika kobuso obusha obuqinile obungagugi, amaroli okugaya umfutho ophakeme asetshenziselwe ukucubungula amaminerali aqinile, aqinile, abrasi futhi manje asetshenziswa kabanzi kumadayimane, insimbi yensimbi, i-limestone, insimbi yethusi negolide. Ukuchotshozwa kahle nokuchotshozwa kwe-ore.

Izinzuzo zobuchwepheshe:

Uma kuqhathaniswa nenqubo yokugaya yendabuko, inqubo yokugaya ingcindezi ephezulu ibonakala ikakhulukazi ekongeni amandla, umsila wangaphambili ukuze unciphise inani lokugaya okulandelayo, kanye nokuthuthukisa inkomba yokucubungula elandelayo.

1.1 Izinzuzo zokonga amandla

Uma kuqhathaniswa nama-crushers ajwayelekile kanye nezigayo, inzuzo enkulu yobuchwepheshe yamaroli okugaya umfutho ophezulu ukonga amandla. Ngokwesipiliyoni sokufaka isicelo sezitshalo zokukhetha zasekhaya nezangaphandle, inqubo yokugaya i-roller enengcindezi ephezulu yonga u-15% kuya ku-30% uma kuqhathaniswa nenqubo yokugaya yendabuko. Uma kuqhathaniswa nemishini evamile yokuchotshozwa nokugaya, umshini wokugaywa we-high-pressure roller wenza ngendlela ehlukile endabeni, futhi usebenzisa amandla ahamba kancane ezinhlayiyeni zezinto ezibonakalayo, ukuze isakhiwo sangaphakathi sento sibhujiswe futhi izinga lokusebenzisa amandla liphezulu.

Inzuzo yokonga amandla ye-high pressure grinding rolls ibonakala eqinisweni lokuthi ngemva kokugoqwa kwezinto, ama-micro-cracks akhiqizwa ngaphakathi, okunciphisa inkomba yokugaya ibhola yokugaya okulandelayo, ukuze ukusetshenziswa kwamandla kweyunithi. ukugaya okulandelayo kuyancipha. Ngaphezu kwalokho, uma kuqhathaniswa ne-crusher evamile, isigayo se-high-pressure roller sizokwandisa okuqukethwe kwempushane futhi sinciphise ukusetshenziswa kwamandla weyunithi wokugaya okulandelayo.

1.2 Ukuphotha ngaphambilini kunciphisa inani lokugaya okulandelayo

Uma amaroli okugaya umfutho ophezulu esetshenziswa njengethuluzi lokuchoboza elicolisekileyo ngemuva kwe-crusher yesigaba sesithathu, ingabizwa ngokuthi inqubo yokugaya i-quasi, futhi usayizi wezinhlayiyana useduze nomphumela wokuzigaya/wokuzigaya ngokwakho, engahlangabezana nezidingo zokugaya okumahhadlahhadla okujwayelekile kanye nokusebenza komsila ngaphambi kwesikhathi. Izidingo zosayizi wezinhlayiyana, ukuhlukaniswa nezinye izici, kuhlanganiswe nomsila omanzi we-coarse-grain, kunganciphisa kakhulu inani lokugaya okulandelayo futhi kwandise umthamo wesistimu.

Kwamanye ama-magnetite ore ampofu kakhulu (i-TTe <15%) anosayizi wokusanhlamvu oqinile, izinzuzo zemiqulu yokugaya ingcindezi ephezulu zibonakala nakakhulu. Ngemuva kokuthi umkhiqizo ogoqiwe uhlukaniswa, kwenziwa ukugxilwa kwamagnetic pre-concentration, okungalahla inani elikhulu le-ganggue, kuthuthukise izinga le-ore yokugaya, kunciphise ukwelashwa kokugaya okulandelayo, ukunciphisa izindleko zokugqoka i-ore, futhi kuthuthukise inani lokusetshenziswa. yediphozithi kazibuthe empofu kakhulu.

1.3 Ukukhetha izinzuzo zokucubungula

Ukuchotshozwa kwamaroli okugaya ngomfutho ophezulu kuwukuchotshozwa okungama-static. Isendlalelo sezinto ezibonakalayo sihlutshiwe. Ngemuva kokuthi izinto eziphakathi kwama-roll zicindezelwe, izinto ezibonakalayo kanye nezinto ezibonakalayo zigxotshwa komunye nomunye, futhi inani elikhulu lemifantu likhiqizwa ngaphakathi kwezinhlayiya ukwenza amaminerali awusizo ekugayeni okulandelayo. Ukuhlukaniswa kusengaphambili kunganciphisa usayizi wokuphakelayo kanye nokusetshenziswa kwezidakamizwa kokukhethwa okulandelayo phakathi kwebanga elithile. Ngesikhathi esifanayo, ukukhiqizwa kwama-micro-cracks emkhiqizweni ogoqiwe kunganciphisa umkhuba wokugaya nodaka wokugaya okulandelayo futhi kuthuthukise inkomba yokucubungula elandelayo.

Kunenani elikhulu lama-micro-crack ngaphakathi komkhiqizo wokugaya we-high-pressure roll, okwenza kube wusizo ngokukhethekile enqubweni yokuvuza, okuvumela i-leachate ukuthi ingene ngokushesha futhi ijule, ikhulise isivinini sokuvuza kanye nezinga lokuvuza kwamaminerali awusizo, futhi ukunciphisa inqubo yokukhishwa kwenqwaba. Inkimbinkimbi, ukunciphisa ukutshalwa kwezimali kwangaphambili kanye nezindleko zokusebenza.

Inqubo yokugaya i-high pressure roller:

I-high-pressure roller mill ingaphulwa njengesigaba sesithathu ngemva kokuchotshozwa, noma ingasetshenziswa njengomsebenzi wesiteji sesine we-superfine ngemva kokusebenza kahle kokuchotshozwa. Inqubo yokugaya i-roller enomfutho ophezulu ingahlukaniswa ngezinhlobo ezintathu: ukuchotshozwa kwe-open-circuit, ukuchotshozwa kokubuyisela impahla enqenqemeni kanye nokuchotshozwa kwesikrini esidlidlizayo.

2.1 Vula inqubo yokuchotshozwa kwesekhethi

Inqubo yokugaya i-high-pressure roller-circuit crushing process ibhekisela kumkhiqizo wokugaya we-high-pressure roller ongena ngqo enqubweni yokusebenza elandelayo, futhi awusabuyeli enqubweni yokuchoboza yesigayo se-high-pressure roller. Umkhiqizo we-open roll ungafakwa ngokuqondile emshinini webhola ukuze ugaywe, noma ungahlukaniswa kuqala, bese umkhiqizo omahhadla ungena emshinini webhola ukuze ugaywe. Le nqubo inezinzuzo ezisobala lapho okuqukethwe kwempushana enhle yomkhiqizo ogoqiwe kuphezulu.

Inzuzo yenqubo yokuchotshozwa kwesifunda evulekile ukuthi ukugeleza kwenqubo kulula futhi kubushelelezi, uhlelo luzinzile, futhi ukusebenza nokuphatha kulula. Kodwa-ke, ngenxa yokusebenza okungahleliwe, i-granularity yomkhiqizo ayilingani, futhi umkhiqizo ogoqiwe uzohlanganiswa ne-particle encane enkulu, embi ekugayweni okulandelayo. Umthelela, ukusebenza kwangempela kwesitshalo kunganezelwa inani elifanele lamabhola amakhulu ukuze kuncishiswe izinkinga ezinjalo.

2.2 Inqubo yokuchotshozwa kokubuya kwempahla enqenqemeni

I-high-pressure roller mill edge material ebuyisela inqubo yokuchoboza ibhekisela enqubweni lapho umshini wokugaya we-high-pressure wokugaya umkhiqizo omaphakathi ungena ngokuqondile enqubweni yokusebenza elandelayo, futhi impahla ibuyiselwa kumshini wokugaya we-high-pressure ukuze iphuke futhi. Ngemva kokugingqika, umkhiqizo ophakathi ungangena ngokuqondile emshinini wokugaya ukuze ugaywe, noma ungahlukaniswa kuqala, bese umkhiqizo omahhadla ungena emshinini wokugaya ukuze ugaywe. Le nqubo inezinzuzo ezisobala lapho okuqukethwe kwempushana enhle yomkhiqizo ogoqiwe kuphezulu.

Le nqubo futhi inezinzuzo zenqubo elula nebushelelezi, uhlelo oluzinzile kanye nokusebenza nokuphatha okulula. Ingxenye yezinto ezisemaphethelweni ingalungiswa phakathi kobubanzi obungu-0 ukuya ku-50%, kodwa akwenzeki ukubuyisela wonke amaminerali angamahhadla angagoqwe umshini wokugaya umfutho ophezulu. . Uma kuqhathaniswa nokucushwa kwesistimu yesifunda evulekile, ingxenye yemikhiqizo enezinhlamvu ezimahhadla yehle kakhulu, kodwa ukuchotshozwa akukapheleli. Kukhona futhi izinto eziningi zokusanhlamvu ezinkulu emikhiqizweni egoqiwe, ezoba nemiphumela emibi ekugayeni okulandelayo.

2.3 Inqubo yokuchotshozwa kwesekethe evaliwe

I-high-pressure roller yokugaya inqubo yokuchotshozwa kwesekhethi evaliwe ihlukaniswe ngokuhlolwa okomile kanye nokuhlolwa okumanzi ngokwezindlela ezihlukene zokuhlukanisa.

Ukuhlolwa okomile kwesigayo se-high-pressure roller kudinga ukufakwa umshini wokuhlakaza ukuze kuhlakazwe ikhekhe eligoqayo, ngaphandle kwalokho ukusebenza kahle kokuhlola kuzoncishiswa kakhulu. Ukwengeza, njengoba yonke inqubo ithatha ukugaya okomile, ukuhlunga okomile nokuhlunga okomile, okuqukethwe komswakama wezinto ezibonakalayo kuyadingeka ukuba kube phezulu, futhi akufanelekile ukuphatha izinto ezinamanzi aphezulu. Ngesikhathi esifanayo, ukunakwa kufanele kukhokhwe emsebenzini wokuvikela uthuli, futhi ukususwa kothuli kuyadingeka. Imishini, njll. Le nqubo isetshenziswa kakhulu kumaminerali angewona ezensimbi kanye nensimbi equkethe udaka oluncane, kanye nezindawo ezingenawo amanzi neziwugwadule.

Isicelo senkambu:

3.1 Ukondla

(1) Umshini wokugaywa we-high-pressure roller kumele udliwe ngokuminyene ngesikhathi sokusetshenziswa. Uma okuphakelayo kuxege, amandla angalingani endaweni eqengqelekayo azonciphisa impilo yendawo eqengqelekayo.

(2) I-high-pressure roller mill kumele ibe nempushana efanele ekuphakeleni, hhayi nje into esesikrinini, ngaphandle kwalokho impilo ye-roll surface izoncipha kakhulu.

(3) I-high-pressure roller mill kufanele idliwe ngokulinganayo, ngaphandle kwalokho izobangela ukuba i-squeeze roller iphambuke futhi inciphise umphumela wokukhipha. Ezimweni ezimbi kakhulu, umphathi uzogxuma.

3.2 Ukwelashwa nge-ayoni

Uma kunensimbi kokuphakelayo kwesigayo se-high-pressure roller, impilo ye-roll surface izoncishiswa. Uma insimbi eseduze noma enkulu kunosayizi wegebe le-roll ifakwa kumshini wokugaywa we-high-pressure roll, ingxenye yomthwalo ongaphezulu izoba mkhulu kakhulu, okuzoholela ekulimaleni kwe-stud noma indawo yokugoqa. Uma kunensimbi esiphakelini kuya kumshini wokugaywa we-high pressure, izinyathelo ezilandelayo zingathathwa ukuze kuvikelwe indawo engaphezulu.

(1) Faka imitshina yensimbi kanye nezinto ezikhipha insimbi ebhandeni lesiphakeli lesigayo se-high pressure roller.

(2) Uma kuhlolwa umjikelezo ovaliwe, isikhiphi sensimbi singafakwa ngaphezu kokuphela kokukhishwa kwento esisefweni. Ngalesi sikhathi, izinto eziku-sieve zisesimweni esixekethile, esingasusa ngokuphumelelayo amaminerali ensimbi kazibuthe lapho.

(3) Enqubweni yomshini wokuzigaya/wokuzigaya ngokwakho, uma isigayo se-cone kanye ne-high-pressure roller mill kuhlanganiswa njengethuluzi lokuchoboza amatshe aqinile, isikhiphi sensimbi esigobile singafakwa ekupheleni kokukhipha. isigayo (kuphela izinto ezingezona uzibuthe nezibuthaka kazibuthe) Amaminerali), uku-ayina umshini ozigayayo/ozigaya kancane, kanye nokufaka izitholi zensimbi nezikhiphi zensimbi ebhandeni elibuyayo lokubuyisela ukuze kuqinisekiswe ukuthi zonke izinto zensimbi izinto zokubuyisela ziyasuswa.

(4) Ohlelweni lokususa insimbi, isikhiphi sensimbi kufanele sisetshenziswe sihlangene nomtshina wensimbi, ngoba isikhiphi sensimbi singasusa kuphela insimbi kazibuthe esitokisini sokuphakelayo, futhi ngensimbi engeyona i-magnetic, kufanele isuswe ngesandla. umtshina wensimbi.

3.3 Uhlelo lwe-Bypass

Njengamanje, izimayini eziningi ezinemibandela zimise uhlelo lokudlula ohlelweni lwe-high-pressure roller mill, olungakwazi ukubambezela ukukhiqiza lapho umshini wokugaya umfutho ophezulu wehluleka, ulungisa ngezikhathi ezithile futhi uthatha indawo ye-roller surface. Isistimu ye-bypass ifanele izigaba ezintathu zokuchotshozwa kwesekhethi evaliwe + i-high-pressure roller mill ultra-fine crushing process, endaweni yokupaka yomshini wokucindezela ophezulu noma ngaphansi kwezimo ezithile ezikhethekile (njengemvula eqhubekayo, umswakama womoya owedlulele, ukucindezela okuphezulu. i-roller mill isebenza kahle), izinto zokwakha Ingafakwa ngokuqondile kumshini wokugaya amabhola olandelayo ukuze ukukhiqizwa kuqhubeke.