I-Refractory Castables For Cement Rotary Kiln

I-Refractory Castables For Cement Rotary Kiln

1. Ifayibha yensimbi eqinisiwe yokusakazwa kwe-refractory yeziko likasimende
Ama-castable aqiniswe nge-fiber yensimbi ikakhulukazi afaka imicu yensimbi engagqwali engashisi entweni, ukuze impahla ibe namandla aphakeme kanye nokumelana nokushaqeka okushisayo, ngaleyo ndlela kwandise ukumelana nokugqokwa nempilo yesevisi yezinto ezibonakalayo. Izinto ezisetshenziswayo ikakhulukazi zisetshenziselwa izingxenye ezimelana nezinga lokushisa eliphezulu ezifana nomlomo we-kiln, umlomo wokuphakela, i-pier engagugi kanye ne-power plant boiler lining.

2. Izinsimbi ezincibilikisiwe zikasimende ezimbanjeni zikasimende
Ama-castables aphansi kasimende aphikisayo ikakhulukazi afaka i-alumina ephezulu, i-mullite kanye ne-corundum refractory castables. Lolu chungechunge lwemikhiqizo lunezici zamandla aphezulu, i-anti-scouring, ukumelana nokugqoka nokusebenza okuhle kakhulu. Ngasikhathi sinye, izinto ezisetshenziswayo zingenziwa zibe izinto eziqhumayo ezikwazi ukubhaka ngokushesha ngokuvumelana nezidingo zesikhathi sokubhaka somsebenzisi.

3. Izindwangu eziqinile ezimelana ne-alkali eziko likasimende
Ama-castable amelana ne-alkali aphezulu anokumelana okuhle nokuguguleka ngamagesi ane-alkaline kanye ne-slag, futhi abe nempilo ende yesevisi. Le nto isetshenziselwa ikakhulukazi izembozo zeminyango kahhani, izithando zomlilo ezibolayo, amasistimu okushisa ukushisa, amasistimu okuphatha, njll. kanye nezinye izinsimbi zezimboni.

Indlela yokwakha ye-high-aluminium low-cement castable for rotary kiln lining
Ukwakhiwa kwe-high-aluminium low-cement castable for rotary kiln lining kudinga ukunakwa okukhethekile kulezi zinqubo ezinhlanu ezilandelayo:

1. Ukunqunywa kwamalunga okwandisa
Ngokusekelwe kokuhlangenwe nakho kwangaphambilini kokusebenzisa ama-castables anosimende ophansi we-aluminium ephezulu, amajoyinti okunweba ayisici esiyinhloko esithinta impilo yesevisi yama-rotary kiln castable linings. Amajoyinti okwandisa ngesikhathi sokuthululwa kwe-rotary kiln linings anqunywa kanje:

(1) Amajoyinti ayisiyingi: izigaba ezingu-5m, i-20mm ye-aluminium silicate fibre ezwakalayo ihlanganiswe phakathi kwezinto eziphonswayo, futhi imicu iyahlanganiswa ngemva kokunwetshwa ukuze ivimbele ukucindezeleka kokunwetshwa.

(2) Amajoyinti ayisicaba: Yonke imicu emithathu ye-castable ihlanganiswa neplywood ejulile engu-100mm endaweni eyindilinga yangaphakathi, futhi ilunga lishiywa ekugcineni kokusebenza, libe yimicu engu-6 isiyonke.

(3) Ngesikhathi sokuthululwa, izikhonkwane zokukhipha umoya ezingama-25 zisetshenziswa imitha-skwele ngayinye ukuze kukhululwe inani elithile lokucindezeleka kokwandisa kuyilapho kuqeda umlilo.

2. Ukunqunywa kwezinga lokushisa lokwakha
Izinga lokushisa elifanele lokwakha lama-castables anosimende ophansi we-aluminium ephezulu ngu-10 ~ 30 ℃. Uma izinga lokushisa le-ambient liphansi, kufanele kuthathwe izinyathelo ezilandelayo:

(1) Vala indawo ezungezile yokwakha, wengeze izindawo zokufudumeza, futhi uvimbele ngokuqinile ukubanda.

(2) Sebenzisa amanzi ashisayo ku-35-50 ℃ (okunqunywa ukudlidliza kokuhlolwa kokuthela endaweni) ukuze uxube okokusebenza.

3. Ukuxuba
Nquma inani lokuxuba ngesikhathi esisodwa ngokusho komthamo we-mixer. Ngemuva kokuthi inani lokuxuba linqunywa, engeza izinto zokuphonsa esikhwameni kanye nezithasiselo zephakheji ezincane esikhwameni ku-mixer ngesikhathi esifanayo. Okokuqala qala i-mixer ukuze yome-mix imizuzu engu-2 ~ 3, bese ufaka u-4/5 wamanzi akaliwe kuqala, ugovuze imizuzu engu-2 ~ 3, bese unquma i-1/5 esele yamanzi ngokusho kwe-viscosity yodaka. . Ngemuva kokuxuba ngokugcwele, ukuthululwa kokuhlolwa kuyenziwa, futhi inani lamanzi elengeziwe linqunywa ngokuhambisana nokudlidliza kanye nesimo se-slurry. Ngemuva kokuthi inani lamanzi elengeziwe selinqunyiwe, kufanele lilawulwe ngokuqinile. Ngenkathi uqinisekisa ukuthi udaka lunganyakaziswa, amanzi amancane ngangokunokwenzeka kufanele angezwe (inani lereferensi yokwengezwa kwamanzi kulokhu okuphonswayo ngu-5.5% -6.2%).

4. Ukwakha
Isikhathi sokwakhiwa kwe-high-aluminium low-cement castable cishe imizuzu engama-30. Izinto eziphelelwe amanzi emzimbeni noma ezijiyile azikwazi ukuxutshwa namanzi futhi kufanele zilahlwe. Sebenzisa induku yokudlidliza ukuze ufinyelele ukuminyana okunodaka. Induku edlidlizayo kufanele igcinwe ukuze kuvinjwe induku eyisipele ukuthi isebenze lapho induku edlidlizayo ihluleka.
Ukwakhiwa kwezinto ezigaywayo kufanele kwenziwe ngamapheshana eduze kwe-axis ye-rotary kiln. Ngaphambi kokuthululwa kwe-strip ngayinye, indawo yokwakha kufanele ihlanzwe futhi kungabikho uthuli, i-welding slag nezinye izinsalela okufanele zishiywe. Ngesikhathi esifanayo, hlola ukuthi i-welding ye-anchor kanye nokwelashwa kwepende ye-asphalt yangaphezulu kusendaweni. Uma kungenjalo, izinyathelo zokulungisa kufanele zithathwe.
Ekwakhiweni kwe-strip, ukwakhiwa kwe-strip casting body kufanele kuthululwe ngokuvulekile kusuka kumsila we-ovini kuya ekhanda lehhavini phansi komzimba wesithando. Ukusekelwa kwesifanekiso kufanele kwenziwe phakathi kwehange nepuleti lensimbi. Ipuleti lensimbi nehange kufakwe ngokuqinile ngamabhulokhi okhuni. Ubude be-formwork yokusekela bungu-220mm, ububanzi bungu-620mm, ubude bungu-4-5m, kanti i-engeli emaphakathi ingu-22.5°.
Ukwakhiwa kwendikimba yesibili yokuphonsa kufanele kwenziwe ngemuva kokuthi umcu ekugcineni usethiwe futhi isikhunta sisusiwe. Ngakolunye uhlangothi, ithempulethi emise okwe-arc isetshenziselwa ukuvala ukukhishwa kusukela ekhanda lehhavini kuya emsileni womlilo. Okunye kuyafana.
Lapho okubunjiweyo kudlidliza, udaka oluxubile kufanele lwengezwe esibunjeni sesondo ngenkathi sidlidliza. Isikhathi sokudlidliza kufanele silawulwe ukuze kungabikho amabhamuza asobala ebusweni bomzimba wokulingisa. Isikhathi sokudiliza kufanele sinqunywe izinga lokushisa elizungezile lendawo yokwakha. Kudingekile ukuqinisekisa ukuthi ukudilizwa kwenziwa ngemuva kokuthi izinto zokuphonsa ekugcineni zisethiwe futhi zinamandla athile.

5. Baking of lining
Izinga lokubhaka le-rotary kiln lining lithinta ngqo impilo yesevisi ye-lining. Enkambweni yokubhaka yangaphambilini, ngenxa yokuntuleka kokuhlangenwe nakho okuvuthiwe nezindlela ezinhle, indlela yokujova amafutha anzima ukuze kushiswe isetshenziswe ezinkambisweni zokubhaka ezisezingeni eliphansi, izinga lokushisa eliphakathi kanye nezinga eliphezulu lokushisa. Izinga lokushisa kwakunzima ukulawula: lapho izinga lokushisa lidinga ukulawulwa ngaphansi kuka-150 ℃, amafutha anzima akulula ukuwashisa; lapho izinga lokushisa lingaphezu kuka-150 ℃, isivinini sokushisisa siyashesha kakhulu, futhi nokusabalalisa kwezinga lokushisa eziko akulingani kakhulu. Izinga lokushisa lolwelwesi lapho uwoyela osindayo lishiswa khona licishe libe ngu-350~500℃ ngaphezulu, kuyilapho izinga lokushisa lezinye izingxenye liphansi. Ngale ndlela, i-lining kulula ukuqhuma (i-lining yangaphambilini ekhonjiwe iqhume ngesikhathi sokubhaka), okuthinta impilo yesevisi ye-lining.