1. Menene refractory?
Abubuwan da ke jujjuyawa gabaɗaya suna magana ne akan kayan da ba na ƙarfe ba tare da juriyar wuta fiye da 1580 ℃.Ya haɗa da ma'adanai na halitta da samfuran daban-daban waɗanda aka yi ta wasu matakai bisa ga takamaiman buƙatun buƙatun.Yana da wasu kaddarorin inji mai zafi mai zafi da kwanciyar hankali mai kyau.Abu ne mai mahimmanci don kowane nau'in kayan aikin zafi mai zafi.Yana da faffadan amfani.
2. Nau'in refractories
1. Acid refractories yawanci koma zuwa refractories tare da SiO2 abun ciki fiye da 93%.Babban fasalinsa shine yana iya tsayayya da yashewar acid slag a babban zafin jiki, amma yana da sauƙin amsawa tare da slag alkaline.Ana amfani da tubalin silica da tubalin yumbu a matsayin masu hana acid.Silica tubali samfurin siliki ne mai ɗauke da fiye da 93% silicon oxide.Abubuwan da ake amfani da su sun haɗa da silica da bulo na siliki na sharar gida.Yana da juriya mai ƙarfi ga yashwar acid slag, babban nauyi mai laushi zafin jiki, kuma baya raguwa ko ma faɗaɗa kadan bayan maimaita calcination;Duk da haka, yana da sauƙi don rushewa ta hanyar alkaline slag kuma yana da ƙarancin juriya na thermal.An fi amfani da bulo na siliki a cikin tanda na coke, tanderun gilashi, tanderun ƙarfe na acid da sauran kayan aikin zafi.Tushen yumbu yana ɗaukar yumbu mai jujjuyawa azaman babban kayan albarkatun ƙasa kuma ya ƙunshi 30% ~ 46% alumina.Yana da raunin acidic refractory tare da kyakkyawan juriya na thermal vibration da juriya na lalata ga slag acid.Ana amfani da shi sosai.
2. Alkaline refractories gabaɗaya suna magana ne akan refractories tare da magnesium oxide ko magnesium oxide da calcium oxide a matsayin manyan abubuwan.Wadannan refractories da high refractoriness da karfi juriya ga alkaline slag.Misali, bulo na magnesia, bulo na magnesia, bulo na magnesia, bulo na aluminium, bulo na dolomite, bulo na forsterite, da sauransu. Ana amfani da shi ne a cikin tanderun karfen alkaline, tanderun da ba na karfe ba, da murhun siminti.
3. Aluminum silicate refractories koma zuwa refractories tare da SiO2-Al2O3 a matsayin babban bangaren.Dangane da abun ciki na Al2O3, ana iya raba su zuwa semi siliceous (Al2O3 15 ~ 30%), clayey (Al2O3 30 ~ 48%) da babban alumina (Al2O3 mafi girma fiye da 48%).
4. Narkewa da simintin gyare-gyare yana nufin samfuran da ke da simintin gyare-gyare tare da wani simintin simintin gyaran kafa bayan narkar da batch a babban zafin jiki ta wata hanya.
5. Neutral refractories koma zuwa refractories da ba su da sauki amsa tare da acidic ko alkaline slag a high zafin jiki, kamar carbon refractories da chromium refractories.Wasu kuma suna danganta manyan alumina refractories zuwa wannan rukuni.
6. Na musamman refractories sababbin inorganic nonmetallic kayan ɓullo da bisa na gargajiya tukwane da janar refractories.
7. Amorphous refractory wani cakuda ne wanda ya hada da refractory aggregate, foda, binder ko wasu admixtures a cikin wani rabo, wanda za'a iya amfani da shi kai tsaye ko bayan shirye-shiryen ruwa mai dacewa.Unshaped refractory wani sabon nau'i ne na refractory ba tare da calcination, kuma ta wuta juriya ba kasa da 1580 ℃.
3. Menene Refractories akai-akai?
Abubuwan da aka saba amfani da su sun haɗa da tubalin silica, bulo na silica, bulo mai yumbu, bulo mai tsayi, bulo na magnesia, da sauransu.
Musamman kayan da ake amfani da su sau da yawa sun haɗa da bulo na AZS, bulo na corundum, tubalin magnesium chromium kai tsaye, tubalin silicon carbide, tubalin silicon nitride bonded silicon carbide tubalin, nitride, silicide, sulfide, boride, carbide da sauran abubuwan da ba oxide ba;Calcium oxide, chromium oxide, alumina, magnesium oxide, beryllium oxide da sauran kayan refractory.
Abubuwan da ake amfani da su akai-akai na thermal insulation da kayan haɓaka sun haɗa da samfuran diatomite, samfuran asbestos, allon insulation na thermal, da sauransu.
Abubuwan da ake amfani da su akai-akai na amorphous sun haɗa da kayan gyaran murhu, kayan ramuwar wuta mai jure wuta, simintin wuta, robobi masu jure wuta, laka mai jure wuta, kayan bindiga mai jure wuta, kayan aikin gyara wuta, rufin wuta, wuta mai haske. - resistant castables, gun laka, yumbu bawuloli, da dai sauransu.
4. Menene kaddarorin jiki na refractories?
Kaddarorin jiki na refractories sun haɗa da kaddarorin tsari, kaddarorin thermal, kaddarorin inji, kaddarorin sabis da kaddarorin aiki.
The tsarin Properties na refractories sun hada da porosity, girma yawa, ruwa sha, iska permeability, pore size rarraba, da dai sauransu.
Thermal Properties na refractories sun hada da thermal watsin, thermal fadada coefficient, takamaiman zafi, zafi iya aiki, thermal watsin, thermal watsi, da dai sauransu.
The inji Properties na refractories sun hada da matsawa ƙarfi, tensile ƙarfi, flexural ƙarfi, torsional ƙarfi, karfi ƙarfi, tasiri ƙarfi, sa juriya, creep, bond ƙarfi, na roba modulus, da dai sauransu.
Ayyukan sabis na refractories sun haɗa da juriya na wuta, zazzabi mai laushi mai nauyi, canjin layi na reheating, juriya na thermal, juriya na juriya, juriya acid, juriya na alkali, juriya na hydration, juriyawar CO yashwa, haɓakawa, juriya na iskar shaka, da sauransu.
Ayyukan aiki na kayan haɓakawa sun haɗa da daidaito, slump, fluidity, plasticity, cohesiveness, resilience, coagulability, harddenability, da dai sauransu.
Lokacin aikawa: Maris 15-2022