An yi alumina mai launin ruwan kasa da aka haɗa da bauxite mai inganci a matsayin kayan ƙasa, anthracite da kuma ƙarfe. Ana yin sa ne ta hanyar narkewar arc a zafin 2000°C ko sama da haka. Ana niƙa shi kuma ana sanya shi a cikin filastik ta hanyar injin niƙa kai, an zaɓi shi ta hanyar maganadisu don cire ƙarfe, an tace shi cikin girma dabam-dabam, kuma yanayinsa yana da yawa kuma mai tauri. Ana iya amfani da ƙananan ƙwayoyin halitta masu tsayi, waɗanda suka dace da samar da yumbu, resin mai jure wa da niƙa, gogewa, yashi mai laushi, simintin daidai, da sauransu, don ƙera refractories masu inganci.
Siffofin Sinadarai da Jiki | ||||||
| Abubuwa | Al2O3 | Fe2O3 | SiO2 | Yawan yawa | Launi | Aikace-aikace |
| Darasi na I | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Maroon | Kayan da ke da tsaurin kai, |
| Aji na II | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Ƙwayar baƙi | gogewa mai kyau |
| Aji na III | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Foda mai launin toka | Gogewa, niƙa |
| Aji na Huɗu | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Ƙwayar baƙi | Nika, yankewa, da kuma yankan yashi |
| Aji na V | ≥95 | ≤0.3 | ≤1.5 | 3.85 | Foda mai launin toka | Gogewa, niƙa |
Babban juriya, Babban juriya a ƙarƙashin kaya
Kyakkyawan juriya ga slag da juriya ga tsatsa
Babban yawa, ƙarancin porosity juriyar scruing
Kyakkyawan kwanciyar hankali na thermal
Babban ƙarfi da juriyar lalacewa
Kyakkyawan juriya ga aikin flake
Ƙarfin zafi mai kyau
1. Alumina mai launin ruwan kasa ya dace da yin kayan aikin gogewa na yumbu da resin, wanda ake amfani da shi don niƙa ƙarfe masu ƙarfi mai ƙarfi, kamar ƙarfen carbon, ƙarfe mai amfani da ƙarfe, ƙarfe mai laushi da tagulla mai tauri da sauransu.
2. Ana amfani da shi sosai a matsayin gogewa, tsaftacewa, niƙa, goge ƙarfe daban-daban, gilashi, roba, da masana'antar mold.
3. Haka kuma ana iya amfani da shi azaman kayan da ke hana ruwa gudu.
Idan kuna da wasu tambayoyi. Da fatan za ku iya tuntuɓar mu.