The stopper has the advantages of good erosion resistance and erosion resistance, stable flow control during casting, tight closure after casting, etc.
Stopper rod physical and chemical indicators
Physical and chemical indicators:
Tūemi | Taurangi | |
SB45 | SB40 | |
Ko Al2O3 % | ≥45 | ≥40 |
C % | ≥20 | ≥25 |
Flexural Strength MPa | ≥5.5 | ≥5.5 |
Apparent porosity % | ≤19 | ≤19 |
Bulk density g/cm3 | ≥2.36 | ≥2.2 |
Head Part:
Tūemi | Taurangi | ||||||
MC65 | MC60 | AC70 | AC65 | AC60 | MA70 | MA65 | |
Ko Al2O3 % | / | / | ≥70 | ≥65 | ≥60 | / | / |
MgO % | ≥65 | ≥60 | // | / | / | / | / |
Ko Al2O3+MgO % | / | / | / | // | ≥70 | ≥65 | |
C % | ≥9 | ≥12 | ≥9 | ≥12 | ≥15 | ≥8 | ≥10 |
Bulk density g/cm3 | ≥2.45 | ≥2.4 | ≥2.65 | ≥2.6 | ≥2.55 | ≥2.6 | ≥2.45 |
Te porosity % | ≤19 | ≤19 | ≤19 | ≤19 | ≤19 | ≤19 | ≤19 |
Rongsheng Kamupene Whakataki

Ko te Kamupene Rongsheng he kaiwhakarato ngaio o nga taonga whakaheke, me 10 tau o te wheako kaweake, Te kawe mai i te neke atu i te 80 whenua. The main products of Rongsheng Company include various refractory bricks, nga mea whakaahuru kore ahua, Nga rauemi metallurgical, thermal insulation materials, me etahi atu.
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