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Our company produce all kinds of nozzle well blocks fit for various ladles, the main quality are: corundum, chrome-corundum, magnesia-carbon, aluminum-spinel-carbon, high alumina and magnesia-chrome-carbom. The products have the advantages of structural stability, strong corrosion resistant, good thermal shock resistance stability and long service life etc. The physical and chemical properties of ladle nozzle well block are as follow: ITEMProperties of Well BlocksCorundumGYZChrome-CorundunLGZAl-Spinel-CMgO-Cr-CMGZLJ-1LJ-2Al2O3，%≥939075（60）-C，% ≥--5310Cr2O3，% ≥-2.5--2MgO，% ≥--8-70A.P.,%≤2322141414CCS，MPa≥5060303025B.D.，g/cm3--3.002.85-Remark, The number in square bracket only used when the dimension of the well block bigger than 170mm. In LJ-2（60）is the total amounts of Al2O3 and MgO. ItemPhysical and Chemical Properties of Well BlockCorundum GYZChromiun-CorundunLGZMgO-C MTZAluminiuM-Spinel-CLight Burnt Phosphoric acid GLZ MgO-Chr-CMGZLJ-1LJ-2Al2O3% ≥939075(60)75C% ≥105310Cr2O3% ≥2.52MgO% ≥70870A.P.% ≤23221414142414C.C.S. MPa≥50602530305025B.D. g/cm3 ≥2.653.02.852.70