麻豆免费传媒

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???? ????BaSO4?? ??Sr ? Ca ????. ????BaO 65.7%,SO3 34.3%?? ????? 3.0-3.5，??? ??? ??? ???4.2-4.5g/cm3??.
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BaSO4?≥97%

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α? ?γ.? ?? ??

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??.（??） 600 400 600 1250 100-600
BaSO4(%) ≥97 ≥96 ≥96 ≥96 ≥90
SiO2(%) ≤1.0 ≤1.0 ≤1.0 ≤1.0 ≤1.5
Fe2O3(%) ≤0.20 ≤0.20 ≤0.20 ≤0.20 ≤1.0
Al2O3(%) ≤1.0 ≤1.0 ≤1.0 ≤1.0 ≤1.2
?? ? ?(%) ＜0.3 ＜0.3 ＜0.3 ＜0.3 ≤1.0
??g/cm3 ≥4.35 ≥4.2 ≥4.2 ≥4.2 ≥4.0
??(%) ≥94 ≥92 ≥93 ≥94 ~

 

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