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support connection hooks using for undermine

Refinery

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manganese

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silicon -iron

manganese-iron silicon-iron

crystal silicon

 SI-AL-BA iron iron mine powder

anti-grinding cast iron
FeMn>=65%,
Si<4.5%		 Si72-80%
,Al<1.5%,
P<0.04%,
S<0.02%		 Si>=98.5% SiBF-1-9 Fe>=64%

ball grinding life span is ten times  longer than steel ball

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SI-AL-BA iron

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anti-grinding iron ball

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fine iron powder

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crystal silicon

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