The green ball strength can be improved by adding slaked lime, bentonite and anthracite fines.
添加消石灰，膨润土及无烟煤粉均能提高尘泥渣生球的强度。
It is showed from the result that with concentrate iron fines being grained, lime-rock added in and anthracite finely ground, the percentage metallization can get higher greatly.
结果表明：铁精粉制粒后、加入石灰石、无烟煤细磨后，金属化率大幅度提高。
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