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。
2
The relations between grain size of iron-bearing material and anthracite, amount of lime-rock and the percentage metallization in the process of DRI production are researched with experiments.
通过实验研究了生产海绵铁工艺中 含铁料粒度、 无烟煤粒度、石灰石用量与海绵铁金属化率之间 的关系。
3
Based upon the working principle of lime-rock pile, design and construction method of lime-rock pile reinforcing soft soil foundation, corresponding treatment measures to common problems are proposed.