Aimed at utilization of iron resources in pyritic slag,the study on production of metallized agglomerate with pyritic slag through coal based DR process was conducted.

为合硫酸烧渣中的铁资源，进行了煤基直接还原生产金属化团块的研究，提出了润磨造球-热焙烧-磁选-冷固结型的新工艺流程。

This rock contained chalcedonic cement before it underwent diagenesis, a process where low temperatures and low pressures alter the content of sediments before they finally lithify, or turn into rock.

在它经历岩作之前，它含有燧石质的胶结。岩作过程中，低温抵压改变了沉积物的，而后固结岩。