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.

在它经历成作用之前，它含有燧石质的胶结成。成作用过程中，低温抵压沉积物的成，而后固结成。

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.

理利用硫酸烧渣中的铁资源，进行煤基直接还原生产金属化团块的研究，提出润磨造球-预热焙烧-磁选-冷固结成型的新工艺流程。