公开(公告)号：WO2017157908A1

公开(公告)日：2017-09-21

申请号：PCT/EP2017/055940

申请日：2017-03-14

Applicant: SAHARKHIZ, Mohammad Reza ,  RASSA, Sohail ,  MOHAMMADI ROSHANDEH, Sohrab ,  BERGMANN, Michael

Inventor： SAHARKHIZ, Mohammad Reza ,  RASSA, Sohail ,  MOHAMMADI ROSHANDEH, Sohrab

IPC: C21B13/00 ,  C21B13/14 ,  C21B11/02

CPC classification number: C21B13/0093 ,  C21B11/02 ,  C21B13/0046 ,  C21B13/143 ,  C21B13/146 ,  Y02P10/136 ,  Y02P10/212

Abstract: In order to provide a solution which provides a direct reduced iron product which has an improved performance in respect to its capability to be transported over long distances and in respect to its melting properties in primary metallurgical steel making processes and which is suitable as a scrap substituting material, a method for producing a capsulated pressed reduced iron compound (5) is proposed, which compound (5) is completely encapsulated by a, preferably metallic, covering embodying material (4), wherein the method comprises the steps of reducing iron ore in an iron ore direct reduction shaft furnace and subjecting a certain amount of the thus obtained reduced iron or sponge iron (2) to a cold briquetting or cold forming process executed in a forming device, wherein the certain amount of reduced iron or of sponge iron (2) is delivered to at least one mould arranged in the forming device, is exposed to a compressive force and press-formed to constitute the capsulated pressed reduced iron compound (5) having a shape corresponding to the form provided by the at least one mould arranged in the forming device and having an apparent density of greater than 5.0 g/cm 3 , and wherein the certain amount of reduced iron or sponge iron(2) is completely encapsulated either by means of the covering embodying material (4) being provided before or during the certain amount of reduced iron or sponge iron is exposed to the compressive force or by means of the covering embodying material (4) being provided immediately after the certain amount of reduced iron or sponge iron (2) is press-formed to embody the form of the iron compound (5). During above process certain additives and/or CDRI fines and/or non-contaminant metal chips and/or secondary metallurgy additives in defined ratios could be included in the invented capsulated pressed reduced iron compound (5) CAPRI.

Abstract translation: 为了提供一种解决方案，该方案提供了一种直接还原铁产品，该产品在长距离输送能力方面以及在主要冶金炼钢过程中的熔化性能方面具有改进的性能 （5）完全被优选金属覆盖的实施材料（4）包封的方法，其中所述方法 包括以下步骤：在铁矿石直接还原竖炉中还原铁矿石，并将一定量由此获得的还原铁或海绵铁（2）在成形装置中进行冷压块或冷成形工艺，其中一定量 的还原铁或海绵铁（2）被输送到布置在成形装置中的至少一个模具中，暴露于压缩力并压制成型以形成囊体 （5），所述还原铁化合物（5）的形状对应于由设置在所述成形装置中的所述至少一个模具提供的形式，并且具有大于5.0g / cm 3的表观密度，并且其中 一定量的还原铁或海绵铁（2）通过在一定量的还原铁或海绵铁暴露于压缩力之前或期间提供的覆盖实施材料（4）被完全封装，或者通过 在一定量的还原铁或海绵铁（2）被压制成型以体现铁化合物（5）的形式之后立即提供覆盖实施材料（4）。 在上述过程中，本发明的胶囊包封的压制还原铁化合物（5）CAPRI中可包含限定比例的某些添加剂和/或CDRI细粒和/或无污染金属屑和/或二次冶金添加剂。