公开(公告)号：US20070227307A1

公开(公告)日：2007-10-04

申请号：US11579102

申请日：2005-05-18

Applicant: Markus Tschudin

Inventor： Markus Tschudin

IPC: C22B1/00

CPC classification number: C21B3/04 ,  C21C5/005 ,  C21C5/36 ,  C21C7/0025 ,  C21C2005/5276 ,  C22B5/10 ,  C22B7/04 ,  C22B34/32 ,  Y02P10/214 ,  Y02P10/216 ,  Y02P10/23 ,  Y02W30/542

Abstract: A method for reducing the chromium content from a metallurgical slag, in which the slag is charged onto an iron bath in the liquid state and the reduction of Cr is effected by the iron bath having a C content of 2 to 4% by weight, wherein a) the Cr-containing slag having a Cr content of 2 to 20% by weight is charged onto an iron bath having a C content of below 1% by weight, whereupon b) the carbon content of the iron bath is raised to about 2 to 4% by weight by the addition of carbon carriers at the simultaneous supply of energy, c) the liquid slag having a Cr content of about 0.1% by weight is tapped after the reduction of Cr, d) a cooling agent, preferably scrap, is added to the iron melt and the C content of the melt is lowered to below 1% by weight, and e) a portion of the Cr-containing melt is tapped in the liquid state, while the remaining portion is left in the converter in the liquid state for the treatment of the subsequent melt.

Abstract translation: 一种用于将冶金渣中铬含量降低的方法，其中将渣装入液态的铁浴中并且Cr的还原是通过C含量为2至4重量％的铁浴来实现的，其中 a）将Cr含量为2〜20重量％的含Cr矿渣装入C含量低于1重量％的铁浴中，b）将铁浴的碳含量提高到约2 通过在同时供应能量时添加碳载体至4重量％，c）在还原Cr之后，将Cr含量为约0.1重量％的液体渣，d）冷却剂，优选废料， 加入到铁熔体中，并且熔体的C含量降低到低于1重量％，e）一部分含Cr熔体被液化，而其余部分留在转炉中 用于处理后续熔体的液体状态。

公开(公告)号：US07641713B2

公开(公告)日：2010-01-05

申请号：US11579102

申请日：2005-05-18

Applicant: Markus Tschudin

Inventor： Markus Tschudin

IPC: C22B7/04 ,  C21C5/28

CPC classification number: C21B3/04 ,  C21C5/005 ,  C21C5/36 ,  C21C7/0025 ,  C21C2005/5276 ,  C22B5/10 ,  C22B7/04 ,  C22B34/32 ,  Y02P10/214 ,  Y02P10/216 ,  Y02P10/23 ,  Y02W30/542

Abstract: A method for reducing the chromium content from a metallurgical slag, in which the slag is charged onto an iron bath in the liquid state and the reduction of Cr is effected by the iron bath having a C content of 2 to 4% by weight, wherein a) the Cr-containing slag having a Cr content of 2 to 20% by weight is charged onto an iron bath having a C content of below 1% by weight, whereupon b) the carbon content of the iron bath is raised to about 2 to 4% by weight by the addition of carbon carriers at the simultaneous supply of energy, c) the liquid slag having a Cr content of about 0.1% by weight is tapped after the reduction of Cr, d) a cooling agent, preferably scrap, is added to the iron melt and the C content of the melt is lowered to below 1% by weight, and e) a portion of the Cr-containing melt is tapped in the liquid state, while the remaining portion is left in the converter in the liquid state for the treatment of the subsequent melt.

Abstract translation: 一种用于将冶金渣中铬含量降低的方法，其中将渣装入液态的铁浴中并且Cr的还原是通过C含量为2至4重量％的铁浴来实现的，其中 a）将Cr含量为2〜20重量％的含Cr矿渣装入C含量低于1重量％的铁浴中，b）将铁浴的碳含量提高到约2 通过在同时供应能量时添加碳载体至4重量％，c）在还原Cr之后，将Cr含量为约0.1重量％的液体渣，d）冷却剂，优选废料， 加入到铁熔体中，并且熔体的C含量降低到低于1重量％，e）一部分含Cr熔体被液化，而其余部分留在转炉中 用于处理后续熔体的液体状态。