公开(公告)号：US20160047054A1

公开(公告)日：2016-02-18

申请号：US14826403

申请日：2015-08-14

Applicant: Worcester Polytechnic Institute

Inventor： Yan Wang ,  Qiang Wang

IPC: C25C5/02 ,  C25C7/02 ,  C25C7/00 ,  C25B11/04 ,  C25B9/06 ,  C25B1/02 ,  C25B11/02

CPC classification number: C25C5/02 ,  C25B1/02 ,  C25B9/06 ,  C25B11/02 ,  C25B11/0415 ,  C25C7/00 ,  C25C7/02

Abstract: The iron and steel industry has a history of environmental consciousness, and efforts are continually made to reduce energy consumption and CO2 emissions. However, the carbothermic process has approached limits on the further reduction of greenhouse gas emissions, and only marginal improvements can be expected. Low temperature electrolysis using a dispersion medium to efficiently distribute charge throughout a colloid mixture including iron oxide provides an environmentally friendly method for performing an electrochemical reduction of Fe2O3 to produce granular Fe. An electrical-ionic conductive colloidal electrode containing the electrochemically active species (Fe2O3 particles), the liquid electrolyte (NaOH solution), and a percolating electrical conductor (carbon network) is utilized to produce Fe. The resulting simultaneous percolation of electrons and ions effectively increases the area of the current collector, and enables the process to function at higher currents and rate of charge transfer than static electrolysis.

Abstract translation: 钢铁工业具有环保意识的历史，不断努力减少能源消耗和二氧化碳排放。 然而，碳热还原过程对进一步减少温室气体排放的限制已经达到了极限，只能预期微小的改善。 使用分散介质的低温电解以有效地分配电荷到包括氧化铁在内的胶体混合物中提供了一种环境友好的方法，用于进行Fe 2 O 3的电化学还原以产生粒状Fe。 使用包含电化学活性物质（Fe 2 O 3颗粒），液体电解质（NaOH溶液）和渗透电导体（碳网络）的电离离子导电胶体电极来生产Fe。 所产生的电子和离子的同时渗透有效地增加了集电器的面积，并且使得该工艺能够在比静电解更高的电流和电荷转移速率下起作用。