Methods for mitigating the buildup of direct reduced iron clusters on the walls of a direct reduction furnace
US10370732B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2017 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Aug 9, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/134
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for mitigating the buildup of direct reduced iron (DRI) clusters on the walls of a direct reduction (DR) furnace, including: injecting one or more of lime, dolomite, and another anti-sticking agent into a charge disposed within a reduction zone of the DR furnace by: (1) injecting the one or more of lime, dolomite, and another anti-sticking agent into a bustle gas stream upstream of or in a bustle of the DR furnace; (2) injecting the one or more of lime, dolomite, and another anti-sticking agent into the bustle gas stream through a pipe collocated with a bustle gas port through which the bustle gas stream is introduced into the DR furnace; and (3) injecting the one or more of lime, dolomite, and another anti-sticking agent directly into the reduction zone of the DR furnace separate from the bustle gas stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.