A hydrocarbon double-reduction metal iron and steel slag carbon fixation process system based on a rotary kiln
The rotary kiln-based hydrocarbon dual reduction process for metallic iron and steel slag carbon fixation solves the problems of low resource utilization and high CO2 emissions, achieving efficient recovery of metallic iron and full resource utilization of steel slag, reducing energy consumption and pollution, and improving economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CARBON SILVER (HEBEI XIONGAN) NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing processes for preparing metallic iron suffer from waste of reducing agents, difficulty in efficiently utilizing byproduct CO2, environmental pollution and low resource utilization rates in steel slag treatment, and a lack of reliable industrialization pathways for carbon capture and hydrogen metallurgy technologies in the steel industry, resulting in low resource utilization and high CO2 emissions.
The rotary kiln-based carbon-hydrogen dual reduction process for metallic iron and steel slag carbonization utilizes equipment such as a CO fuel oxidation kiln, an electrically heated three-lobe closed reduction kiln, a gas reforming unit, a three-lobe hydrogen reduction kiln, an LNG synthesis system, an acetic acid synthesis system, and a calcium acetate reactor to achieve efficient reduction of iron concentrate and graded treatment of steel slag, co-producing multiple chemical products and capturing CO2.
It has achieved high-purity recovery of metallic iron, 100% resource utilization of steel slag, CO2 capture and carbon fixation rate of 90%, energy consumption per ton of iron reduced by 32.7%, zero waste residue and waste liquid discharge, significantly improved economic benefits, and promoted the green transformation of the steel industry.
Smart Images
Figure CN122405929A_ABST