Comprehensive utilization method of red mud coal-base rotary kiln method
A technology of rotary kiln and red mud, applied in the direction of rotary drum furnace, furnace, furnace type, etc., can solve the problem of unable to meet the production of elemental iron and cement clinker, etc., and achieve the effects of reduced extraction cost, high processing rate and simple process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0015] Mix the red mud with 8% of the weight of calcium carbonate and 20% of the weight of the red mud, and put it in the rotary kiln, and carry out the carbon reduction reaction at 1000 ° C. After 6 hours, the obtained sponge iron It can be separated from building materials that can be used to make bricks.
[0016] Wherein the weight percentage of selected red mud consists of: Fe 2 o 3 30%, Al 2 o 3 20%, SiO 2 20%, CaO 8%, Na 2 O10%, TiO 2 2%, loss on ignition 10%. The reduction rate of iron reaches 95%, and the recovery rate reaches 96%.
Embodiment 2
[0018] Mix the red mud with 10% of the weight of calcium carbonate and 30% of the weight of anthracite in the rotary kiln, and carry out the carbon reduction reaction at 1260 ° C. After 5 hours, the obtained bricks can be made It can be separated with building materials and sponge iron.
[0019] Wherein the weight percentage of selected red mud consists of: Fe 2 o 3 50%, Al 2 o 3 10%, SiO 2 10%, CaO 5%, Na 2 O5%, TiO 2 5%, loss on ignition 15%. The reduction rate of iron reaches 95%, and the recovery rate reaches 96%.
Embodiment 3
[0021] Red mud and 9% calcium oxide, 1% fluorite, and 35% bituminous coal by weight of red mud are fully mixed, placed in a rotary kiln, and carbonaceous reduction reaction is carried out at 1350°C. After 4 hours, the obtained sponge iron can be separated from the building material raw materials that can be used as cement filler.
[0022] Wherein the weight percentage of selected red mud consists of: Fe 2 o 3 50%, Al 2 o 3 10%, SiO 2 10%, CaO 5%, Na 2 O5%, TiO 2 5%, loss on ignition 15%. The reduction rate of iron reaches 96%, and the recovery rate reaches 97%.
PUM
Property | Measurement | Unit |
---|---|---|
recovery rate | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com