Fuse reducing iron-smelting process for rotating furnace
A technology of rotary hearth furnace and process, which is applied in the field of smelting reduction ironmaking process and related equipment, and can solve problems such as difficulty in popularization
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0018] 78 parts (by weight, the same below) of fine iron powder (containing 65% iron), 19 parts of coal dust (13% of ash, 0.65% of sulfur), and 3 parts of binder were mixed and pelletized.
[0019] Dry the resulting balls and put them into a rotary hearth furnace for reduction. The reduction temperature is 1350°C, the treatment time is 15, 20, and 30 minutes, and the achieved metallization rates are 80%, 85%, and 88%, respectively.
[0020] The metallized pellets from the rotary hearth furnace are put into the melting gas-making furnace, and the briquettes are used as fuel to obtain molten iron with Fe 95.6%, C 3.8%, S 0.03%, P 0.07%, and Si 0.5%.
Embodiment 2
[0022] Mix 81 parts (weight, the same below) of fine iron powder (containing 68% iron), 17 parts of coal powder (12% of ash, 0.5% of sulfur), and 2 parts of binder, and make pellets after mixing. The dried balls were added to a rotary hearth furnace for reduction, the reduction temperature was 1300°C, the treatment time was 10, 15, 20, and 30 minutes respectively, and the metallization rates of the obtained metallized pellets were 78%, 81%, and 85% respectively. , 87%.
[0023] The metallized pellets from the rotary hearth furnace are put into the melting gas-making furnace, and the briquettes are used as fuel to obtain the molten iron composition: Fe 95.51%, C 4%, S 0.025%, P 0.065%, Si 0.4%.
[0024] In terms of environmental protection, the present invention has no solid waste discharge in the process, and the dust discharge is less than 100mg / m 3 , can be reduced to 50mg / m after passing through the dust collector 3 (The national standard is 100mg / m 3 ). Since there is ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
