Stable Running for Iron Scale Reduction Roasting Metallurgical Rotary Kiln

• Customization: Available
• After-sales Service: 24h Online Support; Long-Term Spare Parts Supply
• Warranty: 12 Months From Shipment
• Model NO.: Customized
• Customized: Customized
• Certification: ISO
• Capacity: 5-500t/D
• Max Working Temp: 1450°C
• Heating Mode: Coal/Gas/Oil/Electric
• Applicable Materials: Limestone,Bauxite,Spodumene
• Transport Package: Special Large-Size Cargo Transport
• Specification: 2.5×40 meters / 3.2×50 meters
• Trademark: Dingxin
• Origin: Henan, China
• Package Size: 300.00cm * 180.00cm * 200.00cm
• Package Gross Weight: 8000.000kg

Product Description

Product Description

The production process of reconstituted iron

If the project is the mixed raw material sources, both 30% lean hematite, and purchased 60% of high grade concentrate, two process flexible switching mode: incoming all 30% low grade ore: go complete two processes - magnetization roasting - wet magnetic separation purification - metallic reduction; Material is 60% high grade concentrate directly: can stop using the front magnetization, grinding, magnetic separation section, only to enable the second period of single metallic rotary kiln production, flexible matching different raw materials. However, single-stage production lines lack the ability to pre-treat and refine, and can only process high-grade ore in a single stage, with extremely poor adaptability to raw materials.

Specification

Item	Specification
Product Name	Coal based DRI Sponge Iron Metallurgical Rotary Kiln
Kiln Diameter	Φ1.5 to Φ6.0 m
Kiln Length	17.5 to 80 m
Daily Processing Capacity	50 to 500 ton per day
Working Temperature Range	700 to 1100 degree celsius
Kiln Rotation Speed	0.5 to 1.2 revolutions per minute
Heating & Reductant Material	Anthracite coal, lignite, non coking coal
Ignition Heating Fuel	Diesel oil for initial kiln heating only
Control System	PLC automatic control for temperature pressure atmosphere
Inner Lining Material	High alumina refractory brick
Raw Material Adaptation	High grade hematite, low grade hematite, iron scale
Finished Index	Metallization rate 88 93 percent
Support Process	Single stage one step / Two stage magnetizing metallization reduction
Key Auxiliary Device	Kiln head kiln tail sealing unit, sealed indirect cooling drum

Product Overview

This coal based direct reduction metallurgical rotary kiln is core equipment for sponge iron DRI production. It realizes solid phase reduction reaction of iron ore with non coking coal as reductant. The whole production strictly controls reduction atmosphere, kiln internal pressure, calcination temperature and material residence time. Multi point sealing design at kiln head kiln tail and cooling drum prevents high temperature sponge iron from secondary re oxidation after discharging. It supports single stage one step process for high grade iron ore and two stage combined magnetizing plus metallization reduction process which can handle low grade hematite ore. We provide complete turnkey solution from raw material crushing batching to finished product separation. Custom dimension and capacity are available according to customer site condition.

FAQ

What iron ore grade is suitable for single stage one step DRI rotary kiln?

A: Single stage process is fit for raw hematite ore with iron grade above 58 percent. Low grade ore below 50 percent will cause heavy kiln ring formation, high coal consumption and poor finished quality. Two stage combined process is recommended for low grade raw ore.

What is the main reductant for this coal based sponge iron rotary kiln?

A: Non coking coal such as anthracite coal or lignite works as reductant. It generates carbon monoxide inside high temperature kiln to finish solid phase reduction reaction. Expensive coke is not required for this technology.

Certifications

Patent and Technical Expertise

Technical Expertise

Our company holds national invention patent for reduction iron production technology. The patent name is method for producing iron by using reduction rotary kiln to reduce raw ore through rust erosion electric furnace. The patent number is ZL 2009 1 0263886.8.

Relying on independent patented technology and senior technical consultant support, we can provide stable and reliable reduction iron rotary kiln and complete production line solutions for global customers.

Packaging & Shipping

After Sales Service

This street light features high brightness, energy saving, environmental protection, and easy installation. It has a waterproof rating of IP67 and has passed CE certification. It is suitable for schools, parks, roadsides, factories, squares, etc. It has a warranty period of 3 years. Moreover, we can provide various styles to meet your needs.