A device for improving hydrogen reduction of iron ore coal-based direct reduction rotary kiln
By installing a baffle ring, an eccentric pulverized coal spray gun, and a sleeve-type burner inside the rotary kiln, the problems of low hydrogen reduction efficiency and uneven temperature in the iron ore rotary kiln reduction process were solved, resulting in a higher reduction rate and lower fuel consumption, thus improving production efficiency and product quality.
CN224394913UActive Publication Date: 2026-06-23JIUQUAN IRON & STEEL (GRP) CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIUQUAN IRON & STEEL (GRP) CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-23
Smart Images
Figure CN224394913U_ABST
Abstract
The utility model discloses a device for improving hydrogen reduction of iron ore coal-based direct reduction rotary kiln, is provided with 3 annular material blocking rings at different positions in the rotary kiln body, and the particle coal spray gun arranged on the kiln head cover of the rotary kiln discharge end is eccentrically displaced, and the rotary kiln burner is selected as a sleeve type burner. The height of the material blocking ring is 12-15% of the inner diameter of the rotary kiln, and the bottom width is 20-30% of the inner diameter of the rotary kiln. The outer shape of the cross section of the material blocking ring is similar to a parabola. The material blocking ring is made of high-temperature refractory material and is integrally constructed with the refractory material of the kiln body. The particle coal spray gun on the kiln head cover of the rotary kiln discharge end is eccentrically displaced. The displacement direction is close to the center position of the crescent-shaped material surface. The displacement position is 10-20% of the kiln diameter of the rotary kiln.
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