Reduced Iron Feeding System With Vibration Trough
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Solution Overview
Problem
Conventional reduced iron material feeding systems face issues such as cracking and powdering of granular materials, uneven distribution on the furnace floor, and difficulty in controlling the flow of pellets across varying furnace widths, leading to inhibited reduction melting reactions and continuous operation challenges.
Innovation Solution
A feeding system with a zigzag arrangement of material feeding equipment along the furnace width, incorporating a hopper, trough, vibration applying unit, and a water cooling material charging portion, which allows for controlled and uniform feeding of reduced iron materials, preventing cracking and powdering, and enabling efficient use of furnace space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pellets are fed intensively onto the furnace floor via the cylinder member, then the feeding efficiency is improved, but the pellets are dragged by the furnace floor and cracked or powdered
Solution Approach 1:
The patent introduces a vibration mechanism in the trough that causes the trough to vibrate along the furnace floor moving direction. This vibration prevents pellets from being dragged and cracked by the furnace floor while maintaining efficient feeding, thereby resolving the contradiction between feeding efficiency and pellet integrity.
2Manufacturing precision
If a leveling unit is added to spread pellets uniformly, then the distribution uniformity is improved, but the device complexity increases and powder accumulation is not addressed
Solution Approach 1:
The vibration mechanism serves multiple functions: it prevents pellet cracking, ensures uniform distribution across the furnace floor, and prevents powder accumulation. By making the trough vibratable, a single component achieves what previously required multiple separate devices, reducing overall system complexity while improving distribution uniformity.
3Productivity
If the furnace floor width is expanded to realize upsizing of the furnace main body, then the production capacity is improved, but it becomes impossible to cope with large-sized vibrating conveyor
Solution Approach 1:
The patent divides the feeding system into multiple troughs arranged in the furnace width direction, with each trough serving a specific zone. This segmentation allows the system to handle large furnace widths without requiring a single oversized vibrating conveyor, thereby maintaining production capacity while avoiding the complexity of large-scale equipment.
4Area of stationary object
If multiple troughs are arranged in the furnace width direction, then the coverage area is improved, but the amount of pellets fed to outer and inner peripheral portions cannot be controlled individually
Solution Approach 1:
The patent makes the vibration characteristics of each trough adjustable, allowing independent control of vibration frequency and amplitude for each trough. This dynamic control capability enables individual adjustment of pellet feeding amounts to outer and inner peripheral portions, providing operational flexibility while maintaining comprehensive furnace floor coverage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces cracking and powdering of reduced iron materials, ensures uniform distribution across the furnace floor, and enhances productivity by allowing precise control of material supply and maintenance access, thereby improving the efficiency of metal iron production.
Implementation Method 1
a vibration applying unit configured to cause the trough to vibrate along a furnace floor moving direction
Implementation Method 2
a water cooling material charging portion
Data Source
AI summary
Not only the cracking of granular reduced iron materials is reduced, but also reduced iron materials are fed uniformly onto a furnace floor regardless of a width of the furnace floor. A feeding system for reduced iron material includes a plurality of material feeding equipments 4 provided in a furnace width direction of a mobile furnace floor type reduction melting furnace, wherein each of the material feeding equipments 4 is constructed by a hopper 10 configured to receive reduced iron materials and discharge the materials from a discharge port 10a, a trough 14 configured to connect the discharge port 10a and a material charging portion of the mobile furnace floor type reduction melting furnace configured to receive the reduced iron materials discharged from the discharge port 10a, an exit portion provided on an exit side of the trough 14, and a vibration applying unit configured to cause the trough to vibrate along a furnace floor moving direction.