Dual Charging Chute System for Uniform Sintered Ore Heat Distribution
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Solution Overview
Problem
The existing sintered ore manufacturing process results in insufficient heat at the upper portion and excessive heat at the lower portion of the raw material layer, leading to sintered ore with inadequate strength and collection rate.
Innovation Solution
A raw material charging apparatus and method that involves a first and second charging chute system, where the mixed-raw material and solid fuel are uniformly mixed and loaded onto the upper portion of the raw material layer by regulating the charging conditions, including varying the inclination angle and spacing of rollers, and classifying fuels based on combustion rates to ensure even heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the conventional single charging chute system is used, then the charging process is simple, but the heat distribution becomes uneven (insufficient heat at upper portion, excessive heat at lower portion)
Solution Approach 1:
The charging system is divided into multiple charging chutes (first charging chute and second charging chute) positioned at different locations. Each chute charges a specific region of the raw material layer, enabling differentiated heat distribution control across different zones to resolve the uneven temperature problem.
Solution Approach 2:
Different regions of the raw material layer are charged with different characteristics through multiple charging chutes. The first charging chute charges one region while the second charging chute charges another region, allowing each zone to receive appropriate heat treatment according to its specific requirements, thus achieving uniform overall heat distribution.
2Strength
If the solid fuel is not uniformly mixed on the upper portion, then the charging operation is simple, but the sintered ore strength and collection rate deteriorate
Solution Approach 1:
Solid fuel is pre-mixed with the raw material on the upper portion of the raw material layer before sintering begins. This preliminary mixing ensures that the solid fuel is uniformly distributed in the upper region, which then combusts during sintering to provide the necessary heat for achieving strong sintered ore with high collection rate.
Solution Approach 2:
The upper portion of the raw material layer serves as an intermediary mixing zone where solid fuel and raw material are combined before the main sintering process. This intermediate mixing step ensures uniform fuel distribution without complicating the overall charging operation, as the mixing occurs naturally during the charging process.
3Manufacturing precision
If the heat is concentrated at the lower portion, then the combustion process is intense, but the sintered ore quality becomes non-uniform
Solution Approach 1:
The combustion energy is distributed differently across various regions of the raw material layer. By using multiple charging chutes to place solid fuel in specific zones, each region receives appropriate combustion energy according to its requirements, preventing excessive heat concentration at the lower portion while ensuring sufficient heat at the upper portion, thus achieving uniform sintered ore quality.
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
This approach improves the collection rate and strength of sintered ore at the upper layer by ensuring uniform mixing and heat distribution, reducing quality deviations and heat imbalances, thereby enhancing the sintering process.
Implementation Method 1
a first charging chute disposed below the first hopper and extending obliquely... a second charging chute disposed below the second hopper and the first charging chute and extending obliquely
Implementation Method 2
combusting the solid fuel, and sintering the iron ore with the combustion heat... the combustion heat of the cokes transferred to the lower portion of the mixed-raw material
Implementation Method 3
the completely sintered ore is discharged to the ore discharging unit... the sintering vehicle is passed through a lower side of an ignition-furnace to firing an upper portion of the mixed-raw material
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
The present disclosure provides a raw material charging apparatus including a first hopper disposed above a storage vehicle traveling along a path; a first charging chute disposed below the first hopper and extending obliquely, wherein the first charging chute has a through-hole defined therethrough in a direction intersecting the extending direction of the first chute; a second hopper disposed above the storage vehicle and spaced apart from the first hopper; and a second charging chute disposed below the second hopper and the first charging chute and extending obliquely. Further, the present disclosure provides a raw material charging method using the apparatus. In this way, the apparatus and method may improve the collection rate and strength of the sintered ore in the upper portion of the raw material layer.