Blast Furnace Feed Control via Infrared Sinter Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current blast furnace operations face instability due to variations in component concentrations of sintered ore, leading to inconsistent slag viscosity and increased coke consumption, as existing technologies do not effectively control the component concentrations of blast furnace feed materials in real-time.
Innovation Solution
Implementing a method that measures the component concentrations of sintered ore using an infrared analyzer and adjusts the consumption of blast furnace feed materials, including sintered ore, pellets, and auxiliary materials, to maintain target component concentrations, thereby stabilizing blast furnace operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If component concentrations of sintered ore are not monitored and adjusted, then operational simplicity is maintained, but blast furnace operation stability deteriorates due to variations in feed material composition
Solution Approach 1:
The patent implements a feedback control system where component concentrations of sintered ore are continuously monitored, and based on the measured values, the consumption amounts of sintered ore and auxiliary materials are automatically adjusted to maintain target concentrations in blast furnace feed materials, ensuring stable operation
Solution Approach 2:
The patent replaces manual sampling and laboratory analysis methods with an infrared analyzer that directly measures component concentrations in sintered ore on the production line, enabling real-time monitoring without mechanical intervention in the measurement process
2Stability of the object's composition
If component concentrations of blast furnace feed materials are not controlled, then process simplicity is maintained, but slag viscosity becomes inconsistent leading to operational problems
Solution Approach 1:
The system continuously monitors component concentrations and adjusts consumption amounts based on feedback from measurements, ensuring consistent slag viscosity by maintaining target component concentrations in feed materials
Solution Approach 2:
The patent adjusts the consumption amounts of sintered ore and auxiliary materials as variable parameters to compensate for fluctuations in sintered ore composition, thereby maintaining constant component concentrations in the final feed material mixture
3Manufacturing precision
If real-time measurement and adjustment of sintered ore composition is implemented, then feed material consistency is improved, but measurement and control system complexity increases
Solution Approach 1:
The patent uses an infrared analyzer to replace traditional mechanical sampling and laboratory analysis methods, enabling non-contact, real-time measurement of component concentrations directly on the sintered ore production line
Solution Approach 2:
The system automatically performs measurement, calculation of required adjustments, and control of consumption amounts without manual intervention, allowing the process to self-regulate and maintain precision
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 ensures stable blast furnace operation by maintaining consistent slag viscosity and reducing coke consumption by controlling the component concentrations of blast furnace feed materials in real-time, even with changes in sintered ore composition.
Implementation Method 1
measuring component concentrations of sintered ore... using an infrared analyzer
Data Source
Figure 1
Figure 2(a)~3
Figure 4(a)~4(b)
AI summary
Provided is a blast furnace operation method that makes it possible to control the component concentrations of a blast furnace feed material to target component concentrations even if there is a change in the component concentrations of a sintering raw material. A blast furnace operation method includes charging blast furnace feed materials into a blast furnace, the blast furnace feed materials including product sintered ore, lump iron ore, and an auxiliary material. The blast furnace operation method includes: a sintering step for sintering a sintering raw material to form a sintered cake; a crushing step for crushing the sintered cake to form sintered ore; a cooling step for cooling the sintered ore; a sieving step for sieving the cooled sintered ore to separate into product sintered ore and return ore; a measuring step for measuring a component concentration of at least one of the cooled sintered ore, the product sintered ore, and the return ore; and an adjusting step for adjusting consumptions of the product sintered ore, the lump iron ore, and the auxiliary material, which are to be included in the blast furnace feed materials, wherein, in the adjusting step, the consumptions of the blast furnace feed materials are adjusted by using the component concentration measured in the measuring step.