High-Temperature Steel Slag Cooling and Crushing System
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Solution Overview
Problem
Current methods for processing high-temperature steel slag are inefficient, environmentally harmful, and unable to handle high-viscosity or ladle-bottom slag effectively, leading to prolonged processing times, significant dust emission, and resource underutilization.
Innovation Solution
A dual-cavity serial rolling cylinder system with a material feeding barrel and a working barrel, where high-temperature slag is fed in a one-time operation and processed through a spiral motion, using steel balls and spray cooling to rapidly cool and crush the slag, eliminating the need for external mechanical forces and reducing dust emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high-temperature steel slag is poured out onto a designated place for cooling, then the slag can be cooled down, but the processing procedure requires continuous turning over by excavator or forklift, resulting in long processing time, large floor area, execrable operating environment, and serious pollution
Solution Approach 1:
The patent replaces the mechanical turning over system (excavator or forklift) with a water spray cooling system. High-temperature steel slag is cooled by spraying water directly onto it, eliminating the need for mechanical intervention and continuous turning over operations. This substitution dramatically improves processing efficiency while reducing floor space requirements and environmental pollution.
2Productivity
If wind quenching method is used to rapidly granulate liquid steel slag, then fine and uniform slag granules are produced that can be utilized directly, but this method can only process steel slag having excellent fluidity and cannot process steel slag with higher viscosity and poor fluidity
Solution Approach 1:
The patent changes the physical state parameter of the steel slag from liquid to solid before processing. By cooling high-temperature steel slag to a solid state and then crushing it into granules, the method can process steel slag with any viscosity level, including those with poor fluidity that cannot be processed by wind quenching. This parameter change expands the adaptability of the processing method to various types of steel slag.
3Productivity
If hot stuffing method is used to pulverize steel slag at 800°C, then rapid pulverization is achieved, but steel slag with temperature higher than 800°C must first be cooled outside the hot stuffing pool, requiring repeated turning over that causes serious dust emission and thermal pollution
Solution Approach 1:
The patent replaces the mechanical turning over system with a water spray cooling system. High-temperature steel slag is cooled by spraying water directly onto it in a controlled manner, eliminating the need for repeated mechanical turning over operations. This substitution significantly reduces dust emission and thermal pollution while maintaining rapid cooling efficiency.
4Object-generated harmful factors
If rolling cylinder device is used to cool and crush high-temperature liquid slag, then dust-laden steam is collectively discharged after purification, but the device cannot process ladle-bottom slag with large lumpiness and no fluidity, requiring a separate slag turning field that reduces efficiency and causes dust emission
Solution Approach 1:
The patent changes the temperature parameter of the steel slag by cooling it to a solid state before processing. Solidified steel slag, including ladle-bottom slag with large lumpiness, can be directly fed into the crushing device without requiring a separate turning field. This parameter change enables the device to handle all types of steel slag efficiently while maintaining dust control through the enclosed design.
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 method significantly increases processing efficiency, reduces dust emission to near zero, and allows for the effective handling of high-viscosity and blocky slag, enabling rapid stabilization and utilization of steel slag resources.
Implementation Method 1
using cooling water ejected from a spray cooling system to controllably cool and immerge to the crushed steel slag so as to rapidly stabilize the steel slag and make the steel slag have a normal temperature
Implementation Method 2
achieving a heat-exchange cooling to the steel balls
Implementation Method 3
blocky high-temperature solid steel slag is continuously cooled and crushed by rolling steel balls within the working barrel
Implementation Method 4
crushed by rolling steel balls
Implementation Method 5
under the combined action of the gravity component force in the axial direction of the material feeding barrel and the rotating force of the material feeding barrel, the high-temperature solid steel slag within the material feeding barrel moves downwards gradually as the material feeding barrel rotates, in the form of spiral feeding
Implementation Method 6
the working barrel and the material feeding barrel are rotated simultaneously
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A system for disposing high temperature solid state steel slag includes a working barrel (4), a feeding barrel (9), a liftable hydraulic bracket (12), a supporting device(13) and a transmission device(14). The working barrel (4) axially connects with the feeding barrel (9) in series. The working barrel (4) is provided with cooling and crushing medium (4-1) and spray pipe inside. A method for disposing high temperature solid state steel slag by using said system enables single feeding and multiple disposing.