Mill Liner Assembly Non-Sticking Intermediary Layer
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Solution Overview
Problem
The existing mill liner assemblies face difficulties in separating worn lifter bars from shell plates without damaging the elastomeric sheet, due to adhesion caused by compression set, leading to increased replacement costs and operational challenges.
Innovation Solution
Incorporating layers with substantially non-resilient materials and a non-sticking surface on the cooperating and mounting portions of the shell plates and lifter bars to prevent adhesion, allowing for easy separation and reuse of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lifter bars and shell plates are securely bonded together over time for wear protection, then reliability of the mill liner assembly is improved, but ease of repair deteriorates as removal of lifter bars becomes very difficult
Solution Approach 1:
A non-sticking layer is introduced as an intermediary between the lifter bar and shell plate. This layer prevents direct bonding while allowing the components to remain securely positioned during operation. The non-sticking layer acts as a mediator that eliminates adhesion problems without compromising the functional relationship between lifter bars and shell plates, enabling easy removal when repair is needed.
2Adaptability or versatility
If elastomeric materials are used in the mill liner assembly, then adaptability and cushioning are improved, but adhesion between components increases due to compression set
Solution Approach 1:
The non-sticking layer serves as a mediator between elastomeric components, preventing compression set-induced adhesion while allowing the elastomeric materials to maintain their cushioning and adaptability functions. This intermediary layer eliminates the harmful adhesion effect without removing the beneficial mechanical properties of the elastomeric materials.
Solution Approach 2:
The invention changes the surface property parameter of the contacting surfaces by introducing a non-sticking layer. This parameter change affects only the adhesion characteristic while preserving other important parameters such as cushioning, elasticity, and mechanical strength of the elastomeric materials.
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 non-sticking layers facilitate the easy removal and replacement of worn lifter bars, extending the life of shell plates and reducing maintenance costs by preventing adhesion, thus improving the efficiency and cost-effectiveness of mill liner maintenance.
Implementation Method 1
where the fused elements include one or more elastomeric materials, the elements tend to adhere together over time due to compression set
Data Source
AI summary
A mill liner assembly for mounting on an inner diameter of a shell of a grinding mill. The mill liner assembly includes one or more shell plates for engagement with the shell, each of the shell plates having a cooperating portion thereof, and one or more lifter bars, each of the lifter bars having a mounting portion thereof, the mounting portion being receivable on the cooperating portion. The mill liner assembly also includes one or more layers having one or more substantially non-resilient materials and a substantially non-sticking surface. The layer is at least partially positioned on at least a first selected one of the cooperating portion and the mounting portion, to position the non-sticking surface thereof for engagement with a second selected one of the cooperating portion and the mounting portion, to impede adhesion of the shell plate and the lifter bar to each other.