Segmented Bowl Design for Batch Centrifugal Concentrator Maintenance
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Solution Overview
Problem
Batch Centrifugal Concentrators (BCCs) face challenges due to the large impact loads and abrasive slurry flows, which require robust and durable bowls, but these are difficult and costly to transport and maintain, especially in remote locations, and the outflow ports often clog with debris, degrading performance.
Innovation Solution
A segmented bowl design for BCCs, where each segment is arcuate and can be assembled to form a circular profile, allowing for easy replacement and cleaning of parts, with inserts to prevent clogging of outflow ports, and 3D printing for on-site manufacturing of segments and replacement parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a unitary bowl design is used to ensure structural robustness and durability under impact loads and abrasive slurry flows, then the bowl provides sufficient strength and reliability, but the bowl becomes difficult and expensive to transport to remote sites and requires heavy lifting equipment for maintenance
Solution Approach 1:
The bowl is divided into multiple segments that can be assembled together to form the complete bowl structure. Each segment is smaller and lighter than a unitary bowl, making them easier to transport to remote sites and simpler to handle during maintenance operations using available lifting equipment.
2Stability of the object's composition
If a unitary bowl design is used to ensure structural integrity, then the bowl maintains its shape and function under operational loads, but the bowl cannot be easily refurbished and often needs complete replacement
Solution Approach 1:
The segmented design allows individual segments to be removed, refurbished, or replaced independently while the rest of the bowl remains in service. This enables localized repairs without complete bowl replacement, reducing downtime and maintenance costs.
3Productivity
If multiple BCCs are operated to ensure continuous production capacity, then production can continue during unscheduled maintenance events, but heavy lifting maintenance equipment must be relocatable at the site for each BCC
Solution Approach 1:
By segmenting the bowl into smaller, lighter components, the maintenance equipment requirements are reduced. Standard equipment that can be easily relocated between multiple BCCs becomes sufficient, simplifying the logistics of maintaining multiple units for continuous production.
4Productivity
If outflow ports are provided for fluid injection to create fluidized bed regions, then the BCC achieves effective concentration performance, but the outflow ports become clogged with debris from the slurry
Solution Approach 1:
The insert modifies the local quality of the outflow port region by providing a protective structure that prevents debris clogging while maintaining the fluid injection function. The insert creates a localized solution at the port entrance without affecting the overall bowl structure or performance.
Solution Approach 2:
The insert acts as an intermediary element between the outflow port and the slurry environment. It mediates the interaction by preventing direct contact between debris and the port opening while still allowing fluid passage, thus protecting the port from clogging.
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 segmented bowl design reduces transportation and maintenance costs, allows for in-situ assembly and disassembly, and minimizes clogging issues, enhancing operational efficiency and reducing the need for heavy lifting equipment.
Implementation Method 1
Batch Centrifugal Concentrators (BCC) are a class of major equipment used mainly in minerals processing operations... BCCs operate by creating zones upon the inner sidewall of the bowl that act as localised fluidized bed regions
Data Source
AI summary
The present invention is a segmented bowl for a batch centrifugal concentrator constructed from a plurality of segments that are each placed adjacently to one another, so that each segment is in intimate contact with its neighbouring segments, so that when a sufficient number of segments are put into place, they form the bowl of the batch centrifugal concentrator.