Centrifugal Separator Recess Ring for Slurry Gangue Exclusion
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Solution Overview
Problem
Existing centrifugal separators for separating heavier particulate materials from lighter ones in a slurry face inefficiencies in continuous operation and gangue particle exclusion, leading to suboptimal concentrate quality.
Innovation Solution
The introduction of a centrifuge bowl with an annular recess and a concentric ring structure, featuring converging walls and fluidizing openings, along with a lead-in surface with sequential steps to enhance particle separation and exclusion of lighter gangue particles, allowing for continuous operation and improved concentrate quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If all annular recesses are fluidized by injecting fluidizing water through holes in the peripheral wall, then the collecting material within the recesses is fluidized for effective separation, but the device complexity and water consumption increase
Solution Approach 1:
The patent applies local quality by selectively fluidizing only certain recesses rather than all recesses. The peripheral wall includes holes at specific recesses to inject fluidizing water, creating localized fluidization zones where heavier particulate materials are fluidized for separation, while other recesses remain non-fluidized. This selective approach improves separation efficiency at targeted locations without the complexity and water consumption of universal fluidization.
2Productivity
If the number of recesses is reduced and a frusto-conical lead-in section is provided free from fluidized recesses, then the feed material is deposited and flows over the lead-in section, but the separation capacity is reduced
Solution Approach 1:
The patent applies segmentation by dividing the bowl into distinct functional zones: a frusto-conical lead-in section free from fluidized recesses for feed material deposition and flow, and separate annular recesses for separation and collection. This segmentation allows continuous operation as material flows over the lead-in section while heavier particles are separated in the recesses, maintaining both productivity and separation efficiency.
3Productivity
If discharge ports are provided at the base of the recesses and opened by valves periodically, then concentrate is discharged continuously, but the device complexity increases
Solution Approach 1:
The patent applies continuity of useful action by providing discharge ports at the base of the recesses that are opened by valves periodically to discharge concentrate. This periodic opening of valves enables continuous discharge operation, maintaining productivity while using a relatively simple valve mechanism rather than complex continuous discharge systems.
4Manufacturing precision
If guide bodies such as spherical balls are provided at each discharge port supported by a ring, then the concentrate discharge is controlled, but the device complexity increases
Solution Approach 1:
The patent applies self-service by providing guide bodies such as spherical balls at each discharge port supported by a ring. These balls automatically control the concentrate discharge through their own weight and positioning, providing precise discharge control without requiring complex external control mechanisms. The balls self-regulate the flow of concentrate through the discharge ports.
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 configuration enhances the separation efficiency by forcing lighter gangue particles out, increasing the concentration of denser target particles and improving the purity of the concentrate through continuous operation and effective discharge mechanisms.
Implementation Method 1
a centrifugal separator of heavier particulate materials from light particulate materials in a slurry
Implementation Method 2
all of the annular recesses are fluidized by the injection of fluidizing water through holes in the peripheral wall at the respective recesses thus acting to fluidize the collecting material within the recesses
Data Source
AI summary
A centrifuge bowl for separating heavier particles from lighter particles and water comprises a conical lead-in wall leading of the bowl to a single recess or a pair of annular recesses at axially spaced positions. Each recess is generally V-shaped with an upper side wall, a lower side wall and a base. The base contains a plurality of angularly spaced valve controlled discharge ducts each having a mouth projecting through the base into the interior of the bowl for discharging the heavier particles in a continuous operation. The lead-in surface is stepped to cause tumbling of the flowing feed materials. The recess or recesses contain a concentrator ring which projects into the recess toward the base to reduce the amount of concentrate in the recess.