Spiral Chute Radial Cross-Section for Mineral Separation
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Solution Overview
Problem
Traditional spiral chutes for mineral separation face limitations due to the formation of a 'high sand dune wall' which restricts the looseness of mineral grains, leading to poor separation efficiency and limited throughput, and require mechanical force to improve separation, increasing energy consumption.
Innovation Solution
A spiral chute with a complex radial cross-section curve that gradually raises from the inside to the outside, featuring a first and second curve segment connected at a specific point, with a gentler angle at the head end of the second segment to reduce resistance and a steeper angle at the tail end of the first segment to maintain heavy mineral grains, combined with arc-shaped blocking dams and grooves to enhance separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional spiral chute is used, then the structure is simple, but the 'high sand dune wall' forms and mineral grain looseness deteriorates
Solution Approach 1:
The radial cross-section curve is segmented into multiple sections with different slope characteristics. The first section has a steeper slope to maintain heavy minerals, while the second section has a gentler slope to reduce resistance and improve grain looseness. This segmentation allows different zones to perform different functions simultaneously.
Solution Approach 2:
Different sections of the chute body are given different local geometric properties. The first curve segment has a steeper angle to prevent heavy mineral migration, while the second curve segment has a gentler angle to reduce resistance and improve looseness. This local differentiation resolves the contradiction between structural simplicity and grain looseness.
2Stability of the object's composition
If mechanical force is applied to increase centrifugal force, then the 'high sand dune wall' is thrown out and looseness improves, but heavy minerals offset outward and re-separation times increase
Solution Approach 1:
Instead of applying mechanical force to throw the high sand dune wall outward, the invention inverts the approach by using geometric curve design to naturally guide mineral separation. The complex radial cross-section curve with varying slopes allows heavy minerals to be retained in the first section while light minerals move outward in the second section, achieving separation without additional mechanical force.
Solution Approach 2:
The invention changes the geometric parameters of the chute body by implementing a complex radial cross-section curve with varying slope angles. The first section has a steeper slope angle to maintain heavy minerals, while the second section has a gentler slope angle to reduce resistance. This parameter variation enables natural separation based on mineral density without requiring additional mechanical force, thereby avoiding increased re-separation times.
3Manufacturing precision
If the chute body slope is increased to improve separation, then heavy minerals are better retained, but resistance to pulp movement increases and throughput decreases
Solution Approach 1:
The chute body is segmented into two curve sections with different slope characteristics. The first section has a steeper slope for precise heavy mineral retention, while the second section has a gentler slope to reduce resistance and maintain high throughput. This segmentation allows the system to achieve both separation precision and productivity simultaneously.
Solution Approach 2:
Different local slope angles are assigned to different sections of the chute body. The first curve segment has a steeper local slope to improve separation precision for heavy minerals, while the second curve segment has a gentler local slope to reduce resistance and maintain high pulp flow velocity, thereby preserving hourly throughput.
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 design enhances the looseness of mineral grains, increases throughput, and improves separation efficiency by effectively separating heavy and light minerals, reducing energy consumption and re-separation times.
Implementation Method 1
a spiral chute for mineral separation, comprising a spiral chute body which is supported to be upright, wherein: a radial cross section curve of the chute body gradually raises from an inside to an outside of the chute body; the radial cross section curve of the chute body is a complex curve
Implementation Method 2
The spiral chute for mineral separation is a mineral separator which physically separates minerals under an action of centrifugal force and compound gravity field based on different density and specific gravity of mineral grains
Implementation Method 3
physically separates minerals under an action of centrifugal force and compound gravity field based on different density and specific gravity of mineral grains
Data Source
AI summary
A spiral chute for mineral processing, comprising a spiral chute body (10) supported to be vertical. A radial cross-sectional profile curve of the chute body gradually rises from the inside of the chute body to the outside of the chute body. The radial cross-sectional profile curve of the chute body is a compound curve (100). The compound curve comprises a first curve segment (110) and a second curve segment (120) sequentially arranged from the inside of the chute body to the outside of the chute body. The tail end of the first curve segment and the head end of the second curve segment are connected to a first connection point (130). The included angle between the curve tangent of the head end of the second curve segment and the horizontal plane is smaller than that between the curve tangent of the tail end of the first curve segment and the horizontal plane. The spiral chute for mineral processing can not only outwardly expand and thin a high dune wall to improve the looseness of mineral particles, but also increase the handling capacity per hour, so that the mineral processing efficiency and effect are better.