Download presentation
Presentation is loading. Please wait.
Published byDimitri Coxey Modified over 10 years ago
1
Investigation & optimization of Greenside coal transfer points in order reduce maintenance requirements Ayanda Nhlapho 2 nd Year University of Cape Town
2
Table of Contents Project Background Problem Statement Objectives Methodology Plant Information Materials Used on Chutes
3
Table of Contents Wear Liners on Chutes - Wear Liner Selection - Wear Liner Solutions Liner Results Liner Solutions - Dead Box liners
4
Table of Contens Functions of an Effective Chute Chutes Conclusion Recommendations QUESTIONS
5
Project Background 4-Seam & 5-Seam Plant Chutes in the Plant Liners on Chutes
6
Investigation of Transfer Points.
7
Objectives Find a way to improve Transfer Points in order to reduce maintenance requirements. Minimize costs. Increase safety. Decrease labour hours & downtime.
8
Methodology Participate in daily maintenance activities Research on chute & liners Visits to consultants Martin Engineering & Seaton products Compare costs of new systems to old systems
9
Plant 5-Seam 4-Seam
10
Crusher
11
Size Separation (Debmar screen)
12
Separation of coal & waste (Spiral)
13
Separation of coal & waste (Cyclone) Overflow (Product) Underflow (Discard) Vortex Finder Tangential Inlet
14
Separation of coal and waste (Drum)
15
Wear liner on chutes Wear liner is a material used on the interior of a chute as a sacrificial surface. It serves as an easily replaceable sacrificial wear surface to protect the walls of the chute.
16
Materials used on chutes Mild steel (Chutes) -Low maintenance -Price is relatively low -It is neither brittle or Ductile -Corrosion resistance Stainless Steel [304] (Liner material) - Abrasion resistance - Antibacterial - Passivation - High strength - Corrosion resistance
17
Materials used on chutes Ceramic Tiles (Liner material) - Corrosion resistant - Abrasion resistance - Low maintenance - Relatively inexpensive
18
Wear liner selection Friction Coefficient Resistance to material adhesion Resistance to abrasive wear Resistance to impact
19
Wear liner selection Resistance to corrosion Attachment method Initial cost Maintenance cost
20
Wear liner selection
21
Liners on chutes
22
Dead Box Liners
23
Dead Box liners
24
Liner results Greater Savings associated with using Polyurethane Installation & maintenance is very cheap 6 Times lighter Therefore very safe to work with Lasts longer than stainless steel Great reduction in noise levels Decrease in downtime
25
Liner Results
26
Functions of an effective chute To feed the receiving conveyor in its direction of travel To centralize the material load
27
Functions of an effective chute To minimize the impact on the receiving belt and material degradation - Chute angles - Material buffer Grizzly Bars installed on Chutes
28
Functions of an effective chute To supply the stream of material at a speed as close as possible to the speed of the receiving conveyor. To minimize the generation of spillage and the release dust.
29
Functions of an effective chute Traditional chutes
30
Hood & Spoon
32
Hood & spoon
33
Hood & Spoon Dust reduction
34
Conclusion Change all liners to polyurethane Apply Hood & Spoon
35
Recommendations Seaton Products Martin Engineering
36
Acknowledgements Staff in the training centre Staff working at the plant Underground staff
37
QUESTIONS? Questions ?
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.