Presentation on theme: "Investigation & optimization of Greenside coal transfer points in order reduce maintenance requirements Ayanda Nhlapho 2 nd Year University of Cape Town."— Presentation transcript:
Investigation & optimization of Greenside coal transfer points in order reduce maintenance requirements Ayanda Nhlapho 2 nd Year University of Cape Town
Table of Contents Project Background Problem Statement Objectives Methodology Plant Information Materials Used on Chutes
Table of Contents Wear Liners on Chutes - Wear Liner Selection - Wear Liner Solutions Liner Results Liner Solutions - Dead Box liners
Table of Contens Functions of an Effective Chute Chutes Conclusion Recommendations QUESTIONS
Project Background 4-Seam & 5-Seam Plant Chutes in the Plant Liners on Chutes
Investigation of Transfer Points.
Objectives Find a way to improve Transfer Points in order to reduce maintenance requirements. Minimize costs. Increase safety. Decrease labour hours & downtime.
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
Plant 5-Seam 4-Seam
Size Separation (Debmar screen)
Separation of coal & waste (Spiral)
Separation of coal & waste (Cyclone) Overflow (Product) Underflow (Discard) Vortex Finder Tangential Inlet
Separation of coal and waste (Drum)
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.
Materials used on chutes Mild steel (Chutes) -Low maintenance -Price is relatively low -It is neither brittle or Ductile -Corrosion resistance Stainless Steel  (Liner material) - Abrasion resistance - Antibacterial - Passivation - High strength - Corrosion resistance
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
Functions of an effective chute To feed the receiving conveyor in its direction of travel To centralize the material load
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
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.
Functions of an effective chute Traditional chutes
Hood & Spoon
Hood & spoon
Hood & Spoon Dust reduction
Conclusion Change all liners to polyurethane Apply Hood & Spoon
Recommendations Seaton Products Martin Engineering
Acknowledgements Staff in the training centre Staff working at the plant Underground staff