Agriculture and Nature Conservation Secondary Agriculture

Milling Tandem Operation For Sugar Processing Training

SAQA US 114306 | NQF 2 | Credits 16 | Duration 13 Days
From $2,349 per delegate

Description

This course equips learners with the knowledge and skills required to operate a milling tandem in a sugar processing plant. It covers the principles of cane preparation, milling theory, and the operation of milling units to ensure optimal extraction of juice. Learners will also understand the importance of safety, quality control, and maintenance in the milling process.

Learning Outcomes

  • Apply the principles of cane preparation and milling theory to optimize juice extraction.
  • Demonstrate the correct startup, operation, and shutdown procedures for a milling tandem.
  • Analyze milling performance data to identify and rectify operational inefficiencies.
  • Implement safety protocols and hazard control measures in the milling area.
  • Evaluate the impact of mill settings and maintenance on extraction efficiency.
  • Design a basic troubleshooting plan for common milling tandem issues.

Target Audience

This course is designed for process operators, mill attendants, and technicians working in sugar milling operations, as well as supervisors seeking to deepen their understanding of tandem milling.

Prerequisites

None — open enrollment.

Course Outline

Day 1: Introduction to Sugar Processing and Milling Tandem

Objectives:
• Understand the overall sugar manufacturing process
• Identify the role and components of a milling tandem
• Recognize safety protocols in a milling environment
• Describe basic terminology used in milling operations

Topics:
• Overview of sugar processing from cane to raw sugar
• Introduction to milling tandem: definition and purpose
• Key components: crusher, mills, intermediate carriers, drives
• Safety hazards and personal protective equipment (PPE)
• Basic milling terminology: extraction, imbibition, bagasse

Day 2: Cane Preparation and Feeding Systems

Objectives:
• Explain cane preparation methods (knives, shredders)
• Describe the feeding system and its importance
• Identify factors affecting cane preparation quality
• Understand the impact of preparation on extraction efficiency

Topics:
• Cane unloading and conveying systems
• Cane knives: types and settings
• Shredders: operation and maintenance
• Feeding to the first mill: chutes, rollers
• Preparation index and its measurement
• Troubleshooting common preparation issues

Day 3: Mill Configuration and Roller Settings

Objectives:
• Describe mill configurations (3-roller, 4-roller, etc.)
• Explain roller arrangement and settings
• Understand the importance of roller grooves and drainage
• Identify factors influencing mill performance

Topics:
• Mill types: conventional, high-extraction, etc.
• Roller dimensions and materials
• Setting parameters: feed opening, discharge opening
• Roller grooving patterns and wear
• Hydraulic loading systems
• Impact of roller speed and ratio

Day 4: Imbibition and Juice Extraction Principles

Objectives:
• Define imbibition and its purpose
• Explain different imbibition methods (hot water, cold water, compound)
• Calculate extraction percentage and moisture content
• Understand the effect of imbibition on sugar recovery

Topics:
• Imbibition theory: diffusion and washing
• Imbibition water quality and temperature
• Compound imbibition system
• Juice extraction calculation: first mill extraction, overall extraction
• Bagasse moisture and its control
• Optimization of imbibition rate

Day 5: Mill Drives and Power Management

Objectives:
• Identify types of mill drives (steam, electric, hydraulic)
• Explain power transmission and torque requirements
• Understand energy efficiency in milling
• Describe drive maintenance practices

Topics:
• Steam engines vs. electric motors vs. hydraulic drives
• Gearboxes, couplings, and clutches
• Power consumption monitoring
• Variable speed drives and control
• Lubrication systems
• Troubleshooting drive issues

Day 6: Intermediate Carriers and Bagasse Handling

Objectives:
• Describe the role of intermediate carriers
• Explain bagasse conveying systems
• Understand bagasse moisture and its uses
• Identify safety issues in bagasse handling

Topics:
• Carrier types: slat, chain, belt
• Carrier alignment and tensioning
• Bagasse return systems
• Bagasse as fuel for boilers
• Bagasse storage and disposal
• Fire hazards and prevention

Day 7: Milling Station Control and Automation

Objectives:
• Understand control parameters for milling tandem
• Explain automation systems (PLC, SCADA)
• Monitor key process variables
• Respond to alarms and deviations

Topics:
• Control loops: feed rate, roller speed, imbibition flow
• Sensors and instrumentation
• SCADA interface and data logging
• Alarm management and emergency stops
• Standard operating procedures (SOPs) for control
• Shift handover practices

Day 8: Maintenance Strategies for Milling Equipment

Objectives:
• Describe preventive and predictive maintenance
• Identify wear parts and replacement schedules
• Understand lubrication and hydraulic maintenance
• Plan maintenance shutdowns effectively

Topics:
• Maintenance types: reactive, preventive, predictive
• Wear parts: rollers, bearings, scraper plates
• Lubrication schedules and grease types
• Hydraulic system maintenance
• Condition monitoring: vibration, temperature
• Shutdown planning and safety

Day 9: Troubleshooting Common Milling Problems

Objectives:
• Diagnose common milling issues (choking, slipping, low extraction)
• Apply root cause analysis techniques
• Implement corrective actions
• Evaluate effectiveness of solutions

Topics:
• Choking causes: preparation, feeding, settings
• Roller slipping: causes and remedies
• Low extraction: analysis and adjustments
• Mechanical failures: breakages, jamming
• Root cause analysis (RCA) tools
• Case studies from industry

Day 10: Quality Control and Sampling in Milling

Objectives:
• Understand sampling methods for cane, juice, and bagasse
• Perform routine quality tests (pol, brix, moisture)
• Interpret analytical results
• Apply quality data to optimize milling

Topics:
• Sampling techniques: primary juice, mixed juice, bagasse
• Laboratory analysis: polarimetry, refractometry
• Moisture determination methods
• Data recording and reporting
• Using quality data for process adjustments
• Quality assurance standards

Day 11: Environmental and Safety Compliance

Objectives:
• Identify environmental regulations related to milling
• Implement waste management practices
• Understand safety legislation (OHSA)
• Conduct risk assessments

Topics:
• Environmental permits and compliance
• Effluent treatment and disposal
• Dust and noise control
• Personal safety: lockout/tagout, confined spaces
• Risk assessment methodology
• Incident reporting and investigation

Day 12: Advanced Milling Techniques and Innovations

Objectives:
• Explore advanced extraction technologies (e.g., diffusers)
• Understand trends in energy efficiency
• Evaluate new materials and designs
• Discuss future directions in milling

Topics:
• Comparison of milling vs. diffusion
• High-pressure mills and dewatering
• Energy-saving innovations: variable speed, heat recovery
• Advanced roller materials and coatings
• Automation trends: AI and machine learning
• Industry best practices and benchmarking

Day 13: Integration, Review, and Assessment

Objectives:
• Integrate all knowledge into a cohesive operation plan
• Review key concepts from the course
• Complete final assessment
• Develop continuous improvement strategies

Topics:
• Comprehensive milling tandem simulation
• Review of critical parameters and troubleshooting
• Written and practical assessment
• Feedback and course evaluation
• Action planning for workplace application
• Certificate of competence

Practicals

40 hours of practicals To be conducted online or on-campus or in-house
Overview

Practical sessions provide hands-on experience in operating, monitoring, and troubleshooting the milling tandem. Learners will work with scaled-down equipment or simulators to apply theoretical knowledge, perform adjustments, and analyze process data under supervision.

Practical Activities
  • Milling Tandem Walkthrough and Safety Induction — Learners conduct a safety induction and walkthrough of a milling tandem (or simulator), identifying components and safety features. (4h)
  • Mill Roller Setting and Adjustment — Using a training mill or simulator, learners measure and adjust roller openings and hydraulic pressure to achieve target settings. (8h)
  • Imbibition System Operation and Optimization — Learners operate the imbibition system, adjusting water flow rates and temperatures while monitoring juice extraction and bagasse moisture. (8h)
  • Troubleshooting and Emergency Response Simulation — Learners respond to simulated milling emergencies (choking, roller slip, drive failure) using a training simulator, applying corrective actions. (12h)
  • Quality Sampling and Analysis — Learners collect cane, juice, and bagasse samples from the milling line (or simulated samples) and perform routine quality tests. (8h)

Summatives

Each delegate is assessed continuously throughout the course via daily exercises, scored practical assignments, and a final summative test at the end.

Practical Assignments — 30%

Practical assignments are observed and scored against a rubric during the practical sessions. Each delegate's practical mark is averaged into a single 100% score and contributes 30% to the final total.

Daily Exercises — 20%

Every training day ends with a multiple-choice exercise scored out of 100%. The scores from each daily exercise are averaged across the duration of the course to produce a Daily Average mark, which contributes 20% to the final total.

Final Test — 50%

On the last day a final summative test is written. It is a multiple-choice paper with multiple-answer questions: each question may have more than one correct option, and a single wrong selection on a question marks the entire question wrong — no partial credit. The final test is scored out of 100% and contributes 50% to the overall mark.

Final Total
Component Out of Weight
Practical Assignments (rubric-scored) 100% 30%
Daily Average (multiple choice) 100% 20%
Final Test (multi-answer multiple choice) 100% 50%
Final Total 100%

All marks are recorded on the AATICD LMS and visible to each learner under their account.

Certificate

Certificate of Completion

Awarded to delegates who achieve an overall mark of 50% or higher on the Final Total (Practicals 30% + Daily Average 20% + Final Test 50%).

How it works
  • Certificates are auto-generated on the AATICD LMS as soon as the marks pass the 50% threshold.
  • Each certificate is a branded PDF with the delegate's name, the course title, the unit standard ID, NQF level, credits, and the date of issue.
  • You can download or print your certificate from your LMS dashboard at any time after issue — there's no reissue fee and no expiry date.
  • If you scored under 50% you can sit the final test again at the next scheduled session at no extra cost.
Where to find it

Sign in to the LMS, open your dashboard, and your certificates appear under My Certificates. Each entry has a View / Download button and a print option.

Training Discounts

Group discounts apply automatically — the more delegates you enrol, the greater the saving. Discounts are calculated at 3% per 5 delegates, scaling up to 40% off for 100+ delegates.

Delegates Discount
5 3% off
10 6% off
15 9% off
20 12% off
25 15% off
30 18% off
50 30% off
75 35% off
100 40% off

3% discount per 5 delegates, up to 40% off for 100+ delegates. Contact us for a custom group quote.

Upcoming Training Sessions
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Training Discounts
Delegates Discount
5 3% off
10 6% off
15 9% off
20 12% off
25 15% off
30 18% off
50 30% off
75 35% off
100 40% off

3% off per 5 delegates, up to 40% for 100+

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