Bastnäsite Flotation & REE Concentrate Production

Operator-Level Training for Stable Recovery, Grade Control, and Safe REE Concentrate Production

Created byGeo Skills AI

Last updated 3/2026

English

What you'll learn

Explain the end-to-end bastnäsite beneficiation workflow from ROM handling through flotation to producing a saleable REE concentrate, including where flotation
Operate and control rougher–cleaner–scavenger flotation circuits to meet daily REO grade and recovery targets by managing air rate, froth depth/level, density,
Select, handle, and troubleshoot key reagent systems (collectors, depressants, frothers) by verifying dosing delivery, conditioning conditions, addition points,
Diagnose and correct performance upsets (low recovery, low grade/high gangue) using sampling discipline, basic mass balance thinking, and structured playbooks,

Course content

5 sections • 17 lectures • 57m total length

Bastnäsite and the REE Concentrate Goal4:04
Description: Defines bastnäsite as the value mineral and clarifies the concentrator’s purpose: produce a consistent REE concentrate that meets REO grade and recovery targets for downstream metallurgy. Introduces the KPI triangle (grade, recovery, mass pull) and where flotation fits in the value chain.
After completing this module, learners will be able to:
Explain the ore → concentrate → metallurgy workflow and flotation’s role in it
Define REO grade, recovery, and mass pull in operational terms
Describe how operator actions influence plant KPIs and tailings losses
Flotation Basics (Operator View)1:47
Description: Builds operator-level flotation fundamentals: bubble–particle attachment, surface behavior (hydrophobic/hydrophilic), kinetics (fast vs slow floating), and how these concepts show up in real plant behavior.
After completing this module, learners will be able to:
Describe how flotation recovers REE minerals step-by-step
Identify factors that strengthen or weaken mineral hydrophobicity
Explain why some material floats quickly and some reports late to scavengers
Circuit Anatomy (Rougher–Cleaner–Scavenger)2:32
Description: Explains the structure of a rougher–cleaner–scavenger circuit and the purpose of each stage: roughers protect recovery, cleaners protect grade, scavengers reduce tails losses. Covers recycle streams (middlings) and circulating load.
After completing this module, learners will be able to:
State the operating objective of roughers, cleaners, and scavengers
Explain what middlings are and why circulating load can destabilize the circuit
Identify which stage to focus on when recovery, grade, or stability declines
Daily KPIs, Safeguards, and Plant Hazard Zones4:03
Description: Establishes daily KPI control (REO grade, recovery, tails losses, reagent cost drivers), introduces “never bypass” safeguards and critical interlocks, and maps plant hazard zones, safe access routes, egress, and muster points.
After completing this module, learners will be able to:
Read daily KPI trends and recognize early signs of loss or instability
Identify critical safeguards/interlocks that must not be bypassed
Apply safe access discipline and locate key hazard zones and muster points

ROM Handling and Feed Blending3:19
Description: Shows how stockpiles and blending control variability in hardness, fines, moisture, and mineralogy to stabilize grinding and flotation. Covers quick feed checks and blending routines.
After completing this module, learners will be able to:
Explain how feed variability creates flotation instability
Perform basic ROM “red flag” checks (PSD, solids/moisture indicators)
Apply a blending checklist to reduce shifts in grind and reagent demand
Crushing Circuit Operations + Crusher Safety3:48
Description: Covers crusher flowsheet basics, choke feeding, oversize control, bottleneck recognition, tramp metal response, and wear/failure indicators. Links crusher product size to grinding and flotation outcomes, with core safety controls (guarding, LOTO, safe clearing).
After completing this module, learners will be able to:
Identify the main crusher circuit components and material flow
Recognize choke feed/bottleneck symptoms and oversize risks
Apply safe crusher practices for clearing and isolation (LOTO/guarding discipline)
Grinding for Liberation + Mill Safety4:14
Description: Explains grinding as liberation control using P80/PSD targets, and connects undergrind/overgrind to flotation symptoms. Covers mill control levers (feed, water, power draw), sampling basics, and mill hazards (liners/charge, dust/noise).
After completing this module, learners will be able to:
Use P80/PSD concepts to explain “right grind” vs overgrind/undergrind
Link grind shifts to recovery loss or grade dilution in flotation
Perform practical grind verification checks and follow mill-area safety controls
Classification Control (Cyclones/Screens)2:39
Description: Teaches classification as the PSD gatekeeper controlling flotation feed stability. Covers cut size, circulating load, and cyclone failure modes (roping, bypass, worn apex/vortex) and their downstream symptoms.
After completing this module, learners will be able to:
Explain cut size and circulating load and why they matter
Recognize roping/bypass/wear indicators from cyclone behavior
Diagnose flotation issues that originate from classification drift

Collectors and Depressants for Bastnäsite3:40
Description: Explains collector and depressant roles in selectivity, including fatty acids vs hydroxamates and gangue control. Covers dosage/conditioning time and a structured troubleshooting routine to separate chemistry issues from delivery and feed issues.
After completing this module, learners will be able to:
Compare collector types at a practical level and explain selectivity intent
Identify underdose vs overdose signs from froth/KPI behavior
Troubleshoot reagent problems using a disciplined checklist (delivery → conditioning → addition points → upstream drivers → data)
pH, Water Chemistry, and Froth Control3:36
Description: Links pH and water chemistry (Ca/Mg hardness, ions, recycle buildup) to selectivity, reagent demand, and froth behavior. Teaches frother function, froth reading, and quick response to overfrothing or flat froth.
After completing this module, learners will be able to:
Explain how pH drift changes flotation selectivity and stability
Identify water-quality-driven symptoms (hardness/ions/recycle effects)
Diagnose froth appearance and apply controlled quick fixes
Reagent Handling, Dosing, and Chemical Safety3:11
Description: Covers safe storage/segregation, labeling, inventory discipline, correct mixing/make-up, dosing calibration checks, PPE/SDS/GHS basics, safe troubleshooting, and spill/emergency response.
After completing this module, learners will be able to:
Set up safe reagent storage and handling routines (segregation, labeling, bunding)
Verify dosing accuracy through calibration and delivery checks
Respond correctly to dosing failures and chemical spills using safe procedures

Dewatering, Sampling, and Metallurgical Control3:21
Description: Explains thickening/filtration and moisture control, recycle water feedback into flotation, correct sampling points and common errors, and mass balance basics for daily metallurgical control.
After completing this module, learners will be able to:
Explain dewatering objectives and recognize thickener/filter instability signs
Identify how recycle water quality drives flotation performance
Apply correct sampling discipline and interpret a simple daily metallurgical dashboard
Troubleshooting Low Recovery3:22
Description: Provides a stepwise recovery restoration process: loss mapping, upstream grind/classification checks, reagent delivery verification, then air/froth/level stabilization, with escalation rules.
After completing this module, learners will be able to:
Identify where REE losses are occurring (rougher/scavenger/final tails)
Execute a structured low-recovery playbook in the correct order
Stabilize recovery without creating secondary grade or safety issues
Troubleshooting Low Grade / High Gangue3:36
Description: Teaches low-grade diagnosis by separating entrainment from true gangue flotation, then applying cleaner control actions, depressant strategy, and fines/slimes management. Includes a grade–recovery symptom matrix and shift-handover checklist.
After completing this module, learners will be able to:
Diagnose whether low grade is driven by entrainment or selectivity failure
Apply cleaner-stage actions to restore grade while protecting recovery
Hand over troubleshooting context clearly so corrective actions continue across shifts

Core Safety and Hazard Awareness2:58
Description: Establishes life-saving rules, stop-work authority, fit-for-work expectations, PPE by area, hazard reporting, and housekeeping as operational discipline.
After completing this module, learners will be able to:
Apply stop-work authority and basic life-saving rules correctly
Select appropriate PPE by task/area and report hazards effectively
Maintain safe access and housekeeping standards in wet processing areas
Area Safety, Environmental Control, and Emergency Response3:55
Covers area-specific hazards (crusher, mill, wet areas, sampling, thickeners/filters), tailings and water recycle responsibilities, discharge/spill-to-environment response, and emergency response for fire, power loss, critical system failure, and medical escalation.
After completing this module, learners will be able to:
Identify high-risk zones and apply correct controls by area
Respond to environmental spills using containment and escalation protocols
Execute first-response actions for fire, power failure, and medical emergencies
Equipment Care, Isolation, and Reliability3:07
Description: Builds reliability routines for pumps/valves/blowers/agitators/instruments, daily inspections, abnormal condition recognition, control loop verification, permit-to-work and LOTO interfaces, return-to-service discipline, and continuous improvement via incident learning and MOC.
After completing this module, learners will be able to:
Perform routine equipment checks and recognize early failure indicators
Verify instrument/control loop integrity before making process changes
Interface safely with maintenance using permits/LOTO and controlled restart steps
Apply incident learning and MOC thinking to reduce repeat failures

Requirements

Basic mining/plant familiarity (crushing, grinding, pumps, and slurry handling)
Comfort with simple shift metrics (reading trends for grade, recovery, flow, density, pH)
Ability to follow SOPs and safety procedures (PPE, LOTO awareness, chemical handling rules)
Basic numeracy for daily checks (e.g., reading gauges, setpoints, and logs)

Description

Bastnäsite Flotation & REE Concentrate Production (GLR) is a practical, operator-focused course designed to build job-ready capability for running a rare earth concentrator and consistently producing a stable REE concentrate. The course starts by explaining what bastnäsite is, why it matters to the rare earth value chain, and how flotation fits into the overall pathway from ore to concentrate and then to downstream metallurgy. Learners will understand the key performance language used on site—REO grade, recovery, mass pull, and tails losses—and how these KPIs are linked to day-to-day operating decisions.

From there, the course connects upstream plant stability to downstream flotation performance. Learners work through ROM handling and feed blending, crushing fundamentals, grinding for liberation (including the P80 concept), and classification control using cyclones and screens. This foundation makes it clear why recovery losses and grade dilution often originate upstream, even when the flotation cells appear to be the problem.

The course then focuses on flotation operations and control, including rougher–cleaner–scavenger circuit roles, air rate and froth depth control, circulating load behavior, and the practical use of collectors, depressants, frothers, and pH control to maintain selectivity. Water chemistry effects—such as Ca/Mg hardness and recycle-water buildup—are explained in operational terms so learners can diagnose drifting performance without guesswork. Finally, learners develop structured troubleshooting skills for low recovery and low grade/high gangue using repeatable checklists, correct sampling practices, and simple mass-balance thinking to confirm whether issues are real or measurement-driven.

Safety and reliability are integrated throughout, covering hazard zones, critical safeguards, chemical handling and spill response, LOTO and permit-to-work discipline, and equipment care routines for pumps, blowers, valves, agitators, and instrumentation. By the end of the course, learners will be able to stabilize plant performance, reduce tails losses, protect concentrate grade, and respond to upsets with disciplined, defensible actions.

Who this course is for:

Flotation operators, mill operators, and concentrator technicians working in REE or industrial minerals plants
Shift supervisors, control room operators, and field operators responsible for recovery, grade, and plant stability
New hires and trainees preparing to work in crushing, grinding, classification, flotation, and dewatering areas
Maintenance and reliability team members who support pumps, blowers, reagent dosing systems, and instrumentation in the flotation circuit
HSE and operational support staff who need a clear understanding of process hazards, safeguards, and emergency response in an REE concentrator

Bastnäsite Flotation & REE Concentrate Production

What you'll learn

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Course content

Bastnäsite Fundamentals and Plant Role4 lectures • 12min

Feed Preparation and Plant Stability4 lectures • 14min

Reagents, Water Chemistry, and Froth Control3 lectures • 10min

Concentrate Handling, Metallurgical Control, and Troubleshooting3 lectures • 10min

Safety, Environment, Equipment Care, and Reliability3 lectures • 10min

Requirements

Description

Who this course is for: