Mining and minerals
Ore, concentrate, industrial mineral and bulk solid behavior
in mining and mineral processing
Ore fines, concentrates, industrial minerals, tailings and crushed rock are not one category
Particle size, shape, moisture, cohesion, bulk density, mineralogy, surface condition, abrasion and solids concentration decide whether a mining material flows, feeds evenly, separates cleanly, dewaters, and holds its grade. This page connects what you are seeing on the plant to the mechanism behind it and the measurement that settles it.
Find your route
Start with the material, then the behavior
Mining and mineral materials do not behave as one category. Pick the ore, concentrate, industrial mineral, tailings or crushed rock class, then the behavior you are seeing in the process. The result names the mechanisms worth separating, the measurement to start with, and where in the process it usually shows up. It is a triage route, not a diagnosis.
- 1Material
- 2Behavior
- 3Route
Step 1 Â What are you handling?
Step 2 Â What are you seeing?
Step 3 Â Your route
Material routes
Ore, concentrate, mineral and residue types
Mining and mineral processing handles powders, granules, crushed rock, slurries, filter cakes and recovered streams with very different particle sizes, densities, shapes, moisture contents, mineralogies and surface properties. The same site may handle iron ore fines, base-metal concentrates, bauxite, industrial minerals, carbonate powders, silica, clays, fertilizer minerals, carbonaceous solids, precious-metal feeds, tailings and screening fines. Each class has its own behavior profile, so the most useful route starts with the material.
Iron ore fines and mineral concentrates
Iron ore fines and concentrates can compact, retain moisture, and segregate in storage. Size and density directly influence flow, feeding, blending, and agglomeration.
Copper, lead, and zinc concentrates
Base-metal concentrates are often fine, dense, and moisture-sensitive. Cohesion, oxidation, and consolidation can affect discharge, dosing, blending, and downstream recovery.
Bauxite and alumina feed materials
Bauxite, alumina hydrate, and calcined alumina vary in size, abrasiveness, moisture, and dustiness. These properties influence transfer, wear, feeding, and calcination stability.
Industrial mineral powders and fillers
Industrial mineral powders differ in fineness, shape, surface treatment, and bulk density. These differences directly affect flow, dust, packing, dosing, handling, and product consistency.
Limestone, dolomite, and carbonate minerals
Carbonate minerals can compact, generate fines, and absorb moisture during handling. Particle size, shape, and mineralogy directly influence flow, grinding, blending, and reactivity.
Silica sand and fine crystalline quartz powders
Silica sands and quartz powders range from free-flowing grains to cohesive fines. Grading, angularity, moisture, and dust control influence transfer, classification, and handling.
Clay, kaolin, and bentonite mineral powders
Clay minerals can retain moisture, swell, cake, and form cohesive agglomerates. Surface chemistry, drying history, and fineness influence flow, dispersion, and processing.
Potash, phosphate, and fertilizer minerals
Potash and phosphate minerals can cake, abrade, and segregate during storage and transport. Moisture, crystal size, and handling determine flow, attrition, and product uniformity.
Coal, coke, char, and carbonaceous minerals
Coal, coke, and carbonaceous solids vary in size, porosity, moisture, and friability. These properties directly influence dust, segregation, breakage, feeding, and combustion behavior.
Precious-metal ores, concentrates, and flotation feeds
Precious-metal feeds may combine dense mineral grains, fine gangue, and variable moisture. Liberation, classification, and controlled blending conditions influence overall recovery.
Tailings, filter cakes, and recovered fines
Tailings and recovered fines vary in solids content, particle size, mineralogy, and consolidation. These differences affect pumping, dewatering, drying, storage, and reuse.
Crushed rock, aggregates, and screening fines
Crushed rock and screening fines vary in grading, shape, strength, and moisture. These differences influence segregation, wear, conveying, stockpiling, and final product consistency.
Quick comparison
Material route, common risk, first measurement
The same symptom points to different mechanisms depending on the material class, mineralogy, moisture state and process step. This is the fast bridge between mining material behavior and the most useful first measurement route.
Mining and mineral material routes, the handling or processing risk each one carries most often, and the measurement worth running first.
| Material route | Common handling or processing risk | Useful first measurement |
|---|---|---|
| Iron ore fines and mineral concentrates | Compaction, moisture retention, segregation, and unstable feeding | Particle size, moisture, bulk density, and flowability assessment |
| Copper, lead, and zinc concentrates | High density, moisture variation, oxidation, and transfer instability | Particle size, moisture, density, and flow testing |
| Bauxite and alumina feed materials | Segregation, dust release, variable moisture, and inconsistent conveying | Particle size, moisture, bulk density, and abrasion assessment |
| Industrial mineral powders and fillers | Cohesion, dustiness, segregation, and dosing variation | Particle size, bulk density, flowability, and moisture |
| Limestone, dolomite, and carbonate minerals | Compaction, fines generation, abrasion, and moisture uptake | Particle size, mineralogy, moisture, and flowability |
| Silica sand and fine crystalline quartz powders | Abrasion, dust release, segregation, and unstable classification | Particle size, shape, moisture, and bulk density |
| Clay, kaolin, and bentonite mineral powders | Moisture sensitivity, cohesion, caking, and difficult discharge | Moisture, particle size, plasticity, and flow testing |
| Potash, phosphate, and fertilizer minerals | Caking, attrition, moisture uptake, and segregation | Particle size, moisture, strength, and caking assessment |
| Coal, coke, and carbonaceous minerals | Dustiness, attrition, moisture variation, and segregation | Particle size, moisture, friability, and bulk density |
| Precious-metal ores and flotation feeds | Liberation variation, segregation, moisture, and inconsistent recovery | Particle size, mineralogy, density, and liberation assessment |
| Tailings, filter cakes, and recovered fines | High moisture, consolidation, variable composition, and poor discharge | Moisture, particle size, density, and dewatering behavior |
| Crushed rock, aggregates, and screening fines | Segregation, abrasion, fines variation, and unstable conveying | Particle size distribution, shape, moisture, and bulk density |
One risk per row is the one most often reported, not the only one that occurs. Use the selector above to work a specific combination through to a route.
Recurring problems
Start from the behavior you can see
These eight cover what actually gets reported on a mine site or a mineral processing plant. Dewatering difficulty takes the place of electrostatic behavior here, because the wet end of this industry is where the throughput is lost and static rarely is. Each card runs back to the mechanisms worth separating and forward to the measurement that confirms which one is governing.
Also covered: bridging & arching, adhesion, electrostatics. All symptoms
Measurement routes
The test that answers your question
Mining material behavior rarely resolves to one number. Grading, particle shape, mineralogy, moisture, cohesion, bulk density, solids concentration, particle strength and segregation tendency can all sit behind the same visible process symptom. Pick the method by the question, not by the symptom.
Process routes
Where the behavior actually shows up
The same mining material behaves differently depending on where it sits in the process. Stockpiling, crushing, conveying, grinding, blending, separation, dewatering, loading and tailings recovery each expose a different property and a different failure mode.
Go deeper
Guides and articles for mining and mineral behavior
Longer reads that work through the mechanisms behind these routes, from the visible process problem to material properties, measurement choice and interpretation.
FAQ
Mining and mineral processing questions
Need the measurement, not just the guidance? PowderTechnology.info works closely with Delft Solids Solutions,
a contract research organization specializing in the physical behavior of powders and granules. DSS provides
contract testing and characterization, with its laboratory working in accordance with ISO 17025.
Contact Delft Solids Solutions.
