Hydrometallurgy
Keep your wet circuit stable—so recovery, uptime and compliance don’t fluctuate.
Hydrometallurgy is where metal is dissolved, purified and recovered through aqueous solutions. It’s also where plants face the toughest operational realities: unstable slurries, separation bottlenecks, scaling, foam, and impurities that threaten downstream performance.
SNF supports hydrometallurgy operations with a simple approach: start from your process constraints, then apply the right chemistry to restore stability and control.
What hydrometallurgy operators are really fighting, every day
Hydrometallurgy issues rarely stay isolated. When slurry behavior becomes unstable, separation efficiency drops—then your leach solution carries more solids, downstream purification and metal recovery steps become harder to control, and the plant ends up paying in lost availability and higher operating costs.
That’s why SNF focuses on process outcomes: restoring stability at the root cause, so performance stays predictable across the entire wet circuit.
The hydrometallurgy pain points SNF helps you solve
Leaching performance
In leaching tanks, recovery is often limited by pulp flow, mixing and reagent access. High viscosity or poor dispersion can silently reduce kinetics and make the circuit unpredictable.
SNF helps improve how the slurry moves and reacts by using rheology-focused solutions like FLOMIN™ RMA, designed to reduce yield stress and make pulps easier to circulate and mix—so reagents and oxygen reach the metal more effectively.
When the root cause is clay-driven instability upstream, SNF also supports ore preparation with dispersing solutions such as FLOMIN™ GDA, helping break clay agglomerates and reduce the “sticky fines” effect that destabilizes wet processing.
Solid–liquid separation
Separation is the heartbeat of hydrometallurgy. If your overflow carries fines, or if colloids refuse to settle, everything downstream suffers: SX stability, filtration, water recovery, and plant control.
SNF supports clarification and thickening by combining two complementary levers:
Coagulation (to handle colloids and clean the solution), supported by FLOQUAT™
Flocculation (to build fast-settling flocs and improve underflow), supported by FLOMIN™ TFA
The result operators look for is simple: cleaner PLS, denser underflow, and a circuit that stays stable even under changing ore and residue conditions.
Filtration & dewatering
Hydrometallurgy residues can be extremely difficult to filter—especially with gypsum/jarosite/silica-related structures. When filtration becomes a constraint, plants pay in throughput, moisture penalties, handling complexity and disposal costs.
SNF helps restore filtration performance using FLOMIN™ TFA filter aids, supporting faster filtration kinetics, improved cake release, and reduced cake moisture across multiple filtration technologies.
Scaling & deposits
Scaling is one of the most expensive “quiet killers” in hydrometallurgy: fouled heat exchangers, restricted lines, unstable operation, and forced shutdowns.
SNF supports deposit control with dispersant/antiscalant programs such as FLOSPERSE™, designed to limit deposit formation and growth—helping plants protect heat transfer, preserve flow capacity, and reduce cleaning frequency.
Foam control
Foam can cause overflows, poor level control and operational risk in leaching, thickeners, filtration steps, and some polishing units.
SNF helps stabilize operations with foam control solutions such as FLOMIN™ FRA, designed to suppress persistent foam and restore safe, predictable plant control.
Heavy metals & polishing
hydrometallurgy sites often require a strong polishing step to remove residual heavy metals before discharge or reuse. The challenge is meeting standards reliably, even when feed conditions vary.
SNF supports this final safeguard with chelation solutions such as METALSORB™, helping capture heavy metals and strengthen environmental compliance performance.
Beyond the hydrometallurgy plant: solutions for adjacent operational constraints
Hydrometallurgy performance is often impacted by what happens around it—logistics, handling, and water discipline.
Dust on roads, conveyors and stockpiles: SNF supports dust control with FLOMIN™ DCA programs.
Sticky ores and handling constraints: SNF supports dry handling with solutions such as FLOMIN™ SAP.
Agglomeration steps when required: SNF provides organic binders such as FLOFORM™.
Why hydrometallurgy operators work with SNF
Because hydrometallurgy is a stability game. When conditions change, you need more than supply—you need support.
Fast support on site, with the ability to mobilize global expertise when your circuit conditions change.
In-house polymer manufacturing to ensure stable quality, repeatable performance, and secure supply.
Lab work and industrial trials focused on measurable outcomes—stability, clarity, throughput, and water recovery.
Want to stabilize your hydrometallurgy circuit?
Talk to SNF about your bottleneck (leaching, separation, filtration, scaling, …)
