Pipeline Fabrication & Lining for Mining Slurry — Gold, Platinum, Coal, Manganese, Iron Ore

Hemera Projects supplies pipeline fabrication, internal lining, external coating and Denso wrapping for South Africa’s mining sector — gold, platinum-group metals, coal, manganese, iron ore, chrome, vanadium, copper and the broader mineral processing industry. Slurry pipework is the lifeblood of any concentrator or processing plant, and the protection system on that pipework determines whether assets last for decades or fail inside a single operating campaign.

Mining slurry is uniquely challenging from a pipework protection standpoint. The combination of fine abrasive solids, chemical attack from process water and reagents, mechanical wear at elbows and reducers, and the operating pressures of long pumping circuits all attack unprotected steel pipework. The right lining system — selected for the slurry chemistry, particle size distribution, velocity and operating temperature — extends pipework life by an order of magnitude and avoids the production losses associated with unscheduled pipework replacement.

Where mining slurry pipeline lining is critical

• Gold and platinum mining: Concentrator slurry lines, tailings pipework, leach raffinate, electrolyte pipework, gold elution circuit pipework. Operations on the West Wits, Free State, North West and Bushveld complexes.
• Coal mining and processing: Slurry pipework on coal washing plants, coarse and fine reject handling, coal slurry transport pipework on Mpumalanga and Highveld operations.
• Manganese mining: Slurry pipework on manganese concentrators in the Northern Cape — Kalahari basin and Hotazel operations.
• Iron ore: Slurry pipework on iron ore processing operations — Sishen, Kolomela and other Northern Cape iron ore producers.
• Chrome and vanadium: Slurry pipework on Bushveld chrome and vanadium operations.
• Copper: Slurry pipework on SA-side copper operations and the Phalaborwa copper-magnetite-vermiculite complex.
• Tailings and effluent transfer: Long-distance tailings pipework from concentrator to TSF (tailings storage facility), effluent transfer pipework, return-water pipework.

Pipeline lining and protection systems for mining slurry

• Rubber-lined pipework — Sheet rubber lining (hot-bonded or cold-bonded) for abrasive slurry service. The most common system for mining slurry pipework — natural rubber for general slurry, synthetic rubber blends for chemical-resistant duty.
• Polyurethane-lined pipework — Polyurethane internal linings for high-abrasion service, particularly on coarse particle handling and high-velocity slurry.
• Ceramic-tile-lined pipework — Hexagonal ceramic tile or alumina-ceramic-lined sections for the most extreme abrasion service — elbows, reducers, cyclone underflow, mill discharge.
• FRP (fibreglass) lining — Hand laid or filament wound for chemical service combined with moderate abrasion (acid leach, alkaline circuits).
• Concrete-lined pipework — Centrifugally cast concrete-lined pipework for water and dilute slurry service.
• Polyethylene (HDPE) lined pipework — HDPE internal linings for abrasion-corrosion duty.
• External pipe coating — Multi-layer epoxy/polyurethane systems for above-ground pipework; fusion-bonded epoxy and three-layer polyethylene for buried lines.
• Denso wrapping — Petrolatum tape, mastic, butyl and laminated wrap systems for in-ground pipework, valves, flanges, fittings.
• Heat-shrink sleeves — Field joint protection on coated pipelines.

Mining slurry pipeline turnkey delivery

Hemera supplies pipeline turnkey delivery for mining operators — from spool fabrication and internal lining in our workshop, through external coating, delivery to site, field installation supervision and field-joint coating. The benefit for the mining operator is a single accountable contractor for the protection system, predictable installation quality, and a documented project record that supports later maintenance planning.

Typical turnkey scopes include:

• Process pipework spool fabrication, internal lining and external coating in our workshop, delivered to site as ready-to-install lengths.
• Field installation supervision and field-joint coating.
• Hydrotesting, leak testing and commissioning support.
• Documented QC: lining thickness records, coating film thickness records, holiday detection records, hydrotest certificates.
• Operations & maintenance manuals for the lining and coating system.

Structural Steel Encapsulation & Pipe Bridge Protection on Mining Sites

The same coating and wrapping techniques that protect mining slurry pipework also protect the structural steel that supports it. Pipe bridges, pipe rack columns, conveyor structures and gantries on mining sites are exposed to atmospheric corrosion that conventional industrial environments don’t see — combined fume, dust, salt-laden air at higher elevations, and process water carryover.

Hemera’s encapsulation systems address this with engineered combinations of surface preparation, primer, intermediate coating, topcoat, and where necessary mastic seals or wrap protection at steel-concrete interfaces. Properly executed, the system extends the life of the structural steel by decades and avoids the catastrophic cost of column or gantry replacement on critical mineral handling infrastructure.

Mining Slurry Pipeline Turnkey Projects

For larger pipeline scopes, Hemera supplies pipeline turnkey delivery as the prime contractor — fabrication, lining, coating, delivery, installation supervision and handover. Our role as a coating and lining specialist gives us the unusual position of managing the protection system as the primary contractor, rather than as a sub to a generalist construction contractor — which means the protection system is right at handover, not patched after the fact.

For SA mining operators, the operational benefit of Hemera-supplied lined pipework is straightforward: longer service life, predictable maintenance intervals, documented protection records, and a single contractor accountable for the protection system. See related Hemera mining services: HP & UHP water jetting for pipeline cleaning before relining; acid-resistant lining for sulphuric acid plants on smelter operations; industrial lining and coating for storage tanks; thermal metal spray for mining smelter steel for related infrastructure protection.