We utilize advanced gravity separation technology to efficiently extract and refine valuable metals, setting industry standards for sustainability and quality.
Every engagement begins with a feed sample, an assay, and a metallurgical balance. Everything that follows — commercial structure, plant design, throughput guarantee — is engineered backwards from those numbers.
Build-Own-Operate slag recovery plants, installed adjacent to host smelter operations.
Atoll funds, builds, operates and maintains the recovery plant on the smelter's site under a long-term offtake. The host pays nothing in capex; we monetise recovered metal under a contractual split. Five active BOO plants globally.
Engineered gravity-separation plants for chrome, manganese and silicomanganese ores and slags.
Custom-designed plants delivered turnkey. APIC jig as the heart of the circuit, integrated with screening, dense-media separation, and tailings handling. Throughputs from 50 to 250 t/h.
Process customer slag at our facilities under a per-tonne treatment fee.
For producers without a dedicated recovery plant, we accept slag stockpiles at our regional facilities, run them through APIC jigs, and return concentrate plus clean tailings. Logistics and assay protocols handled in-house.
Pyrometallurgical recovery of fines and difficult feedstocks via DC arc furnace.
Where gravity separation reaches its physical limit — sub-1 mm fines, low-grade tailings, oxide concentrates — we deploy DC arc furnace technology to smelt and recover otherwise unrecoverable metal units.
The APIC Jig is a gravity separator which separates particles of different densities in a homogeneous bed of solid material. Valuable products can thus be separated from waste material, effectively producing clean, saleable products.
The underbed air pulsation of the water in the jig submits the homogeneous bed of particles on the screen deck to vertical fluid pulses of extension and compression phases, which results in the densimetric stratification of the particles. The denser, more heavy particles (sinks) settle and the lighter, less dense particles (floats) rise to the top of the material bed. The number and widths of the compartments in the jig are selected to achieve the most efficient separation. Where necessary, a ragging bed is installed for the recovery of fine material. The discharge mechanisms permit a smooth and accurate evacuation of sinks and middlings — controlled by a float which is continually positioned at the desired density interface within the bed. Electronic control provides a precise and consistent operation regardless of feed variations, with pulse timings automatically adjusted for bed-level changes.
Atoll Metal Recovery makes use of Mintek's patented DC arc furnace technology to remelt and refine ultrafine baghouse dusts and other ultrafine wastes from the ferroalloy industry into valuable ferroalloys.
A continuous direct current is supplied by a transformer and rectifier. The central graphite electrode forms the cathode (–) and the hearth the anode (+). The anode and metal bath are kept at earth potential, while an arc is struck between the cathode and the slag bath. Convection between the arc, a high-velocity jet of plasma, and the bath results in most of the energy transfer. Feed can be introduced through a hollow electrode — placing it into the hottest zone and maximising reaction rates — or through feed ports in the roof, allowing the use of a solid electrode which is simpler and more cost-effective to operate. We are currently operating a 40 MVA DC furnace at Mogale Alloys, producing a Fe, Ni, Cr alloy from stainless steel EAF dust and chromite fines.
Since 1998, the APIC fines jig has been standard on all Titaco / Mintek Metal Recovery Plants. Atoll has operated plants at Transalloys, Middelburg Ferrochrome, Hernic Ferrochrome, Metalloys, SA Ferrochrome, International Ferrometals and ASA Metals in South Africa; Vargön Alloys in Sweden; Boulogne-Sur-Mer, France; Tulcea, Romania; Zestafoni, Georgia; Antalya, Turkey; and Johnstown, USA.
“Outstanding contributions to science — the application of science in the development of APIC jig technology for metal recovery from ferroalloy slag, now standard on all Titaco / Mintek Metal Recovery Plants.”
One of the original developers of the APIC jig technology at Mintek. Dr Scott has overseen process design and metallurgical test work for every Atoll plant commission since 1998 and remains the primary technical authority for new plant evaluations.
We respond to all qualified enquiries within one business day. Bring your slag assay, tonnage, and target alloy — we will return a metallurgical balance and a commercial framework.
