Nikkelprodusenter står overfor mange utfordringer – fra å redusere energiforbruk, til kjemikalier og miljøkostnader. Skal man få mest mulig ut av laterittisk eller svovelholdig malm, krever det en pålitelig partner. Alfa Lavals vide kompetanse med nikkelraffineringsprosesser og et bredt utstyr og tjenesteportefølje bidrar til å redusere kostnader og miljøpåvirkning, gjenvinne verdifulle mineraler og biprodukter og øke utbyttet.
Optimizing nickel smelting and refining
Producing refined nickel ores and concentrates from lateritic or sulfidic ores is a complex task. Alfa Laval help nickel producers get the most out of raw ores – cost-effectively, energy-efficiently and in an environmentally friendly way. From smart reuse of process waters and recirculation of cooling waters to treatment of bleed streams and smart solid waste reduction, count on Alfa Laval.
Big energy savings through heat transfer
Energy efficiency makes a major contribution to nickel processing profitability. By harnessing the heat generated during nickel extraction processes and reusing it in other processes, nickel producers not only save big on energy costs, but also boost productivity.
Introducing Alfa Laval heat exchangers into nickel processes – from acid leaching to electrowinning and other energy-intensive extraction processes – enables the smart reuse of available heat in various process streams.
To cope with the aggressive environments involved in nickel processing, our compact plate heat exchangers are not only thermally efficient but also highly corrosion-resistant.
Our plate heat exchangers effectively transfer the heat from hot rich acid to pre-heat the incoming acid leaching agent while at the same time cooling the rich acid prior to leach separation and extraction.
Another area where plate heat exchangers deliver optimum heat recovery is electrolytic extraction. A pair of Alfa Laval gasketed heat exchangers are an excellent choice for acid leaching processes. The hot, spent electrolyte is used to preheat the strong liquor prior to electrowinning, thereby saving significant amounts of heating energy.
With smart, low-maintenance, space-saving designs, all Alfa Laval heat exchangers promote high turbulence and velocity control, minimizing the need for cleaning and maximizing energy savings.
Optimizing separation efficiency
Whether used for solvent extraction, electrowinning, dewatering, recovery of intermediate products, or separation processes, Alfa Laval decanter and separators are reliable, resilient and equipped to deal with the complex solid-liquid or solid-liquid-liquid separation processes involved in nickel production.
Due to highly efficient operation, robust design and the resulting high purity output, Alfa Laval separation solutions are an integral part of nearly all processes in the recovery of mineral raw materials. Which is why nickel producers the world over rely on Alfa Laval to help maximize productivity and increase yields.