The simultaneous boom in the global energy storage and AI computing power sectors has driven a continuous surge in demand for battery-grade lithium feedstock. Home to more than half of the world’s salt lake lithium resources, the Latin American Lithium Triangle has emerged as a core supply hub for the global new energy industrial chain. Recent industry interviews indicate that the Latin American mining market is witnessing explosive demand for solutions targeting the recovery of secondary resources from tailings and mother liquors. Driven by a combination of regional policy, market and environmental imperatives, mining enterprises are forced to move away from extensive mining and adopt a green production model featuring tailings valorization and closed-loop brine circulation.
For policies, Chile and Argentina have rolled out a string of new mining regulations recently. Chile has introduced the CEOL special lithium resource operating contract, which explicitly encourages lithium recovery from tailings and waste salt-lake mother liquors with supporting tax incentives. Argentina mandates that salt lake projects comply with zero liquid discharge standards, requiring maximum recovery of lithium, boron and rare metals contained in tailings and mother liquors. Multiple regional economies are aligning with the Global Industry Standard on Tailings Management (GISTM), substantially raising environmental costs for tailings storage and wastewater discharge. The traditional model of simply stockpiling waste residues and discharging mother liquors directly is no longer viable. From a market standpoint, operating costs for new salt lake and spodumene mines keep climbing. Existing tailings and lithium precipitation mother liquors contain abundant low-grade lithium resources. Secondary recovery requires no large-scale capital investment in mining infrastructure, enables rapid expansion of lithium carbonate production capacity, and has become a key lever for mining operators to boost profitability.
However, mining operations across Latin America are currently confronted with a common technical challenge. Off-the-shelf recovery reagents and standardized processes are only suitable for raw salt lake brines, and fail to accommodate the high salinity, heavy impurity loads and complex ionic composition of tailings leachate and recycled mother liquors. Many projects that adopt generic flotation and extraction solutions suffer from poor lithium selectivity, high reagent consumption, phase emulsification and steadily declining recovery rates during long-term operation, resulting in losses right after the commissioning of tailings recovery facilities. Furthermore, most technology service providers can only offer solutions for individual process sections. They are unable to achieve material balance across the full workflow encompassing raw brine enrichment, mother liquor recovery, tailings leaching and purification & impurity removal, which leads to overall production capacity imbalance once projects are scaled up to ten-thousand-ton scale.
As a global technology service provider for salt lake lithium extraction, BICHEM closely addresses local demands for valorizing tailings and mother liquors. Supported by three core technological barriers — patents for extractant application, adsorbent condition adaptation and integrated full-process system technologies — we have developed all-in-one recovery process systems tailored to diverse scenarios, bridging technical gaps for local mines pursuing circular mining.
Unlike service providers in the industry that only supply reagents or standalone equipment, BICHEM focuses on developing customized end-to-end process solutions based on the water characteristics of tailings and lithium precipitation mother liquors from various mining areas across Latin America. For high-sodium, high-magnesium lithium precipitation mother liquors originating from the Salar de Atacama and leachates generated from historic boron mine tailings, we deploy a closed-loop multi-stage countercurrent extraction-scrubbing-stripping circuit built upon our extractant application patents. It achieves selective separation of lithium from sodium, potassium, boron and other impurities, addressing persistent pain points of lithium-sodium co-extraction and high reagent consumption seen in conventional systems. Supported by BICHEM’s proprietary pre-treatment impurity removal technology leveraging adsorbent application patents, suspended solids and heavy metals carried over from tailings leaching are intercepted upfront. This prevents fouling and performance deterioration of membrane modules and extraction systems at the source, greatly extending the continuous operating period of the facilities.
Leveraging proven scale-up capabilities for commercial production, BICHEM delivers full-process technical packages covering laboratory evaluation of tailings samples, pilot testing and the construction of ten-thousand-ton-scale industrial production lines. In multiple salt lake projects deployed across Latin America, we have integrated the combined tailings and mother liquor recovery process into complete DLE lithium extraction flowsheets. This delivers an overall lithium recovery rate exceeding 95%, alongside closed-loop water recycling, cutting wastewater discharge by more than 90% and fully complying with stringent local environmental regulations. For existing operational projects, we offer lightweight process revamping services. Simply by restructuring operating parameters and optimizing material circulation logic, untapped lithium resources contained in tailings and mother liquors can be recovered, enabling a quick return on investment for technical upgrades.
Unlike regional technology firms, BICHEM has established technical service centers in Chile, Germany and Singapore, with local technical teams tailored to high-altitude arid operating conditions. Our solutions are well adapted to Latin America’s mining environments featuring high elevations, large diurnal temperature swings and freshwater scarcity. We also collaborate with leading global partners such as Schneider Electric to ensure stable and automated operation of the complete process system. Drawing on more than a decade of experience delivering cross-border projects, we have developed a full-chain integrated process covering “virgin brine mining – tailings leaching and recovery – lithium precipitation mother liquor circulation – membrane-based refining”. This enables mines to achieve a genuine transformation from a simple “resource extraction” model to “circular resource regeneration”.
Against the backdrop of persistently tight global lithium supply and demand and green mining evolving into a mandatory threshold, the valorization of tailings and mother liquors represents an inevitable path for the long-term development of Latin America’s lithium industry. Equipped with patented scenario-adapted processes, proven track records on ten-thousand-ton-scale projects and global localized service capabilities, BICHEM provides cost-effective, stable and compliant secondary resource recovery solutions for salt lake and lithium mining operators across South America. We help local stakeholders unlock latent lithium resources trapped in tailings, striking a balance between capacity expansion, cost management and environmental compliance, and delivering technical momentum to secure a steady supply of battery-grade lithium feedstock for the global new energy sector.
