The narrow profit margins in the refinery business motivate us to extend the useful life of our assets without significant investmentsInvestment. One of the refinery's key assets is its electrolytic cells; the currentCurrent refinery has 1,776 active cells, most of which were installed 20 to 30 years ago nearing the end of their designDesign lifespan. To address declining cell performancePerformance, we sought to improve cell tightness, eliminate current leakageCurrent leakage, enhance current efficiencyCurrent efficiency, and prevent structural deterioration. The concept of using monolithic cell linersCell liners emerged as a solution to these challenges. These liners offer a practical method for replacing or repairing damaged cells while maintaining production capacity. They are designed to operate at high temperatures and withstand corrosive electrolytic acid solutions. Additional benefits include improved thermal insulation, potentially leading to energy savings. This paper details the designDesign, manufacturing, installation, and performancePerformance of these monolithic cell linersCell liners at the Chuquicamata Refinery, focusing on initial production phases and progression from late 2024 to early 2025. This work was carried out in collaboration with the North American company Sunwest, which specializes in manufacturing this type of monolithic coating.