Direct lithium extraction, DLE, is an emerging technology which selectively extracts lithium from mineral rich groundwater, commonly called brine. It is an attractive technology due its reduced land usage over traditional evaporation ponds and its significantly smaller carbon footprint compared to open pit mining. Multiple methods of DLE are being explored and they include solid adsorption, solvent extraction, and electrolysis with each method having its own benefits and drawbacks. The process the DLE COMP Team is designing is solid adsorption. In solid adsorption, a sorbent is used which will selectively adsorb lithium ions from the brine. A drawback is that the sorbent also has a high affinity for magnesium and iron ions which are present in the brine. To maximize lithium adsorption, the raw brine must first undergo a precipitation process to reduce magnesium and iron ion concentrations before proceeding to solid adsorption. The scope of the DLE COMP Team's project is to design the precipitation process and solid adsorption process for an input of 6000 gpm of raw brine. The output from the solid adsorption process will be unpurified lithium chloride solution which will undergo further treatment until it is pure enough to be sold as battery grade lithium salts.