This article presents a comparative literature review of technologies for thickening gold-bearing flotation concentrates and recovering clarified process water. The approaches examined include conventional and high-rate thickening, optimisation of flocculation conditions and feedwell hydrodynamics, sediment-bed consolidation, lamella clarification, and superabsorbent-polymer-assisted dewatering. Technologies are assessed in terms of underflow solids concentration, valuable-particle retention, water recovery, overflow clarity, reagent consumption, and compatibility with downstream processing. Findings obtained directly from gold-processing materials are distinguished from evidence concerning other mineral suspensions, and the limitations of transferring these results to industrial applications are discussed. The review indicates that settling velocity or underflow density alone cannot provide a sufficient basis for technology selection. Identifying an effective treatment configuration requires an integrated assessment of mineralogy, particle-size distribution, water chemistry, slurry rheology, and gold partitioning between process streams. Clarified-water suitability for reuse should be verified through process-specific testing, while alternative separation methods should be compared using the same feed material under continuous operating conditions. The analysis provides a basis for selecting and validating separation arrangements that combine concentrate recovery with effective process-water management.