Abstract: To achieve the full-scale utilization of a quartz sandstone deposit in Yunnan Province, this paper systematically investigates ore beneficiation and foam ceramic synthesis using purified tailings, based on process mineralogy. Mineralogical analysis via chemical assays, X-ray diffraction （XRD）, and scanning electron microscopy （SEM） reveals that the quartz primarily exhibits medium-fine grained sand textures （0.1-0.4 mm） with impurities distributed in distinct modes: kaolinite, mica, and feldspar occur as cementing agents along particle edges and fractures, while zircon and rutile exist as detrital inclusions. Notably, quartz surfaces exhibit heterogeneous impurity coverage—some particles are relatively clean, whereas others host surface-adhered clay/dust or encapsulate fine-grained rutile and clay minerals, This poses challenges for impurity removal and final product quality. A multi-stage beneficiation process of crushing-grinding-screening—gravity for zirconium-titanium removal—magnetic separation for iron impurities—reverse flotation for mica/feldspar separation is used for raw ore containing 98.28% SiO₂, 0.069% Fe₂O₃, and 0.051% TiO₂. This process yields a quartz concentrate with a SiO₂ recovery rate of 67.13%, containing 99.87% SiO₂, 54 μg/g Fe₂O₃, 0.015% Al₂O₃, 17 μg/g TiO₂, and 0.6 μg/g Cr₂O₃, meeting Grade II specifications of Photovoltaic Glass Raw Materials. The purified quartz tailings are synergistically blended with proximal feldspar tailings （4∶6 mass ratio） for foam ceramic synthesis. Systematic optimization of sintering parameters—7% Na₂CO₃ （flux）, 1% SiC （pore-forming agent）, and a thermal regime of 10 min preheating at 500 ℃, followed by 5 ℃/min heating to 1 200 ℃ with 15 min holding—produced ceramics with superior properties: compressive strength 12.46 MPa, water absorption 3.22%, apparent density 1.63 g/cm³, and thermal conductivity 0.062 W/（m·K）, fulfilling construction material requirements. This integrated strategy achieves 92.7% total resource utilization efficiency, establishing a closed-loop utilization model that aligns with circular economy principles. The methodology provides a technical blueprint for sustainable exploitation of analogous quartz resources.