High‑grade engineered quartz slabs and premium silica powder demand strict standards for whiteness, surface cleanliness and purity. Surface contaminants like yellow oxide scale, black stains and discoloration, plus trace metallic impurities in raw quartz, directly trigger color deviation, pinholes and surface flaws in quartz slabs, and reduce the whiteness of silica powder. Conventional physical beneficiation cannot fully eliminate these defects. Acid leaching is a well‑proven core technology for deep purification and whitening of quartz materials.
Guote provides complete turnkey EPC acid‑leaching production lines for slab‑grade silica sand and high‑purity silica powder. Accepting silica sand and quartz lump ore as feedstock, the integrated system integrates acid leaching, acid stripping, washing and wastewater recycling in a compact layout. Built with high‑quality corrosion‑resistant materials and eco‑friendly process design, the line delivers consistent non‑yellowing whiteness and deeply removes metallic impurities to achieve ultra‑high quartz purity. Featuring high automation, low acid consumption and stable performance, it fully supports large‑scale standardized production of high‑purity whitened quartz products.
