Technology for processing 4N high-purity quartz by utilizing vein quartz as raw material

The invention relates to a method for processing 4N high-purity quartz by utilizing vein quartz as a raw material. The method is characterized by taking H2SO4 as a pickling reagent, adopting secondary water quenching and pickling optimization processes and comprising the following steps: 1. grinding the raw material vein quartz until the grain size of powder is not greater than 30mm and then screening the powder into 5-30mm; 2. washing the material to remove sundries and the material containing impurities; 3. roasting the material at 1000 DEG C for 0.5-2 hours and then quickly quenching the material in distilled water at room temperature; 4. drying the material and grinding the dried material until the grain size is not greater than 40 meshes; 5. roasting the material at 650 DEG C for 1-3 hours and then quickly quenching the material in distilled water at room temperature; 6. drying the material and screening the dried material into 40-70 meshes, 70-140 meshes and not greater than 140 meshes; 7. pickling and