一级钠长石及其石磨粉（10目），低温 sio2:68%~70% al2o3:18%~21% fe2o3:≤0.15% na2o:≥10% k2o2≤0.5% 经1200℃烧后呈乳白色，白度≥52度。 one grade albite and feldspar power (10 items), low temperature sio2:68%~70% al2o3:18%~21% fe2o3:≤0.15% na2o:≥10% k2o2≤0.5% it presents cream color after burned by 1200℃, degree of white ≥52.