Study on Preparation and Properties of Bio-friendly Mineral Powder Based No-burning Ceramsite
In order to improve the diversified application of biocompatible mineral powder in the preparation of ceramsite,and to provide reference and guidance for the improvement of water treatment technology and filter media,quartz sand,zeolite powder and volcanic stone were used to prepare no-burning ceramsite.The initial raw material ratio was determined by single factor analysis.The results showed that the three types of ceramsite exhibited similar performance,but quartz sand ceramsite had lower production costs.Response surface analysis was employed when the mass ratio of quartz sand,low-alkali cement,silica fume,and wood fiber was 64∶36∶21∶6,the quartz sand ceramsite exhibited excellent performance,its clay content was 0.62%,porosity was 41.32%,wear rate was 0.16%,bulk density was 3.52 MPa,and specific surface area was 12.01 m2/g.