Silicone brick is an acid refractory material, with good resistance to acid residue corrosion, load hardening temperature up to 1640 ~ 1670 ℃, at low temperatures for a long time application volume is relatively stable. Silica content of more than 94%. True density of 2.35g / cm3. With anti-acid residue corrosion function. Higher low temperature strength. Load hardening start temperature 1620 ~ 1670 ℃. In the low temperature for a long time application is not deformed. Thermal shock stability is low (water heat exchange for 1 to 4 times) to natural silica as a material, plus excessive mineralizer to enhance the quartz in the green into the scale of quartz. In the recovery atmosphere by 1350 ~ 1430 ℃ slow firing. Heated to 1450 ℃ when about 1.5 to 2.2% of the total volume of contraction, such residual shrinkage will make the slit close, to ensure that the masonry body has good air tightness and layout strength.

   The material for making the silica brick is silica. The higher the SiO2 content of the silica material, the higher the refractoriness. The most impeccable impurities are Al2O3, K2O, Na2O, etc., which severely reduce the refractoriness of refractory products. Silica brick with SiO2 content of not less than 96% of the silica as a material, to participate in mineralants (such as scales, lime milk) and binders (such as molasses, sulfite pulp waste), by mixing, molding, boring And other processes. Preparation of silica brick mud, with the guess in the usual amount of waste silicon brick, the purpose is to reduce the finished product when the shrinkage and stress, reduce the occurrence of cracks, improve the yield. The amount of participation is independent of the shape and weight of the brick. For the weight of less than 25Kg: the special-shaped brick can participate in 20%: 25Kg above the special-shaped brick can participate in 30%: against the specific brick brick can participate in 30%. Participation in waste silicon brick should pay attention to such achievements, excessive participation will reduce the finished product of the refractoriness and machine strength, increase the porosity. So, waste brick participation should not be excessive.

Preparation of silicate brick material should be in accordance with the order of the necessary order of the first batch of all kinds of silica powder and waste silicon brick powder will be necessary to participate in the wet mill, the first dry mixing 2 ~ 3min, and then participate in sulfite pulp waste, lime Milk and iron oxide powder mixture, according to the molding method of the request, and then mixed 8 ~ 17min. Mud mixed with the time is not dependent on the wheel weight, grinding disk rotation, the amount of material to participate, the hardness of the material, mud particles and forming methods. Special bricks and hand-formed muds are longer than the mud for machine molding. To deal with the mixed mud mud mixed time, should be confirmed by the test. The binding agent for the production of silica bricks is sulfite pulp waste and lime milk. When lime milk is used as a binder, it acts as a plasticizer. Lime milk to billet in the boring process which grow strength, in the firing is called mineralizer, to enhance the transformation of quartz.

   Silica brick with the production of mud as usual for the 5 to 9%, hand-formed mud water content of 7 to 9%, machine molding mud moisture of 5 to 6%.

      Silica brick is now important for the coking furnace of the carbonization chamber and the combustion chamber of the wall, steel furnace furnace furnace and the sedimentation chamber, soaking furnace, glass furnace refractory and ceramic firing kiln and other kilns The vault and the rest of the load-bearing parts. Also used for hot air furnace low temperature load-bearing parts and acid furnace furnace top