Supply of building ceramic glaze firing ceramic materials talc lower firing temperature, adjust the expansion coefficient

Jiangxi calcined talc composition as follows: LOI: 0.29% AL2O3 (aluminum oxide): 0.31% SiO2 (silica): 63.94% Fe2O3 (iron oxide): 0.19% CaO (calcium oxide): 1.07% MgO (magnesium oxide): 30.22 % K2O (potassium): 0.01% Na2O (sodium hydroxide): 0.06% TiO2 (titanium dioxide) 0.01% Whiteness (1200 degrees) 88.3 more ingredients are for reference only, subject to the buyer in accordance with the kind of sampling. This product is suitable for building ceramics factory antique bricks, tiles, outer wall and other manufacturers use. For a copy of the latest developments and model can contact me Contact: Fan Health Contact: 13927288341 Supply Area: Foshan, Qingyuan, Zhaoqing, Jiangmen, Yunfu, Heyuan, Shaoguan, Guangdong Province-based supplier and other objects: building ceramics manufacturer specific price based ceramics factory and the amount of payment and so may be the role of talc-based raw materials in the ceramic body increases with its contents varies. 1, in the talc-based raw materials added to the lower amount, generally in porcelain by adding 1% to 2%, in ceramic tiles, adding 3% to 8%, and can reduce the sintering temperature, the liquid phase at low temperatures formed under accelerated the mullite crystals generated, while improving the whiteness of products, mechanical properties and thermal stability. 2, when adding more talc 34% to 40% in the high temperature phase of magnesium silicate talc and clay silicate reacted cordierite 2MgO2 · 2Al2O3 · 5SiO2 ?, coefficient of thermal expansion of only 2 × 10 -6 / ℃ ~ 3 × 10-6 / ℃, thus greatly improving the thermal stability of the product. String 73, when the ratio of the amount of talc 50% or more, fired at about 1200 ℃ formed oblique enstatite MgO · SiO2 and cordierite can be 30% to 50%. This product has a high mechanical strength and thermal stability, due to the large dielectric consumption, it can be used as high-frequency insulation materials and require high mechanical strength, high insulating material. When the talc billet 70% ~ 90%, the resulting product is called steatite products, mainly by the ramp enstatite crystals can be used as high-frequency radio equipment, high voltage insulation. 4, talc for ceramic body, the body formed in enstatite, so that the whole body has a higher coefficient of expansion, resulting in the glaze layer compression stress, prevents crazing, and hygroscopic expansion body Late Glazed cracking. 5, outer body wall formula used in about 5% of talc-based raw materials do mineralizing agent, can significantly reduce the sintering temperature of about 20 ~ 30 ℃, in the case of temperature control blanks 1180 ± 10 ℃, the water absorption can be finished reach GB / T4100 · 2-1999 stoneware ceramic tile standards 0.5% 6, the fineness of the talc-based raw materials and finished products to reduce body temperature sintering absorption effect is very obvious. In general, where talc clay, talc clay adopt better technical and economic; and no talc clay in place, put a sheet of ground talc, it can be calcined at about 1350 ℃, breaking his blank sheet- Structure regrinding. Or the use of dried and finely ground ore into the Raymond after the election powder, preferably to 320 mesh fineness. 7, talc clay has a strong plasticity, plus fineness fine, no fine grinding can be used, both the role of the plastic material in the body, the role of the mineralizing agent was underway. Use good quality talc porcelain stoneware clay body recipe outer wall than the use of talc reduce the sintering temperature effect is obvious.