After the raw materials enter the factory, they are carefully selected and cleaned, and the ingredients are weighed according to the production formula. After ball milling and fine grinding in a ball mill to achieve the required fineness, iron is removed and screened. Then, according to the different molding methods, the machine-made molding adopts mud pressure filtration dehydration, and the mud is refined in vacuum for later use. The pulping process is as follows: firstly, the slurry is filtered and dehydrated, then coagulant is added for pulping, iron is removed and screened for later use; The slurry for grouting molding is processed by vacuum to become the finished slurry for later use.
Forming technology: it is divided into rolling forming and grouting forming. And then dried and trimmed for later use.
Sintering process: after obtaining the white blank, it is fired in the kiln, and after finishing, glazing and glaze firing, the white porcelain after leaving the kiln is selected to obtain qualified white porcelain.
Color baking process: after the qualified white porcelain is decaled and inlaid with gold, it is roasted in the flower baking kiln, and after the kiln is opened, it is inspected and selected to get the qualified flower porcelain products.
Generally speaking, ceramic tableware can be divided into five categories, namely: magnesium porcelain tableware, magnesium reinforced porcelain tableware, reinforced porcelain tableware, shellfish porcelain tableware and glazed porcelain tableware. The following is a detailed introduction.
1, magnesium porcelain tableware magnesium porcelain is mainly made of magnesium-rich silicate mineral talc as the main raw material of porcelain clay, which is fired at a high temperature of 1380 degrees Celsius. Therefore, magnesium porcelain tableware has outstanding characteristics such as high whiteness, high strength and high thermal stability. White as jade, crystal clear and moist, it is the best choice for tableware in star-rated hotels. It has been designated as the porcelain for state banquet by the Great Hall of the People and Diaoyutai State Guesthouse, and selected as the special porcelain by Beijing Wang Fu Hotel. Magnesium porcelain tableware has the unique properties of high strength, acid and alkali resistance, lead-free toxicity and easy cleaning. Can withstand the collision of kitchen work and is not easy to be damaged. It is more suitable for modern lifestyles such as mechanical washing, high-temperature cooking and disinfection, continuous high temperature in electric oven and microwave heating. Magnesium porcelain tableware is selected by hotels in Beijing, Tianjin, Shanghai, Guangzhou and other big cities, and is favored by foreign businessmen, becoming a "hot commodity" in tableware exported to Europe, America, Southeast Asia and the Middle East.
2. Magnesium-reinforced porcelain tableware Magnesium-reinforced porcelain tableware is made of magnesite powder and high feldspar powder as the main raw materials and fired at a high temperature of about 65438 0.340 degrees Celsius. It has ultra-high strength, low brittleness, high whiteness and smooth glaze, and its service life is 3-5 times that of ordinary ceramics. It is an ideal product for disinfecting tableware among all household porcelain at present. Although the cost of a single product is about 25% higher than that of white porcelain and ordinary reinforced porcelain, it has long service life, low breakage rate, high grade and good image, and the accumulated total investment of actual tableware is lower than 50%. Porcelain is noble and elegant, with smooth and soft glaze, which has the characteristics of high temperature resistance, rapid cooling resistance, high temperature resistance and scratch resistance, and does not contain lead and other chemicals. It is pollution-free green tableware and environment-friendly tableware, and it is the first choice of ceramic tableware products for modern hotels, hotels and disinfection tableware companies, and has won high praise from users.
3, reinforced porcelain tableware reinforced porcelain is made of high-quality porcelain mud with aluminum and magnesium components and then fired at a high temperature of about 1300 degrees Celsius, so that they re-crystallize and magnetize into a substance. Collision resistance is its housekeeping skill. The glaze is milky white and delicate to the touch. The glazed surface of reinforced porcelain is deeper than that of magnesium reinforced porcelain. At present, the tableware used in the disinfection tableware market has been gradually replaced by magnesium reinforced porcelain and magnesium porcelain.
4. Sherry porcelain tableware Sherry porcelain is made of high-white mud, high-white glaze and shell powder. After scientific formulation, it is fired at a high temperature above 1200 degrees Celsius, then painted, glazed and fired at a high temperature for the second time. It is non-toxic, lead-free, harmless, never fades and is not easy to break. It is suitable for washing dishes. Shell porcelain tableware with white glaze and blue background is suitable for middle and low-grade ceramic tableware users.
5, glazed porcelain tableware glazed porcelain is painted directly on the embryo before the product is fired, and it is made by high temperature firing. It belongs to underglaze colored ceramics, and the patterns on porcelain are drawn by hand, which has artistic value. It is a tableware product with different styles from the above porcelain, which provides more choices for disinfection centers that need special tableware.