How to choose healthy, beautiful and practical bone china tableware? From the perspective of porcelain When buying bone china white porcelin dinnerware, it is better to choose bone china and strengthened porcelain, both of which are the materials of high-quality tableware. Bone China is a recognized high-end porcelain tableware in the world. It is a natural milky white color with high permeability and a light and delicate texture. The molding and color formation of bone ash itself mainly rely on silica, alumina and calcium oxide. The higher the content of calcium oxide, the better the color. In nature, there are not many sources of calcium oxide, and animal bone meal is often chosen as the source of calcium oxide. This year, new bone china, represented by Zibo, which selects mineral synthetic bone powder as the source of calcium oxide, has sprung up and has become a new force in the high-end bone china market. When the bone meal content reaches a certain proportion, the porcelain quality will be greatly improved, which is mainly reflected in the gloss and moisturizing degree of the utensils. It is as white as jade and crystal clear and moist. It is an ideal product for various households, and the price is second to bone china. According to the characteristics of flower surface decoration, it can be divided into over-glaze, mid-glaze, under-glaze and colored glaze porcelain, and some uncolored white porcelain. The underglaze colors are mostly traditional blue and white and blue and white exquisite colors, the colors are relatively monotonous, and the price is moderate; the in-glaze colors are richer than the underglaze colors, and the product grades are higher, but the process requirements are strict, the cost is high, and the price is high; On-glaze chinaware ceramic are rich in colors, strong in three-dimensionality but low in surface smoothness, and are easy to process, so the cost is correspondingly low. In addition to the different artistic effects of the above different decoration methods, the main difference lies in the content of heavy metal elements such as lead and cadmium. Among them, the lead and cadmium content of in-glaze, under-glaze, and most colored glaze porcelain and white porcelain white porcelin dinnerware are very low. If in-glaze color is used in the processing of ceramic decals, inferior pigments are used, or in the design of the flower surface. If the amount of pigments with high lead and cadmium content is too large, or the temperature and ventilation conditions during baking are not enough, it is easy to cause excessive lead and cadmium dissolution. It depends on whether the shape is correct, whether there are damages, spots, bubbles, and smoothness. Bone china white porcelin dinnerware with thorny, spotty, or even cracked surfaces can easily overflow the lead in the glaze, so it is not suitable for tableware. The glaze on the surface of porcelain is made by firing at a temperature above 800°C. If it does not reach 800°C, the low temperature glaze will be harmful to the human body.
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