High-strength pearl bone-china blank and preparation method thereof

Abstract

The invention relates to a high-strength pearl bone-china blank and a preparation method thereof. The blank comprises the following main materials in parts by weight: 40-46 parts of bone charcoal, 2-5 parts of natural pearl particles, 10 parts of quartz, 9 parts of feldspar, 4-6 parts of Yunnan silt, 4-6 parts of Taolong soil, 6-10 parts of Longyan clay, 10 parts of greensand, and 8 parts of Yusi soil; and an additive comprises a plasticizer accounting for 1-3% of the total weight of the main materials, and high-viscosity cellulose accounting for 0.02-0.05% of the total weight of the main materials. In the preparation method, the proportion of large ball stones to medium ball stones to small ball stones of a ball mill is 2:3:5, the proportion of the materials to the balls is 1:2, the grinding time is 20-30 hours, the fineness of slurry is indicated by controlling remains of a 250-mesh screen within 0.1-0.3%, and the viscosity is 30-50S by a TU-4 viscometer. The method comprises the steps of performing screening to remove iron, performing recycling for 3-5 times, storing and aging the raw materials for 3-7 days, and screening to remove iron again in a filtering and stirring process. According to the method disclosed by the invention, the natural pearl is added to keep the content of tricalcium phosphate after sintering, so that the high-strength pearl bone-china blank can still reach an international recognized bone-china standard.

Description

technical field [0001] The invention relates to bone china raw materials, in particular to a high-strength pearl bone china blank and a preparation method thereof. Background technique [0002] Traditional bone china is made of exquisite materials, finely crafted, and has strict standards. Its regularity, whiteness, transparency, and thermal stability all depend on its raw materials, silicon oxide, aluminum oxide, and calcium oxide. Among them, calcium oxide is the natural bone carbon of animals, the higher the content, the better the color. When the bone carbon content reaches a certain ratio, the quality of porcelain will be greatly improved, which is mainly reflected in the gloss and moistness of the vessel. However, if the content exceeds a certain ratio, the composition of the clay will be relatively reduced, and the porcelain will become too soft, and it will be easier to burn and crack during the production process, requiring higher technology in forming and increasi...

AI Technical Summary

Problems solved by technology

However, if the content exceeds a certain ratio, the composition of the clay will be relatively reduced, and the porcelain will become too soft, and it will be easier to burn and crack during the production process, requiring higher technology in forming and increasing the difficulty of firing.

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