Porcelain material and production method thereof

Abstract

A porcelain material is prepared from raw materials in percentage by mass as follows: 46%-60% of a pegmatite weathered material of Xuefeng Mountain, 5%-15% of high-quality kaolin I, 4%-10% of high-quality kaolin II, 25%-35% of high-quality potassium feldspar, 15%-25% of high-quality quartz, 3%-8% of high-quality talc and 2%-3% of a special-grade plasticizer. The production method of the porcelain material comprises steps as follows: the raw materials in percentage by mass are put in a ball grinding mill and ground until the fineness is 320 meshes and screen residues are 0.2%-0.3%; the raw materials are subjected to vacuum pugging, molding, fettling of a finished green body, biscuiting, polishing, glazing, biscuiting, internal glazing, color painting, glaze spraying, encastage and one-step firing for 16 h, then fire is stopped, a product is cooled to the room temperature, and porcelain is produced. A porcelain formula is improved, so that whiteness and glossiness of the porcelain are further improved, and aesthetic requirements of modern people for high-grade porcelain are met; the whiteness of a finished porcelain product is 90 degrees or higher, the glossiness is 85% or higher, the water absorption rate is lower than 0.1%, heat stability of the product is good, and defects of glaze cracking, bursting and the like during heat and cold exchange at the temperature from 180 DEG C to 20 DEG C are avoided.

Description

technical field [0001] The invention relates to the field of a porcelain raw material formula, in particular to a porcelain formula with Xuefeng mountain ball clay as the main raw material. Background technique [0002] Porcelain is a kind of utensil composed of porcelain stone, kaolin, Yingshi, mullite, etc., with glass glaze or painted surface applied. Porcelain is formed by firing at a high temperature (about 1280°C-1400°C) in a kiln, and the glaze color on the surface of the porcelain will undergo various chemical changes due to different temperatures. The sintered porcelain body generally contains less than 1-1.5% iron and is impermeable. Because of its relatively low cost and wear-resistant and impermeable properties, it is widely used by people all over the world. It is a treasure displayed by Chinese civilization. . [0003] A natural mineral or rock used in the manufacture of pottery and porcelain. There are three main categories of clay, quartz, and feldspar. F...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the whiteness of porcelain is about 65-75 degrees, the thickness is about 3-6mm, and the glossiness is less than 80%. Such porcelain can be used as ordinary household utensils with low requirements, but as an ornamental For high-grade porcelain, it is not beautiful enough and does not meet the aesthetic requirements of modern people.