Preparation method of high-temperature-resistant, wear-resistant and strong-impact-resistant anticorrosive microcrystalline glaze

Abstract

The invention relates to a preparation method of a high-temperature-resistant, wear-resistant and strong-impact-resistant anticorrosive microcrystalline glaze. The preparation method comprises the specific steps that firstly, a cover glaze and a ground glaze are prepared through melting, cover glaze frits (pieces) and ground glaze frits (pieces) are smashed respectively and then added into a ball mill, and grinding additives in a specified proportion are added into the ball mill for ball milling together; after powder with specified fineness is obtained through milling in the ball mill, the powder enters a packaging machine through a vacuum conveying system to be packaged into a bag; after the cover glaze and the ground glaze are packaged, an automatic enamel spraying process is carried out; and after glaze enamel spraying is completed, an enamel firing process is carried out, and finally the anticorrosive microcrystalline glaze can be obtained. The glaze prepared by the formula and the process has ultrahigh mechanical shock resistance, excellent thermal stress resistance and temperature difference sudden change resistance, excellent wear resistance and excellent acid corrosion resistance and alkali corrosion resistance, and is suitable for glass lining equipment and stirring accessories with a high reaction medium temperature or a solid-liquid mixed reaction medium with solid particle wear.

Description

technical field [0001] The invention relates to a preparation method of a high-temperature-resistant, wear-resistant and strong-impact anti-corrosion microcrystalline glaze. Background technique [0002] Silicate system glass-lined glaze, the main skeleton is made of SiO 2 Composition, the internal structure of this kind of glass-lined glaze is composed of silicon-oxygen tetrahedron [SiO 4 】The solid skeleton formed by mutual connection is relatively complete. Generally speaking, a real crystal has a complete and regular appearance and a complete and regular internal arrangement. Crystalline substances generally have a melting point, but there is no uniform arrangement of particles in the amorphous body, and the temperature required to destroy the structure of each part is different. , therefore, there is no definite melting point, which is an important feature that distinguishes it from crystalline objects. [0003] Glass-lined glaze is an amorphous object, similar to gl...

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Problems solved by technology

[0003] Glass-lined glaze is an amorphous object, similar to glass, in which the original crystals that are too late to participate in the reaction and a small amount of crystals precipitated during the quenching of the melt, these crystals are only embedded in the glass phase, and there are microcracks in the glass phase , which is the characteristic of this material. Although there are a certain number of crystals in the glass-lined glaze layer, the vast space is still a glass phase, that is, it is not a real crystal, and its internal structure is far less regular than that of crystal substances. Therefore, when the glaze layer When subjected to external force, the force is transmitted evenly along all directions and is open and broken, so the glaze layer's resistance to sudden change in temperature difference and mechanical shock resistance are greatly restricted.

The surface of the conventional glass-lined glaze is smooth and glassy after sintering. If the hard particles are repeatedly rubbed on the surface of the porcelain surface, the surface of the glass-lined layer of the equipment will be worn away, thus losing its good anti-corrosion performance.

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