Preparation method of wet-process dry-grain polished crystal brick and polished crystal brick

Abstract

The invention discloses a preparation method of a wet-process dry-grain polished crystal brick and the polished crystal brick. The preparation method comprises the following steps: preparing a green brick; performing drying for the first time; applying surface glaze; performing ink-jet printing; applying dry particle protective glaze; performing drying for the second time; and performing firing and molding. The wet-process dry-grain polished crystal brick sequentially comprises a green brick layer, a cover glaze layer, a printing layer and a dry-grain protective glaze layer from bottom to top.The polished crystal brick with excellent performance is prepared by controlling production process parameters and the setting of proper components and proportion of dry particles and dry particle protective glaze. The method is suitable for existing production equipment, and a production line does not need to be modified; a glaze spraying process is adopted, a glaze layer is more uniform, and abell jar is adopted for glaze spraying, so that the glaze amount is more convenient to adjust, and the recycle is easy; the required glaze layer is thinner and is only 1 / 5 of the dosage of dry-processdry particles, so that the dosage is lower, the firing period is shorter, the production cost is reduced, and the production efficiency is improved; meanwhile, compared with a dry method, the defectsof bubbles, pinholes and the like of the glaze layer are fewer, and color development is finer and richer.

Description

technical field [0001] The invention relates to the technical field of building ceramic bricks, in particular to a preparation method of wet-process dry grain polished crystal bricks and polished crystal bricks. Background technique [0002] The biggest advantage of polished crystal tiles is that it has stronger physical and chemical properties compared with other polished glazed tiles. Wear resistance, pressure resistance, acid and alkali resistance and skid resistance are all very good. At the same time, due to the high composition of the glass when it is fired at high temperature, it has high gloss, fine hair color, strong three-dimensional effect, and shows a crystal clear appearance. The decorative effect is deeply loved by consumers. [0003] However, the dry primary firing process currently used in the production of polished crystal bricks, (1) Since this process uses a combination of thick and fine dry grain frits, in order to make the dry grains on the surface of t...

AI Technical Summary

Problems solved by technology

[0003] However, the dry primary firing process currently used in the production of polished crystal bricks, (1) Since this process uses a combination of thick and fine dry grain frits, in order to make the dry grains on the surface of the dry grains can be melted to the greatest extent, it is necessary to accumulate on the brick surface The dry granules with a thickness of 2 to 5 kg / ㎡ can polish the glaze surface in the polishing process. At the same time, it is necessary to spray a layer of protective glaze to fix the dry granule layer after the dry granule frit is applied. The production is more complicated; thicker dry granules The granular layer makes it difficult for the air bubbles generated by the glaze layer and the brick to be quickly discharged, and defects such as air bubbles, pinholes, and concave glazes are prone to occur

(2) Distributing dry granules requires a new set of equipment such as a dry granule distribution machine on the glaze line, which requires a large investment

(3) Due to the high composition of coarse dry grain frit, in order to make the glaze surface as flat as possible, the firing temperature is high and the firing cycle is long, which affects production efficiency

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