Production process of dry-pressed ceramic tile body

Abstract

The invention discloses a production process of a dry-pressed ceramic brick body, which comprises the following steps: S1, stockpiling and homogenizing materials; S2, batching; S3, grinding; S4, storing and homogenizing; S5, removing impurities and removing Iron; S6, granulation; S7, storage of granules; S8, pressing granules into green bodies; S9, drying of green bodies. According to the production process of the above-mentioned dry-pressed ceramic brick body, the moisture inside and outside the pellets after granulation by the dry powder milling process is uniform, which saves the process that the traditional wet granulation pellets need to be stale to achieve uniform moisture inside and outside; at the same time Through homogenization in the factory, dry powder storage homogenization and weight component detection and feedback, it solves the problem of homogenization of various ceramic raw materials in China and ensures the balance and stability of raw materials in subsequent production links; After flow nucleation, it is granulated by multi-stage granulation discs, which improves the sphericity and fluidity of the dry granulation pellets, and reduces the problem of reduced output caused by potential poor flow in the subsequent compaction process.

Description

technical field [0001] The invention relates to a ceramic tile production technology, in particular to a production process of a dry-pressed ceramic tile body. Background technique [0002] Ceramic tiles are thin-plate products made of clay and other inorganic non-metallic materials used to cover walls and floors. Ceramic tiles are formed by extrusion or dry pressing raw materials at room temperature, and extrusion molding generally adopts wet powder making process , dry pressing generally adopts dry powder making process; [0003] Among them, the raw material milling equipment of the wet milling process adopts the intermittent or continuous wet ball milling method. After grinding, the water content of the slurry reaches about 35%, and the ground slurry is dried and granulated by a spray drying tower. After granulation, the water content of the pellets is 5% to 7%, and then the pellets enter the aging warehouse for 24 to 36 hours, and then enter the molding machine to press...

AI Technical Summary

Problems solved by technology

[0008] 1) It is difficult to homogenize various raw materials. There are only 2 to 3 kinds of raw materials abroad, but there are more than ten kinds of raw materials in China, and the composition of raw materials is extremely unstable, so the requirements for the stability of the formula are very high;

[0009] 2) It is difficult to guarantee the accuracy of continuous measurement and batching of as many as a dozen raw materials in dry production;

[0010] 3) There is a lack of systematic process research, only research on granulation equipment for dry powder milling, without iron removal, impurity removal, press feeding, and press abrasives caused by changes in grinding process and granulation process , press system, green body drying and other series of links to study;

[0011] 4) Mechanical stirring and high-speed granulation method, the hardness of the pellets is uneven, resulting in inconsistent density of the green body after pressing, especially when producing floor tiles (porcelain tiles, stoneware tiles) with a relatively high degree of vitrification, resulting in subsequent Defects are more obvious, and the rate of industrial excellence and wet production has been reduced too much, causing the overall cost to rise instead of falling;

[0012] 5) The pellets prepared by the suspended aggregate method ceramsite equipment have uniform hardness, but poor sphericity, and the fluidity is reduced by more than 30%. After storage, the pulverization is serious, and the fluidity is further reduced, which seriously affects the output of the press.

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