Production process of dry-press molding ceramic green brick body

Abstract

The invention discloses a production process of a dry-press molding ceramic green brick body. The production process comprises the following steps of S1, storing and homogenizing feedstock; S2, preparing the materials; S3, grinding; S4, storing and homogenizing; S5, removing impurities and removing iron; S6, granulating; S7, storing material particles; S8, pressing the material particles into thegreen body; and S9, drying the green body. According to the production process of the dry-pressing molding ceramic green brick body, particle materials prepared by the dry-pressing process granulationprocess are uniform in inner and outer moisture, so that the process that traditional wet-process granulation granules need to be aged to achieve uniform internal and external water can be saved; andmeanwhile, by feeding and homogenizing, dry powder storage and homogenization, weight component detection and feedback, the problem of homogenization of various kinds of ceramic raw materials in China is solved, and the balance and stability of the raw materials in the follow-up production link are ensured; and the cross-flow granulation machine is adopted to realize double-fluid cross-flow granulation, and then the double-fluid cross-flow granulation is carried out through a multi-stage granulation disc, the spherical degree and the fluidity of the dry granulation granular materials are improved, and the problem that the yield is reduced due to the fact that the potential flow of the subsequent blank pressing link is unsmooth is solved.

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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