Production method of ultrathin outer wall full-body brick

Abstract

The invention discloses a production method of an ultrathin outer wall full-body brick, relating to the technical field of architectural ceramics manufacturing. The ultrathin outer wall full-body brick is produced from the following raw materials in percentage by weight: 20% of white mud, 8% of black mud, 6% of high-temperature sand, 40% of low-temperature sand, 8% of talc mud and 18% of broken cushion board. The production method comprises the following steps of: mixing the raw materials, ball-milling the mixture in a ball mill, sieving the slurry, spraying the sieved slurry into powder by using a spray drying tower, and ageing the powder for later use; dry-pressing the powder into a green body with 4.1-4.2 mm in thickness by using a large-tonnage press; and placing the green body on a cushion board through a vacuum absorber, sending the green body placed on the cushion board together with the cushion board into a roller kiln to fire, controlling the firing temperature within the range of 1190 DEG C to 1230 DEG C, and firing the green body for 60 min to obtain the finished product. Compared with the prior art, the breaking strength of the ultrathin outer wall full-body brick is 500 N and meets the requirement that the average breaking strength in the standard Ceramic Thin Brick for Outer Wall is greater than or equal to 350 N.

Description

technical field [0001] The invention relates to the technical field of building ceramics manufacturing, in particular to a method for manufacturing an ultra-thin outer wall full-body brick used for building outer wall decoration. Background technique [0002] People usually refer to ceramic tiles used for exterior walls with a thickness of less than 6 mm as exterior wall tiles. Exterior wall tiles can reduce the load on the wall and improve the safety of construction and use, and are in great demand. Exterior wall tiles are divided into glazed exterior wall tiles and whole exterior wall tiles; there is an ultra-thin exterior wall whole body brick with a water absorption rate below 0.5% and a thickness of 3.8 mm. The production method of this ultra-thin exterior wall whole body brick is The generally used ceramic brick powder for exterior walls is pressed into a green body by a large-tonnage press, and then transported to a roller kiln for firing through a large chain. The p...

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Problems solved by technology

The production method of this ultra-thin exterior wall full-body brick has the following deficiencies in production: 1. The high-quality product rate is low. The large conveying chain is sent to the roller kiln for firing; the large conveying chain is likely to cause defects such as collision and breakage of the green body during the conveying process, resulting in a low rate of high-quality products fired; 2. The destructive strength of this kind of ultra-thin exterior wall whole-body brick is 330 N, which does not reach the standard of the average destructive strength of "Ceramic Thin Bricks for External Walls" greater than or equal to 350 N; The production method of 3.8 mm ceramic thin bricks for external walls has been tested a lot, but no suitable raw material formula and matching production method for 3.8 mm ceramic thin bricks have been found so far.

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