Preparation method of ceramic water-permeable brick suitable for low-temperature fast firing

Abstract

The invention discloses a preparation method of a low-cost ceramic water-permeable brick suitable for low-temperature fast firing. The preparation method includes the steps that (1), after waste glassis subjected to batching, breaking, mixing and ball-milling, a uniform powder mixture is obtained, a small amount of dextrin powder, water and clay are used in assistance, prilling is carried out, and obtained materials serve as a binding agent of the water-permeable brick; (2), architectural ceramic and domestic ceramic waste and waste residues are broken to a certain granularity, and the obtained materials serve as aggregate of the water-permeable brick; (3), sodium silicate water glass is prepared to a certain concentration, then the sodium silicate water glass and the aggregate are fullymixed according to a certain proportion, and sodium silicate water glass coated aggregate is obtained; (4), after the prilled binding agent and the coated aggregate are batched according to a certainproportion, mixed and prilled, distributing-forming and sintering are carried out, finally, surface finishing is carried out, and the ceramic water-permeable brick is obtained. The surface hole diameter and porosity of the water-permeable brick are small, but the internal hole diameter and porosity of the water-permeable brick are large, the situation that surface pores are blocked is greatly reduced, and it is guaranteed that the water-permeable brick can continuously keep a high permeability rate.

Description

technical field [0001] The invention relates to the technical field of building ceramics, in particular to a method for preparing ceramic permeable bricks suitable for low-temperature fast firing. Background technique [0002] China is a big country of ceramics, and the output of both building ceramics and daily-use ceramics ranks first in the world. In the production process of ceramics, a large amount of waste porcelain and waste slag will inevitably be produced due to problems such as raw materials or technology. Since such waste is a product that has been sintered at high temperature, it is difficult to decompose in nature, and it is also difficult to regenerate as industrial raw materials. As a result, a large amount of waste ceramics are transported to landfills as ordinary garbage, which not only wastes a large amount of valuable inorganic non-metallic raw materials, but also wastes a lot of landfill space. What is even more sad is that many manufacturers randomly di...

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Problems solved by technology

Professor Jiang Weihui proposed to use waste ceramic tiles to make permeable bricks (patent number CN201410061365.5), which provides a new idea for improving the utilization rate of waste ceramics, but most of the ingredients in this patent are fly ash, and the amount of waste ceramics used is relatively Limited, and the formula and process are relatively complicated

Wang Yahong's permeable brick made of waste ceramics (patent number: CN201610247511.2) is feasible, but the method requires the use of a large amount of mineral raw materials as a binder, which not only increases the demand for clay minerals, but also requires a firing temperature of 1200°C Above, the high-temperature firing time is close to 2 hours, not only the production efficiency is relatively low, but also the energy consumption is large

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