The Role of Quartz in Building Ceramic Products

1. Quartz is an important barren raw material in the tiles, and its introduction can reduce the drying shrinkage and deformation defects of the product body, which can help to speed up the drying process and save the process time.

2, quartz at high temperature occurs when the polycrystalline transformation and volume expansion, can partially reduce the shrinkage of the green body generated when the heat shrinkage due to excessive shrinkage caused by stress, thereby improving the product firing performance.

3. Quartz in the process of firing, part of the dissolved in feldspar glass, you can improve the viscosity of the glass, the excess quartz is the body of the skeleton. This not only allows the body to have the ability to resist deformation at high temperatures, but also to increase the physical strength of the product.

As clinker raw material clinker

Clinker Department will be part of the natural mineral raw materials in advance high-temperature calcination, to reduce shrinkage, increase strength, part of its physical and chemical properties, improve and improve process performance. Such as kaolin series of raw materials through high temperature calcination can produce mullite crystal; talc raw materials can be calcined to form cordierite crystal material; part of the clay raw material calcined mature material due to excessive organic impurities in the firing process to remove a large number of gases, eliminating the And thus effectively ensure the speed of the new low-temperature fast firing process, to improve product quality and firing efficiency is of great significance. Clay raw materials, after the processing of mature materials, the internal and containing crystal water and organic matter is excluded from the loss of plasticity and volume shrinkage occurred in the formula calculation, the chemical composition of the equivalent of the original composition from the removal of the reduction.

Now many ceramic enterprises to take the tiles after the burned, and then add a certain proportion of the blank, the same can be achieved barren effect. This method does not affect the chemical composition of products, but also an economic and reasonable method. However, the amount of its application should be based on the specific circumstances of the enterprise process, must take into account the proportion of waste billet and blank to plastic requirements. In the production of glazed tiles business, scrap on the glaze due to liquid special chemical composition will lead to soft body sintering performance is unstable, it is necessary to pay attention to the ingredients. At present, the introduction of raw materials in the tiles can be controlled in the range of 5% -15%. In short, barren raw materials in the tile production process occupies a very important position, can not be taken seriously.

Foreign clinker research status At present, some of the ceramic enterprises in Europe and Japan for environmental protection and conservation of the Earth's quality raw materials for the purpose of the geological materials have been fully developed and the use of urban waste, the comprehensive utilization of construction waste into the ceramic products production, Many of these poor raw materials and waste after high temperature calcination, organic matter and harmful impurities can be used after the exclusion of clinker, and then as barren material added to the blank formula. At present, with the rapid increase in the technological content of high-temperature firing technology, the firing temperature is greatly reduced, so the range of optional raw materials is widening. Developed countries in this context is to speed up the development of new barren raw materials, the pace of development and use, and achieved greater results.