After four days of intense activities and enriching interventions potters, the 6th Congress of the Ceramic Coating Industry was closed entitled to record number of viewing public. In the auditorium 2, the six lectures that took place on Friday morning, 19 were responsible for attracting potters of several companies in the production hub and all the chairs were occupied.
For the curator of the event, Prof. Dr. Anselmo Boschi, who was present during every day this was a moment of extreme importance in the history of past congresses. As highlighted at the end, “there was a significant increase in the technical level of the lectures given, which directly contributes to the improvement and updating of knowledge.”
On the last day, the subjects were specifically related to the field of activity of the participants, with lectures dealing with Porcelain and Raw Materials. In the latter, one of the identified concerns were the issue of exhaustion of clay reserves. “If even 10 years ago there were big deposits, you need to think about a future seeking quality, from the middle of the clay processing,” said Mining Engineer, Tomaz Teodoro da Cruz.
Other way, pointed out by Sérgio Ricardo Christofoletti, the Forestry Institute – linked to the Secretariat of the State of São Paulo State – is the search for new deposits. A study was conducted to analyze the characteristics of clays in the municipalities of Porto Ferreira, Santa Rosa of Viterbo and Tambaú. “In Santa Rosa, for example, there mine with thin, purple and massive material, very similar to this region,” said Christofoletti about quality.
Process optimization and product
Over the years, new technologies have proposed viable production processes, however there are some paradigms to be demystified and may, in addition to making the quickest production, reduce costs. The milling system, for example, follows some standards, such as the use of large diameter balls. “More and more is required that the particles are thinner and the mill is the heart of the process, so you need to think about alternatives,” said Renata Roberti, the company Netzsch.
The camera starts to use microspheres by mechanical action, and the contacts tend to increase in friction, resulting in smaller grains and thinner material. “The final particle size is one-thousandth the size of the milling balls,” said Renata. With faster process, the potter can observe other properties that affect the quality of the final product.
The pyroplastic deformation is academic work Theme Ceramic Coatings Laboratory of UFSCar, which saves Lisandra is one of the authors. “With this irregularity, the product loses the original format and this is due, in particular the characteristics of the porous structure that will accommodate the liquid phase, in addition to the volume and nature of such a phase,” said Lisandra.
“Knowing the problems and the reasons for the deformation, it is possible to find chemical elements needed to reverse the process,” he said. Besides this information, others will be released in the next issue of the institutional magazine ASPACER stay tuned.