Gas release during clay firing and evolution of ceramic properties

Acid gas emissions from structural clay products containing secondary resources: foundry sand dust and Waelz slag

“…Increasingly restrictive environmental regulations have forced the ceramics industry to examine their environmental impact and several authors have reported the emissions produced during manufacturing various types of ceramics. Previous research has investigated the effect on emissions of raw material composition (García-Ten et al, 2006) and firing conditions (Toledo et al, 2004;Monfort et al, 2008). Emissions from the ceramics industry have been reduced using gas cleaning systems (Monfort et al, 2010a), coatings (García-ten et al, 2011) and the addition of other compounds to ceramics such as calcite (Monfort et al, 2010b).…”

Avaliação de gases poluentes oriundos da queima de argila com adição de escória de aciaria

“…A diferença de pressão é convertida pelo diafragma capacitivo em um sinal elétrico, que está conectado 'a entrada de um amplificador comparador que possui em sua entrada o sinal de referência. A diferença entre os dois sinais é a medida de concentração do gás sob investigação [17].…”

Contribution of analytical techniques to determine the technologies used in the ceramic materials from the Former Workers Hospital of Maudes, Madrid (Spain)

“…Small amounts of CH 4 and NO x and, to a lesser extent, CO and CO 2 , may be released during firing [42]. On occasion, expelling in the kiln the gases housed in the ceramic pastes imbues the material with a spongy texture [43].…”