raimundo Jorge Santos Paranhos

This study evaluated the potential use of Sugarcane Bagasse Ashes (SBA) as a flux, replacing phyllite for the production of enamelled porcelain tile. The raw materials of the standard mass components and the SBA residue were characterized by testing by XRF, XRD, AG, DTA and TGA. Test samples were fabricated, assembled in lots of 3 units and sintered at temperatures of 1150 ° C to 1210 ° C. The results of the physical properties, mechanical properties and SEM of the sintered samples, showed that the formulation, G4 - in which applied 10% of SBA replacing phyllite, sintering temperature 1210 ° C showed better performance as the previously mentioned properties due to the formation of mullite crystals, meeting the prerequisites of standards for enamelled porcelain tile, while reducing the environmental impact and the cost of production.

O presente estudo tem como objetivo avaliar a potencialidade da utilizacao das cinzas do bagaco da cana-de-acucar (CBC) como fundente, em substituicao ao filito e/ou ao feldspato na massa padrao para producao industrial de porcelanato esmaltado, verificando a possibilidade de as CBC contribuirem para a reducao do coeficiente de expansao termica global da massa cerâmica. Para isso, como um resultado da pesquisa, foram caracterizadas as materias-primas componentes da massa padrao (argila, filito, caulim, feldspato, quartzo e talco) e o residuo das CBC, por meio de ensaios por FRX, DRX, AG, ATD e ATG. Foram confeccionados corpos de prova (CDP) nas dimensoes de 100 mm x 50 mm x 8 mm em matriz uniaxial, sob pressao de compactacao de 33 MPa, reunidos em lotes de 3 unidades, posteriormente sinterizados nas temperaturas de 1150 oC a 1210 oC variando a escala de avaliacao em 10 oC, rampa de aquecimento e resfriamento de 50 oC/min e 25 oC/min, com tempo de patamares de 1 min, 3 min, 5 min, 8 ...

This study aimed to investigate the use of cane sugar ashes from small-scale stills of Eunápolis region, state of Bahia, in pottery mass that can be developed as porcelain stoneware. Bahia is the second largest producer of rum distillery in Brazil. In the production of rum is produced residue called bagasse, which is used to generate electricity in power plants and in the distillery itself, generating ashes as residue, which is played in nature, causing environmental damage. We studied 5 (five) formulations of 0% 10% 20%, 30% and 40% by weight of the ash, without ignition and 3 (three) formulations of 10%, 20% and 30% with gray ash temperature of 1250oC. The formulation at 0% by weight of ash was used for a comparison between the traditional mass of porcelain stoneware and the masses with the addition of ash calcined, replacing feldspar. The percentage by weight of kaolin and of clay was kept the same, 30%, and all raw materials were derived from the state of Bahia. The samples were...

A alta resistência a corrosão dos aços inoxidáveis lhes permitiram obter um espaço significativo nasindústrias de modo geral, principalmente, nas químicas e petroquímicas. Estes materiais apesar deapresentarem uma elevada resistência a ambientes corrosivos, podem ...