Manuel Joaquim Peixoto Marques Ribeiro

Publications

Patents

Ceramic pigments based on industrial waste

Products National

Batista, João; Ribeiro, Manuel; Costa, Maria

The present invention relates to the synthesis of ceramic pigments by solid state reaction from industrial residues: sludges from wastewater treatment plants (WWTP) of metallic surface treatment industries (eg.: anodizing, galvanizing processes), blasting steel grits used in the shipping industry, smelting sands and wastes from cutting ...

Inorganic pigments based on hibonite structure, synthesis and usages

Materials National

Batista, João; Ribeiro, Manuel; Costa, Maria;

The present invention relates to a blue inorganic pigment which is based on the structure of hibonite consisting of a calcium hexaluminate, with the simplified formula CaAl12O19. The synthesis of hibonite structure with chromophore ions incorporated in the crystal net (eg. Ni), by solid state reaction, partially replacing Al3+ cations, ...

Production of extruded ceramic floor tiles fully based on wastes

Processes National

Batista, João; Ribeiro, Manuel; Boia, Cristina

The present invention relates to obtaining a recycled ceramic formulation to produce extruded floor/coating by combining ceramic sludges, glass cullet and aluminum anodizing sludges. Careful separation process of impurities and of treating glass and anodizing wastes, and use of ceramic sludges properly handled and re...

Production of Mixed-Metal-Oxide Inorganic Pigments from Industrial Wastes such as Slimes from Metal Winning and Processing

Products InternationalNational

Batista, João; Peixoto, Manuel; Cordeiro, Maria

The invention relates to the production of mixed-metal-oxide black inorganic pigments cobalt-free, using industrial waste as raw materials such as a galvanizing sludge from Cr/Ni plating and Fe2O3-based sludge generated from steel wiredrawing. The industrial wastes were collected, analysed, treated and the formulation were prepared by t...

Turquoise ceramic pigment free of cobalt, vanadium and zirconium containing chromium/nickel plating sludge

Products National

Batista, João; Ribeiro, Manuel; Costa, Maria; Trindade, Tito;

The present invention relates to the synthesis, by solid state reaction, of a turquoise ceramic pigment, free of cobalt, vanadium and zirconium. This pigment comprises calcium oxide, silica, alumina, tin oxide and nickel oxide, being this the chromophore component. One of the formulations uses sludge from wastewater treatmen...

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