Ceramic colorant from untreated iron ore residue

Synthesis and characterization of pigments of the LaAl1−xFexO3 system – Application in ceramic and polymer

“…The LaAl 1-x Fe x O 3 The resulting powders were dispersed in agate mortar and submitted to thermal treatment at 500 °C for 150 minutes to remove residual organic matter. Finally, the powders obtained after the second thermal treatment were thermally treated at 910 °C for 240 minutes, with a 5 °C min -1 heating rate so that the solid state reaction could occur and the relevant pigments be obtained.…”

“…The pigment LA, whose composition is LaAlO 3 The colorimetric coordinates revealed that the pigment color changes from white (LA) to greenish-yellow (LAF1 to LAF5; a* < 0 e b* > 0). From the sample LAF6 on, however, it was possible to see simultaneous increase in the coordinate values a* and b*…”

“…Therefore, they must present intense color, opacity, insolubility to the application medium and also be thermally stable [3,4]. Regarding pigments for polymeric material, the main characteristics required are insolubility, high polymer dispersion (the ideal particle size varies from 0.2 to 1.0 µm), intense color, and high coloring ability [5][6][7][8].…”

“…In addition, inorganic pigments present higher stability when in contact M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 with chemical products and lower migration effect, inorganic pigments are used in substitution to organic pigments [6,8,9]. However, in order for the inorganic pigments to be used to color polymers, they must show compatibility, so that the presence of superficial deformity or alteration in their mechanical properties can be prevented [6,10].…”

Kromit Atığının Tek Pişirim Duvar Karosu Sırlarında Renklendirici Olarak Kullanılması

“…As stated in the literature, possibility of using a wide variety of inorganic wastes has become important aspect in the ceramic sector like as ceramic engobes [2][3], ceramic glazes [4][5][6][7][8], ceramic colorants or pigments [9][10][11][12][13][14][15], glass and glass-ceramics [16][17][18], bricks and roof tiles [19][20][21][22][23][24][25][26][27], and ceramic tiles [28][29][30].…”