Synthesis and characterization of hematite pigment obtained from a steel waste industry

Prim, S.R.; Folgueras, Marilena Valadares; Lima, Michele Alves de; Hotza, Dachamir

doi:10.1016/j.jhazmat.2011.06.034

Cited by 59 publications

(28 citation statements)

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“…3. The thermogram shows that between 80 and 550 • C the iron ore residue undergoes a mass loss of 5.7%, corresponding to an endothermic peak with a maximum at 328 • C, associated with the decomposition of some component of the residue, probably the transformation (dehydration) of goethite into hematite [14,17,19,21], Fig. 3.…”

Section: Thermal Behavior Of the Iron Ore Residue And Glazesmentioning

confidence: 99%

“…The use of processed iron ore containing metal oxides as a pigment tends to lower the cost of a colored glaze because of its low commercial value compared to a glaze colored with an imported red dye, but there is also another reason for its use, to give a correct destination to a residue that is very common in areas of extraction of iron ore [21][22][23][24][25][26][27]. However, in this work the reactions detected by XRD with the glazes upon firing (and responsible for changes in color) have shown that the residue was acting as a dye or colorant and not properly as a stable pigment.…”

Section: Introductionmentioning

confidence: 99%

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Ceramic colorant from untreated iron ore residue

Pereira

Bernardin

2012

Journal of Hazardous Materials

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Section: Thermal Behavior Of the Iron Ore Residue And Glazesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ceramic colorant from untreated iron ore residue

Pereira

Bernardin

2012

Journal of Hazardous Materials

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“…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].…”

Section: Introductionmentioning

confidence: 99%

Kromit Atığının Tek Pişirim Duvar Karosu Sırlarında Renklendirici Olarak Kullanılması

Mirdali¹

2016

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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The present study focuses on the utilization of chromite waste after neutralization process as coloring agent for transparent and opaque wall tile glaze compositions. The neutralized processed chromite ore waste obtained from the Soda-Chrome Industries Inc. in Kazanlı (Mersin), a branch of Şişe-Cam Chemicals Group, was used in increasing amounts in ceramic wall tile glazes. 3-6% of chromite waste was used in opaque and transparent wall tile glaze recipes. The glaze compositions were applied as thin layers (0.5 mm) on engobed wall tile bodies and fired at 1200°C. After firing, no surface defects were observed on glazed surface. Glazes were charaterized by electron microscopy (SEM-EDX). The color obtained after glazing and firing was defined as CIE-L * a * b * parameters by using UV-Visible Spectrophotometer. Glazed samples were subjected to thermal shock test at 200°C and no evidence of crack and peeling were found between body and glaze coating. It has been observed that waste material has positive effects as a colorant in ceramic glazes at 1200°C.

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“…Several different approaches have been used for the valorization of these wastes considering the volumes generated globally, such as the sequestering of carbon dioxide in mineral form, known as mineral carbonation [16][17][18][19][20], and the production of artifacts from cementitious materials [21][22][23][24], pigments [25,26] and glass-ceramics [10,27]. However, there is still a need to increase the technical and economic value of this residue.…”

Section: Introductionmentioning

confidence: 99%