Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing Spinel
<p>In this paper, the effect of nano-Cr<sub>2</sub>O<sub>3</sub> addition on the properties of aluminous cement containing MgAl<sub>2</sub>O<sub>4</sub> spinel was investigated. For this reason, the raw dolomite was used as raw material along wit...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Kaunas University of Technology
2015-03-01
|
| Series: | Medžiagotyra |
| Subjects: | |
| Online Access: | http://matsc.ktu.lt/index.php/MatSc/article/view/5211 |
| _version_ | 1818564036141252608 |
|---|---|
| author | Sasan Otroj |
| author_facet | Sasan Otroj |
| author_sort | Sasan Otroj |
| collection | DOAJ |
| description | <p>In this paper, the effect of nano-Cr<sub>2</sub>O<sub>3</sub> addition on the properties of aluminous cement containing MgAl<sub>2</sub>O<sub>4</sub> spinel was investigated. For this reason, the raw dolomite was used as raw material along with calcined alumina for the preparation of the aluminous cement. Then, the compositions containing different amounts of nano-Cr<sub>2</sub>O<sub>3</sub> particles were fired at 1450 °C and their mineralogical compositions and microstructures were investigated. The setting times of prepared cements were measured after grounding and ball-milling. Besides, the slag resistance of refractory castables containing prepared cements was evaluated. The results showed that nano-Cr<sub>2</sub>O<sub>3</sub> addition has effect on the increasing of spinel and CA<sub>2</sub> and decreasing of CA and C<sub>12</sub>A<sub>7 </sub>phases in the cement composition. The decreasing of C<sub>12</sub>A<sub>7</sub> leads to increasing of setting times of cement. Besides, the slag resistance of refractory castables containing prepared cements is improved due to increasing of spinel and decreasing of C<sub>12</sub>A<sub>7</sub> amount in the cement composition.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.21.1.5211">http://dx.doi.org/10.5755/j01.ms.21.1.5211</a></p> |
| first_indexed | 2024-12-14T01:24:08Z |
| format | Article |
| id | doaj.art-61c80372efc041c0b92f7a481bbe688b |
| institution | Directory Open Access Journal |
| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-12-14T01:24:08Z |
| publishDate | 2015-03-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-61c80372efc041c0b92f7a481bbe688b2022-12-21T23:22:17ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892015-03-0121112913510.5755/j01.ms.21.1.52115163Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing SpinelSasan Otroj0Shahrekord University<p>In this paper, the effect of nano-Cr<sub>2</sub>O<sub>3</sub> addition on the properties of aluminous cement containing MgAl<sub>2</sub>O<sub>4</sub> spinel was investigated. For this reason, the raw dolomite was used as raw material along with calcined alumina for the preparation of the aluminous cement. Then, the compositions containing different amounts of nano-Cr<sub>2</sub>O<sub>3</sub> particles were fired at 1450 °C and their mineralogical compositions and microstructures were investigated. The setting times of prepared cements were measured after grounding and ball-milling. Besides, the slag resistance of refractory castables containing prepared cements was evaluated. The results showed that nano-Cr<sub>2</sub>O<sub>3</sub> addition has effect on the increasing of spinel and CA<sub>2</sub> and decreasing of CA and C<sub>12</sub>A<sub>7 </sub>phases in the cement composition. The decreasing of C<sub>12</sub>A<sub>7</sub> leads to increasing of setting times of cement. Besides, the slag resistance of refractory castables containing prepared cements is improved due to increasing of spinel and decreasing of C<sub>12</sub>A<sub>7</sub> amount in the cement composition.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.21.1.5211">http://dx.doi.org/10.5755/j01.ms.21.1.5211</a></p>http://matsc.ktu.lt/index.php/MatSc/article/view/5211Aluminate cementSpinelNano-Cr2O3propertiesslag resistance |
| spellingShingle | Sasan Otroj Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing Spinel Medžiagotyra Aluminate cement Spinel Nano-Cr2O3 properties slag resistance |
| title | Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing Spinel |
| title_full | Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing Spinel |
| title_fullStr | Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing Spinel |
| title_full_unstemmed | Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing Spinel |
| title_short | Impact of Nano-Cr2O3 Addition on the Properties of Aluminous Cements Containing Spinel |
| title_sort | impact of nano cr2o3 addition on the properties of aluminous cements containing spinel |
| topic | Aluminate cement Spinel Nano-Cr2O3 properties slag resistance |
| url | http://matsc.ktu.lt/index.php/MatSc/article/view/5211 |
| work_keys_str_mv | AT sasanotroj impactofnanocr2o3additiononthepropertiesofaluminouscementscontainingspinel |