Iraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties
Abstract Locally natural occurring Iraqi rocks of Bauxite and Porcelanite (after pre calcinations at 1000oC for 1hr) were used, with the addition of different proportions of MgO and Al2O3, to prepare refractory materials. The effects of these additives on the physical and thermal properties of...
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Al-Khwarizmi College of Engineering – University of Baghdad
2017
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oai:doaj.org-article:6416bbdb99a34bfa8600bf7481a45f472021-12-02T07:16:40ZIraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties10.22153/kej.2017.01.0041818-11712312-0789https://doaj.org/article/6416bbdb99a34bfa8600bf7481a45f472017-12-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/351https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 Abstract Locally natural occurring Iraqi rocks of Bauxite and Porcelanite (after pre calcinations at 1000oC for 1hr) were used, with the addition of different proportions of MgO and Al2O3, to prepare refractory materials. The effects of these additives on the physical and thermal properties of the prepared refractories were investigated. Many batches of Bauxite/MgO, Bauxite/Al2O3, Bauxite/MgO/Al2O3, and Porcelanite/ MgO/Al2O3 were prepared. The mixture is milled and classified into different size fractions; fine (less than 45μm) 40%, middle (45-75μm) 40%, and coarse (75-106μm) 20% . X-ray diffraction technique was used to identify the structure of Bauxite and Porcelanite rocks. The samples were formed by semi dry pressing with the addition of few drops of water as a binder. These samples were sintered at 1100oC for 2hrs. Physical properties (linear shrinkage, density and porosity), and the thermal properties (thermal conductivity, diffusivity and specific heat) were measured for all the prepared samples. The results show the increasing of density is susceptible to the thermal properties, and also the addition of Al2O3 and MgO to the natural rocks have a limited effect, and the values of the parameters above for the natural rocks, were in the levels to be used as a refractory material for lining a metal fusion furnaces and other applications. Keywords: Bauxite, Refractory brick, Porcelanite Stone, Physical properties, Thermal properties. Amel S. MerzahAl-Khwarizmi College of Engineering – University of BaghdadarticleBauxite, Refractory brick, Porcelanite Stone, Physical properties, Thermal properties.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 13, Iss 2 (2017) |
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DOAJ |
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DOAJ |
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EN |
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Bauxite, Refractory brick, Porcelanite Stone, Physical properties, Thermal properties. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 |
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Bauxite, Refractory brick, Porcelanite Stone, Physical properties, Thermal properties. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Amel S. Merzah Iraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties |
| description |
Abstract
Locally natural occurring Iraqi rocks of Bauxite and Porcelanite (after pre calcinations at 1000oC for 1hr) were used, with the addition of different proportions of MgO and Al2O3, to prepare refractory materials. The effects of these additives on the physical and thermal properties of the prepared refractories were investigated.
Many batches of Bauxite/MgO, Bauxite/Al2O3, Bauxite/MgO/Al2O3, and Porcelanite/ MgO/Al2O3 were prepared. The mixture is milled and classified into different size fractions; fine (less than 45μm) 40%, middle (45-75μm) 40%, and coarse (75-106μm) 20% .
X-ray diffraction technique was used to identify the structure of Bauxite and Porcelanite rocks. The samples were formed by semi dry pressing with the addition of few drops of water as a binder. These samples were sintered at 1100oC for 2hrs. Physical properties (linear shrinkage, density and porosity), and the thermal properties (thermal conductivity, diffusivity and specific heat) were measured for all the prepared samples.
The results show the increasing of density is susceptible to the thermal properties, and also the addition of Al2O3 and MgO to the natural rocks have a limited effect, and the values of the parameters above for the natural rocks, were in the levels to be used as a refractory material for lining a metal fusion furnaces and other applications.
Keywords: Bauxite, Refractory brick, Porcelanite Stone, Physical properties, Thermal properties.
|
| format |
article |
| author |
Amel S. Merzah |
| author_facet |
Amel S. Merzah |
| author_sort |
Amel S. Merzah |
| title |
Iraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties |
| title_short |
Iraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties |
| title_full |
Iraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties |
| title_fullStr |
Iraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties |
| title_full_unstemmed |
Iraqi Bauxite and Porcalinite Rocks Based Refractory, Preparation and Studying Properties |
| title_sort |
iraqi bauxite and porcalinite rocks based refractory, preparation and studying properties |
| publisher |
Al-Khwarizmi College of Engineering – University of Baghdad |
| publishDate |
2017 |
| url |
https://doaj.org/article/6416bbdb99a34bfa8600bf7481a45f47 |
| work_keys_str_mv |
AT amelsmerzah iraqibauxiteandporcaliniterocksbasedrefractorypreparationandstudyingproperties |
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