Study of the High-temperature Synthesis of MgAl 2 O 4 Spinel Refractory Raw Materials from Chromium Slag
To make use of chromium slag waste, this study examined the technology of the preparation of MgAl 2 O 4 spinel refractory raw material by using chromium slag. The results showed that (1) using the traditional sintering process of synthetic spinel, the highest volume density was 3.14 g/cm3 and the lo...
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| Veröffentlicht in: | High temperature materials and processes 2018-06, Vol.37 (6), p.581 |
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| creator | Meng, Jinxia Chen, Weiqing Zhao, Jizeng Liu, Li |
| description | To make use of chromium slag waste, this study examined the technology of the preparation of MgAl 2 O 4 spinel refractory raw material by using chromium slag. The results showed that (1) using the traditional sintering process of synthetic spinel, the highest volume density was 3.14 g/cm3 and the lowest porosity rate was 9.16 %. With the increase of the proportion of MgO powder mixing, bulk density and porosity fluctuations, and which cannot meet the requirements of refractory raw materials. (2) For MgAl 2 O 4 spinel prepared by the electric-melting process, the highest volume density was 3.27 g/cm3 and the lowest porosity rate was 8.78 %. Volume density and the porosity remained stable, and they are affected by MgO powder thus the blending ratio is very small, which can satisfy the requirements of refractory raw materials. (3) MgAl 2 O 4 spinel prepared by the electric-melting method is superior to traditional MgAl 2 O 4 spinel in terms of slag resistance and thermal shock resistance. |
| doi_str_mv | 10.1515/htmp-2016-0254 |
| format | Article |
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The results showed that (1) using the traditional sintering process of synthetic spinel, the highest volume density was 3.14 g/cm3 and the lowest porosity rate was 9.16 %. With the increase of the proportion of MgO powder mixing, bulk density and porosity fluctuations, and which cannot meet the requirements of refractory raw materials. (2) For MgAl 2 O 4 spinel prepared by the electric-melting process, the highest volume density was 3.27 g/cm3 and the lowest porosity rate was 8.78 %. Volume density and the porosity remained stable, and they are affected by MgO powder thus the blending ratio is very small, which can satisfy the requirements of refractory raw materials. (3) MgAl 2 O 4 spinel prepared by the electric-melting method is superior to traditional MgAl 2 O 4 spinel in terms of slag resistance and thermal shock resistance.</description><identifier>ISSN: 0334-6455</identifier><identifier>EISSN: 2191-0324</identifier><identifier>DOI: 10.1515/htmp-2016-0254</identifier><language>eng</language><publisher>Berlin: Walter de Gruyter GmbH</publisher><subject>Bulk density ; Ceramics industry ; Chromium ; Magnesium oxide ; Porosity ; Raw materials ; Shock resistance ; Sintering (powder metallurgy) ; Spinel ; Thermal resistance ; Thermal shock ; Variations</subject><ispartof>High temperature materials and processes, 2018-06, Vol.37 (6), p.581</ispartof><rights>Copyright Walter de Gruyter GmbH Jun 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Meng, Jinxia</creatorcontrib><creatorcontrib>Chen, Weiqing</creatorcontrib><creatorcontrib>Zhao, Jizeng</creatorcontrib><creatorcontrib>Liu, Li</creatorcontrib><title>Study of the High-temperature Synthesis of MgAl 2 O 4 Spinel Refractory Raw Materials from Chromium Slag</title><title>High temperature materials and processes</title><description>To make use of chromium slag waste, this study examined the technology of the preparation of MgAl 2 O 4 spinel refractory raw material by using chromium slag. The results showed that (1) using the traditional sintering process of synthetic spinel, the highest volume density was 3.14 g/cm3 and the lowest porosity rate was 9.16 %. With the increase of the proportion of MgO powder mixing, bulk density and porosity fluctuations, and which cannot meet the requirements of refractory raw materials. (2) For MgAl 2 O 4 spinel prepared by the electric-melting process, the highest volume density was 3.27 g/cm3 and the lowest porosity rate was 8.78 %. Volume density and the porosity remained stable, and they are affected by MgO powder thus the blending ratio is very small, which can satisfy the requirements of refractory raw materials. 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The results showed that (1) using the traditional sintering process of synthetic spinel, the highest volume density was 3.14 g/cm3 and the lowest porosity rate was 9.16 %. With the increase of the proportion of MgO powder mixing, bulk density and porosity fluctuations, and which cannot meet the requirements of refractory raw materials. (2) For MgAl 2 O 4 spinel prepared by the electric-melting process, the highest volume density was 3.27 g/cm3 and the lowest porosity rate was 8.78 %. Volume density and the porosity remained stable, and they are affected by MgO powder thus the blending ratio is very small, which can satisfy the requirements of refractory raw materials. (3) MgAl 2 O 4 spinel prepared by the electric-melting method is superior to traditional MgAl 2 O 4 spinel in terms of slag resistance and thermal shock resistance.</abstract><cop>Berlin</cop><pub>Walter de Gruyter GmbH</pub><doi>10.1515/htmp-2016-0254</doi></addata></record> |
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| ispartof | High temperature materials and processes, 2018-06, Vol.37 (6), p.581 |
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| source | De Gruyter Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Bulk density Ceramics industry Chromium Magnesium oxide Porosity Raw materials Shock resistance Sintering (powder metallurgy) Spinel Thermal resistance Thermal shock Variations |
| title | Study of the High-temperature Synthesis of MgAl 2 O 4 Spinel Refractory Raw Materials from Chromium Slag |
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