Cooperative Preparation of Glass-ceramics by Blast Furnace Slag and Low-carbon Chromium Iron Alloy Slag
This is an article in the field of mineral materials. In order to make high-value utilization and harmless treatment of bulk industrial solid waste, CaO-MgO-Al2O3-SiO2-Cr2O3 system glass-ceramics were prepared by melting method with Baotou Steel blast furnace slag, low-carbon chromium iron alloy sla...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences
2024-12-01
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| Series: | Kuangchan zonghe liyong |
| Subjects: | |
| Online Access: | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2024.06.003 |
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| Summary: | This is an article in the field of mineral materials. In order to make high-value utilization and harmless treatment of bulk industrial solid waste, CaO-MgO-Al2O3-SiO2-Cr2O3 system glass-ceramics were prepared by melting method with Baotou Steel blast furnace slag, low-carbon chromium iron alloy slag and quartz sand as the raw materials. The optimum ratio of raw materials was explored by means of differential thermal analysis (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that when the mass ratio of blast furnace slag, low-carbon chromium iron alloy slag and quartz sand was 60∶40∶31, the crystalline phases of glass-ceramics were diopside and omphacite. At this time, the performance of glass-ceramics was the best, the flexural strength reached 126.25 MPa, the crystallinity reached 89.19%, and the microstructure was ideal. The glass-ceramics prepared under the optimal raw material ratio met the requirements for national class A decoration materials, i.e. IRa≤1.0 and Iγ≤1.3, and the leaching concentration of heavy metal chromium in the glass-ceramics met the national standard, indicating that it is feasible to prepare glass-ceramics with blast furnace slag and low-carbon chromium iron alloy slag. |
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| ISSN: | 1000-6532 |