Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-temperature-resistant ceramsite
The invention relates to the technical field of ceramsite production, in particular to a preparation method of high-temperature-resistant ceramsite, which comprises the following steps: (1) adding bauxite into fired ash for ball milling to obtain a mixture A; (2) adding refractory cement and water into the mixture A, uniformly stirring to obtain ceramsite cores, and granulating to obtain primary ceramsite; (3) curing, drying and screening the primary ceramsite; and (4) carrying out two-stage low-temperature firing on the screened primary ceramsite, specifically, the primary ceramsite is fired at 120-130 DEG C for 1.5-2 h in the first stage of firing, and the primary ceramsite is fired at 680-750 DEG C for 2-3 h in the second stage of firing. According to the ceramsite disclosed by the invention, the refractory cement is added, so that the ceramsite obtains enough strength, does not become a ceramic structure, also has enough strength and can be used for casting, combustible substances in the ceramsite are removed through low-temperature firing, and the high-temperature-resistant ceramsite can be obtained without high-temperature firing; the ceramsite prepared by the method is high in cylinder compressive strength and refractoriness, low in energy consumption and more suitable for heat-resistant sand, and can be reused for casting after being regenerated by a hot method.
本发明涉及陶粒生产技术领域，尤其涉及一种耐高温陶粒的制备方法，包括以下步骤：(1)向烧制灰中加入铝矾土进行球磨，得到混合物A；(2)将耐火水泥和水加入到混合物A中，搅拌均匀，得到陶粒核，进行造粒后，得到初陶粒；(3)对初陶粒进行养护、烘干、筛分处理；(4)对筛分后的初陶粒进行两段低温烧制，一段烧制为在120‑130℃下烧制1.5‑2h，二段烧制为在680‑750℃下烧制2‑3h。本发明陶粒通过加入耐火水泥使陶粒获得足够的强度，不成为陶瓷结构也具有足够的强度能够铸造使用，再通过低温烧制去除陶粒内的可燃物质，无需经过高温烧制即可获得耐高温陶粒；此法制备的陶粒筒压强度和耐火度高，且能耗低，更适宜耐热砂，经过热法再生可再次用于铸造使用。
Preparation method of high-temperature-resistant ceramsite
The invention relates to the technical field of ceramsite production, in particular to a preparation method of high-temperature-resistant ceramsite, which comprises the following steps: (1) adding bauxite into fired ash for ball milling to obtain a mixture A; (2) adding refractory cement and water into the mixture A, uniformly stirring to obtain ceramsite cores, and granulating to obtain primary ceramsite; (3) curing, drying and screening the primary ceramsite; and (4) carrying out two-stage low-temperature firing on the screened primary ceramsite, specifically, the primary ceramsite is fired at 120-130 DEG C for 1.5-2 h in the first stage of firing, and the primary ceramsite is fired at 680-750 DEG C for 2-3 h in the second stage of firing. According to the ceramsite disclosed by the invention, the refractory cement is added, so that the ceramsite obtains enough strength, does not become a ceramic structure, also has enough strength and can be used for casting, combustible substances in the ceramsite are removed through low-temperature firing, and the high-temperature-resistant ceramsite can be obtained without high-temperature firing; the ceramsite prepared by the method is high in cylinder compressive strength and refractoriness, low in energy consumption and more suitable for heat-resistant sand, and can be reused for casting after being regenerated by a hot method.
本发明涉及陶粒生产技术领域，尤其涉及一种耐高温陶粒的制备方法，包括以下步骤：(1)向烧制灰中加入铝矾土进行球磨，得到混合物A；(2)将耐火水泥和水加入到混合物A中，搅拌均匀，得到陶粒核，进行造粒后，得到初陶粒；(3)对初陶粒进行养护、烘干、筛分处理；(4)对筛分后的初陶粒进行两段低温烧制，一段烧制为在120‑130℃下烧制1.5‑2h，二段烧制为在680‑750℃下烧制2‑3h。本发明陶粒通过加入耐火水泥使陶粒获得足够的强度，不成为陶瓷结构也具有足够的强度能够铸造使用，再通过低温烧制去除陶粒内的可燃物质，无需经过高温烧制即可获得耐高温陶粒；此法制备的陶粒筒压强度和耐火度高，且能耗低，更适宜耐热砂，经过热法再生可再次用于铸造使用。
Preparation method of high-temperature-resistant ceramsite
一种耐高温陶粒的制备方法
HU SHENGLI (Autor:in) / WU WUCAN (Autor:in) / REN WENHU (Autor:in)
16.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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