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Process for producing high-strength alpha gypsum powder by using waste ceramic gypsum mold
The invention belongs to the field of waste gypsum recovery, and particularly relates to a process for producing high-strength alpha gypsum powder by using a waste ceramic gypsum mold, which specifically comprises the following steps: crushing, grinding and screening the recovered waste ceramic gypsum mold to remove impurities, adding water to prepare slurry with a certain concentration, and then respectively carrying out primary crystal transformation and secondary crystal transformation to obtain the high-strength alpha gypsum powder. Yttrium oxide is adopted as a crystal modifier in secondary crystal transformation, so that the growth speed of alpha-gypsum crystals in the gypsum slurry can be increased, the generated alpha-gypsum crystals can be stabilized, crystal form transformation of the alpha-gypsum crystals cannot occur after dehydration and cooling, and the high-strength alpha-gypsum powder is obtained. And thus, 99.5% of alpha-semi-hydrated gypsum is formed, and industrial production is realized.
本发明属于废弃石膏回收领域，具体涉及一种利用废弃陶瓷石膏模生产高强度α石膏粉的工艺，具体包括以下步骤：将回收的废弃陶瓷石膏模经过破碎、粉磨、筛分去除杂物后，加水制成一定浓度的料浆，然后分别进行一次转晶与二次转晶，再对转晶后的料浆进行离心分离、干燥制得高强度α石膏粉，其中，二次转晶中采用氧化钇作为转晶剂，可以促进石膏料浆中α‑石膏晶体的成长速度，且可以稳定生成的α‑石膏晶体，使其不会在脱水降温后发生晶型的转化，以形成99.5%的α‑半水石膏，实现产业化生产。
Process for producing high-strength alpha gypsum powder by using waste ceramic gypsum mold
The invention belongs to the field of waste gypsum recovery, and particularly relates to a process for producing high-strength alpha gypsum powder by using a waste ceramic gypsum mold, which specifically comprises the following steps: crushing, grinding and screening the recovered waste ceramic gypsum mold to remove impurities, adding water to prepare slurry with a certain concentration, and then respectively carrying out primary crystal transformation and secondary crystal transformation to obtain the high-strength alpha gypsum powder. Yttrium oxide is adopted as a crystal modifier in secondary crystal transformation, so that the growth speed of alpha-gypsum crystals in the gypsum slurry can be increased, the generated alpha-gypsum crystals can be stabilized, crystal form transformation of the alpha-gypsum crystals cannot occur after dehydration and cooling, and the high-strength alpha-gypsum powder is obtained. And thus, 99.5% of alpha-semi-hydrated gypsum is formed, and industrial production is realized.
本发明属于废弃石膏回收领域，具体涉及一种利用废弃陶瓷石膏模生产高强度α石膏粉的工艺，具体包括以下步骤：将回收的废弃陶瓷石膏模经过破碎、粉磨、筛分去除杂物后，加水制成一定浓度的料浆，然后分别进行一次转晶与二次转晶，再对转晶后的料浆进行离心分离、干燥制得高强度α石膏粉，其中，二次转晶中采用氧化钇作为转晶剂，可以促进石膏料浆中α‑石膏晶体的成长速度，且可以稳定生成的α‑石膏晶体，使其不会在脱水降温后发生晶型的转化，以形成99.5%的α‑半水石膏，实现产业化生产。
Process for producing high-strength alpha gypsum powder by using waste ceramic gypsum mold
一种利用废弃陶瓷石膏模生产高强度α石膏粉的工艺
LIN ZHIHUI (author) / SU HUAIWEN (author) / SU JUNJI (author) / LI SHUANGZHAN (author) / LU DIZHEN (author) / PENG ZHAOYAO (author) / WEI JUZHEN (author)
2025-01-17
Patent
Electronic Resource
Chinese
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