A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Standard phosphorus building gypsum, preparation method and application thereof
The invention belongs to the technical field of phosphogypsum, and particularly relates to standard phosphorus building gypsum and a manufacturing method and application thereof, wherein the standard phosphorus building gypsum has required indexes including phase composition, chemical component content, radionuclide limit and fineness. The manufacturing method comprises the following steps: S1, adding water into a phosphogypsum raw material, washing, and filtering to prepare washed phosphogypsum; S2, dehydrating and drying the washed phosphogypsum, and removing attached water to obtain dried phosphogypsum; S3, stir-frying the dried phosphogypsum to obtain stir-fried phosphogypsum; S4, grinding the stir-fried phosphogypsum until the 200-mesh sieve residue is less than or equal to 5% to obtain stir-fried phosphogypsum powder; S5, aging the stir-fried phosphogypsum powder until the content of soluble anhydrous phase gypsum (AIII) is less than or equal to 4% to obtain standard phosphorus building gypsum. The standard phosphorus building gypsum has good adaptability to various additives such as a water reducing agent and the like.
本发明属于磷石膏技术领域，具体涉及一种基准磷建筑石膏及其制作方法与应用，其要求指标包括物相构成、化学成分含量、放射性核素限量、细度，制作方法包括如下步骤：S1向磷石膏原料中加水进行洗涤、过滤，制得水洗磷石膏；S2将水洗磷石膏进行脱水干燥，去除附着水，得干燥磷石膏；S3将干燥磷石膏炒制，得炒制磷石膏；S4将炒制磷石膏进行研磨至200目筛余量≤5％，即得炒制磷石膏粉；S5将炒制磷石膏粉进行陈化至可溶型无水相石膏(AⅢ)含量≤4％，即得基准磷建筑石膏；该基准磷建筑石膏与减水剂等多种外加剂有良好的适应性。
Standard phosphorus building gypsum, preparation method and application thereof
The invention belongs to the technical field of phosphogypsum, and particularly relates to standard phosphorus building gypsum and a manufacturing method and application thereof, wherein the standard phosphorus building gypsum has required indexes including phase composition, chemical component content, radionuclide limit and fineness. The manufacturing method comprises the following steps: S1, adding water into a phosphogypsum raw material, washing, and filtering to prepare washed phosphogypsum; S2, dehydrating and drying the washed phosphogypsum, and removing attached water to obtain dried phosphogypsum; S3, stir-frying the dried phosphogypsum to obtain stir-fried phosphogypsum; S4, grinding the stir-fried phosphogypsum until the 200-mesh sieve residue is less than or equal to 5% to obtain stir-fried phosphogypsum powder; S5, aging the stir-fried phosphogypsum powder until the content of soluble anhydrous phase gypsum (AIII) is less than or equal to 4% to obtain standard phosphorus building gypsum. The standard phosphorus building gypsum has good adaptability to various additives such as a water reducing agent and the like.
本发明属于磷石膏技术领域，具体涉及一种基准磷建筑石膏及其制作方法与应用，其要求指标包括物相构成、化学成分含量、放射性核素限量、细度，制作方法包括如下步骤：S1向磷石膏原料中加水进行洗涤、过滤，制得水洗磷石膏；S2将水洗磷石膏进行脱水干燥，去除附着水，得干燥磷石膏；S3将干燥磷石膏炒制，得炒制磷石膏；S4将炒制磷石膏进行研磨至200目筛余量≤5％，即得炒制磷石膏粉；S5将炒制磷石膏粉进行陈化至可溶型无水相石膏(AⅢ)含量≤4％，即得基准磷建筑石膏；该基准磷建筑石膏与减水剂等多种外加剂有良好的适应性。
Standard phosphorus building gypsum, preparation method and application thereof
一种基准磷建筑石膏及其制作方法与应用
LI ZEGANG (author) / CHEN SHANGWEI (author) / LUO TONG (author) / ZHOU LING (author) / ZHU GUOLIANG (author) / XU LIBIN (author) / HE XINZHOU (author) / CHEN YISU (author) / LIAO CHANG (author) / NIE XIAOPENG (author)
2021-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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