Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of phosphogypsum-based cement admixture
The invention relates to a preparation method of a phosphogypsum-based cement admixture, which comprises the following steps: stirring and mixing phosphogypsum and papermaking black liquor in a slurry tank to prepare phosphogypsum slurry, conveying the phosphogypsum slurry to a gypsum cyclone through a slurry discharge pump for separation, dehydrating the separated concentrated base solution through a vacuum belt conveyor to obtain dehydrated phosphogypsum, and adding the dehydrated phosphogypsum into the slurry tank to obtain the phosphogypsum-based cement admixture. Uniformly stirring and mixing the dehydrated phosphogypsum with sodium sulfite, carbide slag, a naphthalene water reducer, a defoaming agent and fly ash in proportion, and aging for 3-5 days to obtain a finished product; the main raw materials adopted by the method are industrial common wastes, the comprehensive recycling of the industrial wastes is increased, the economic benefit is higher, the environment can be protected, the process is simple, the sources of the raw materials are wide, the method is suitable for large-scale production, and the obtained finished product is a cement additive with multiple functions of grinding aiding, retarding, water reducing, air entraining and the like. And the produced finished product has multiple functions and strong action, and can enhance multiple properties of the cement product.
一种磷石膏基水泥外加剂的制备方法，将磷石膏与造纸黑液在浆液池中搅拌混合制成磷石膏浆体，通过浆液排出泵将磷石膏浆体送至石膏旋流器进行分离，分离后的浓缩底液通过真空皮带机进行脱水处理，处理后得到脱水磷石膏，脱水后的磷石膏与亚硫酸钠、电石渣、萘系减水剂、消泡剂、粉煤灰按比例搅拌混合均匀，陈化后既得成品，陈化时间3‑5天；本方法采用的主要原料为工业常见的废弃物，加大工业废弃物的综合回收利用，具有较高的经济效益且可以保护环境，工艺简单，原料来源广泛，适合大规模生产，所得成品是一种具有助磨、缓凝、减水、引气等多功能的水泥外加剂，生产的成品功能多，作用强，能对水泥产品的多项性能进行增强。
Preparation method of phosphogypsum-based cement admixture
The invention relates to a preparation method of a phosphogypsum-based cement admixture, which comprises the following steps: stirring and mixing phosphogypsum and papermaking black liquor in a slurry tank to prepare phosphogypsum slurry, conveying the phosphogypsum slurry to a gypsum cyclone through a slurry discharge pump for separation, dehydrating the separated concentrated base solution through a vacuum belt conveyor to obtain dehydrated phosphogypsum, and adding the dehydrated phosphogypsum into the slurry tank to obtain the phosphogypsum-based cement admixture. Uniformly stirring and mixing the dehydrated phosphogypsum with sodium sulfite, carbide slag, a naphthalene water reducer, a defoaming agent and fly ash in proportion, and aging for 3-5 days to obtain a finished product; the main raw materials adopted by the method are industrial common wastes, the comprehensive recycling of the industrial wastes is increased, the economic benefit is higher, the environment can be protected, the process is simple, the sources of the raw materials are wide, the method is suitable for large-scale production, and the obtained finished product is a cement additive with multiple functions of grinding aiding, retarding, water reducing, air entraining and the like. And the produced finished product has multiple functions and strong action, and can enhance multiple properties of the cement product.
一种磷石膏基水泥外加剂的制备方法，将磷石膏与造纸黑液在浆液池中搅拌混合制成磷石膏浆体，通过浆液排出泵将磷石膏浆体送至石膏旋流器进行分离，分离后的浓缩底液通过真空皮带机进行脱水处理，处理后得到脱水磷石膏，脱水后的磷石膏与亚硫酸钠、电石渣、萘系减水剂、消泡剂、粉煤灰按比例搅拌混合均匀，陈化后既得成品，陈化时间3‑5天；本方法采用的主要原料为工业常见的废弃物，加大工业废弃物的综合回收利用，具有较高的经济效益且可以保护环境，工艺简单，原料来源广泛，适合大规模生产，所得成品是一种具有助磨、缓凝、减水、引气等多功能的水泥外加剂，生产的成品功能多，作用强，能对水泥产品的多项性能进行增强。
Preparation method of phosphogypsum-based cement admixture
一种磷石膏基水泥外加剂的制备方法
PAN YUFENG (Autor:in) / LI JIALONG (Autor:in) / LI LIPING (Autor:in) / TONG XIANJUN (Autor:in) / CHEN HUI (Autor:in) / CUI YANHUA (Autor:in) / DONG LEITING (Autor:in)
01.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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