Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
All-solid waste concrete expansive agent and preparation method thereof
The invention belongs to the technical field of expansive agents, and particularly relates to an all-solid waste concrete expansive agent and a preparation method thereof. Wherein the expanding agent comprises the following components in percentage by mass: 60-70% of carbide slag, 3-8% of aluminum ash, 0-5% of Bayer process red mud and 25-35% of desulfurized gypsum. The preparation method of the expanding agent comprises the following steps: pulping, proportioning, making a filter cake, granulating, calcining and grinding to obtain a finished product. The all-solid waste concrete expansive agent can overcome the defects that in the prior art, clinker calcination of a concrete expansive agent consumes high-quality limestone resources, a large amount of greenhouse gas CO2 is discharged, and the ecological environment is damaged; according to the method, the problems of land occupation, environment pollution and serious pollution to surrounding underground water, soil, air and ecological environment caused by stacking of the carbide slag and the aluminum ash in the prior art are solved, and the solid wastes including the carbide slag, the aluminum ash, the red mud, the desulfurized gypsum and the like can be fully utilized, so that resource cyclic utilization of the carbide slag, the aluminum ash, the red mud, the desulfurized gypsum and the like is realized; raw material drying energy consumption and dust pollution are reduced, waste water is recycled for pulping, and water resources are saved.
本发明属于膨胀剂技术领域，具体涉及一种全固废混凝土膨胀剂及制备方法。其中，膨胀剂，按照质量份数计包括：电石渣60％～70％、铝灰3～8％、拜耳法赤泥0～5％、脱硫石膏25％～35％。膨胀剂制备方法，包括以下步骤：制浆、配料、制作滤饼、造粒、煅烧和磨粉获取成品。本发明的全固废混凝土膨胀剂，能克服上述现有技术中混凝土膨胀剂熟料煅烧消耗优质石灰石资源、大量排放温室气体CO2，破坏生态环境；电石渣和铝灰堆存占用土地，污染环境，对周围地下水体、土壤、空气和生态环境造成严重污染的问题，能够充分利用固体废弃物电石渣、铝灰、赤泥、脱硫石膏等，使其实现资源化循环利用；减少了原料烘干能耗和粉尘污染，废水循环制浆，节约水资源。
All-solid waste concrete expansive agent and preparation method thereof
The invention belongs to the technical field of expansive agents, and particularly relates to an all-solid waste concrete expansive agent and a preparation method thereof. Wherein the expanding agent comprises the following components in percentage by mass: 60-70% of carbide slag, 3-8% of aluminum ash, 0-5% of Bayer process red mud and 25-35% of desulfurized gypsum. The preparation method of the expanding agent comprises the following steps: pulping, proportioning, making a filter cake, granulating, calcining and grinding to obtain a finished product. The all-solid waste concrete expansive agent can overcome the defects that in the prior art, clinker calcination of a concrete expansive agent consumes high-quality limestone resources, a large amount of greenhouse gas CO2 is discharged, and the ecological environment is damaged; according to the method, the problems of land occupation, environment pollution and serious pollution to surrounding underground water, soil, air and ecological environment caused by stacking of the carbide slag and the aluminum ash in the prior art are solved, and the solid wastes including the carbide slag, the aluminum ash, the red mud, the desulfurized gypsum and the like can be fully utilized, so that resource cyclic utilization of the carbide slag, the aluminum ash, the red mud, the desulfurized gypsum and the like is realized; raw material drying energy consumption and dust pollution are reduced, waste water is recycled for pulping, and water resources are saved.
本发明属于膨胀剂技术领域，具体涉及一种全固废混凝土膨胀剂及制备方法。其中，膨胀剂，按照质量份数计包括：电石渣60％～70％、铝灰3～8％、拜耳法赤泥0～5％、脱硫石膏25％～35％。膨胀剂制备方法，包括以下步骤：制浆、配料、制作滤饼、造粒、煅烧和磨粉获取成品。本发明的全固废混凝土膨胀剂，能克服上述现有技术中混凝土膨胀剂熟料煅烧消耗优质石灰石资源、大量排放温室气体CO2，破坏生态环境；电石渣和铝灰堆存占用土地，污染环境，对周围地下水体、土壤、空气和生态环境造成严重污染的问题，能够充分利用固体废弃物电石渣、铝灰、赤泥、脱硫石膏等，使其实现资源化循环利用；减少了原料烘干能耗和粉尘污染，废水循环制浆，节约水资源。
All-solid waste concrete expansive agent and preparation method thereof
一种全固废混凝土膨胀剂及制备方法
DUAN XINGZE (Autor:in) / XIA RUIJIE (Autor:in) / WANG XUEZHEN (Autor:in) / ZHANG HONGZE (Autor:in) / LI WEI (Autor:in) / LU XIAOLIN (Autor:in)
10.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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