A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing recycled aggregate through construction waste
The invention relates to the technical field of construction waste recovery processing, in particular to a method for preparing recycled aggregate through construction waste. The method comprises thefollowing steps that construction waste is pre-crushed and prescreened to obtain a waste solid material, the waste solid material is subjected to primary crushing, a recycled aggregate primary productand crushed aggregates are obtained after impurity removal and vibration screening, and the recycled aggregate primary product is subjected to secondary crushing and vibration screening to obtain a second-stage material and crushed aggregates; the a second-stage material is loaded into a sealed container and heated after water vapor is injected, and coarse recycled aggregate and fine recycled aggregate are obtained through grinding, screening and winnowing. Through the method, cement mortar at the smooth position and the concave position of the surface of the recycled aggregate can be conveniently removed, and accordingly, the integrated removal rate of the cement mortar on the surface of the recycled aggregate is increased, the heat dissipation effect of the mode of conducting heating through the water vapor is good, and the follow-up sewage treatment problem is avoided.
本发明涉及建筑垃圾回收处理技术领域，尤其是涉及一种利用建筑垃圾制备再生骨料的方法，包括以下步骤：将建筑垃圾预破碎、预筛分得到废固体物料，将废固体物料初次破碎，并经分选除杂和振动筛分得到再生骨料初品和碎料，对再生骨料初品进行二次破碎与振动筛分得到二级物料和碎料；将二级物料装入密闭容器，通入水蒸汽进行加热后，经研磨、筛分及风选得到粗再生骨料和细再生骨料。该方法便于对再生骨料表面平滑处以及凹陷处的水泥砂浆进行去除，从而提升再生骨料表面水泥砂浆的整体去除率；使用水蒸汽进行加热的热量扩散效果好，且不存在后续污水处理问题。
Method for preparing recycled aggregate through construction waste
The invention relates to the technical field of construction waste recovery processing, in particular to a method for preparing recycled aggregate through construction waste. The method comprises thefollowing steps that construction waste is pre-crushed and prescreened to obtain a waste solid material, the waste solid material is subjected to primary crushing, a recycled aggregate primary productand crushed aggregates are obtained after impurity removal and vibration screening, and the recycled aggregate primary product is subjected to secondary crushing and vibration screening to obtain a second-stage material and crushed aggregates; the a second-stage material is loaded into a sealed container and heated after water vapor is injected, and coarse recycled aggregate and fine recycled aggregate are obtained through grinding, screening and winnowing. Through the method, cement mortar at the smooth position and the concave position of the surface of the recycled aggregate can be conveniently removed, and accordingly, the integrated removal rate of the cement mortar on the surface of the recycled aggregate is increased, the heat dissipation effect of the mode of conducting heating through the water vapor is good, and the follow-up sewage treatment problem is avoided.
本发明涉及建筑垃圾回收处理技术领域，尤其是涉及一种利用建筑垃圾制备再生骨料的方法，包括以下步骤：将建筑垃圾预破碎、预筛分得到废固体物料，将废固体物料初次破碎，并经分选除杂和振动筛分得到再生骨料初品和碎料，对再生骨料初品进行二次破碎与振动筛分得到二级物料和碎料；将二级物料装入密闭容器，通入水蒸汽进行加热后，经研磨、筛分及风选得到粗再生骨料和细再生骨料。该方法便于对再生骨料表面平滑处以及凹陷处的水泥砂浆进行去除，从而提升再生骨料表面水泥砂浆的整体去除率；使用水蒸汽进行加热的热量扩散效果好，且不存在后续污水处理问题。
Method for preparing recycled aggregate through construction waste
一种利用建筑垃圾制备再生骨料的方法
KANG HONGJUN (author)
2020-06-23
Patent
Electronic Resource
Chinese
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