公开(公告)号：US12221379B2

公开(公告)日：2025-02-11

申请号：US18633658

申请日：2024-04-12

Applicant: SHENZHEN UNIVERSITY

Inventor： Hongzhi Cui ,  Dapeng Zheng ,  Qiangwei Pang ,  Yu Jin ,  Yuan Fang

IPC: C04B18/02 ,  B09B3/27 ,  B09B3/70 ,  C04B18/04 ,  C04B20/10 ,  C04B28/06 ,  B09B101/90 ,  C04B111/00

Abstract: Disclosed are a method for preparing a non-sintered shell-wrapped ceramsite using solid waste meanwhile immobilizing a heavy metal in river sediment, and a non-sintered river-sediment-based shell-wrapped ceramsite, which relate to the technical field of building materials. The disclosure combines river sediment with a solid waste powder and an alkali activating powder material, and adopts multiple-step granulations to realize particle size control and physical pore formation, thereby obtaining a non-sintered ceramsite. A sulfoaluminate cement and a Portland cement are used to encapsulate the non-sintered ceramsite and form a shell by wrapping, thereby preparing a non-sintered river-sediment-based shell-wrapped ceramsite with internal porosity and dense shell.