公开(公告)号：US20220306536A1

公开(公告)日：2022-09-29

申请号：US17283333

申请日：2020-01-17

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Zhaofeng LI ,  Jian ZHANG ,  Chunjin LIN

IPC: C04B28/08 ,  C04B28/14 ,  C04B14/10 ,  C04B14/04 ,  B01D53/14 ,  B01D53/50 ,  B01D53/62 ,  C02F1/28

Abstract: A red mud utilization method based on co-processing of industrial exhaust gas, sewage treatment and an environment-friendly and high-performance civil functional material, belongs to the technical field of environmental science and cementitious material preparation, and relates to a preparation process of a solid waste-based cementitious material, specifically including the steps: preparing an environment-friendly and high-performance red mud-based civil functional material by using slag obtained after sewage treatment with red mud and other solid wastes in physical and chemical activation and high-temperature calcination methods. The compressive strength of a solid waste-based cementitious material prepared by using the method can reach 29 MPa, the leaching quantity (lower than 3.0 ppm) of toxic elements such as heavy metals is far lower than the national standard requirement, and a solid waste-based cementitious material with great performance can be prepared.

公开(公告)号：US20220143571A1

公开(公告)日：2022-05-12

申请号：US17283591

申请日：2020-04-03

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Jian ZHANG ,  Zhaofeng LI

IPC: B01J20/12 ,  B01J20/18 ,  B01J20/26 ,  B01J20/30 ,  C02F1/28

Abstract: A red mud-based sewage treatment agent and a preparation method thereof, a red mud-based ceramsite concrete and a preparation method thereof, and applications, the agent including the following components: 80-90% of a solid waste complex after acidification treatment, 2-15% of an alkali activator, 0-1.0% of a water reducer, 0.5-2.0% of an ultrafine additive, and 1.0-5.0% of a treatment agent. The solid waste complex includes: at least one of red mud powder, blast furnace slag powder, fly ash, coal gangue powder and iron tailings powder. First, the red mud is modified to prepare an intermediate product, namely the red mud-based sewage treatment agent, which is used for absorption of pollutants in sewage and then used as a raw material again to prepare a final product, namely the red mud-based ceramsite concrete. Progressive comprehensive utilization of the red mud is realized, and adsorbed pollution factors can be sealed in the final product.

公开(公告)号：US20190024460A1

公开(公告)日：2019-01-24

申请号：US15757681

申请日：2016-07-11

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Qingsong ZHANG ,  Guangming PAN ,  Rentai LIU ,  Xiao ZHANG ,  Lei YANG ,  Kai WANG ,  Zhaofeng LI ,  Haitong SUI ,  Teng YANG ,  Chunguo LIU

IPC: E21B10/60 ,  E21B33/13 ,  E02D3/12

Abstract: An anti-collapse jet grouting drill bit with bi-directional rib wings, and a grouting consolidation including: a grouting pump connected to a high-pressure pipeline, which connects to an underground drill rig; an outer flat drill rod, connected with the underground drill rig; a sealing device, sheathed on the outer flat drill rod at the orifice of a drill hole, ensuring the outer flat drill rod is sealed with the orifice of the drill hole which connects to a jet grouting drill bit with bi-directional rib wings. The grouting pump jets slurry into the drill hole in a static osmotic manner through the jet rib wing drill bit, while the underground jet drill rig is rotated by the force of outer flat drill rod. The rotation of the jet slurry and the rib wings, repairs the hole wall by cutting chippings or squeezing the chippings back into the hole wall.