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2. 发明专利

ZA202207251B PREPARATION METHOD AND APPLICATION OF CEMENTING MATERIAL CONTAINING WASTE INCINERATION FLY ASH AND SLAG CEMENT 未知
公开(公告)号：ZA202207251B
公开(公告)日：2022-10-26
申请号：ZA202207251
申请日：2022-06-30
申请人： UNIV BEIJING SCIENCE & TECHNOLOGY , CHINESE ACADEMY OF ENV PLANNING
发明人： ZHANG SIQI , LIU XIAOMING , ZOU QUAN , XU RUNSHENG , LI YUE , XUE YANG , LI JIA , DONG KAI , NI WEN , ZHU RONG

3. 发明专利

ZA202108566B PREPARATION METHOD AND APPLICATION OF CEMENTED BACKFILL MATERIAL FOR LEAD-ZINC TAILINGS 未知
公开(公告)号：ZA202108566B
公开(公告)日：2022-02-23
申请号：ZA202108566
申请日：2021-11-03
申请人： UNIV BEIJING SCIENCE & TECHNOLOGY , UNIV CHINA GEOSCIENCES BEIJING
发明人： ZHANG SIQI , ZHAO TONG , TENG GUOXIANG , LI JIA , ZHANG GE , YANG HUIFEN , NI WEN , YAO JUN

4. 发明专利

AU2021106088A4 Preparation Method and Application of Low-Cost Clinker-free Cementitious backfill Materials 未知
公开(公告)号：AU2021106088A4
公开(公告)日：2021-10-28
申请号：AU2021106088
申请日：2021-08-20
申请人： UNIV BEIJING SCIENCE & TECHNOLOGY
发明人： ZHANG SIQI , LI JIA , LI HAO , LI YUE , TENG GUOXIANG , NI WEN , MA XUMING
IPC分类号： C04B28/14 , B09B3/00
摘要： The invention relates to a preparation method and application of a low-cost clinker-free cemented backfill materials, which is characterized by mainly consisting of cemented material and an aggregate, the cemented materials comprises the components in parts by weight as follow: 5-40 parts of municipal solid waste incineration(MSWI) fly ash generated by various processes, 30-80 parts of steel slag and 5-35 parts of flue gas desulfurization by-products; The aggregate is tailings in parts by weight, and is mixed with cementitious materials in a mass ratio of 4: 1; The concentration of slurry is kept at 62-82%. According to the invention, MSWI fly ash, steel slag and desulfurization by-products in iron and steel and coal power industries are combined to prepare a cemented backfill cemented agent, and the tailings genereted from mine are taken as aggregates to prepare a cemented backfill materials, which can show excellent filling rheological property and mechanical property, and harmful substance curing property without adding other admixtures, and is used for cemented filling of mined-out area. Due to the low cost of all-solid waste system, the disposal subsidies of MSWI fly ash varies from 1500 to 4500 yuan/ton in different regions, the cost of cementing materials and filling materials is very low, even negative, so it is an excellent substitute for existing cement agents or mine filling cement powder.

5. 发明专利

AU2021103385A4 Cemented backfill materials containing circulating fluidized bed incineration fly ash and its preparation method 未知
公开(公告)号：AU2021103385A4
公开(公告)日：2021-08-26
申请号：AU2021103385
申请日：2021-06-16
申请人： UNIV BEIJING SCIENCE & TECHNOLOGY
发明人： ZHANG SIQI , GAO WEI , LI JIA , NI WEN , LI JIAJIE , SHI TENGYU
IPC分类号： C04B7/26 , C04B28/14 , E21F15/00
摘要： The invention relates to a cementing backfill materials containing circulating fluidized bed incineration fly ash, which comprises a cementing material and iron tailings, wherein the mass ratio of the cementing material to the iron tailings is 1:4; The cementing material comprises the following raw materials in parts by weight: 20-90 parts of slag, 5-60 parts of circulating fluidized bed incineration fly ash and 6-15 parts of desulfurized gypsum. The cemented backfill materials can meet the high compressive strength (4 ~ 5 MPa) required for filling goaf, and can be used as mining backfill materials. The filling performance (rheology, fluidity and setting time) of the cemented backfill materials provided by the present invention is better than cement at the same ratio, which makes it a good substitute for cement. After long-term maintenance, the leaching concentration of heavy metal ions and soluble salts is lower than the underground Class III water quality standard. The cemented backfill materials makes use of materials such as circulating fluidized bed incineration fly ash and slag, which not only realizes the environmental protection purpose of treatment, but also reduces the cost of cemented filling mining technology, and realizes the win-win situation of treating with and green filling.

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