Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Ai Xiang Wu"'
Publikováno v:
工程科学学报, Vol 45, Iss 8, Pp 1281-1292 (2023)
Mineral resources are essential to human life and social development and play an important role in national security and economic development. China has huge reserves of metal mineral resources, but the per capita possession is low. Especially, it is
Externí odkaz:
https://doaj.org/article/8eaccabb08b04751af5737e0fdab9556
Publikováno v:
工程科学学报, Vol 45, Iss 1, Pp 1-8 (2023)
High-concentration tailings pastes are commonly encountered in the surface deposition and underground cemented paste backfill. It is necessary to forecast the pressure loss along the pipe and the flow behavior in the mined-out area when tailings past
Externí odkaz:
https://doaj.org/article/d492fab768374f1d8e20a130f63d5777
Publikováno v:
工程科学学报, Vol 44, Iss 12, Pp 1999-2007 (2022)
To investigate the early hydration and consolidation mechanism of superfine metal tailings powder in the CaO–CaSO4–H2O system, a clinker-free consolidation material based on iron tailings powder was prepared by superfine grinding lime, gypsum, an
Externí odkaz:
https://doaj.org/article/a919fae27ad1412aaada0312cc476202
Publikováno v:
工程科学学报, Vol 44, Iss 11, Pp 1811-1820 (2022)
Hemihydrate phosphogypsum (HPG), as a cementing material for mine filling, will spontaneously transform into phosphogypsum (PG) in the stockpiling state. The gelling activity decreases, and meeting the requirements of mechanical properties required f
Externí odkaz:
https://doaj.org/article/6dcedeb0ec544e909bc009e7020f0431
Publikováno v:
In Case Studies in Construction Materials December 2022 17
Publikováno v:
工程科学学报, Vol 44, Iss 5, Pp 840-848 (2022)
Whether domestic or foreign, the utilization of phosphogypsum (PG) resources is not satisfactory. A chemical plant in Guizhou produces phosphoric acid through a semi-aqueous process to obtain the byproduct hemihydrate phosphogypsum (HPG), which has a
Externí odkaz:
https://doaj.org/article/594bd726de0a49079f4ae36580d88a76
Publikováno v:
工程科学学报, Vol 44, Iss 4, Pp 496-503 (2022)
Tailings and waste rock produced in metal mines are the most common industrial solid wastes all over the world, resulting in serious environmental and safety issues. Cemented paste backfill (CPB) is widely used for tailings management and stope treat
Externí odkaz:
https://doaj.org/article/b14bfa67dfd24208bf7ac23d7e28dec8
Publikováno v:
工程科学学报, Vol 44, Iss 2, Pp 163-169 (2022)
In the future, the output of ultrafine full tailings will explode due to the massive mining of low-grade deposits and demand for the recovery of useful minerals. The best way to dispose of ultrafine full tailings is to prepare them into the paste for
Externí odkaz:
https://doaj.org/article/cb36240e28d54f4c99bc446b595776d9
Publikováno v:
工程科学学报, Vol 44, Iss 1, Pp 11-25 (2022)
In China, solid waste backfill technology has been used in metal mines for more than half a century. It has been essential for comprehensive excavation and utilization of mineral resources, environmental protection, and engineering safety. The core c
Externí odkaz:
https://doaj.org/article/c212e24fddf44ab2b17213b0dafb9e7b
Publikováno v:
工程科学学报, Vol 43, Iss 11, Pp 1425-1432 (2021)
The real-time inline monitoring technologies of focused beam reflectance measurement (FBRM) and particle video microscopy (PVM) were used to analyze the aggregate structure evolution during the operation of a dynamic thickening system. The tailings d
Externí odkaz:
https://doaj.org/article/7dbda6eb803a42c8940917a7d2805bc3