Recycling of lithium slag extracted from lithium mica by preparing white Portland cement

Facile activation of lithium slag for the hydrothermal synthesis of zeolite A with commercial quality and high removal efficiency for the isotope of radioactive 90Sr

“…The results in Table 1 (nos [1][2][3][4][5][6][7][8][9][10][11][12] show that the unactivated lithium slag produces a mixture of spodumene leaching residue (SLR) and quartz under all of the investigated conditions and the activated lithium slag produces a single phase of highly crystalline zeolite A under appropriate conditions, indicating that activation of the lithium slag is needed for the crystallization of zeolite A.…”

“…After the extraction of lithium, a large amount of solid waste of lithium slag containing mainly silicon and aluminium is left. For example, producing one ton of lithium carbonate leaves 10-20 tons of lithium slag 7 and the annual production of lithium slag in China is nearly 1 million tons. 8,9 Currently, a large amount of lithium slag is exposed in the environment and only a small portion of it is used as a raw material for cement, concrete, ceramic glazed tiles and activated clay, which are all low-value products.…”

A Review on Cementitious and Geopolymer Composites with Lithium Slag Incorporation

“…Therefore, investigations into the physical characteristics of LS encompass parameters such as the specific surface area (SSA) [ 14 , 41 ], specific gravity [ 33 ], density [ 42 , 43 ], moisture content [ 41 ], and particle size distribution [ 22 , 44 ]. In parallel, conventional analytical methods have been employed to scrutinize the chemical composition of LS, including X-ray diffraction (XRD) [ 23 , 44 ] and scanning electron microscopy with energy-dispersive spectroscopy (SEM/SEM-EDS) [ 44 , 45 , 46 ], as well as specialized techniques such as Fourier transform infrared spectroscopy (FTIR) [ 31 , 45 ], nuclear magnetic resonance (NMR) [ 30 , 47 ], X-ray photoelectron spectroscopy (XPS) [ 30 ], and thermogravimetry (TG)/thermogravimetric and derivative thermogravimetric analysis (TG-DTG) [ 19 , 43 , 48 ].…”

Effects of C-S-Hs-PCE and Na2SO4 on hydration behavior of cement-lithium slag binder

“…Due to the outstanding electrochemical properties, lithium has been applied widely in glass, pharmaceuticals, ceramic as well as lubrication industries, and demand quantity for lithium salts was continuously expanding recently [1,2]. During production process of lithium salts, enormous lithium slag (LS) produced from spodumene and lithium mica was emerged as industrial waste material [3][4][5][6][7][8][9], and more than 1 million tons of LS was released worldwide annually [4,7,10,11]. The discharged LS was heaped up outdoors, which occupied huge land resources, caused serious waste of natural resources and brought serious pollution [5,[12][13][14][15].…”

“…Noticeably, LS contained abundant zeolites, and possessed glassy pore structure with high internal surface area [2,9,30]. Therefore, the application of LS would have a remarkable negative impact on workability, and lead to a slow early strength development as well as prolonged setting time, due to a decreased hydration rate and retarded pozzolanic reaction [5,24,31].…”