High-purity lithium fluoride: core materials in multiple fields, setting sail to expand the global market

Lithium fluoride is a white powder or cubic crystal-like substance with a molecular formula of LiF and a molecular weight of 25.941. It has a high melting point, low refractive index and excellent optical transmittance.
Lithium fluoride has excellent optical transmittance, especially in the range of vacuum ultraviolet (VUV) to infrared band (about 105nm to 6μm). Therefore, it is widely used in the manufacture of high-performance optical crystals. Commonly used in infrared window materials, used as windows in laser rangefinders and infrared imaging systems, with extremely low absorption losses; ultraviolet optical devices, suitable for precision instruments such as UV spectrometers and fluorescence analyzers; laser crystal substrates, LiF crystals themselves can be doped with rare earth elements (such as Ce:LiF, Eu:LiF) to manufacture specific luminescent crystals, which are widely used in laser amplifiers and scintillation detectors; aerospace and military equipment, LiF windows have strong heat shock resistance and can withstand harsh environments. It is one of the preferred materials for military optoelectronic systems.
In the process of electrolytic refining of metals (especially aluminum and rare earth metals), the melting point and fluidity of the electrolyte directly affect energy consumption and yield. The advantages of lithium fluoride in this field are that it can reduce melting point, viscosity, side reactions of electrolysis, and be green and environmentally friendly. Adding LiF can significantly reduce the overall melting point of the electrolyte, reduce energy consumption, optimize the fluidity of the melt, and improve the migration efficiency of metal ions, thereby accelerating the electrolysis rate. Compared with traditional additives, LiF is cleaner in the reaction, reduces environmental pollution, and adapts to the future trend of clean metallurgy.
In the manufacture of special optical glass, lithium fluoride is often used to adjust the refractive index and dispersion to achieve the required optical parameters. Lithium fluoride can improve the transmittance, especially in the ultraviolet and infrared light regions, LiF can significantly improve the transparency of the glass. It can also adjust the refractive index, which is suitable for the production of low-dispersion optical lenses to meet the needs of complex imaging systems for distortion control. In addition, lithium fluoride has good heat resistance and corrosion resistance, which allows optical glass to maintain stable performance in high temperature or high humidity environments and extend product life.
Because of its excellent thermal stability and chemical inertness, lithium fluoride is used as a flux and solvent to add to a variety of glass, glaze and enamel formulas. Its functions include lowering the melting temperature to help the raw materials blend more easily, improving the gloss and flatness to make the glass or ceramic surface smoother and more delicate, enhancing the corrosion resistance and improving the acid and alkali resistance of the product, improving the performance of welding materials, and improving the metal bonding strength and the beauty of the seams.
Lithium fluoride is a high-purity fine chemical. Its physical properties determine that the packaging must have sealing, stability and moisture resistance. This product uses a 25kg cardboard barrel outer packaging and a double-layer plastic bag sealed inner packaging. The outer packaging is strong, pressure-resistant, and shock-proof, which is convenient for warehousing and loading and unloading. It meets the general standards for the transportation of dangerous goods at home and abroad. The inner packaging is made of high-density polyethylene or polypropylene, which has excellent corrosion resistance, acid and alkali resistance, and moisture resistance, ensuring the quality stability of lithium fluoride during transportation and storage. This double-layer packaging provides dual protection for safety and moisture resistance for lithium fluoride transportation.