used in laser technology and also used in neodymium glass.Due to ultraviolet light, infrared absorption performance is excellent,.used for precision instrument.It is a kind of raw materials made of metal neodymium and various kinds of neodymium alloy and permanent magnet alloy.

Colours glass delicate shades ranging from pure violet through wine-red and warm gray. Light transmitted through such glass shows unusually sharp absorption bands. The glass is used in astronomical work to produce sharp bands by which spectral lines may be calibrated. Glass containing neodymium is a laser material in place of ruby to produce coherent light.  Preparation : Retrieve NdFeB scrap to produce. Rare earth chloride solution as the raw material, After extraction, make the rare earth mixture divided into mild, moderate and severe group of rare earth, Then oxalic acid precipitation, separation, drying, burning be obtained.

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