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Method of recovering and regenerating waste gas desulfurizing and defluorinating absorbent liquid continuously,Method of producing magnesium fluoride coating, antireflection coating, and optical element

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Magnesium fluoride is an inorganic compound with the formula MgF₂. The compound is a white crystalline salt and is transparent over a wide range of wavelengths, with commercial uses in optics that are also used in space telescopes. It occurs naturally as the rare mineral sellaite.

Method of recovering and regenerating waste gas desulfurizing and defluorinating absorbent liquid continuously

ActiveCN1974430ALow investment costLow running costDispersed particle separationWater/sewage treatmentSulfite saltSodium bisulfite

The method of recovering and regenerating waste gas desulfurizing and defluorinating absorbent liquid continuously includes absorbing SO2 and / or fluoride from waste gas with alkaline absorbent to generate desulfurizing and defluorinating absorbent liquid containing sodium sulfite, sodium bisulfite and / or fluoride; the subsequent reacting the desulfurizing and defluorinating absorbent liquid with magnesium-base suspension or solid to obtain magnesium sulfite and / or magnesium fluoride precipitate; filtering to eliminate magnesium sulfite and / or magnesium fluoride precipitate, and recovering the filtrate at pH 6.5-9.5 for reuse. The said method has fast regeneration reaction speed, low cost and complete reaction.

Owner:陆泳凯 +1

Method of producing magnesium fluoride coating, antireflection coating, and optical element

InactiveUS20110027577A1Improve anti-reflection effectLow refractive indexLayered productsRadiation applicationsMagnesium fluorideSingle bond

A method of producing a magnesium fluoride coating includes a step of forming a coating by applying a solution containing a fluorine-containing organic magnesium compound represented by the following formula to a base and a step of heat-treating the coating while the coating is being irradiated with a beam of light with a wavelength of 246 nm or less:

Mg(CF₃—X—COO)₂ (1)

wherein X represents a single bond or one of —(CF₂)_n—, —(CH₂)_m—, and —CH₂CF₂— that may have a substituent, where n and m each represent an integer of 1 to 4. The temperature of the heat-treating step can be 250° C. or lower. The coating can be irradiated with a beam of light with a wavelength of 185 nm or less.

Method of producing magnesium fluoride coating, antireflection coating, and optical element

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Owner:CANON KK

2 results about "Magnesium fluoride" patented technology

Method of recovering and regenerating waste gas desulfurizing and defluorinating absorbent liquid continuously

Method of producing magnesium fluoride coating, antireflection coating, and optical element

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