摘要:
The invention relates to fluorine production, in particular to methods for producing fluorine from solid-phase metal fluorides and the complex salts thereof by thermal decomposition. Gaseous fluorine is used for many purposes such as the production of fluorine compounds by direct fluorination, for metal welding, for producing protective films on metals during machining metals and alloys, etc and in the form of etching reagent for microelectronics. Manganese salts with a high fluorine content, i.e. manganese tetrafluoride MnF4 and other salts, for example K3NiF7, K2NiF7, K2CuF6 and analogous compounds are used as initial compounds. The invention ensures a fluorine yield which is equal or higher than 99.0 %. The inventive method is safe and easily used for production.
摘要翻译:本发明涉及氟生产,特别涉及通过热分解从固相金属氟化物生产氟的方法及其络盐。 气体氟用于许多目的,例如通过直接氟化生产氟化合物,用于金属焊接,在加工金属和合金等过程中在金属上制备保护膜,并以微电子学蚀刻试剂的形式。 使用具有高氟含量的锰盐,即四氟化锰MnF 4和其它盐,例如K 3 NiF 7,K 2 NiF 7,K 2 C 6 F 6和类似化合物作为初始化合物。 本发明确保等于或高于99.0%的氟产率。 本发明的方法是安全的并且易于用于生产。
摘要:
A fluorine gas plant comprising a fluorine generating unit (1) connected to a fluorine supply line (2) having a point of use of fluorine (3) is disclosed which comprises a seismometer. The seismometer preferably is an accelerometer and detects earthquakes. It generates a signal which can trigger the shutdown of predetermined processes running in the plant.
摘要:
Process for the preparation manganese tetrafluoride Manganese tetrafluoride is prepared by a reaction between manganese difluoride or manganese trifluoride particles and elemental fluorine. During the reaction, surfaces of the particles are rendered fresh, e.g. by mechanical impact on the particles. Thereby, also agglomeration, sintering or vitrification of the particles is prevented. The impact is not so intensive that the particles would be crushed.
摘要:
A pyrometallurgical process and apparatus for converting spent potliners from aluminium manufacturing or other hazardous materials into an amorphous sodium and calcium fluroaluminosilicate glass frit and high carbon material. Spent potliners, sillica or siliceous material, and a calcium oxide source are fed into the non-burner end of a counter-current rotating kiln. The material is heated to destroy cyanides, convert fluoride salts to calcium fluoride and form a homogeneous liquid material. Carbon is then physically separated from the material. The material is then vitrified to produce a valuable glass frit and a high carbon material.
摘要:
A process and composition for removing moisture from a NF3 or F2 gas wherein the gas is contacted with alumina particles coated with aluminum trifluoride. The aluminum trifluoride is formed by reacting alumina particles with an aqueous solution of hydrogen fluoride.