METHOD AND DEVICE FOR OBTAINING A POWDER FROM PARTICLES OF TUNGSTEN OR TUNGSTEN COMPOUNDS WITH A SIZE IN THE NANO-, MICRON OR SUBMICRON RANGE

摘要

the invention is directed to a method for producing a powder composed of particles of tungsten or a tungsten compound, with a particle size in the nano - micron or submikronbereich, especially w, wo3, wc or wc tic or wc tac, recycling of products from heavy metal - or. tmetall alloys, in at least one of a dispersionsflu00fcssigkeit containing reactor containerin which the reduction of products during a rotation of the reactor vessel in a range between 0 and 90 rpm according to a predetermined algorithm, adjustable speed control is carried out.in the context of the given algorithm and the maximum angle of the reactor container between 0 and 40 degrees and the change of dip in a range between 0.5 and 2 complete cycles per minute, and also dispergierflu00fcssigkeit sulphuric acid with g elu00f6stem iron. the is s - fe3 + = 5 to 30 g / l and a ph of 1 to 3.and what kind of bioorganic complex from fe3 + and exo polymers containing an associated bacterial association of acidithiobacillus ferrooxidans, acidithiobacillus thiooxidans, leptospirillum ferrooxidans and ferroplasma acidiphilum, with the ratio between the volume of the products vn.o mi t hard - and / or metal alloys to the volume vb.r the dispersionsflu00fcssigkeit at 1: 4 vb.r / vn.o 1: 0.5, with the temperature t of the solution of the bioorganischen eisenkomplexe in the dispergiermittel in a range from 10 degrees c to 60 degrees c, and then is held by the nano - micron - and / or submikron - particles in the bioorganischen solution existing suspension ions of ni fe, ni - fe - cu and / or co, fe) are separated.with the separation of ni, cu and / or (2) the ph value changes, and the nanopowders after cleaning a desagglomeration with ball mills or ultrasound can be subjected to, and then in a vacuum at a temperature of 90 degrees to 130 degrees c and under a vakuu m 1 mbar up to 50 mbar is dried.