Method for the production of a powder consisting of particles of tungsten or of tungsten compounds with a particle size in the nano, micron or submicron range, especially of W, WO 3, WC or WC-TiC, WC-TaC or WC-TiC-TaC, through recycling of products of heavy metals' or hard metals' alloys in at least one reactor vessel containing a dispersion, characterized in that a) the degradation of the products is carried out under rotation of the reactor vessel, wherein the rotation speed can be controlled and adjusted and is in a range from 0 and 90 rpm according to a preset algorithm, wherein within the preset algorithm the maximum inclination angle (α max) of the reactor vessel is between 0° and 40° and the rate of change of the inclination angle (a) is in a range from 0,5 to 2 complete cycles per minute, whereby a complete cycle of the program comprises one inclination of the reactor vessel in each of the both directions, running through the inclination angles (+α max) - 0° - (-α max) - 0° - (+α max); b) the sulfuric acid with dissolved iron is used as the dispersing liquid, with S-Fe 3+ = 5 up to 30 g/L and pH value from 1 to 3, comprising further bioorganic complexes of Fe 3+ and exo-polymers; c) with an associated bacteria community of acidithiobacillus ferrooxidans, acidithiobacillus thiooxidans, leptospirillum ferrooxidans and ferroplasma acidiphilum; d) wherein the ratio of the volume V n,ο of the products with heavy or/and hard metals' alloys to the volume V b,r of the dispersing liquid is 1: 4 ≤ V b,r / V n,o ≤ 1: 0,5; e) wherein the temperature T of the solution of the bioorganic iron complexes in the dispersing liquid is kept in a range from 10 °C to 60 °C; f) wherein, subsequently, ions of Ni-Fe, Ni-Fe-Cu and/or Co-Fe are released and isolated from the resulting suspension of nano, micron and/or submicron particles in the bioorganic solution, wherein the isolation of Ni, Cu and/or Co leads to a change of the pH value; g) wherein, after cleaning, the nano powder undergoes a desagglomeration process by ball mills or with ultrasound, with an stabilization solution if necessary; h) and is subsequently dried in a vacuum oven at a temperature from 90 °C to 130 °C and under vacuum from 1 mbar to 50 mbar. a) the degradation of the products is carried out under rotation of the reactor vessel, wherein the rotation speed can be controlled and adjusted and is in a range from 0 and 90 rpm according to a preset algorithm, wherein within the preset algorithm the maximum inclination angle (α max) of the reactor vessel is between 0° and 40° and the rate of change of the inclination angle (a) is in a range from 0,5 to 2 complete cycles per minute, whereby a complete cycle of the program comprises one inclination of the reactor vessel in each of the both directions, running through the inclination angles (+α max) - 0° - (-α max) - 0° - (+α max); b) the sulfuric acid with dissolved iron is used as the dispersing liquid, with S-Fe 3+ = 5 up to 30 g/L and pH value from 1 to 3, comprising further bioorganic complexes of Fe 3+ and exo-polymers; c) with an associated bacteria community of acidithiobacillus ferrooxidans, acidithiobacillus thiooxidans, leptospirillum ferrooxidans and ferroplasma acidiphilum; d) wherein the ratio of the volume V n,ο of the products with heavy or/and hard metals' alloys to the volume V b,r of the dispersing liquid is 1: 4 ≤ V b,r / V n,o ≤ 1: 0,5; e) wherein the temperature T of the solution of the bioorganic iron complexes in the dispersing liquid is kept in a range from 10 °C to 60 °C; f) wherein, subsequently, ions of Ni-Fe, Ni-Fe-Cu and/or Co-Fe are released and isolated from the resulting suspension of nano, micron and/or submicron particles in the bioorganic solution, wherein the isolation of Ni, Cu and/or Co leads to a change of the pH value; g) wherein, after cleaning, the nano powder undergoes a desagglomeration process by ball mills or with ultrasound, with an stabilization solution if necessary; h) and is subsequently dried in a vacuum oven at a temperature from 90 °C to 130 °C and under vacuum from 1 mbar to 50 mbar.