Patents by Inventor Nikolai Petrovich Slotvinsky-Sidak

Nikolai Petrovich Slotvinsky-Sidak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of preparing vanadium pentoxide from metallurgical slags containing vanadium
    Patent number: 4039614
    Abstract: A method for extracting vanadium pentoxide from metallurgical slags containing vanadium with a ratio of (V.sub.2 O.sub.5 /CaO) being greater than 0.05 including roasting in an oxidizing medium a slag which has been disintegrated to a particle size less than 0.1 mm and then processing the roasted particles with solutions of phosphoric acid containing from 5 to 20 per cent by weight of H.sub.3 PO.sub.4, with a liquid-to-solid ratio of from 2-10:1 at a temperature of from 50.degree. - 100.degree. C for a period of time from 30 to 120 minutes.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: August 2, 1977
    Inventors: Nikolai Petrovich Slotvinsky-Sidak, Naum Volfovich Grinberg