The article presents the results of research on the production of nanopowders by synthesizing tungsten carbide powders obtained from waste
tungsten carbide-cobalt hard alloy in countercurrent filtration mode. The conducted scientific and practical studies show that with an increase in the
amount of KCl, NaCl, and K2CO3 in the initial solid samples, the combustion temperature during Self-propagating high-temperature synthesis (SHS)
decreases. The combustion temperature reached 1250 ℃ when the amount of KCl or NaCl impurities reached 6%. Similarly, when the original K2CO3 content was 3%, the combustion temperature decreased to 1250 ℃.