Method for preparing vanadium-nitrogen alloy with inactive vanadium pentoxide catalyst

[0017] First, weigh 150g of the vanadium pentoxide catalyst used for deactivation after the preparation of sulfuric acid, rinse it with clear water and dry it naturally, place it in a ball mill for ball milling and pass through a 150 mesh sieve to obtain ball milled particles, and then ball mill the particles Put it into a tube furnace for calcination, control the calcination temperature to 170°C, and after calcination for 55 minutes, let it stand for cooling to obtain pretreated vanadium pentoxide particles; then spread the pretreated vanadium pentoxide particles prepared above on the bottom of the crucible, Sprinkle a mixture of 80g ferric oxide powder and 250g aluminum oxide powder above the pretreated vanadium pentoxide particles, and then spread a layer of 0.7cm thick magnesium powder above the mixture; , insert an 8cm magnesium strip into the magnesium powder, ignite the magnesium strip and slowly feed nitrogen into the crucible at the same time, control the rate of nitrogen

[0019] First, weigh 120g of the vanadium pentoxide catalyst used for deactivation after the preparation of sulfuric acid, rinse it with clear water and dry it naturally, place it in a ball mill for ball milling and pass through a 150 mesh sieve to obtain ball milled particles, and then ball mill the particles Put it into a tube furnace for calcination, control the calcination temperature at 150°C, and after calcination for 45 minutes, let it stand for cooling to obtain pretreated vanadium pentoxide particles; then spread the pretreated vanadium pentoxide particles prepared above on the bottom of the crucible, Sprinkle a mixture of 70g ferric oxide powder and 200g aluminum oxide powder above the pretreated vanadium pentoxide particles, and then spread a layer of 0.5cm thick magnesium powder above the mixture; , insert a 7cm magnesium tape into the magnesium powder, ignite the magnesium tape and slowly feed nitrogen gas into the crucible at the same time, control the nitrogen gas fe

[0021] First, weigh 125g of the vanadium pentoxide catalyst used for deactivation after the preparation of sulfuric acid, rinse it with clear water and dry it naturally, place it in a ball mill for ball milling and pass through a 150 mesh sieve to obtain ball milled particles, and then ball mill the particles Put it into a tube furnace for calcination, control the calcination temperature to 160°C, and after calcination for 50 minutes, let it stand for cooling to obtain pretreated vanadium pentoxide particles; then spread the pretreated vanadium pentoxide particles prepared above on the bottom of the crucible, Sprinkle a mixture of 75g ferric oxide powder and 220g aluminum oxide powder above the pretreated vanadium pentoxide particles, and then spread a layer of 0.55cm thick magnesium powder above the mixture; , insert a 7cm magnesium strip into the magnesium powder, ignite the magnesium strip and slowly feed nitrogen into the crucible at the same time, control the rate of nitrogen