The invention discloses a process for manufacturing military nitre or black 
gunpowder. The process for manufacturing the military nitre or black 
gunpowder comprises the following steps: 1) selecting raw materials; 2) respectively screening the raw materials by virtue of a 
sieve more than 100 meshes; 3) batching and mixing, namely batching the screened single 
raw material, placing the batched raw materials into an automatic 
pyrotechnic composition mixing 
machine, and mixing for 3-5 minutes until the raw materials are uniformly mixed; 4) moistening 
medicine and carrying out continuous tabletting, 
pelletizing and sorting; 5) 
drying and cooling, namely 
drying gunpowder particles obtained in step 4) by virtue of an 
infrared ray optical wave 
pipe or a hot 
air channel and then cooling the gunpowder particles; 6) spraying a 
moisture-proof agent or 
polishing, namely placing the gunpowder particles in step 5) into a 
moisture-proof agent spraying tank, spraying a proper amount of a 
moisture-proof agent, spraying while the moisture-proof agent spraying tank is rotated, uniformly covering or 
polishing, so that a moisture-proof effect is realized; 7) 
drying, cooling and packaging the 
medicine particles sprayed with the moisture-proof agent in step 6). The invention also discloses a 
system for manufacturing the military nitre or black gunpowder. The process and 
system for manufacturing the military nitre or black gunpowder have the advantages of easy operation, implementation of pipeline 
process control, low labour cost, high production efficiency, low labour intensity, high 
safety coefficient, 
high density of the produced gunpowder particles and good follow-up using effect.