1. Fill rate: 2. Loading amount: Dm: ball mill inner diameter; L: ball mill length; ψ: ball mill filling rate; γ: steel ball bulk density; Steel ball diameter: d: the particle size of the material to be ground; 3. Comparison of ball diameter and ore size: Ball diameter 120 100 90 80 70 60 50 40 Feed mine granularity 12-18 10-12 8-10 6-8 4-6 2-4 1-2 0.3-1.0 4. Calculate the yield (%) of each fraction in the ball mill feed, and sample and sieve by itself: 5. Steel ball ratio (weight / kg): 6. Calculate the weight of the steel ball for each specification, convert it to the number of steel balls, and load it into the mill according to the number of steel balls of each diameter. nitrate,nitrate salt,sulfate-free,HNO₃,Ionic compounds MIANYANG KEJIXIN TRADING CO., LTD , https://www.kjxnitrate.com