According to the difference of the specific magnetic susceptibility of various minerals, the magnetic separation machine with different magnetic field strengths is generally divided into three categories: ferromagnetic minerals; medium magnetic minerals; weak magnetic minerals.
1. ferromagnetic minerals than the susceptibility of greater than 3000 × 10-9m3 / kg · magnetic iron ore, etc. pyrrhotite, i.e. with a weak magnetic separation device can be effectively separated from gangue minerals.
2. The magnetic minerals than the susceptibility of 500 ~ 3000 × 10-9m3 / kg, such as semi martite certain titanium and iron ore, chromium ore and the like, sorted by the magnetic separator apparatus.
3. weakly magnetic minerals, than the susceptibility of 15 ~ 500 × 10-9m3 / kg, such as hematite, limonite, iron carbonate, iron manganese ore, manganese hard, rhodochrosite, rutile titanium and certain Iron ore, etc., is recovered by strong magnetic separation and other methods, and the specific magnetic susceptibility is less than 15×10-6 cm 3 /g for non-magnetic minerals such as quartz , feldspar , fluorite and the like.
Serial number | Mineral name | Specific magnetic susceptibility 1 × 10 - 9 m 3 / kg | |
variation range | average value | ||
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 twenty one twenty two twenty three twenty four 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | magnetite Vanadium- containing titanium magnetite Pyrrhotite Ilmenite chromite Yellow copper ore Black mica Black tungsten ore Neodymium iron ore Limonite Pyrite Amphibole Brown sugar mine Hematite Emerald stone Chlorite tourmaline Monazite Serpentine Talc Peridot Rutile Apatite Fragrant stone Baotou Mine Beryl Glow mine Sphalerite 锡石 Zircon Poisonous sand Fluorite White tungsten stone Calcite Bubble bismuth Molybdenite White lead ore Barite Orthodox Huang Yu Shi Ying Galena | 11530.00～2671.02 1173.33～224.56 900.00～136.51 171.75~29.97 57.81~52.60 42.33～32.03 39.71~36.41 36.52~32.00 70.36～11.30 28.89~21.31 29.20~21.16 30.91～18.91 23.11～20.15 46.19~12.24 20.29~18.80 20.42~17.81 17.09~13.33 27.68~8.50 14.86~9.92 14.55~11.17 19.00~9.39 23.10~2.99 9.57~5.08 7.14~4.29 4.94~0.42 2.39~1.25 2.16~0.42 1.06~0.64 0.81～0.57 1.54~0.14 1.25~0.079 1.52~-0.08 0.00~-0.28 0.00~-0.17 -0.23~-0.52 -0.25~-0.44 -0.25~-0.61 -0.32~-0.37 -0.41～-1.03 -0.24~-0.90 | 92000.00 73000.00 4321.95 315.60 286.70 67.53 54.24 39.42 37.38 33.10 26.98 25.54 24.13 23.18 20.94 19.96 19.38 18.61 15.79 14.60 13.24 12.30 11.34 7.78 6.50 5.27 1.66 1.62 0.83 0.79 0.63 0.51 0.38 0.37 -0.096 -0.098 -0.27 -0.30 -0.33 -0.36 -0.50 -0.62 |
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