TA32 / TA36 / TA37 Selection Guide for Iron Ore
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TA32 / TA36 / TA37 Selection Guide for Iron Ore

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1. Performance Comparison

ParameterTA32TA36TA37
Density≥3.20≥3.60≥3.70
Wear rateLowVery lowExtremely low
StrengthMediumHighVery high
Impact resistanceGoodBetterBest
PSD stabilityMediumHighHighest
Cost level★★★★★★

2. Requirements of Each Iron Ore Grinding Stage

① Primary Grinding

  • Large particle feed (5–20 mm)

  • Highest impact

  •  Recommended: TA32 / TA36

② Secondary Grinding

  • Target: 45–100 μm

  • Requires high efficiency & stable PSD

  •  Recommended: TA36 / TA37

③ Fine Grinding / Magnetic Separation Feed

  • Stable D80/D90 is crucial

  •  Recommended: TA37

3. Selection Logic

TA32 (≥3.20 g/cm³)

Best for cost-sensitive primary grinding.
➡ Economical, stable performance.

TA36 (≥3.60 g/cm³)

Most versatile choice for iron ore.
➡ Works for both primary and secondary grinding.

TA37 (≥3.70 g/cm³)

Best option for fine grinding and magnetic separation.
➡ Highest efficiency & finest PSD control.

4. Selection Table

StageRecommended ModelsReason
Primary grindingTA32 / TA36High impact, cost-sensitive
Secondary grindingTA36 / TA37Efficiency + PSD control
Fine grindingTA37Best PSD stability

5. Usage Recommendations

  • Ball size:

    • Primary: 50–60 / 40–50 / 20–30 mm

    • Secondary: 30 / 20 / 10 mm

  • Filling rate: 30–40%

  • Top-up rate: 2–5% weekly

  • The finer the grinding → the higher density recommended


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