Tower mill is a newly developed high-efficiency fine grinding and ultra-fine grinding machine in recent years. It adopts vertical mill installation mode, propeller agitation grinding, and has high efficiency fine grinding ability after cooperating with cyclone or classifier. The steel balls used in tower mill are mainly small balls with diameter less than 40 mm, which require that they can not be broken, abrasive-resistant and round-free. The steel balls supplied by Rainbow Company are mainly hot-rolled, cast and dismantling of old bearing balls.
Highly Recommendation: Bearing disassembly steel balls. Waste bearing steel balls used in tower mills have excellent effect. Because of their high hardness, non-breaking, super wear resistance and other excellent qualities, they are most suitable for tower mills and vertical mills.
二、Rainbow Tower Mill Ball Productivity Table
| Process name | Production line | Diameter Range of Steel Ball in Vertical Mill | Capacity | Note |
| Hot rolled steel ball | 3 | φ12—40mm Ball Small Diameter Steel Section | 10000 ton/year | Capacity is estimated, actually adjusted according to the order quantity |
| Casting grinding ball | — | φ10—40mm Ball Medium diameter steel section | 10000 ton/year | |
| Bearing disassembly grinding ball | --- | φ5mm-40mm Balls | 8000 ton/year |
三、Rainbow Tower Mill Steel Balls Material No and Chemical Composition Table
| Material No | Ball model（mm） | Chemical composition | Mechanical properties | |||||||
| C | MN | CR | S | P | SI | Surface hardness（HRC） | impact toughness | Crusher rate | ||
| LB-1 | φ10-40 | 0.6-0.8 | 0.8-1.2 | ≤0.25 | ≤0.035 | ≤0.035 | 0.17-0.37 | 58-65 | ＞12 j/cm² | ＜0.5% |
| LB-2 | φ30-100 | 0.7-0.9 | 0.7-0.8 | 0.3-0.9 | ≤0.025 | ≤0.013 | 0.17-0.37 | 55-65 | ＞12 j/cm² | ＜0.8% |
| LB-3 | φ90-140 | 0.6-0.8 | 0.6-0.8 | 0.7-0.9 | ≤0.03 | ≤0.03 | 1.6-1.9 | 58-65 | ＞12 j/cm² | ＜0.8% |
| LB-4 | φ20-150 | 0.9-1.2 | 0.2-0.4 | 1.2-1.8 | ≤0.025 | ≤0.027 | 0.15-0.35 | 55-60 | ＞10 j/cm² | ＜1% |
| LB-5 | φ20-150 | 0.4-0.6 | 0.5-0.8 | 0.9-1.2 | ≤0.035 | ≤0.035 | 0.17-0.37 | 55-65 | ＞12 j/cm² | ＜0.5% |
| LB-6 | φ80-150 | 0.7-0.9 | 0.8-1.2 | 0.7-1.2 | ≤0.03 | ≤0.03 | 0.1-0.4 | 58-65 | ＞10 j/cm² | ＜1% |
| LB-7 | φ80-150 | 0.9-1.1 | 0.9-1.2 | 0.4-0.8 | ≤0.03 | ≤0.03 | 0.2-0.3 | 58-65 | ＞10 j/cm² | ＜1% |
| LB-18 | φ30-125 | 0.7-0.9 | 0.7-1.2 | ≤0.25 | ≤0.035 | ≤0.035 | 0.17-0.37 | 55-65 | ＞10 j/cm² | ＜1% |
| LB-20 | φ50-130 | 0.8-1.1 | 0.7-0.9 | ≤0.25 | ≤0.035 | ≤0.035 | 0.17-0.37 | 55-65 | ＞10 j/cm² | ＜1% |
| Note | Support OEM or customize special ingredient steel balls according to customer requirements. The hardness of small straight D steel ball is higher than that of large diameter steel ball. If the hardness range is required, it can be adjusted by heat treatment process. | |||||||||
四、Tower Mill Grinding Ball Physical Parameters
|
NOMINAL DLAMETER (mm) (ins) |
THEORETICALDA METER(mm) |
APPROX.MASS PER BALL(g) |
AVERAGE NUMBER OF BALLS PER MT |
|
| 20 | 3/4 | 20.8 | 37 | 27000 |
| 25 | 1 | 26 | 72 | 13900 |
| 30 | 1¼ | 31.2 | 125 | 8000 |
| 40 | 1½ | 41.6 | 396 | 3380 |
| 50 | 2 | 52 | 578 | 1730 |
| 60 | 2½ | 62.4 | 999 | 1000 |
| 70 | 2¾ | 67.6 | 1270 | 790 |
| 75 | 3 | 78 | 1951 | 510 |
| 90 | 3½ | 88.4 | 2839 | 350 |
| 95 | 3¾ | 93.6 | 3371 | 290 |
| 100 | 4 | 98.8 | 3964 | 250 |
| 115 | 4½ | 114.4 | 6154 | 162 |
| 120 | 4¾ | 119.6 | 7032 | 142 |
| 125 | 5 | 124.8 | 7989 | 125 |
| 135 | 5¼ | 135.2 | 10158 | 98 |
| 140 | 5½ | 140.4 | 11375 | 88 |
五、Vertical Mill Forging Ball Packaging
Usually, four kinds of packing methods are used, ton bag, barrel, ton bag + wooden bracket, barrel + wooden bracket.
六、Conclusion
Our company has been manufacturing and exporting tower mill balls for many years. We have rich experience in production, inspection, transportation and export. We are willing to base our long-term cooperation on high-quality products, timely shipment and delivery, competitive prices and satisfactory services. Our goal is to be a professional supplier of high-quality wear-resistant consumables for mines in China.
七、Physical pictures of balls
