WMB Series High-Alumina Ceramic Grinding Media

WMB Series High-Performance Alumina Ceramic Grinding Media

– Premium wear solution for non‑ferrous mining fine regrinding and energy reduction

In mineral processing, the performance of grinding media directly affects metallurgical recovery and operating costs. The WMB Series Ceramic Grinding Media is a premium product developed by Jiangxi Sanxin New Materials specifically for modern stirred mills (e.g., IsaMill) and secondary/tertiary ball mill grinding circuits. With high alumina purity, exceptional sphericity, and a dense microstructure, it enables mines to transition from high‑energy steel‑ball grinding to energy‑efficient ceramic grinding.

1. Detailed Applications & Target Scenarios

The WMB series is not a generic grinding ball; it is precisely designed for fine and regrinding applications:

• Suitable ores: Copper (Cu), gold (Au), lead‑zinc (Pb‑Zn), and oxidative pretreatment of refractory gold ores.

• Compatible equipment:

• Stirred mills (IsaMill™, Vertimill®, SMD mills);

• Secondary/tertiary closed‑circuit ball mills;

• Tower mills for attrition‑type fine grinding.

• Core value: Can partially or fully replace steel balls / slugs, significantly reducing power consumption and media costs while maintaining product fineness (P80 = 20–45 μm).

2. Key Competitive Advantages & ROI

Compared to conventional steel balls and lower‑grade alumina media, the WMB series delivers tangible benefits:

1. Extremely low wear and iron contamination
   Vickers hardness ≥13 GPa (far exceeding steel’s ~6–8 GPa). Under high‑speed stirred‑mill conditions, unit wear is minimal. The ceramic composition produces no metallic debris, avoiding negative effects of iron ions on flotation reagents and concentrate grades – especially critical for oxide copper ores and lead‑zinc separation.

2. Significant energy savings
   Density (≥3.7 g/cm³) is much lower than steel (~7.8 g/cm³). At the same filling rate, mill torque is substantially reduced. Actual mine data show 15–30% reduction in total grinding power consumption.

3. Excellent particle‑size control
   Sphericity ≥96% ensures smooth rolling and uniform collision inside the mill, preventing over‑grinding or excessively wide particle‑size distribution caused by irregular shapes, thus improving flotation recovery.

4. High impact toughness
   Single‑ball crushing strength for 3 mm diameter ≥1400 N, ensuring no breakage or chipping under high pulp density and heavy loads, eliminating unplanned downtime due to broken media blocking screens and pipelines.

3. Detailed Physical Properties

Note: For different mills (e.g., IsaMill typically uses φ1.0–6.0 mm; ball mill secondary/tertiary uses φ15–60 mm), we offer precise particle‑size distribution (PSD) customization.

4. Chemical Composition & Phase Structure

High alumina content is the key to grinding performance. The WMB series strictly limits impurities to ensure stable crystalline phases:

5. Size Selection Guide (Matching Media to Mill Type)

To help you order the right product, we recommend the following sizing logic:

• Fine regrinding (P80 < 45 μm): Choose φ0.5 – φ3.0 mm – ideal for high‑speed stirred mills (IsaMill / SMD).

• Secondary grinding (P80 45–75 μm): Choose φ5.0 – φ15 mm – for Vertimill or small ball mills.

• Tertiary or coarse regrinding (P80 75–150 μm): Choose φ20 – φ60 mm – for conventional ball mills in the regrind circuit.

Our technical team offers free charge‑level calculation support based on your mill parameters (tip speed, filling rate, feed size).

6. Quality Assurance & Factory Testing

Each batch of WMB media undergoes comprehensive quality inspection before dispatch:

• X‑ray fluorescence (XRF) online monitoring of chemical composition.

• Random sampling for crushing fatigue tests and rotating wear trials.

• Sieve analysis before final packaging to ensure no size mixing or out‑of‑tolerance products.

Manufacturing complies with ISO 9001 quality management system requirements.

7. Standard Packaging & Storage Recommendations

To ensure product integrity during long‑distance ocean freight and harsh mine‑site storage, we provide:

• Inner packaging: Double‑layer waterproof, moisture‑proof PE bags (prevents dust contamination).

• Outer packaging: Heavy‑duty FIBC (big bags) for bulk, or 25 kg moisture‑proof paper bags / steel drums for fine sizes.

• Palletising: Export‑standard fumigation‑free wooden pallets with stretch wrapping.

• Storage tips: Keep in a dry indoor environment, avoid heavy stacking, and protect from acid/alkali corrosive atmospheres.

8. Manufacturer & Global Support

Jiangxi Sanxin New Materials Co., Ltd.
As a specialised manufacturer in the field of inorganic non‑metallic wear‑resistant materials, we not only supply standard products but also offer full life‑cycle management services for grinding media.

• Production base: Anyuan Industrial Park, Pingxiang City, Jiangxi Province, 337000, China

• Technical support hotline: +86‑19907097722 (24/7 consultation available)

• Customisation services: We can adjust Al₂O₃ content (75%–95%) or add toughening formulations according to specific ore characteristics.