Complete Guide to Operating a Bentonite Grinding Mill: Step-by-Step Instructions

Introduction

Bentonite grinding is a critical process in industries ranging from construction to oil drilling. This guide provides comprehensive instructions for operating a bentonite grinding mill, with technical insights and equipment recommendations from ZENITH – a leading Chinese mining machinery manufacturer with over 30 years of expertise in grinding technology.

Bentonite grinding mill in operation

Section 1: Understanding Bentonite Properties

Bentonite’s unique swelling properties require specialized grinding approaches. Key characteristics include:

  • Mohs hardness: 1-2
  • Moisture content: 8-15% (typically)
  • Target fineness: 200-325 mesh for most applications

Section 2: Mill Selection Criteria

For bentonite processing, we recommend ZENITH’s XZM Ultrafine Mill series featuring:

  • Precision grading system (325-2500 mesh adjustable)
  • 30% lower energy consumption vs conventional mills
  • Special wear-resistant components for abrasive materials

XZM Ultrafine Mill cross-section diagram

Technical Highlight: XZM221 Model

Parameter Value
Capacity 0.5-4.5 ton/h
Power 75kW
Feed Size ≤20mm
Fineness 325-2500 mesh

Section 3: Step-by-Step Operation

1. Pre-Operation Checks

  1. Verify lubrication system (oil level/viscosity)
  2. Inspect grinding elements for wear (min 85% remaining thickness)
  3. Confirm pulse dust collector pressure (0.4-0.6MPa)

2. Startup Sequence

  1. Engage auxiliary systems (dust collector, classifier)
  2. Start main motor with empty load (≤30% rated current)
  3. Begin feeding at 20% capacity, gradually increasing

Modern grinding mill control interface

Section 4: Advanced Alternatives

For large-scale bentonite processing (15+ ton/h), consider ZENITH’s MTW Series Trapezium Mill with:

  • Curved air duct design (15% energy saving)
  • Integrated classifier system
  • Capacity up to 45 ton/h (MTW215G model)

Conclusion

Proper bentonite grinding requires understanding material characteristics paired with appropriate equipment. ZENITH’s grinding solutions combine German technology with localized manufacturing, offering:

  • 30+ patented technologies
  • Global service network (170+ countries)
  • Customizable solutions for specific bentonite applications
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