Cost-effective Bentonite Vertical Roller Mill

Cost-effective Bentonite Vertical Roller Mill

Key Advantages

✅ Energy Efficient

Energy consumption is 30%–50% lower than traditional ball mills. The Energy-saving Vertical Mill adopts the principle of material bed grinding, where grinding rollers directly compact materials on the grinding disc, avoiding the energy waste caused by steel ball collisions in ball mills .

✅ Integrated Drying & Grinding

Bentonite raw ore often has high moisture content (up to 25–35%). Our bentonite grinding mill introduces hot air (up to 400°C) directly into the grinding chamber, simultaneously drying and grinding the material in a single step—eliminating the need for a separate pre-dryer. Final product moisture is stabilized at ≤1% .

✅ Precise Fineness Control

Built-in dynamic classifier allows easy adjustment of product fineness from 80 to 3000 mesh (170–5μm). The finished product has a narrow particle size distribution and consistent quality .

✅ Low Operating Cost

Less wear: Roller and liner materials are high-quality alloys, extending service life to 2–5 years for non-metallic minerals .

Easy maintenance: Rollers can be swung out using hydraulic devices for quick roller sleeve replacement, minimizing downtime .

Low power consumption: Up to 40–50% energy savings compared to ball mills .

✅ Compact Footprint

Occupies only 50%–70% of the space required by a ball mill system. Can be installed outdoors, reducing civil construction costs .

✅ High Automation

Equipped with PLC central control systems, enabling remote and local control. Automatic lubrication supports 24/7 uninterrupted production with minimal labor .

✅ Environmentally Friendly

The entire system operates under full negative pressure with no dust leakage. Equipped with pulse dust collectors, emission levels meet strict environmental standards (≤10mg/Nm³). Low vibration and low noise (<80 dB) .

Vertical Mill for Bentonite Technical Specifications

System Composition

A complete bentonite vertical grinding system consists of the following units:

1. Feeding system: Surge bin, vibrating feeder and belt scale to deliver materials uniformly and stably.

2. Vertical mill main unit: Grinding disc, grinding rollers, reducer and hydraulic system.

3. Powder separator: Adopts dynamic-static combined structure to precisely control the fineness of finished powder.

4. Drying system: Hot blast stove (available in gas-fired, oil-fired and coal-fired types) that can supply process hot air up to 400°C.

5. Dust collecting system: Pulse bag filter, which collects finished powder and treats flue gas dust to meet emission standards simultaneously.

6. Control system: PLC centralized control system for real-time monitoring of all operating parameters of the whole equipment.

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Working Principle

The motor drives the grinding disc to rotate through the reducer. Raw materials fall onto the center of the grinding disc via the feed inlet, while hot air enters the mill through the air inlet. Driven by centrifugal force, materials move towards the edge of the grinding disc and get crushed by the squeezing force of grinding rollers when passing through the annular grooves on the disc.

 

The crushed materials are lifted by high-speed airflow at the air ring on the edge of the grinding disc. Large particles fall back to the disc for regrinding. As airborne materials pass through the dynamic-static separator, rotating blades send coarse powder back to the grinding disc for secondary grinding. Qualified fine powder is carried out of the mill by airflow and collected by the powder collecting device as finished products. Moist materials are dried during contact with hot gas to satisfy the required moisture content of final products.

Case

1. What raw material do you want to grind?
2. What is your target capacity (tons per hour)?
3. What fineness do you need (mesh)?
4. What is your end-use application?