Bentonite Raymond Mill – The High-Efficiency Bentonite Grinding Mill for High-Quality Bentonite Powder Making Process sticky, high-moisture bentonite into consistent 80–400 mesh powder. This bentonite grinding machine features integrated drying and grinding, anti-clogging air-swept design, and preserves the crystal structure for maximum swelling performance.
A bentonite grinding mill based on Raymond mill technology is a specialized vertical air-swept ring-roll pulverizer designed to overcome the notorious challenges of grinding bentonite – a montmorillonite-rich clay known for its extreme water absorption, high stickiness, and strong swelling capacity. Standard mills quickly clog and overheat when processing raw bentonite. Our bentonite raymond mill solves this with a simultaneous drying and grinding system: hot air is introduced into the mill, flash-drying the moist feed while the rollers grind it into fine powder. This makes it a true bentonite powder making machine that operates continuously without blockage. It is the essential bentonite grinding machine for producing drilling mud, foundry sand binder, and waterproofing powder.
Raw bentonite can contain 15–30% moisture, making it one of the most difficult materials to grind. This bentonite grinding mill is equipped with a hot air furnace that introduces heated air directly into the grinding chamber. The powerful air stream flash-dries the bentonite as it is being ground, preventing the rollers from becoming coated with sticky clay and ensuring a continuous, uninterrupted flow of powder. No separate dryer is needed.
Overheating during grinding can collapse the montmorillonite crystal structure, destroying the very swelling property that makes bentonite valuable. The high-volume air-swept design of our bentonite raymond mill acts as a cooling mechanism, rapidly evacuating ground particles and dissipating frictional heat. The grinding zone stays at a low temperature, ensuring your bentonite powder retains its maximum sodium or calcium swelling capacity.
Bentonite is soft (Mohs 1–2), and over-grinding wastes energy and produces unwanted ultra-fines. The strong centrifugal fan in this bentonite grinding machine creates a high-velocity air flow that sweeps ground powder out of the chamber the moment it reaches the target size. The integrated classifier precisely separates fines from coarse particles, recycling oversized material back to the grinding zone.
Different applications demand exact particle sizes. The high-efficiency turbine classifier in this bentonite powder making machine allows you to dial in the required fineness: 100–150 mesh for foundry sand bonding, 200 mesh for drilling mud, and 325–400 mesh for high-performance waterproofing and cat litter. The narrow particle size distribution ensures consistent product performance batch after batch.
While pure bentonite is soft, mined material often contains quartz, feldspar, and other abrasive minerals. Our bentonite raymond mill features grinding rollers and rings cast from high-chromium alloy, providing a surface hardness that resists wear from these impurities. Component service life is extended by 2–3 times compared to standard materials, reducing maintenance costs on your bentonite grinding mill.
Bentonite dust is fine, pervasive, and can cause respiratory issues. The entire bentonite grinding machine operates under a fully sealed negative-pressure system. A pulse-jet bag filter captures all airborne dust, keeping emissions below 30 mg/m³ and providing a clean, safe, and regulation-compliant working environment.
| Model | Roller Qty | Max Feed (mm) | Output (t/h) | Product Fineness | Main Motor Power (kW) |
|---|---|---|---|---|---|
| 3R1410 | 3 | ≤15 | 0.3-1.0 | 80-400 mesh | 11 |
| 3R2115 | 3 | ≤20 | 0.8-2.0 | 80-400 mesh | 22 |
| 3R2615 | 3 | ≤20 | 1.0-2.5 | 80-400 mesh | 30 |
| 3R2715 | 3 | ≤20 | 1.2-3.0 | 80-400 mesh | 37 |
| 4R3216 | 4 | ≤25 | 1.5-4.0 | 80-400 mesh | 55 |
| 4R3220 | 4 | ≤25 | 2.5-5.5 | 80-400 mesh | 75 |
| 5R4119 | 5 | ≤30 | 3.0-8.0 | 80-400 mesh | 110 |
| 5R4121 | 5 | ≤30 | 4.0-12.0 | 80-400 mesh | 132 |
| 6R5525 | 6 | ≤35 | 6.0-15.0 | 80-400 mesh | 200 |
Note: Output data based on typical bentonite with moisture ≤6% after drying. Higher moisture will significantly reduce output. Final specifications subject to material testing results
Drilling Fluids: 200-mesh bentonite powder for water-based and oil-based drilling muds, providing viscosity and filtration control.
Foundry Sand Binder: 100–150 mesh bentonite powder used as a green sand binder in iron, steel, and non-ferrous metal casting.
Civil Engineering & Waterproofing: Fine bentonite powder for geosynthetic clay liners (GCL), slurry walls, and tunnel boring machine lubrication.
Cat Litter: Coarse to medium bentonite powder that clumps upon liquid absorption.
Agriculture & Feed: Bentonite powder as a pellet binder in animal feed and a soil amendment.
Pharmaceutical & Cosmetics: High-purity bentonite powder for creams, lotions, and detoxification products.
Specialized Bentonite Processing Know-How: We have deep experience configuring bentonite raymond mills for both sodium and calcium bentonite, handling moisture levels from 10% to over 30%.
Factory Direct Advantage: As the manufacturer, we supply the bentonite grinding mill directly to you at competitive factory prices with full engineering support.
Complete Turnkey Service: Free material testing, customized grinding and drying system design, foundation drawings, installation, commissioning, operator training, and a 12-month warranty are all included.
Fast Global Spare Parts Delivery: We maintain a complete inventory of wear parts for your bentonite powder making machine, ready for immediate dispatch to minimize any production downtime.
Yes. This is one of the core strengths of our bentonite grinding mill. With the integrated hot air system, it dries and grinds bentonite with up to 30% moisture in a single pass, eliminating the need for a costly separate dryer.
Absolutely not. The high-volume air-swept design keeps the grinding zone temperature low, preventing thermal damage to the montmorillonite crystal structure. Your bentonite powder will retain its full swelling capacity.
Foundry applications typically require bentonite powder between 100 and 150 mesh (150–106 µm), with a controlled particle size distribution. This bentonite powder making machine easily achieves and maintains this specification.
Using a 5R4119 bentonite grinding machine with hot air drying, you can expect approximately 3–5 tons per hour of 200-mesh powder, depending on the initial moisture and purity of your raw bentonite.
Kolev Equipment Technology Co., Ltd. is a large-scale private technology enterprise. The company is committed to the research and development, production and sales of technical equipment for the mining and metal ore industries. It has been deeply involved in the ultra-fine grinding, industrial drying and crushing sand making industries for many years. We can provide you with Provide intelligent solutions and mature supporting products, focusing on the development of various powder equipment, complete powder production lines, drying production lines, sand and gravel line equipment and projects.Products are sold to 160 countries and regions and are well received by customers.
Kolev Equipment has always been adhering to the business philosophy of surviving by quality and developing by credibility, striving to win the trust of customers with high-quality products and perfect after-sales service, and create a brilliant future for Kolev.
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