superfine grinding mill processes bentonite

• Publication time：2025-08-06
• Click：0

Application of Superfine grinding mill in Processing Bentonite

Cosmetics Grade (2500 Mesh): Disperses nutrients in facial masks to improve absorption efficiency; makes the texture of lotions silky and more malleable.

Coating/Ink Grade (1250 Mesh): Replaces some organic thickeners in water-based coatings, balances thixotropy and leveling, reduces costs, and improves environmental performance; makes pigment particles disperse evenly in inks to prevent sedimentation.

Casting/Drilling (325 - 800 Mesh): In the casting industry, with moisture controlled at < 2%, it enhances the strength and plasticity of molding sand; in the oil drilling field, it stabilizes the wellbore and reduces drill tool wear.

Environmental Adsorbent (800 - 1250 Mesh): The specific surface area increases by 30%, and the adsorption capacity is increased to 150mg/g, which can efficiently treat heavy metal ions and organic pollutants in industrial wastewater.

Advantages of Superfine grinding mill in Processing Bentonite

Ultra-fine Grinding: Can grind bentonite to D97 = 5 - 45μm (325 - 2500 mesh), meeting the needs of industries such as cosmetics grade and coating grade, and improving product performance.

Low-temperature Grinding: The whole process is ground at a low temperature of ≤ 60℃, avoiding damage to the montmorillonite crystal structure, retaining water absorption and swelling properties and ion exchange capacity, and being suitable for industries such as medicine and food.

Energy-saving and High-efficiency: The energy consumption is 30% - 50% lower than that of traditional ball mills, the single-machine output is increased by more than 20%, and the supporting hot air system can dry wet materials simultaneously, shortening the process flow and reducing costs.

Environmental Upgrade: Equipped with a pulse dust removal system to achieve zero dust emission; the intelligent control system reduces manual intervention, improves production efficiency, and conforms to the development trend of automation and greening.

Process of Superfine grinding mill in Processing Bentonite

Inside the Superfine grinding mill, multiple sets of grinding rollers rotate around the grinding ring, and the bentonite is crushed by rolling and shearing. The built-in dynamic classifier screens particles of qualified fineness, and the coarse powder returns for grinding to form a closed-loop cycle. The air delivery system transports materials, reduces temperature, and separates impurities to ensure the purity and activity of the finished product.

Pretreatment Stage: The raw ore is crushed to ≤ 10mm by a jaw crusher. If the moisture content exceeds 15%, it is dried by a dryer.

Fine Grinding Stage: The bentonite enters the Superfine grinding mill, and the product fineness is determined by the pressure of the grinding rollers and the rotation speed of the classifier. Corresponding parameters need to be adjusted when producing products of different fineness.

Finished Product Collection Stage: The fine powder is collected through a cyclone separator and a bag filter, with a recovery rate of 99.9%, and the moisture of the finished product is controlled below 2%.

Key Points of Superfine grinding mill in Processing Bentonite

Grinding Roller Pressure: The range is 0.8 - 1.5MPa. If the pressure is insufficient, the fineness will not meet the standard, and if it is too high, the energy consumption will increase.

Classifier Rotation Speed: The range is 800 - 1500rpm. For every 100rpm increase, the fine powder rate of the finished product increases by 5%.

Fineness Not Meeting the Standard: Check the rotation speed of the classifier, and control the error within ±50rpm; check the wear of the grinding roller liner and replace it with a high-chromium alloy liner.

Equipment Vibration: Stop the machine to calibrate the dynamic balance of the grinding roller, and control the error within ≤ 5g·cm; use high-temperature lithium-based grease to lubricate the bearings and replenish it every 200 hours.

Summary

The Superfine grinding mill for processing bentonite has advantages such as ultra-fine grinding, low-temperature grinding, energy-saving and high-efficiency. The process is divided into pretreatment, fine grinding, and finished product collection stages. The key points are to control the grinding roller pressure and the classifier rotation speed, and there are solutions to problems such as fineness not meeting the standard and equipment vibration.