How to Solve Discharge Blockage and Overheating of Sand Mills？

In the production of various coatings, inks and fine chemical products, sand mills serve as core wet grinding equipment. Their operational stability directly determines the production capacity and product quality of the entire production line. However, on the front lines of many factory workshops, operators frequently encounter equipment faults such as blockage at the discharge screen and sharp temperature rise of slurry inside the grinding chamber, which severely undermines production efficiency.

In fact, the root causes of frequent overheating and material blockage during sand mill operation are usually mismatches between grinding chamber structure and material viscosity characteristics. When the slurry has high viscosity or the grinding beads are of tiny particle sizes, conventional centrifugal separation structures tend to accumulate grinding media. If the rotor dynamics design is not adjusted according to actual processes and the motor power is simply increased blindly, only ineffective frictional heat will be generated inside the chamber, resulting in material denaturation and coarse particles.

To tackle these long-standing industry pain points, ELE, backed by years of technological accumulation, has launched a new generation of high-energy nano-grade horizontal sand mills. Equipped with a dedicated full heat exchange cooling jacket and large-area tubular centrifugal separation system, ELE sand mills resolve the temperature rise problem during high-viscosity material grinding, and support continuous high-flow discharge with grinding beads as small as 0.1 mm.

To adapt to the material properties of different customers, ELE horizontal sand mills adopt multiple rotor development routes. They include the EXW pin-type structure for high-energy-density nano grinding, the ENW turbine structure suitable for high-flow circulation grinding, and the economical and durable EBW disc-type sand mill. Diversified structural designs enable ELE sand mills to precisely cover various complex working conditions for ultra-fine dispersion ranging from micron to nano scale.

Beyond improved grinding performance, ELE horizontal sand mills have achieved comprehensive upgrades in mechanical seals and wear-resistant part material selection. The units are fitted with customized double mechanical seals and an independent cooling circulation system, thoroughly preventing corrosion of sealing rings by organic solvents. Meanwhile, the inner liner of the grinding chamber can be optionally customized with silicon carbide, zirconia or high-wear-resistant alloy steel, greatly extending the replacement cycle of consumable parts and lowering the overall downtime and maintenance costs for factories.

At the upcoming 2026 CHINACOAT China International Coatings Show, ELE will showcase a lineup of flagship sand mill models together with our technical expert team at Booth 3.1B31, China Guangzhou Coatings Show. If you are looking to resolve blockage and overheating issues of horizontal sand mills in your workshop, pre-register for free admission with our exclusive invitation code ZQC7S2Y4. Meet our engineers on-site to review process drawings and customized grinding solutions.