Limestone Grinding Mill: Achieving 40 Mesh and Coarser Particle Sizes

We provide a wide range of mills — including Raymond mill, trapezoidal mill, vertical mill, ultrafine mill, and ball mill, obtained ISO9001 international quality certification, EU CE certification, and Customs Union CU-TR certification. Suitable for processing minerals such as limestone, phosphate, quicklime, kaolin, talc, barite, bentonite, calcium carbonate, dolomite, coal, gypsum, clay, carbon black, slag, cement raw materials, cement clinker, and more.

The discharge range of these mills can be adjusted to meet specific processing needs, typically from 80-400 mesh, 600-3250 mesh, and can achieve the finest particle size of up to 6000 mesh(D50).

If you are looking for a reliable grinding solution to turn stone or minerals into fine powder, please feel free to contact our online customer service.

Limestone Grinding Mill: Achieving 40 Mesh and Coarser Particle Sizes

Grinding limestone to achieve consistent 40 mesh and coarser particle sizes is a common requirement in numerous industries, from agriculture and construction to chemical manufacturing. While ultra-fine grinding gets a lot of attention, the ability to efficiently and reliably produce these medium-coarse grinds is crucial for many applications, including soil amendment, animal feed, desulfurization, and as a filler material. The challenge lies in selecting equipment that can handle the abrasive nature of limestone while delivering high throughput, consistent particle size distribution, and low operational costs.

Not all mills are created equal for this task. Traditional solutions like ball mills or basic Raymond mills can be inefficient, leading to high energy consumption, excessive wear on grinding media, and inconsistent product quality. Operators often face issues with over-grinding, which wastes energy producing unwanted fines, or under-grinding, which results in off-spec coarse material that requires re-processing.

The Key to Efficient Coarse Grinding

The ideal mill for producing 40 mesh limestone powder offers a robust design, precise particle size control, and high grinding efficiency. It should minimize energy waste on creating ultra-fine particles beyond the target specification. Key considerations include the grinding mechanism, the durability of wear parts, the efficiency of the internal classifier, and the overall system design for handling abrasive materials.

For operations targeting 40 mesh (approximately 425 microns) and coarser, a mill with a high-precision classifier is essential. This ensures that material is ground to the desired size and immediately separated, preventing it from staying in the grinding chamber and being ground further than necessary. This not only saves significant energy but also protects the final product quality.

Recommended Solution: MTW European Trapezium Grinding Mill

For producers seeking reliability and efficiency for 40 mesh limestone production, we highly recommend our MTW European Trapezium Grinding Mill. This mill is exceptionally well-suited for this specific range, offering a perfect balance of power, precision, and durability.

The MTW Mill features a bevel gear overall drive, which provides a more efficient power transfer than traditional worm gear systems, leading to lower energy consumption. Its inner automatic thin-oil lubricating system ensures smooth operation and protects critical components from the abrasive limestone dust, significantly reducing maintenance downtime. Perhaps most importantly, its advanced classifier allows for precise adjustment of the final product fineness, easily hitting the 40 mesh target and coarser sizes with a narrow particle size distribution and minimal oversize or undersize fractions.

With an input size of 0-50 mm and a capacity ranging from 3-55 tph, it can handle substantial feed stock and deliver high output of consistent, quality limestone powder. Its split-type shovel blade and cambered air duct design work together to improve grinding efficiency and reduce energy waste, making it an economically smart choice for high-volume production.

Beyond the 40 Mesh: Flexibility for Your Needs

While the MTW Mill excels at coarser grinds, we understand that production needs can evolve. For operations that may also require the capability to produce finer powders down the line, our MW Ultrafine Grinding Mill presents a formidable option. Although designed for ultra-fine powders, its robust construction and efficient design make it capable of coarser grinds as well, offering incredible flexibility. With a capacity of 0.5-25 tph and the ability to adjust fineness over a wide range, it’s a future-proof investment for growing operations.

Choosing the right grinding equipment is paramount to the profitability of your limestone processing operation. By selecting a mill engineered for your target particle size, you optimize energy usage, minimize wear part costs, and ensure a reliable supply of high-quality product for your customers.