Why HGM100L Ring Roller Mill Produce Higher-quality Powder Than 4R3216 Raymond Mill?

Demand for 800–2500 mesh powder in coating and paper industries highlights the all-round strengths of HGM ring roller mill in overall capacity, energy efficiency, finished powder consistency and raw material adaptability.

With objective technical deduction, we conduct quantitative comparisons between the standard HGM100L ring roller mill and a typical 4R3216 Raymond mill from four core working condition parameters.

Preface: This article adopts unified test conditions: calcite as raw material, standard dry workshop environment, raw material moisture of 2%~3%, and uniformly crushed feeding size.

1. Fineness Production Mesh Range Comparison

Received mixed orders with various mesh specifications; the stable production range directly determines the scope of customer orders the plant can accept.

Mechanical structure logic perspective: 

1/ 4R3216 Raymond Mill:

Equipped with a single-layer single-ring grinding track and simple radial blade classifier.

Materials only undergo one round of extrusion and shearing per circulation, leading to limited grinding times.

Meanwhile, the blade classifier features inconsistent rotational radii and an uneven centrifugal force field, allowing fine particles to escape with airflow easily.

When the target fineness exceeds 400 mesh, the recovery rate of qualified powder drops continuously.

Under 1250 mesh working conditions, the fine powder recovery rate is lower than 28%, and the machine cannot produce eligible 2500 mesh powder at all.

Adjusting the main unit or fan speed fails to solve oversize particle issues, so it can only serve low-standard orders for road base and desulfurizer filler.

2/ HGM100L Ring Roller Mill:

Fitted with multi-layer grinding tracks and a vertical cylindrical cage classifier.

Patent documents prove the cage rotor features consistent rotation radius and uniform full-range centrifugal field to accurately cut ultra-fine particle sizes.

Materials are refined repeatedly layer by layer when falling, and optimized circulating return air duct greatly improves fine powder capture efficiency.

As verified by test data, the machine stably produces powder from 150 mesh to 2500 mesh.

The 1250 mesh fine powder recovery rate maintains above 85%.

One single HGM mill unit can process both low-cost ordinary filler and high-value ultra-fine powder for coating & rubber simultaneously.

It delivers far higher production flexibility without purchasing multiple separate grinders for coarse and fine powder production.

Listed below is the performance comparison table of the two grinding machines:

Parameter Index	Traditional Raymond Mill	HGM Ring Roller Mill
Stable Production Mesh Range	80~325 mesh	150~2500 mesh
1250 Mesh Fine Powder Recovery Rate	Less than 28%	Over 85% steadily
2500 Mesh Production Capacity	Incapable of producing qualified finished powder	Sustainable Mass Production

2. Hourly Output & Power Consumption: HGM Doubles Output

Hourly output and unit power consumption under identical fineness serve as core indicators to evaluate equipment economy.

We take 325 mesh calcite as a unified calculation benchmark, with measured data shown below:

Parameter Index	4R3216 Traditional Raymond Mill	Our HGM100L Ring Roller Mill
Total Matching Power	79kW	145kW
Standard Output 325 Mesh	3.0~4.5t/h	6.0~10t/h
Unit Power Consumption 325 Mesh	36~42kWh/t	18~22kWh/t
Unit Power Reduction Ratio	Benchmark	47.62% Lower
Stable Output 1250 Mesh	No Valid Production Data	1.5~5.5 t/h

Total Matching Power Perspective:

1\ 4R3216 Raymond Mill

The total matching power of the 4R3216 Raymond mill is only 79kW, yet its single-layer grinding design results in low crushing efficiency.

The blade classifier duct creates heavy airflow resistance; most electric energy is consumed on invalid wind loss and incomplete grinding.

If the plant runs 6000 hours annually, producing 30,000 tons of 325 mesh powder will consume over 1.08 million kWh, bringing a heavy long-term electricity burden.

2\ HGM100L Ring Roller Mill

Although the installed power of HGM100L rises to 145kW, its multi-layer multi-roller grinding structure greatly boosts mechanical energy conversion efficiency.

Air ducts are optimised via fluid simulation to cut invalid airflow loss. Test data indicates its hourly output reaches 6–10 tons at 325 mesh, with unit power consumption only 18–22kWh/t, a 47.62% reduction compared with a Raymond mill.

The extra power input of the high-power main unit is fully offset by doubled output.

For 1250 mesh ultra-fine processing, the traditional Raymond mill has no stable production capacity, while HGM can sustain 1.5–3 tons per hour output.

No comparable rival exists in the ultra-fine powder segment in terms of energy efficiency.

3. Raw Material Feeding & Moisture Adaptability: HGM Tolerates Fluctuating Ores With Less Line Modification

Due to seasonal moisture variation, the equipment’s tolerance for feeding particle size and moisture directly determines the investment in front crushing and drying systems.

The comparison table of adaptability parameters is as follows:

Parameter Index	4R3216 Traditional Raymond Mill	Our HGM100L Ring Roller Mill
Max Allowable Feeding Size	≤30mm	≤20mm
Standard Adaptable Moisture	≤4%	≤3%
Failure Under High Moisture	Chamber Caking, Air Duct Blockage, Frequent Shutdown for Cleaning	Sealed Chamber Resists Material Adhesion

Grinding chamber design perspective:

1\ 4R3216 Raymond mill

The grinding chamber of the 4R3216 Raymond mill is semi-open. Internal rotating shovels continuously stir damp materials, easily causing accumulation and adhesion.

The industry standard applicable moisture is limited to ≤4%. Once raw material moisture exceeds the threshold, frequent blockages occur, adding extra cleaning downtime every month.

Besides, the machine reserves no standardised interface for hot air drying equipment.

To process high-humidity ore, the factory has to build an independent complete pre-drying line with high civil and equipment modification costs.

2\ HGM100L ring roller mill

The HGM100L requires feeding materials crushed below 20mm, meaning stricter control over the front crushing process.

However, its fully sealed multi-layer grinding chamber largely avoids powder retention and adhesion, with standard applicable moisture controlled within 3%.

When facing seasonal moisture fluctuation of mine raw materials, large-scale reconstruction of the whole production line is unnecessary.

HGM boasts far higher fault tolerance for various mining raw materials.

4. Finished D97 Particle Size Deviation: HGM Powder Avoids Losses

Excessive particle fluctuation leads to unqualified finished industrial products.

The comparison of classifier structure and powder precision is shown below:

Parameter Index	Traditional Raymond Mill	Our Ring Roller Mill
Classifier Structure	Radial Blade Analyser	Vertical Variable-Frequency Cage Classifier
Fineness Adjustment Method	Stop Machine to Replace Belt Pulley	PLC Online Digital Frequency Regulation
D97 Deviation 325 Mesh	±6~10μm	Within ±1μm
Downstream Applicable Products	Road Base, Low-Grade Filler	Coating, Plastic, Paper High-End Filler

 

Particle Deviation Perspective

1\4R3216 Traditional Raymond Mill

Particle deviation is fundamentally determined by the classifier structure.

The 4R3216 Raymond mill adopts fixed radial blade analysers.

Operators must shut down and replace pulleys to adjust mesh, only supporting segmented gear tuning without online fine-tuning.

Different radii inside the classifier create variable linear speeds, failing to fully intercept oversized particles.

Tested D97 deviation reaches ±6~10μm with broad particle distribution and excessive coarse grains, easily triggering rejection by coating and plastic buyers, resulting in dual losses of orders and logistics.

2\The HGM100L Ultrafine Mill

The HGM100L mill is equipped with a vertical variable-frequency cage classifier.

Operators set the target mesh digitally on the control cabinet without shutdown.

The cage maintains uniform centrifugal force across all areas to precisely intercept oversize grains.

Multi-batch tests prove its D97 deviation stays within ±1μm, delivering outstanding particle consistency across batches.

It fully meets acceptance standards of high-value fine powder and eliminates long-term economic losses caused by product returns and rework.

Comprehensive comparison of four core working condition parameters reveals that the traditional 4R3216 Raymond mill only suits low-value coarse powder below 325 mesh. It suffers inherent structural drawbacks in ultra-fine output capacity, unit energy consumption, raw material tolerance and finished powder uniformity.

Supported by patented multi-layer grinding and variable-frequency cage classifier design. HGM100L ring roller mill achieves stable production from 150 mesh to 2500 mesh, cuts unit power consumption significantly, tolerates fluctuating mining raw materials and produces consistent powder meeting high-end market standards. It is the optimal selection for new-built and upgraded ultra-fine powder production lines of non-metallic mineral processing plants.