Cement Mill

The High-Performance Grinding System for Producing Portland and Blended Cements

The Cement Mill is a specialized grinding system engineered for the efficient and precise reduction of cement clinker and gypsum into the fine powder known as Portland cement. Optimized for high throughput, energy efficiency, and product quality control, it manages the critical process of transforming granular, hard clinker into a reactive powder with specific surface area (Blaine) requirements. Modern cement mills are central to producing consistent, high-strength cement for global construction.

Cement Mill

Key Features

  • Clinker-Specific Grinding Technology

    Designed to handle the high grindability index and abrasive nature of cement clinker, utilizing optimized grinding media (balls, cylpebs) and liner profiles.

  • Closed-Circuit Grinding with High-Efficiency Separator

    Operates in conjunction with an external dynamic or static separator (cyclone) to form a closed circuit, continuously recycling coarse material for maximum grinding efficiency and precise particle size control.

  • Cement Cooling System

    Integrates internal water spraying (mill internals) or external cement coolers to control grinding temperature, preventing gypsum dehydration and ensuring optimal cement quality.

  • Multi-Compartment Design (for ball mills)

    Often features two or more chambers with different grinding media sizes and liner types to progressively grind material from coarse clinker to fine cement.

  • Advanced Process Control

    Equipped with instrumentation to monitor mill sound, elevator power, and separator speed for automated control of feed rate and product fineness.

Advantages

  • Optimized for Cement Production

    Every aspect, from mechanical design to system integration, is tailored for the specific physical and chemical requirements of cement grinding, ensuring maximum performance.

  • High Production Capacity & Consistency

    Capable of continuous, large-volume output with stable product properties (fineness, strength) batch after batch.

  • Energy Efficiency

    The closed-circuit operation with high-efficiency separators significantly reduces specific energy consumption (kWh/ton) compared to open-circuit systems.

  • Product Flexibility

    Can be used to produce a wide range of cement types (OPC, PPC, PSC) by adjusting clinker, gypsum, and additive ratios, as well as grinding parameters.

  • Proven Global Standard

    Represents the dominant and most reliable technology for cement finish grinding worldwide.

Applicable Raw Materials

  • Cement Clinker

    The primary feed material, produced from a cement kiln.

  • Gypsum (or Anhydrite)

    Added to control setting time (typically 3-5%).

  • Supplementary Cementitious Materials (SCMs)

    Such as granulated blast furnace slag, fly ash, pozzolana, or limestone for producing blended cements.

  • Other Mineral Additives

    For specialty cement formulations.

Basic Structure & Components

Air-Swept Coal Mill
Grinding Mill Body

Typically a large-diameter ball mill or vertical roller mill (VRM) specifically designed for cement. For ball mills, this includes a multi-compartment cylindrical shell.

Grinding Media (for ball mills)

A carefully graded charge of high-chromium steel balls or cylpebs of varying sizes.

Mill Liners

Specially profiled wear plates (e.g., classifying liners) that optimize media motion and grinding efficiency in each compartment.

Diaphragms

Perforated partitions separating mill compartments, controlling material flow and media segregation.

High-Efficiency Separator

An external dynamic or cyclone air classifier that separates fine product from coarse material for recycling.

Mill Drive System

A high-power motor coupled with a gearbox (central or girth gear drive) for ball mills, or a planetary gearbox for VRMs.

Feed & Discharge Systems

Continuous feeding of clinker, gypsum, and additives; discharge of ground cement to the separator.

Cement Cooling System

May include internal mill spray system or a downstream cement cooler (e.g., tube cooler, fluidized bed cooler).

Dust Collection System

Baghouse filter for collecting finished cement from the separator air stream.

Technical Data

Specifications Effective volume (m3) Feed size (mm) Rotating speed (r/min) Load of grinding media (t) Driving Mode Main motor Main reducer weight (t)
Type Power Type Speed ratio
MB1864 14.76 ≤25 23.9 18.5 Edge JR137-8 210 ZD60-8 4.5 35
MB1870 16.44 ≤25 23.9 21 Edge JR138-8 245 ZD60-8 4.5 39.2
MB1875 17.68 ≤25 23.9 22.5 Edge JR138-8 245 ZD60-8 4.5 40
MB2265 21.3 ≤25 21.4 31 Edge JR148-8 380 ZD70-9 5 49
MB2270 23.1 ≤25 21.4 33.4 Edge JR148-8 380 ZD70-9 5 52
MB2275 24.7 ≤20 21.4 34 Edge JR158-8 380 ZD70-9 5 60
MB2295 30.3 ≤20 21.4 41 Edge JR1510-8 475 ZDH70-9 5 70
MB22110 35.8 ≤20 21.4 50 Edge JR1512-8 570 ZD80 5 92
MB22130 42.4 ≤20 21.4 53 Edge YR630-8 630 ZD80 5 106.1
MB2470 28.17 ≤20 20.4 39 Edge JR1512-8 570 ZD80 5 72
MB2480 32.2 ≤20 20.4 45 Edge JR1512-8 570 ZD80 5 77
MB2490 36.2 ≤20 20.4 48 Edge JR1512-8 570 ZD80 5 81
MB24100 40.3 ≤20 20.91 50 Edge JR1512-8 570 ZD80 5 111
MB24110 43.4 ≤20 20.91 58 Edge JR1512-8 630 MBY630 5 125
MB24120 46.5 ≤25 21.5 64 Edge YR800-8 800 MBY710 6.3 126
MB24130 49.6 ≤25 21.5 70 Edge YR800-8 800 MBY710 6.3 130.6
MB26100 45.47 ≤20 19.6 66 Edge YR800-8 800 MBY710 5.6 140
MB26130 60.5 ≤25 19.11 80 Edge YR1000-8 1000 MBY710 4.5 158
MB3090 58.5 ≤25 18.98 85 Edge YR1000-8 1000 MBY710 5.6 147
MB30110 71 ≤20 18.98 95 Edge YR1250-8 1250 MBY(X)800 5.6 165
MB30120 73.9 ≤20 18.98 103 Edge YR1400-8 1400 MBY(X)900 6.3 175
MB30130 76.8 ≤20 18.98 112 Edge YR1400-8 1400 MBY(X)900 6.3 190
MB32110 75.4 ≤20 18.2 112 Edge YR1400-8 1400 MBY(X)900 6.3 213
MB32130 88.95 ≤20 18.4 123 Edge hollow shaft YR1600-8 1600 MBYX1000 7.1 216
18.4 123 Edge double slide shoe YR1600-8 1600 MBYX1000 7.1 220
MB32140 96.5 ≤20 18.2 132 Edge YR1800-8 1800 MBYX1000 6.3 237
MB34110 91.2 ≤20 18.2 120 Edge YR1600-8 1600 MBYX1000 6.3 230
MB35115 99.8 110.8 ≤20 17.38 130 Edge YR1800-8 1800 MBYX1000 6.3 242
MB35130 ≤20 17.38 156Max Edge hollow shaft YR2000-8 2000 MBYX1000 6.3 258
MB35130 ≤20 17.38 156Max Edge double slide shoe YR2000-8 2000 JDX-100 6.3 250
M35130 ≤20 16.6 156Max Center hollow shaft YR2000-8 2000 MFY200A 273
M38120 108.5 ≤20 16.3 143 Center hollow shaft YR2500-8 2500 MFY250A 310
M38120 108.5 133.9 ≤25 16.3 143 Center double slide shoe YR2500-8 2500 MFY250A 320
M38130 ≤25 17 190 Max Center hollow shaft YR2500-8 2500 MFY250A 320
M38130 ≤25 190 Max Center double slide shoe YR2500-8 2500 JS130-C 330
MB38130 ≤25 16.6 190 Max Single edge and double driving YRKK800-8 2500 DBS250 325
M40130 149 ≤25 16.3 192 Center double slide shoe YRKK900-8 2800 JS140-A 348
M42110 138 164 ≤25 15.8 15.6 200 230 Center double slide shoe YR2800-8 2800 JS140-A 350
M42130 ≤25 Center double slide shoe YRKK1000-8 3550 JS150-B2 380
M42130 ≤25 Center double slide shoe YRKK1000-8 3550 MFY355A 390
M42145 ≤25 16 255 Center double slide shoe YRKK1000-8 3800 MFY400A 405
M46140 210 ≤25 15 285 Center double slide shoe YR1000-8 4200 JS160-C 485
M50150 260 ≤25 14 350 Center double slide shoe YRKK1000-8 6000 598

Key Differentiators vs. Other Grinders & Mills

Both are large grinding systems, but the Cement Mill is optimized for the final, finish-grinding stage of hard, abrasive clinker to a very high fineness. A Raw Meal Mill is for the raw mix grinding stage (softer materials like limestone/clay) to a coarser fineness for the kiln.

A Cement Mill is a highly specialized application of ball mill technology. It features specific liner designs, compartmentalization, cement cooling, and is always part of a closed-circuit system with a high-efficiency separator—configurations not standard on a general-purpose mineral ball mill.

Both are closed-circuit systems, but an Air-Swept Coal Mill integrates grinding and drying with hot air for a fuel. A Cement Mill grinds a hydraulic binder at controlled temperatures (often requiring cooling) and focuses on achieving specific physical properties (fineness, strength) rather than combustion characteristics.

A Chain Mill is for dry, brittle, organic materials. A Cement Mill is for extremely hard, mineral-based clinker. They are at opposite ends of the material hardness and application spectrum.

It is the cornerstone technology for the final, value-adding stage of cement manufacturing, engineered for precision, efficiency, and scale. Its performance directly determines the quality and economic viability of the final cement product.