Nigeria’s construction industry is experiencing robust growth, driven by urbanization, infrastructure development, and housing projects. A critical component of this growth is the consistent supply of high-quality construction aggregates. Granite, being one of the most abundant and durable igneous rocks in Nigeria, serves as a primary raw material for producing aggregates used in concrete, asphalt, and road bases. However, the transition from raw granite blocks to usable aggregate requires precise processing, where grinding and milling technology plays a pivotal role. Achieving a specific fineness, such as 150 mesh (approximately 100 microns), is often essential for applications requiring fine fillers, specialized concrete mixes, or as a base for further industrial processing. This article explores the technical considerations for granite grinding in Nigeria and highlights optimal milling solutions.
Granite is a hard, abrasive material composed primarily of quartz and feldspar. Grinding it to a fine, consistent powder like 150 mesh presents several challenges:
Overcoming these challenges necessitates selecting grinding equipment that is not only robust but also incorporates advanced grinding mechanics and classification technology.
When selecting a grinding mill for granite aggregate production targeting 150 mesh, several factors must be evaluated:
As an excellent manufacturer of ore and industrial grinding equipment, Shanghai Zenith Machinery Co., Ltd. has developed a range of mills perfectly suited for processing hard materials like granite. For the Nigerian market aiming for 150 mesh granite powder, two of our flagship products stand out: the LM Vertical Grinding Mill and the MTW Trapezium Grinding Mill.
The LM Vertical Grinding Mill is a premier choice for large-scale aggregate production. Its unique design integrates crushing, grinding, powder selection, drying, and conveying into a single unit. This integration makes it exceptionally space-efficient and reduces auxiliary equipment costs. For granite grinding, its grinding roller and plate are made from high-chromium alloy materials, offering superior resistance to abrasion. The built-in high-efficiency classifier ensures precise separation of particles, allowing reliable production of 150 mesh product. Its centralized control system facilitates easy operation and maintenance.
For a granite processing plant with substantial capacity requirements, the LM190K model is highly recommended. Its technical parameters are as follows:
| Model | Plate Diameter (mm) | Capacity (t/h) | Output Fineness (μm) | Max Feed Size (mm) | Main Motor (kW) |
|---|---|---|---|---|---|
| LM190K | 1900 | 23-68 | 170-40 (approx. 90-400 mesh) | <45 | 500 |
This model can comfortably handle granite feed and be tuned to produce a consistent 150-mesh (~100 micron) output within its capacity range, making it ideal for major infrastructure projects.
The MTW Trapezium Grinding Mill is another excellent option, particularly known for its multiple national patents, curved surface duct design, and eco-friendly features. It operates with lower noise and dust emission levels. The MTW series employs a bevel gear overall drive, advanced internal powder selection system, and a streamlined air duct, contributing to higher grinding efficiency and lower energy consumption per ton of product. Its flexibility and reliability make it a strong contender for granite grinding applications where operational efficiency and environmental considerations are paramount.
For mid-to-large scale production of 150 mesh granite powder, the MTW175G model offers an optimal balance of capacity and fineness control:
| Model | Max. Feed Size (mm) | Final Size (mm) | Capacity (t/h) | Main Motor (kW) |
|---|---|---|---|---|
| MTW175G | <40 | 1.6-0.045 (approx. 10-325 mesh) | 9.5-25 | 160 |
With its ability to produce powder as fine as 0.045mm (~325 mesh), achieving a steady 150-mesh output is well within its capability, ensuring high productivity for growing construction ventures.
The production of high-specification granite aggregate is fundamental to supporting Nigeria’s architectural and infrastructural ambitions. Selecting the right grinding technology is not merely an equipment purchase but an investment in project quality, timeline, and long-term profitability. Shanghai Zenith Machinery’s LM Vertical Grinding Mill and MTW Trapezium Grinding Mill embody the innovation, durability, and efficiency required to transform challenging granite rock into valuable, consistently fine construction aggregate. By partnering with a specialized manufacturer like Zenith, Nigerian entrepreneurs and construction firms can secure a reliable technological foundation, ensuring their aggregate supply meets the precise 150-mesh standard and contributes to building a stronger, more developed Nigeria.
