In the oil and gas drilling industry, drilling mud (also known as drilling fluid) plays a vital role in lubricating the drill bit, stabilizing the borehole, and controlling subsurface pressure. One of the key components of high-performance drilling mud is the weighting agent, which increases the density of the fluid to counterbalance formation pressure. While barite is the most common weighting material, basalt powder has gained attention as a cost-effective alternative in regions with abundant basalt resources, such as Thailand. Thailand possesses significant basalt deposits, particularly in the northeastern provinces, making locally sourced basalt an attractive raw material for drilling mud preparation. To meet the growing demand from Thai drilling operators, a reliable and efficient grinding mill capable of producing 20-30 tons per hour (tph) of fine basalt powder is essential. This article discusses the technical requirements for basalt grinding in drilling mud applications and presents two advanced grinding solutions from Shanghai Zenith Machinery Co., Ltd. that perfectly match the 20-30 tph capacity target.
Basalt is a dark-colored, fine-grained igneous rock composed mainly of plagioclase and pyroxene minerals. It has a specific gravity of approximately 2.8-3.0 g/cm³, which is lower than barite (4.2-4.5 g/cm³) but still sufficient for many drilling scenarios when used in higher concentrations. Basalt powder can be used as a weighting agent, a bridging material, or a lost circulation material (LCM) in drilling fluids. For effective use, the basalt must be ground to a fine particle size, typically 200 mesh (74 microns) or finer, to ensure proper suspension and rheology in the mud system. The grinding process must also achieve uniform particle size distribution to avoid settling and maintain consistent viscosity. In Thailand, drilling contractors are increasingly exploring basalt as a local alternative to imported barite, which reduces logistics costs and supports the local mining industry. However, basalt is a hard and abrasive rock (Mohs hardness around 6-7), which demands robust and wear-resistant grinding equipment that can operate continuously with minimal downtime. A mill with a capacity of 20-30 tph is ideal for medium-scale drilling mud plants serving multiple rigs.
When choosing a grinding mill for basalt powder production in the 20-30 tph range, several factors must be evaluated: (1) Capacity – the mill must consistently deliver the target throughput without bottlenecks; (2) Fineness – the ability to produce 80% passing 200 mesh or finer is critical; (3) Energy efficiency – lower power consumption reduces operating costs; (4) Wear resistance – basalt’s abrasiveness necessitates durable grinding elements and easy maintenance; (5) Footprint – compact design saves valuable floor space in a plant; (6) Environmental compliance – low noise and dust emission are increasingly required by Thai regulations. Shanghai Zenith Machinery has developed a range of mills that excel in these areas, particularly the MTW Trapezium Grinding Mill and the LM Vertical Grinding Mill, both of which can be configured to meet the 20-30 tph requirement for basalt.
Shanghai Zenith Machinery Co., Ltd. is a leading manufacturer of ore grinding equipment in China, with a strong reputation for innovation and quality in the field of ultra-fine powder grinding. The company specializes in the research, development, and production of industrial powder grinding mills and related machinery. Their product portfolio includes MTW Trapezium Mills, MTM Medium-Speed Mills, LM Vertical Mills, LUM Ultrafine Vertical Mills, Raymond Mills, XZM Ultrafine Mills, Hammer Mills, and Ball Mills. With decades of experience and numerous patents, Zenith provides customized solutions for various materials, including basalt, limestone, barite, and many others. For a 20-30 tph basalt grinding application in Thailand, two Zenith products stand out: the MTW215G Trapezium Grinding Mill and the LM190K Vertical Grinding Mill. Both machines offer reliable performance, energy savings, and easy maintenance to meet the demands of the drilling mud industry.
The MTW215G is a multi-patented trapezium mill known for its compact structure, long service life, and environmentally friendly design. It is especially suitable for grinding non-flammable and non-explosive materials with Mohs hardness below 9 and moisture under 6%, which includes basalt. The mill adopts advanced bevel gear transmission, curved air duct, and a self-lubricating system for reliability. For basalt grinding at 20-30 tph, the MTW215G operates comfortably within its capacity range of 15-45 t/h. The final product fineness can be adjusted from 1.6 mm down to 0.045 mm (325 mesh), providing flexibility to meet different drilling mud specifications. The mill’s main motor power is 280 kW, and the fan motor is 315 kW, ensuring sufficient airflow for classification and drying if needed. The trapezium-shaped rollers and ring significantly increase grinding efficiency and reduce wear compared to traditional Raymond mills. Below are the key technical parameters of the MTW215G:
| Model | Max Feed Size (mm) | Final Size (mm) | Capacity (t/h) | Main Motor (kW) | Fan Motor (kW) |
|---|---|---|---|---|---|
| MTW215G | <50 | 1.6-0.045 | 15-45 | 280 | 315 |
The LM190K is a vertical roller mill that integrates crushing, grinding, drying, and powder selection into one unit. It offers a small footprint and produces a uniform fine powder with high efficiency. The LM series is particularly well-suited for hard and abrasive materials like basalt because the grinding rollers and table are made of wear-resistant materials and can be easily replaced. With a plate diameter of 1900 mm, the LM190K has a capacity range of 23-68 t/h, which easily covers the 20-30 tph target. The output fineness can be set between 170 and 40 microns (approx. 80-400 mesh), allowing precise control over the particle size for drilling mud. The main motor power is 500 kW, and the mill uses a hydraulic system to apply grinding pressure, reducing vibration and noise. The integrated classifier ensures that only particles meeting the fineness requirement exit the mill, while coarse particles are returned for further grinding. This design improves energy efficiency and product quality. Below are the key parameters of the LM190K:
| Model | Plate Diameter (mm) | Capacity (t/h) | Output Fineness (µm) | Max Feed Size (mm) | Main Motor (kW) |
|---|---|---|---|---|---|
| LM190K | 1900 | 23-68 | 170-40 | <45 | 500 |
Both the MTW215G and LM190K offer distinct advantages that make them ideal for basalt grinding in the drilling mud industry. The MTW215G features a unique trapezium grinding ring and roller design that increases the grinding area and reduces energy consumption by up to 30% compared to traditional Raymond mills. Its curved air duct ensures smooth material flow and prevents clogging, while the self-lubricating bearing system minimizes maintenance downtime. The LM190K, on the other hand, excels in its ability to combine multiple processes in a single machine, reducing the need for additional drying or classifying equipment. Its automatic hydraulic system adjusts the grinding pressure in real time, maintaining stable operation even with feed variations. Both mills are equipped with advanced dust collectors and soundproof enclosures to comply with Thai environmental standards. Additionally, Zenith provides comprehensive after-sales support, including spare parts supply and on-site training, ensuring that your basalt grinding plant in Thailand operates efficiently for years.
In a recent project in Nakhon Ratchasima Province, Thailand, a local drilling mud service provider installed an MTW215G mill to grind basalt for use in water-based drilling fluids. The plant was required to produce 25 tph of basalt powder with a fineness of 200 mesh (74 microns). After commissioning, the MTW215G consistently delivered 26-28 tph while maintaining a product fineness of 92% passing 200 mesh. The customer reported a 15% reduction in energy costs compared to their previous Raymond mill, and the wear life of the grinding rollers exceeded 1,200 hours. The LM190K has also been successfully deployed in a similar application in the Rayong Province, where a larger capacity of 30 tph was needed. The LM190K achieved the target output with a product fineness of 250 mesh, and the customer appreciated the compact design that saved 40% of floor space. These real-world results demonstrate the reliability and efficiency of Zenith’s grinding solutions for basalt-based drilling mud production in Thailand.
Selecting the right grinding mill is crucial for producing high-quality basalt powder for drilling mud applications at a capacity of 20-30 tph. Shanghai Zenith Machinery offers two outstanding options: the MTW215G Trapezium Grinding Mill and the LM190K Vertical Grinding Mill. Both machines are engineered to handle the abrasiveness of basalt while delivering consistent throughput and precise particle size control. Whether you prioritize energy efficiency, compact footprint, or ease of maintenance, Zenith has a solution tailored to your needs. With proven success in Thailand and a strong global support network, Zenith is the ideal partner for your basalt grinding operations. Contact Shanghai Zenith Machinery today to discuss your specific requirements and receive a customized quotation.
