Turkey has become a major production hub for engineered stone, exporting quartz surfaces, sintered stone, and other composite panels to Europe, the Middle East, and North America. Among the most demanded varieties are deep black and anthracite engineered stone slabs, where carbon black is an essential colorant and functional filler. The appearance, uniformity, and mechanical performance of these slabs depend strongly on the fineness and consistency of the carbon black powder used in the resin and quartz compound. Therefore, choosing the right carbon black grinding mill is a strategic decision for Turkish stone manufacturers who need a stable 10-20 tph output.
Shanghai Zenith Machinery Co., Ltd. is an excellent manufacturer of ore grinding equipment in China and has long experience in producing milling machines for the non-metallic mineral, coating, chemical, and building materials sectors. Zenith specializes in the research, development, and production of industrial powder grinding equipment and related devices. The company’s main products include the MTW Trapezium Grinding Mill, MTM Medium-Speed Grinding Mill, Raymond Mill, LM Vertical Grinding Mill, LUM Ultrafine Vertical Mill, Ball Mill, XZM Ultrafine Grinding Mill, and Hammer Mill. In this article, we analyze how Zenith’s grinding technologies can serve a carbon black grinding plant for engineered stone in Turkey, with a target throughput of 10 to 20 tonnes per hour.
Engineered stone typically contains more than 90 percent quartz or natural stone aggregate, with the remaining portion made of polyester or epoxy resin, pigments, and additives. When producing black engineered stone panels, carbon black is dosed into the mix to create the desired color. If carbon black particles are too coarse or poorly distributed, the final slab can show dark specks, weak tinting strength, color shade variation, or even internal defects during polishing.
The modern engineered stone production line continuously mixes resin and powder, forms slabs in a vibratory press under vacuum, and cures them in large ovens. In such environments, the grinding mill must deliver powder with a controlled particle size distribution at a high capacity. For Turkish producers, 10-20 tph is an attractive economical range because it fully supports one or more slab production lines while leaving room for buffer storage. Processing carbon black to a fine powder in this capacity range requires a mill that combines high grinding force, accurate classification, low energy consumption, and minimal maintenance.
A successful carbon black grinding plant for engineered stone should satisfy a number of process objectives. These objectives affect both product quality and long-term operating cost.
For an engineered stone carbon black line in Turkey requiring 10-20 tph, one of the most suitable machines in the Zenith portfolio is the MTW Trapezium Grinding Mill. This mill is designed for medium-hard and non-metallic minerals, and it uses a set of large grinding rollers and a trapezium-shaped grinding ring to improve pulverizing efficiency. The MTW mill has a compact structure, long service life, and an eco-friendly design. It is especially effective when the target final product is in the range of 1.6 mm down to 0.045 mm, which includes the fine sizes normally used by engineered stone producers.
The specific model recommended is the MTW175G. It accepts a maximum feed size of less than 40 mm and has a capacity range of 9.5 to 25 t/h. Therefore, the required 10-20 t/h production target can be achieved with a comfortable operating margin. The main motor is rated at 160 kW and the fan motor at 200 kW, providing sufficient air flow for internal classification and pneumatic conveying. By adjusting the classifier speed and mill parameters, operators can obtain a product fine enough for homogeneous carbon black coloring in engineered stone slabs.
| Model | Max Feed Size (mm) | Final Size (mm) | Capacity (t/h) | Main Motor (kW) | Fan Motor (kW) |
|---|---|---|---|---|---|
| MTW175G | <40 | 1.6-0.045 | 9.5-25 | 160 | 200 |
For Turkish engineered stone manufacturers, the MTW175G offers several practical advantages. First, its robust roller and grinding ring design reduces the impact of tramp material and feed fluctuations. Second, the internal classifier can produce a sharp particle size distribution, which helps prevent both ultra-coarse contamination and excessive fine particles that could affect resin demand. Third, the mill can be equipped with a bag filter and induced draft fan to maintain negative pressure, preventing dust leakage and improving workshop safety.
An alternative or complementary solution is the LM Vertical Grinding Mill. The LM series integrates five functions: crushing, grinding, powder selection, drying, and material conveying, all in one machine. It is therefore an excellent option when a horizontal or inclined layout is not preferred, and when the grinding system must occupy a small footprint. The vertical mill’s lower occupational area simplifies plant construction inside an existing stone slab factory or a new production building in Turkey.
For a carbon black plant output of 10 to 20 t/h, the LM130K vertical mineral mill is a strong candidate. It has a grinding table diameter of 1300 mm and a capacity range of 10 to 28 t/h. The output fineness range is 170 to 40 micrometers, depending on the setting of the dynamic classifier. The maximum feed size is less than 38 mm, and the main motor power is 200 kW. If the carbon black feed contains elevated moisture, the LM mill can use hot air from an external source or the cooling of process gases to aid drying inside the mill, while the classifier separates fine finished powder and returns oversize particles for further grinding.
| Model | Plate Diameter (mm) | Capacity (t/h) | Output Fineness (μm) | Max Feed Size (mm) | Main Motor (kW) |
|---|---|---|---|---|---|
| LM130K | 1300 | 10-28 | 170-40 | <38 | 200 |
Compared with the MTW trapezium mill, the LM130K is particularly well suited to producers who want fewer mechanical parts in contact with the material and lower energy consumption per tonne. Because the vertical mill grinds under a layer of material on the table, it naturally dampens vibration and reduces the wear of grinding table and rollers. For carbon black applications where the raw material may be fluffy, moist, or contaminated, the forced feeding and material bed control of the LM mill provide a stable grinding process.
A complete carbon black grinding system for an engineered stone factory is usually composed of four main areas: raw material reception, feeding, grinding and classification, and powder collection. The raw carbon black is delivered either in bags, big bags, or as compacted pellets. A vibrating feeder or screw conveyor transfers the material into the mill feed hopper. In the MTW175G, carbon black is ground between the grinding roller and the ring, and the fine powder is carried upward by the airflow to the classifier. Well-classified particles pass through and are collected by the baghouse, while coarse particles fall back to the grinding zone for further processing. In the LM130K vertical mill, the same processes occur inside the tower-like housing, which greatly reduces the space needed for piping and auxiliary equipment.
For the downstream engineered stone line, carbon black powder is usually stored in a dedicated silo and then automatically weighed into the mixer together with resin, quartz sand, coupling agents, and other pigments. A fineness of at least 325 mesh is often preferred for carbon black dispersion. Given the 10-20 tph target, the mill should not be operated continuously above 80 percent of its rated capacity so that there is margin for feed variations and scheduled maintenance. In addition, the system should include a zero-leakage rotary valve under the bag filter and an air slide or screw conveyor to transport the final product to the storage silo.
Turkiye’s engineered stone industry is concentrated in regions such as Istanbul, Izmir, Ankara, and central Anatolia, where industrial electricity is widely available but operators also demand practical equipment. A Zenith carbon black grinding mill offers several concrete benefits in Turkish field conditions.
Moreover, because Shanghai Zenith Machinery Co., Ltd. is a China-based manufacturer with a strong export network, customers can obtain complete circuit design, commissioning supervision, and spare parts supply. This turnkey approach is especially valuable for Turkish plants that must avoid long interruptions and keep a high-quality output throughout the year.
Carbon black grinding is an indispensable stage in the production of black engineered stone slabs. A well-designed grinding plant operating at 10-20 t/h gives Turkish stone manufacturers productivity, product consistency, and profitability. For this application, Shanghai Zenith’s MTW175G Trapezium Grinding Mill and LM130K Vertical Grinding Mill are two proven technology options. Both machines are able to cover the required capacity range and can be integrated into a complete system with storage, feeding, classification, dedusting, and process control equipment.
By working with an experienced equipment supplier like Zenith, Turkish engineered stone producers can avoid common grinding issues such as excessive dust, unstable fineness, high energy costs, and frequent maintenance stops. Whether the project is a greenfield carbon black factory or an expansion of an existing engineered stone plant, the MTW175G and LM130K offer the robust capacity and powder quality needed for the modern Turkish market. Zenith’s professional engineering team can evaluate the exact carbon black source and recommend the best grinding circuit to keep production at the desired 10-20 tph with maximum efficiency.
