In Lebanon, the expanding foundry and metal casting industry depends on a regular supply of prepared casting sand. Casting sand is not simply ordinary silica sand; it is a carefully formulated mould material that contains sand, binder, water and several functional additives. Barite powder is one of the important functional additives. Barite, chemically known as barium sulphate (BaSO4), is a dense and stable mineral. When it is milled into a fine powder, it improves mould surface density, resists metal penetration and helps foundries produce castings with clean surfaces. As a result, foundries in Lebanon and the wider Middle East region are looking for economical grinding solutions that can make barite powder at 3 to 5 tonnes per hour.
Shanghai Zenith Machinery Co., Ltd. is an excellent manufacturer of ore grinding equipment in China. The company specializes in the research, development and production of industrial powder grinding mills and related devices. Its main products include MTW Trapezium Grinding Mill, MTM Medium-Speed Grinding Mill, Ball Mill, Raymond Mill, LM Vertical Grinding Mill, LUM Ultrafine Vertical Mill, XZM Ultrafine Grinding Mill and Hammer Mill. For the 3-5 tph barite grinding project for casting sand in Lebanon, the Zenith MTW110Z Trapezium Grinding Mill is a practical and reliable recommendation.
In sand casting, molten metal is poured into a mould cavity formed in a sand mixture. If the surface of the sand mould is porous, liquid metal can enter the spaces between sand grains. This creates roughness and can make castings difficult to clean. Barite powder is used in casting sand recipes and mould coatings because its particles are dense enough to close surface openings without reacting easily with the molten metal. It also has useful refractory characteristics at high foundry temperatures. A properly ground barite flour therefore contributes to improved casting surface finish and lower reject rates in products such as valves, pump housings, automotive components and general machine parts.
For foundry coating formulations and mould sand additives, the particle size of barite must be uniform. Coarse particles can settle out of a coating or leave weak points on the mould surface. Very fine particles may create dust and reduce mixing efficiency. A practical target is around 200 to 325 mesh, which is equivalent to about 74 to 45 micrometres. The grinding mill selected for a Lebanese casting sand plant must be able to adjust its classifier so that the finished barite powder remains inside this target range during continuous operation.
Barite users in Lebanon may receive lump ore from domestic sources or from suppliers in neighbouring countries. Before feeding the mill, the ore should be reduced by a crusher to a size smaller than 30 mm. It should be reasonably dry, because excessive surface moisture can reduce grinding capacity and create blockages in the feeding system. A metal detector and a vibrating screen can be installed before the mill to remove tramp metal and oversized pieces. If the customer requires a complete installation, Zenith can design a small crushing and feeding line together with the barite grinding mill.
Floor area is also an important factor in Lebanese foundries, which are often located in crowded industrial zones where space is expensive. The MTW110Z has a compact structure for a medium-capacity grinding mill. It does not need an extremely tall building, and its operation can be supervised from a small control room. This makes it easier to install in an existing workshop or inside a new compact production hall.
When choosing a barite grinding mill for casting sand, the project owner should evaluate the following points:
These criteria point to the Zenith MTW series. In particular, the MTW110Z model covers the 3-5 tph requirement very well. It is a product of Zenith’s mature MTW Trapezium Grinding Mill technology, which is recognised for compact structure, long service life and eco-friendly operation.
The Zenith MTW110Z is a mid-sized trapezium grinding mill designed for processing minerals such as barite, limestone, gypsum, calcite, dolomite, clay and coal. It uses a trapezium-shaped roller and ring profile that gives stable grinding pressure and improves powder collecting efficiency. The mill has an intelligent electrical control system, and the main motor is rated at 55 kW. A separate 55 kW fan motor provides the airflow needed for classification and pneumatic conveying. With the correct classifier speed and feeding rate, the MTW110Z can produce barite powder with a fineness from about 1.6 mm down to 0.045 mm, which covers the foundry and casting sand range.
For Lebanon, the MTW110Z is especially suitable because its capacity range of 3-10 t/h gives a comfortable margin for a 3-5 t/h production target. The mill is large enough to support future growth, yet small enough to keep initial capital investment within a practical level for a single casting sand plant.
| Model | Maximum feed size (mm) | Final powder size (mm) | Capacity (t/h) | Main motor power (kW) | Fan motor power (kW) |
|---|---|---|---|---|---|
| MTW110Z | <30 | 1.6-0.045 | 3-10 | 55 | 55 |
The MTW110Z offers enough throughput even when the feed size, moisture or mineral composition changes. In a typical Lebanese foundry sand operation, the mill can be set to deliver approximately 4 t/h of barite powder at around 200 to 325 mesh. Running at this level leaves spare capacity for maintenance stops and seasonal demand increases.
The MTW110Z works as a ring-roller mill with an internal classifier. Crushed barite is fed into the main grinding chamber through a vibratory feeder. The grinding rollers swing outward under centrifugal force and press the material against the grinding ring. In this way the barite is crushed and sheared into powder. An air stream generated by the fan carries the fine powder upward to the classifier. Coarse particles are rejected by the classifier and returned to the grinding zone for further size reduction. Particles that meet the required fineness pass through the classifier and are collected by a cyclone and bag filter. The negative pressure arrangement controls dust and makes the production line safe and clean.
For a casting sand plant, this closed-loop system is valuable because barite powder is a dry and dusty material. The MTW110Z can be supplied as a complete grinding line with feeders, conveying equipment, cyclones, bag filters and a control cabinet. This allows the foundry to receive a ready-to-run production unit rather than assembling pieces of equipment from different suppliers.
At an average output of 4 t/h, one 8-hour shift can produce about 32 tonnes of barite powder. If the plant runs two shifts, this number can rise to roughly 64 tonnes per day. Since casting sand additives are normally used in small percentages by weight of the total sand mix, this daily output can support thousands of tonnes of prepared moulding sand. Therefore, an MTW110Z is a cost-effective solution for a regional barite powder supplier that needs to serve several foundries in Lebanon.
The main motor power of 55 kW is moderate for a mill that can reach 10 t/h at its maximum. The MTW series is designed with high grinding efficiency and lower energy consumption compared with older pendulum mills. When combined with a high-efficiency fan and classifier, the system consumes less energy per tonne of barite powder. This is an important advantage in Lebanon, where electricity tariffs and fuel costs for generators can be significant for industrial users.
Maintenance is another important part of operating economics. The MTW series uses carefully ground and balanced grinding rollers, durable bearings and an optimised lubrication arrangement. A regular maintenance schedule with periodic inspection of the grinding ring, roller shells and classifier blades is enough to keep the machine in good condition. The machine design also supports easy access to internal parts, shortening downtime during service.
Although the MTW110Z is the recommended choice for this 3-5 tph casting sand application, Zenith also produces other suitable machines. For example, the MTM100 Medium-Speed Grinding Mill has an output range of about 3-8 t/h and a main unit motor power of 37 kW. It is an excellent replacement for older Raymond mills in medium-scale powder plants. The Zenith Raymond Mill YGM9517, with four rollers, a maximum feed size of 25 mm and a capacity of 2.1-8 t/h, can also meet the tonnage requirement. The final decision should be based on the size of the planned plant, the available electrical power supply and the investment budget. Zenith’s engineers can help Lebanese customers compare the MTW110Z, MTM100 and YGM9517 before preparing the final plant layout.
For this specific project, however, the MTW110Z is the best balance of capacity, fineness stability, product quality and operating cost. It allows the Lebanese sand preparation plant to convert raw barite into a valuable foundry material using a single dependable machine. It also gives the operator flexibility to adjust product fineness for different casting alloys, mould systems and casting sizes.
Barite grinding for casting sand is a concentrated and practical business opportunity in Lebanon. A target capacity of 3-5 t/h requires a mill that is neither too large nor too small for the local market. The Zenith MTW110Z Trapezium Grinding Mill meets this requirement by offering 3-10 t/h capacity, variable product fineness from 1.6 mm to 0.045 mm, and compact construction that suits an industrial foundry building. With its maximum feed size of less than 30 mm, the MTW110Z can be fed easily after primary crushing, and its 55 kW main motor and 55 kW fan motor offer a reasonable installed power level for continuous production.
Shanghai Zenith Machinery Co., Ltd. has strong experience in ore grinding equipment and is able to supply a complete barite processing system with reliable after-sales support. For Lebanese foundries and casting sand suppliers that need a stable 3-5 t/h barite powder line, the MTW110Z provides a professional, energy-efficient and future-proof solution.
