Equipment Purchase List for a High-Calcium Stone Grinding Plant
2025-10-17 13:29:10
Below is the equipment purchasing list for a high-calcium stone (also known as limestone) grinding plant prepared for the Vietnamese market. The list is based on a typical medium-scale project with a target product of 80-400 mesh building material powder, and is presented in professional detail.
Equipment purchasing list for a limestone (CaCO₃) powder grinding plant in Vietnam
Dear valued customer,
Below is the recommended equipment list for a complete limestone (calcium carbonate, CaCO₃) grinding plant with a capacity of 5-8 t/h and a finished product fineness of 80-400 mesh, serving the building materials, lime and putty powder industries, among others.
Process flow diagram and equipment list
Detailed equipment list
| No. | Equipment name | Recommended model / type | Function and technical description |
|---|---|---|---|
| 1 | Vibrating feeder | Vibrating Feeder (GZD / ZSW series) | Feeds raw limestone into the jaw crusher steadily and continuously, ensuring stable operation. |
| 2 | Jaw crusher | Jaw Crusher (PE/PEX series) | Performs primary crushing, breaking large limestone (≤500 mm) down to ≤50 mm, producing a suitable size for the main mill. |
| 3 | Bucket elevator | Bucket Elevator (TH / NE series) | Conveys the coarsely crushed material vertically up to the raw material silo. |
| 4 | Raw material silo and feeder | Steel silo + electromagnetic vibrating feeder | Stores the material and provides stable feeding to the main mill. |
| 5 | Main mill (the heart of the plant) | Raymond mill (for example 4R3216, 5R4128) or vertical roller mill | The most important piece of equipment, using the roller and centrifugal force principle to grind limestone into fine powder. It is the most cost- and energy-efficient choice for 80-400 mesh fineness. |
| 6 | Classifier (powder separator) | Turbo classifier / powder separator | Adjusts the product fineness. Allows fineness to be customised between 80 and 400 mesh by changing the rotation speed. Coarse particles are returned to the mill for re-grinding. |
| 7 | Powder collection equipment (dust collector) | Pulse jet baghouse dust collector (PPC / DMC series) | Mandatory environmental equipment. Recovers more than 99.9% of the finished powder, keeping the plant clean and complying with emission standards. |
| 8 | Induced draft fan | High-pressure centrifugal fan (9-19 / 9-26 series) | Generates the air flow required to convey the fine powder through the entire system. Fan performance directly affects output and fineness. |
| 9 | Screw conveyor | Screw conveyor | Conveys the finished powder from the collection equipment to the finished product silo. |
| 10 | Finished product silo | Finished product silo | Stores the finished powder before packing, ensuring continuous operation of the line. |
| 11 | Automatic packing machine | Automatic packing machine (for valve bags / big bags) | Automatically packs the finished powder into bags (25 kg / 50 kg) or big bags (1 tonne), improving efficiency and hygiene. |
| 12 | Central control cabinet | Central control cabinet (PLC) | Centralised control of the entire line. Enables "one-button" operation, displays fault alarms and ensures safety. |
Important technical notes
- Wear-resistant materials: Parts such as the rollers and grinding ring of the main mill must be made of high-chromium alloy to resist wear, extend service life and reduce maintenance costs.
- Cooling system (optional): If the ambient temperature is high or the capacity is large, a cooling system for the gearbox and the mill oil should be considered.
- Technical service: The contract should include installation guidance, commissioning and operator training from the equipment supplier. This is very important for the success of the project.
Recommendation: We suggest you provide limestone samples to reputable suppliers (such as Guilin Hongcheng and Liming Heavy Industry) so that they can carry out a free grinding test. Based on the test results, they will provide the most accurate and optimised equipment list and quotation for your specific requirements.
