A 100 TPD gypsum powder production line is generally suitable for small and medium-scale gypsum powder projects. The final configuration depends on whether the plant will produce ground natural gypsum powder or calcined gypsum powder for products such as gypsum plaster, construction gypsum, Plaster of Paris and other gypsum-based materials.

At this plant scale, a balanced process is more important than simply selecting a grinding mill. The crushing section, calcination section when required, grinding system, classifier, dust collector, conveyor, storage bin and packing equipment should be sized to work together. A stable material flow from raw gypsum receiving to finished powder packing helps maintain continuous operation.

What Does 100 TPD Mean?

100 TPD means a nominal production target of 100 tonnes of finished gypsum powder per day. The actual hourly output depends on the daily operating schedule, maintenance time, raw material condition, target fineness and process arrangement.

For example, the required hourly production rate changes when the same daily output is planned over different operating hours. A 100 TPD project operating for fewer hours per day needs a higher hourly process rate than a project operating for more hours per day.

These figures describe the average finished-product rate based on the daily target. Actual equipment selection should allow for material variation, planned maintenance, system losses, production scheduling and the required powder fineness.

Choose the Right Production Route

The first decision for a 100 TPD gypsum powder plant is whether calcination is required. The answer depends on the final product.

A grinding-only line does not include thermal conversion. It is suitable when the required product is natural gypsum powder. A calcination and grinding line includes a controlled thermal stage before the grinding system, producing calcined gypsum powder for applications that require it.

Typical 100 TPD Gypsum Powder Process

A 100 TPD gypsum powder production line can be arranged in the following sequence:

1. Raw gypsum receiving and storage

2. Controlled feeding and feed preparation

3. Crushing to the required feed size

4. Crushed gypsum storage or buffer bin

5. Calcination when calcined gypsum is required

6. Cooling, conveying or intermediate storage after calcination

7. Grinding to the target powder fineness

8. Classification for particle-size control

9. Dust collection and air handling

10. Finished powder conveying and storage

11. Bag packing or bulk loading

The layout may be simplified for a grinding-only project because the calcination, cooling and intermediate storage sections are not required. However, crushing, grinding, classification, dust collection and packing should still be matched to the required output.

Raw Gypsum Receiving and Storage

Raw gypsum may be delivered as natural gypsum rock, industrial gypsum or another gypsum-bearing material. Before the material enters the main process, it should be checked for lump size, free moisture, impurities and storage condition.

For a 100 TPD line, raw material storage should provide enough buffer capacity to maintain stable production between deliveries. The amount of storage required depends on the delivery schedule, plant operating hours and variation in raw material supply.

Raw Material Information Needed Before Equipment Selection

• Type and source of raw gypsum.

• Maximum incoming gypsum lump size.

• Free moisture content and seasonal variation.

• Presence of clay, soil, metal or other foreign materials.

• Required finished powder type.

• Target powder fineness and particle-size distribution.

• Planned daily operating hours.

• Required packing method and finished-product storage capacity.

Crushing Equipment for a 100 TPD Line

Crushing reduces raw gypsum lumps to a size suitable for calcination equipment or the grinding mill. The crushing section should provide a stable supply of material at a rate that matches the downstream process.

A typical crushing arrangement includes a receiving hopper, feeder, crusher, belt conveyor, magnetic separator, screen where required and crushed-material storage bin. The crusher discharge size should match the feed requirement of the selected mill or calcination system.

At a 100 TPD scale, the crusher should not be selected only by average daily output. It should also account for the required hourly feed rate, raw gypsum size, operating schedule and the need for a stable material buffer before the next process stage.

Calcination for a 100 TPD Gypsum Powder Plant

Calcination is required when the final product is calcined gypsum powder. Natural gypsum is mainly calcium sulfate dihydrate, CaSO₄·2H₂O. Controlled heating removes part of the chemically combined water and produces calcined gypsum, commonly including calcium sulfate hemihydrate, CaSO₄·½H₂O.

For a 100 TPD calcination and grinding line, the thermal section should be selected according to raw gypsum properties, planned operating hours, required finished product and the capacity of the downstream grinding system. The calcination equipment should provide a stable discharge of material to avoid fluctuations in mill feeding.

Rotary Kiln Calcination

A rotary kiln can be integrated into a 100 TPD calcination and grinding line. The kiln is a rotating, slightly inclined cylinder through which prepared gypsum moves gradually while receiving controlled heat.

Crushed gypsum enters at the kiln feed end. The rotation and slope of the kiln move the material toward the discharge end. During this movement, part of the chemically combined water is removed from the raw gypsum. The calcined material is then transferred to cooling equipment, storage or the downstream grinding system.

Calcination Conditions to Control

• Crushed gypsum feed size.

• Feed rate entering the thermal section.

• Raw material free moisture.

• Thermal condition and material residence time.

• Consistency of kiln discharge.

• Airflow and dust collection performance.

• Material transfer condition after calcination.

Cooling and Intermediate Storage

After calcination, gypsum should be transferred to the grinding system under controlled conditions. The material may be cooled, moved through enclosed conveyors or stored temporarily before grinding.

Intermediate storage is useful in a 100 TPD line because it provides a buffer between calcination and grinding. It helps maintain stable mill feeding when the upstream thermal section or downstream packing system experiences short-term variation.

The storage bin, hopper and conveyor design should match the flow characteristics of calcined gypsum. Material buildup, unstable discharge or unnecessary moisture exposure can affect the grinding process and finished powder consistency.

Grinding Equipment for a 100 TPD Line

Grinding equipment is selected according to the required hourly output, target fineness, material condition and final application. For a 100 TPD plant, the mill should be matched to the actual operating schedule rather than selected only by the nominal daily total.

The grinding system normally includes a feeder, mill, classifier, blower or air system, dust collector, powder conveyor and finished-product storage. All components should be sized to support the required production rate.

R Raymond Mill

An R Raymond mill can be considered for a 100 TPD project producing conventional gypsum powder where the hourly output and target fineness fall within a moderate operating range. It can be used for prepared natural gypsum in a grinding-only line or for calcined gypsum after the thermal stage.

The final configuration should include stable feeding, classification, dust collection and powder storage. The actual suitability depends on feed size, moisture, powder requirement and planned operating hours.

MTW European Grinding Mill

An MTW European grinding mill is suitable for conventional industrial gypsum powder production with a broad range of fineness requirements. It can be selected for a 100 TPD grinding-only line or as part of a calcination and grinding plant.

For this scale of project, the mill can be integrated with controlled feeding, a classifier, air handling, dust collection, powder conveying and finished-product storage. The system should be configured according to the required finished powder condition.

LM Vertical Grinding Mill

An LM vertical grinding mill can be considered when the 100 TPD line is designed for stable continuous operation and an integrated process arrangement. It is suitable for layouts where crushing or calcination, material storage, grinding, classification, dust collection and product handling are coordinated.

The appropriateness of an LM vertical grinding mill depends on the actual hourly capacity requirement, target fineness, raw material condition, plant layout and future expansion plan.

LUM Ultrafine Vertical Mill

A LUM ultrafine vertical mill can be considered when the 100 TPD project requires finer gypsum powder and closer particle-size control. It is suitable for applications where the required finished powder is finer than conventional gypsum powder grades.

Fine powder processing requires more attention to classification. The mill and classifier should operate together so that qualified fine particles are collected while coarse particles return for further grinding.

Classification and Finished Powder Fineness

Classification controls the particle size of the final gypsum powder. After grinding, the classifier separates material that meets the target powder condition from particles that remain too coarse. Coarse material returns for further grinding, while qualified powder moves to the collection system.

For a 100 TPD line, classifier capacity must match the mill output. If the classifier cannot handle the circulating material flow, powder fineness may become unstable or finished-product output may decrease.

Dust Collection and Air System

Dust collection is required at crushing, calcination, cooling, grinding, classification, conveying and packing points. Fine gypsum particles should be recovered to reduce material loss and maintain controlled plant operation.

The dust collection system can include hoods, ducts, filters, fans, discharge equipment and sealed transfer points. In the grinding section, airflow also supports powder movement and classification. A change in fan operation, filter condition or duct resistance can influence the final powder condition.

For a 100 TPD plant, dust collection equipment should be matched to the connected process sections. A filter or fan selected only for one machine may not provide adequate airflow when all dust-generating points are operating together.

Finished Powder Storage and Packing

Finished gypsum powder is transferred from the collection system to a storage bin or silo before packing. The storage section provides a buffer between powder production and packing. It should have enough capacity to allow the grinding system to operate smoothly while bags are filled or bulk-loading equipment is used.

Packing equipment may include valve-bag packers, open-mouth bagging systems, weighing equipment, conveyors and bulk-loading arrangements. The selected packing method depends on the final product, bag size, delivery form and local handling requirements.

For a 100 TPD line, the packing section should be capable of handling the finished powder at the required rate. If packing capacity is too low, finished-product storage can fill up quickly and reduce the operating time of the grinding system.

Typical Equipment Configuration

Plant Layout Considerations

A 100 TPD gypsum powder plant should be arranged to allow clear material flow from raw gypsum receiving to finished powder packing. The layout should reduce unnecessary transfer points, provide access for maintenance and include enough storage between major process sections.

Vertical space is often important because grinding mills, classifiers, bucket elevators, storage bins and dust collectors may require different installation heights. The layout should also consider truck unloading, raw material storage, finished-product dispatch, power supply, dust collector access and safe operating space.

• Keep raw gypsum receiving separate from finished powder storage where practical.

• Provide a buffer bin between crushing and calcination or grinding.

• Provide intermediate storage after calcination when thermal processing is included.

• Allow sufficient access for crusher, mill, classifier, fan and filter maintenance.

• Use enclosed conveyors and sealed transfer points to reduce dust leakage.

• Match finished-powder silo capacity to packing and loading requirements.

Key Design Checklist

1. Confirm whether the finished product is natural gypsum powder or calcined gypsum powder.

2. Define the required 100 TPD output and planned operating hours.

3. Determine the required average hourly powder production rate.

4. Check raw gypsum source, feed size, moisture and impurity condition.

5. Select crushing equipment that provides a stable feed for the next stage.

6. Include calcination equipment when the final product requires calcined gypsum.

7. Select R Raymond, MTW European, LM vertical or LUM ultrafine vertical grinding equipment according to capacity and powder fineness.

8. Match classifier, dust collector, conveyors and storage bins to mill output.

9. Provide enough finished-product storage and packing capacity.

10. Confirm plant layout, power supply, storage space and maintenance access.

Conclusion

A 100 TPD gypsum powder production line can be configured as a compact grinding-only plant or as a complete calcination and grinding line. The correct route depends on whether the final product requires natural gypsum powder or calcined gypsum powder.

For stable production, raw material receiving, crushing, calcination when required, cooling, grinding, classification, dust collection, storage and packing should be designed as one connected system. R Raymond mills, MTW European grinding mills, LM vertical grinding mills and LUM ultrafine vertical mills can be selected according to the required hourly output, target fineness, raw material condition and final application.