2-3T/H Silage Grass Rotary Dryer in Pakistan

Why The Customer Decided To Purchase A Single Rotary Dryer

Unlike large industrial investors building full pellet plants or feed mills, this customer had a very practical problem to solve. Fresh-cut silage grass in Sri Lanka contains high moisture, especially after mechanical harvesting during humid weather. Even after partial field wilting, moisture levels frequently remained between 55% and 70%, which was too high for stable long-distance transport and commercial forage storage.

The customer originally tested several local drying solutions, including concrete floor drying and simple hot-air chambers, but none of them could handle continuous daily processing during rainy weeks. After comparing several systems, the customer specifically searched for a silage grass rotary dryer in Sri Lanka that could operate continuously, handle fibrous materials smoothly, and fit into an already limited workshop layout.

The final goal was not simply “drying grass.” The customer wanted to achieve several operational improvements:

1. Reduce forage spoilage during wet months
2. Improve consistency of silage grass supplied to dairy farms
3. Lower transportation costs by reducing water weight
4. Extend storage time for processed forage materials
5. Stabilize raw material moisture before further forage pellet processing

This is also why the client selected a standalone rotary dryer rather than investing immediately in a complete forage pellet production line. The drying stage was the biggest bottleneck in the existing operation.

Local Agricultural Conditions Behind This Project

Sri Lanka’s dairy sector has been pushing for higher local feed production in recent years. Imported feed prices increased significantly, while local cattle farms started relying more on domestically produced forage crops such as napier grass, maize silage, hybrid grass, and legume mixtures.

However, forage handling in tropical climates creates major moisture management problems. In areas with frequent rainfall and high humidity, silage grass often absorbs moisture again even after field drying. This reduces nutritional quality and creates fungal contamination risks.

The customer in this project mainly processes:

• Elephant grass
• Hybrid napier grass
• Maize silage residues
• Guinea grass
• Mixed forage stems and leaves

These materials are supplied to medium-sized dairy farms and livestock cooperatives. Part of the dried forage is also used as raw material for compressed forage blocks and grass pellets for cattle feeding applications.

Because of this, the customer needed a heavy-duty biomass rotary dryer capable of handling fibrous agricultural materials without frequent clogging. Standard grain dryers were unsuitable for this type of long-fiber forage material.

Equipment Configuration For This Silage Grass Rotary Dryer in Sri Lanka

After evaluating the customer’s daily throughput requirements, workshop size, fuel availability, and power conditions, RICHI engineers recommended the following rotary drying solution.

The selected model was:

Rotary Dryer Model: φ1.5×15

This model matched the customer’s medium-scale forage processing capacity while remaining energy efficient for seasonal agricultural operation.

Main Technical Parameters

The customer selected a biomass heating solution because coconut shell and small wood offcuts are widely available locally. This significantly reduced fuel operating costs compared with diesel heating systems.

How The Rotary Drum Dryer Was Integrated Into The Existing Process

One important aspect of this project was that the customer did not want a complicated reconstruction of the existing forage yard. The drying system therefore had to fit into the established workflow.

Fresh forage arrives daily from contracted grass growers. After preliminary chopping, the material enters the rotary drum dryer through a controlled feeding conveyor. Inside the drum, the lifting plates continuously scatter and rotate the forage material through high-temperature airflow.

Unlike direct open-air drying, the silage grass rotary dryer in Sri Lanka provides controlled moisture reduction with much more stable final quality. The drying temperature is carefully managed so that the forage does not scorch or lose excessive nutritional value.

After drying, the material is either:

• Packed directly for cattle feed distribution
• Stored for silage blending
• Sent to a small forage pellet press
• Used in compressed roughage block production

This flexibility was another reason the customer selected a rotary dryer rather than a specialized single-purpose drying system.

Why Rotary Dryers Are Becoming Popular In Sri Lanka’s Livestock Sector

Over the last few years, more forage contractors and feed processors have started looking for rotary dryer machines in Sri Lanka because weather conditions are becoming less predictable. Traditional drying methods are increasingly difficult during extended rainy periods.

Compared with fixed chamber dryers, rotary drum dryers offer several operational advantages:

• Continuous operation
• Better handling of fibrous biomass
• Lower maintenance frequency
• Uniform moisture reduction
• Stable throughput
• Lower labor requirements

For forage applications specifically, rotary dryers can process many materials beyond silage grass. In Sri Lanka, similar biomass rotary dryers are also used for:

• Rice husk drying
• Coconut coir drying
• Sawdust moisture reduction
• Wood chip drying
• Organic fertilizer drying
• Tea waste drying
• Cassava residue drying

Because of this versatility, many customers consider rotary drum dryers a long-term infrastructure investment rather than a single-purpose machine.

Technical Discussions Before The Order Was Confirmed

Before production started, RICHI engineers spent several weeks communicating with the customer about material characteristics and operating conditions. The customer initially worried that grass fibers might wrap inside the drum or create uneven drying zones.

To address this, detailed material analysis was carried out based on:

• Average grass fiber length
• Initial moisture variation
• Seasonal humidity changes
• Daily feeding fluctuations
• Biomass fuel availability

RICHI also adjusted the internal lifting plate structure to improve movement of lightweight forage material inside the drum. This customization became one of the reasons the customer finally decided to proceed with the order.

Additionally, airflow calculations and combustion matching were optimized specifically for tropical forage applications rather than standard wood sawdust drying.

Shipping Details For The Project

The complete silage grass rotary dryer in Sri Lanka was shipped from Qingdao Port.

The destination port for this project was:

Port of Colombo

Because Colombo is Sri Lanka’s primary industrial import hub, it offered the most efficient logistics arrangement for oversized rotary drying equipment and auxiliary components.

Installation And Startup Experience

After the equipment arrived, installation work moved relatively quickly because the customer already had a prepared foundation and existing workshop utilities.

RICHI Machinery provided:

• Layout drawings
• Electrical guidance
• Dryer operation training
• Burner adjustment support
• Moisture testing recommendations
• Maintenance planning assistance

During the initial startup phase, the customer tested several different forage mixtures to determine the best drying parameters. Elephant grass required slower feeding speeds because of its thicker stem structure, while guinea grass could be processed at higher throughput.

Within the first month, the system reached stable operation and significantly reduced weather-related storage losses.

Customer Feedback After Several Months Of Operation

According to the customer, the biggest improvement was operational predictability. Before installing the rotary dryer, forage quality depended heavily on weather conditions. Now the business can maintain more stable supply contracts with dairy farms throughout the year.

The customer especially mentioned three points during follow-up communication:

“The moisture consistency became much better than expected.”

“Transportation costs dropped because wet grass weight was reduced.”

“The rotary dryer runs more steadily than the older local equipment previously tested.”

The customer also appreciated that RICHI engineers did not simply recommend the largest machine available. Instead, the equipment was matched carefully to actual production requirements and fuel conditions.

Expanding Interest In Grass Drying Equipment

This project has also attracted attention from nearby livestock operators. In many tropical agricultural regions, interest in forage drying systems is growing quickly because livestock farms are under pressure to improve feed preservation and reduce dependence on imported feed materials.

As a result, search interest for terms such as:

• silage grass rotary dryer in Sri Lanka
• forage rotary dryer
• biomass rotary dryer machine
• grass drying machine
• rotary drum dryer for forage
• industrial grass dryer
• biomass drum dryer
• forage drying equipment
• silage dryer machine
• rotary dryer for cattle feed

continues to increase among agricultural investors looking for more stable forage processing solutions.

For customers dealing with high-moisture agricultural materials, a properly configured rotary dryer often becomes one of the most important machines in the entire processing chain.