1.5–2.5 T/H Cotton Stalk Hammer Mill in Turkmenistan

Why Cotton Stalks Need Two-Stage Size Reduction

Cotton stalks cannot be fed into a fine hammer mill directly as whole field stalks. They are long, woody and irregular, and branches can bridge at the inlet or create severe load fluctuations if the upstream material is not controlled. The customer's existing chipper therefore performs the first stage of size reduction before the SFSP66×80 begins fine grinding.

After collection, stalks are inspected and excessive soil, stones, wire and other foreign material are removed. The chipper then reduces the stalks to approximately 20–40 mm pieces. This size is short enough for controlled hammer-mill feeding but still much coarser than the customer's required final product.

The SFSP66×80 completes the second stage, reducing the prepared material to approximately 4–6 mm. This creates a much more uniform fiber fraction for downstream substrate preparation and also makes conveying, blending and metering easier than handling long chopped stalk pieces.

SFSP66×80 Configuration and Grinding Capacity

The 1.5–2.5 T/H range is deliberately linked to the actual cotton-stalk duty rather than copied from grain-grinding capacity. The same SFSP66×80 can process grain at a much higher rate because grain is denser and easier to feed. Cotton stalk occupies more volume per tonne, contains long fibers and requires more work to pass a fine screen.

When the customer operates with a coarser screen and clean, evenly chopped stalks, throughput can move toward the upper end of the range. When producing approximately 4–6 mm material or handling more difficult stalks, practical output can move toward the lower end.

Mary Provides a Real Cotton Stalk Resource Base

Mary is one of Turkmenistan's major cotton-growing regions, making cotton stalk collection a realistic local raw-material scenario. The customer works with surrounding agricultural areas rather than claiming that tens of thousands of tonnes of stalks are physically generated by one cotton gin.

Raw-material availability also needs to be separated from recoverable volume. Not every tonne of field stalk can economically be collected. Part of the material may remain in the field, be used locally or contain too much soil and foreign matter for efficient grinding. The hammer mill is therefore sized around the quantity that can actually be collected, dried and delivered to the processing site.

Gin trash is handled separately. Leaves, burrs, short sticks, immature bolls and other residues removed during cotton processing have a different bulk density and contamination profile from field stalks. They are not automatically mixed into this project's primary cotton-stalk grinding stream.

Soil and Sand Matter More Than the Cotton Variety

A major wear issue with cotton stalk does not come only from the plant fiber itself. Field-collected stalks can carry soil, sand and mineral contamination, particularly when harvesting and collection take place close to the ground. These abrasive contaminants accelerate wear on hammers and screens and can reduce grinding efficiency over time.

The customer therefore places emphasis on cleaning before fine grinding. Magnetic separation protects against ferrous material, while stones and excessive soil are removed as far upstream as practical. A wear-resistant hammer configuration can also be selected for this application, but RICHI does not promise a fixed hammer life because wear depends strongly on contamination level, screen size and total processed tonnage.

The operator monitors hammer edges, screen condition, vibration and motor load rather than replacing wear parts after an arbitrary number of hours.

Moisture Must Be Controlled Before Fine Grinding

The SFSP66×80 crusher machine is used on dry cotton stalk rather than freshly harvested green material. For this project, the normal grinding condition is approximately 10–15% moisture. Material significantly above the intended range can become tougher to fracture, reduce screen throughput and increase the risk of buildup inside the grinding chamber.

Moisture is therefore checked before the stalks enter fine grinding. The customer does not install a dryer simply because a hammer mill is present; drying is only required when collected stalks exceed the acceptable processing range. Material already field-dried and properly stored can proceed through chipping and grinding without unnecessary thermal processing.

4–6 mm Material for Mushroom Substrate Preparation

The ground cotton stalk is supplied as a prepared fiber ingredient for mushroom-substrate production. The approximately 4–6 mm target gives the downstream producer a more consistent material for blending and moisture adjustment than long stalk fragments.

The hammer mill does not produce a finished mushroom substrate by itself. After grinding, the substrate producer still needs to formulate the growing medium, adjust moisture and carry out the appropriate biological or thermal preparation required by the mushroom production process. Cotton stalk particle size is only one part of that downstream system.

This distinction keeps the machine's function clear: the SFSP66×80 controls physical size. It does not guarantee mushroom yield, biological performance or substrate sterilization.

Dust Collection Is Part of Cotton Stalk Grinding

Dry cotton stalk grinding creates fine fibrous dust, particularly when operating with smaller screen openings. The customer therefore combines the hammer mill with aspiration and dust collection rather than discharging ground stalk into an open work area.

A cyclone can perform primary material-air separation, while a suitable filtration system handles the finer suspended fraction where required by the plant design. RICHI does not assign a universal 99% collection efficiency without the actual filter specification, air volume and dust-loading data.

Correct aspiration also supports hammer-mill performance. Airflow helps move particles through the screen and away from the grinding chamber. Poor aspiration can increase internal recirculation and reduce the practical 1.5–2.5 T/H output.

Why the Customer Bought Only the Hammer Mill

The project is a single-machine retrofit because coarse size reduction was already available. The existing chipper produces approximately 20–40 mm stalk pieces, while the new SFSP66×80 provides the missing fine-grinding stage. Upstream storage and basic material handling are also retained where their capacities remain adequate.

This prevents unnecessary duplication of equipment and keeps investment focused on the actual bottleneck. If the customer later increases raw-material collection, RICHI would first check the chipper, feeder, hammer mill, dust system and downstream handling capacities before recommending another grinder.

Multimodal Delivery to Turkmenbashi and Mary

The Cotton Stalk Hammer Mill in Turkmenistan is prepared for export from Qingdao, China, with Turkmenbashi International Seaport used as the Caspian entry point before inland transport to the Mary region. Because Turkmenistan is located on the landlocked Caspian Sea, equipment cannot travel directly by ocean vessel from Qingdao to Turkmenbashi.

The shipment therefore requires a multimodal route arranged through the freight forwarder, combining international container transport with a Caspian feeder connection and subsequent road or rail movement. Turkmenbashi has container and general-cargo handling facilities suitable for imported industrial equipment, after which the machine can continue inland toward Mary.

A 1.5–2.5 T/H Cotton Stalk Hammer Mill in Turkmenistan

This Cotton Stalk Hammer Mill in Turkmenistan project uses one SFSP66×80 with a 75 kW main motor to process dry cotton stalk collected from agricultural areas around Mary. The stalks are first cleaned and chopped to approximately 20–40 mm, then ground to approximately 4–6 mm at a project working capacity of around 1.5–2.5 T/H.

For another cotton-processing or agricultural company selecting a hammer mill, RICHI Machinery needs the stalk moisture, collection method, soil and sand content, percentage of woody stem, pre-chopped size, required final particle range, target T/H, operating hours and existing chipper and dust-control equipment. These parameters determine whether the SFSP66×80 is correctly matched to the material or whether another grinding configuration is required.