Saka Engineering Systems Private Limited
Bhosari, Pune, Maharashtra
GST No. 27AAOCS3606F1ZA
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The rotary dryer is a type of industrial dryer employed to reduce or minimize the liquid moisture content of the material it is handling by bringing it into direct contact with a heated gas. The dryer is made up of a large, rotating cylindrical tube, usually supported by concrete columns or steel beams. The dryer slopes slightly so that the discharge end is lower than the material feed end in order to convey the material through the dryer under gravity. Material to be dried enters the dryer, and as the dryer rotates, the material is lifted up by a series of internal fins lining the inner wall of the dryer. When the material gets high enough to roll back off the fins, it falls back down to the bottom of the dryer, passing through the hot gas stream as it falls. This gas stream can either be moving toward the discharge end from the feed end (known as co-current flow), or toward the feed end from the discharge end (known as counter-current flow). The gas stream can be made up of a mixture of air and combustion gases from a burner, in which case the dryer is called a direct heated dryer. Based on the configuration, rotary dryers can be classified as co-current, counter current, direct fired and indirect fired. Explanation of each configuration is given below:
Unique Features
Application
Co-Current Applications :
Wet feed in contact with the hottest drying gases supplied from an external source, where heat transfer is by convection.
Product Details:
| Capacity | 1 ton to 500 tonnes per hour |
| Automatic Grade | Semi-Automatic |
| Design | Customized |
| Brand | Saka |
| Diameter | 0. 6 to 5 m |
| Rotation Speed | Up to 25 rpm |
| Feed Rate Ranges | less than 1 ton to 500 tons per hour. |
We offer Industrial Rotary Dryers. They consist of a relatively long cylindrical shell, supported by two riding rings running on a set of rollers. They are slightly inclined from the horizontal, the slope enables the material to move from the feed to the discharge end under gravity. They are suitable for a wide range of materials of varying size and composition.
Internal lifters, or flights, are used to lift, distribute and transport the material. This produces a shower, or cascade, of wet feed material through the hot gas stream, which promotes evaporation of the moisture and breaks up lumps to produce a more uniformly dried material. The hot air is introduced either at the feed end such that it moves in the same direction as the material (co-current) or at the discharge end such that it moves in the opposite direction (counter-current).
The co-current direct-heat rotary dryer is the most common, wet material is in contact with the hot gas stream as its highest temperature, which causes rapid evaporation of surface moisture. As it progresses through the dryer, heat energy is lost to the material it is drying and it leaves the dryer at a comparatively low temperature. In co-current dryers, the initial heat transfer is high, which causes a considerable drop in temperature thus preventing overheating of the material and the dryer itself. The final dried product is discharged with the gas stream at its lowest temperature, which ensures the moisture content can be readily controlled. Counter current dryers are more suitable for material that must be dried to very low moisture contents or where the last traces of moisture are difficult to remove.
Product Details:
| Minimum Order Quantity | 1 Piece |
| Max Temperature | As per client Recommendation |
| Automatic Grade | Semi-Automatic, Automatic |
| Design | Standard, Customized |
| Rotation Speed | Up to 25 rp |
| Brand | Saka |
| Rate Ranges | less than 1 ton to 500 tons per hour. |
We offer drying equipment like Rotary Drum Dryer with counter-current principle. They are suitable for a wide range of materials of varying size and composition. The feed rate ranges from less than 1 ton to 500 tons per hour. Internal lifters, or flights, are used to lift, distribute and transport the material.
Product Details:
| Minimum Order Quantity | 1 Piece |
| Max Temperature | As per client recomendation |
| Automatic Grade | Automatic, Semi-Automatic |
| Design | Standard, Customized |
| Brand | Saka |
| Driven | Electric |
| Body Material | Cast Iron. Steel, Stainless Steel |
We offer Co Current Rotary Dryer. Wet feed in contact with the hottest drying gases from an internal burner, providing higher thermal efficiency, where heat transfer is by convection and radiation. Suitable for heavy ores, crushed rock, and stone, sand, slag, refractory materials, limestone/clay separation.
Indirectly heated rotary dryers and calciners are available for dusty, finely divided materials and low to medium temperature calcining applications. The rotary drum is partially enclosed and externally heated by a series of burners mounted in an insulated stationary chamber or jacket. Alternatively, the products of combustion from an external heater may be recirculated to increase thermal efficiency.
Product Details:
| Minimum Order Quantity | 1 Piece |
| Max Temperature | as per client recommendation |
| Automatic Grade | Automatic, Semi-Automatic |
| Design | Standard, Customized |
| Body Material | Cast Iron. Steel, Stainless Steel |
| Brand | Saka |
| Driven | Electric |
Manufactured in our state-of-the-art technologically advanced facilities, these high-quality refractory lined, Direct Fired Rotary Dryer or Direct Fired Calciners are also supplied for high-temperature applications where it is necessary to change the 'state' of the material. Since this process usually requires a long residence time, the length to diameter ratio is often in excess of 10:1. In most cases, an oil or gas burner fires directly into the discharge end of the unit. The material is heated in three ways - by radiation from the burner flame, conduction from the refractory lining and convection by contact with the hot gases.