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The Slurry & Sludge Dryer is a rotary dryer that specializes in drying various slurries, including slime, which can be called a slime dryer. In addition, it is used for the drying of sludge, metallic and non-metallic ores, clays in the cement industry, etc. The slurry dryer uses a unique scattering device that disperses the bonded slurry and enters the drying process.
A slurry dryer is industrial equipment specifically designed to remove liquid (usually water) from a pumpable mixture of fine solid particles suspended in that liquid. It transforms the wet slurry into a dried solid product like powder, granules, or cake.
Slurries come in many forms across industries – mineral concentrates, coal fines, tailings, clays, chemical precipitates, wastewater sludge. Drying them is often essential for further use or disposal. As ZONEDING, we build dryers to handle these challenging materials.
Wet sludge is usually 80% water. This means when you pay for a truck to take it away, you are mostly paying to transport water. Water has no value in a landfill, but it adds massive weight to the truck. Transportation companies charge by the ton. So, you are literally throwing your profits out the window by moving wet “mud.” This is a huge problem for any Municipal sewage sludge drying plant. If you remove that water at your site, you save 80% of your shipping costs.
ZONEDING helps you solve this math problem. We build machines that take that 80% water and turn it into 10% or 20% moisture. This is called Sludge Volume Reduction. After drying, one truck can carry the same amount of waste that used to take five trucks. Also, many landfills charge a “wet waste” fee because wet sludge is hard for them to manage. Dry sludge is much cheaper to dump. Some mines use our tech like they use a Jaw Crusher. They process the waste immediately to keep the site clean and the costs low. It is a simple way to increase your monthly profit.
Slurry drying is vital to reduce transport costs, meet downstream process requirements, improve handling and storage, recover valuable solids, meet product specifications, or enable safe disposal.
There are compelling reasons across various industries to remove water from slurries:
At ZONEDING, we understand these drivers and help industries select the right drying solution for their specific slurry and objectives.
A rotary slurry (sludge) dryer tumbles the sludge inside a gently inclined, rotating drum while hot gas flows through. Internal lifters continuously lift and shower the sludge through the hot gas stream, promoting heat transfer and water evaporation. Special designs combat stickiness.
Rotary dryers are a common choice for municipal and industrial sludges due to their robustness and capacity. The process involves several key actions:
A slurry dryer doesn’t operate in isolation. It needs supporting equipment to feed it, heat it, handle the exhaust, and control the process. Understanding the full system is vital.
A complete system typically requires: a slurry feed pump (appropriate type for slurry ), possibly a feed tank/mixer , the heat source (burner/steam), the dryer itself, ducting, dust collector, exhaust fan, product discharge system, and controls.
A functional slurry drying plant involves several critical pieces of auxiliary equipment working together:
ZONEDING provides complete, engineered slurry drying systems, ensuring all necessary auxiliary components are correctly selected, sized, and integrated for reliable and efficient operation.
Sludge has a very annoying secret. When it is very wet, it flows like water. When it is very dry, it is like sand. But in the middle, it enters the “Gluey Phase.” This is when the sludge is about 40% to 60% wet. It becomes incredibly sticky, like thick glue or wet clay. This gluey sludge sticks to the walls of the machine and can stop the motor entirely. Many cheap dryers fail because they cannot handle this sticky stage.
ZONEDING has spent 35 years perfecting the answer to this problem. Our Industrial Sludge Treatment lines use internal “breaker” plates and “self-cleaning” chains. As the drum spins, these heavy parts fall and knock the sticky sludge off the walls. Also, our paddle dryers have blades that intermesh and “scrape” each other clean. This ensures that the “glue” never has a chance to stay in one place. We use high-torque motors from global brands like Schneider to keep the blades moving. This rugged design is a trademark of ZONEDING. We make sure your production never stops because of a “sticky” situation.
Yes, you can easily reduce the volume by 80% or more. This is why a Cost of industrial sludge drying system is actually an investment, not a cost. If you start with 10 tons of wet sludge, 8 tons of that is water. Our dryer evaporates that 8 tons into the air as clean steam. You are left with only 2 tons of dry material. This massive reduction makes your waste management so much easier. You need less storage space, fewer trucks, and less labor.
At ZONEDING, we focus on the final density of the material. We want the dry sludge to be easy to pack and move. We also help you design the “Pre-treatment” stage. Sometimes using a press before the dryer can save you even more money. This integrated approach is why we have 15 senior engineers who look at your specific material. We want to maximize your Sludge Volume Reduction while using the least amount of electricity. We use the most modern 2025 heat-exchange math to ensure every bit of hot air is used to dry the sludge, not wasted in the pipes.
| Spec./m (Dia.×Length) | Shell Cubage (m³) | Capacity (t/h) | Installation Obliquity(%) | Highest Inlet Air Temperature(℃) | Main Motor (kw) | Weight (t) |
| Φ1.2×8.0 | 9.0 | 1.9～2.4 | 3～5 | 700～800 | 7.5 | 9 |
| Φ1.2×10 | 11.3 | 2.4～3.0 | 3～5 | 700～800 | 7.5 | 11 |
| Φ1.5×12 | 21.2 | 4.5～5.7 | 3～5 | 700～800 | 15 | 18.5 |
| Φ1.5×14 | 24.7 | 5.3～6.6 | 3～5 | 700～800 | 15 | 19.7 |
| Φ1.5×15 | 26.5 | 5.7～7.1 | 3～5 | 700～800 | 15 | 20.5 |
| Φ1.8×12 | 30.5 | 6.5～8.1 | 3～5 | 700～800 | 18.5 | 21.5 |
| Φ1.8×14 | 35.6 | 7.6～9.5 | 3～5 | 700～800 | 18.5 | 23 |
| Φ2.2×12 | 45.6 | 9.7～12.2 | 3～5 | 700～800 | 22 | 33.5 |
| Φ2.2×14 | 53.2 | 11.4～14.2 | 3～5 | 700～800 | 22 | 36 |
| Φ2.2×16 | 60.8 | 13.0～16.2 | 3～5 | 700～800 | 22 | 38 |
| Φ2.4×14 | 63.3 | 13.5～16.9 | 3～5 | 700～800 | 37 | 45 |
| Φ2.4×18 | 81.4 | 17.4～21.7 | 3～5 | 700～800 | 37 | 49 |
| Φ2.4×20 | 90.4 | 19.3～24.1 | 3～5 | 700～800 | 45 | 54 |
| Φ2.4×22 | 99.5 | 21.2～26.5 | 3～5 | 700～800 | 45 | 58 |
| Φ2.6×24 | 127.4 | 27.2～34.0 | 3～5 | 700～800 | 55 | 73 |
| Φ3.0×20 | 141.3 | 30.1～37.7 | 3～5 | 700～800 | 75 | 85 |
| Φ3.0×25 | 176.6 | 37.7～47.1 | 3～5 | 700～800 | 75 | 95 |
| Φ3.2×25 | 201 | 42.9～53.6 | 3～5 | 700～800 | 90 | 110 |
| Φ3.6×28 | 285 | 60.8～76.0 | 3～5 | 700～800 | 160 | 135 |
A slurry & sludge dryer removes moisture from slurries and sludges, which are semi-solid mixtures containing high water content. This reduces volume, making the material easier to handle and dispose of, and potentially enabling reuse. Facilitates waste reduction.
Drying slurry & sludge reduces landfill volume, lowers transportation costs, and can create valuable byproducts like fertilizer or biofuel. It supports sustainable waste management practices and resource recovery. Supports circular economy.
Slurry & sludge dryer options include rotary dryers, belt dryers, disc dryers, and solar dryers, each suited to different sludge characteristics, throughput rates, and energy source availability. Offers flexible solutions.
Slurry & sludge dryers utilize heat transfer mechanisms (conduction, convection, or radiation) to evaporate the water content, resulting in a drier, more manageable solid. The specific method varies by dryer type. Ensures effective dehydration.
