A roller compaction dry granulation machine turns dry powder into fertilizer granules. It feeds powder evenly, and two counter-rotating rollers press it into dense flakes. Then a crusher breaks the flakes, and a screen sorts them, so you get uniform fertilizer granules. You can adjust pressure, roller gap, and speed, to keep fertilizer production output stable. And it uses wet granulation. By controlling raw material moisture, and strengthen flakes at the roller press, reduce over-crushing and optimize screening and recycle, you can cut fines. Besides, you can also change granule size, with changing of the socket size and shape on the roller. What’s more, a typical fertilizer production line uses five key machines: feeder, roller press, crusher, screener, and packing unit. For 5 t/h, plan USD 81,000–103,000. For 10 t/h, plan USD 135,000–180,000. For 20 t/h, plan USD 205,000–274,000.
What’s the working principle of the roller compaction dry granulation machine?
A roller compaction dry granulation machine uses two rollers that turn toward each other. The rollers create high pressure and turn powder into strong fertilizer granules. Powder material enters the nip zone through a forced feeder, so the flow stays steady. The rollers grip the powder and compress it hard. The material becomes dense flakes or compact strips. Then a crusher breaks the flakes into small pieces, and a shaping unit rounds the edges. Next, a screening system separates sizes, so you get uniform granules. Oversize returns to crushing, and fines go back to feeding, so the line runs smoothly.
This dry granulation process needs no water and no drying, so it helps cut energy cost. Besides, it also keeps nutrients stable and reduces caking risk. You can adjust roller gap, roller speed, and feeding rate, and change the roller pocket design. So you can control output, granule strength, and fertilizer particle size. This roller press fertilizer granulator fits NPK, compound fertilizer, and special blends. It supports not only small but also large fertilizer production lines.
Which method does the roller compaction dry granulation machine use?
Do you wonder whether a roller press granulator runs wet or dry granulation? This point matters for formula design and for plant cost. The correct answer is dry granulation. The process starts with dry powder. No water is needed, and no binder is required in most recipes.
A dosing system feeds the material, and a screw pre-compresses it. Then two rollers press it into dense flakes or briquettes. After that, a crusher breaks them into smaller pieces, and a screening unit separates qualified fertilizer granules. Oversize goes back to crushing, and fines return to the press. So you form granules in a closed loop. Dry granulation saves drying energy, and it avoids wastewater. It also keeps nutrients stable, and it suits heat-sensitive blends. You can reach consistent particle size and high bulk density by adjusting roller pressure, gap, and feed rate. This is why many compound fertilizer production lines choose a roller compactor dry granulator.
How to reduce fines when using a roller compaction dry granulator?
Do you want to reduce fines when using roller compaction dry granulator? As a fertilizer dry granulator roller compactor manufacturer, we suggest you control raw material moisture, strengthen flakes at the roller press, reduce over-crushing and optimize screening and recycle.
Two method of adjusting the fertilizer granule size of a dry granulation roller compactor
A dry granulation roller compactor can produce fertilizer granules in a common range of 3–10 mm. You can control this range in two clear ways.
First, adjust the socket size on the roller mold. By changing the socket diameter and depth, you can change the granule size. Use smaller sockets to make 3–5 mm granules. Use medium sockets for 5–8 mm. Use larger sockets to reach 8–10 mm.
Second, adjust the socket shape on the roller mold. Shape does not mainly change size, but it changes appearance and strength. Round sockets make round fertilizer granules and good flow. Oval or pillow sockets make denser granules and better anti-break performance. So you choose size for diameter control and choose shape for form and durability. This method is direct and fast. It also keeps fertilizer production output stable and reduces rework.
How many equipment units does your dry roller press granulator line consist of?
Are you ready to start a fertilizer granulation line such as a roller compaction granulation line? Do you want to know what machines you need and how they connect? As a fertilizer dry roller press granulator manufacturer, I will list the core equipment and the process flow. A typical dry fertilizer roller pressing granulation production line includes five key machines.
First comes the dynamic feeder. It controls feed rate and keeps the material stable. Then comes a horizontal twin shaft mixer. It blends powders fast and makes the formula even. Next is the double roller granulator. It presses the mix into dense flakes and breaks them into granules. After that, a rotary drum screener separates qualified size and returns fines for reuse. And the last step is the packing machine. It weighs the produced fertilizer and fills bags with high accuracy. These machines work in sequence, so the line runs smoothly and output stays steady. With the right layout and control system, you get less dust, higher yield, and strong fertilizer granules.
What is the price of a roller compaction dry granulation line?
Do you want to know the price of a fertilizer granulation line such as a dry double roller granulation line? The price depends on your target capacity.
If you plan to make 5 t/h, your budget is USD 81,000–103,000. If you plan to produce 10 t/h of fertilizer, your budget is USD 135,000–180,000. If you plan to run 20 t/h, your budget is USD 205,000–274,000. These ranges fit a standard fertilizer production line for mixing, compacting, screening, and packing. You can also add conveyors, dust control, or a return system. Those options raise the total cost, but they also improve stability and reduce labor. So, start with your capacity. Then confirm your formula and raw materials. Next, check plant space and power supply. After that, choose the final configuration.
If you want to learn more about dry roller press granulator for fertilizer production, or if you need a custom fertilizer production plan, please contact us,YUSHUNXIN, now. We also offer economical disc granulators and new high-hardness organic fertilizer granulators for you to choose from.
