💡 Quick Answer: Yes. A purpose-built jumbo bag bitumen melter such as the Sinoto STBD-6 or STBD-10 is designed around 1-ton FIBC bags. Its hoist is rated for 2,000 kg, so a standard 1-ton bag uses only half of the rated lifting capacity.
Road contractors, bitumen traders and asphalt plant owners often ask the same question before investing in new equipment: can a jumbo bag bitumen melter really take a full 1-ton FIBC bag without slowing down the job or adding safety risks? The answer is yes, as long as the machine was engineered for bagged bitumen from the start. A modern jumbo bag bitumen melting machine combines a rated lifting system, a multi-port melting chamber and indirect thermal-oil heating. Each bag is lifted, melted and pumped to storage in one continuous workflow.
In this guide we look at the STBD series from Henan Sinoto (STOM Global). We explain what buyers should check, and why this kind of bulk bitumen melting machine is becoming a practical choice for bulk bitumen handling on remote road projects.
Bitumen supplied in flexible intermediate bulk containers (FIBC), also called jumbo bags or big bags, is popular because it is easier to ship than hot liquid bitumen and cleaner than steel drums. But a 1,000 kg block of solid bitumen is heavy. It needs equipment that can lift it safely and melt it evenly. That is exactly the job of a jumbo bag bitumen melter.
The Sinoto machine has two working parts: a melting chamber and a hoisting structure. The hoisting structure carries a 2-ton electric hoist. On the STBD-6, the maximum hoisting capacity is 2,000 kg at a maximum hoisting height of 3 m. The larger STBD-10 uses two hoists, each rated at 2,000 kg. A 1-ton FIBC bag therefore sits comfortably inside the safe working load. That leaves a margin for the bag itself, rigging and the dynamic loads that occur during lifting.
Once lifted, the bag is positioned over a feeding port. Heat-transfer oil pipes run beneath each port, and a four-way high-temperature smoke pipe runs through the heating bin, so heat reaches the bitumen from several directions at once. The STBD-6 has 3 feeding ports and the STBD-10 has 5, so several 1-ton bags can be melting in parallel.
📌 Engineer’s note: Rated hoisting capacity is only one part of the picture. Always confirm bag dimensions, lifting-loop strength and site lifting height with your supplier before ordering, especially if you use non-standard FIBC bags.
📊 Jumbo Bag Bitumen Melting Machine: Key Numbers at a Glance
| Icon | Feature | STBD-6 | STBD-10 |
|---|---|---|---|
| ⚙️ | Melting capacity | 5–6 tph | 10–12 tph |
| 🏗️ | Hoisting capacity | 2,000 kg | 2,000 kg with two hoists |
| 🔥 | Feeding ports | 3 | 5 |
| 🛢️ | Melting pool | 32 m³ | 80 m³ (35 + 45) |
In theory, a 5–6 tph unit processes roughly five to six 1-ton bags per hour, and a 10–12 tph unit roughly ten to twelve. Real output depends on the bitumen grade, ambient temperature and how quickly crews reload the ports.
Buyers rarely ask about lifting capacity alone. In typical enquiries for a bitumen melting machine, six concerns come up again and again: safety, speed, waste, energy cost, portability and product quality. The table below shows how the STBD design answers each one.
| Buyer Concern | What Buyers Ask | How the Melter Responds |
|---|---|---|
| 🛡️ Safety | Will heating create fire or explosion risk? | Thermal-oil indirect heating avoids direct open-flame heating. Automatic temperature and pressure control and a high-temperature alarm add protection, and enclosed operation reduces exposure to hot bitumen and fumes. |
| ⚡ Speed | Can it keep up with my project? | 5–12 tph output with 3–5 feeding ports for parallel melting. |
| ♻️ Waste | Will bitumen stay stuck in the bags? | A bag suspension and residual-free discharge system is designed to recover the material. |
| ⛽ Energy | What will it cost to run? | Finned tubes, fume recovery, hot-air circulation and rock-wool insulation reduce heat loss. |
| 🚚 Mobility | Can I move it between sites? | Skid-mounted melting chamber and a bolt-together hoist frame for shipping. |
| 🌡️ Quality | Will overheating damage the bitumen? | Automatic temperature control prevents local overheating, aging and carbonization. |
The alternative to jumbo bags is usually barrels. Barrels mean more lifts, more labor, more empty drums to dispose of and more residue left behind. One 1-ton bag replaces roughly five standard 200 kg drums, which cuts the number of handling operations. It also shortens the time crews spend near hot equipment.
Bitumen storage is the other half of efficient bulk bitumen handling. In the Sinoto design, the main tank and auxiliary tank are connected by pipelines. The main tank can work independently, while the auxiliary tank can operate on its own as a bitumen storage tank. Melting and temperature elevation can therefore run at the same time without interfering with each other. A bitumen pump rated at 16.8 m³/h (STBD-6) or 24 m³/h (STBD-10) then moves the material onward. For a jumbo bag bitumen melter, this melt-and-store structure is what turns a single bag lift into a continuous supply.
✅ Key takeaway: Buyers are not just buying a heater. They are buying a safer, faster way to turn packaged bitumen into usable liquid bitumen, with less waste and less manual handling.
Understanding the workflow helps buyers judge whether a machine can really cope with a full-size bag.
⬆️ 1. Lift & Position ➜ 🔥 2. Melt ➜ 🔄 3. Pump ➜ 🛢️ 4. Store & Control
⬆️ Step 1: Lift and position. The electric hoist raises the FIBC bag up to 3 m and places it over a feeding port. The hoisting frame is connected entirely by bolts. It ships separately, because its height would exceed transport limits, and is assembled quickly on site.
🔥 Step 2: Melt. Thermal-oil pipes beneath the feeding port and the four-way smoke pipe in the heating bin transfer heat quickly. The melted bitumen collects in the melting pool, which holds 32 m³ on the STBD-6 and 80 m³ (35 + 45) on the STBD-10.
🔄 Step 3: Pump. The bitumen pump transfers the liquid to your storage tank or downstream equipment.
🛢️ Step 4: Store and control. The auxiliary tank holds the melted bitumen at temperature, while centralized or PLC control keeps the process stable with one-touch start-up.
The heating method is also flexible. You can choose oil burner heating or thermal oil furnace heating, connect an external thermal-oil source, or use built-in diesel or gas burners. Electric heating can be customized on request. That matters when you compare any bitumen melting machine, because fuel availability differs greatly from one project site to another.
📋 Full Technical Parameters
| Parameter | STBD-6 | STBD-10 |
|---|---|---|
| Productive capacity | 5–6 tph | 10–12 tph |
| Max. hoisting capacity | 2,000 kg | 2,000 kg with two hoists |
| Max. hoisting height | 3 m | 3 m |
| Feeding ports | 3 | 5 |
| Melting pool | 32 m³ | 80 m³ (35 + 45) |
| Heating method | Oil burner / thermal oil furnace | Oil burner / thermal oil furnace |
| Bitumen pump capacity | 16.8 m³/h | 24 m³/h |
| Working dimensions (L×W×H) | 16,000 × 2,250 × 6,500 mm | 16,000 × 7,000 × 6,500 mm |
| Transport dimensions (L×W×H) | 11,500 × 2,250 × 2,450 mm | 11,500 × 2,250 × 2,450 mm, 2 pcs |
| Total power | 15 kW | 22 kW |
| Total weight | 12,000 kg | 20,000 kg |
As a rule of thumb, the STBD-6 suits medium-volume projects that need a compact 1 ton bag bitumen melter. The twin-hoist, five-port STBD-10 is aimed at high-volume operations. Its two 2,000 kg hoists let crews feed bags continuously, which makes it a strong bulk bitumen melting machine for large asphalt plants and long highway contracts.
If you are comparing suppliers of a bulk bag asphalt melter, these are the design features worth checking on every quotation.
🛡️ 1. High safety. Thermal-oil indirect heating avoids direct open-flame heating and removes the fire and explosion risks common in traditional equipment. Automatic temperature and pressure control and a high-temperature alarm system protect both the machine and the operators.
🔥 2. High thermal efficiency. Unique finned-tube technology increases the heat exchange area to 1.5 times that of conventional thermal-oil pipes. Asphalt fume recovery and hot-air circulation heat the bitumen uniformly, reduce heat loss and save fuel.
🎯 3. Precise temperature control. A fully automatic system regulates ignition based on temperature. This prevents localized overheating, aging or carbonization, so the bitumen keeps its original performance specifications.
⚡ 4. High productivity. High-density rock wool insulates the equipment on all sides. Multi-circuit heat-conduction oil coils distribute heat evenly and speed up melting. Because the main and auxiliary tanks work independently, melting and heating can happen at the same time.
🎛️ 5. Simple operation. Centralized control or a PLC system offers one-touch start-up. The compact skid-mounted structure is easy to move, install and maintain. That is a real advantage on remote sites, where a jumbo bag bitumen melting machine may be relocated several times a year.
🏆 Why it matters: These five features work together. Safe heating protects your crew, efficient heat transfer protects your fuel budget, and temperature control protects the quality of the bitumen you deliver to the road.
Buyers searching for a jumbo bag bitumen melting machine for sale naturally want a number. In practice, the jumbo bag bitumen melter price depends on configuration rather than a single list figure. The main factors are:
When you compare any bitumen bag melter price, look at total cost of ownership and not only the purchase figure. Fuel consumption, labor hours, bitumen left in bags, downtime and relocation costs all add up over the life of the machine. A well-designed system that recovers residue and saves fuel can offset a higher initial quotation. This is why serious buyers weigh the whole bulk bitumen handling chain, from bag delivery to the storage tank, instead of comparing headline prices alone.
✅ Before you request a quote, prepare:
📩 Ready to find out whether a jumbo bag bitumen melter fits your 1-ton FIBC workflow?
Tell us your daily bitumen volume, bag size and heating source, and our engineers will recommend the right model and quote a configuration for your project.👉 Request a Quote & Send Your Inquiry Now
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