High-Capacity Stainless Steel Bunkers for Industrial Storage and Discharge
By Atommek – Trusted Manufacturer of Storage and Process Equipment
Stainless Steel Bunker Solutions for Powder & Granular Materials
At Atommek, we specialize in the design, engineering, and manufacturing of powder and granule bunkers tailored to a wide range of industries. Our high-capacity stainless steel bunkers ensure safe, efficient, and controlled storage and discharge of bulk solid materials.
We recently completed the successful production and delivery of two 47 m³ AISI 304 stainless steel bunkers for a European customer—once again demonstrating our commitment to precision, durability, and industry-leading standards.
📦 What is a Bunker?
A bunker is a steel storage structure, typically located at the base of a silo, designed to enable safe, controlled discharge of stored powdered or granular materials such as grains, chemicals, minerals, or waste.
Common designs include conical, pyramidal, or hopper-shaped configurations for optimized flow and discharge.
⚙️ Applications of Powder & Granule Bunkers
| Industry | Usage |
|---|---|
| Mining | Storage and discharge of coal, minerals, and metal ores |
| Construction | Handling sand, gravel, cement, and dry mixes |
| Agriculture | Storing grain, feed, fertilizer, or seed |
| Chemical Industry | Controlled storage of chemical powders and granules |
| Energy Sector | Feeding systems for fuels such as coal dust and sawdust |
| Food Industry | Hygienic storage of powdered food ingredients like flour, sugar, and spices |
🔗 Explore Industry Solutions
✅ Advantages of Atommek Bunkers
- Controlled Material Flow: Ensures uninterrupted discharge with flow control systems.
- Hygienic and Safe Storage: Prevents contamination and supports industrial hygiene.
- Durability: Manufactured from AISI 304 / 316 / 316L stainless steel.
- Corrosion and Abrasion Resistance: Suitable for harsh and reactive materials.
- Customizable Design: Tailored capacity, shape, and outlet types available.
- Maintenance-Friendly: Smooth interior surfaces for easy cleaning and minimal residue.
🛠️ Types of Powder & Granule Bunkers We Manufacture
🔹 Conical Bunker
The most widely used design. Ensures easy flow and fast discharge of powders and small granules.
🔹 Pyramidal Bunker
Ideal for space-restricted installations. A compact yet efficient design for granular storage.
🔹 Hopper Bunker
Designed for fast discharge cycles, perfect for continuous processing lines.
🔹 Stainless Steel Bunker for Chemicals
Engineered for safe chemical storage. Resistant to acids, alkalis, and reactive compounds.
🔹 Food-Grade Bunker
Sanitary designs with easy-to-clean surfaces. Suitable for powders in food and pharma applications.
🔹 Liquid Bunker Options
While primarily for dry bulk, we also design liquid storage bunkers upon request.
🔒 Why Choose Stainless Steel for Bunkers?
Stainless steel offers unmatched benefits:
- Corrosion resistance for harsh chemical environments
- Hygienic surfaces for food safety
- Long lifespan even in outdoor or industrial settings
- Low maintenance and superior ROI over time
At Atommek, we work with AISI 304, 316, and 316L stainless steel grades to meet the exact needs of your application.
📈 Industries We Serve
- Chemical Manufacturing
- Petrochemical
- Cosmetic
- Food Processing
- Pharmaceutical
📄 Technical Specifications (Customizable per project)
| Feature | Specification |
|---|---|
| Capacity | Up to 50 m³ (custom sizes available) |
| Material | AISI 304 / 316 / 316L Stainless Steel |
| Shape | Conical, Pyramidal, Hopper |
| Surface Finish | Polished, pickled, or sandblasted |
| Discharge Options | Manual gate, pneumatic valve, screw feeder |
| Certifications | ISO 9001, CE Marking |
FAQ – Powder & Granule Bunkers
What is the ideal bunker shape for free-flowing powders?
Conical bunkers are typically best for powders with good flow characteristics, while hopper or pyramidal shapes can be used for compact spaces or sticky materials.
Can you manufacture food-grade bunkers?
Yes, we produce hygienic stainless steel bunkers compliant with food industry standards, including polished interiors and easy-clean access.
Do you offer installation services?
Yes, we provide on-site installation, supervision, and startup support for all bunker systems.
What’s the lead time for bunker manufacturing?
Depending on size and complexity, delivery usually ranges from 6 to 12 weeks after design approval.
Can bunkers be customized to fit my existing silo or system?
Absolutely. Our engineering team will design a fully custom bunker to integrate seamlessly into your process.