Load

Powder drops in through the 500 mm manholes at the silo. The V-shaped floor fills from the centre line out, so the tank loads evenly instead of mounding at one end.

Pressurise

The engine-driven compressor feeds low-pressure air into the aeration pads along the tank floor. The safety pressure valve caps the working pressure and protects the shell.

Fluidise

Aerated powder behaves like a liquid. It runs down the V slope to the discharge point instead of bridging over a flat floor — this is where a poor tank design loses its load.

Deliver

The 4 inch line carries the fluidised material to the receiving silo. Under 0.3% stays behind, so cross-contamination between loads is minimal and cleaning is quick.

Why the V-shape and not a flat-bottom barrel

A flat floor only empties cleanly while the material is above the discharge point. Below that level, powder sits in dead corners that air cannot reach, and the residual climbs into whole percentage points — tonnage you paid to load and never get paid to deliver.

The V section removes those corners. It also lowers the centre of gravity of the load, which is why the trailer stays planted on the rutted, cambered access roads around batching plants.

Why the tank has to be welded, not bolted

Pneumatic conveying only works if the air goes through the powder instead of leaking out of the seams. The barrel is welded on automatic submerged-arc equipment, inside and out, so the shell holds pressure and the compressor's output is spent moving material.

That is also why the shell is 5 mm with 6 mm dished ends: it is a pressure boundary first and a container second. Thin-wall tanks save tare weight and lose it again in air leaks.

Cement

• Grades
• OPC, PPC, blended
• Route
• Plant to ready-mix batching plant and silo
• Build note
• Baseline duty: standard 5/6 mm shell and V floor.

Fly ash

• Route
• Power station to concrete and road-base projects
• Build note
• Fine and dusty — aeration pads and compressor capacity do the work, not slope alone.

Lime & mineral powder

• Route
• Quarries, mineral processing, steel plants
• Build note
• Abrasive — specify heavier plate and wear protection on the discharge line.

Chemical powders

• Route
• Chemical plants and blenders
• Build note
• Sealed against moisture ingress; internal finish to your material specification.

Dry bulk grain

• Route
• Feed mills and food-grade bulk handling
• Build note
• Only where a food-compatible internal finish and cleaning regime is specified.