50% Moisture Activated Clay
50 % moisture bleaching earth packed the pockets of a standard valve; a helical rotor with adjustable tips and air-purge shaft sealing runs a full shift between cleans.
A bleaching earth producer, Zhejiang · In service since 22/04/2020
- Client
- A bleaching earth producer, Zhejiang
- Industry
- Chemical & Petrochemical
- Material handled
- Activated bleaching earth at 50 % wt moisture
- Conditions
- Max 60 °C, max 0.1 bar differential, 3 t/h target throughput
- Commissioned
- 22/04/2020
The challenge
The clay left the filter press at about 50 % moisture and packed into the rotor pockets. A standard open rotor bridged above the inlet and then jammed solid, and the operator was opening the body by hand once a shift. Dust also worked into the end-cover seal and the bearing failed in the first month.
What we did
A helical rotor in a drop-through body scours the pocket wall on every revolution, so material cannot build up between passes. Adjustable tips are set to a 0.08 mm gap for the sticky cake, and air-purge shaft sealing keeps the clay out of the end-cover seal.
Result
The feeder now runs a full shift without being opened, and the body is cleaned on the planned weekend stop. The plant re-orders the helical rotor as a wear item rather than replacing whole valves.
A bleaching earth producer, Zhejiang
Data we asked for
- Moisture content and stickiness range of the cake
- Whether the discharge is under vacuum or gravity
- Cleaning routine the operators can actually keep to
Hardware in this project
Valves supplied
Applications
Spare parts
- Helical Rotor RX-H-200-01
- Adjustable Tip Rotor RX-A-200-03
Next step
Have a duty like this one?
Send the material, the temperature, the pressure differential and the throughput you need, and we will size the valve against them.