Recovered clay
The fine fraction of hydrovac slurry, silt and clay, recovered as its own material once the stone and sand are out and the water has been pressed away.
What it is
Many receiving facilities treat the fine fraction of slurry as the end of the line: what's left after dewatering, usually headed for disposal. At EcoVac it's a distinct material stream. After the stone and sand are separated, the fine solids are taken out of the water and pressed into a clay that can be handled, stockpiled and directed to reuse. It's the stream that separates a facility recovering only the coarse material from one recovering the fine fraction too.
At a glance
- Source
- Non-hazardous hydrovac slurry received under ECA No. 3168-BH9JQY
- Process
- Separated, washed and stockpiled as its own stream
- Form
- Bulk, stockpiled at the facility
- Availability
- Call the materials line to check current stock and arrange pickup.
- Documentation
- Sampling and analysis under the facility's approval. Ask us what's available for your order.
- Enquiries
- 647-547-1667 ext. 3
How it's produced
1
Fines separation
Water leaving the sand stage still carries silt and clay in suspension. That fine material is settled and separated out so the water can be treated.
2
Pressing
The recovered fines are pressed to remove water, turning a slurry of fine solids into a stackable clay.
3
Stockpiling
The press conveyor discharges pressed clay to its own stockpile, separate from stone and sand.
Typical applications
Depending on project requirements and applicable specifications, recovered clay can be considered for:
- General fill where a fine-grained material is acceptable
- Grading and contouring
- Capping and cover material
- Clay liners
- Cement additives
- Brick and ceramic production
Quality and documentation
Clay is supplied as a pressed recovered fine material. Moisture content, plasticity and other properties vary with the source ground and how long the material has drained, so confirm suitability before ordering.
Our approval sets conditions on the sampling and analysis of recovered material. We keep the technical detail off the website and share it directly with buyers.
Enquire about recovered clay
Tell us the quantity and what it's for. We'll confirm availability, current documentation and next steps.
Common questions
Is recovered clay suitable as fill?
It's commonly used as general fill where a fine-grained material is acceptable. Capping, liner or manufacturing uses depend on the requirements and the material's test results, so ask us for current documentation.
Why is this material usually treated as waste?
Because a facility that only dewaters has nowhere to send it but disposal or one mixed dry soil. Separating and pressing the fines is what makes it a product of its own.
How do I enquire?
Call the materials line at 647-547-1667 ext. 3 or send an enquiry with the quantity and intended use.
Other recovered materials
Recovered material is what makes a load at EcoVac diverted rather than disposed. See how dewatering and full recovery differ.