The CONSTMACH Stationary Screening and Washing Plant is a fixed line that screens and washes sand and gravel to produce clean, graded products. The sections below explain what it produces, the materials it accepts, the sequence of process stages, where it is used, how the water circuit is managed, and the maintenance it requires.
What does the plant produce?
It produces multiple washed and graded fractions of sand and aggregate from raw feed. Clay, silt, and dust are removed during washing, so the output is clean material suitable for concrete, asphalt, and other construction uses.
What materials can it process?
The plant handles natural sand and gravel as well as crushed stone. The standard configuration accepts a maximum feed size of around 200 mm at a feeding height of about 4.5 metres.
What are the main process stages?
- Feeding: a hopper with a vibrating feeder delivers a controlled flow onto a conveyor.
- Screening and washing: a vibrating screen with spray nozzles separates fractions and rinses out fines.
- Sand washing: a screw, bucket-wheel, or hydrocyclone unit washes and dewaters the sand.
- Water treatment: settling and clarification recover water and separate the solids.
Where is the plant used?
It is used at quarries, sand and gravel pits, and aggregate production sites that require a permanent, high-output washing facility producing several graded products at once.
How is water managed?
Spray and wash water carry clay, silt, and dust to a water-management stage with settling tanks, thickeners, or filter presses. Clarified water is recirculated to the plant, which reduces fresh-water consumption and controls the discharge of fines, while the separated solids are removed as cake or sludge.
What maintenance is required?
Routine maintenance covers screen media, spray nozzles, the wear parts of the sand washer, conveyor belts and idlers, and inspection of pumps and the water-treatment equipment. Because the plant is PLC-controlled, the electrical and control system is also checked as part of regular servicing.
