Construction Waste Recycling Production Line QST1200 QST1800
Turn demolition concrete, brick and stone into graded recycled aggregate and sand.
This line converts demolition and construction debris into usable raw material. Discarded concrete, brick, stone and mixed rubble are loaded through a grate feeder that evens the flow and pre-screens fine soil before anything reaches the crusher. After coarse crushing, a high-frequency vibrating screen takes off material finer than ten millimetres as waste soil while the coarser aggregate carries on. Two impurity removal steps, air separation plus manual sorting, strip out fabric, plastic and foam along with scrap iron and rebar, so crusher hammers and liners are protected. The cleaned aggregate then enters a secondary crusher and a second screening pass, which yields several grades of recycled aggregate and recycled sand. Those grades are used for brick making, road base backfilling and ready-mixed mortar, so material taken off a demolition site goes back into new construction instead of a landfill. Crushing, screening and cleaning follow one another in a compact flow, which suits sites where space is limited.
Configured around output, blocks and operating conditions.
Grate feeder pre-screens fine soil and debris before the primary crusher, cutting the crushing load., High-frequency vibrating screen separates material below ten millimetres as reusable waste soil., Dual-stage impurity removal uses air separation plus manual sorting to clear light and metal waste., Crusher hammers and liners stay protected because fabric, plastic, foam and rebar are removed early., Secondary crushing and a second screening pass produce several grades of recycled aggregate and sand., Output serves brick making, road base backfilling and ready-mixed mortar from one feed stream.
Typical decision factors
What changes the machine price?
Daily capacity
Output target determines machine size, mould cycles and line configuration.
Automation
Pallet handling, cubing, batching and packaging change total project scope.
Block types
Hollow block, paver, interlock and curbstone may require different moulds and handling.
Service scope
Shipping, installation, training and spare parts are quoted by destination.
What the Line Processes
Urban demolition, road reconstruction and building work all produce a mixed waste stream: broken concrete, waste brick, stone fragments and general rubble. This line treats that stream as a raw material rather than a disposal problem. Crushing, screening, impurity removal and air separation are combined in one flow, so the output is recycled aggregate and recycled sand that can be sold or reused on site.
Step by Step Process
A grate feeder starts the flow. Its grate structure pre-screens fine soil and light debris before the material reaches the primary crusher, which cuts the crushing load and extends equipment life. Coarse crushed material then travels on a sealed conveyor to a high-frequency vibrating screen. Everything finer than ten millimetres is collected as waste soil, while the coarse aggregate left on the screen moves forward to cleaning and secondary reduction.
Removing Impurities Before They Cause Damage
Two stages handle contamination. Air separation uses directional airflow to lift out light material such as fabric, plastic and foam, while manual sorting removes large pieces of scrap iron, rebar and other metal. Cleaning the feed at this point keeps foreign objects away from the hammers and liners in the secondary crusher, which is what allows the plant to run long shifts without unexpected repairs.
Grading the Recycled Output
After secondary crushing the material is screened again. Because the second screen is set for the intended end use, the plant can produce different grades of recycled aggregate from one feed, including graded material for brick making, road base backfilling and ready-mixed mortar. Iron removal steps run through the circuit as well, lowering the metal content of the finished product. This is what makes recycled material acceptable to buyers who would otherwise insist on quarried stone.
Layout and Siting
The line is arranged as a compact flow rather than a scattered set of machines, so it fits sites where space is limited. Sealed conveyors between stages keep dust inside the process, and the crushing and screening points can each be fitted with dust collection. Once the plant is set up, operation is continuous, with only the manual sorting station needing attention from staff.
Why Producers Choose Recycling
For demolition contractors and building material producers the value is straightforward: tipping fees fall, raw material costs fall, and the plant turns a waste stream into a product with a sale price. Project owners also meet waste reduction, harmlessness and resource recovery targets without changing their normal site workflow. In cities where demolition volumes keep rising and natural aggregate supply keeps tightening, that combination is usually decisive.