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We produce high quality products with the best materials! or over 36 years, Red Star has been a company dedicated to the engineering and manufacturing of screening media that are widely used in the mining and aggregates industry.
Mineral screens play a vital role in the construction industry, particularly in sand and gravel aggregate production, concrete preparation, construction waste recycling, and environmentally friendly building material processing Their application not only improves the quality of building materials and engineering efficiency, but also contributes to the realization of green building and sustainable development goals
Functional requirements:
Aggregates of sand and gravel used in construction must meet strict grading standards (such as the fineness modulus of sand for concrete and the distribution of crushed stone particle size). The ore screen uses multi-stage screening (coarse crushing, medium crushing, and fine crushing) to grade natural ore or machine-made sand according to particle size to ensure that the aggregates meet the needs of different projects (such as C30 concrete, roadbed filling, etc.).
effect:
Improve concrete strength: Accurate screening reduces coarse or fine particles and optimizes aggregate grading;
Reduce cement usage: Reasonable grading reduces aggregate void ratio and saves cementitious material costs.
Crushing and screening system:
Mineral screens are used to sort construction waste (concrete blocks, bricks, tiles, steel bars, etc.), separate recyclable aggregates from impurities, and produce recycled aggregates (such as RCA recycled concrete aggregates) for road bases, non-structural concrete, etc.
effect:
Reduce landfill volume: the recycling rate of construction waste has increased to over 70%;
Save natural resources: replace natural sand and gravel to alleviate the pressure of resource shortage.
A. Screening of lightweight building materials:
In the production of lightweight aggregates such as expanded perlite and ceramsite, mineral screens are used to control particle size to ensure that thermal insulation and sound insulation performance meet standards.
B. Screening of decorative materials:
Screening of natural stone fragments (such as marble and granite) for use in artificial stone slabs or landscape paving to increase added value.
Raw material quality control:
Screening of sand, fly ash, mineral powder and other raw materials to remove lumps or impurities to ensure uniformity and construction performance of concrete and mortar.
(1) Common screen types
A. Vibrating screen (linear screen, circular vibrating screen):
It is suitable for high-yield sand and gravel aggregate grading, with a processing capacity of up to 1,000 tons/hour. The multi-layer screen design (such as 3-5 layers) realizes the synchronous output of multiple particle sizes.
B. Drum screen:
Used for the preliminary sorting of construction waste, separating large debris and recyclable aggregates through a rotating screen drum.
C. High frequency screen:
Focus on fine sand recovery (such as stone powder control in machine-made sand) to reduce resource waste.
A. Wear resistance:
Sand and gravel aggregates have high hardness (Mohs hardness 6-7), so the screen needs to be made of high manganese steel, polyurethane or rubber edging material to extend its service life.
B. Anti-blocking hole design:
During wet screening, a wavy screen surface or a bouncing ball screen cleaning device is used to reduce sand adhesion and clogging.
C. Modular structure:
Quickly change the screen specifications (such as 4mm, 10mm aperture) to adapt to different project requirements.
Selection depends on material hardness, moisture content, particle size, and impact force:
Wet or sticky materials → Polyurethane mesh (anti-clogging)
High abrasion materials → Manganese steel woven mesh or perforated plate
High-precision screening → Stainless steel woven mesh
Heavy impact materials → Steel-edge PU panels or rubber screen panels
Choosing the correct mesh improves output and reduces downtime.
Service life varies with material abrasiveness, vibration frequency, installation tension, and screen type:
Polyurethane mesh: 3–12 months
Manganese steel mesh: 1–6 months
Stainless steel mesh: 2–8 months
Rubber panels: 4–12 months
Proper tensioning and selecting the right aperture significantly extend lifespan.
Clogging occurs due to moisture, irregular particle shapes, or unsuitable aperture designs. Prevention methods:
Use self-cleaning screens (wave or harp type)
Switch to polyurethane anti-blinding mesh
Adjust vibration amplitude and screen angle
Pre-screen wet or muddy materials
Anti-clogging solutions greatly improve screening efficiency.
Key points during replacement include:
Ensuring consistent tension across the entire screen
Checking the screen frame for deformation
Matching hook types or fastening systems with your screen machine
Cleaning the deck to remove remaining material
Proper installation reduces breakage and improves screening accuracy.
Screening efficiency can be improved by:
Choosing the right aperture and mesh material
Adjusting vibration frequency and screen inclination
Maintaining uniform material feeding
Using multi-stage screening designs
Performing regular maintenance on screen decks and meshes
Efficiency improvements of 10–30% are commonly achievable.