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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 screening machines are essential key equipment in the recycling industry Their core role lies in efficient sorting, resource purification, and waste reduction, helping to achieve circular economy and sustainable development goals
Sorting process:
The mining screen is used for multi-stage screening of crushed construction waste (concrete blocks, bricks and tiles, wood, plastic, etc.) to separate recycled aggregates of different particle sizes (such as 0-5mm fine aggregate for mortar, 5-30mm coarse aggregate for roadbed filling).
effect:
Remove impurities: Separate non-aggregate components such as steel bars and plastics through the difference in screen aperture;
Improve recycling rate: Increase the resource utilization rate of construction waste from less than 30% to more than 70%;
Reduce costs: Recycled aggregate replaces natural sand and gravel, saving raw material procurement and transportation costs.
Separation of metals and non-metals:
The mine screen is combined with crushing equipment to crush waste electronic products (circuit boards, cables) and classify them according to particle size. The vibrating screen is used to separate metal particles (copper, aluminum) and non-metallic materials (plastics, ceramics).
effect:
Improve metal recovery rate: extract high-purity metal powder through precision sieve (such as 0.5-2mm aperture);
Reduce pollution: Screen out fine particles containing harmful substances such as lead and mercury to reduce environmental risks.
Crushing residue sorting:
After magnetic separation of automobile crushing residue (ASR), the mine screen separates non-ferrous metals (aluminum, zinc), plastics and glass fibers from the remaining materials.
effect:
Refined recycling: multi-layer screens (such as 10mm, 5mm, 2mm) achieve multi-level sorting;
Maximizing resources: The recycling rate is increased to over 85%, reducing the amount of landfill.
Color and material sorting:
High-frequency vibrating screens separate crushed plastic fragments (such as PET bottle flakes and HDPE granules) by particle size, and optical sorting technology is used to improve purity.
effect:
Control the quality of recycled materials: Screen out impurities and discolored particles to ensure that the recycled plastic meets food grade or industrial grade standards;
Increase added value: The price of high-purity recycled plastics can be 30%-50% higher than that of mixed materials.
Pretreatment before smelting:
Mineral screens are used to sort scrap steel, aluminum chips and other metal waste, remove dirt, oil and other impurities, and meet the feeding requirements of electric furnaces or smelting furnaces.
effect:
Reduce energy consumption: The purity of metal is improved after screening, reducing energy waste during smelting;
Extend equipment life: reduce corrosion of the furnace wall caused by impurities.
Applicable scenarios:
Grading of recycled aggregates from construction waste and sorting of metal waste.
Technical features:
Large processing capacity (200-1000 tons/hour), suitable for large-scale recycling lines;
The screen material is mostly high manganese steel or polyurethane, which has strong impact resistance.
Applicable scenarios:
Primary sorting of electronic waste and pre-screening of plastic fragments.
Technical features:
Simple structure, suitable for materials with high moisture content or viscosity;
The sieve holes can be customized (5-50mm) to separate large impurities.
Applicable scenarios:
Ultrafine powder recovery (such as lithium battery positive electrode materials, precious metal dust).
Technical features:
Screening accuracy is above 400 mesh;
No mechanical vibration, suitable for lightweight materials that are prone to dust.
Applicable scenarios:
Fine-particle metal powder recovery and plastic micropowder sorting.
Technical features:
High-frequency micro-vibration, anti-blocking hole design;
The screen has a long service life (6-12 months for polyurethane material).
1. Construction waste recycling project:
An environmental protection company uses the "jaw crusher + impact crusher + three-layer vibrating screen" process to convert demolition waste into 0-4.75mm, 4.75-9.5mm, and 9.5-31.5mm recycled aggregates for municipal road construction, with an annual processing capacity of 1 million tons.
2. Electronic waste metal recycling:
A recycling company uses a high-frequency vibrating screen (aperture 0.3mm) to sort circuit board scraps, increasing the copper recovery rate from 75% to 92% and increasing annual revenue by US$3 million.
3. Plastic bottle recycling line:
The drum screen pre-screens label fragments, and the airflow screen selects 0.5-2mm PET bottle flakes with a purity of 99.5%, meeting food-grade recycling 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.