A steel and copper chips briquetting press is a hydraulic machine that compresses loose, low-value metal machining waste (swarf, shavings, turnings) into high-density, cylindrical briquettes. This process transforms scrap into a valuable commodity while recovering costly cutting fluids.

Here is a comprehensive introduction to how these systems work and why they are used.

How It Works: The Cold Pressing Process

Unlike melting or using binders, these presses utilize high-pressure cold compaction.

Feeding: Loose steel or copper chips are fed into a hopper via conveyor or screw feeder .

Compression: Hydraulic rams exert immense force (from 150 tons to over 1,000 tons) to crush the voids between chips .

Fluid Recovery: As the material compresses, cooling lubricants and oils are squeezed out. This fluid is collected, filtered, and often reused, reducing fresh lubricant purchases by up to 95% .

Ejection: The dense "puck" or briquette is ejected, typically measuring 60mm to 220mm in diameter .

Technical Specifications (Typical Ranges)

Output Density: ≥ 5 tons/m³. Briquettes are dense enough to sink in furnace melts rather than burn off .

Residual Moisture: As low as 2-3%. Drier briquettes prevent steam explosions in furnaces .

Throughput: Ranges from 40 kg/h for small workshops up to 9,800 kg/h for industrial recycling centers .

Briquette Weight: Usually 3kg to 15kg per piece .

Why Process Steel & Copper Chips? (Key Benefits)

1. Economic Value (Profit & Cost)

Higher resale value: Briquettes command a significantly higher price than loose chips. Scrap yards and foundries prefer them because they are easier to handle and have lower oxidation loss during melting .

Reduced disposal costs: Wet, oily chips are often classified as hazardous waste. Briquetting extracts the liquid, eliminating disposal fees and reclassifying the material as non-hazardous scrap .

2. Operational Efficiency

Volume reduction: Loose swarf is fluffy and bulky. Briquetting reduces volume by up to 90%, drastically cutting storage space requirements and transportation costs (more weight per truckload) .

Direct smelting: Foundries can feed these uniform briquettes directly into furnaces. Unlike loose chips which oxidize and blow away, dense briquettes improve melt consistency and yield .

3. Environmental & Safety

Fluid recycling: Instead of paying to dispose of oily wastewater, you recover valuable cutting oil for reuse .

Cleaner workplace: Eliminates dust, slippery floors, and the fire hazard associated with fine magnesium or steel shavings .

Types of Technologies Available

Horizontal Presses: The most common design. Material is fed horizontally and pressed against a die. Suitable for steel, copper, and aluminum .

Double-Ram (Double-Sided) Presses: High-end systems (e.g., Lindemann EtaBriq, BrikStar) that press from both ends. This reduces friction, lowers energy consumption, and produces extremely uniform, high-density briquettes with less wear on tooling .

Vertical Presses: Smaller footprint, typically used for lower throughput volumes.

Summary for Decision Makers

If your facility generates over 500 kg of steel or copper chips per week, a briquetting press typically pays for itself within 12-18 months through the combination of fluid savings, increased scrap revenue, and eliminated disposal fees . It effectively turns a waste stream liability into a profit center.