Subject: Reduce Slag Processing Costs by 1822%: The Premium Slag Crusher Plant Assembly Solution

Is Your Current Slag Processing Creating Hidden Costs in Your Steel Mill?

Managing slag from steel production presents several persistent operational challenges. If you are processing BOF, EAF, or LF slag, you are likely facing these issues:

• High Wear Costs: Standard crushers handling abrasive slag (Mohs hardness 67) often require liner replacements every 36 months, costing upwards of $15,000 per changeout in parts and labor.
• Metal Recovery Inefficiency: Traditional jaw crushers can overgrind slag, trapping 24% recoverable metallic iron in the fines, representing a direct loss of revenue.
• Dust Compliance Pressure: Openair crushing operations struggle to meet OSHA and EPA particulate matter (PM10) standards, risking fines of $10,000$70,000 per violation.
• Downtime for Reconfiguration: Modular plants require 35 days for reconfiguration when switching between slag types, reducing overall plant utilization.

How much is unrecovered metal costing your operation per ton? Can your current setup handle both aircooled and granulated slag without a major overhaul?

Product Overview: The Premium Slag Crusher Plant Assembly



This is a purposebuilt, stationary slag processing plant designed specifically for the highabrasion environment of steel mill byproducts. Unlike modified aggregate crushers, this assembly is engineered from the base frame up for slag’s unique density (2.53.5 t/m³) and ferrous content.

Operational Workflow (4Step Process):
1. Primary Reduction: A heavyduty jaw crusher (1,200mm x 900mm feed opening) reduces raw slag boulders (up to 800mm) to <150mm.
2. Magnetic Separation: A selfcleaning overband magnet (1,200 Gauss) extracts +90% of the ferrous scrap (20150mm) before secondary crushing.
3. Secondary Crushing & Screening: A highchrome impact crusher or cone crusher reduces material to a final product size (05mm, 520mm, 2040mm) with a 3deck vibrating screen.
4. Fines Metal Recovery: A final wet or dry magnetic separator recovers residual iron (5mm) from the slag sand, achieving >95% metal recovery efficiency.

Application Scope: Suitable for processing BOF, EAF, and AOD slag. Limitations: Not designed for highmoisture content (>15%) or sticky slag without a predrying system. Maximum feed size is 800mm.

Core Features: Engineering for Steel Mill Durability

HeavyDuty Steel Frame | Technical Basis: Finite Element Analysis (FEA) optimized structure | Operational Benefit: Withstands the shock loading of 20ton slag boulders without frame fatigue | ROI Impact: Reduces structural maintenance costs by 40% over standard modular frames

HighChrome Alloy Wear Parts | Technical Basis: 27% chrome (Cr27) blow bars and liners | Operational Benefit: 3x longer wear life compared to standard 12% manganese steel in slag applications | ROI Impact: Extends liner change intervals from 3 months to 9 months, saving $22,000 annually in parts

DualStage Magnetic Separation | Technical Basis: Rareearth Neodymium magnets (N42 grade) on primary and secondary belts | Operational Benefit: Recovers both coarse scrap (for resale) and fine iron (for sinter feed) | ROI Impact: Increases metal recovery yield by 1520%, adding $3$5 per ton of slag processed in recovered metal value

Integrated Dust Suppression System | Technical Basis: Highpressure (70 bar) misting nozzles at crusher discharge and screen decks | Operational Benefit: Suppresses 85% of respirable dust (PM10) at the source | ROI Impact: Eliminates need for external baghouse, saving $120,000 in capital and $8,000/year in filter replacement

Hydraulic Gap Adjustment | Technical Basis: Automated hydraulic cylinders on the crusher setting | Operational Benefit: Allows adjustment from 20mm to 80mm closed side setting in under 2 minutes | ROI Impact: Reduces changeover time between slag types by 80%, increasing plant uptime by 4 hours per week

SelfCleaning Return Belt | Technical Basis: Chevronpattern belt with belt scrapers at head and tail pulleys | Operational Benefit: Prevents carryback of sticky slag fines, reducing belt tracking issues | ROI Impact: Eliminates 2 hours of weekly manual cleanout labor, saving $6,500/year

Competitive Advantages: Performance Metrics

| Performance Metric | Industry Standard (Modified Aggregate Plant) | Premium Slag Crusher Plant Assembly | Advantage (% Improvement) |
| : | : | : | : |
| Wear Part Life (Crushing) | 500800 hours (Mn18 liners) | 2,4003,000 hours (Cr27 liners) | +275% |
| Metal Recovery Rate (Total Fe) | 7580% | 9295% | +18% |
| Dust Emissions (PM10) | 1525 mg/Nm³ (without suppression) | 35 mg/Nm³ (with integrated system) | 80% |
| Changeover Time (Slag Type) | 46 hours (manual shim adjustment) | 1.52 hours (hydraulic adjustment) | 65% |
| Plant Availability | 7580% (due to wearrelated downtime) | 9095% (due to heavyduty design) | +18% |

Technical Specifications

| Parameter | Specification |
| : | : |
| Model | PSC400 (Standard) / PSC600 (HighCapacity) |
| Capacity | 150250 TPH (PSC400) / 250400 TPH (PSC600) |
| Feed Size (Max) | 800mm (31.5 inches) |
| Final Product Sizes | 05mm, 520mm, 2040mm (adjustable) |
| Power Requirement | 450650 kW (total installed) / 480V, 3phase, 60Hz |
| Magnetic Separator | 1,200 Gauss (primary) / 3,500 Gauss (secondary, rareearth) |
| Material Specifications | Frame: S355J2+N steel / Liners: Cr27 (Hardness 5862 HRC) |
| Physical Dimensions (LxWxH) | 28m x 12m x 8m (PSC400) / 35m x 15m x 10m (PSC600) |
| Operating Weight | 85 tons (PSC400) / 135 tons (PSC600) |
| Environmental Range | 20°C to +50°C (with coldweather lubrication package) |

Application Scenarios: Proven Results

Steel Mill (EAF Slag) – Midwest USA | Challenge: The plant was losing $2.80 per ton due to unrecovered iron fines (<5mm) going to landfill. Existing cone crusher produced excessive fines (40% <2mm). | Solution: Installed PSC400 with secondary highchrome impact crusher and dualstage magnetic separation. | Results: Metal recovery increased from 78% to 94%. Recovered 12,000 tons of iron fines annually, generating $1.2M in additional revenue. Wear part life increased from 600 to 2,800 hours.

Integrated Steel Plant (BOF Slag) – India | Challenge: Dust emissions from existing opencircuit crushing violated local PCB (Pollution Control Board) norms, risking plant shutdown. | Solution: Retrofitted PSC600 with enclosed structure and integrated highpressure misting system. | Results: PM10 emissions reduced from 22 mg/Nm³ to 4 mg/Nm³. Plant passed compliance audit. Operator exposure to silica dust reduced by 90%.

Slag Processing Contractor – Europe | Challenge: Frequent changeovers between aircooled and granulated slag caused 6 hours of downtime per week for crusher setting adjustments. | Solution: PSC400 with hydraulic gap adjustment and quickchange screen decks. | Results: Changeover time reduced to 1.5 hours. Plant utilization increased from 78% to 93%. Annual throughput increased by 45,000 tons.

Commercial Considerations

Equipment Pricing Tiers (Estimated, FOB Port):

• PSC400 (Standard): $1,200,000 $1,500,000 (includes primary jaw, secondary impactor, screen, magnetic separators, dust system)
• PSC600 (HighCapacity): $1,800,000 $2,200,000 (includes larger jaw, cone crusher, tripledeck screen, dual magnetic separators)
• PSC400 (Wet Processing): $1,600,000 $1,900,000 (adds spiral classifier and hydrocyclone for fines washing)



Optional Features:

• Coldweather package (heated bearings, glycol lines): +$45,000
• Remote monitoring system (SCADA integration): +$35,000
• Extended warranty (3 years / 10,000 hours): +$85,000

Service Packages:

• Basic (Annual): $18,000/year – 2 site inspections, wear part measurement, remote support
• Premium (Full): $55,000/year – 4 inspections, emergency onsite response (48hour guarantee), annual performance audit

Financing Options:

• Equipment leasetoown (3660 months) with 10% residual value
• Performancebased financing: Lower monthly payments tied to throughput targets (minimum 85% of rated capacity)

FAQ: Technical & Commercial Questions

Q: Can this plant process both aircooled and granulated slag without modification?
A: Yes. The hydraulic gap adjustment allows you to change the crusher setting for different slag densities. For granulated slag (higher moisture), we recommend the optional belt scraper upgrade to prevent carryback.

Q: What is the expected payback period for the metal recovery system?
A: Based on field data from 12 installations, the payback period is 1418 months, driven by recovered iron sales. At a typical recovery rate of 25 kg of iron per ton of slag, and iron prices at $350/ton, you recover $8.75 per ton of slag processed.

Q: How does this plant handle the high silica content in slag?
A: The Cr27 highchrome liners are specifically designed for silica abrasion (SiO2 content up to 15%). Industry testing shows a wear rate of 0.8 grams per ton of slag processed, compared to 2.5 grams for standard manganese steel.

Q: What is the lead time for delivery and installation?
A: Standard lead time is 1620 weeks from order. Installation and commissioning typically require 46 weeks onsite with a 2person team from our engineering group.

Q: Can the plant be integrated with an existing slag cooling pit?
A: Yes. The plant is designed with a variablespeed apron feeder that can accept material directly from a frontend loader or a conveyor from the cooling pit. We provide the interface design as part of the engineering package.

Q: What is the total cost of ownership (TCO) over 5 years?
A: Estimated TCO for a PSC400 is $2.8M over 5 years, including initial purchase, wear parts ($420,000), power ($650,000 at $0.10/kWh), and maintenance labor ($180,000). This is 22% lower than a comparable modified aggregate plant due to longer wear life.

Q: Do you offer a performance guarantee on metal recovery?
A: Yes. We guarantee a minimum of 90% total iron recovery (coarse + fine) when processing slag with a feed Fe content of 1525%. If recovery falls below this threshold during the first year, we will adjust the magnetic separator settings at no cost.