ROHS Compliant Gold Ore Crushing Equipment: Engineered for HighYield, LowImpact Mineral Liberation

1. PAINPOINT DRIVEN OPENING

Managing a gold ore processing operation involves constant pressure to balance throughput, recovery rates, and operational costs. When your primary crushing circuit is the bottleneck, the entire plant suffers. Are you facing these specific challenges?

Contaminant Risk in Sensitive Markets: Noncompliant equipment components can introduce restricted substances like lead, cadmium, or mercury into your process flow, jeopardizing the purity of your final doré and creating compliance barriers for international sales.
Unscheduled Downtime from Abrasive Wear: The extreme abrasiveness of quartz and sulfidehosted gold ore leads to rapid wear on crusher liners and internal components. Frequent maintenance stops for liner replacement can cut productive crushing hours by 1525% annually.
Inconsistent Feed Size Reduction: Fluctuating ore hardness and moisture content cause chokefeeding or erratic output from your primary crusher, creating inefficiencies downstream in milling and leaching circuits, ultimately impacting gold recovery percentages.
High Operational Costs: Energyintensive crushing processes and the combined expense of replacement parts, labor for maintenance, and potential production halts directly erode profit margins per ton of ore processed.

The central question for plant managers is this: How can you achieve reliable, hightonnage primary crushing while ensuring material purity and controlling the total cost of ownership? The solution requires equipment designed from the ground up to address these exact pressures.

2. PRODUCT OVERVIEW

Our ROHS Compliant Gold Ore Crushing Equipment line comprises heavyduty primary jaw crushers and gyratory crushers specifically configured for the initial size reduction of runofmine (ROM) gold ore. These machines are engineered to transform large, irregular feed material into a consistent, manageable product for secondary crushing and grinding circuits.

Operational Workflow:
1. ROM gold ore (up to 1.5m lumps) is fed into the crusher’s reinforced feed hopper.
2. The robust crushing chamber, with its optimized kinematics and ROHScompliant manganese steel liners, applies compressive force to fracture the ore along natural cleavage lines.
3. The crushed product discharges at a preset closedside setting (CSS), typically between 150mm to 200mm for primary stage, ready for conveyor transport to the next processing stage.

Application Scope: Ideal for hard rock gold mining operations processing lode or vein deposits with high quartz content. Suitable for both stationary plant installations and modular plant designs.

Limitations: This equipment is designed for primary crushing duty. For operations requiring direct fine crushing or handling of alluvial/placer deposits without hard rock components, alternative crushing solutions should be evaluated.

3. CORE FEATURES

ROHSCompliant Wear Liners | Technical Basis: Advanced metallurgy using certified manganese steel alloys free from restricted substances | Operational Benefit: Eliminates risk of heavy metal contamination in your process stream, ensuring product purity meets stringent international market standards | ROI Impact: Protects premium product value and avoids costly compliancerelated rejections or remediation.

Hydrostatic Crusher Drive System | Technical Basis: Direct drive via hydraulic motors with variable speed control | Operational Benefit: Provides smooth startup under load, reversible operation to clear blockages, and precise adjustment of crusher speed to match feed conditions | ROI Impact: Reduces mechanical stress by up to 40%, lowering failure rates on driveshafts and couplings and minimizing blockagerelated downtime.

Automated Gap Setting & Wear Compensation | Technical Basis: PLCcontrolled hydraulic adjustment system with realtime position sensors | Operational Benefit: Allows operators to adjust the crusher discharge setting remotely in minutes without manual intervention; system automatically compensates for liner wear to maintain consistent product gradation | ROI Impact: Maintains optimal throughput and product size over liner life, increasing yield stability by an average of 8% compared to manual adjustment methods.

Integrated Dust Suppression Manifold | Technical Basis: Internal spray bar system delivering atomized water at strategic points in the crushing chamber | Operational Benefit: Significantly reduces silica dust generation at the point of origin, improving site air quality and protecting worker health | ROI Impact: Lowers costs associated with external dust collection systems and reduces housekeeping labor by an estimated 20%.

Modular Liner Design & QuickChange Tooling | Technical Basis: Segmented liner plates secured with bolting systems accessible from top or sides | Operational Benefit: Enables faster liner replacement cycles using standard plant tools; reduces personnel exposure inside the crusher cavity during maintenance | ROI Impact: Field data shows a reduction in liner changeout time by up to 35%, directly increasing crusher availability.

HeavyDuty Skid Base & Vibration Isolation | Technical Basis: Unitized fabricated steel base with integrated antivibration mounts | Operational Benefit: Simplifies foundation requirements, reduces transmitted vibration to supporting structures, and facilitates faster installation during plant setup or relocation | ROI Impact Cuts installation time and concrete costs by approximately 25% compared to traditional poured foundations.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Conventional Crusher) | ROHS Compliant Gold Ore Crushing Solution | Advantage (% Improvement) |
| : | : | : | : |
| Liner Life (Abrasive Ore)| 450 550 kTonnage| 600 700 kTonnage| +20% Extended Life |
| Average Time Between Maintenance (MTBM)| ~220 hours| ~300 hours| +36% Improved Reliability |
| Energy Consumption per Ton Crushed| Baseline (100%)| Optimized chamber design & drive efficiency| 12% Reduced Power Draw |
| OnSite Liner Replacement Time| 1624 hours crew time| 1016 hours crew time| 35% Faster Service |
| Product Size Consistency (± from CSS)| ±25mm variance over liner life| ±15mm variance with autocompensation| +40% Improved Consistency |

5. TECHNICAL SPECIFICATIONS

Model Range: JC1200 (Jaw) / GC400 (Gyratory)
Feed Opening: JC1200: 1200mm x 900mm; GC400: Feed opening up to 1500mm
Capacity Range: Up to 1,800 tonnes per hour (dependent on model & feed material)
Power Requirement: From 150 kW up to 375 kW; supplied at either IP54 protection standard
Crushing Chamber Material: Fabricated from hightensile steel; all wear surfaces lined with ROHScertified manganese steel alloy.
Key Component Compliance: All seals lubricants electrical insulation materials verified ROHS Directive compliant
Physical Dimensions (JC1200 Example): Length ~7m Width ~3m Height ~3m Approx weight ~45 tonnes
Environmental Operating Range Ambient Temperature 20°C +45°C Designed humidity tolerance up

6 APPLICATION SCENARIOS

Hard Rock Underground Mine Expansion Challenge A mid tier miner expanding their underground operation faced increased haulage costs bringing ROM ore surface Their existing surface primary crusher could not be relocated underground due space constraints ventilation limits Solution Installation a compact gyratory model ROHS Compliant Gold Ore Crushing Equipment within a newly excavated underground crushing chamber The units skid mounted design facilitated modular assembly Results Reduced ore haulage vertical height by meters lowering haulage energy costs Quantifiable outcomes included increase overall plant throughput elimination surface noise dust generation near camp

High Grade Quartz Vein Processing Challenge A processing plant targeting high grade but highly abrasive quartz veins experienced unsustainable costs downtime due weekly liner inspections monthly full changes their conventional jaw crusher Solution Deployment a jaw crusher model featuring Modular Liner Design Quick Change Tooling ROHS compliant liners engineered specifically abrasive ore Results Extended liner life documented increase average tonnage processed between changes reduced critical liner change outage time from hours hours directly contributing additional production days per quarter

International Export Focused Producer Challenge A producer aiming supply European Asian markets needed guarantee their bullion would pass stringent impurity assays suspected trace contaminants originating wear particles older crushing equipment Solution Phased replacement their primary secondary crushers with full suite ROHS Compliant Gold Ore Crushing Equipment establishing controlled material pathway mine through initial liberation Results Achieved certified chain custody documentation regarding material contact eliminated previously detected trace elements subsequent doré bars securing premium off take agreements

7 COMMERCIAL CONSIDERATIONS

Equipment pricing structured according capacity rating automation level Base models include core crushing unit drive motor standard control panel Optional features include advanced PLC automation packages integrated condition monitoring sensors remote diagnostics connectivity custom engineered skids rapid wear part kits

Service packages available tiered coverage from basic preventive maintenance schedules comprehensive annual performance contracts including guaranteed parts availability priority technical support Financing options include capital purchase finance lease operating lease structures tailored support cash flow management new expansion projects

8 FAQ

What does ROHS compliance mean context mining equipment It signifies that all homogeneous materials components contact the ore process stream including liners seals lubricants electrical elements are certified free restricted substances lead mercury cadmium hexavalent chromium etc This prevents introduction contaminants your valuable mineral concentrate

How does this equipment integrate existing secondary tertiary crushing circuits Our primary crushers are engineered produce consistent well graded product feed Designed interface standard conveyor systems apron feeders ensure seamless transition your existing SAG mill ball mill circuit

What measurable efficiency gains can realistically expected Based field performance data across similar installations operators report average improvement overall energy consumption circuit reduction unscheduled downtime related wear maintenance Specific gains depend your ore characteristics operational parameters

Are spare parts readily available given specialized compliant materials Yes We maintain global inventory certified wear parts critical components Our distribution network ensures supply even remote sites reducing risk extended production delays

What typical implementation timeline new greenfield installation For complete primary crushing station including civils work delivery commissioning typical timeline ranges months depending site specifics Modular skid mounted designs can reduce this timeframe approximately months