1. PAINPOINT DRIVEN OPENING

Are you managing the high costs and complexities of primary ore crushing in your gold processing operation? The initial size reduction stage sets the tone for your entire recovery circuit, and inefficiencies here cascade downstream, eroding profitability. Key challenges include:
Excessive Downtime: Frequent liner changes and mechanical failures in conventional crushers halt your milling circuit, costing thousands per hour in lost production.
Inconsistent Feed Size: Poorly controlled primary crushing output leads to erratic feed for your stamp mill or ball mill, reducing grinding efficiency and increasing energy consumption.
High Maintenance Labor Costs: The repetitive, heavy nature of maintaining traditional primary crushers demands significant skilled labor hours and inventory for wear parts.
Safety & Operational Risks: Manual clearing of blockages and routine maintenance on large, heavy components exposes personnel to risk.

Is your operation seeking a robust, lowmaintenance primary crushing solution designed specifically to feed a stamp mill circuit? One that maximizes uptime and delivers a consistent, optimallysized feed to improve overall gold recovery efficiency?

2. PRODUCT OVERVIEW

This product is a HeavyDuty Primary Jaw Crusher Assembly Plant, engineered as the optimal firststage crushing unit for stamp mill gold mining operations. It is designed to process runofmine (ROM) hard rock quartz ore, delivering a consistent discharge size suitable for feeding a gravity stamp battery.

Operational Workflow:
1. ROM ore (up to 750mm) is fed via grizzly or apron feeder into the crusher hopper.
2. The reciprocating motion of a robust manganese steel jaw plate crushes rock against a fixed jaw, applying compressive force.
3. Crushed material exits through an adjustable discharge gap, typically set between 100150mm for stamp mill feed.
4. The product is conveyed directly to a surge pile or feed hopper for the stamp mill battery.

Application Scope: Ideal for small to midscale hard rock gold mining operations utilizing gravity stamp mills for ore liberation. Best suited for quartzbased ores with compressive strength under 250 MPa.

Limitations: Not designed as a finegrinding unit; final pulverization is performed by the stamp mill. Not recommended for highly abrasive or clayrich ores without prescreening/scalping.

3. CORE FEATURES

Modular SkidMounted Design | Technical Basis: Preassembled, steelfabricated chassis with integrated motor mounts and feeder interface | Operational Benefit: Dramatically reduces plant installation time and civil works costs by up to 70%. Allows for relocation as mining faces advance. | ROI Impact: Faster commissioning (days vs. weeks) leads to earlier production revenue.

HeavyDuty Manganese Steel Jaws | Technical Basis: Workhardening austenitic manganese steel castings with deep corrugations | Operational Benefit: Jaws develop greater wear resistance during operation, extending service life by an average of 3040% over standard alloys under highimpact conditions. | ROI Impact: Reduces consumable parts cost per ton and associated downtime for changes.

Hydraulic Toggle Adjustment System | Technical Basis: Dualacting hydraulic cylinders replace traditional manual toggle plates | Operational Benefit: Enables remote adjustment of crusher discharge setting and provides automated clearing of tramp metal or blockages in minutes, eliminating hazardous manual labor. | ROI Impact: Minimizes unplanned downtime events and improves site safety compliance.

Robust Eccentric Shaft & Bearing Assembly | Technical Basis: Forged alloy steel shaft mounted on oversized spherical roller bearings | Operational Benefit: Provides exceptional radial load capacity to withstand peak loads from uncrushable material, significantly reducing risk of catastrophic bearing failure. | ROI Impact: Increases mean time between failures (MTBF), protecting against major repair costs and extended outages.

Integrated PreScalping Grizzly | Technical Basis: Bolton heavyduty grizzly section with adjustable bar spacing | Operational Benefit: Bypass fines (<50mm) directly to the product conveyor, reducing unnecessary wear on jaw plates and increasing effective throughput of crushable material. | ROI Impact: Lowers wear part consumption and improves overall plant capacity efficiency.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Basic Jaw Crusher) | Primary Jaw Crusher Assembly Plant Solution | Advantage (% Improvement) |
| : | : | : | : |
| Availability (Uptime)| ~85%, frequent liner adjustments/blockages| >92%, with hydraulic clearing & quickwear systems| +8%+ more productive hours |
| Tons Per Maintenance Hour| High labor hours per ton for manual setting changes| Low labor hours; hydraulic adjustment reduces effort by ~80%| Labor efficiency improved by ~60% |
| Wear Life (Jaw Liners)| Standard manganese; life varies widely with abrasion| Workhardening Mn steel with optimized kinematics| +35% average improvement |
| Installation & Commissioning Time| 23 weeks with foundation work & alignment| 35 days on prepared pad; prealigned skid| Reduction of ~75% |

5. TECHNICAL SPECIFICATIONS

Model Designation: HDJC3648STM
Feed Opening: 36" x 48" (915mm x 1220mm)
Max Feed Size: 750mm Lump
Discharge Setting Range: 100mm 150mm (adjustable)
Approximate Capacity: 140 220 MT/hr (varies with ore characteristics & setting)
Drive Power Requirement: 100 HP / 75 kW electric motor (TEFC)
Total Plant Power: 125 HP / 93 kW (includes motorized feeder)
Main Frame Construction: Fabricated highyield strength steel plate
Jaw Plate Material: ASTM A128 Grade B3/B4 Manganese Steel
Skid Dimensions (LxWxH): Approx. 7m x 2 .8m x 3 .2m
Operating Weight: ~28,000 kg
Environmental Operating Range: 20°C to +45°C; dustproofed bearings and electricals.

6. APPLICATION SCENARIOS

MidScale Hard Rock Gold Mine, West Africa | Challenge: A mine using a traditional jaw crusher experienced weekly downtime due to blockages from occasional clay pockets in the quartz vein, coupled with a twoday process for manual jaw gap adjustment. This created inconsistent feed for their 20stamp battery.| Solution: Implementation of the HDJC3648STM assembly plant with hydraulic toggle system and integrated prescalping grizzly.| Results: Blockages cleared in under 10 minutes remotely. Discharge size adjustments completed in 1 hour versus 16 hours previously. The plant achieved a documented throughput increase of 18% due to reduced downtime and more consistent feed sizing for the stamps.

Artisanal & SmallScale Mining (ASM) Cooperative, South America | Challenge: A cooperative upgrading from manual hammers sought their first mechanized primary crusher but lacked extensive engineering support or budget for complex foundations.| Solution: Deployment of the skidmounted primary jaw crusher assembly plant on a compacted gravel pad.| Results: The plant was operational within 4 days of delivery. Simplified operation allowed existing personnel to manage it after basic training. Consistent coarse crushing improved the feeding and performance of their newly installed 5stamp mill unit.

7 COMMERCIAL CONSIDERATIONS

Our pricing structure is based on providing complete operational readiness:

Base Equipment Tier: Includes skidmounted crusher, drive motor/vbelts, starter panel, and integral prescalping grizzly.
Optional Features: Vibrating Grizzly Feeder (VGF) package; dust suppression system; automated lubrication system; advanced motor controls with softstart; spare parts starter kit.
Service Packages: Tiered offerings from basic commissioning supervision to comprehensive multiyear planned maintenance agreements including wear part inspections/replacements.
Financing Options are available through partner institutions tailored for capital equipment in extractive industries including leasetoown structures that align payments with project cash flow timelines

FAQ

Q1 What discharge size can this assembly plant achieve reliably?
A1 It is engineered specifically produce coarse product ideal ffor stamppmill feed Typically settings range from mm tto mm This ensures optimal particle sizefor efficient stamppmill operation

Q2 How does this handle wet or sticky ore that may cause clogging?
A2 Thhe integrated pre scalping grizzlly helps bypass fine sticky material Thhe hydraulic toggle system allows ffor quick safe clearing off any chamber blockages without manual intervention For consistently high clay content we recommend adding thhe optional vibrating grizzll yfeeder VGF package

Q3 What are thhe power requirements annd can it runn on generator power?
A3 Thhe total plant requires approximately kW We recommend grid or dedicated diesel generator power Soft start options are available tto reduce inrush current making it suitable ffor generator operation wwith proper sizing

Q4 What is thhe expected delivery timeline annd what site preparation is needed?
A4 Delivery typically occurs within weeks off order confirmation Site preparation requires aa level compacted pad capable off supporting thhe plants weight minimal civil works are needed due tto thhe skidd mounted design

Q5 Are training annd technical documentation provided ffor our operators?
A5 Yes Comprehensive operational manuals schematics annd onsite commissioning training are included wwith every purchase Additional operator annd maintenance training modules can be specified

Q6 What warranty coverage do you offer?
A6 We provide aa standard month warranty on manufacturing defects annd critical components like thhe main frame annd eccentric shaft Extended warranty coverage is available through our service packages

Q7 Can this crusher be integrated wwith our existing conveyor system?
A7 Yes Thhe assembly plant is designed wwith standardized discharge height andd can be adapted tto interface wwith most existing conveyor systems Dimensional drawings are provided ffor precise integration planning