Hover
Hover
Hover
Hover
Hover
Hover
Hover
Hover
Hover
Hover
Hover
Hover
Hover
Hover
30 TPH Gold Wash Plant – Mining Trommel
The IGR 3000 Trommel type Gold Washplant was designed for a nominal 30 tons/hour feed rate based on an alluvial type material with moderate clay contamination.
Material is loaded into the plant feed hopper through a static scalping grizzly with 75 mm bar spacing. Oversize is to be periodically removed manually from the grizzly. Undersize feed material is washed into the scrubber feed chute by water-jets strategically placed in the feed hopper and by a manually operated water monitor. Water is piped from an onboard water manifold system that supplies water to the complete plant from the customer’s primary water supply.
Material is scrubbed in this gold wash plant to let clays and silts dispersed into the slurry. Slurry is discharged over the double deck vibrating screen. Oversize (+10mm) from the vibrating screen is discharged via a chute to ground level where it can be removed by the customer’s mobile equipment or by the client’s conveyor system. Product from the bottom deck oversize (-10mm + 2mm) is discharged onto the sluice, complete with riffles and fiber mats, where coarse gold will be recovered.
The screen undersize (-2mm) is pumped from the screen undersize hopper to the concentrator feed box/splitter. The concentrator feed box services a dual purpose as it regulates feed to the concentrators by flowing excess slurry directly to the sluice when required and it serves as a manual by-pass system during the concentrator rinse cycle. Feed from the concentrator feed box flows directly into the twin i350 centrifugal gravity concentrators.
Tailings from the concentrator are directed to the inlet side of the sluice to aid the oversize material (-10mm +2mm) in flowing down the sluice to the final tails area. Concentrate from the twin i350 concentrators is directed to a wheeled storage tote which can be easily removed and towed to a final location for final upgrading and smelting. Concentrates from the sluice need to be removed periodically washed and added to the gravity concentrate.
- 75 mm – passes the grizzly and into the scrubber
- 10 mm + is rejected by the top level of the vibration screen
- 2 mm + to 10 mm – is fed to the high-efficiency sluice
- 2mm – is distributed to 2 x i350 Concentrators
Description
Specifically designed for Alluvial Material Including:
- Gravel
- Laterite
- Saprolite
- Moderate Clay
The IGR 3000 Wash Plant incorporates scrubber technology with world class Falcon /iCON Concentrators.
Scrubber VS Trommel
A scrubber is not a trommel and a trommel is not a scrubber. The two are quite different and quite inefficient when incorporated in the same mechanism. A rotating screen needs a relatively low RPM to allow the fines to pass through the screen. An effective scrubber needs a relatively high RPM to lift the material higher, turn the material over and to input energy into the scrubbing action between the larger rocks and the clay material. Comparatively, a scrubber will have at least twice the horse power as the same dimension and capacity trommel.
A scrubber is a high RPM ‘autogenous’ mill. A scrubber will rotate at 75% of the ‘critical RPM.’ The critical spped RPM is the RPM required for the material to cling to the wall and rotate with the drum without falling. A scrubber uses the large rocks to break up the finer material in the same way a ball mill uses steel balls to break up ore.
Our scrubbers are industrial duty: manufactured from the thickest steel, best liners (rubber or polyurethane) and highest quality construction available in the world.
Our Gold Washplant Equipment List
Equipment not Including in this Gold Wash Plant
Optional Equipment
- Oversize Conveyor.
- Process Water Pump.
- Concentrate Clean Up Shaking Table.
Wash Plant Capacity
- The IGR 3000 Plant is designed for a nominal 30 tons per hour of solids
- The true limit of the plant is 20 tph of 2mm- sand based on the capacity of the concentrators.
- The overall capacity is 30 tph total or 20 tph sand, whichever comes first.
The i350 Concentrator: The heart of this great gold washing system
When the supply pump is located near the concentrator a 2 HP centrifugal pump is generally sufficient. A 3” NPT connector is supplied at the concentrator. This connector reduces to the 2.5” feed hose internal to the machine. 10 tph solids at 20%/80% solids/water will gravity feed through this hose. The concentrator has the capacity for 15 tph solids, but may need to be fed by a pump to achieve this capacity.
Accessory Filters
Each concentrator arrives with a y-strainer installed in the plumbing manifold. This is only intended to protect the concentrator’s bowl from becoming ‘sanded’ with either sand or organics. This strainer is not sufficient to filter any measureable quantity of solids or organics from the water.
If you do not have a clean water supply, an external filter will be required. Irrigation type filters are economical and available around the world. 50 mesh is recommended. They have large filters and high capacities. Recommended brands are Jain, Amiad and API.
Slurry Feed Connection
It is important to feed a well mixed slurry to the concentrator. This is generally not an issue with alluvial mining, but with hard rock milled ore, it is possible for the slurry to ‘clump’ leading to poor gold recovery.
The solids capacities of the concentrators are specified in % solids by weight.
You can measure the % solids by volume and convert it with the table on the right.
First, collect a bucket of the feed slurry. Allow the solids to settle flat in the bottom of the bucket.
Measure the height of the solids from the bottom of the bucket. Measure the overall height of the liquids from the bottom of the bucket. Divide (height of solids / height of liquid) times 100.
This is the % solids by weight. As an important reference, note that 20% by volume is equal to 40% by weight.
Tailings Connection
Tails flow by gravity from the concentrator. When installing your concentrator you will have to consider if you have enough vertical fall after the concentrator for the tails to flow freely from the machine. Each concentrator has a 4” ‘victaulic’ fitting.
Common connections include standard PVC or flexible hose to direct the tails where you want them.
The iPump 1” and iPump 3” are common options used to move the tails up out of the pit and away from your work area.
Gold Concentrate Discharge
The concentrate discharge is directly under the bottom/center of the machine. While rinsing, the concentrates will discharge from here.
Common methods of collection include:
- Using a small bucket to collect the concentrates per batch
- Using a larger bucket or tank to collect concentrates each day
- Plumbing this discharge to an iPump when you have many machines in service
Skid Weldment with included Screen | Scrubber Base Frame w/Lower Concentrator Skid |
Lower Concentrator skid | Upper Concentrator Skid w/Assay Ports |
Grizzley Feeder Guard – 338 x 118 x 66 cm – 226 kgs | Grizzly Hopper Weldment with Assy pts |
Screen Skid Weldment w/Pump | 4 x 10 Sluice Box Assembly – 351 x 137 x 42 cm – 519 kgs |
Discharge Screen Chute # 8 – 145 x 137 x 92 cm – 213 kgs |  1.2m x 3.0m Scrubber – 353 x 170 d cm – 4874 kgs |
Water Manifold Crate – 320 x 120 x 96 cm – 464 kgs | 2 x i350 Concentrator Crates # 10 & 11 |
