PRECIOUS METAL ASSAY LABORATORY
- Introduction to Assaying
- The assaying process is a necessary step to determine the quantity of precious metals present in an alloy.
Cupellation is one operation of the assay process in which a sample of gold, wrapped in lead foil, is melted
in a special crucible known as a cupel: this cupel has the capacity of absorbing the non-precious metals
contained in the gold alloy. The weight of the gold alloy sample is usually about 250/1000.
Although this is the most ancient method to determine the purity of an alloy, assaying by means of
cupellation gives greater precision than more modern methods (fluorescent or x-ray spectrophotometry)
and is considerably less expensive.
Laboratory lay-out
| LEGEND | ||||
|---|---|---|---|---|
| 1 | Electronic analytic scale AG285 | 2 | Anti vibrating table TAV/A | |
| 3 | Bench drill TRB/A | 4 | Cupellation furnace FCOPP/A | |
| 5 | Annealing unit MSLR/B | 6 | Separation hood CS/B | |
| 7 | Fume scrubber TLF/500 | |||
THE ASSAY LABORATORY
WEIGHING THE SAMPLE
ELECTRONIC ANALYTIC BALANCE TYPE ABT220
- Weight range : from 0 to 82 gr ( indicates up to five decimal figures )
- Weight range : from 0 to 220 gr ( indicates up to 4 decimal figures
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 3.900,00 | € 0.00,00 | € 3.900,00 |
BENCH DRILL TYPE TRB/A
- Max. capacity to drill : 10 mm
- Speeds : n°4
- Spindle speeds : 450/rpm
- Ground base dimensions : 230x270 mm
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 500,00 | € 0.00,00 | € 500,00 |
ANTI-VIBRATING TABLE TYPE TAV/A.
- Overall dimensions : 890x710x800 mm
- Weight : 76 Kg
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 1.080,00 | € 0.00,00 | € 1.080,00 |
CUPELLATION
CUPELLATION FURNACE TYPE FCOPP/E
- Max. working temperature : 1350°C
- Silicon carbide muffle : 155x205x80 mm
- Number of cupels : n°12 diam 25 mm
- Resistances : ceramic
- Power : 8.5 Kw
- Dimensions : 830x950x1850 mm
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 4.500,00 | € 0.00,00 | € 4.500,00 |
| 12/L | 1000 | Nr | CUPELS N. 1 (22X19) |
€ 0,61 | € 610,00 |
| 13/L | 1000 | Nr | CUPELS N°2 (26X22) |
€ 0,63 | € 630,00 |
| 19/L | 1 | Nr | PINCERS TO REMOVE CUPELS |
€ 36,40 | € 36,40 |
| 20/L | 1 | Nr | LONG KEVLAR GLOVES | € 37,10 | € 37,10 |
ANNEALING
MACHINE FOR THE TREATMENT OF CUPEL BALLS TYPE MSLR/BE
- Power supply : three phase
- Total power : 1.5 Kw
- Water consumption : 1-2 lt/1’
- Dimensions : 750x450x1300 Kg
- Weight : 120 Kg
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 3.900,00 | € 0.00,00 | € 3.900,00 |
ACID ATTACK
SEPARATION HOOD TYPE CS/C
- Number of 6 place ovens : n°2
- Power : 4 Kw
- Dimensions : 1150x650x1820 mm
- Weight : 90 Kg
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 3.300,00 | € 0.00,00 | € 3.300,00 |
| 11/L | 6 | Nr | BEAKERS FOR FS6/A OVENS | € 14,70 | € 88,20 |
|---|
SCRUBBING OPERATION
NEUTRALIZATION TOWER FOR ACID FUMES TYPE TLF/500e
- Power : 0.25 Kw
- Overall dimensions : 653x700x2165
- Weight : 65 Kg
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 3.000,00 | € 0.00,00 | € 3.000,00 |
| 16/L | 10 | KG | LEAD SHEET |
€ 13,90 | € 139,00 |
| 17/L | 1 | NR | ASSAY CARRYING TRAY |
€ 25,70 | € 25,70 |
| 18/L | 1 | NR | BEAKER DRAINER |
€ 119,30 | € 119,30 |
| 23/L | 10 | NR | HORSE HAIR BRUSH FOR CUPEL DIAM. 10 MM |
€ 7,60 | € 76,00 |
| 24/L | 2 | NR | GLASS CONTAINER FOR NITRIC ACID |
€ 71,70 | € 143,40 |
| 25/L | 1 | NR | GRADUATED CYLINDER 100 CC |
€ 20,00 | € 20,00 |
| 26/L | 1 | NR | GRADUATED CYLINDER 250 CC |
€ 25,70 | € 25,70 |
| 29/L | 1 | NR | CUPEL TRAY TO DRY ASSAYS | € 33,60 | € 33,60 |
FOUNDRY
MEDIUM FREQUENCY INDUCTION MELTING FURNACE
TYPE FIM/7NT
The furnace is ideal to melt precious metals. All ITALIMPIANTI ORAFI induction melting furnaces are
fitted with static frequency converters.
A high efficiency of the electrical output that drastically reduces electricity consumption, maintaining the
production rate, is obtained by the frequency conversion system used.
The modular construction of the electric circuit board greatly simplifies maintenance operations and
guarantees high reliability even in the most demanding working conditions.
The highest technical standards used to design the inductors along with the modular construction and the
use of only high quality materials guarantee maximum production even in the worst conditions.
Technical Data
- Rapid interchangeability of the crucible
- Protection of the metal while melting by an inert gas
- Manual extraction of the crucible using the appropriate pincers
- Automatic temperature control of the metal
- Absorbed power : 7 kW
- Power output : 6.5 kW
- Required quantity of the cooling water : 15 lt/min
- Capacity of the crucible : 8.5 Kg of Au
- Melting time : 15 minutes
- Dimensions : 485x510x915 mm (LxWxH)
- Weight : Approx. 190 Kg
⇒Display monitoring of the working parameters of converter as tension and absorbed power
⇒ Computerised alarm diagnostics to sensor as many as 12 alarms or warnings which the worker must take
note of for the system to work properly. Instructions and advice are shown on the display.
⇒ Closed ring power regulation which allows the system to absorb the set power regardless of the quantity
and type of metal to melt.
⇒ Three phase power-supply transformer :
- Allowed fluctuation of the electrical mains : +/- 10%
⇒ Pulse stirring function for special alloys
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 10.000,00 | € 0.00,00 | € 10.000,00 |
| 97/A | 10 | NR | GRAPHITE CRUCIBLE - 8 KG AU | € 72,70 | € 727,00 |
GRAIN PRODUCTION TANK TYPE RPG/E
The container is used both for the production of metal balls and of
fine sand (dimensions : 1-2 mm3) used for refining.
It is made entirely out of stainless steel and is cylindrical in shape. It
can be easily tilted to recover the grains. It is also fitted with a
centrifugal pump to circulate the water as well as to empty the tank.
TECHNICAL DATA
- Power supply : three-phase
- Power : 0.4 Kw
- Capacity :150 lt
- Overall dimensions : 900x900x1200mm (length-width- height)
- Weight : 50 Kg
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 3.400,00 | € 0.00,00 | € 3.400,00 |
| 7/H | 10 | Nr | CRUCIBLE+HOLDER RPG/E 1 HOLE | € 46,20 | € 46,20 |
REFINING TUMBLER UNIT
TYPE IAO/BR25
Aqua regia gold “ Refining Tumbler ” is a new technology compared to the static refining plants.
This refining system consists a rotating polypropylene barrel with a capacity of about 25 litres (acids plus gold
grains), inclined to 25° and continuously rotated by means of a special motor, with the possibility to adjust also
the speed rotation.
This continuos rotation forces the gold grains to continually rub against each other thus reducing the
dissolution time.
The maximum daily quantity which you can refine every day is of 6 kg of gold grains getting a final
gold purity of 999,5/1000 (minimum).
It is a multi-purpose unit as it can refine gold grains as well as casting scraps and some types of
precious ashes.
The plant is mainly made up of :
- Polypropylene hood containing with suction fan to be connected to a fume scrubber.
- Designed to the recover any acid losses.
- Rotating polypropylene barrel with a capacity of about 25 litres (acids plus gold grains), inclined to 25°
and continuously rotated by means of a special motor, with the possibility to adjust also the speed
rotation. - No. 2 Graduated tanks for HCl and HNO3. Acid transfer from the reactors by vacuum.
- No. 1 PPl tray where two 50 lt containers for HCl and HNO3 acids are stored.
- No. 1 Filter unit on wheels with a compressed air diaphragm pump to transfer the solutions.
- No. 1 Electrical board
Technical Data :
- Power supply : Single - phase.
- Power : 0,8 Kw
- Overall dimensions : 2600 x 1200 x 2500 mm. ( Length – Width - Height).
- Weight : 400 Kgs
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 22.500,00 | € 0.00,00 | € 22.500,00 |
| RX/PH | 1 | Nr | REDOX - PH KIT | € 745,00 | € 745,00 |
| 27/M | 50 | Kg | METABISULPHITE |
€ 1,80 | € 90,00 |
| 26/M | 500 | Nr | FILTER PAPER DIAM. 400MM | € 0,30 | € 150,00 |
NEUTRALIZATION TOWER FOR FUMES
MODEL TLF/750
The tower is used to neutralize fumes and remove organic substances. It is
built out of polypropylene sheets. A sprayer is installed inside the tower to
spray a 1000 mm thick layer of raschig rings.
In order to avoid drop dragging, a second 200 mm thick layer of raschig
rings has been placed upstream to the sprayer.
A neutralization solution container is placed beneath the tower. The
solution circulation pump has a capacity of 55 Lts/1' with a head of 6 m.
The suction fan has a max capacity of 300 m3/hour.
Technical data:
- Power supply : three-phase.
- Power : 0,95 Kw.
- Overall dimensions : 1350x1050x2800 mm (LxWxH)
- Loadless weight : 100 kg
- Working weight : 380 kg
- Capacity : 300 m3/h with 5”contact time
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 10.750,00 | € 0.00,00 | € 10.750,00 |
Ingot production
INDUCTION MELTING UNIT
FIM/12LING
The furnace is ideal to produce 1 kg Au ingots. All ITALIMPIANTI ORAFI induction melting furnaces
are fitted with static frequency converters.
A high efficiency of the electrical output that drastically reduces electricity consumption, maintaining the
production rate, is obtained by the frequency conversion system used.
The modular construction of the electric circuit board greatly simplifies maintenance operations and
guarantees high reliability even in the most demanding working conditions.
The highest technical standards used to design the inductors along with the modular construction and the
use of only high quality materials guarantee maximum production even in the worst conditions.
Technical Data
- Rapid interchangeability of the crucible
- Protection of the metal while melting by an inert gas
- Manual extraction of the crucible using the appropriate pincers
- Automatic temperature control of the metal
- Absorbed power : 10 kW
- Power output : 9.5 kW
- Required quantity of the cooling water : 20 lt/min
- Capacity of the crucible : 2 Kg of Au
- Melting time : 15 minutes
- Dimensions : 485x510x915 mm (LxWxH)
- Weight : Approx. 216 Kg
⇒ Display monitoring of the working parameters of converter as tension and absorbed power
⇒ Computerised alarm diagnostics to sensor as many as 12 alarms or warnings which the worker must take
note of for the system to work properly. Instructions and advice are shown on the display.
⇒ Closed ring power regulation which allows the system to absorb the set power regardless of the quantity
and type of metal to melt.
⇒ Threephase power-supply transformer :
- Nominal tension : depends on where the machines
- Allowed fluctuation of the electrical mains : +/- 10%
B. INGOT SOLIDIFICATION CONTROL UNIT
This special unit consists of :
- Water cooled work table on which the ingot moulds are placed
- Ingot solidification control unit – fitted with photoelectric cells and timed propane gas burner
| QT | PRICE | PACKING | TOTAL PRICE |
|---|---|---|---|
| 1 | € 19.000,00 | € 0.00,00 | € 19.000,00 |
Special Notes:
To properly quote a system(s), additionally, we need to know:
- Chemical composition of the material to be refined would be ideal.
- Initial form of the material as in old jewelry, fluvial dust, gold scraps, etc.
- Starting purity, including quantity of Au and Ag.
- Required final purity of the material (IE 999,5)
- Required final form you require(IE Ingots, Grain etc.). If you require Ingots, kindly specify the weight ( 1 Kg, 2 Kg, 500 Gr, Etc).
Limitations :
- Average silver content must not exceed 15-18 %
Disclaimer
- This is a standard setup (equipment can/will change according to specific requirements)
- This information is intended only as a guideline to those who want to have an approx. idea at investment levels for such a project with these daily quantities.
- Some refining situations may not require all the listed equipment, others will require additional units, which is why more technical infformation is required (i.e. materials, purities etc.) before issuing a formal quote.
- This webpage should not be considered a fomal quote.
- Optional Installation & Training
- € 960.00/Day plus flight/travel related expenses
Ex-Factory, Italy
Price: € 90.600,20
Check the latest exchange rate
Listed price subject to manufacturers price increases without notice.
