Mineral Processing Laboratory

According to the objectives of the center, mineral processing laboratory is the main one of the center, which uses a variety of devices and equipment to study the various methods of mineral processing on different ores. Here different parts and equipment of mineral processing laboratory are described as follows:

Sample preparation

In this part, comminution and sample preparation are performed which consists of two jaw crushers with the sizes of small and large, one cone crusher, one roll crusher,  Planetary  Micro Mill PULVERISETTE (Disc pulverizer), A Y-blender, Wet and Dry Rotary Sample Splitter  for powder and pulp samples respectively, some chute riffles, three ring pulverizer devices (Model: LM2), Ball and Rod mills for wet/ dry grinding, vacuum and electric ovens and some balances. After preparation, samples are delivered to other processing parts.

                           

Indices determination

This part is equipped with indices determination devices consisting as follows:

  • Autogenous Media Competency Mill, Determination Ores Competency for Autogenously Grinding Circuits, with the mill size of 6 *1 feet
  • Bond Impact Tester (Crushability Index Tester)
  • Abrasion Index Test device, Determination of Bond Abrasion Index
  • Bond Rod Mill, Determination of Bond Rod Mill Grindability Index
  • Bond Ball Mill, Determination of Bond Ball Mill Grindability Index

 

 

                                                  

Determination of particle size distribution

In this part particle size distribution is determined by applying these following devices:

a) Laser Particle Size Analyzer; Laser particle size analyzer (LPSA) is the practical instrument for simple, rapid, and precise measurement of particle size in wet and dry methods (Mastersizer 2000S ( Hydro)- Scirocco (dry)). This instrument can provide statistical data of size distribution between 0.02 to 2000 µm.

b)  Cyclosizer; Model:  M12, Screen analyzer of material (4-50 micron)

c) Laboratory Hydro cyclone;

c-1) Manufacturer: Mozley- England, Model: MKII; Particle Size Classification

c-2)Manufacturer: Krebss- USA

d) Screen Analyzer 450 mm; Manufacturer: Labtech-Essa, Australia, Model: OST450; Application: Screen analyzer for dry material with big volume, Specification: Capacity 10 kg for fine material

Number of Screen: 6, Screen Diameter: 450 mm

e) Screen Analyzer 200 mm; Manufacturer: Retsch, Germany, Model:  AS200, Application: Screen analyzer for dry material, Specification: Capacity up to 1 kg, Screen Diameter: 200 mm

f) Ro-tab Screen Analyzer 450 mm; Manufacturer: W.S-Tyler, US, Model:  RX-29-10, Application: Screen analyzer for dry material using vibration & impact

g) Various sieves able to determine particle size from 20 µm to 10 cm.

 

 

Gravity Separation

In this part, minerals based on the difference between their specific gravities are separated physically.

a) Jig Separator; Manufacturer: Unal-Turky; Model:  Hartz, Application: gravity concentration of materials in wet method Capacity:  At least 3 kg for each test; Particle size of Feed: -10+1 mm, Changeable frequency with altering the piston position

b)Shaking Table; Manufacturer: Wilfely, England, Model:  13 B, Application: gravity concentration of materials in wet method, Capacity:  At least 3 kg for each test, Particle size of Feed: -3mm+0.075mm

c)Slime Table; Manufacturer: Mozley- England, Application: gravity concentration of fine materials in wet method

d)Knelson Separator; Manufacturer: Knelson Concentrator-Canada, Model:  KC-MD3, Application: gravity concentration of materials in wet method using centrifugal force, Capacity:  At least 12 kg for each test,  Maximum particle size of Feed: 1.7 mm, Cone Diameter: 3 in. Max. Solid rate:45 kg/hr

Max.water flow rate: 0.34 m3/hr

e)Air Table; Manufacturer: Oliver –US, Model:  30 DC, Application: gravity concentration of materials in dry method using Air, Capacity:  At least 10 kg for each test, Particle size of Feed: +30 mesh

Magnetic separation

In this part based on Minerals' magnetism, Ferromagnetic Minerals are separated from others physically.

a)Dry Low Intensity Magnetic Separator; Manufacturer: Master Magnet- England, Model: 12 PD 1, Application: Ferromagnetic Minerals Separation, Specification: Field Intensity: 1200 Gauss

Feed Particle Size: -3 mm +75 µm

b)Wet Low Intensity Magnetic Separator; Manufacturer: Box Mag Rapid- England, Model: KWD – 190 – 150, Application: Separation of Fine Ferromagnetic Minerals, Specification: Field Intensity: 1000 Gauss, Feed Particle Size: Finer than 500 µm

c)Wet High-Intensity (variable )High-Gradient Magnetic Separator; Manufacturer: Box Mag Rapid- England, Model: AL/4253/1, Application: Wet Separation of Paramagnetic Minerals, Field Intensity (max.): 15 kilo Gauss (with Matrix), Feed Particle Size: -0.5 mm

d)Disc Magnetic Separator; Manufacturer: Box Mag Rapid- England, Model: Log 1.4, Application: Dry Separation of Paramagnetic and Ferromagnetic Minerals; Specification: Field Intensity: Adjustable max. to 6000 Gauss; Feed Particle Size: -6 +200 mesh

e)Davis Tube; Manufacturer: Master Magnet- England, Model: Lab.T.T, Application: Determination of Magnetite Amount in Minerals, Industrial Dusts and Tails as a wet method, Specification: Magnetic Intensity (max.): 6000 Gauss

f)Isodynamic Laboratory Separator; Isodynamic Laboratory Separators make sensitive separations of minerals or other grains according to magnetic susceptibility, even of materials not usually thought of as magnetic.

g)SATMAGAN Balance; Manufacturer: Corrigan, Canada, Model: 135, Application: Measurement of the magnetic moment of the samples.

 

Flotation

In this part based on physical and chemical properties, valuable minerals are floated and recovered.

a)Zeta Potential Analyzer; Manufacturer: Micromeritics, USA, Model: 1202, Application: Determination of the zeta potential of minerals

b)Denver Flotation Machine; Flotation unit, Manufacturer: Denver, England, Model: D12, Laboratory

Application: Laboratory flotation tests, Specification: Volume: 1-5 liters, Motor speed: djustable, Self-air dispersion

Hydrometallurgy

In this part, based on chemical properties, metals can be extracted from solution.

 

  • High Pressure Auto clave; Manufacturer:‍Buchi, Swiss., Model: Limbo 350, Application: High pressure leaching tests, Specification: Volume: 2 liters, Agitation Speed range: 0-3000 rpm, Temperature: maximum 350 ºC, Vessel material: stainless steel 316 L, Pressure: 350 bars, Temperature, Pressure and agitation speed are adjustable

 

  • Auto clave; Manufacturer:‍Buchi, Swiss., Model: bmp 280, Application: High pressure leaching tests, Specification: Volume: 5 liters, Agitation Speed range: 0-3000 rpm, Temperature: maximum 300 ºC, Vessel material: stainless steel 316 L , Pressure: 60 bars, Temperature, Pressure and agitation speed are adjustable

 

 

  • Rotary Evaporator; Manufacturer:‍Heidolph, Germany., Model: Laborata 4003 Control, Application: liquid purification and distillation, Specification:volume: 1000 ml, Speed range: 20-270 rpm, Temperature: 20-180 ºC, Evaporating power: 1000ml H2O/h, Cooling area: 1200 Cm2

 

 

  • Bottle Roll Unit; Manufacturer:Danesh faravaran, Iran.,Application: Laboratory cyanidation tests, Specification: Capacity: 12 bottles, Time and speed are Adjustable
  • Leaching Reactor; Manufacturer:IKA, Germany., Model: LR – A1000, Application: atmospheric leaching tests, Specification: Volume: 1 liters, Agitation Speed range: 14-530 rpm, Temperature: maximum 300 ºC, Temperature and agitation speed are adjustable and gas can be injected.
  • Cyanidation unit; Manufacturer:Termogama, Australia., Application: gold bearing mineral, cyanidation tests, Specification: Agitator Numbers: 6, Agitation Speed: Adjustable

Pyrometallurgy

This part consists of various furnaces as follows.

 

  • Electrical High-Temperature Furnace; Manufacturer: Nabertherm- Germany, Model: HT16/18, Specification: Internal dimension: 200mm*300*mm260 mm, Maximum temperature: 1800 °C

Temperature Control System:  Nabertherm C42 (programmable), Power: 12 kW.

  • Muffle Furnace; Manufacturer: Lenton – England, Model: AWF 12/25, Specification: Internal dimension: 250*250*400 mm, Maximum temperature: 1200 °C, Temperature Control System: Eurotherm 2416CC (programmable), Power: 6 kW.
  • Muffle Furnace; Manufacturerr: Lenton – England, Model: AWF 12/5, Specification: Internal dimension: 200 mm*150 mm*150 mm, Maximum temperature: 1200 °C, Temperature Control System: Eurotherm 2416 (programmable), Power: 2 kW.
  • Muffle Furnace; Manufacturer: Lenton – England, Model: AWF 13/42, Specification: Internal dimension: 305 mm*305 mm*450 mm, Maximum temperature: 1300 °C, Temperature Control System: Eurotherm 2216e (programmable), Power: 8 kW
  • Vertical Tube Furnace, Manufacturer: Lenton – England, Model: LTF 12/50/300, Specification:

Tube inside diameter: 50 mm, Heated length: 300 mm, Maximum temperature: 1300 °C, Temperature Control System: Eurotherm 2416 (programmable), Power: 1.5 kW.

 

  • Horizontal Tube Furnace; Manufacturer: Lenton – England, Model: LTF15/75/450, Specification:

Tube inside diameter: 75 mm, Heated length: 450 mm, Maximum temperature: 1500 °C, Temperature Control System: Eurotherm 2416 (programmable), Power: 5.5 kW.

 

  • Muffle Furnace; Manufacturer: Lenton – England, Model: UAF 15/27, Specification: Internal dimension: 290*270*340 mm, Maximum temperature: 1500 °C, Temperature Control System Eurotherm 2419 (programmable), Power: 12 kW.
  • Vacuum Oven; Manufacturer: Heraeus- German, Model: VT 6025, Application: Fast Drying of Wet Sample, Specification: Volume: 25 Liters, Temperature: 200 °C, Vacume: Up to 100 mbar
  • Electric Oven; Model: AF 1200C, Specification: Volume: 1200 Liters, Dimensions: 1000*1200*1000 mm, Control System of iTRON Manufactured by Jumo, German, Four Level Wheeled Cage, Digital Control System With four Programs, Shinko Model, Japan., Temperature: Max. 250 °C

 

  • Electric Oven; Manufacturer: Atbin- Iran, Model: AF2200C, Specification: Volume: 2170 Liters

Dimensions: 1700*850*1700 mm, Control System of iTRON Manufactured by Jumo, German, Six Level Wheeled Cage, Digital Control System With four Programs, Shinko Model, Japan., Temperature: Max.  250 °C

  • Electric Oven; Manufacturer: Lenton- England, Model: WF120, Specification: Volume: 128 liters

Dimensions: 492*500*520 mm, Control System of TDE-O Eight Level, Temperature: Max. 300 °C With Hot Circulated Air.

 

Other devices

 

  • Gas Pycnomatic; Manufacturer: POROTEC, Germany, Model: ATC-01020001-02, Application: Densitymeasurement of dry powder samples, Specification: - Sample Weight: 100 g, Sample Type: Dry powder, Temperature Control Range: 18-35 oC , Temperature stability: +/-0.01 oC (at 20 oC), Pressure Transducer Range: From vacuum up to 2.5 bar absolute reading
  • DO2 Meter; Manufacturer: TPS Pty, Australia, Model: M/N/D, Application: Measurement of the Oxygen Dissolved in Solutions, Specification: Range of Measurement: in saturated conditions % (0-199.9) (0-19.99 ppm).
  • Vertical pressure filters; Manufacturer: Larox Co. – Finland, Application: Factor affecting on filtration process, Specification: Tank volume: 100 liter, Maximum Filter cake weight: 4 kg/test, Having washing and air drying
  • Vacuum Filter; Manufacturer: ‍Denver Sala- England, Application: pulp dewatering, Specification: Filter dimension (r*h): 305 mm*75 mm, Diameter: 305 cm, Area: 465 cm3, Volume: 5 liter

 

  • Pressure Filter; Manufacturer: ‍Danesh Faravaran – Iran, Application: pulp dewatering, Specification:

Diameter: 20 cm, Height: 30 cm

 

  • pH and EH measurement device