QEMSCAN® 650\650F

A laboratory-based, automated petrography analyzer widely used both in geoscience institutes and mining.


QEMSCAN® is a fully automated, non-destructive, micro-analysis system that provides rapid, statistically reliable and repeatable, mineralogical, petrographic and metallurgical data, from virtually any inorganic, and some organic, materials. It is used in the mining industry for mineral exploration, ore characterization, and mineral process optimization applications. The oil and gas industry utilizes QEMSCAN to reduce risk and improve extraction, based on knowledge derived from the micro-analysis of drill cuttings and cores. The coal industry is applying automated analysis of coal, pulverized fuel and coal combustion products, to better understand coal combustion and waste utilization.


Industry domains:

  • Basic and precious metals production, minerals used in industry
  • Oil and gas exploration and extraction
  • Energetics- coal and coal`s ashes investigation
  • Construction- cement and stressed rock investigation
  • Ecology- dust and soil investigation
  • Agroindustry- soils investigation
  • Criminalistics- crime scene investigation
  • Astrogeology

Mining industry:

  • Ore characterisation
  • – Production zones determination
  • – Geometallurgic properties characterisation
  • Facilities and optimal production properties determination
  • – Conditions of ore elaboration analysis both for large and small scaled production
  • – Optimal milling conditions determination
  • Metals extraction
  • – Consentrate analysis
  • – Effective ore mixing accomplishement
  • – A possibility of avoiding metallurgically poor ores
  • Coal and it`s ashes analysis
  • – Coal`s ashes mineralogy
  • – Dust mineralogy

Oil and Gas exploration and extraction

  • Minerals stratigraphy
  • Rocks stratigraphy
  • Porosity evaluation
  • Rock grains density
  • Diagenic structure analysis

Minerals properties general analysis

  • Grains analysis
  • автоматизированная классификация минералов и фаз Minerals and their phases automated classification
  • распространенность минералов Minerals distribution
  • элементный состав Elements construction
  • структура минералов, частиц и руд Rocks, grains and minerals texture
  • минеральная ассоциация Mineral associations
  • Seaching for poorly connected and not connected mineral particles
  • Determination of grains and particles size, form and density

QEMSCAN opportunities:

  • Scanning electron microscope Quanta 650F
  • Two XRF SDDs
  • iDiscover™ Software for mineral analysis
  • Automated data collection, analysis and review
  • Specialised sample holder capable of holing 14 samples with the 30 mm diameter
  • Materials for studying

iDiscover™ Software

  • iMeasure software for measurement
  • SEM and EDS control
  • Images processing and classification tools
  • Mineral database control
  • iExplorer software for data exploration
  • Database review both in table and graphic form
  • Datasets comparing, combining and filtering
  • Minerals grouping
  • Modal analysis and quantity analysis
  • определение гранулометрического состава Grain size distribution and structure
  • минеральные ассоциации, инклюзии и свободные частицы Mineral associations, inclusions and liberated particles
  • Ore`s quality theoretical curves
  • Parameters of grains density and form distribution
  • встроенный вспомогательный редакторSupporting SIP redactor included
  • Phases classification protocols construction and redaction

Possible measurements types

  • General mineralogical analysis
  • Particular grains analysis
  • Particular minerals searching
  • Tracing admixtures searching
  • Images getting
  • Elements mapping and quantity analysis
  • Thin sections and rock parts holders
  • Special holders manufacturing

Scanning electron microscope specifications:

Electron optics
Superbright and superstable source based on Shottke`s field emission
Beam average stability: < 0.4 % / 10 hours
After-evacuation fast recovery – average time is less then 15 minutes

Detectors
two-segmented semiconducting BSED
SED, Everhart Thornley & low-vacuum SED (LFD) infrared camera

Vacuum
High vacuum working mode
Low vacuum working mode (from 10 to 130 Pa)
Natural enviroment working mode (from 1 to 4000 Па), ESEM
1 x 240 h/p turbomolecular pump, 2 foreline pumps

Resolution
1.2 nanometers @ 30 kV (SE)
2.5 nanometers @ 30 kV (BSE)
Accelerating voltage from 200 V to 30 kV
Probe current up to 100 µA, smoothly regulatable

Camera
Width 379 mm
Working distance 10 mm
XRFS observation angle 35˚
Equiped with EBSD, EDS and WDS detectors

Sample stage
X-Y = 150 mm
Z = 65 mm
T from – 5˚C to + 70˚C
R = 360˚, continuous

System controls
32-bit Windows® XP SP 2 , keyboard, optic mouse

Images output to two 19″ LEDs,

SVGA 1280 x 1024

EDS:

Detector type: Silicon drafing domains (SDD) with light elements scanning opportunity
30 мм² active zone with an option of several detectors installtion
Energy resolution: 175 eV (Mn) with 8*10^5 counts per second (Au)

Ultra fast impulses processing (4*10^5 counts per second)

Using fully-inegrated equipment and software, QEMSCAN defines most of rock- and ore- forming minerals on the basis of backscattered and secondary electrons mix with electrically-inducated secondary X-Ray radiation. It is possible to explore many different types of samples, such as impregnated with resin polished thin sections, polished thick sections, polished pieces of samples, well core and even particles on SEM membrane ore filtering paper. You can determine a wide range of petrographical characteristics, such as modal ratio of minerals, granulometric construction, phase inclusions, ore type, litotype, porosity, liberated particles occurense, particles fre area, particles density- and this is not the wull list. Fiels Emission cathode of QEMSCAN 650F superiors the wolfram one in such applications as determining and investigating micrometer sized particles due to it`s greater resolution and a greater detalisation of sub-micrometer sized particles of rocks and it`s structure features like porosity and cracks (using secondary electrons).