PL424672A1 - Method for assessment of grain fractions and active surface of metal ores by optical method - Google Patents

Method for assessment of grain fractions and active surface of metal ores by optical method

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Publication number
PL424672A1
PL424672A1 PL424672A PL42467218A PL424672A1 PL 424672 A1 PL424672 A1 PL 424672A1 PL 424672 A PL424672 A PL 424672A PL 42467218 A PL42467218 A PL 42467218A PL 424672 A1 PL424672 A1 PL 424672A1
Authority
PL
Poland
Prior art keywords
axis
active surface
detector
metal
grain fractions
Prior art date
Application number
PL424672A
Other languages
Polish (pl)
Inventor
Sebastian Budzan
Marek Pawełczyk
Szymon Ogonowski
Original Assignee
Politechnika Śląska
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Politechnika Śląska filed Critical Politechnika Śląska
Priority to PL424672A priority Critical patent/PL424672A1/en
Publication of PL424672A1 publication Critical patent/PL424672A1/en

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  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Sposób oceny frakcji ziarnowych oraz powierzchni czynnej rud metali metodą optyczną będących wynikiem suchej przeróbki materiałów sypkich z wykorzystaniem detektora optycznego pracującego w zakresie światła widzialnego polega na tym, że badaną próbkę materiału (4) umieszcza się w komorze roboczej analizatora w osi (3) detektora optycznego (1), a następnie oświetla się ją za pomocą co najmniej jednej pary oświetlaczy (7, 8) rozmieszczonych symetrycznie wokół osi (3) detektora (1), przy czym kąt mocowania oświetlaczy (7, 8) wynosi 0 - 90 stopni przez wzajemne zależności osi (3) detektora (1) i osi (11) oświetlacza (7) oraz osi (3) detektora (1) i osi oświetlacza (8). Nastawia się stopień otwarcia większy od 60% i mniejszy od 90% dla uwidocznienia powierzchni czynnej metalu na powierzchni ziaren rudy metalu lub mniejszy od 60% ustawiony tak, aby uzyskać maksymalną głębię ostrości dla oceny frakcji ziarnowych. Zarejestrowane obrazy poddaje się przetwarzaniu i analizie wykorzystując operacje poprawy kontrastu, segmentacji adaptacyjnej bądź manualnej, morfologii - erozji i dylatacji, separacji połączonych ziaren, ostatecznie dokonując klasyfikacji frakcji ziarnowych, bądź oceniając powierzchnię czynną metalu.The method of assessing the grain fractions and the active surface of metal ores by optical method resulting from dry processing of loose materials with the use of an optical detector operating in the visible light range consists in placing the tested material sample (4) in the working chamber of the analyzer along the axis (3) of the optical detector (1), and then it is illuminated by at least one pair of illuminators (7, 8) arranged symmetrically around the axis (3) of the detector (1), the mounting angle of the illuminators (7, 8) being 0 - 90 degrees by mutual relations between the axis (3) of the detector (1) and the axis (11) of the illuminator (7) and the axis (3) of the detector (1) and the axis of the illuminator (8). An opening degree greater than 60% and less than 90% is set to show the active surface of the metal on the grain surface of the metal ore, or less than 60% adjusted to obtain the maximum depth of field for the evaluation of the grain fractions. The recorded images are processed and analyzed using operations of contrast improvement, adaptive or manual segmentation, morphology - erosion and dilatation, separation of connected grains, finally classifying grain fractions or assessing the active surface of the metal.

PL424672A 2018-02-26 2018-02-26 Method for assessment of grain fractions and active surface of metal ores by optical method PL424672A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL424672A PL424672A1 (en) 2018-02-26 2018-02-26 Method for assessment of grain fractions and active surface of metal ores by optical method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL424672A PL424672A1 (en) 2018-02-26 2018-02-26 Method for assessment of grain fractions and active surface of metal ores by optical method

Publications (1)

Publication Number Publication Date
PL424672A1 true PL424672A1 (en) 2019-09-09

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Family Applications (1)

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PL424672A PL424672A1 (en) 2018-02-26 2018-02-26 Method for assessment of grain fractions and active surface of metal ores by optical method

Country Status (1)

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PL (1) PL424672A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207001A (en) * 1976-05-24 1980-06-10 The University Of Queensland Particle size analyzer
JPS5759143A (en) * 1980-09-26 1982-04-09 Nippon Kokan Kk <Nkk> Measuring method for grain size of granular material
WO1996003226A1 (en) * 1994-07-25 1996-02-08 Oseney Limited Optical inspection system
CN107478550A (en) * 2017-09-21 2017-12-15 湖北省天门市鹰飞拓检测仪器有限公司 The triple channel emerging system of real-time detection of particles size and property

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207001A (en) * 1976-05-24 1980-06-10 The University Of Queensland Particle size analyzer
JPS5759143A (en) * 1980-09-26 1982-04-09 Nippon Kokan Kk <Nkk> Measuring method for grain size of granular material
WO1996003226A1 (en) * 1994-07-25 1996-02-08 Oseney Limited Optical inspection system
CN107478550A (en) * 2017-09-21 2017-12-15 湖北省天门市鹰飞拓检测仪器有限公司 The triple channel emerging system of real-time detection of particles size and property

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