Griffiths, Derek

Kurth, H.

English

Engineering Conferences International

Engineering Conferences InternationalECI Digital ArchivesBeneficiation of Phosphates VII ProceedingsSpring 4-2-2015Suitability of Geoscan-M elemental analyser forphosphate rockH. KurthScantech InternationalDerek GriffithsScantech InternationalFollow this and additional works at: http://dc.engconfintl.org/phosphates_viiPart of the Materials Science and Engineering CommonsThis Conference Proceeding is brought to you for free and open access by the Proceedings at ECI Digital Archives. It has been accepted for inclusion inBeneficiation of Phosphates VII by an authorized administrator of ECI Digital Archives. For more information, please contact franco@bepress.com.Recommended CitationH. Kurth and Derek Griffiths, "Suitability of Geoscan-M elemental analyser for phosphate rock" in "Beneficiation of Phosphates VII",P. Zhang, FIPR; J. Miller, Univ. of Utah; L. Leal, Univ. of Sao Paolo; A. Kossir, OCP Group; E. Wingate, Worley-Parsons Services PtyLtd. Eds, ECI Symposium Series, (2015). http://dc.engconfintl.org/phosphates_vii/20Suitability of Geoscan-M elemental analyser for phosphate rock H. Kurth Scantech International Pty Ltd.  Presented by: Derek Griffiths Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia Contents 1. Introduction 2. Geoscan-M using PGNAA 3. Applications and Benefits in Phosphate 4. Examples of performance 5. Summary  Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia 1. Introduction  Real time, continuous, through belt, multi-elemental analysis of conveyed flows enables operators to measure & control feed & product quality  Advanced technology is proven  Applications – monitoring, bulk sorting, blending  Benefits and paybacks  Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia Prompt Gamma Neutron Activation analysis  Cf-252 source (under conveyor belt) emits neutrons  Neutrons absorbed by elements in conveyed material  Each element emits a unique gamma ray spectrum  BGO detector array (over conveyor) measures gamma rays   Operating 10+ years in minerals sector (>50+ installations, incl. P)  Combined with microwave moisture measurement  Multi-elemental results reported every 2 – 5 minutes  2. Geoscan-M using PGNAA Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia   5.61 1.27 64.96 0.07 0.15 0.03 3 85 33 5 30 8 24 24 22 9 12 6 438 55 7 9 1 60 3 2 11 6 6 69 106 1 1 73 7 157 12 57 08 5 98 4SiO2 % Al2O3 % Fe % TiO2 % K2O % Mn % How Geoscan Works Geoscan-M using PGNAA  Fully transmissive   Continuous   Non-contact  Mineralogy, particle size, dust, moisture no effect  Belt scale input for tonnage weighted results  Moisture measured (TBM)  Safe – can stand next to operating unit 024681012141618202.48 3.48 4.48 5.48 6.48 7.48 8.48Gamma Ray Counts Gamma Ray Energy (MeV) Typical analysis spectrum Fe  Ca Si C Mg Cl C Al K S Na Ti Mn  Geoscan-M using PGNAA Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia Geoscan-M TBM Moisture Monitor Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia Geoscan-M using PGNAA Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia 3. Applications and Benefits in Phosphate  Measure beneficiation feed quality for plant control   Sort phosphate rock onto stockpiles, remove waste   Blend to improve quality consistency  Blend into acid reactor feed  Control sulphuric acid addition to acid reactor based on feed rock chemistry to maximise P2O5 recovery & Ca to gypsum Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia 4. Examples of performance Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia North African sedimentary phosphate rock Examples of performance Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia North American sedimentary phosphate rock Elements Min Max Expected Precision P2O5 20 35 0.71 Al2O3 0.5 2 0.25 Fe2O3 0.5 2 0.09 CaO 40 50 0.38 MgO 0.2 1 0.15 SiO5 2 10 0.28 Examples of performance Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia Conclusion  “The Geoscan-M has shown excellent results on the ….. phosphate ore as expected from Scantech products.  Scantech welcomes site to provide their laboratory report for these ore samples so that the Geoscan-M results can be regenerated and optimised with respect to site laboratory results.  The results demonstrate that the Geoscan-M is suitable for quality control at this site”.  Elements Min Max Expected Precision P2O5 17 25 0.42 MgO 0.5 6 0.44 SiO2 0.2 10 0.35 CaO 43 52 0.38 Middle Eastern sedimentary  phosphate rock Examples of performance Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia Russian  igneous  phosphate  ore Elements Min Max Expected Precision P2O5 3 10 0.38 SiO2 6 11 0.66 Al2O3 1 3 0.45 Fe 15 35 0.80 CaO 14 24 0.95 MgO 11 14 0.60 S 0 1 0.10 TiO2 0 1 0.08 Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia %P2O5 in Phosphate Rock (-6mm screening)252627282930313233343525 26 27 28 29 30 31 32 33 34 35LaboratoryGEOSCANTMStd Error = 0.56%Correlation = 94.6%%CaO in Phosphate Rock (-6mm screening)484950515253545548 49 50 51 52 53 54 55LaboratoryGEOSCANTMStd Error = 0.39%Correlation = 93%Examples by element Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia %SiO2 in Phosphate Rock (-6mm screening)1234567891 2 3 4 5 6 7 8 9LaboratoryGEOSCANTMStd Error = 0.31%Correlation = 99%%MgO in Phosphate Rock (-6mm screening)0.00.20.40.60.81.01.20.0 0.2 0.4 0.6 0.8 1.0 1.2LaboratoryGEOSCANTMStd Error = 0.12%Correlation = 84%Examples by element Examples of performance Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia Examples of performance Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia • Analysers installed in North America & North Africa • Applications: phosphate rock feed to beneficiation for ore blending, bulk sorting to stockpiles & acid reactor feed • Performance guarantees (elements) reduce customer risk • Pay back <6 months on acid digest application • YR1 technical support included to optimise performance, service engineers located in key regions Examples of performance - compelling evidence of benefits Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia  On-line spectrometry has been one particularly fruitful technology that has helped the US phosphate industry to innovate, cut costs, improve efficiency and reduce environmental impact.   “FIPR has also long championed the potential for on-line chemical analysis for improving the performance of phosphate beneficiation plants.”  A US fertilizer company uses “analysers for quality control purposes at one of their beneficiation plants and is saving several million dollars annually as a result.”  quotes from Patrick Zhang, beneficiation and mining research director, FIPR, in Fertilizer International 465: March-April 2015 issue. 4. Summary  Technology is proven - safe, reliable, accurate  Representative system measures real time on-belt   Remove waste increments from feed  Bulk sort & blend phosphate rock –> consistent feed  Improve process control & efficiency –  proven benefits  Reduces operating costs, short payback (<6 months)  Maximise P2O5 recovery, acid consumption & Ca removal Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia  Further information:  www.scantech.com.au h.kurth@scantech.com.au   Suitability of Geoscan-M elemental analyser for phosphate rock – Beneficiation of Phosphates  VII,  March 29 – April 3, 2015. Melbourne, Australia 

Suitability of Geoscan-M elemental analyser for phosphate rock

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Suitability of Geoscan-M elemental analyser for phosphate rock

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