Mining Ore Microwave Digestion

  • Microwave Digestion Sample Preparation for Metals

    Closed vessel microwave digestion for metals analysis is routinely done by CEM systems in thousands of laboratories around the world It can be applied to a broad range of samples including soils, plastics, oils, pharmaceuticals, mining, wastewater, consumer products, foods, cannabis, and many more

  • Microwave digestion methods for preparation of

      Order Number Microwave digestion methods for preparation of platinum ore samples for ICP analysis Nowinski, Piotr, MS University of Nevada, Las Vegas, 1993

    Author: Piotr Nowinski
  • Microwave Digestion 911 Metallurgist

      Microwave Digestion Method Grind nonmetallic samples to pass 100 mesh Metal samples should be in the form of powder, fine shavings, turnings, or wire Place 0100 to 0500g samples in¬to 250mL polycarbonate bottles

  • Microwave Acid Digestion for the Determination of

      Wet digestion procedures for coal samples can be performed in closed or open vessels, using thermal energy or microwave radiation Microwave heating offers a considerable advantage in time over thermal heating Many microwaveassisted sample preparation systems offer multi106 Microwave Acid Digestion for the Determination of Metals

  • A Novel Approach to Fast Digestion of Rare Earth

      The shortcomings of hotplates can be improved upon using microwave systems, since sealed digestion containers mean higher temperatures can be achieved: digestion times are also reduced, between 20–60 min Furthermore, microwave digestion techniques tend to deliver much better REE recoveries when compared to hotplate digestions 4

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  • highperformance sample digestion of base

      For example, in a 1999 application note, CEM describes a twostep application for the digestion of chromite ore; the first step uses a mixture of sulfuric, phosphoric, and nitric acids, and the second step uses nitric acid, with a total digestion times of 2 h, ignoring the time needed for cool down, opening the digestion apparatus, adding the next charge of acid, closing the vessel and resetting it in the microwave

    Cited by: 7
  • Microwave Acid Digestion Method Note Compendium

      Weigh 05 g of the sample into the digestion vessel Add 10 mL of HNO₃ Gently swirl the mixture and wait approximately 15 minutes before closing the vessel Stage Temp (°C) *Ramp (mm:ss) Hold (mm:ss) Pressure (psi) * Power (W) Stirring 1 200 15:00 15:00 800 9001800 Off General Precaution Alfalfa

  • Comparison of Three Digestion Methods for Heavy

    heated at 150 ºC For microwave acid digestion procedures, an aliquot of samples to be digested (025 g) were placed in the clean Teflon dig estion v essel with concentr ate acid mixtur e HNO 3 : HF = 3:1 (A), v/v, for first microwave acid digestion procedure and HNO 3 : HF : HCl = 3:1:07 (B), v/v/v in the second micr owav e dig estion pr ocedur e

  • 微波溶样 自动电位滴定法测定铬矿石中三氧化二铬

      coupled with microwave digestion under highpressure was developed. The method has been tested by determination of Cr 2 O 3 in 2 National Standard Reference chrome ore samples with wide range of Cr 2 O 3 contents.

  • MultiAcid (4Acid) Digestions SGS

      Multiacid (4 acid) digestion is a very effective dissolution procedure for multielement analysis at trace levels of detection However, there can be a loss of volatile elements (eg B, As, Pb, Ge, Sb) during this type of digestion and some refractory minerals (especially oxide minerals) are only partially digested

  • Microwave digestion methods for preparation of

      The technique of microwave digestion was evaluated as a possible alternative to conventional sample preparation methods for the platinum ores prior to spectroscopic analysis Microwave energy used with aqua regia in closed vessel provides elevated pressure and rapid heating which significantly reduce digestion time The effect of

  • "Microwave digestion methods for preparation of

    The technique of microwave digestion was evaluated as a possible alternative to conventional sample preparation methods for the platinum ores prior to spectroscopic analysis Microwave energy used with aqua regia in closed vessel provides elevated pressure and rapid heating which significantly reduce digestion

  • Microwave Acid Digestion for the Determination of

      Wet digestion procedures for coal samples can be performed in closed or open vessels, using thermal energy or microwave radiation Microwave heating offers a considerable advantage in time over thermal heating Many microwaveassisted sample preparation systems offer multi106 Microwave Acid Digestion for the Determination of Metals

  • highperformance sample digestion of base

      For example, in a 1999 application note, CEM describes a twostep application for the digestion of chromite ore; the first step uses a mixture of sulfuric, phosphoric, and nitric acids, and the second step uses nitric acid, with a total digestion times of 2 h, ignoring the time needed for cool down, opening the digestion apparatus, adding the next charge of acid, closing the vessel and resetting it in

  • Microwave Digestion :: AntonPaar

    Thanks to the flexible platform concept you can configure Multiwave 5000 to be the best fit for your applications Multiwave 5000 provides: digestion of all kinds of samples (varying in difficulty or volume), acid leaching, microwave solvent extraction, evaporation, microwaveinduced oxygen combustion, UV digestion

  • Comparison of Three Digestion Methods for Heavy

    heated at 150 ºC For microwave acid digestion procedures, an aliquot of samples to be digested (025 g) were placed in the clean Teflon dig estion v essel with concentr ate acid mixtur e HNO 3 : HF = 3:1 (A), v/v, for first microwave acid digestion procedure and HNO 3 : HF : HCl = 3:1:07 (B), v/v/v in the second micr owav e dig estion pr ocedur e

  • MultiAcid (4Acid) Digestions SGS

      Multiacid (4 acid) digestion is a very effective dissolution procedure for multielement analysis at trace levels of detection However, there can be a loss of volatile elements (eg B, As, Pb, Ge, Sb) during this type of digestion and some refractory minerals (especially oxide minerals) are only partially digested

  • 微波溶样 自动电位滴定法测定铬矿石中三氧化二铬

      coupled with microwave digestion under highpressure was developed. The method has been tested by determination of Cr 2 O 3 in 2 National Standard Reference chrome ore samples with wide range of Cr 2 O 3 contents.

  • The digestion of phosphate ore in phosphoric acid

      Dissolution of calcium, phosphate, fluoride and rare earth elements (REEs) from a disc of natural fluorapatite mineral (FAP) in perchloric, hydrochloric, nitric, sulphuric and phosphoric acid solutions: A kinetic model and comparative batch leaching of major and minor elements from FAP and REFAP concentrate

  • Characterization and Gold Assaying Methods in the

    ICPOES analysis is reliable depending on the degree of liberation of gold during acid digestion The head grade for this type of low grade gold ore was found to be in the range of 031 g/t to 055 g/t where the gold was highly associated with aluminosilicate minerals Add to Cart

  • Microwave digestion methods for preparation of

      The technique of microwave digestion was evaluated as a possible alternative to conventional sample preparation methods for the platinum ores prior to spectroscopic analysis Microwave energy used with aqua regia in closed vessel provides elevated pressure and rapid heating which significantly reduce digestion time The effect of

  • "Microwave digestion methods for preparation of

    The technique of microwave digestion was evaluated as a possible alternative to conventional sample preparation methods for the platinum ores prior to spectroscopic analysis Microwave energy used with aqua regia in closed vessel provides elevated pressure and rapid heating which significantly reduce digestion

  • Microwave Digestion for Metals Analysis Milestone

      Most of these sample types require modern technologies of microwave digestion for metals analysis to remain in line with the ICPOES and ICPMS analysis standards Latest requirements in fast sample turnaround require lab instrumentation that can optimize the analytical workflow on every step from sample preparation to final result

  • (PDF) highperformance sample digestion of

      Metal ore digestion mining industry for faster and more costeffective methods for the determination of various elements in ores, while maintaining “ The microwave digestion

  • Microwave Digestion EPA Method 3052 on the

      Microwave Digestion EPA Method 3052 on the Multiwave 3000 Author: PerkinElmer Keywords: Microwave sample preparation provides an efficient and clean sample preparation for multielement analytical techniques such as ICPOES and ICPMS As Microwave assisted digestion has evolved, so have the methodologies EPA method 3052 is designed for the

  • ColdBlock Technologies Inc has new technology

      Mississaugabased startup ColdBlock Technologies Inc has unveiled a new sample digestion technology that looks to revolutionize the way mining companies and laboratories test ore samples Not only does ColdBlock’s technology improve sampling

  • phosphorus by microwave digestion and analysis by icp

      Hence, the Microwave Digestion was already done on the sample Just needed to turn on Phosphorus lines • Only 15% of samples needing Total P needed TKN as well Hence, 85% of the Total P Kjeldahl digestions could be eliminated • Microwave Digestion done in about 1 hour whereas the Total –P Digestion takes about 55 6 hours

  • The digestion of phosphate ore in phosphoric acid

      Dissolution of calcium, phosphate, fluoride and rare earth elements (REEs) from a disc of natural fluorapatite mineral (FAP) in perchloric, hydrochloric, nitric, sulphuric and phosphoric acid solutions: A kinetic model and comparative batch leaching of major and minor elements from FAP and REFAP concentrate

  • RTS3a Certificate of Analysis NRCan

      RTS3a is a sulphide ore mill tailings obtained from an unoxidized zone of the Waite Amulet tailings, north of Noranda, QC, CanadaThe raw material was donated by Xstrata Copper The raw material for RTS3a was obtained from the same source as its predecessor, RTS3

  • Characterization and Gold Assaying Methods in the

    ICPOES analysis is reliable depending on the degree of liberation of gold during acid digestion The head grade for this type of low grade gold ore was found to be in the range of 031 g/t to 055 g/t where the gold was highly associated with aluminosilicate minerals Add to Cart

  • Microwave Digestion for Metals Analysis Milestone

      Most of these sample types require modern technologies of microwave digestion for metals analysis to remain in line with the ICPOES and ICPMS analysis standards Latest requirements in fast sample turnaround require lab instrumentation that can optimize the analytical workflow on every step from sample preparation to final result

  • (PDF) highperformance sample digestion of

      Metal ore digestion mining industry for faster and more costeffective methods for the determination of various elements in ores, while maintaining “ The microwave digestion

  • Microwave Digestion EPA Method 3052 on the

      Microwave Digestion EPA Method 3052 on the Multiwave 3000 Author: PerkinElmer Keywords: Microwave sample preparation provides an efficient and clean sample preparation for multielement analytical techniques such as ICPOES and ICPMS As Microwave assisted digestion has evolved, so have the methodologies EPA method 3052 is designed for the

  • Onestep microwave digestion procedures for the

    The use of microwave ovens for the dissolution of samples is widespread and has made it possible to obtain results very rapidly giving precision and accuracy identical with, or better than, than that obtained by classical procedures Technical publications and instruction manuals, however, rarely give information o

  • METHOD 3051A MICROWAVE ASSISTED ACID

      manufacturer of the microwave system being used are considered acceptable WARNING: When acids such as nitric and hydrochloric are used to effect sample digestion in microwave units in open vessel(s), or sealed vessel(s), there is the potential for any released acid vapors to corrode the safety devices that prevent the microwave

  • Arsenic, Cadmium, Cobalt, Copper, Lead, and Nickel

      microwave digestion to a hotplate digestion can be found in Section 49 The Standard Reference Material (SRM) used was Urban Particulate Matter, SRM 1648 Overall, the results are fairly similar for the elements tested in this method Closedvessel, high pressure microwave digestion has been used for several years for

  • phosphorus by microwave digestion and analysis by icp

      Hence, the Microwave Digestion was already done on the sample Just needed to turn on Phosphorus lines • Only 15% of samples needing Total P needed TKN as well Hence, 85% of the Total P Kjeldahl digestions could be eliminated • Microwave Digestion done in about 1 hour whereas the Total –P Digestion takes about 55 6 hours

  • How Infrared Digestion Technology And Automation

      Sample analysis is a critical part of any mining process to understand the ore composition and enable processing The use of hazardous chemicals, as well as requirements around accuracy and turnaround time, pose significant challenges, especially in remote locations where it may be difficult to find qualified laboratory technicians

  • RTS3a Certificate of Analysis NRCan

      RTS3a is a sulphide ore mill tailings obtained from an unoxidized zone of the Waite Amulet tailings, north of Noranda, QC, CanadaThe raw material was donated by Xstrata Copper The raw material for RTS3a was obtained from the same source as its predecessor, RTS3

  • CHAPTER 13 WET DIGESTION METHODS pggdapl

      deal exclusively with a single technique: microwaveassisted sample preparation [30, 31], this topic has also been reviewed elsewhere [3239]; even the literature on the use of microwaveassisted digestion procedures for subsequent sample analysis by means of electrothermal atomic absorption spectrometry (ETAAS) is reviewed [40] In 1997 the