WO1989004379A1 - Irradiation par micro-ondes de minerais et de concentres mineraux - Google Patents

Irradiation par micro-ondes de minerais et de concentres mineraux Download PDF

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Publication number
WO1989004379A1
WO1989004379A1 PCT/AU1988/000437 AU8800437W WO8904379A1 WO 1989004379 A1 WO1989004379 A1 WO 1989004379A1 AU 8800437 W AU8800437 W AU 8800437W WO 8904379 A1 WO8904379 A1 WO 8904379A1
Authority
WO
WIPO (PCT)
Prior art keywords
concentrates
column
particulate
microwave
admixture
Prior art date
Application number
PCT/AU1988/000437
Other languages
English (en)
Inventor
Howard Knox Worner
Original Assignee
Wollongong Uniadvice Limited
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 Wollongong Uniadvice Limited filed Critical Wollongong Uniadvice Limited
Priority to GB898915555A priority Critical patent/GB8915555D0/en
Publication of WO1989004379A1 publication Critical patent/WO1989004379A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1218—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B25/00—Obtaining tin
    • C22B25/02—Obtaining tin by dry processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1263—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining metallic titanium from titanium compounds, e.g. by reduction
    • C22B34/1281—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining metallic titanium from titanium compounds, e.g. by reduction using carbon containing agents, e.g. C, CO, carbides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/14—Obtaining zirconium or hafnium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/32—Obtaining chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/22—Remelting metals with heating by wave energy or particle radiation
    • C22B9/221—Remelting metals with heating by wave energy or particle radiation by electromagnetic waves, e.g. by gas discharge lamps
    • C22B9/225—Remelting metals with heating by wave energy or particle radiation by electromagnetic waves, e.g. by gas discharge lamps by microwaves

Definitions

  • This invention relates to the treatment of oxidic mineral ores or concentrates.
  • a first aspect of this invention consists in a method of treating oxidic mineral ores or concentrates comprising the steps of metallising by microwave irradiation particulate ores or concentrates which have been previously intimately admixed with particulate carbon to produce metallic droplets and subsequently collecting said droplets.
  • an apparatus to treat oxidic mineral ores or concentrates comprising feeding means to deliver an intimate admixture of particulate ore or concentrate and particulate carbon to an inclined column through which the admixture is passed, microwave generating and guiding means to generate and direct microwave energy into said column, and metal droplet collecting means disposed adjacent an outlet from said column.
  • oxidic mineral is intended to include any oxygen containing mineral whether or not it is considered a true oxide.
  • Such reactions are initiated by microwave energy preferably as the mixture of particulate carbon and particulate mineral matter is conveyed through a microwave field for example a conveniently designed oven.
  • a microwave field for example a conveniently designed oven.
  • Such continuous microwave ovens are now commercially available.
  • the method according to the invention is carried out in a refractory pipe or other suitable conveying system, and preferably in an inclined pipe or column, made so that gravity alone will enable the mixture of particulate carbon and mineral matter to flow at an appropriate and controlled rate through the microwave field.
  • At least the part of the refractory pipe or other containing and conveying system in which microwave irradiation takes place must be of high quality and freely allow microwave energy into the particulate mixture slowly moving through the system.
  • High grade alumina rich refractory is an appropriate container-conveying material.
  • particulate ores or concentrates and particulate carbon prefferably be dried before irradiation. Drying can be achieved for example, using a conventional oven or heating or using a low power microwave system.
  • the admixture of particulate ore or concentrate and particulate carbon contains an excess stiochiometric proportion of carbon to oxygen. More preferably, the admixture has an amount of carbon in excess of twice the stiochiometric carbon requirement. The resulting excess char is recycled.
  • the apparatus according to this invention comprises a column having an inner wall formed from a substantially microwave transparent material.
  • an air gap spaces the inner wall from a surrounding insulating layer. The air gap provides additional thermal insulation and appropriate distribution of the microwave energy.
  • Microwave energy is preferably directed into the column by waveguides which extend through the insulating layer and terminate adjacent or within the air gap.
  • the waveguides are preferably terminated by microwave transparent windows to prevent hot gases entering the waveguides. Additional thermal insulation can be provided within the waveguide adjacent the window.
  • FIG. 1 is a block diagram of an apparatus according to this invention.
  • Figure 2 is a sectional elevation of an apparatus according to this invention.
  • Figure 3 is a sectional plan view of the apparatus Shown in Figure 2;
  • Figure 4 is an enlarged sectional view of part of the apparatus shown in Figure 2; and - - .
  • Figure 5 is a schematic sectional elevation of an apparatus according to another embodiment of this invention.
  • FIG. 1 is a block diagram of an apparatus to treat oxidic mineral ores or concentrates according to this invention in general form.
  • the apparatus comprises a feeding means which can take the form of a hopper 1 or other suitable system which delivers an intimate admixture (not shown) of particulate ore or concentrate into a substantially vertical column 2.
  • Microwave energy is directed into column 2 from suitable sources to irradiate the admixture passed therethrough.
  • the irradiation produces metallic droplets which with the other reaction products are directed through a microwave containing connector 3 to a collector 4.
  • the collector can comprise a hearth or induction furnace or any other suitable collector for smelt products and any excess char.
  • the slag and excess char directed to collector 4 are separated from the metal by known means and the char are recycled with the feed.
  • a tap hole or other appropriate means is used to withdraw the liquid metal or alloy from collector 4.
  • FIGS 2 to 4 show in more detail an embodiment of an apparatus to treat mineral ores or concentrates according to this invention.
  • the apparatus comprises a refractory column 5 extending substantially vertically above an induction smelting crucible 6.
  • the column 5 has a cylinderical inner wall 7 of microwave transparent high-alumina refractory material.
  • An air gap 8 spaces inner wall 7 from a surrounding refractory insulating layer 9.
  • the air gap 8 is provided to give improved insulation and aid in distributing microwave energy.
  • a . stainless steel shell 10 forms the outer covering of the column 5 to prevent microwave leakage.
  • a hopper 11 disposed above column 5 delivers the admixture 12.
  • the hopper 11 is fitted with an appropriate form of feed control means 13, indicated schematically as rotatably mounted vanes, to control the rate of through flow of the admixture 12.
  • Microwave energy is generated by magnetrons 14 and directed into the column 5 by waveguides 15.
  • the number of magnetrons and associated waveguide assemblies are determined by the required energy density.
  • the waveguides 15 are spaced around the column 5 to give a more uniform microwave field and enter the column 5 at an angle to reduce the likelihood Of reflections being transmitted along the waveguide in the reverse direction which could damage the magnetron.
  • FIG 4 shows an enlarged view of part of the column wall.
  • the waveguide 15 penetrates outer shell 10 and insulation 9 to terminate adjacent air gap 8.
  • the end of waveguide 15 is sealed by a microwave transparent window 16 formed from a suitable refractory which is preferably also abrasion resistant. Alumina refractories are suitable for this purpose.
  • insulation 17 is provided within the waveguide 15 to prevent heat being conducted to the magnetron 14.
  • the insulation must be substantially microwave transparent and preferably comprises several centimetres of material known as "Fibrefrax" or "Kaowool".
  • the wails of the waveguide are preferably provided with some form of cooling jacket 18 through which water or other suitable coolants are circulated.
  • magnetron 14 may need to be protected from temperatures much above 100°C by provision for example low powered cooling fans (not shown) .
  • the induction crucible is of conventional design and only the heating element 19 is shown.
  • the crucible 6 has an appropriate tap hole 20 at the bottom for removing molten metal or alloy at appropriate intervals.
  • An argon purging and feeding system of substantially conventional construction indicated generally at 21 can be connected between the bottom and the top of the refractory column, through inlet 22 and outlet pipe 23. This is required for use with more reactive metals such as titanium or zirconium.
  • particulate -mineral matter admixed with particulate carbon preferably in excess of the stoichiometric proportion of carbon to oxygen, is admitted to the column from hopper 11.
  • the mixture is irradiated by microwave energy from one or more magnetrons 14 directed via wave guides 15 as it passes through column.
  • the inner wall 7 of column is substantially transparent to microwave energy but refractory enough to withstand the temperatures involved in the metallising reaction. It is advantageous if the mineral matter is also a good receptor of microwave energy.
  • inert gas such as argon
  • the argon is preferably injected at a point just above the induction furnace and at or near the bottom of the metallising column.
  • the whole system is advantageously made gas tight by using suitable seals so that only very small volumes of inert gas need to be used and therefore cleaned.
  • the upward moving argon, or other inert gas helps sweep out at the top of the system air, N , CO and CO which might cause back reactions of the metals to oxides or nitrides.
  • nitrides may, of course, be advantageously produced with certain alloys in which case the inert atmosphere need not be provided.
  • this gas may be bubbled through a porous plug (not shown) into the base of the induction furnace crucible, and through the molten metal or alloy in the crucible.
  • FIG. 5 schematically shows an apparatus to treat mineral ores and concentrated according to another embodiment of this invention.
  • the apparatus comprises a feed hopper 24 which can be of similar construction to that described above.
  • the hopper 24 directs the ' intimate admixture 25 into a cylinderical supply pipe 26 formed of stainless steel or other suitable heat resistant material.
  • the column shown generally as 27 includes a frusto-conical inner wall portion 28 of microwave transparent refractory material.
  • the supply pipe 26 feeds the admixture 25 into frusto conical portion 28 for irradiation by microwave energy in the manner described above.
  • Frusto conical portion 28 open at its open end so that water vapour and other gases produced by the irradiation can escape into a chamber 29 formed within the column 27.
  • An exhaust vent 30 is provided to allow escape of these gases which are preferably ducted away in an appropriate manner.
  • the bottom of frusto conical portion 28 directs the processed material into a collector 31 which can be of the type described above.
  • the outer walls of column 27 can be constructed in an identical manner to that described in more detail above.
  • the outer surface of frusto conical portion 28 is preferably covered with refractory insulation (not shown) to reduce radiant heat transfer to the outer walls of the column.
  • the mix was fed into apparatus similar to that illustrated schematically in Figure 5 and the power in two IKW 2450MHz magnetrons was progressively increased until the temperature in the char-tin concentrate mixture was above 900°C. Temperature rise was rapid as both the char and the tin concentrate minerals were excellent receptors. Within seven minutes tin metal began to collect in the collecting crucible in the bottom furnace. Smelting continued until the crucible was full.
  • SiOpaper 4.2 % were blended with a high grade haematite ore from the Pilbara area in Western Australia (Fe 2O3 content greater than 95%) in the ratio 2 of chromite to 1 of haematite. This blend was then intimately mixed with char of the same high quality as used in Example 1. A little CaO and fluorspar flux was added and the mixture fed into the apparatus shown schematically in Figure 5 using one controllable ' 5KW ' 2450MHz frequency magnetron for microwave power. The alloy collected in the collector induction furnace was found * to contain
  • Example 2 was blended with the high grade haematite used in Example 2 in the proportions 1 of ilmenite to 1 of haematite and then that blend was intimately mixed with the same high grade brown coal char as used in Examples 1 and 2.
  • a little CaO flux was added and the mixture was fed to the apparatus shown diagrammatically in Figure 5.
  • the power into a 5KW magnetron was slowly increased until melting temperature * was reached and maintained until the receiving crucible in the induction furnace was full of metal at the bottom and unused char on top. As in the earlier examples the unused char was scraped.off for re-use.
  • the alloy produced was cast into a cold iron mould and was found to be very hard. It was analysed and found to include

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Furnace Details (AREA)

Abstract

Un mélange de minerai ou de concentré minéral et de carbone particulaire est irradié avec une énergie à micro-ondes afin de produire des gouttelettes métalliques que l'on récupère. Dans un mode de réalisation préféré, l'appareil comporte une trémie (11) ammenant le mélange (12) jusqu'à une colonne inclinée (5) à travers laquelle passe le mélange, lequel est irradié avec de l'énergie à micro-ondes. On dispose un collecteur (6) de métal liquide adapté à une sortie (20) de la colonne.
PCT/AU1988/000437 1987-11-13 1988-11-11 Irradiation par micro-ondes de minerais et de concentres mineraux WO1989004379A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB898915555A GB8915555D0 (en) 1987-11-13 1988-11-11 Microwave irradiation of mineral ores and concentrates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPI541487 1987-11-13
AUPI5414 1987-11-13

Publications (1)

Publication Number Publication Date
WO1989004379A1 true WO1989004379A1 (fr) 1989-05-18

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Application Number Title Priority Date Filing Date
PCT/AU1988/000437 WO1989004379A1 (fr) 1987-11-13 1988-11-11 Irradiation par micro-ondes de minerais et de concentres mineraux

Country Status (2)

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GB (1) GB8915555D0 (fr)
WO (1) WO1989004379A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992018249A1 (fr) * 1991-04-10 1992-10-29 The Broken Hill Proprietary Company Limited Recuperation d'especes de valeur dans un minerai
WO1997034019A1 (fr) * 1996-03-12 1997-09-18 Emr Microwave Technology Corporation Traitement par micro-ondes de minerais et de concentres porteurs de metaux
WO1998005418A1 (fr) * 1996-08-06 1998-02-12 Emr Microwave Technology Corporation Procede et dispositif de traitement hyperfrequence de minerais et concentres metalliques dans un reacteur a lit fluidise
US5720859A (en) * 1996-06-03 1998-02-24 Raychem Corporation Method of forming an electrode on a substrate
US5863468A (en) * 1997-10-31 1999-01-26 Raychem Corporation Preparation of calcined ceramic powders
US6277168B1 (en) * 2000-02-14 2001-08-21 Xiaodi Huang Method for direct metal making by microwave energy
WO2002046482A1 (fr) * 2000-12-04 2002-06-13 Tesla Group Holdings Pty Limited Réduction plasmatique de matériaux
WO2006030327A2 (fr) * 2004-09-15 2006-03-23 Sishen Iron Ore Company (Proprietary) Limited Systeme de liberation de micro-ondes
AU2002220358B2 (en) * 2000-12-04 2007-11-29 Plasma Technologies Pty Ltd Plasma reduction processing of materials
WO2008051356A2 (fr) 2006-10-03 2008-05-02 Jiann-Yang Hwang Procédé de chauffage micro-ondes et appareil de réduction de l'oxyde de fer
WO2009009817A1 (fr) * 2007-07-18 2009-01-22 Langfang Chi-Che Euro-Technic New Building Materials Co., Ltd. Moussage, conditionné par la chaleur, de particules d'un produit en vrac d'un four à cuve approprié
EP2023068A1 (fr) * 2007-08-01 2009-02-11 Kazuhiro Nagata Four à micro-ondes de production de fer
US8540794B2 (en) * 2004-09-03 2013-09-24 Jiann-Yang Hwang Method for reducing iron oxide and producing syngas
US8764875B2 (en) 2010-08-03 2014-07-01 Xiaodi Huang Method and apparatus for coproduction of pig iron and high quality syngas
RU2529349C2 (ru) * 2013-03-28 2014-09-27 Виталий Евгеньевич Дьяков Способ переработки оловосодержащих сульфидных хвостов и аппарат обжига для его осуществления
RU2602204C2 (ru) * 2015-07-10 2016-11-10 Виталий Евгеньевич Дьяков Способ переработки оловосодержащих сульфидных хвостов и аппарат обжига для его осуществления
CN107012338A (zh) * 2017-03-17 2017-08-04 昆明理工大学 一种高效高回收率回收工业锡粉的方法
CN108147494A (zh) * 2018-02-09 2018-06-12 北方工业大学 一种吸附式浮岛

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5745086A (en) * 1985-05-14 1986-11-20 Laser-Tech Australia Ltd. Plasma reduction of ores, esp. tin
US4627148A (en) * 1983-12-07 1986-12-09 Hitachi, Ltd. Method of producing high-purity metal member
JPS6360239A (ja) * 1986-09-01 1988-03-16 Nippon Kokan Kk <Nkk> 活性金属の製造方法
JPS6362828A (ja) * 1986-09-01 1988-03-19 Nippon Kokan Kk <Nkk> 活性金属の製造方法
AU1529988A (en) * 1987-04-28 1988-11-03 Wollongong Uniadvice Ltd. Microwave irradiation of ore-carbon composites

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627148A (en) * 1983-12-07 1986-12-09 Hitachi, Ltd. Method of producing high-purity metal member
AU5745086A (en) * 1985-05-14 1986-11-20 Laser-Tech Australia Ltd. Plasma reduction of ores, esp. tin
JPS6360239A (ja) * 1986-09-01 1988-03-16 Nippon Kokan Kk <Nkk> 活性金属の製造方法
JPS6362828A (ja) * 1986-09-01 1988-03-19 Nippon Kokan Kk <Nkk> 活性金属の製造方法
AU1529988A (en) * 1987-04-28 1988-11-03 Wollongong Uniadvice Ltd. Microwave irradiation of ore-carbon composites

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT ACCESSION NO. 88-115046/17 Class M 25; & JP,A,63 060 239 (NIPPON KOKAN K.K.) 16 March 1988 (16.03.88). *
DERWENT ABSTRACT ACCESSION NO. 88-116215/17 Class M 24; & JP,A,63 062 828 (NIPPON KOKAN K.K.) 19 March 1988 (19.03.88). *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992018249A1 (fr) * 1991-04-10 1992-10-29 The Broken Hill Proprietary Company Limited Recuperation d'especes de valeur dans un minerai
WO1997034019A1 (fr) * 1996-03-12 1997-09-18 Emr Microwave Technology Corporation Traitement par micro-ondes de minerais et de concentres porteurs de metaux
US5720859A (en) * 1996-06-03 1998-02-24 Raychem Corporation Method of forming an electrode on a substrate
WO1998005418A1 (fr) * 1996-08-06 1998-02-12 Emr Microwave Technology Corporation Procede et dispositif de traitement hyperfrequence de minerais et concentres metalliques dans un reacteur a lit fluidise
US5863468A (en) * 1997-10-31 1999-01-26 Raychem Corporation Preparation of calcined ceramic powders
WO2002079529A1 (fr) * 2000-02-14 2002-10-10 Xiaodi Huang Procede permettant de preparer directement un metal a l'aide d'energie micro-onde
US6277168B1 (en) * 2000-02-14 2001-08-21 Xiaodi Huang Method for direct metal making by microwave energy
WO2002046482A1 (fr) * 2000-12-04 2002-06-13 Tesla Group Holdings Pty Limited Réduction plasmatique de matériaux
US7229485B2 (en) 2000-12-04 2007-06-12 Tesla Group Holdings Pty Limited Plasma reduction processing of materials
AU2002220358B2 (en) * 2000-12-04 2007-11-29 Plasma Technologies Pty Ltd Plasma reduction processing of materials
US8540794B2 (en) * 2004-09-03 2013-09-24 Jiann-Yang Hwang Method for reducing iron oxide and producing syngas
WO2006030327A2 (fr) * 2004-09-15 2006-03-23 Sishen Iron Ore Company (Proprietary) Limited Systeme de liberation de micro-ondes
WO2006030327A3 (fr) * 2004-09-15 2010-08-19 Sishen Iron Ore Company (Proprietary) Limited Systeme de liberation de micro-ondes
AU2007309609B2 (en) * 2006-10-03 2012-03-15 Xiaodi Huang Microwave heating method and apparatus for iron oxide reduction
EP2089549A2 (fr) * 2006-10-03 2009-08-19 Jiann-Yang Hwang Procédé de chauffage micro-ondes et appareil de réduction de l'oxyde de fer
EP2089549A4 (fr) * 2006-10-03 2011-03-02 Jiann-Yang Hwang Procédé de chauffage micro-ondes et appareil de réduction de l'oxyde de fer
WO2008051356A2 (fr) 2006-10-03 2008-05-02 Jiann-Yang Hwang Procédé de chauffage micro-ondes et appareil de réduction de l'oxyde de fer
WO2009009817A1 (fr) * 2007-07-18 2009-01-22 Langfang Chi-Che Euro-Technic New Building Materials Co., Ltd. Moussage, conditionné par la chaleur, de particules d'un produit en vrac d'un four à cuve approprié
US7744810B2 (en) 2007-08-01 2010-06-29 Tokyo Institute Of Technology Microwave iron-making furnace
EP2023068A1 (fr) * 2007-08-01 2009-02-11 Kazuhiro Nagata Four à micro-ondes de production de fer
US8764875B2 (en) 2010-08-03 2014-07-01 Xiaodi Huang Method and apparatus for coproduction of pig iron and high quality syngas
RU2529349C2 (ru) * 2013-03-28 2014-09-27 Виталий Евгеньевич Дьяков Способ переработки оловосодержащих сульфидных хвостов и аппарат обжига для его осуществления
RU2602204C2 (ru) * 2015-07-10 2016-11-10 Виталий Евгеньевич Дьяков Способ переработки оловосодержащих сульфидных хвостов и аппарат обжига для его осуществления
CN107012338A (zh) * 2017-03-17 2017-08-04 昆明理工大学 一种高效高回收率回收工业锡粉的方法
CN108147494A (zh) * 2018-02-09 2018-06-12 北方工业大学 一种吸附式浮岛
CN108147494B (zh) * 2018-02-09 2023-07-21 北方工业大学 一种吸附式浮岛

Also Published As

Publication number Publication date
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