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WO1999060175A1 - Conglomeration de mineraux a l'etat granulaire avec des liants comprenant le verre soluble, une resine acrylique et l'alcool vinylique - Google Patents

Conglomeration de mineraux a l'etat granulaire avec des liants comprenant le verre soluble, une resine acrylique et l'alcool vinylique Download PDF

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Publication number
WO1999060175A1
WO1999060175A1 PCT/ZA1999/000034 ZA9900034W WO9960175A1 WO 1999060175 A1 WO1999060175 A1 WO 1999060175A1 ZA 9900034 W ZA9900034 W ZA 9900034W WO 9960175 A1 WO9960175 A1 WO 9960175A1
Authority
WO
WIPO (PCT)
Prior art keywords
binder
mineral
conglomeration
acrylic resin
vinyl alcohol
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/ZA1999/000034
Other languages
English (en)
Inventor
John Rutherford Moody
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MINERAL ENHANCEMENT SOUTH AFRICA Pty Ltd
Original Assignee
MINERAL ENHANCEMENT SOUTH AFRICA Pty Ltd
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 MINERAL ENHANCEMENT SOUTH AFRICA Pty Ltd filed Critical MINERAL ENHANCEMENT SOUTH AFRICA Pty Ltd
Priority to EP99924556A priority Critical patent/EP1080237A1/fr
Priority to AU41031/99A priority patent/AU4103199A/en
Priority to JP2000549780A priority patent/JP2002515546A/ja
Priority to CA002332797A priority patent/CA2332797A1/fr
Priority to BR9910561-6A priority patent/BR9910561A/pt
Publication of WO1999060175A1 publication Critical patent/WO1999060175A1/fr
Priority to NO20005789A priority patent/NO20005789L/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B32/00—Artificial stone not provided for in other groups of this subclass
    • C04B32/005—Artificial stone obtained by melting at least part of the composition, e.g. metal
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications

Definitions

  • This invention relates to the conglomeration of minerals, excluding carbonaceous minerals, from a granular state and more particularly but not exclusively from granules of less than 5.0 mm granule size mixed with fines.
  • a method of conglomerating a mineral in a granular state for smelting comprising admixing with the mineral an amount of 0.1% to 5% by mass of a binder including at least sodium silicate, acrylic resin, vinyl alcohol, an effective amount of a boron accelerator, a magnesium salt and an anti-oxidant where necessary for smelting and consolidating the mixture into discreet units suitable for transport and handling.
  • a binder including at least sodium silicate, acrylic resin, vinyl alcohol, an effective amount of a boron accelerator, a magnesium salt and an anti-oxidant where necessary for smelting and consolidating the mixture into discreet units suitable for transport and handling.
  • the boron accelerator may be borax and the magnesium salt may be magnesium chloride.
  • Still further features of this invention provide for the conglomeration to be effected on a mineral having a particle size of less than 1.5 mm or a mixture of particle 5 sizes in the range of 1.5 mm to 5.0 mm and fines, for the binder to be used at least in part in liquid form, for the accelerator to be used in dry or low viscosity liquid form and for remaining constituents to be used in high viscosity liquid form.
  • the invention also provides for the mixing to be effected at ambient or elevated temperature using a ribbon or other suitable blender and for the conglomeration o to take place at elevated temperature and to be effected through heated moulds.
  • Still further features of this invention provide for the discreet units to be blocks or briquettes and for the units to have a size suitable for easy handling and transportation preferably having a weight of between 50 g and 1 kg.
  • the binder will preferably comprise constituents in the ratio
  • the invention also provides for the conglomeration to be effected under pressure of approximately 14 000 KPA with a moisture content of less than 6% by weight in a briquetting machine.
  • Still further features of this invention provide for the accelerator to be controlled by means of a buffer which is weak acidic or alkali.
  • chrome granules of an average particle size of 1.55 mm (10 microns - 2 mm) were mixed in a ribbon blender at room temperature for 3 minutes with a binder consisting of
  • the constituents were mixed in water and in the percentages given by mass.
  • Samples were conglomerated using a Komarek briquetting press under a pressure of approximately 14000 KPA.
  • the briquettes are exceptionally hard and on compression testing were found to have a compression strength of 27.0 KPA.
  • the mixture was conglomerated in the same manner as the chrome and the resulting briquettes were found to have a compressive strength of 48.3 KPA.
  • the moisture content of the briquettes was kept below 4% by mass.
  • the briquettes maintained their integrity at a temperature in excess of 1500°C.
  • the binder consisted of
  • the material was briquetted in batches of 1.4 tons of silica manganese mixed with 1000 grams of dry borax accelerator with the remainder of the binder being a thick slurry.
  • the mixing time in the ribbon blender was five minutes and the pressure in the briquetting machine was 23 Mpa.
  • Tumbler 1 Tumbler 2 MDa k ⁇ /b ⁇ q k ⁇ /b ⁇ q
  • Tumbler 1 Tumbler 2 Mpa k ⁇ /b ⁇ q k ⁇ /b ⁇ q
  • the briquettes were introduced into a furnace process wherein the furnace was not shrouded against ambient atmosphere. No violent reaction took place and the results of the alloying process were satisfactory.
  • the binder did not affect the properties of the minerals and affords some advantage to the smelting process. No anti-oxidant was required in the binder because the smelting furnace contents were shielded against oxidation.
  • composition of the binder can be varied to obtain the best results with each mineral to be agglomerated.
  • the most suitable recipe can be determined with reasonable experimentation and a comprehensive analysis of the minerals.
  • the constituents of the binder do not only conglomerate the mineral, they are selected also to have only desirable effects on the final alloy.
  • the organic components are chosen for insolubility in the metal and become constituents in the furnace slag
  • the organic constituents will also be chosen from food quality products to avoid contamination in that no toxic reaction products result from the use of the binder.
  • sodium silicate gives the final briquette the required resistance to temperature. It also, along with the magnesium chloride gives the product insolubility in water and thus good weathering characteristics.
  • the polyvinyl alcohol and acrylic resin combination gives hardness and insolubility to the final product enabling it to melt inwardly in use and the small quantities of binder required make it easy to prepare and handle.
  • the basic binding appear to be that between mineral and polyvinyl alcohol. It is necessary that the latter be dissolved in the water during mixing and good stirring is required. Sometimes elevated temperature of the water will materially assist in reducing the mixing time required.
  • the binder lends itself to a wide range of constituent composition for achieving conglomeration in the most economic manner with respect both to time and composition of the binder.
  • the sodium nitrite constituent acts to prevent oxidation and thus dilution of constituents such as manganese as alloying elements in the final metallurgical product. Where this product is produced in an argon shrouded furnace this constituent may be omitted from the binder.
  • the water content of the mixture prior to introduction into the consolidating moulds may be more or less than the 6 percent referred to.
  • all water of crystalisation in the binder constituents will form part of overall moisture content under consideration. This will determine to some extent how the binder is mixed.
  • the accelerator may be used dry or as a low viscosity slurry. This enables control over the accelerator to be maintained at a high level.
  • the degree of saponification of the vinyl alcohol to a large extent affects the difficulty in dissolution and temperature and times needed for this process.
  • the pH control can also become important to prevent the reaction of binder constituents from taking place too rapidly when the binder is mixed into the mineral.
  • a buffer preferably citric acid or potassium hydroxide, chosen for a binder of a specific mineral, will also assist in the control of the binder reaction.
  • the physical characteristic of the mineral is important. Larger sized particles can be accommodated provided there is an adequate quantity of fines between the larger particles. Mixtures of this kind will require the use of less binder material and the optimum dosage rate will be proportional to the distribution of particle sizes in the mineral.
  • a very suitable proportionality of particle size is 1.5 mm to 2 mm - 20% by weight; -8 mm to 1 mm - 30% by weight with the remainder as powder.
  • the sodium nitrite may be omitted when the briquettes are used in a shrouded furnace.
  • this constituent, or an equivalent, may beneficially be included in the binder as a preservative where there is a possibility of the briquettes or blocks being stored for lengthy periods of time.
  • the mineral may be bound into blocks rather than briquettes. This will enable mineral having larger size particles than those referred to above and a wider size range to be accommodated with the binder of this invention.
  • Equipment suitable for this purpose is commercially available.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Fertilizers (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)

Abstract

L'invention concerne l'agglomération ou la formation de briquettes d'un minéral à l'état de fines granules, inférieures à 5 mm, pour la fusion, pouvant être mélangé avec des fines, par conglomération du minéral avec un liant préparé à partir d'au moins l'un des produits ci-après: silicate de sodium, résine acrylique, alcool vinylique, borax, chlorure de magnésium et, si nécessaire, durant la fusion, un anti-oxydant tel que le sodium. Les conglomérats ou les briquettes liés présentent d'excellentes propriétés de résistance.
PCT/ZA1999/000034 1998-05-18 1999-05-17 Conglomeration de mineraux a l'etat granulaire avec des liants comprenant le verre soluble, une resine acrylique et l'alcool vinylique Ceased WO1999060175A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP99924556A EP1080237A1 (fr) 1998-05-18 1999-05-17 Conglomeration de mineraux a l'etat granulaire avec des liants comprenant le verre soluble, une resine acrylique et l'alcool vinylique
AU41031/99A AU4103199A (en) 1998-05-18 1999-05-17 Conglomeration of minerals from a granular state with binder including waterglass, acrylic resin and vinyl alcohol
JP2000549780A JP2002515546A (ja) 1998-05-18 1999-05-17 水ガラス、アクリル樹脂、及びビニルアルコールを含有しているバインダーでの、粒状鉱物類の固結
CA002332797A CA2332797A1 (fr) 1998-05-18 1999-05-17 Conglomeration de mineraux a l'etat granulaire avec des liants comprenant le verre soluble, une resine acrylique et l'alcool vinylique
BR9910561-6A BR9910561A (pt) 1998-05-18 1999-05-17 Processo de conglomeração de um mineral em um estado granular para fusão redutora, e, agente aglutinante para o mesmo
NO20005789A NO20005789L (no) 1998-05-18 2000-11-15 Fremgangsmåte samt bindemiddel til konglomerering av mineraler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA98/4152 1998-05-18
ZA984152 1998-05-18

Publications (1)

Publication Number Publication Date
WO1999060175A1 true WO1999060175A1 (fr) 1999-11-25

Family

ID=25587010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA1999/000034 Ceased WO1999060175A1 (fr) 1998-05-18 1999-05-17 Conglomeration de mineraux a l'etat granulaire avec des liants comprenant le verre soluble, une resine acrylique et l'alcool vinylique

Country Status (9)

Country Link
EP (1) EP1080237A1 (fr)
JP (1) JP2002515546A (fr)
AU (1) AU4103199A (fr)
BR (1) BR9910561A (fr)
CA (1) CA2332797A1 (fr)
NO (1) NO20005789L (fr)
PL (1) PL344292A1 (fr)
TR (1) TR200003388T2 (fr)
WO (1) WO1999060175A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000075384A1 (fr) * 1999-06-03 2000-12-14 Nu-Rock Corporation S.A.R.L. Procede pour agglomerer des dechets particulaires
WO2004031421A3 (fr) * 2002-09-18 2004-10-14 Akzo Nobel Nv Composition d'agent agglomerant et procede d'agglomeration de materiau particulaire
WO2004099452A1 (fr) * 2003-05-05 2004-11-18 Samarco Mineração S/A Boulettes de minerai de fer a reduction d'abrasion, d'adherence, de degradation et d'emission de poussiere, et leur procede de production
EP1403389A4 (fr) * 2001-07-03 2005-03-02 Zakrytoe Aktsionernoe Obschest Procede pour produire des briquets a partir d'oxydes de metaux finement disperses
CN104975171A (zh) * 2015-05-28 2015-10-14 营口市林合茂科技开发有限公司 硼泥球团粘结剂/炼铁助剂及其制备方法
WO2017194841A1 (fr) * 2016-05-11 2017-11-16 Kemira Oyj Composition de liant et procédé de frittage
WO2018033712A1 (fr) 2016-08-15 2018-02-22 Binding Solutions Limited Briquettes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PE20130562A1 (es) * 2009-11-17 2013-04-25 Vale Sa Aglomerado de finos de mineral que sera utilizado en el proceso de sinterizacion y proceso de produccion de aglomerado de finos de mineral

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721229A1 (de) * 1976-05-23 1977-12-01 Samancor Management Services Brikettieren von erzen
JPS53110915A (en) * 1977-03-10 1978-09-28 Denki Kagaku Kogyo Kk Production of briquettes for controlled recarburizer
GB2006179A (en) * 1977-10-17 1979-05-02 Revertex South Africa The treatment of particulate material to form aggregates
US4167398A (en) * 1978-03-13 1979-09-11 American Colloid Company Carbonaceous briquette and method for making same
JPS5547332A (en) * 1978-09-29 1980-04-03 Yokohamashi Solidifying treatment of electrostatic precipitation ash
EP0053921A2 (fr) * 1980-12-08 1982-06-16 Revertex (South Africa) (Proprietary) Limited Agglomérés
JPS58204093A (ja) * 1982-05-24 1983-11-28 Kozai Gijutsu Kenkyusho:Kk 固型燃料
DE3445503A1 (de) * 1984-12-13 1986-06-19 Woellner-Werke GmbH & Co, 6700 Ludwigshafen Verfahren zur herstellung von briketts
US4751259A (en) * 1987-08-05 1988-06-14 Nalco Chemical Company Compositions for iron ore agglomeration
SU1622515A1 (ru) * 1987-07-30 1991-01-23 Специализированный проектно-изыскательский институт "Гидроспецпроект" Способ укреплени грунта
DD299875A7 (de) * 1989-09-29 1992-05-14 Kali Veb K Verfahren zur herstellung von brikettierfaehigen mgo-strukturen
US5194087A (en) * 1990-05-18 1993-03-16 Norsk Proco A/S Fireproof, waterproof and acidproof binder
WO1995020022A1 (fr) * 1994-01-21 1995-07-27 Covol Technologies, Inc. Utilisation de dechets de carbone
US5589118A (en) * 1994-01-21 1996-12-31 Covol Technologies, Inc. Process for recovering iron from iron-containing material
US5738694A (en) * 1994-01-21 1998-04-14 Covol Technologies, Inc. Process for recovering iron from iron-containing material

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721229A1 (de) * 1976-05-23 1977-12-01 Samancor Management Services Brikettieren von erzen
JPS53110915A (en) * 1977-03-10 1978-09-28 Denki Kagaku Kogyo Kk Production of briquettes for controlled recarburizer
GB2006179A (en) * 1977-10-17 1979-05-02 Revertex South Africa The treatment of particulate material to form aggregates
US4167398A (en) * 1978-03-13 1979-09-11 American Colloid Company Carbonaceous briquette and method for making same
JPS5547332A (en) * 1978-09-29 1980-04-03 Yokohamashi Solidifying treatment of electrostatic precipitation ash
EP0053921A2 (fr) * 1980-12-08 1982-06-16 Revertex (South Africa) (Proprietary) Limited Agglomérés
JPS58204093A (ja) * 1982-05-24 1983-11-28 Kozai Gijutsu Kenkyusho:Kk 固型燃料
DE3445503A1 (de) * 1984-12-13 1986-06-19 Woellner-Werke GmbH & Co, 6700 Ludwigshafen Verfahren zur herstellung von briketts
SU1622515A1 (ru) * 1987-07-30 1991-01-23 Специализированный проектно-изыскательский институт "Гидроспецпроект" Способ укреплени грунта
US4751259A (en) * 1987-08-05 1988-06-14 Nalco Chemical Company Compositions for iron ore agglomeration
DD299875A7 (de) * 1989-09-29 1992-05-14 Kali Veb K Verfahren zur herstellung von brikettierfaehigen mgo-strukturen
US5194087A (en) * 1990-05-18 1993-03-16 Norsk Proco A/S Fireproof, waterproof and acidproof binder
WO1995020022A1 (fr) * 1994-01-21 1995-07-27 Covol Technologies, Inc. Utilisation de dechets de carbone
US5589118A (en) * 1994-01-21 1996-12-31 Covol Technologies, Inc. Process for recovering iron from iron-containing material
US5738694A (en) * 1994-01-21 1998-04-14 Covol Technologies, Inc. Process for recovering iron from iron-containing material

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8020, Derwent World Patents Index; Class A81, AN 80-35580C, XP002073878 *
PATENT ABSTRACTS OF JAPAN vol. 002, no. 144 (C - 029) 30 November 1978 (1978-11-30) *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 046 (C - 212) 29 February 1984 (1984-02-29) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000075384A1 (fr) * 1999-06-03 2000-12-14 Nu-Rock Corporation S.A.R.L. Procede pour agglomerer des dechets particulaires
EP1403389A4 (fr) * 2001-07-03 2005-03-02 Zakrytoe Aktsionernoe Obschest Procede pour produire des briquets a partir d'oxydes de metaux finement disperses
WO2004031421A3 (fr) * 2002-09-18 2004-10-14 Akzo Nobel Nv Composition d'agent agglomerant et procede d'agglomeration de materiau particulaire
WO2004099452A1 (fr) * 2003-05-05 2004-11-18 Samarco Mineração S/A Boulettes de minerai de fer a reduction d'abrasion, d'adherence, de degradation et d'emission de poussiere, et leur procede de production
CN104975171A (zh) * 2015-05-28 2015-10-14 营口市林合茂科技开发有限公司 硼泥球团粘结剂/炼铁助剂及其制备方法
WO2017194841A1 (fr) * 2016-05-11 2017-11-16 Kemira Oyj Composition de liant et procédé de frittage
WO2018033712A1 (fr) 2016-08-15 2018-02-22 Binding Solutions Limited Briquettes

Also Published As

Publication number Publication date
NO20005789D0 (no) 2000-11-15
TR200003388T2 (tr) 2001-02-21
BR9910561A (pt) 2001-01-30
JP2002515546A (ja) 2002-05-28
PL344292A1 (en) 2001-10-22
NO20005789L (no) 2001-01-18
EP1080237A1 (fr) 2001-03-07
AU4103199A (en) 1999-12-06
CA2332797A1 (fr) 1999-11-25

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