EP3115112B1 - Legierung und trennverfahren - Google Patents

Legierung und trennverfahren Download PDF

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Publication number
EP3115112B1
EP3115112B1 EP15176162.4A EP15176162A EP3115112B1 EP 3115112 B1 EP3115112 B1 EP 3115112B1 EP 15176162 A EP15176162 A EP 15176162A EP 3115112 B1 EP3115112 B1 EP 3115112B1
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EP
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Prior art keywords
alloy
composition
feed material
separation
particles
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EP15176162.4A
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English (en)
French (fr)
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EP3115112A1 (de
Inventor
Nicholas John TRILLWOOD
John Taylor
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Delta Products Uk Ltd
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Delta Products Uk Ltd
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Priority to EP15176162.4A priority Critical patent/EP3115112B1/de
Priority to ES15176162.4T priority patent/ES2667809T3/es
Publication of EP3115112A1 publication Critical patent/EP3115112A1/de
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/065—Spherical particles
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%

Definitions

  • the disclosure relates to an alloy, and more specifically an iron based alloy that is preferably in particulate form.
  • the invention relates to dense media separation, particularly the use of a new alloy in dense media separation processes, for instance in the metal recycling industries and mining industries.
  • Dense media separation is a process in which components of a material are separated into fractions on the basis of their differing densities. Typically, the separation is performed in a liquid that has a density that is equal to or greater than that of water (999.97 kg/m 3 ).
  • the liquid referred to in the art as a "heavy liquid" can be selected from tetrabromoethane, methylene iodide, lead sulfamate, thallium malonate or thallium formate.
  • the addition of a solid material (referred to in the art as the "media”) to a liquid carrier to form a suspension (referred to in the art as a "dense medium”) can increase the density of the liquid carrier to allow separation of components that have densities that are greater than that of water or a so-called heavy liquid.
  • a typical liquid carrier is water and typical media include ferrosilicon and magnetite.
  • the solid material is generally in particulate form. Such a process is disclosed in US4093538 .
  • the material that is to be separated into its component parts is introduced into the so-called heavy liquid/dense medium, which is typically in a conventional separating device, e.g. a static separation tank or a dynamic separator.
  • the components of the material which are less dense than the heavy liquid/dense medium will rise and float.
  • the components of the material which have a greater density than the heavy liquid/dense medium will sink.
  • the addition of solid material to a liquid carrier to form a dense medium can be problematic due to the stability of the dense medium and the proclivity of the solid material particles to settle.
  • the particle size of the solid material should be small enough that the particles will not settle as rapidly as the components of the material that is to be separated.
  • the stability of the dense medium is therefore an important parameter, because it determines the consistency of the density gradient of the suspension, which directly influences the sharpness of separation of the material that is to be separated into its component parts.
  • ferrous metals as the solid material in a liquid carrier can present additional problems due to corrosion of the solid material and the formation of rust, which can alter the separation gradient and the sharpness of separation.
  • the apparent density and stability of the dense medium are influenced by factors such as specific gravity, particle shape, particle size and/or particle size distribution of the solid material added to the liquid carrier.
  • An ideal dense medium contains media that has a high specific gravity, which increases the efficiency of separation because lower amounts of the media need to be added to the liquid carrier to achieve higher apparent densities, which means the mobility of the component parts of a material that is to be separated through the dense medium is not significantly impeded.
  • a dense medium that contains media with a low specific gravity is less desirable because a greater amount of the media needs to be added to the liquid carrier to achieve higher apparent densities, which has a detrimental effect on separation efficiency because it negatively impacts on the velocity at which component parts of a material that is to be separated move through the dense medium.
  • an alloy for use in the invention comprising:
  • the amount of a given component in a composition is the percentage weight (wt%) of that component relative to the total weight of the composition, unless otherwise stated.
  • the iron content in the alloy is at least about 81%, preferably at least about 82%, preferably at least about 83%, preferably at least about 84%, preferably at least about 85%, preferably at least about 86%, preferably at least about 87%, preferably at least about 88%, preferably at least about 89%, and preferably at least about 90%.
  • the silicon content in the alloy is no more than about 8.4%, preferably no more than about 8.3%, preferably no more than about 8.2%, preferably no more than about 8.1%, and preferably no more than about 8.0%.
  • silicon is present in the alloy in an amount of at least about 7.0%, preferably at least about 7.1%, preferably at least about 7.2%, preferably at least about 7.3%, preferably at least about 7.4%, and preferably at least about 7.5%.
  • the silicon content in the alloy is preferably from about 7.0% to about 8.5%, preferably from about 7.1%% to 8.4%, preferably from about 7.2% to about 8.3%, preferably from 7.3% to about 8.2%, and preferably about 7.4% to about 8.1%, preferably about 7.5% to about 8.0%.
  • the chromium content is less than 7%.
  • the chromium content in the alloy is from about 3% to about 7%, preferably from about 4% to less than 7%, and preferably from about 5% to about 6%.
  • the alloy may further comprise one or more additional components, such as carbon, phosphorus and/or sulfur, and combinations thereof.
  • the carbon is present in an amount of no more than about 1.5%, preferably no more than about 1.4%, preferably no more than about 1.3%, preferably no more than about 1.2%, preferably no more than about 1.1 %, and preferably no more than about 1%. Carbon may be present in the alloy in an amount of at least about 0.3%, or at least about 0.4%, or at least about 0.5%, or at least about 0.6%, or at least about 0.7%, or at least about 0.8%.
  • the carbon content in the alloy may be from about 0.3% to about 1.5%, or from about 0.4% to about 1.4%, or from about 0.5% to about 1.3%, or from about 0.6% to about 1.2%, or from about 0.7% to about 1.1 %, or from about 0.8% to about 1.1 %, or from about 0.8% to about 1%.
  • the phosphorous content in the alloy is no more than about 0.15%, preferably no more than about 0.14%, preferably no more than about 0.13%, preferably no more than about 0.12%, preferably no more than about 0.11%, and preferably no more than about 0.10%.
  • Phosphorous may be present in the alloy in an amount of at least about 0.01%.
  • the phosphorous content in the alloy is typically from about 0.01% to about 0.15%, preferably from about 0.01% to about 0.14%, preferably from about 0.01% to about 0.13%, preferably from about 0.01% to about 0.12%, preferably from about 0.01% to about 0.11%, and preferably from about 0.01% to about 0.10%.
  • the sulfur content in the alloy is no more than about 0.07%, preferably no more than about 0.06%, and preferably no more than about 0.05%.
  • Sulfur may be present in the alloy in an amount of at least about 0.01%.
  • the sulfur content in the alloy is typically from about 0.01% to about 0.07%, preferably from about 0.01% to about 0.06%, and preferably from about 0.01% to about 0.05%.
  • alloys which comprise at least about 80% iron, no more than about 8.5% silicon, and from about 3% to about 6% chromium.
  • alloys which comprise at least about 80% iron, no more than about 8.3% silicon, from about 3% to about 7% chromium, and from about 0.3% to about 1.5% carbon.
  • the alloy is preferably in particulate form.
  • the particles of the alloy preferably have a particle size such that at least about 70%, preferably at least about 80%, preferably at least about 90%, preferably at least about 95%, preferably at least about 97% of the particles of the alloy pass through a sieve having a mesh aperture of about 1 mm, preferably a mesh aperture of about 900 ⁇ m, preferably a mesh aperture of about 800 ⁇ m, preferably a mesh aperture of about 700 ⁇ m, preferably a mesh aperture of about 600 ⁇ m, preferably a mesh aperture of about 500 ⁇ m, preferably a mesh aperture of about 400 ⁇ m and preferably a mesh aperture of about 300 ⁇ m, preferably at mesh aperture of about 250 ⁇ m, preferably a mesh aperture of about 212 ⁇ m.
  • the particle size is such that at least about 90%, preferably at least about 95%, preferably at least about 97% pass through a sieve having a mesh aperture of about 212 ⁇ m.
  • the shape of the alloy particles depends upon the way in which the particles are made.
  • the particles may be substantially round if the alloy is made by an atomization technique, or sharp-edged if the alloy is made by a milling technique.
  • the particles are made by an atomization technique.
  • the alloy particles are preferably substantially round.
  • the alloy for use in the invention can be supplied in various forms depending on the intended use and the form of the material that is to be separated into its constituent parts.
  • the different forms of the alloy can have different particle size distributions. Within the generic ranges set out above, suitable particle size distributions can be selected from:
  • the specific gravity (as defined herein) of the alloy for use in the invention is preferably in the range of from about 6.5 g/cm 3 to about 7.3 g/cm 3 , preferably from about 6.6 g/cm 3 to about 7.2 g/cm 3 , and preferably from about 6.7 g/cm 3 to about 7.1 g/cm 3 .
  • the alloy disclosed herein is produced in a furnace at a temperature of preferably at least about 1,500°C, and preferably at least about 1,600°C. Maintaining the temperature above 1,500°C ensures good melting, it assists in fluxing and it helps achieve a homogeneous alloy prior to atomization or milling.
  • the particles of the alloy are preferably obtained by atomization, but there are other methods that could be used that are familiar to the skilled person, e.g. such as milling. Atomization is preferred, because particles obtained typically have a high degree of roundness.
  • An example of an atomization technique involves feeding the molten alloy into an atomizing nozzle. Particles of the alloy can then be obtained by introducing a stream of the molten alloy from the atomizing nozzle into a cone of steam, an inert gas or a stream of high pressure water. The molten alloy is broken into fine particles that are substantially round. The particles of the alloy can be subsequently dried and/or filtered to remove any oversize material. Optionally, the particles and/or any oversize material can be crushed or milled to produce sharp-edged particles.
  • the alloy can be obtained by a milling method in which the molten alloy is subsequently water-cooled or air-cooled, dried, milled and classified into various grades. Unlike an atomization process, the milled particles are sharp-edged and they are not uniform in shape.
  • the alloy described herein finds particular utility in separation processes, particularly so-called dense media separation processes.
  • the alloy is suitably used in particulate form as the solid that is present in a liquid carrier to form a dense medium for use in such processes.
  • the alloy described herein is particularly advantageous because it provides compositions having a specific gravity similar to that of corresponding iron-containing compositions. Moreover, it retains its magnetic properties and the chromium content should make it more resistant to corrosion (e.g. rust) when compared with an existing alloy comprising 15% silicon and 85% iron. When compared to existing alloys, lower amounts of the alloy for use in the present invention can be used to achieve a greater range of operating densities, which improves separation efficiency because the viscosity of the resultant suspension is reduced.
  • composition comprising the particulate alloy as described herein and further comprising a liquid carrier, preferably wherein the liquid carrier is water.
  • liquid carrier is water.
  • said composition is a suspension of said particulate alloy in said liquid carrier.
  • the composition comprises preferably from about 8 wt% to about 58 wt% of the particulate alloy relative to the total weight of the composition, preferably 11 wt% to about 58 wt%, preferably from about 15 wt% to about 58 wt%, preferably from about 29 wt% to about 58 wt%, preferably from about 31 wt% to about 56 wt%, preferably from about 32 wt% to about 55 wt%, preferably from about 34 wt% to about 53 wt%, preferably from about 35 wt% to about 52 wt%, and preferably from about 37 wt% to about 50 wt%.
  • suitable amounts of the particulate alloy relative to the total weight of the composition include:
  • the apparent density of the composition is preferably in the range of from about 1.5 g/cm 3 to about 4.6 g/cm 3 , preferably from about 1.7 g/cm 3 to about 4.6 g/cm 3 , preferably from about 1.9 g/cm 3 to about 4.6 g/cm 3 , preferably from about 2.8 g/cm 3 to about 4.6 g/cm 3 , preferably from about 2.9 g/cm 3 to about 4.5 g/cm 3 , preferably from about 3.0 g/cm 3 to about 4.4 g/cm 3 , preferably from about 3.1 g/cm 3 to about 4.3 g/cm 3 , preferably from about 3.2 g/cm 3 to about 4.2 g/cm 3 , preferably from about 3.3 to about 4.1 g/cm 3 .
  • suitable apparent densities of the composition are:
  • a separation process comprising the steps of contacting a separating means with a feed material, and separating at least one component of said feed material from at least one other component of said feed material, wherein said separating means is a composition comprising the particulate alloy described herein and a liquid carrier.
  • the separation process is a dense media separation process.
  • the separation process comprises the steps of:
  • the dense media separation vessel comprises two chambers, each comprising a dense medium having two different apparent densities.
  • the apparent density of the first chamber is lower than the apparent density of the second chamber.
  • the apparent density of the dense medium in the first chamber is preferably from about 1.5 g/cm 3 to about 2.3 g/cm 3 , preferably from about 1.6 g/cm 3 to about 2.2 g/cm 3 , preferably from about 1.7 g/cm 3 to about 2.1 g/cm 3 , preferably from about 1.8 g/cm 3 to about 2.0 g/cm 3 .
  • the apparent density of the dense medium in the second chamber is preferably from about 2.7 g/cm 3 to about 3.5 g/cm 3 , preferably from about 2.8 g/cm 3 to about 3.4 g/cm 3 , preferably from about 2.9 g/cm 3 to about 3.3 g/cm 3 , preferably from about 3.0 g/cm 3 to about 3.2 g/cm 3 .
  • a dense media separation vessel having two chambers which comprises a first chamber in which is contained a dense medium having an apparent density of from about 1.5 g/cm 3 to about 2.3 g/cm 3 and a second chamber in which is contained a dense medium having an apparent density of from about 2.7 g/cm 3 to about 3.5 g/cm 3 .
  • a dense media separation vessel having two chambers which comprises a first chamber in which is contained a dense medium having an apparent density of from about 1.8 g/cm 3 to about 2.0 g/cm 3 and a second chamber in which is contained a dense medium having an apparent density of from about 3.0 g/cm 3 to about 3.2 g/cm 3 , or a first chamber in which is contained a dense medium having an apparent density of from about 1.6 g/cm 3 to about 2.2 g/cm 3 and a second chamber in which is contained a dense medium having an apparent density of from about 2.9 g/cm 3 to about 3.3 g/cm 3 .
  • the process comprises a step in which the particulate alloy is separated from the components separated from the feed material, and the particulate alloy is collected and reintroduced into the dense media separation vessel.
  • At least one component of the feed material has a specific gravity that is less than the apparent density of said composition (i.e. the dense medium).
  • the dense media separation vessel is a tank, a drum, or it is substantially conical in shape.
  • the dense media separation vessel may be static.
  • the dense media separation vessel is dynamic to aid separation of the feed material into its component parts.
  • Said composition (i.e. the dense medium) and said feed material may be added to the dense media separation vessel sequentially or simultaneously.
  • said composition is added to the dense media separation vessel before the feed material.
  • said composition (i.e. the dense medium) and said feed material are agitated to aid separation of the material into its component parts and minimize or prevent sedimentation.
  • Agitation may be achieved by any suitable or conventional means, for instance by stirring or by rotation of the dense media separation vessel.
  • agitation may be achieved by centrifugal force using a cyclone.
  • the particulate alloy or composition described herein as a separating means in a separation process for the separation of a feed material, wherein at least one component of the feed material is separated from at least one other component of said feed material.
  • the separation process is dense media separation, preferably as described herein.
  • the liquid carrier is preferably water, and a further advantage of the alloy for use in the present invention is that the chromium content should make it more resistant to corrosion (e.g . rust) when compared with an existing alloy comprising 15% silicon and 85% iron.
  • the particulate alloy disclosed herein forms a stable suspension in the liquid carrier (particularly water), which results in a consistent density gradient and a sharp degree of separation. Moreover, the alloy can be recovered easily, which reduces the overall consumption of the alloy when used in a dense media separation process.
  • the specific gravity is measured using a specific gravity flask (also called a Le Chatelier Flask).
  • the body of the flask holds approximately 250 cm 3 .
  • the oval bulb of the flask holds 17 cm 3 .
  • the volume below the bulb is graduated from 0 to 1.0 cm 3 in 0.1 cm 3 subdivisions, with an additional subdivision below the 0 cm 3 mark and an additional subdivision above the 1.0 cm 3 mark.
  • the neck of the flask is graduated from 18 to 24 cm 3 in 0.1 cm 3 subdivisions above the bulb and sealed with a stopper.
  • the stopper has a tapered portion that is 23mm long with a diameter ranging from 14mm to 12mm along the tapered portion.
  • the flask, water and material to be tested must be allowed to equalise at room temperature ( Supra ) and atmospheric pressure ( Supra ) for at least 24 hours prior to the test.
  • the flask is filled with water to the 0 cm 3 mark on the neck of the flask.
  • the inside of the flask will be dried above the level of the liquid (water).
  • the material to be tested (the alloy) is weighted at 140g and added to the flask containing water to the zero mark on the flask. As material is added to the flask, the water level will rise as it is displaced. The material should not be allowed to adhere to the sides of the flask above the level of the liquid.
  • the stopper is placed in the flask and the flask is rolled. To remove air from the material, the flask is gently agitated by for example tapping until no further air bubbles rise to the surface of the liquid. After no further air bubbles are seen, the level of the liquid will be in its final position, which can be measured by reading the bottom of the meniscus of the liquid against the series of graduation marks in the neck of the flask.
  • the difference between the first and final readings on the stem of the flask represents the volume of liquid displaced by the mass of the material used in the test.
  • Apparent density in the context of the present invention refers to the weight of a sample of the composition (i.e. the dense medium) per unit volume.
  • the apparent density can be determined by the following protocol.
  • a dry vessel of known volume e.g . a 1 L measuring cylinder
  • a sample of the composition i.e. the dense medium
  • the measuring cylinder containing 1 L the sample is re-weighed.
  • the difference between the weight of the measuring cylinder and the weight of the measuring cylinder containing the sample is calculated.
  • the apparent density is determined by the mass of material divided by the volume of the cylinder.
  • media refers to a solid material that is added to a liquid carrier to alter the density of the liquid carrier and form a suspension.
  • the resulting suspension is referred to as a "dense medium”.
  • heavy liquid refers to a liquid that is used in a dense media separation process that has a density greater than that of water (999.97 kg/m 3 ).
  • round includes shapes that are substantially spherical and those that are substantially spheroidal.
  • composition comprising X may consist exclusively of X or may include something additional e.g . X + Y.
  • the term “substantially” means that the subsequently described event or circumstance completely occurs or that the subsequently described event or circumstance occurs to a great extent or degree.
  • the term “substantially” means that the subsequently described event or circumstance occurs at least 90% of the time, or at least 95% of the time, or at least 98% of the time. Where necessary, the word “substantially” may be omitted from the definition of the invention.
  • May means that the subsequently described event of circumstances may or may not occur, and that the description includes instances where said event or circumstance occurs and instances in which it does not.
  • Fig. 1 - shows a schematic of a typical apparatus used in dense media separation.
  • the invention is illustrated by the following non-limiting example.
  • a bulk alloy comprising no more than about 8.5% silicon and from about 2 to about 7% chromium and a balance of iron was melted in a furnace at a temperature of at least about 1,500°C.
  • the molten alloy was poured through the nozzle of an atomizer.
  • the stream of molten alloy interacts with a spray of high pressure water to produce substantially round particles.
  • the particles were quenched and filtered and found to have a particles size such that at least about 90% of the particles of the alloy pass through a sieve having a mesh aperture of about 1 mm.
  • the particles of the alloy were found to be excellent when used in a suspension with water to form a heavy liquid for dense media separation.
  • the particles of the alloy are mixed with water to form a composition that has an apparent density between the specific gravities of the two materials for separation.
  • the lighter one floats and can be collected separately from the heavy fraction, which sinks and can be collected separately.
  • An alloy of the present invention comprising 8% silicon, 85% iron and 7% chromium has a specific gravity as set out below.
  • S . G . Si d e n s i t y o f silicon ⁇ p e r c e n t a g e s i l i c o n content
  • S . G . Si 2.33 ⁇ 0.08
  • S . G . Si 0.1864 ⁇ g / c m 3 S . G .
  • An existing alloy comprising 15% silicon and 85% iron has a specific gravity of 7.022, which can be calculated as set out below.
  • S . G . Si d e n s i t y o f silicon ⁇ p e r c e n t a g e s i l i c o n content S .
  • G . Si 2.33 ⁇ 0.15 S .
  • G . Si 0.3495 g / c m 3
  • S . G . Fe d e n s i t y o f iron ⁇ p e r c e n t a g e i r o n content S . G .
  • the alloy of Comparative Example 1 has a specific gravity that is 5% lower than the alloy of Example 2, which means a lower amount of the alloy of Example 2 can be used to achieve the same apparent densities in use.
  • the practical consequence is that the viscosity of a composition comprising the alloy of Example 2 and water is less than the viscosity of a composition comprising the alloy of Comparative Example 1, which aids separation.

Claims (15)

  1. Trennverfahren, umfassend die Schritte des Inkontaktbringens eines Trennmittels mit einem Zuführmaterial und Trennen von mindestens einer Komponente des Zuführmaterials von mindestens einer anderen Komponente des Zuführmaterials, wobei das Trennmittel eine Zusammensetzung ist, umfassend:
    einen flüssigen Träger, und
    eine Legierung in Teilchenform, umfassend
    i) mindestens 80 Gew.-% Eisen;
    ii) nicht mehr als 8,5 Gew.-% Silicium; und
    iii) von 2 bis 7 Gew.-% Chrom.
  2. Verfahren nach Anspruch 1, wobei es sich um ein Dichtmedien-Trennverfahren handelt.
  3. Verfahren nach einem der vorhergehenden Ansprüche, umfassend die Schritte:
    (i) Bereitstellen der Zusammensetzung, wobei vorzugsweise die Zusammensetzung eine Suspension der teilchenförmigen Legierung in dem flüssigen Träger ist;
    (ii) Bereitstellen eines Zuführmaterials, das getrennt werden soll, wobei das Zuführmaterial wahlweise in dem flüssigen Träger vorliegt;
    (iii) Inkontaktbringen der Zusammensetzung aus Schritt i) mit dem Zuführmaterial aus Schritt ii), vorzugsweise in einem Behälter für die Trennung von Dichtmedien;
    (iv) Trennen mindestens einer Komponente aus dem Zuführmaterial; und
    (v) Sammeln der mindestens einen getrennten Komponente.
  4. Verfahren nach einem der vorhergehenden Ansprüche, wobei der flüssige Träger Wasser ist.
  5. Verwendung der Zusammensetzung wie in Anspruch 1 definiert als ein Trennmittel in einem Trennverfahren zur Trennung eines Zuführmaterials, wobei mindestens eine Komponente des Zuführmaterials von mindestens einer anderen Komponente des Zuführmaterials getrennt wird.
  6. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei der Eisengehalt in der Legierung mindestens 83 Gew.-% oder mindestens 85 Gew.-% beträgt.
  7. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei der Siliciumgehalt in der Legierung nicht mehr als 8,4 Gew.-% oder von 7,0 bis 8,4 Gew.-% beträgt.
  8. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei der Chromgehalt in der Legierung von 3 bis weniger als 7 Gew.-% oder von 4 bis 6 Gew.-% beträgt.
  9. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei die Legierung ferner Kohlenstoff umfasst, wobei der Kohlenstoffgehalt vorzugsweise nicht mehr als 1,5 Gew.-% beträgt.
  10. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei die Legierung ferner Phosphor umfasst, wobei der Phosphorgehalt vorzugsweise nicht mehr als 0,15 Gew.-% beträgt.
  11. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei die Legierung ferner Schwefel umfasst, wobei der Schwefelgehalt vorzugsweise nicht mehr als 0,07 Gew.-% beträgt.
  12. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei die Legierungsteilchen im Wesentlichen rund sind.
  13. Verfahren oder Verwendung nach Anspruch 12, wobei 70% der Teilchen in der Legierung ein Sieb mit einer Maschenweite von 1 mm durchlaufen oder mindestens 90% der Teilchen ein Sieb mit einer Maschenweite von 212 µm durchlaufen.
  14. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei die Legierung eine spezifische Schwere von 6,5 g/cm3 bis 7,3 g/cm3 aufweist.
  15. Verfahren oder Verwendung nach einem der vorhergehenden Ansprüche, wobei die Zusammensetzung eine scheinbare Dichte von 1,5 g/cm3 bis 4,6 g/cm3 aufweist oder die Zusammensetzung von 8 Gew.-% bis 58 Gew.-% der teilchenförmigen Legierung bezogen auf das Gesamtgewicht der Zusammensetzung umfasst.
EP15176162.4A 2015-07-09 2015-07-09 Legierung und trennverfahren Not-in-force EP3115112B1 (de)

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Application Number Priority Date Filing Date Title
EP15176162.4A EP3115112B1 (de) 2015-07-09 2015-07-09 Legierung und trennverfahren
ES15176162.4T ES2667809T3 (es) 2015-07-09 2015-07-09 Aleacion y proceso de separación

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EP15176162.4A EP3115112B1 (de) 2015-07-09 2015-07-09 Legierung und trennverfahren

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EP3115112A1 EP3115112A1 (de) 2017-01-11
EP3115112B1 true EP3115112B1 (de) 2018-04-18

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