WO2015007661A1 - Composition comprenant un ou des composes calco-magnesiens sous forme de compacts - Google Patents
Composition comprenant un ou des composes calco-magnesiens sous forme de compacts Download PDFInfo
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- WO2015007661A1 WO2015007661A1 PCT/EP2014/064982 EP2014064982W WO2015007661A1 WO 2015007661 A1 WO2015007661 A1 WO 2015007661A1 EP 2014064982 W EP2014064982 W EP 2014064982W WO 2015007661 A1 WO2015007661 A1 WO 2015007661A1
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- 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
- C04B9/00—Magnesium cements or similar cements
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/14—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/24—Magnesium carbonates
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/308—Iron oxide
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/36—Inorganic materials not provided for in groups C04B14/022 and C04B14/04 - C04B14/34
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
-
- 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2200/00—Recycling of waste material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/076—Use of slags or fluxes as treating agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the present invention relates to a composition
- a composition comprising at least one calco-magnesium compound corresponding to the formula aCaC03.bMgC0 3 .xCa0.yMg0.zCa (OH) 2 .tg (OH) 2.ul, in which I represents impurities, a, b, z, t and u being mass fractions each> 0 and ⁇ 50%, x and y being mass fractions each> 0 and ⁇ 100%, with x + y> 50% by weight, based on the total weight of said at least one calco-magnesium compound, said composition having a cumulative content of calcium and magnesium in the form of oxides greater than or equal to 20% by weight relative to the total weight of the composition.
- Calco-Magnesian compounds are used in many industries, such as in the iron and steel industry, gas treatment, water and sludge treatment, agriculture, construction and civil engineering. .. They can be used either in rock, or in the form of fines (size typically less than 7 mm). In some industries, the rock form is nevertheless preferred. This is for example the case in the steel industry when adding calco-magnesium compounds in oxygen converters or electric arc furnaces.
- lime producers maintain a material balance between the calcium-magnesium compounds in rock and the fines generated before and during the calclnion and during subsequent manipulations and operations. In some cases, however, an excess of fines is produced. These fines can then be agglomerated together in the form of briquettes or the like, which not only eliminates excessive fines but also artificially increases production of calc-magnesium compounds in rock by adding these briquettes or the like.
- briquettes or the like generally have a lower mechanical strength than that of calcium-magnesium compounds in rock. They also often have aging resistance during storage or handling much lower than that of calcium-magnesium compounds in rock. In general, it is the presence of macroguerfauts which is at the origin of these less good properties but also the absence of strong chemical bonds at the interface between the grains. This explains why in practice the briquettage fines calco-magenteiens compounds is little used industrially to date. Given the low quality of compacts formed by this type of process, it is estimated that briquetting offers a yield of less than 50% as there are compacts unusable out of this type of process that require a recycling step.
- macrodéfauts means any type of cracks, cracks, cleavage plane and the like observable with the naked eye, optical microscope or scanning electron microscope (SEM).
- Briquettes or the like based on calco-magnesian compounds can also be consolidated by carrying out a heat treatment at a very high temperature which leads to the sintering of said briquettes or the like.
- a heat treatment of one to several hours at a temperature above 1200 ° C., and even ideally above 1300 ° C., leads to increasing the mechanical properties of said briquettes.
- Such a heat treatment at very high temperature nevertheless leads to an evolution of the textural characteristics of the aforementioned briquettes, in particular it leads to a sharp decrease in both the specific surface area and the pore volume. This is also accompanied by a sharp decrease in water reactivity as described in EN 459-2: 2010 E, which presents many problems for some applications.
- the object of the invention is to overcome the drawbacks of the state of the art by providing a composition in the form of a compact product comprising at least one calco-magnesium compound with the formula aCaC0 3 .bMgC0 3 .xCa0.yMg0.zCa (OH) 2 .tl ⁇ / lg (OH) 2.u !, in which I represents impurities, a, b, z, t and u being fractions each mass> 0 and ⁇ 50%, x and y being mass fractions each> 0 and ⁇ 100%, with x + y> 50%, said composition having a cumulative content of calcium and magnesium in oxide form greater than or equal to at 20% by weight relative to the total weight of the composition, which differs from the products known to date by a particularly high resistance to falling as well as good resistance to aging in a humid atmosphere, while having advantageous textural characteristics , in particular a specific surface area and / or a high pore volume.
- This compact product is preferably a compact product based on calcium and / or magnesium oxide, for example comprising calcium, magnesium or dolomite quicklime or live dolostone.
- a, b, z, t and u can take any value between 0 and 50%.
- the composition may be derived from a natural product, more or less cooked, more or less hydrated or not, but which will always comprise at least 50% by weight of live products (that is to say based on oxides of calcium and / or magnesium).
- the composition may also be derived from mixing one or more calcium or magnesium compounds.
- the composition may comprise more than one calco-magnesium compound as described above or other added products, mineral or organic.
- Mg (OH) 2 in calco-magnesium compounds can easily be determined by conventional methods. For example, they can be determined by X-ray fluorescence analysis, the protocol of which is described in EN 15309, coupled with a measurement of the loss on ignition and a volumetric CO2 measurement according to EN 459-2: 2010 E.
- the calcium and magnesium oxide content in the composition can also be determined by the same methods in the simplest cases. In more complicated cases, such as, for example, compositions containing various mineral or organic additives, one skilled in the art will be able to adapt the battery of characterization techniques to be used to determine these calcium and magnesium contents in the form of oxide.
- thermogravimetric ACG
- thermodifferential ATD
- XRD X-ray diffraction analysis
- a composition as indicated at the beginning characterized in that the said at least one calcium-magnesium compound is in the form of particles, the said composition being in the form of compacts, each compact being formed at least of the said particles calco-magnesian compounds compacted and shaped, said compact having a test Shatter index of less than 10%.
- compact means fines or mixtures of fines
- tablet means objects shaped by a technology of compaction or compression of fines because of the combined action of two pistons (one in the up position and the other in the down position). ) on said fines placed in a cavity.
- tablette therefore encompasses all the shaped objects belonging to the family of tablets, tablets or even tablets, and generally objects having various three-dimensional shapes such as a cylindrical shape, octagonal, cubic or rectangular for example.
- Said technology generally uses rotary presses or hydraulic presses.
- the term "briquette” means objects shaped by a technology for compacting or compressing fines because of the combined action of two tangential rollers (generally cylinders with cavities forming molds corresponding substantially to the desired shape and dimensions for the briquette) on said fines whose feed is forced by a worm.
- the term “briquette” therefore includes all the shaped objects belonging to the family of briquettes, balls, soaps or else :. more platelets.
- Said technology generally uses tangential roll presses.
- the term “Shatter Test Number” is intended to mean the mass percentage of fines less than 10 mm generated at the end of 4 drops of 2 m from 0.5 kg of product greater than 10 mm. These 4 falls are made using a tube 2 m long and 40 cm in diameter with removable bottom (receptacle).
- the base of the receptacle is a polypropylene plate 3 mm thick. The receptacle rests on a concrete self.
- the compact product of the present invention will be distinguished in the form of tablets or briquettes, with respect to rock products derived from the calcination of limestone or dolomite rocks, considering the internal texture. It is easy to demonstrate, by simple observation with the naked eye, optical microscope or scanning electron microscope (SEM), the particles constituting the compact product of this invention unlike the rock products from calcination which have a homogeneous surface in which the constituent particles are indistinguishable.
- the compact product resulting from the present invention can also be distinguished in the form of tablets or briquettes, by compared to products in the form of briquettes and the like known to date, also considering the internal texture.
- the compact product of this invention is free from macroscopic defects or macrodéfauts, which have a negative influence on the resistance to falling, such as cracks or cracks, unlike products in the form of briquettes and the like known to date which contain cracks from a few hundred micrometers to a few millimeters long and from a few micrometers to a few hundred micrometers wide, which can be easily detected by a simple observation at the naked eye, optical microscope or scanning electron microscope (SEM).
- the composition is in the form of a compact product very resistant to falling and aging in a humid atmosphere, which is particularly important for subsequent uses where the fines can not be used.
- the composition according to the invention therefore allows the exploitation of fine particles of calco-magnesium compound having a dioo less than or equal to 7 mm in applications of calco-magnesian compounds which hitherto prohibited it.
- Said at least one calco-magnesian compound according to the present invention is therefore at least formed of quicklime, dolomitic quicklime, magnesium quicklime or cooked dolomite ("dolime" in English) from cooking limestones or dolomites natural.
- the impurities include in particular all those found in limestones and natural dolomites such as silico-aluminate clays, silica, impurities based on iron or manganese, etc.
- composition according to the invention can therefore also comprise calcium or magnesium carbonates such as incuites resulting from the baking of limestones or natural dolomites or else the products resulting from the re-carbonation of calc-magnesium compounds. Finally, it can also include hydroxides of calcium or magnesium resulting from the hydration (extinction) of calco-magnesian compounds.
- the calco-magnesium compound comes in whole or in part from the recycling of co-products, in particular steel slags from the converters.
- Such slags typically have a mass content of 40 to 70% CaO and 3 to 15% MgO.
- said at least one calco-magnesium compound has mass fractions such that x + y> 60%, preferably> 75%, preferably> 80%, and even more preferably > 90%, more particularly> 93%, or even> 95% by weight, relative to the total weight of said at least one calco-magnesium compound.
- said at least one caico-magnesium compound is predominantly a compound based on calcium oxide and / or magnesium and is therefore a bright calco-magnesium compound.
- the composition according to the invention has a cumulative content of calcium and magnesium in the form of oxides of greater than or equal to 40% by weight, advantageously> 60% by weight, preferably 80% by weight, in particular > 90% by weight, preferably 93% by weight, or even equal to 95% by weight relative to the total weight of the composition.
- said compacts have a Shatter Test Index of less than 8%. More particularly, according to the present invention, said compacts have a Shatter Test Index of less than 6%. Particularly advantageously, said compacts have a Shatter Test Index of less than 4%. And even more particularly advantageously, said compacts have a Shatter Test Index of less than 3%.
- the composition according to the present invention has a specific surface area measured by manometry nitrogen adsorption after degassing in vacuo at 19 ° C. for at least 2 hours and calculated according to the multi-point BET method as described in the ISO 9277: 2010E standard greater than or equal to 0.4 m 2 / g, preferably greater than or equal to 0.6 m 2 / g, more preferably greater than or equal to 0.8 m 2 / g and even more preferably greater than or equal to 1.0 m 2 / g and in particular greater than or equal to at 1, 2n Yg, which is much higher than the sintered products which generally have a specific surface area of less than or equal to 0.1 m 2 / g.
- the composition has a relatively high specific surface area compared to the sintered briquettes above, in particular by preserving the intrinsic properties / structural characteristics of the calco-magnesian compound before shaping.
- Said composition is further characterized in that its total pore volume (determined by mercury intrusion porosimetry according to Part 1 of ISO 15901-1: 2005E which consists in dividing the difference between the skeletal density, measured at 30000 psia, and the apparent density, measured at 0.51 psia, by the skeletal density) is greater than or equal to 20%, preferably greater than or equal to 25% and even more preferably greater than or equal to 30%, which is much greater than the products frits which generally have a total pore volume of less than or equal to 10%.
- the composition according to the invention has a relatively high total pore volume relative to the sintered briquettes above, in particular by preserving the intrinsic properties / structural characteristics of the calco-magnesium compound before shaping.
- said composition has a homogeneous density distribution within the compact.
- the proposed compaction method using a uniaxial press makes it possible to form compacts where the density is substantially the same according to the longitudinal direction (that is to say according to the longitudinal axis of movement of the punches) and in the transverse direction (that is to say perpendicular to the longitudinal axis of movement of the punches).
- said compacts also have a Shatter Test Index of less than 20%, preferably less than 10% after a Level 1 Accelerated Aging Test at 30 ° C at 75% relative humidity (ie 22.8%). g / m 3 absolute humidity) for 2 hours.
- accelerated aging test is understood to mean a two-hour aging carried out in a climatic chamber starting from 0.5 kg of product of size greater than or equal to 10 mm arranged in monolayer on a grid placed on its own. even above a receptacle, so that the contact between the product and the humid atmosphere is optimal, that is to say that each of said compacts constituting the product is spaced from the other compacts by at least 1 cm.
- the increase in mass during aging quantifies the water intake and thus the hydration of the composition.
- the Shatter Test Index measured after aging is obtained from the entire product, that is, even if the Accelerated Aging Test has itself generated fines, they are well accounted for in the final result.
- the Accelerated Aging Test can be performed with different conditions of temperature and relative humidity - and thus absolute humidity - so as to modulate its intensity.
- Four intensity levels ranging from 1 (the least severe test) to 4 (the most severe test) were used: level 1: 30 ° C. and 75% relative humidity, giving an absolute humidity of 22.8 g / m 3 ;
- level 2 40 ° C. and 50% relative humidity, giving an absolute humidity of 25.6 g / m 3 ;
- level 3 40 ° C. and 60% relative humidity, giving an absolute humidity of 30.7 g / m 3 ;
- said compacts have a Shatter Test Index of less than 20%, preferably less than 10%, after a Level 2 Accelerated Aging Test at 40 ° C at 50% relative humidity (ie 25.6 g). / m 3 absolute humidity) for 2 hours.
- said compacts have a Shatter Test Index of less than 20%, preferably less than 10%, after a Level 3 Accelerated Aging Test at 40 ° C. at 60% relative humidity (ie 30.7%). g / m 3 absolute humidity) for 2 hours.
- said compacts have a Shatter Test Index of less than 20%, in particular less than 0%, more particularly less than 5% and even more particularly less than 3%, after an Accelerated Aging Test. level 4 at 40 ° C at 70% relative humidity (ie 35.8 g / m 3 absolute humidity) for 2 hours.
- the compact may contain organic additives such as binders or even lubricants but it can also be free from the presence of these organic additives.
- the percentage of organic carbon present in the composition according to the invention can be calculated by difference between the percentage of total carbon and the percentage of carbon of mineral origin.
- the total carbon is measured for example by C / S analysis according to ASTM C25 (999) and the carbon of mineral origin is determined for example by determination of volumetric C0 2 according to EN 459-2: 2010 E.
- said particles have a size of less than or equal to 7 mm, which can be observed by optical microscopy or by scanning electron microscopy and, before compacting, have a particle size of less than or equal to 100. 7 mm, in particular less than or equal to 5 mm, measured for example by sieving.
- the composition is thus in the form of compacts which are initially obtained from fines composed of particles of calco-magnesian compounds having a dioo of less than or equal to 7 mm and which are finally very resistant to falling and falling. aging in a humid atmosphere, which is particularly important for subsequent uses where the fines can not be used.
- the composition according to the invention therefore makes it possible, inter alia, as mentioned above, to exploit fine particles of calco-magnesium compounds having a d-mo of less than or equal to 7 mm in applications of calcium-magnesium compounds which banned so far.
- the notation d x represents a diameter, expressed in mm, with respect to which X% by mass of the measured particles are smaller or equal.
- said particles of calcium-magnesium compounds have, prior to compaction, a dgo less than or equal to 3 mm, in particular less than or equal to 2 mm.
- said particles of calco-magnesium compounds have, prior to compaction, a d 50 less than or equal to 1 mm, in particular less than or equal to 500 ⁇ m, and a d 50 greater than or equal to 0.1 ⁇ m, in particular greater than or equal to at 0.5 ⁇ m, in particular greater than or equal to 1 ⁇ m.
- said compacts are of regular and homogeneous form, typical of the products resulting from dry fines forming processes, for example chosen from the group of tablets or briquettes, and have a size between 10 and 100 mm, preferably greater than or equal to 15 mm, preferably greater than or equal to 20 mm, and preferably less than or equal to 70 mm, in particular less than or equal to 50 mm.
- said compacts have an average weight per compact of at least 1 g, preferably at least 5 g, preferably at least 10 g and in particular at least 15 g.
- said compacts have an average weight per compact of less than or equal to 200 g, preferably less than or equal to 50 g, preferably less than or equal to 100 g and in particular less than or equal to 50 g. boy Wut.
- said compacts have a bulk density of between 1.5 and 3, advantageously between 1.5 and 2.8 and preferably between 1.7 and 2.6.
- said compact comprises a through orifice.
- the composition according to the invention also comprises one or more oxides based on aluminum, in particular at a content ranging from 1 to 30% and preferably from 5 to 20% by weight per relative to the total weight of the composition, expressed in equivalent AI 2 O 3 , such as corundum, bohemite or amorphous alumina.
- the composition according to the invention also comprises one or more hydroxides based on aluminum, in particular at a content in the range from 1 to 30% and preferably 5 to 20% by weight relative to the total weight of the composition, expressed in Al 2 0 3 equivalent, such as for example bohemite, gibbsite, or diaspore.
- the composition may also comprise one or more oxides based on silicon, in particular at a content ranging from 1 to 30% and preferably from 5 to 20% by weight relative to the weight. total of the composition, expressed in SiO 2 equivalent, such as fumed silica or precipitation silica.
- the composition may also comprise one or more hydroxides based on silicon, in particular at a content ranging from 1 to 30% and preferably from 5 to 20% by weight relative to the weight. total of the composition, expressed as SiO 2 equivalent.
- the composition according to the invention also comprises one or more iron-based oxides, in particular at a content ranging from 1 to 30. % and preferably from 5 to 20% by weight relative to the total weight of the composition, expressed as Fe 2 O 3 equivalent, such as, for example, hematite, magnetite or even wustite.
- the composition according to the invention further comprises one or more iron-based hydroxides, in particular at a content ranging from 1 to 30% and preferably from 5 to 20% by weight. relative to the total weight of the composition, expressed as Fe 2 O 3 equivalent, such as, for example, goethite or limonite.
- the composition according to the present invention comprises one or more oxides based on manganese, in particular at a content ranging from 1 to 10% and preferably from 1 to 5% by weight relative to the total weight of the composition, expressed in MnO equivalent, such as for example pyrolusite or even MnO manganese monoxide.
- the composition according to the present invention comprises one or more manganese hydroxides, in particular at a content ranging from 1 to 10% and preferably from 1 to 5% by weight. relative to the total weight of the composition, expressed in MnO equivalent.
- the compact is in the form of a tablet.
- the present invention also relates to a composite material comprising several successive layers for forming a multilayer structure where at least one layer is formed of said compact product of the composition according to the invention.
- the present invention also relates to a method for manufacturing a composition in the form of a compact comprising the following successive steps:
- l represents impurities
- a, b, z, t and u being the mass fractions each> 0 and ⁇ 50%
- x and y are mass fractions each 0 and ⁇ 100%
- MPa and 700 MPa preferably between 250 MPa and 500 Pa, more preferably between 300 and 500 MPa, and still more preferably between 375 and 490 MPa,
- the method comprises, prior to said feeding step, a step of mixing the particles to form the composition of particles in order to obtain a homogeneous particle composition in which the particles are distributed homogeneously in the composition of particles for to ensure a good stability of the process and thus a good quality of compacts.
- composition of particles which is fed can contain, without being necessary, additives of an organic nature, for example conventional binders or lubricants, or of a mineral nature, for example oxides or hydroxides based on aluminum, in particular from 1 to 30% and preferably from 5 to 20%, expressed as Al 2 O 3 equivalent, of silicon, in particular of from 1 to 30% and preferably 5 to 20% expressed as SiO 2 equivalent, iron, in particular up to 1 to 30% and preferably 5 to 20% expressed in Fe 2 O 3 equivalent, of manganese, in particular of 1 to 10% and preferably 1 to 5% expressed in MnO equivalent.
- additives of an organic nature for example conventional binders or lubricants, or of a mineral nature, for example oxides or hydroxides based on aluminum, in particular from 1 to 30% and preferably from 5 to 20%, expressed as Al 2 O 3 equivalent, of silicon, in particular of from 1 to 30% and preferably 5 to 20% expressed as SiO 2 equivalent, iron, in particular up to 1 to 30% and preferably 5 to 20% expressed in Fe 2 O 3 equivalent, of
- mineral additives of a hardness greater than or equal to 5 on the Mohs scale characterized in that their particuies have a size of 10 o less than or equal to 200 pm, preferably less than or equal to 150 ⁇ and more preferably less than or equal to 100 ⁇ m.
- said feeding step of the particle composition is controlled and takes place in such a way that it is always the same quantity of said composition which is placed in said confined space between two punches.
- said confined space between said two punches is lubricated beforehand by means of a lubrication step during which a lubricant in the form of a powder, such as, for example, calcium stearate or magnesium is deposited on the surface of said confined space between said two punches, said lubricant in the form of powder being compacted with the particles of the particle composition and advantageously represents between 0.01 and 0.3% by weight, preferably between 0, 02 and 0.1% by weight relative to the total weight of the compact product.
- a lubricant in the form of a powder such as, for example, calcium stearate or magnesium
- This embodiment therefore offers the possibility of external lubrication, that is to say a lubrication of punches and dies, which is more economical than internal lubrication, which consists in adding a lubricant directly to the composition of the invention. compact and which usually requires 0.25% to 1% by weight of lubricant. This also avoids adding additional compounds in the composition to be compacted, thus avoiding the risk of denaturing.
- This method makes it possible to form a compact based on one or more calcium-magnesium compounds having a very good resistance to falling and good resistance to aging.
- this compact will also be distinguished from said process with respect to the products known to date, such as, for example, briquettes which come from forming processes using roller presses.
- the compact according to the invention is free from macrodéfauts such as cracks, cracks or plating, unlike products in the form of briquettes and the like known to date which contain cracks. from a few hundred micrometers to a few millimeters long and from a few micrometers to a few hundred micrometers wide that can be easily highlighted by simple observation with the naked eye, optical microscope or scanning electron microscope (SEM) ).
- a rotary press is used to perform the compression, but in general, the compaction system can be of any type, for example a hydraulic press can also be used. In principle these compaction systems comprise a matrix inside which can slide one or two punches, these elements forming said confinement space in which the composition is placed for compaction.
- This compaction constraint applied can consist in bringing the composition to a determined compaction pressure, which corresponds for the confined space between the two punches to a certain volume and therefore to a certain position of the punches, and to possibly maintain the position of these punches for a given time of up to fifty milliseconds, while knowing that a maintenance for a longer period is not harmful, but has no additional interest.
- a rotary punch press operates at high compaction pressures.
- the compaction system comprises a rotary plate having die-forming cavities within which one or two punches can slide, these elements forming a confinement space in which the composition is placed for compaction.
- said collected compact product is then heat-treated between 700 ° C. and 1200 ° C. for a predetermined period of time of between 1 and 90 minutes, preferably greater than or equal to 5 minutes and less or equal to 60 minutes, more particularly greater than or equal to 10 minutes and less than or equal to 30 minutes.
- the heat treatment is carried out at more than 800 ° C., advantageously at more than 900 ° C., and at less than 00 ° C., preferably at less than 1000 ° C.
- the heat treatment also includes ramps of ascent and descent temperature as short as possible so that the productivity of said heat treatment is optimal.
- This process makes it possible to form a compact based on one or more calcium-magnesium compounds having a very good resistance to falling and very good resistance to aging.
- a horizontal furnace such as for example a tunnel furnace, a passage furnace, a roller kiln (roll kiln) or a mesh belt kiln) is used to perform the heat treatment.
- a horizontal furnace such as for example a tunnel furnace, a passage furnace, a roller kiln (roll kiln) or a mesh belt kiln
- the method according to the invention further comprises a surface treatment step of said compact product collected, optionally after heat treatment if it is present, at a temperature greater than or equal to 50 ° C.
- the gas flow comprises a concentration of water vapor of between 5 and 25% by volume, and preferably between 5 and 15%.
- the gas flow comprises a concentration of CO2 in the gas of between 5 and 40% by volume, and preferably between 10 and 25%.
- the flow of gas used is derived from combustion fumes, for example from a traditional lime kiln.
- This process makes it possible to form a compact based on one or more calcium-magnesium compounds having a very good resistance to falling and very good resistance to aging.
- a vertical reactor counter-current fed compactly from above and gas from below is used to carry out said surface treatment.
- the increase in the temperature of the compact can be achieved directly by injecting said already hot gas or preheated gas, as would be for example the case from a gas from the combustion fumes.
- the present invention relates to a method of manufacturing a composite material comprising several successive layers to form a multilayer structure where at least one layer is formed of said compact product of the composition by the method according to the invention and comprising in addition, a step of additional compaction of said at least one layer of said compact product and another compact layer.
- the subject of the invention is also a use of the composition according to the present invention or resulting from the process according to the present invention in the iron and steel industry, in particular in oxygen converters or in electric arc furnaces, in the treatment of waste gases. fumes, in the treatment of water, in the treatment of sludge and waste water, in agriculture, construction and civil engineering, as for example for soil stabilization.
- Figure 1 is an SEM image (acronym for
- Figure 2 is a SEM image at 100x magnification, illustrating a live dolostone compact formed in accordance with the invention.
- Figure 3 is an SEM image at an enlargement of
- Figure 4 is a SEM image at a magnification of 100 times, illustrating a quicklime in crushed rock from a rotary kiln.
- a Eurotab rotary press of the "Mercury" type is used. Starting from about thirty kilograms of 0-3 mm quicklime fines, 9 g of these fines are successively poured into each of the dies of the tooling of cylindrical shape and with a diameter of 20 mm. It is compressed under a pressure of 400 MPa, with a punch approximation speed of 105 mm / s and a holding time of
- a Eurotab rotary press of the "Mercury" type is used. Starting from 30 kilograms of a mixture consisting of 50% 0-3 mm quicklime fines and 50% 0-3mm bright dolostone fines, 9 g of this mixture are poured successively into each of the matrices. tooling of cylindrical shape and diameter 20 mm. It is compressed under a pressure of 400 MPa, with a punch approaching speed of 105 mm / s and a holding time of 136 mS.
- a Eurotab rotary press of the "Titan" type is used. Starting from 30 kilograms of 0-3 mm quicklime fines, 23 g of these fines are successively poured into each of the dies of the cylindrical tooling and having a diameter of 26 mm. It is compressed under a pressure of 400 MPa, with a punch approaching speed of 128 mm / s and a holding time of 80 mS.
- a Gericke GCM450 powder mixer with a capacity of 10 dm 3 is used , equipped with standard 7 cm radius blades used in rotation at 350 rpm (ie 2.6 m / s).
- This mixer is used in continuous mode to prepare a mixture consisting of 90% by weight of 0-3 mm quicklime fines and 10% by weight of pre-dried Northland 0-50 ⁇ Iron Ore Powder (Moisture Content). 0.5% by weight).
- the total flow rate of the powder is 300 kg / h and the residence time is 3.5 s.
- the mixture obtained is very homogeneous. This means that the Fe 2 O 3 content for different 10 g samples taken from the final mixture is always between 9 and 11% (+/- 10% relative).
- a Eurotab "Titan" rotary press is used, which is also equipped with an external lubrication system consisting of depositing on the surface of each cavity, upstream of the filling, 0.02% by weight of calcium stearate powder. relative to the weight of each compact.
- 9.4 g of this mixture are successively poured into each of the dies of the tooling of cylindrical shape and of diameter 20 mm. It is compressed under a pressure of 450 MPa, with a speed of approximation of punches of 204 mm / s and a holding time of 70 mS.
- Shatter Test starting from 0.5 kg of these compacts by successively realizing 4 falls of 2 m. We weigh the quantity of fines less than 10 mm generated at the end of these 4 falls. A Shatter Test index of 1.0% is obtained.
- a type of industrial roller press is used
- Shatter Test starting from 0.5 kg of these briquettes by successively realizing 4 falls of 2 m. We weigh the amount of fines less than 10 mm generated at the end of these 4 falls. We obtain a Shatter Test Index of 6%.
- the lime was thus obtained at about 1200-1300 ° C with a residence time of 5-6 hours.
- Shatter Test starting from 0.5 kg of these briquettes by successively realizing 4 falls of 2 m. We weigh the amount of fines less than 10 mm generated at the end of these 4 falls. We get a
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Thermal Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Metallurgy (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Manufacture Of Iron (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Glanulating (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
Description
Claims
Priority Applications (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480033001.4A CN105392738B (zh) | 2013-07-15 | 2014-07-11 | 压坯形式的含有一种或多种钙镁化合物的组合物 |
CA2912499A CA2912499A1 (fr) | 2013-07-15 | 2014-07-11 | Composition comprenant un ou des composes calco-magnesiens sous forme de compacts |
EP14739799.6A EP3022154A1 (fr) | 2013-07-15 | 2014-07-11 | Composition comprenant un ou des composes calco-magnesiens sous forme de compacts |
KR1020157034846A KR101843390B1 (ko) | 2013-07-15 | 2014-07-11 | 압축물 형태의 하나 이상의 칼슘-마그네슘 화합물을 포함하는 조성물 |
MA38693A MA38693B1 (fr) | 2013-07-15 | 2014-07-11 | Composition comprenant un ou des composes calco-magnesiens sous forme de compacts |
DE212014000154.4U DE212014000154U1 (de) | 2013-07-15 | 2014-07-11 | Zusammensetzung enthaltend eine oder mehrere Calcium-Magnesium-Verbindungen in Form von Komprimaten |
MX2015016977A MX2015016977A (es) | 2013-07-15 | 2014-07-11 | Composicion que contiene uno o varios compuestos calcico-magnesicos en forma de compactos. |
US14/895,401 US20160115076A1 (en) | 2013-07-15 | 2014-07-11 | Compositions Comprising One or More Calcium-Magnesium Compounds in the Form of Compacts |
BR112015030109A BR112015030109A2 (pt) | 2013-07-15 | 2014-07-11 | composição que compreende composto(s) de cálcio e magnésio como compostos compactos |
AU2014292228A AU2014292228B2 (en) | 2013-07-15 | 2014-07-11 | Composition comprising one or more calcium-magnesium compounds in the form of compacts |
JP2016522661A JP6336057B2 (ja) | 2013-07-15 | 2014-07-11 | コンパクト化合物としてのカルシウムマグネシウム化合物を含む組成物 |
EA201592180A EA031777B1 (ru) | 2013-07-15 | 2014-07-11 | Композиция, включающая кальций-магниевое(ые) соединение(ия) в качестве компактированных соединений |
SG11201509435UA SG11201509435UA (en) | 2013-07-15 | 2014-07-11 | Composition comprising one or more calcium-magnesium compounds in the form of compacts |
UAA201512414A UA117677C2 (uk) | 2013-07-15 | 2014-11-07 | Композиція, яка включає кальцій-магнієву(і) сполуку(и) як компактовану(і) сполуку(и) |
PH12015502594A PH12015502594A1 (en) | 2013-07-15 | 2015-11-16 | Composition comprising one or more calcium-magnesium compounds in the form of compacts |
ZA2015/08558A ZA201508558B (en) | 2013-07-15 | 2015-11-19 | Composition comprising one or more calcium-magnesium compounds in the form of compacts |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE201300485 | 2013-07-15 | ||
BE2013/0485 | 2013-07-15 | ||
BE2014/0280 | 2014-04-22 | ||
BE2014/0280A BE1021261B1 (fr) | 2014-04-22 | 2014-04-22 | Composition comprenant un ou des composes calco-magnesiens sous forme de compacts |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015007661A1 true WO2015007661A1 (fr) | 2015-01-22 |
Family
ID=51210467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/064982 WO2015007661A1 (fr) | 2013-07-15 | 2014-07-11 | Composition comprenant un ou des composes calco-magnesiens sous forme de compacts |
Country Status (19)
Country | Link |
---|---|
US (1) | US20160115076A1 (fr) |
EP (1) | EP3022154A1 (fr) |
JP (1) | JP6336057B2 (fr) |
KR (1) | KR101843390B1 (fr) |
CN (1) | CN105392738B (fr) |
AU (1) | AU2014292228B2 (fr) |
BR (1) | BR112015030109A2 (fr) |
CA (1) | CA2912499A1 (fr) |
DE (1) | DE212014000154U1 (fr) |
EA (1) | EA031777B1 (fr) |
FR (1) | FR3008405A1 (fr) |
MX (1) | MX2015016977A (fr) |
MY (1) | MY179213A (fr) |
PH (1) | PH12015502594A1 (fr) |
SG (1) | SG11201509435UA (fr) |
TW (1) | TWI651267B (fr) |
UA (1) | UA117677C2 (fr) |
WO (1) | WO2015007661A1 (fr) |
ZA (1) | ZA201508558B (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1023887B1 (fr) * | 2016-07-08 | 2017-09-04 | Lhoist Recherche Et Developpement Sa | Composition sous forme de briquettes comprenant des composes calco-magnesiens vifs, son procede d'obtention et leur utilisation |
BE1023886B1 (fr) * | 2016-07-08 | 2017-09-04 | Lhoist Recherche Et Developpement Sa | Composition sous forme de tablettes comprenant des composes calco-magnesiens vifs, son procede d'obtention et leur utilisation |
BE1023884B1 (fr) * | 2016-07-08 | 2017-09-04 | Lhoist Rech Et Developpement Sa | Procédé de fabricatrion de briquettes contenant de l'oxyde de fer actif, et briquettes ainsi obtenues |
EP3242958B1 (fr) | 2015-01-09 | 2018-08-15 | S.A. Lhoist Recherche Et Developpement | Procédé de déphosphorisation de métal fondu pendant un processus de raffinage |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018099558A1 (fr) * | 2016-11-30 | 2018-06-07 | S.A. Lhoist Recherche Et Developpement | Boulettes de minerai métallique |
WO2018099559A1 (fr) * | 2016-11-30 | 2018-06-07 | S.A. Lhoist Recherche Et Developpement | Boulettes de minerai métallique |
DE102018115939A1 (de) * | 2018-07-02 | 2020-01-02 | Lhoist Recherche Et Développement S.A. | Formkörper auf Basis von Magnesiumoxid und Calciumcarbonat und Verfahren zu dessen Herstellung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB815847A (en) * | 1956-12-21 | 1959-07-01 | Foundry Services Ltd | Improvements in or relating to the production of steel and other metals |
US5186742A (en) * | 1991-11-27 | 1993-02-16 | Chemical Lime Company | Method and composition for use in recycling metal containing furnace dust |
FR2872447A1 (fr) * | 2004-07-02 | 2006-01-06 | Eurotab Sa | Dispositif de compactage de poudre pour la fabrication de pastilles |
US7105114B2 (en) * | 2004-08-10 | 2006-09-12 | Chemical Lime Company | Briquetting of lime based products with carbon based additives |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3719479A (en) * | 1971-02-12 | 1973-03-06 | Du Pont | Method of fabricating ring shapes by hot pressing |
JP3729371B2 (ja) * | 1997-05-22 | 2005-12-21 | 日新製鋼株式会社 | スラグ濃度調整用MgOブリケット |
FR2933897B1 (fr) | 2008-07-18 | 2011-05-20 | Eurotab | Dispositif pour former des tablettes par compaction a volume constant |
-
2014
- 2014-07-10 FR FR1456650A patent/FR3008405A1/fr active Pending
- 2014-07-11 SG SG11201509435UA patent/SG11201509435UA/en unknown
- 2014-07-11 MX MX2015016977A patent/MX2015016977A/es unknown
- 2014-07-11 US US14/895,401 patent/US20160115076A1/en not_active Abandoned
- 2014-07-11 WO PCT/EP2014/064982 patent/WO2015007661A1/fr active Application Filing
- 2014-07-11 EA EA201592180A patent/EA031777B1/ru not_active IP Right Cessation
- 2014-07-11 BR BR112015030109A patent/BR112015030109A2/pt not_active Application Discontinuation
- 2014-07-11 CA CA2912499A patent/CA2912499A1/fr not_active Abandoned
- 2014-07-11 AU AU2014292228A patent/AU2014292228B2/en not_active Ceased
- 2014-07-11 DE DE212014000154.4U patent/DE212014000154U1/de not_active Expired - Lifetime
- 2014-07-11 EP EP14739799.6A patent/EP3022154A1/fr not_active Withdrawn
- 2014-07-11 JP JP2016522661A patent/JP6336057B2/ja not_active Expired - Fee Related
- 2014-07-11 KR KR1020157034846A patent/KR101843390B1/ko active IP Right Grant
- 2014-07-11 MY MYPI2015704079A patent/MY179213A/en unknown
- 2014-07-11 CN CN201480033001.4A patent/CN105392738B/zh not_active Expired - Fee Related
- 2014-07-14 TW TW103124157A patent/TWI651267B/zh not_active IP Right Cessation
- 2014-11-07 UA UAA201512414A patent/UA117677C2/uk unknown
-
2015
- 2015-11-16 PH PH12015502594A patent/PH12015502594A1/en unknown
- 2015-11-19 ZA ZA2015/08558A patent/ZA201508558B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB815847A (en) * | 1956-12-21 | 1959-07-01 | Foundry Services Ltd | Improvements in or relating to the production of steel and other metals |
US5186742A (en) * | 1991-11-27 | 1993-02-16 | Chemical Lime Company | Method and composition for use in recycling metal containing furnace dust |
FR2872447A1 (fr) * | 2004-07-02 | 2006-01-06 | Eurotab Sa | Dispositif de compactage de poudre pour la fabrication de pastilles |
US7105114B2 (en) * | 2004-08-10 | 2006-09-12 | Chemical Lime Company | Briquetting of lime based products with carbon based additives |
Non-Patent Citations (5)
Title |
---|
"RENNIE DEFLATINE, INFORMATION DE L'UTILISATEUR", 1 January 2014 (2014-01-01), XP055115368, Retrieved from the Internet <URL:http://www.rennieconseils.fr/static/documents/RennieDeflatine.pdf> [retrieved on 20140425] * |
ANONYMOUS: "Dolomite as Calcium and Magnesium 240 Tablets - Carol Bond Health Foods", 28 August 2013 (2013-08-28), XP055114603, Retrieved from the Internet <URL:https://web.archive.org/web/20130828034037/http://carolbond.com/dolomite-as-calcium-and-magnesium-240-tablets/> [retrieved on 20140417] * |
I.M. MORSI ET AL.: "Silicothermic Réduction of Dolomite Ore Under Inert Atmosphere", CANADIAN METALLURGICAL QUARTERLY, vol. 41, no. 1, 1 January 2002 (2002-01-01), pages 15 - 28, XP055199243, ISSN: 0008-4433 |
See also references of EP3022154A1 |
TRENTA ET AL: "Notre offre "pastilleuses" - Eurotab - innovating together", 17 May 2013 (2013-05-17), XP055148215, Retrieved from the Internet <URL:https://web.archive.org/web/20130517085959/http://www.eurotab.eu/Notre-offre-pastilleuses.html> [retrieved on 20141022] * |
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US20190256946A1 (en) * | 2016-07-08 | 2019-08-22 | S. A. Lhoist Recherche Et Developpement | Composition in the Form of Briquettes Comprising Burnt Calcium-Magnesium Compounds, Method for Obtaining Same, and Use Thereof |
EP3356296B1 (fr) | 2016-07-08 | 2019-10-16 | S.A. Lhoist Recherche Et Developpement | Procede de fabrication de briquettes contenant un compose calco-magnesien et un compose a base de fer, et briquettes ainsi obtenues |
KR102037023B1 (ko) | 2016-07-08 | 2019-10-25 | 에스.에이. 로이스트 레셰르셰 엣 디벨로프먼트 | "퀵" 칼슘-마그네슘 화합물 및 칼슘 페라이트를 함유하는 열처리된 브리켓, 및 이의 제조방법 |
US20190337846A1 (en) * | 2016-07-08 | 2019-11-07 | S. A. Lhoist Recherche Et Developpement | Thermally treated briquettes containing a "quick" calcium-magnesium compound and calcium ferrites, and method of manufacture thereof |
US20190345066A1 (en) * | 2016-07-08 | 2019-11-14 | S. A. Lhoist Recherche Et Developpement | Method for Manufacturing Briquettes Containing a Calcium-Magnesium Compound and an Iron-Based Compound, and Briquettes Obtained Thereby |
AU2017294107B2 (en) * | 2016-07-08 | 2019-11-21 | S.A. Lhoist Recherche Et Developpement | Method for manufacturing briquettes containing a calcium-magnesium compound and an iron-based compound, and briquettes obtained thereby |
BE1023887B1 (fr) * | 2016-07-08 | 2017-09-04 | Lhoist Recherche Et Developpement Sa | Composition sous forme de briquettes comprenant des composes calco-magnesiens vifs, son procede d'obtention et leur utilisation |
US10718034B2 (en) | 2016-07-08 | 2020-07-21 | S. A. Lhoist Recherche Et Developpement | Composition in the form of briquettes comprising burnt calcium-magnesium compounds, method for obtaining same, and use thereof |
EP3481774B1 (fr) | 2016-07-08 | 2020-09-30 | S.A. Lhoist Recherche Et Developpement | Procede de fabrication de briquettes contenant un compose calco-magnesien et un compose a base de fer, et briquettes ainsi obtenues |
US10851017B2 (en) | 2016-07-08 | 2020-12-01 | S. A. Lhoist Recherche Et Developpement | Thermally treated briquettes containing a “quick” calcium-magnesium compound and calcium ferrites, and method of manufacture thereof |
BE1024908B1 (fr) * | 2016-07-08 | 2018-08-16 | S.A. Lhoist Recherche Et Developpement | Procédé de fabrication de briquettes contenant un composé calco-magnésien et un composé à base de fer, et briquettes ainsi obtenues |
AU2019284111B2 (en) * | 2016-07-08 | 2021-05-27 | S.A. Lhoist Recherche Et Developpement | Method for manufacturing briquettes containing a calcium-magnesium compound and an iron-based compound, and briquettes obtained thereby |
Also Published As
Publication number | Publication date |
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CN105392738A (zh) | 2016-03-09 |
EP3022154A1 (fr) | 2016-05-25 |
EA031777B1 (ru) | 2019-02-28 |
BR112015030109A2 (pt) | 2017-07-25 |
TWI651267B (zh) | 2019-02-21 |
DE212014000154U1 (de) | 2016-05-02 |
ZA201508558B (en) | 2017-11-29 |
FR3008405A1 (fr) | 2015-01-16 |
AU2014292228B2 (en) | 2017-03-16 |
UA117677C2 (uk) | 2018-09-10 |
KR20160013064A (ko) | 2016-02-03 |
CA2912499A1 (fr) | 2015-01-22 |
PH12015502594A1 (en) | 2016-02-29 |
KR101843390B1 (ko) | 2018-05-14 |
JP6336057B2 (ja) | 2018-06-06 |
JP2016531065A (ja) | 2016-10-06 |
AU2014292228A1 (en) | 2015-12-03 |
US20160115076A1 (en) | 2016-04-28 |
TW201522225A (zh) | 2015-06-16 |
MY179213A (en) | 2020-11-02 |
SG11201509435UA (en) | 2016-03-30 |
MX2015016977A (es) | 2016-04-25 |
EA201592180A1 (ru) | 2016-06-30 |
CN105392738B (zh) | 2018-10-02 |
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