EP1551543A1 - Compose forme de silice precipitee et de phosphate et son utilisation comme support de liquide a apport nutritionnel et comme agent antimottant a apport nutritionnel - Google Patents
Compose forme de silice precipitee et de phosphate et son utilisation comme support de liquide a apport nutritionnel et comme agent antimottant a apport nutritionnelInfo
- Publication number
- EP1551543A1 EP1551543A1 EP03758258A EP03758258A EP1551543A1 EP 1551543 A1 EP1551543 A1 EP 1551543A1 EP 03758258 A EP03758258 A EP 03758258A EP 03758258 A EP03758258 A EP 03758258A EP 1551543 A1 EP1551543 A1 EP 1551543A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- phosphate
- compound according
- compound
- weight
- liquid
- 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.)
- Withdrawn
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/048—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing phosphorus, e.g. phosphates, apatites, hydroxyapatites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28004—Sorbent size or size distribution, e.g. particle size
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28011—Other properties, e.g. density, crush strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
- B01J20/28019—Spherical, ellipsoidal or cylindrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28069—Pore volume, e.g. total pore volume, mesopore volume, micropore volume
- B01J20/28076—Pore volume, e.g. total pore volume, mesopore volume, micropore volume being more than 1.0 ml/g
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
- Y10T428/2996—Glass particles or spheres
Definitions
- the present invention relates to new compounds based on precipitated silica and phosphate, in particular calcium phosphate, which can be used as a liquid carrier, in particular as a liquid supplement for animal feed, and preferably, simultaneously, as a nutritional additive, in particular for animals. . It also relates to compositions comprising a liquid, in particular a liquid animal feed supplement, absorbed on a support formed by such a new compound based on precipitated silica and phosphate.
- the present invention also relates to the use of these compounds, preferably after grinding, as an anti-caking agent, as an aid to the liquid atomization process, to the solid grinding process or pastillage / tablettage, and preferably simultaneously, as a nutritional additive, in particular for animals.
- conditioned composition means the composition thus obtained, that is to say a liquid absorbed on a silica support.
- This conditioned composition must be able to be handled easily, which implies good fluidity and low dusting, hence good mechanical resistance and therefore good resistance to attrition of the support. It must also have a fairly high content of active material (liquid), hence a high absorption capacity for the support, as well as a fairly high density.
- the object of the invention is to provide new compounds, constituting in particular an alternative to known silica supports, and thus particularly suitable for packaging liquids, especially for packaging liquid supplements for animal feed.
- one of the objects of the invention consists of a compound (or mixed) capable of being obtained by spray-drying of a suspension, denoted S below, containing a precipitated silica and a selected phosphate among the phosphates of elements of groups la or lia of the Periodic Table of the Elements and phosphates of rare earths.
- the precipitated silica can optionally be used in its solid form as it is (dry form) or in the form of an aqueous suspension obtained by redispersion in water of the precipitated silica in solid form, the precipitated silica is very advantageous, used in the form of a filter cake or a suspension directly from its preparation process (precipitation reaction).
- the present invention also proposes for this purpose a compound (or mixed) formed of precipitated silica and at least one phosphate chosen from phosphates of elements from groups la or lia of the Periodic Table of Elements and phosphates from rare earths.
- the drying is carried out by atomization (co-ato isation), that is to say by spraying the suspension S in a hot atmosphere (“spray-drying").
- the compound (or mixed) according to the invention can be called “co-atomisat”.
- the drying is advantageously carried out by means of a nozzle atomizer, for example monofluid or at liquid pressure.
- the outlet temperature of the atomizer used is usually less than 170 ° C, in particular less than 140 ° C; it is for example between 100 and 135 ° C.
- the suspension S immediately before drying has a dry matter content of between 16 and 24% by weight, in particular between 18 and 24% by weight, for example between 18 and 22% by weight.
- the suspension S is obtained by mixing two precursors of a phosphate chosen from the phosphates of elements from groups Sa or lia of the Periodic Table of Elements and the phosphates from rare earths, with a suspension precipitated silica.
- two precursors of a phosphate is meant, on the one hand, a precursor providing the phosphate “part” proper, chosen, for example, from orthop osphoric acid H 3 P0 4 and its salts of formula NH 4 H 2 P0 4 , NaH 2 PQ 4 , KH 2 P0 4 , (NH 4 ) 2 HP0 4 , and, on the other hand, a precursor providing the “part” element of group îa or group Ha of the Periodic Table Elements or rare earth, chosen, for example, in the case of calcium, from lime Ca (OH) 2 , calcium nitrate Ca (N0 3 ) 2 and calcium chloride CaC! 2 .
- the two phosphate precursors are added, in the precipitated silica suspension, most often with stirring, each in solid form (that is to say dry form: powder in particular) or, preferably , in the form of an aqueous solution (which includes the case where one is added in solid form and the other in the form of a solution), under conditions such as said phosphate, chosen from the phosphates of elements groups la or Ha of the Periodic Table of the Elements and the rare earth phosphates, is formed.
- the two precursors of said phosphate can be added simultaneously to the suspension of precipitated silica; preferably, they are added successively, the precursor providing the phosphate “part” proper being added first.
- the mixture obtained may possibly undergo a disintegration operation, which in particular makes it possible to lower the viscosity of the suspension to be dried later if necessary.
- the disintegration operation can in particular be carried out by passing the mixture through a grinder, in particular of the colloidal or ball type, or, preferably, in a high shear agitator, for example in the presence of water, it should be noted that the disintegration operation can be confused with the mixing operation.
- the mixing and any disintegration are generally carried out at a temperature between 15 and 70 ° C, for example between 20 and 50 ° C.
- the suspension of precipitated silica used initially can be directly resulting from the process of preparation of precipitated silica or obtained by disintegration of the filter cake resulting from this preparation process (precipitation reaction).
- This precipitated silica suspension generally has a dry matter content of between 16 and 24% by weight, in particular between 18 and 24% by weight, for example between 18 and 22% by weight.
- i S suspension is obtained by mixing, usually under stirring, firstly, thirst of a precipitated silica constituted by a filter cake resulting 'from the precipitation reaction of the silica, either of a suspension of precipitated silica, preferably obtained by disintegration of a filter cake resulting from the precipitation reaction of this silica, with, on the other hand, a phosphate chosen from the phosphates of elements from the groups la or Ha of the Periodic Table of the Elements and the rare earth phosphates.
- the disintegration operation the filter cake possible in particular to lower its viscosity and can in particular be carried out by passing the - réelle in a high shear agitator or in a mill, in particular colloidal or type beads, for example in the presence of water, and preferably in the presence of an aluminum compound, in particular sodium aluminate.
- the mixture obtained on the one hand, either of the precipitated silica constituted by the filter cake, or of the suspension of precipitated silica, and, on the other hand, of the phosphate, can optionally undergo a disintegration operation, allowing in particular to lower its viscosity if necessary.
- the disintegration operation can in particular be carried out by passing the mixture through a grinder, in particular of the colloidal or ball type, or, preferably, in a high shear agitator, for example in the presence of water. It should be noted that the disintegration operation can be confused with the mixing operation.
- a disintegration operation is generally carried out.
- the mixing and any disintegration are generally carried out at a temperature between 15 and 70 ° C, for example between 20 and 50 ° C.
- the phosphate can be used here in the form of an aqueous suspension or in solid form (for example, granules or preferably powder), water being optionally also added to the suspension of precipitated silica, generally with stirring.
- the possible suspension of precipitated silica used initially has, in general, a dry matter content of between 16 and 24% by weight, in particular between 18 and 24% by weight, for example between 18 and 22% by weight. weight.
- the suspension S can optionally be obtained by mixing, on the one hand, precipitated silica in solid form, with, on the other hand, a solution of a phosphate chosen from the phosphates of elements from groups la or lia of the Classification
- the precipitated silica in particular in the form of a suspension or a filter cake, used according to the invention, is preferably prepared by a process of the type comprising the reaction of a silicate; with an acidifying agent, then a possible separation operation (liquid-solid separation), the precipitation of the silica being carried out as follows:
- an initial base stock comprising at least part of the total amount of silicate involved in the reaction and, in general, at least one electrolyte, the concentration of silicate (expressed as Si0 2 ) in said base stock initial being less than 100 g / l, - in particular 90 g / l, and the ' electrolyte concentration (sodium sulphate for example) in said initial base stock being less than 17 g / l, for example less than 14 g / l (2) the acidifying agent is added to said base stock until a pH value of the reaction medium is obtained of at least about 7, generally between about 7 and 8,
- the process concerned is a process for the synthesis of precipitation silica, that is to say that an acidifying agent is made to act on a silicate .
- acidifying agent a strong mineral acid such as sulfuric acid, nitric acid or hydrochloric acid, or an organic acid such as acetic acid, formic acid or carbonic acid.
- the acidifying agent can be diluted or concentrated; its normality can be between 0.4 and 36 N, for example between 0.6 and 1.5 N.
- the acidifying agent is sulfuric acid
- its concentration can be between 40 and 180 g / l, for example between 60 and 130 g / l.
- silicate any common form of silicate such as metasilicate, disilicate and advantageously an alkali metal silicate, in particular sodium or potassium silicate.
- the silicate may have a concentration (expressed as Si0 2 ) of between 40 and 330 g / l, for example between 60 and 300 g / l, in particular between 60 and 260 g / l.
- concentration expressed as Si0 2
- sulfuric acid is used as the acidifying agent
- sodium silicate as the silicate.
- sodium silicate In the case where sodium silicate is used, it generally has a SiO 2 / Na 2 0 weight ratio between 2 and 4, for example between 3.0 and 3.8.
- the initial base stock generally comprises an electrolyte.
- electrolyte is understood here in its normal acceptance, that is to say that it signifies any ionic or molecular substance which, when it is in solution " , “ decomposes or dissociates to form ions or charged particles.
- electrolyte of a salt from the group of alkali and alkaline earth metal salts, in particular the salt of the starting silicate metal and of the acidifying agent, for example sodium chloride in the case of the reaction of a sodium silicate with hydrochloric acid or, preferably, sodium sulfate in the case of the reaction of a sodium silicate with sulfuric acid.
- step (3) a simultaneous addition of acidifying agent is carried out. and the remaining amount of silicate.
- This simultaneous addition is preferably carried out in such a way that the pH value is constantly equal (to within ⁇ 0.2) to that reached at the end of step (2).
- an additional quantity of acidifying agent is added to the reaction medium, preferably until a pH value of the reaction medium of between 3 and 6.5 is obtained, in particular between 4 and 6.5.
- I! may then be advantageous to carry out, after this addition of an additional quantity of acidifying agent, a maturing of the reaction medium, this maturing being able for example to last from 2 to 60 minutes, in particular from 3 to 20 minutes.
- step (3) an acidifying agent is added, preferably until d 'A pH value of the reaction medium between 3 and 6.5, in particular between 4 and 6.5. It may also then be advantageous to carry out, after this step (3), a maturing of the reaction medium, this maturing being able for example to last from 2 to 60 minutes, in particular from 3 to 20 minutes.
- the reaction vessel in which the entire reaction of the silicate with the acidifying agent is carried out is usually provided with suitable stirring equipment and heating equipment.
- the whole reaction of the silicate with the acidifying agent is generally carried out between 70 and 98 ° C.
- the entire reaction of the silicate with the acidifying agent is carried out at a constant temperature, preferably between 80 and 95 ° C.
- the temperature at the end of the reaction is higher than the temperature at the start of the reaction: thus, the temperature at the start of the reaction is maintained preferably between 70 and 95 ° C., then it is increased the temperature, preferably up to a value between 80 and 98 ° C, value at which it is maintained until the end of the reaction.
- a slurry / suspension of silica which can then undergo a solid-liquid separation operation.
- said separation comprises filtration and washing using a filter equipped with a compacting means.
- This filter can be a belt filter equipped with a roller ensuring compaction.
- this filter is preferably a press filter; separation then generally comprises a filtration, a washing and then a compacting by means of said filter.
- the phosphate used in the context of the invention is chosen from phosphates of elements from groups la or Ha of the Periodic Table of Elements and rare earth phosphates.
- said phosphate is a calcium phosphate, in particular a mono-calcium phosphate (MCP), also called calcium dihydrogen phosphate, of formula Ca (H 2 P0 4 ) 2 , a di-calcium phosphate (DCP), called also calcium hydrogen phosphate, of formula CaHPO 4 , or a tri-calcium phosphate (TCP), also called hydroxyapatite; very preferably, a mono-calcium phosphate (MCP) or a di-calcium phosphate (DCP) is used.
- MCP mono-calcium phosphate
- DCP di-calcium phosphate
- TCP tri-calcium phosphate
- the phosphates used generally have a median particle size d 50 of less than 100 ⁇ m, in particular less than 50 ⁇ , in particular less than 25 ⁇ m.
- the compounds according to the invention can optionally be subjected to a thermal post-treatment.
- the filling density in the packed state (DRT) and the filling density in the non-packed state (DNT) are determined according to standard NF T 30-042.
- DOP oil uptake is measured according to standard NF T 30-022 (March 1953) using dioctylphthalate.
- the pore volumes given are measured by mercury porosimetry; the preparation of each sample can be done as follows: each sample is dried beforehand for 2 hours in an oven at 200 ° C., then placed in a test container within 5 minutes after it leaves the oven and degassed under vacuum, by example using a pump with rotary drawers; the pore diameters (MICROMERITICS Autopore III 9420 porosimeter) are calculated by the relation of WASHBURN with a theta contact angle equal to 140 ° - and a gamma surface tension equal to 484 Dynes / cm (o ' u N / m). - The BET specific surface is determined according to the method of
- CTAB specific surface is the external surface determined according to. standard NF T 45007 (November 1987) (5.12).
- the attrition resistance of the compounds according to the invention is determined as follows: it is expressed as a percentage of particles, in a 100 ⁇ - 200 ⁇ m section obtained by sieving, remaining after attrition for 2 minutes (resistance to attrition noted R at2 ), for 5 minutes (attrition resistance noted R at5 ) and for 10 minutes (attrition resistance noted R at ⁇ 0 ), on a vibrating sieve of 50 ⁇ m, in the presence of 50 beads glass with a diameter of 4 mm, the initial mass of sample particles initially placed on the vibrating screen being 1 gram.
- the vibration of the sieve is ensured by a vibrating table of the RETSCH VE 1000 type used at 2 mm amplitude.
- the median diameter d 50 (in mass) is determined using a MALVERN Mastersizer 2000 granulometer and its Hydro 2000G suspension sampler.
- the compounds (or mixed) according to the invention generally have a phosphate content, chosen from, phosphates of elements from groups la or Ha of the Periodic Table of Elements and rare earth phosphates, of at least 10% by weight, preferably at least 20% by 'weight (dry).
- their phosphate content is between 20 and 60% by weight, in particular between 20 and 50% by weight. It can in particular vary between 20 and 40% by weight, for example between 20 and 35% by weight.
- the compounds according to the invention are advantageously in a particular form, in this case in the form of substantially spherical beads, the median diameter d 50 of which is generally at least 80 ⁇ m, preferably at least minus 100 ⁇ m; this diameter is for example between 100 and 400 ⁇ , in particular between 110 and 300 ⁇ m, in particular between 130 and 280 ⁇ .
- These beads generally have a sphericity factor (defined as indicated in application WO 98/35751, the value 1 corresponding to a perfect sphere) of at least 0.900, in particular at least 0.920, for example at least 0.940 .
- Their sphericity factor can be at least 0.960.
- these balls are full (that is to say not hollow) and not dusty, that is to say do not generate little or no dust, especially when handling it.
- the compounds according to the invention advantageously have, on the one hand, good mechanical strength / cohesion, in particular good resistance to attrition, which gives them their non-dusty nature, in particular during their handling, and , on the other hand, a porosity giving them a high absorption power.
- DOP oil intake is usually greater than 170 ml / 100g, in particular greater than 210 ml / 100g. It can be at least 230 ml / 100g, for example at least 240 ml / 100g.
- the compounds according to the invention advantageously have a DOP oil uptake greater than the DOP oil uptake of the composition obtained by dry mixing of said precipitated silica in solid form and of said phosphate in solid form.
- V d1 Their pore volume (V d1 ) constituted by the pores with a diameter of less than 1 ⁇ m can be at least 1, 2 c ⁇ m 3 / g, in particular at least 1, 3 çm 3 / g, in particular at least 1.4 cm 3 / g; it can for example be at least 1.5 cm 3 / g. It is generally less than 2.2 cm 3 / g, for example 1.8 cm 3 / g.
- the compounds according to the invention have a fairly high density, in particular greater than that of the precipitated silica which they contain; their filling density in the packed state (DRT) is preferably greater than
- 0.29 in particular equal to at least 0.30. It can be at least 0.31, for example at least 0.33.
- Their BET specific surface area is generally between 60 and 250 m 2 / g, in particular between 90 and 200 m 2 / g, for example between 100 and 160 m 2 / g.
- the compounds (or mixed) defined above advantageously exhibit a high absorption capacity, improved fluidity and good strength / mechanical cohesion, in particular a good resistance to attrition, hence a non-dusty nature, especially during handling, and was particularly suitable for packaging liquids.
- organic liquids such as organic acids, surfactants, for example of the anionic or nonionic type, organic additives for rubber / polymers, pesticides.
- liquid additives are used here especially such as: preserving agents (phosphoric acid, propionic acid in particular), flavorings, colorings, liquid food supplements. .
- the compounds described above are particularly suitable for packaging liquid feed supplements, in particular liquid feed supplements.
- An essential advantage of the present invention lies in the fact that in addition to their use as an additive liquid carrier, in particular of additional feed fluid,.
- Compounds according to the invention have a nutritional, even therapeutic, value and can be used simultaneously as a nutritional additive, and even therapeutic, for animals, thus promoting the control of the growth and health of animals, in particular farm animals.
- the present invention makes it possible to combine in a single product a nutritional additive, or even a therapeutic additive, such as for example calcium phosphate, with a liquid additive, in particular a liquid feed supplement, in particular animal feed, such as for example vitamin E (or its acetate).
- a nutritional additive or even a therapeutic additive, such as for example calcium phosphate
- a liquid additive in particular a liquid feed supplement, in particular animal feed, such as for example vitamin E (or its acetate).
- the operation of absorbing the liquid on the support formed by the compound according to the invention can be carried out in a conventional manner, in particular by spraying the liquid on the support in a mixer.
- the conditioned composition in accordance with the invention may have, in particular in the case of vitamin E (or its actetate), a liquid content of at least 50% by weight, in particular between 50 and 70%, by example between 50 and 65%, by weight; the liquid content can be at least 52% by weight.
- This high liquid content illustrates the high absorption power that the compounds according to the invention preferentially exhibit. Even higher liquid contents can be used, in particular in the case of choline hydrochloride.
- the compounds according to the invention can allow quicker and / or easier salting out of the liquid, in particular vitamin E (or its acetate), in its environment of use, for example the body of the animal.
- the packaged compositions according to the invention due to the presence of the compound described above, preferably have very little or no dust and very good fluidity (flowability), combined with a rather high density.
- the present invention also relates to the use of the compounds according to the invention as anti-caking agent; of. preferably, said compounds are ground prior to this use, for example up to a particle size of between 1 and 100 ⁇ m, in particular between 2 and 50 ⁇ m.
- They can be used as an anti-caking agent in human food, for example fish, cheeses, sugar, polydextrose, flavorings, dried fruits, coffee powder, tea, cocoa, in animal food, for example for example formulations, rations, and also in agriculture, detergency, pharmacy, cosmetics and various industrial applications (such as rubber / polymers, toner, fire extinguisher powder, concrete, latex powder).
- It also relates to their use as an aid to the liquid atomization process, to the solid grinding process, and, in particular in detergency and pharmacy, as a pellet and / or tableting aid; preferably, said compounds are ground prior to these uses, for example up to a particle size of between 1 and 100 ⁇ m, in particular between 2 and 50 ⁇ m.
- liquid atomization aid agent As a liquid atomization aid agent, it can make it possible, added to the liquid which is going to be spray-dried, to avoid sticking at the level of the walls of the atomizer and also to obtain a non-final powder. cloded and with good flowability (possible application: milk fattening area).
- a powder grinding aid agent it can make it possible, when added to a powder at the level of the grinder, to grind said powder better and also to obtain a final non-clodged powder having good flowability (possible application: field of polymers).
- the compounds according to the invention has as an important advantage of having nutritional value and of being usable simultaneously as a nutritional additive, in particular for animals.
- aqueous sodium silicate ⁇ having a weight ratio Si0 2 / Na 2 0 equal to 3.5 and a density at 20 ° ⁇ equal to 1.133.
- the silicate concentration expressed as Si0 2 in the initial base stock is
- the mixture is then brought to a temperature of 82 ° C. while keeping it under agitation. 387 liters of dilute sulfuric acid are then introduced into it, with a density at 20 ° C. equal to 1.050, until a pH value (measured at its temperature) equal to 8.0 is obtained in the reaction medium.
- the reaction temperature is 82 ° C for the first 25 minutes; it is then worn
- the diluted acid is continued to be introduced for 9 minutes so as to bring the pH of the reaction medium to. a value equal to 5.2. After this introduction of acid, the reaction slurry obtained is maintained for 5
- the total duration of the reaction is 118 minutes.
- a precipitated silica slurry or suspension is thus obtained which is then filtered and washed using a filter press with vertical plates (said plates being equipped with a deformable membrane making it possible to compress the filter cake by introduction of air under pressure. ), at a pressure of 4.5 - bars and for the time necessary to obtain a silica cake, the loss on ignition of which is equal to 80% (therefore a dry matter content of 19.5% by weight) .
- the cake obtained is then fluidized by mechanical and chemical action (addition of a quantity of sodium aluminate corresponding to a weight ratio Al / Si0 2 of 3000 ppm); during this operation, water is added so as to obtain a slurry having a loss on ignition equal to 81.0% (therefore a dry matter content of 19.0% by weight). After this disintegration operation, the resulting suspension. R, with a pH of 6.4, is dried using a monofluid nozzle atomizer.
- V d1 pore volume (V d1 ) constituted by the pores of d ⁇ 1 ⁇ m 2.0 cm 3 / g
- Vitamin E acetate is put on the support formed by the silica prepared in 1).
- Vitamin E acetate is placed on a support in a Patterson Kelley 7 liter V-shaped mixer rotating at 20 revolutions / min, with an axis
- the then obtained conditioner composition contains 45% by weight precipitated silica and 55% by weight of acetate 'vitamin E and has the following additional features: 14
- the compound obtained, formed from precipitated silica and calcium phosphate. is in the form of substantially spherical balls and has the following characteristics:
- V d1 '- pore volume (V d1 ) constituted by the pores of d ⁇ 1 ⁇ m 1.7 cm / g
- This compound according to the invention is therefore denser than the precipitated silica obtained in Example 1. it also has improved fluidity (Indicator of Carr lower) and better resistance to attrition, while having nutritional properties.
- Vitamin E acetate is put on the support formed by the compound (mixed silica-phosphate) prepared in 1).
- the Vitamin E acetate is placed on a support in a Patterson Kelley brand 7 liter V-shaped mixer rotating at 20 rpm, with an internal axis rotating at 1900 rpm, provided with plates through which is sprayed with vitamin E acetate and on which lump knives are attached.
- this composition conditioned on the basis of a mixed silica-phosphate support, in the form of substantially spherical beads, has good fluidity, which is . illustrated by a low Carr Index, this fluidity even being improved compared to that of the conditioned composition prepared in Example 1. Its density is also higher.
- the compound obtained, formed from precipitated silica and calcium phosphate, is in the form of substantially spherical beads and has the following characteristics:
- the compound of the invention is more dense 'that the precipitated silica obtained in Example 1.
- H has more improved flowability (low Carr index) and improved attrition resistance, while having properties nutrtionnelles.
- Vitamin E acetate is put on the support formed by the compound (mixed silica-phosphate) prepared in 1).
- the Vitamin E acetate is placed on a support in a Patterson Kelley brand 7 liter V-shaped mixer rotating at 20 rpm, with an internal axis rotating at 1900 rpm, provided with plates through which is sprayed with vitamin E acetate and on which lump knives are attached.
- the compound obtained, formed from precipitated silica and calcium phosphate, is in the form of substantially spherical beads and has the following characteristics:
- V d1 pore volume (V d1 ) constituted by the pores of d ⁇ 1 ⁇ m 1.5 cm / g.
- This compound according to the invention is therefore denser than the precipitated silica obtained in Example 1. It also has a very improved fluidity (much lower Carr Index) while retaining a satisfactory attrition resistance, and all with nutritional properties.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fodder In General (AREA)
- Cosmetics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0210836A FR2843894B1 (fr) | 2002-08-30 | 2002-08-30 | Compose forme de silice precipitee et de phosphate et son utilisation comme support de liquide a apport nutritionnel et comme agent antimottant a apport nutritionnel |
FR0210836 | 2002-08-30 | ||
PCT/FR2003/002560 WO2004022216A1 (fr) | 2002-08-30 | 2003-08-21 | Compose forme de silice precipitee et de phosphate et son utilisation comme support de liquide a apport nutritionnel et comme agent antimottant a apport nutritionnel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1551543A1 true EP1551543A1 (fr) | 2005-07-13 |
Family
ID=31503040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03758258A Withdrawn EP1551543A1 (fr) | 2002-08-30 | 2003-08-21 | Compose forme de silice precipitee et de phosphate et son utilisation comme support de liquide a apport nutritionnel et comme agent antimottant a apport nutritionnel |
Country Status (9)
Country | Link |
---|---|
US (2) | US20060147546A1 (fr) |
EP (1) | EP1551543A1 (fr) |
JP (1) | JP3993872B2 (fr) |
CN (1) | CN100339155C (fr) |
AU (1) | AU2003274271A1 (fr) |
BR (1) | BR0313856A (fr) |
FR (1) | FR2843894B1 (fr) |
TW (1) | TWI286465B (fr) |
WO (1) | WO2004022216A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2861261B1 (fr) * | 2003-10-22 | 2007-11-16 | Adisseo France Sas | Procede zootechnique pour l'administation d'un derive de vitamine e et formulation |
US8409822B2 (en) | 2009-10-05 | 2013-04-02 | Dairy Manufactuerers, Inc. | Composition of porous silica granules for delivering microorganisms |
TW201141387A (en) * | 2010-01-15 | 2011-12-01 | Mosaic Co | Granulated monocalcium phosphate product containing abrasivity and lubricity additives |
US8834945B2 (en) | 2010-01-15 | 2014-09-16 | Mos Holdings Inc. | Granulated phosphate product containing abrasivity and lubricity additives |
MX2013003808A (es) | 2010-10-05 | 2013-06-24 | Dairy Manufacturers Inc | Combinación y método para entrega de sustancias en un modo seco teniendo una capa superficial. |
CA2830086C (fr) | 2011-04-04 | 2020-06-23 | Dairy Manufacturers, Inc. | Composition et procede pour la livraison de cellules vivantes sous forme seche ayant une couche de surface |
US9073041B2 (en) * | 2011-11-04 | 2015-07-07 | Ppg Industries Ohio, Inc. | Precipitated silica sorbents and method of separating materials from a fluid stream |
FR2988386B1 (fr) | 2012-03-22 | 2014-05-09 | Rhodia Operations | Procede de preparation de silice precipitee comprenant une etape de delitage a chaud |
AU2014249014A1 (en) | 2013-03-11 | 2015-10-01 | The Mosaic Company | Granulated feed phosphate compsition including feed enzymes |
CN110290710B (zh) * | 2017-02-14 | 2023-12-19 | 帝斯曼知识产权资产管理有限公司 | 水分散性制剂 |
EP3589605A4 (fr) | 2017-02-28 | 2020-12-23 | Drylet, LLC | Systèmes, procédés et appareil pour augmenter la qualité d'effluent et de biosolides d'eaux usées |
CN109480097B (zh) * | 2019-01-03 | 2022-02-01 | 山东联科科技股份有限公司 | 一种酸化剂载体用二氧化硅微球的制备方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE664081A (fr) * | 1964-05-20 | 1965-09-16 | ||
US3725556A (en) * | 1970-11-12 | 1973-04-03 | D Hanssen | Method of manufacturing rapidly disintegrating pharmaceutical tablets |
US4486435A (en) * | 1983-05-16 | 1984-12-04 | Basf Wyandotte Corporation | Spray-dried vitamin powders using hydrophobic silica |
FR2631620B1 (fr) * | 1988-05-19 | 1990-07-27 | Rhone Poulenc Chimie | Nouvelle silice precipitee absorbante et composition a base de cette s ilice |
FR2649089B1 (fr) * | 1989-07-03 | 1991-12-13 | Rhone Poulenc Chimie | Silice a porosite controlee et son procede d'obtention |
US5236920A (en) * | 1990-04-30 | 1993-08-17 | Basf Corporation | Granulated riboflavin product having high flowability, high riboflavin content |
FR2671068B1 (fr) * | 1990-12-28 | 1993-04-23 | Rhone Poulenc Chimie | Nouvelles silices, leur procede de preparation et leur utilisation comme charges notamment pour papiers. |
DE4100920A1 (de) * | 1991-01-15 | 1992-07-16 | Degussa | Wirkstoffzubereitung zur oralen verabreichung an wiederkaeuer |
DE69528450T2 (de) * | 1994-02-18 | 2003-01-23 | Solidose L L C | Impfung von tieren mit getrockneten pelletierten biologischen materialien |
FR2758826B1 (fr) * | 1997-01-27 | 1999-04-16 | Rhodia Chimie Sa | Nouveau pigment de dioxide de titane, son procede de preparation et son utilisation dans les compositions de peinture |
US5872176A (en) * | 1997-07-11 | 1999-02-16 | Bridgestone Corporation | Addition of salts to improve the interaction of silica with rubber |
FR2767071B1 (fr) * | 1997-08-06 | 1999-09-10 | Rhodia Chimie Sa | Composition comprenant un liquide absorbe sur un support a base de silice precipitee |
US20010051176A1 (en) * | 1997-08-06 | 2001-12-13 | Jean-Francois Viot | Composition comprising a liquid absorbed on a support based on precipitated silica |
US7153521B2 (en) * | 1998-03-30 | 2006-12-26 | Rhodia Chimie | Composition comprising a liquid absorbed on a support based on precipitated silica |
DE10048616A1 (de) * | 2000-09-30 | 2002-04-11 | Degussa | Dotierte Fällungskieselsäure |
DE10058616A1 (de) * | 2000-11-25 | 2002-05-29 | Degussa | Fällungskieselsäuren mit hoher Struktur |
DE10062449A1 (de) * | 2000-12-14 | 2002-06-20 | Degussa | Dotierte Fällungskieselsäure |
-
2002
- 2002-08-30 FR FR0210836A patent/FR2843894B1/fr not_active Expired - Fee Related
-
2003
- 2003-08-13 TW TW092122256A patent/TWI286465B/zh not_active IP Right Cessation
- 2003-08-21 WO PCT/FR2003/002560 patent/WO2004022216A1/fr active Application Filing
- 2003-08-21 US US10/525,107 patent/US20060147546A1/en not_active Abandoned
- 2003-08-21 AU AU2003274271A patent/AU2003274271A1/en not_active Abandoned
- 2003-08-21 JP JP2004533555A patent/JP3993872B2/ja not_active Expired - Fee Related
- 2003-08-21 EP EP03758258A patent/EP1551543A1/fr not_active Withdrawn
- 2003-08-21 CN CNB03823131XA patent/CN100339155C/zh not_active Expired - Fee Related
- 2003-08-21 BR BR0313856-9A patent/BR0313856A/pt not_active Application Discontinuation
-
2009
- 2009-10-16 US US12/580,947 patent/US20100055265A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2004022216A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004022216A1 (fr) | 2004-03-18 |
JP3993872B2 (ja) | 2007-10-17 |
JP2005537020A (ja) | 2005-12-08 |
AU2003274271A1 (en) | 2004-03-29 |
FR2843894B1 (fr) | 2004-11-12 |
FR2843894A1 (fr) | 2004-03-05 |
TWI286465B (en) | 2007-09-11 |
US20060147546A1 (en) | 2006-07-06 |
US20100055265A1 (en) | 2010-03-04 |
BR0313856A (pt) | 2005-07-05 |
CN100339155C (zh) | 2007-09-26 |
CN1684757A (zh) | 2005-10-19 |
TW200408353A (en) | 2004-06-01 |
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