SIPERNAT® SPECIALTY SILICA · Vitamin E acetate as an oil and as an absorbate on SIPERNAT® 2200 Figure 2 ... Specialty Silica as Flow Aid, Anticaking Agent and Car-rier Substance

SIPERNAT® SPECIALTY SILICA in the animal feed industry

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Handling is becoming an increasingly important issue for feed additive processors, whose customers prefer products that can be dispensed with precision and certainty in automated processes. The most suitable options here are freely fl owing powders or microgranular products that do not cake or form dust. Achieving these characteristics means having to convert liquid substances or pastes into free-fl owing powders. It also means maintaining fl owability for powdered substances and preventing them from caking. Evonik has developed special SIPERNAT® grades for both applications.

The advantages for you and your customers:

■ Dust-free concentrates ■ Freely fl owing powders ■ Protection against clumping ■ Can be dispensed with precision ■ Consistent quality ■ Saves money

WHAT CAN SIPERNAT®SPECIALTY SILICA DO FOR YOU?

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Many of the additives used in animal feeds, such as vitamins, organic acids, choline chloride solution, pigment disper-sions, and antioxidants, are liquids and have to be blended into a powdered or granulated feed premix in subsequent processing steps. As an absorbates manufacturer, you deposit these liquids onto carriers so that the valuable additives can be dispersed homogeneously. Your customers want a free-fl owing powder or granulate that they can blend with other dry substances in any given proportion.

SIPERNAT® specialty silica has long proven to be an out-standing carrier in these types of applications. A highly absorbent, freely fl owing, chemically inert, physiologically harmless material, SIPERNAT® specialty silica yields a fi ni-shed absorbate consisting of 50 – 70 % active agent, whose particle shape and handling properties are determined by the carrier silica. Evonik has developed its SIPERNAT® 2200 grade silica specifi cally for producing dust-free absorbates.

SIPERNAT® specialty silica helps you as an absorbates manufacturer to convert liquid or paste feed additives into free-flowing powders

Figure 3

Flowability

Low dustAbsorption capacity

SIPERNAT® 22 SIPERNAT® 2200 SIPERNAT® 50

Product profiles of various Product profiles of various SIPERNAT® grades used as carrier silicassilicas

Figure 1

Vitamin E acetate as an oil and as an absorbate on SIPERNAT® 2200

Figure 2

SEM image of vitamin E acetate on SIPERNAT® 2200

200 µm

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As a premix manufacturer, you want to provide your customers with a freely fl owing powder or granulate that does not tend to form lumps – even when in storage. Mineral premixes, vitamin premixes, and other powdered feed additives, however, do not fl ow well enough on their own. The addition of 0.5 – 2 % of a hydrophilic or 0.1 – 0.5 % of a hydrophobic SIPERNAT® product signifi -cantly improves fl owability and reduces the tendency to cake. This allows users to dispense these valuable feed additives evenly, makes processing easier, and prevents costly downtime.

Figure 4 shows the eff ect of hydrophilic SIPERNAT® 22 S with copper sulfate, which is o� en used in mineral premixes.

As a premix manufacturer, SIPERNAT® specialty silica keeps your premixes free-flowing and protects them from caking

Diagramm 2: Improving threonine flowability

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5

4

3

2

1

01.0%

AEROSIL® 200 F

1.0%SIPERNAT®

22 S

1.0%SIPERNAT®

D 17

WITHOUTSILICA

Flowability

Poor

Good

Diagramm 1: Reducing the tendency of lysine to cake

3000

2500

2000

1500

1000

500

0WITHOUT

SILICA

Strengh of caking

0.1%AEROSIL®

200 FSIPERNAT®

D 17SIPERNAT®

22 SSIPERNAT®

50 S

0.25% 0.05% 0.25% 0.25% 1.0% 0.25% 1.0%

Figure 4

Copper sulfate without and with the addition of SIPERNAT® specialty silica

Diagram 1 shows how the tendency of lysine to cake can be improved by adding small amounts of various silica grades. SIPERNAT® D 17 is particularly effi cient, as the hydrophobic nature of the silica inhibits further water uptake. Even concentrations of just 0.05 – 0.25 % are enough to make a signifi cant diff erence, considerably improving the long-term stability of amino acids, espe-cially during shipment or storage. The use of hydrophilic

SIPERNAT® 22 S and SIPERNAT® 50 S, or of AEROSIL® 200 F, a fumed silica, yield excellent results as well, although this requires somewhat higher concentrations of additive (0.1 – 1.0 %).

Along with reducing the tendency to cake, addition of SIPERNAT® specialty silica and AEROSIL® fumed silica also improves fl owability, as is the case for threonine (shown in diagram 2).


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The following table summarizes a few of the most impor-tant applications and the corresponding SIPERNAT® grade recommendations.

The recommendations are based on typical representa-tives of these application examples.

In individual cases, products may behave slightly dif-ferent. We will be happy to respond to any additional questions you may have. We will help you select the right silica for your application and will be happy to advise you on questions on how to incorporate and handle the products.

Recommended products

Table 1

SIPERNAT SIPERNAT SIPERNAT SIPERNAT SIPERNAT SIPERNATYOUR APPLICATION 2200 22 22 S 50 50 S D 17CARRIER

Vitamin E-acetate ++ +

Choline chloride (carrier silica) + ++

Organic acids ++ + +

Antioxidants ++ ++

Highly concentrated active absorbates ++

Pigment pastes (e. g. Marigold) ++ +

FLOW AGENTS

Powder-like vitamins/ premixes ++ ++ ++

Feed salts/mineral premixes ++ ++ ++

Choline chloride (flow improvement) ++

Feed urea ++ ++

Milk replacerMilk replacer ++ +

Table 2

SIPERNAT SIPERNAT SIPERNAT SIPERNAT SIPERNAT SIPERNATUNIT 2200 22 22 S 50 50 S D 17

BEHAVIOUR VS. WATER HYDROPHILIC HYDROPHOBIC

Specific surface area BET Multipoint m2 / g 190 190 190 500 500 n. a.

Particle size d50 laser diffraction µm 320 120 13,5 50 18 10

Tamped density not sieved g /L 250 260 90 175 105 150

Loss on drying2 h at 105 °C % ≤ 7 ≤ 7 ≤ 7 ≤ 7 ≤ 7 ≤ 6

DAO* absorptionbased on original substancebased on original substance mL / 100 g 225 235 240 295 280 n. a.

Typical applications and recommended products

*DAO = Dioctyladipate Selected physico-chemical properties of specific SIPERNAT®-grades. The values depicted here serve as guides only and do not reflect actual specifications

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Evonik Resource Efficiency GmbH – Your global partner

Packaging and handlingStandard packaging for SIPERNAT® products is a multilayer paper bag, with each bag containing between 10 and 25 kg, depending on the product and application. Certain silica prod-ucts are also available in semi-bulk packaging known as FIBCs (fl exible intermediate bulk containers). FIBCs can be emptied without creating dust, require fewer labor utilization (compared to paper bags), and eliminate potential contamination risks because they are closed. Synthetic silicas can still be shipped as loose bulk materials as a cost-eff ective alternative.

Additional information on packaging types is available from Technical Information sheets 1232 (“Packaging Types for Performance Silica”) or 1321 (“Semi-Bulk Packaging for Finely Dispersed SIPERNAT® Products”). Customers can easily handle these products without creating dust, and process (i. e., convey, measure out, blend, etc.) them within solid or liquid systems. More detailed information on handling synthetic silicas is avail-able in our Technical Bulletin Issue 28 (“Handling Synthetic Silicas and Silcates”).

Handling, packaging, and storage

Figure 5

High-bay warehouse

•Shanghai

•Antwerp•Bonn

••Hanau

•••Wesseling•Zubillaga-Lantaron

•Ako

•••Taoyuan

•Leverkusen

•Roussillon•••Rheinfelden

•••Yokkaichi

•Mumbai

•Nanping

••MapTa Phut

•Gajraula•Piscataway•Waterford

•Adapazari

•Midrand

•Mobile•Chester

•Americana

Key:

•Production precipitated silica •Production fumed silica• Innovation/R&D

•Applied technology


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■ Specialty Silica as Flow Aid, Anticaking Agent and Car-rier Substance - Recommended Mixing Procedures for Powders and Granulates, Technical Information 1213. Evonik Resource Effi ciency GmbH, D-63457 Hanau, Germany

■ SIPERNAT® specialty silica and AEROSIL® fumed silica as fl ow aid and anticaking agent, Technical Information 1351, Evonik Resource Effi ciency GmbH, D-63457 Hanau, Germany.

Other Evonik publications on this topic

Regulatory approval for animal feed

SIPERNAT® synthetic amorphous silicas meet quality requirements for E 551a fl ow aids (“Silicas, precipitated and dried”).

E 551a is listed in the “European Union Register of Feed Additives pursuant to Regulation (EC) No. 1831/2003.” All of the products identifi ed in this brochure are in com-pliance with the HACCP and FAMI-QS manufacturing principles described in EC Regulation No. 183/2005.

Furthermore, these products are also in compliance with the conditions stipulated under 21 CFR (US Code of Federal Regulations) Section 573.940.

We are happy to provide Kosher and Halal certifi cates upon request.

StorageSIPERNAT® products are largely chemically inert and their composition does not change, even over long peri-odes of time. However the relative large surface area of these products can lead them to adsorb volatile sub-stances. In the case of moisture, this adsorption process is reversible. For this reason we recommend storing all SIPERNAT® products in a dry location where they are protected from moisture or other organic vapors. For more detailed information on the stability of synthetic

silicas, please request the corresponding product infor-mation. SIPERNAT® products stored over long periods of time may exhibit signs of modest compression. This can elevate their tamped density slightly and result in changes to product characteristics.

For more detailed information on product packaging/handling, please contact your local sales organization.

www.SIPERNAT.comwww. AEROSIL.com

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EUROPE / MIDDLE-EAST /AFRICA / LATIN AMERICAEvonik Resource Effi ciency GmbHBusiness Line SilicaRodenbacher Chaussee 463457 Hanau-WolfgangGermanyPhone +49 6181 59-8118Fax +49 6181 [email protected]

NORTH AMERICAEvonik CorporationBusiness Line Silica299 Jeff erson RoadParsippany, NJ 07054-0677USAPhone +1 800 233-8052Fax +1 973 929-8502ask-si-na� [email protected]

ASIA / PACIFICEvonik (SEA) Pte. Ltd.Business Line Silica3 International Business Park#07 – 18 Nordic European CentreSingapore 609927Phone +65 6 809-6877Fax +65 6 [email protected]

This information and any recommendations, technical or otherwise, are presented in good faith and believed to be correct as of the date prepared. Recipients of this information and recommendations must make their own determination as to its suitability for their purposes. In no event shall Evonik assume liability for damages or losses of any kind or nature that result from the use of or reliance upon this information and recommendations. EVONIK EXPRESSLY DISCLAIMS ANY REPRESENTATIONS AND WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, AS TO THE ACCURACY, COMPLETENESS, NON-INFRINGEMENT, MERCHANTABILITY AND / OR FITNESS FOR A PARTICULAR PURPOSE (EVEN IF EVONIK IS AWARE OF SUCH PURPOSE) WITH RESPECT TO ANY INFOR-MATION AND RECOMMENDATIONS PROVIDED. Reference to any trade names used by other companies is neither a recommenda-tion nor an endorsement of the corresponding product, and does not imply that similar products could not be used. Evonik reserves the right to make any changes to the information and / or recommendations at any time, without prior or subsequent notice.

AEROSIL® and SIDENT® are registered trademarks owned by Evonik Industries AG or its subsidiaries.AEROSIL® and SIDENT® are registered trademarks owned by Evonik Industries AG or its subsidiaries.AEROSIL


SIPERNAT® SPECIALTY SILICA in the animal feed industry

Documents

SIPERNAT® SPECIALTY SILICA · Vitamin E acetate as an oil and as an absorbate on SIPERNAT® 2200 Figure 2 ... Specialty Silica as Flow Aid, Anticaking Agent and Car-rier Substance