Gracias por contactar!


Alumina balls for catalyst support, petrochemical and fertilizer industries XIETA® - 99

These balls are produced with a high percentage of alumina in its highest degree of calcination, which confer them high mechanical properties and high resistance to the thermal stress. Due to its elevated purity and low silica content, these balls are specially designed for top temperatures applications in harsh environments, where we can find the action of acids and steam at high temperatures.

The XIETA®-99 ball is especially recommended for the utilization as a catalyst support in the chemical and petrochemical industries. It is also used exclusively in the “secondary reformer” of the fertilizing plants, during the production of the urea ammonia. Moreover, these balls are also recommended as filler in Packing Towers.

Finally, these balls are also successively being used in Heat Exchange applications such as the regerative burners, and also in the filters DBF (“Deep Bed Filter”) in the metal casting industries. 

  • Very high hardness and mechanical resistance
  • Excellent wear resistance
  • Total corrosion absence
  • Very high chemical attack resistance
  • A smoother, regular and uniform surface
  • General Properties

     Main Raw Material

    Calcined Alumina

     Alumina Content (%)                                     

     ≥ 99

     Silica Content (%)                                           

     ≤ 0.3

     Density (g/cm3)                                           

     ≥ 3.20



     Mohs Hardness

    > 8

     Apparent Porosity (%)

    ≤ 7

     Water Absorption (%)

    ≤ 5

     Acid Resistance (%)


     Thermal Conductivity (W/m2 ok) 


     Maximum Operating Temperature (ºC)            


     Thermal Expansion Coef. (20-600 ºC)


  • Chemical Composition

    Al2 O3  (%)

     ≥ 99

    SiO2  (%)

     ≤ 0.3

    Fe2 O3  (%)

     ≤ 0.2

    MgO (%)

     ≤ 0.2

    Na2 O (%)

     ≤ 0.1

    K2O (%)

     ≤ 0.1

    Others (%)

     ≤ 0.1

  • Available Sizes






     3-5 mm


     14 mm


     5-7 mm


     16 mm


     7-9 mm


     18 mm


     9-11 mm


     20 mm


     12 mm


     25 mm

    All our products fully fulfill with the UOP specifications and standards.

    Data and specifications contained in this web may be subject to any change or modification by the manufacturer without notice.

    In case you need any clarification or you have any query, please contact our technical department.



Click here to contact.

C/Travessera de Gràcia 62, At. 7.
08006 - Barcelona-Spain

C/Cantabria, 10 - POL INDUSTRIAL EL COLADOR, onda,
12200 - Castellon - Spain

Telf.: +34 934 147 227

Fax: +34 934 142 837

E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.

Technical assistance milling | Technical query with our technical department.

We offer a personalized grinding technical advisory service.

Click here

Check Privacy Policy

For the purposes of the provisions at The Organic Law 15/1999, dated on December 13th, where user privacy is concerned and outlines the obligations & requirements of the users, XIETA INTERNATIONAL, S.L., based in Travesera de Gracia Nº 62, At. 7ª, 08006-BARCELONA, takes a proactive approach to user privacy and ensure the necessary steps are taken to protect the privacy of its users throughout their visiting experience. XIETA INTERNATIONAL, S.L. website comply´s to all Spain national laws and requirements for user privacy.

No personal information is stored, saved or collected.

XIETA INTERNATIONAL, S.L. website uses cookies to better the users experience while visiting the website. Cookies are small files saved to the users computers hard drive that track, save and store information about the users interactions and usage of the website. This allows the website, through it's server to provide the users with a tailored experience within this website.

Users are advised that if they wish to deny the use and saving of cookies from this website on to their computers hard drive they should take necessary steps within their web browsers security settings to block all cookies from this website and it's external serving vendors.

Users contacting XIETA INTERNATIONAL, S.L. website and/or it's owners do so at their own discretion and provide any such personal details requested at their own risk. Your personal information is kept private and stored securely until a time it is no longer required or has no use, as detailed in the The Organic Law 15/1999. Every effort has been made to ensure a safe and secure form to email submission process but advise users using such form to email processes that they do so at their own risk.

XIETA INTERNATIONASL, S.L. website and it's owners use any information submitted to provide you with further information about the products / services they offer or to assist you in answering any questions or queries you may have submitted. This includes using your details to subscribe you to any email newsletter program the website operates but only if your express permission was granted when submitting any form to email process.