Ceramics Expo, 25th to 27th April 2017

Imerys Refractory Minerals’ sales and technical team will be happy to welcome you during  Ceramics Expo  taking place in Cleveland, Ohio from April 25th to 27th on booth n° 524 in the center of the exhibition hall.

Ceramics Expo is the world’s largest annual free-to-attend expo for the advanced ceramic and glass community, established in the state which is recognized internationally as the “Fuel Cell Corridor”. Indeed Ohio is widely considered a center of science and industry with a strong representation from many key industries utilizing ceramic materials and components including automotive, aerospace, medical and environmental technology sectors.

We take this opportunity to present the divisions’ full range of ceramic solutions: our state of the art calcined clays Mulcoa® and Molochite™ as well as our fused silica Teco-Sil®.

Ceramics Expo

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2017 ACerS Spring Meeting

St. Louis Section and the Refractory Ceramics Division of the American Ceramic Society sponsor the 53rd annual St. Louis spring meeting on refractories with the theme, “Real World Applications of Refractory Testing”. This year,  Imerys Refractory Minerals’ contribution to ACerS will come through Scot Graddick, Technical Director and Product Manager of Mulcoa and Teco. He will address “The effect of aluminosilicate calcine quality on finished monolithic refractory hot properties” at 8.45 am, Wednesday 29th March.

The study was undertaken by Scot Graddick, Dave Tucker, Chris Beiter, Danilo Frulli from Imerys Refractory Minerals and  Steffen Möhmel refractory engineer from the Center for Abrasive & Refractory Research & Development C.A.R.R.D The outcomes and results will be presented for the first time during the ACerS spring meeting.

The event will take place March 29 – 30, 2017 at the Hilton St. Louis Airport Hotel 10330 Natural Bridge Rd St Louis, Missouri 63134 United States.

Click below for further information:

2017 St. Louis Registration Form

2017 Agenda ACerS meeting

Further upcoming ACerS meetings

Imerys Refractory Minerals at 5th ICRJ, India

During ICRJ 2017, Danilo Frulli, Marketing & Innovation Director of the Imerys Refractory Minerals division will contribute to the event with an abstract entitled “Properties of Andalusite and Mullite minerals and their applications in the steel & iron industry”.

Dr. Frulli will be speaking Thursday, 8thFebruary at 9.45 am at the Wave International in Jamshedpur. Feel free to join the conference. For any specific information, please contact our local Sales Director, Ananth Nonavinakere : ananth.nonavinakere@imerys.com

Jubilee Parc offered by Tata to the people of Jamshedpur, India

A place to visit during ICRJ 2017 : Jubilee Parc offered by Tata to the people of Jamshedpur, India

ICRJ 2017 Schedule

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Kerphalite™ KF : moulding material for precision casting

Casting, Plant & Technologie, December2016

Casting, Plant & Technology, December 2016

In its December edition Casting, Plant and Technology International  published the following article about the key role of Kerphalite KF for precision casting written by Joachim Wolff (Imerys Refractory Minerals), Sabine Umla-Latz and Martine Dahlmann (Hüttenes-Albertus).

Complex cast parts such as turbocharger housings play a central role in the design of modern high-performance engines. Due to its particular characteristics, silica sand has its limits as a moulding material when it comes to casting finely structured components, reduced wall thicknesses and perfect surfaces. Thanks to its high temperature load strength and a strong resistance to metal penetration, Kerphalite™ KF, a special sand produced in Brittany for special applications in the foundry industry, has proven itself suitable for these types of applications in many foundries.

In central Europe, silica sand is available in large quantities and in good qualities, and is widely used in foundries as an economical basic moulding material. But it also has negative properties, which may lead to problems when producing sophisticated castings. These particularly include the so-called quartz inversion, i.e. the abrupt expansion of the specific volume at 573°C. It occurs during virtually every casting process and may lead to sand expansion defects, mainly in the form of finning (also called veining). The moulding material can crack under high temperature load, allowing liquid metal to seep into the resulting cracks and cavities. To read the article on pages 14 click on following title “Kerphalite™ KF : high performance moulding material for precision casting”

Community project restores dignity to girls

community-project-restores-dignity-to-girls

Since several  years, Imerys Refractory Minerals implements education programs, supports agricultural cooperatives and modernizes infrastructures to improve life standards of its employee’s communities.

Late 2015 Imerys South Africa started partnership with The Peace Agency  to fund  locally produced Subz Pads packs of washable sanitary pads and underwear to fight against absenteeism and drop-outs of girls in high school living close to Imerys Annesley mine in the Limpopo province. It appears that 60 %+ of girls in South Africa miss 18 months (out of 5 years) of high school due to not having access to sanitary products.

Xolisa Mvinjelwa, Executive Director for Ethics & Transformation, explains “The villages around our mine are made up of poor communities with high unemployment and low levels of education. Families depend on grants and parents are unable to afford these sanitary pads.”

the-peace-agencyThis action is beneficial to both, Imerys employees and the girls. Together with NGO representatives, Imerys employees distribute these reusable pads and take the occasion to talk to the girls about health and hygiene issues during their visits, thus tying bonds.

In 2016 the initiative was repeated and extended to other schools. Schools’ principals and staff observe a lower rate of absenteeism and drop-outs. Furthermore they feel that the girls have more confidence in themselves which enhances the level of creativity in the classroom.

New Face Coat Material for Investment Casting Molds

Imerys Refractory Minerals for foundry applications in collaboration with CARRD, Imerys R&D center for refractories & abrasives, developed a new solution for face coat material.

The Treibacher Alodur WRG IC ESR , a synthetic material  based on fused alumina, is the ideal alternative to zircon for face coat applications.

Our solution was introduced during WCIC, World Conference of Investment Casting held in Paris in April 2016 by Dr Thomas Krumrei , CARRD R&D engineer and expert of Investment Casting technology.

incast-2016-march-editionModified Fused Alumina, Treibacher Alodur WRG IC ESR: A New Generation of Products
Specially modified fused alumina (WRG IC ESR) exhibits outstanding properties, when it comes to heat resistance and chemical stability. These properties allow casters to avoid vitrification and migration of alloying elements into the ceramic mold. Furthermore, its high heat and deformation resistance is one key element to producing castings with extremely tight tolerances (for e.g. turbo charger wheels).

Another key advantage of modified fused alumina is its excellent compatibility with standard Na-stabilized binders. Even after 10 months test-runs, slurries show no signs of changes in optical, pH, or viscosity values.

The lack of natural impurities and variations, especially in face coat materials is definitely one of the biggest advantages of this new primary coat generation. Use of this material allows for irregular appearance of defects in castings to be reduced to a minimum….

Read more about this innovative technology by clicking on INCAST magazine.

1st Imerys Refractory Minerals Safety Day

First Imerys Refractory Minerals Safety Day

At Imerys Refractory Minerals just as throughout the Imerys group, safety is our number one priority. Imerys develops a proactive safety and health culture by implementing the three pillars of the Imerys Safety System: compliance, continuous improvement and communication. It is structured along the following lines: clearly defined audit protocols, regular audits, a global training plan, safety training based on a behavior-based model, an accident analysis program and a serious accident prevention plan, as well as events designed to strengthen safety culture.

Over the past years, various actions were taken to modernize production sites and machinery, and important means were put on improvement of security awareness throughout the Imerys Refractory Minerals staff. Whether high or medium level managers or workers on the production sites in France, the UK, the USA, South Africa and China, everybody took action for best security within the division.

November 24th was 2016 Safety Day at Imerys Refractory Minerals. Each production site interrupted its activity for half a day bringing together local staffs to strengthen safety awareness. Time was dedicated to align with the division safety targets, actions and results. Teams were given the opportunity to discuss their local security approach and behavior change thanks to the “Take 5” program for example. “Take 5” is a pre-task risk assessment and reduction tool helping drive safety awareness to all employees. It was launched in 2014. Early this year “Serious7” went life. It is a new protocol  for forklift safety helping site managers to review specific issues such as technical deficiencies or regular maintenance matters.

Randalusite™ Premium: purest andalusite grade ever

Imerys Refractory Minerals launched a new product called Randalusite™ Premium, which is the highest quality andalusite available on the market. Indeed,  Randalusite™ Premium is the purest product in terms of chemical and  mineral composition.  It allows refractory producers to use andalusite applications where high creep resistance are mandatory. A study comparing the perfor­mance of different types of andalusite raw materials was presented during the 2016 Aachen Refractory Colloquium. In this study, a broad range of andalusite was characterised, in particular regarding chemical and mineralogical composition. Specific attention was given to the distribution of impurities across the different size fractions.

Refractory bricks and castables were produced from each type of andalusite on a laboratory scale in order to establish a correlation between the raw material purity and the refractory performance. Thermo-mechanical properties such as Refractoriness under Load (RuL) and Creep in Compression (CiC) were investigated, with a particular focus on the impact of impurity level, its enrichment in the matrix and its influence on the microstructure.

Creep Compression of Randalusite Premium

Creep Compression of Randalusite Premium

The outcome of the study allowed Imerys Refractory Minerals to launch Randalusite™ Premium.  Its alkalis are lower than 0.35% and its alumina higher than 60%. It is obtained by advanced processing designed for high performance bricks & castables thus opening doors to new applications for andalusite based refractory solutions. Find out more about Randalusite™ Premium