Artboard 1Artboard 1Checkmarkclose-chubbyCombined ShapeexpandExternal-LinkUntitled-3gridlkab-breadcrumb-startinfoUntitled-1listplay-linkplay-sololkab-printikon-sök-lkabTwitterYouTube

Foundry sands and binders

LKAB Minerals' product portfolio for the foundry industry ranges from core and mould sands to binders and core additives.

Your contact for 

Martin Meese

Product Manager, Foundry & Glass


LKAB Minerals supplies a range of both naturally occurring Sodium and activated Calcium Bentonite raw materials from both USA and Greek origins. Our raw materials are sourced from recognised deposits that ensure supplies of the highest levels of quality and consistency. Our foundry grade materials are categorised by the development of excellent physical properties and high levels of thermal stability. Additionally, all of our available Bentonite raw materials can be supplied pre-blended with carefully selected and pre-graded Coal and Lustrous Carbon producing materials in order to meet the needs of individual customer requirements.

Iron Oxide

Iron Oxides are used as core sand additives to suppress the incidence of several sand/binder related defects such as nitrogen carbon pick up, finning/veining, pinholing, and orange peel defect in shell moulding sands. Iron Oxide is available in a range of grades and is customised to individual requirements.

Frame for moulding parts


MinSand is a synthetic sand produced from Alumina. Because of its almost perfectly spherical particle shape, MinSand is widely used in the foundry industry as a mould and core sand. In core production, binder savings can be achieved when compared to other sands. This is attained without any loss in the core’s strength. At the same time, MinSand’s excellent flowability during the core making process enables intricate cores to be blown achieving a denser more defined finish. Combining that with its high thermal stability, use of a MinSand core ensures excellent internal casting finishes.

Chromite Sand

Chromite Sand is a naturally occurring mineral consisting primarily of the oxides of chrome and iron. Its properties enable the material to be used in high duty grey iron and steel foundries as a core and mould making sand. Its high thermal conductivity gives it good chilling properties whilst its low thermal expansion gives rise to good dimensional stability. Its basicity being close to neutral allows the use of a wide range of resin bonding systems and inorganic binders.


Olivine is a naturally occurring mineral sourced from Norway. Olivine Sand is suitable for use in alkaline resin bonded systems and produces a clean surface finish, making it suitable for foundry castings, especially for manganese steel and
non-ferrous metals casting.

Zircon sand & flours

Zirconium silicate or Zircon is a naturally occurring sand. Zircon's low thermal expansion rate, its high thermal conductivity and its non-wettability by molten metal make it an ideal mould and chill sand. Zircon Flour is also used in core and mould coatings to improve surface finish.


The good thermal stability, high insulation, and low thermal expansion mean Cenospheres products are ideal for foundry applications including cast moulds.

Testing Services

Additionally, LKAB Minerals can offer to test foundry materials including:

  • Turbidity of water/fines in Chrome Sand
  • Viscosity of bentonite/polymer blends
  • Wet tensile strength of foundry sand
  • Fluid loss measurements
  • Green, sheer & dry strength of foundry sand
  • Air Permeability of foundry sand
  • methylene blue test
  • Acid Demand Value

Contact us to find out more.

Foundry moulds

LKAB Minerals supply natural minerals to the foundry industry.

Enlarge image

Interested in how our mineral solutions can provide value for Foundry Sands & Binders ?

Start by selecting your country to get the right contact person

My name is Martin Meese and I am located in United Kingdom.

Please give me a call or send me a message if you are interested in our mineral solutions for Foundry Sands & Binders

Office +44 1538 758400
Mobile +44 7768 826702

Call during business hours

09:00 AM - 17:00 PM

Local time in United Kingdom is 09:17 AM (UTC +1)

Send me your question

1500 characters remaining

Your contact information

Learn more about how LKAB Minerals works with GDPR.