Talc

LKAB Minerals offer fine Magnesitic Talc for various applications such as agricultural and horticultural, polymer processing, coating applications and the ceramics industry.

The raw material for the Talc product range is quarried in Shetland; an island at the top of the British Isles. This magnesitic talc lump is milled in the UK to produce carefully controlled particle sized products.

Talc Product uses

LKAB Minerals' talc products are grey and therefore more suited for bulk applications where colour is not of importance. These applications include kiln furniture manufacture, ceramics, agriculture, roofing, some coating applications and plastics.

Agriculture

In agricultural applications Talc’s anti-caking properties and lubricity make it effective for free flow carrier uses.

  • Used in fertilisers talc works as an anti-blocking agent which enables the feed cake to be broken up easily.
  • Using Talc as an anti-caking agent in animal feed improves fluidity especially in mixes where molasses are used. As Talc is inert it is the preferred choice for animal feed; it also prevents the growth of bacteria in feedstock.

Talc being used in animal feed to improve fluidity

Ceramics

Talc is used in ceramics because of its high fusion point used as a secondary flux in bodies and glazes. The low level of shrinkage talc imparts helps to improve craze resistance in ceramics.

Coatings industry

Within the surface coatings industry Talc is used in a variety of industrial coating applications including primers and undercoats. Talc is used as a filler/extender where it imparts corrosion resistance and increases paint stability. Talc can be used in solvent and waterborne paint applications.

LKAB Minerals has developed a talc product specifically for the coatings industry. Talc S20 is suitable for use in anti-corrosive and marine coatings. This 40% magnesitic talc will provide a barrier effect thereby reducing oxygen and water transmission to the substrate. The S20 talc product improves weathering resistance and reinforces the coating making it a viable alternative to other talc products.

Talc can efficiently be used in marine and anti-corrosion coatings

Plastics

Due to the grey colour Talc is suitable where colour and physical properties are not vitally important. It is used in a number of different polymer systems such as PVC used in flooring. Talc can also be compounded into polypropylene for injection moulding.

Talc Properties

The appearance of Talc is pearly and soapy with a solid wax feel, the mineral is translucent so light will pass through. The cleavage of Talc, i.e. how the mineral fractures upon processing, is basal. This basal cleavage means Talc breaks in one direction which results in flake shaped pieces.

Physical properties:

Specific gravity (g/cm³) 2.8
Refractive index 1.62
Colour L/b 88/4
Tamped bulk density (kg/l)
1.1
Loose bulk density (kg/l) 0.6
Moisture (%) 0.2

Chemical properties:

Magnesium as MgO (%)
33.3
Silica as SiO2 (%)
30.2

Talc standard grades

  • Talc S2 100#
  • Talc S2 200#
  • Talc S2 300#
  • Talc S20

Talc packaging

Our Talc product range is available in paper sacks or big bags. Due to the products conditions no bulk solution is available.

Talc origin

LKAB Minerals' Talc raw material is quarried in Shetland; an island at the top of the British Isles.

Talc toxicology

A non-toxic, non-hazardous stable mineral. You can download the Safety Data Sheet in the section on the right hand side for further information.

Please contact us for datasheets on a single grade or further information on our Talc product range. You can find our sales contact by chosing your country in the upper right of this page or by visiting our contacts page.

Product expert

Ray Bent
Sales Manager

Ask me a question. Contact information.

Documents

More information

  1. Talc S2 Product Definitions.pdf

Safety data sheet

  1. Talc SDS
  2. More languages upon request.

Products