Foundry Industry


The foundry industry adds Iron Oxides to molding sand to avoid surface defects on castings. It also increases stability of the moulds and further more the colouring of the castings are helpful.

When Iron oxides losses oxygen, the loss of volume is insignificant but has a positive effect on the flow of the surface of the sand grains.

Red iron oxides are generally added in a proportion of 1-2% which has proven to be suitable also with other sand additives. Black iron oxides is fractional coarser and should be used by 1-4%

Suitable products are, i.e. Bayferrox® Red 110, 120, 130 und 222, Bayferrox® Yellow 920 and Bayferrox® Black 318.

Other products like Carbon Blacks are used as an insulating method to service melting as well as being used as filler in refractory material.

The technical ability of carbon blacks is use for the production of casting and form sand additives. Carbon black is also employed as blackwash.

Beside thermal and lamp blacks we offer a variety of furnace blacks. Additional to the ASTM types (N-types). All products are available in liquid contents, i. e. Euronyl® CB) and granulated texture specially developed for the foundry industries.

Notice The following shade cards are only approximately representable in EDP medium,
depending on individual technical equipment the shown shade card may differ from reality.

This information and our technical advice - wether verbal, in writing or by means of trials - are given in good faith but without any warranty and this also applies where proprietary rights of third parties are involved.

Our advice does not release you from the obligation to check its validity and to test our products as to their suitability for the intended process and uses. The application, use and processing of our products and the products manufactured by you on the basis of our technical advice are beyond our control and, therefore, entirely your own responsibility. Our products are sold in accordance with our General Conditions of Sale and Delivery.