High temperature Solutions – Foundry

Green Sand Bonding Technologies

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RIKO© - Recovery of Bentonite & Carbon From Foundry Dust
A Unique Process Technology


Foundry Dust Collection and the Loss of Beneficial Materials

Bentonite and carbon have long been used as key components in the green sand casting process. In 2018 United States Foundry Industry consumed approximately 700,000 tons of bentonite and carbon.

Silica sand has been used in the green sand process for hundreds of years. Recently the United States Environmental Protection Agency instituted tighter regulations on the Permissible Exposure Limits for silica sand dust. This has meant an increased focus on, and need for additional ventilation and dust collection. While this ventilation and dust collection reduces the amount of fine silica sand, it extracts other useable materials, such as active bentonite and carbon.

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