State-of-the-art compacting technology for sand molds can make a significant contribution to casting efficiency provided that the molding sand consistently meets stringent quality criteria.

The most important quality criteria for molding sand are:

• Exact compliance with compactibility specifications
• Excellent flowability
• Uniform strength values
• Optimal gas permeability

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The Eirich mixing system is ideally suited to meet this requirements profile:

• Perfect homogenization of return sand, new sand and additives
• Fast, complete distribution of the water which is added to the mix
• Sufficient duration of the wet mixing phases
• The bentonite is completely dispersed and forms a uniform coating on the grains of sand

The Eirich mixing system with its unique advantages produces top quality sand with excellent reproducibility.