Bound multi-component sand additive

Details Bound multi-component sand additive Bound multi-component sand additive

B - Operations, Transporting

22

C

B22C 1/22 (2006.01) B22C 1/02 (2006.01) B22C 1/16 (2006.01)

Patent

CA 2153367

Two or more sand additive particles are made to adhere to each other, using a binder. The finished product consists of free-flowing particles that are composed of the additive particles bound together by the binder. These bound additive particles may then be applied to sand, such as foundry sands, where, otherwise, multiple additions of additive might need to be made. The pH of the single additive particles can be controlled and separation of the additives due to different specific gravities can be avoided. Various mixtures of different additives are disclosed Methods of controlling particle size of additive particles, tendency to generate dust, degrade tensile strength or control thermal expansion of foundry cores or molds by using bound additive particles are also disclosed.

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