| 摘要 |
A continuous sand muller for efficiently mixing foundry sand and resin/catalyst binder additives includes a pair of preblending tubes and a primary mixing tube. Sand and the resin binder are introduced into one of the premixing tubes where the resin binder is thoroughly mixed with the sand. A catalyst is added to the sand in the second premixing tube where it is also thoroughly mixed with the sand. Both of the premixing tubes simultaneously deposit the premixtures into the primary mixing tube. A high intensity auger combines the two premixes and delivers the final sand mix to an outlet. A sand supply system and a binder supply system are provided for instantaneous supply of sand and binder additives to the premix tubes.
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