This refining system consists of a large PPl cylinder inclined to an angle of 25°, it continuously rotates by means of a special motor, with the possibility to adjust the rotation speed.  The rotation forces the grains to rub against each other and consequently a rapid and effcient dissolution process is induced.

A Pyrex glass condenser is positioned externally to the tumbler  with cold water circulating inside that allows for partial acid recovery and initial fume neutralization. 

Another advantage is that it can work throughout the night without supervision.

The EFZERO gold refining plants, produced by Italimpianti Orafi, can refine all kind of gold alloys without development of any sort of acid fumes and with recovery of nitric acid.

The titanium refining tumbler is a new versatile, durable, and heavy-duty unit for the dissolution of precious metal alloys.

This is an innovative system that allows precious metal alloys to be refined with both aqua regia and inquartation.

The aqua regia refining process is used to refine gold alloys using a combination of acids and chemical products. The aqua regia solution consists of a mixture of hydrochloric acid HCL and nitric acid HNO₃.