Patent ID: 8147293

Claim:
A method of in-situ recycling of an abrasive mixture in a high-pressure liquid jet system comprising: introducing a high-pressure liquid through a high-pressure liquid bore to a mixing area including at least a portion of the high-pressure liquid bore and an abrasive entry port; introducing a liquid-abrasive mixture to the mixing area through the abrasive entry port for being mixed with the high-pressure liquid and forming an abrasive-liquid mixture; discharging the abrasive-liquid mixture from the high-pressure liquid system through a discharge bore axially aligned with the high-pressure liquid bore and configured to form a high-pressure abrasive-liquid jet; catching at least a portion of the abrasive-liquid jet comprising an abrasive-liquid mixture exiting the discharge bore in a catching device; filtering the caught abrasive-liquid mixture in a filtering device to separate and dispose debris and derive a filtered abrasive mixture; and pumping the filtered abrasive mixture out of the filtering device and into the mixing area through the abrasive entry port to be mixed with high-pressure liquid.