Patent ID: 7022224

Claim:
In a magnetic hydroseparator for separating iron ore from a slurry of iron ore and rock in at least one fluid, the hydroseparator comprising a body with an upper drain, a supply device operatively connected to the body, a driving scraping device in the upper part of the body, the driving scraping device operatively positioned for interaction with an annular magnetic system, and an unloading device at the bottom of the body with a washing device, the washing device includes means for adding a washing fluid which is a combination of liquid and gas to the body, the improvements wherein the hydroseparator is vertically oriented, the annular magnetic system extends below the level of the upper drain, variable speed means for rotatably driving the, scraping device is to vary its speed of rotation, the washing device includes means to vary the quantity of the washing fluid used in the device and the concentration of gas in the washing fluid, and wherein the lower part of the body is conically shaped.