| 摘要 |
An apparatus for treating contaminated particulate mineral material, wherein the material is treated as an aqueous slurry, comprises a mixing chamber, slurry inlet 20, outlet 21, means for subjecting the slurry to extreme shear forces by injecting water from a first injection point 27 at extremely high pressure, wherein the slurry flows 33 from inlet to outlet, the cross-section of the mixing chamber increases adjacent the first injection point and the apparatus also includes a second water injection 34 means in the area of increased cross sectional area which creates a counter current to protect the mixing chamber walls from wear. The first injection point includes a ring of nozzles (see fig 4) and the second water injection means comprises a pair of nozzles. The apparatus forms part of a system (fig 1) which is used to treated oil contaminated sand or slit, comprising a high pressure reactor and desilter. |
