Through experiment on spent bleaching earth with plunger-styled pressing appara- tus, approaching the relationship between the oil-extracting rate of spent bleaching earth and press is explored, and the relationship between the stress and strain in the cold-pressing processing of spent bleaching earth is also explored. The results demonstrate that oil-extracting rate of spent bleaching earth increases with the press, when the press reaches 60 MPa, the highest oilextracting rate can reach 66.4%. Considering the economy factor, it is appropriate for the press to choose 40 MPa, and the oil-extrac...
