| 摘要 |
The invention relates to a process for cleaning fibre suspensions, especially in the cellulose and paper industry, in a hydrocyclone installation which comprises two groups A, B of hydrocyclones, one group A or B for separation of heavy particles and one group B or A for separation of light particles, the suspension which arrives in each hydrocyclone being divided into an accepted portion and a rejected portion, the rejected portion 7, 17 from the first hydrocyclone A1 or B1 being at least partially fed to the second hydrocyclone A2 or B2 in the same group A or B, and the first hydrocyclone B1 in the second group being supplied with the accepted portion 4 from the first hydrocyclone A1 in the first group, if appropriate via an intermediate treatment stage, which method is characterized in that at least part of the accepted portion 18 from the second hydrocyclone B2 in the second group is fed to one hydrocyclone A1 or several hydrocyclones in the first group A and/or the treatment stage. <IMAGE> |
