The invention discloses an
impurity removing method suitable for tobacco fragments, and relates to the technical field of tobacco
processing. The
impurity removing process of the tobacco fragments comprises performing the following treatments on the fragments, homogenizing the material, spreading and
thinning, primary vibration-screening, performing primary electrostatic
impurity removing on largefragments, performing electrostatic impurity removing on small fragments and light impurities to bring out fragments, and treating partial impurities by a disc screen, performing secondary electrostatic impurity removing on the screened fragments, picking impurities by manual operation, classifying and packaging, and recycling the fragments. For the forms and characteristics of the impurities inthe tobacco fragments, the
linear vibration screening,
wind power separation, the disc screen, the electrostatic impurity removing, the manual impurity picking and like impurity removing ways are repeatedly and organically combined, the impurities can be removed after targeted sieving, the impurity removing is clean, the speed is fast, the degree of purity of the tobacco fragments is improved, thelabor intensity and the cost are reduced, the non-tobacco substances are controlled, and the waste of the tobacco is reduced.