Method for preparing copying ink powder pigment carbon black from coal tar

The invention relates to a method for preparing copying ink powder pigment carbon black, in particular to a method for preparing copying ink powder pigment carbon black from coal tar, and belongs to the technical field of carbon black. The copying ink powder pigment carbon black is prepared by a furnace carbon black ozone oxidation method which comprises the two steps of preparing a carbon black base material and oxidizing the carbon black, and the prepared finished carbon black product is used for a copier. Compared with foreign similar products, the copying ink powder pigment carbon black has basically the same technical performance as several kinds of imported copying ink powder pigment carbon black.