Novel method for modifying white carbon black

The invention discloses a novel method for modifying white carbon black in the technical field of white carbon black, which comprises the steps of (1) carrying out suction filtration on filtered whitecarbon black by using a vacuum pump to obtain a white carbon black filter cake, and carrying out pressure filtration on the white carbon black filter cake; (2) feeding the filter-pressed white carbonblack into a first washing tank, pulping and stirring by using a pulping stirrer by taking water as a solvent, and then carrying out suction filtration on slurry by using a vacuum pump; (3) feeding the white carbon black filter cake washed for the first time into a second washing tank again for pulping and stirring; (4) feeding the white carbon black filter cake washed for the second time into athird washing tank, injecting alkali liquor into the third washing tank, adjusting the pH value to 6.5-7.5, and drying to obtain modified white carbon black. By adding the first washing tank, the second washing tank and the thi