Preparation method of titanium dioxide for chemical fiber

Abstract

The invention discloses a preparation method of titanium dioxide for chemical fiber, which comprises the following steps of dispersion, ball milling, sand grinding, ion grading, post treatment, press filtering, spray drying, air flow crushing, magnetic suction and package. The preparation method is characterized in that in the dispersing step, titanium white kiln falling products are dispersed by deionized water with the pH value being 10 through being stirred for 0.5 to 1 hour at the rotating speed being 800 to 1200 r / min. The indexes of the prepared titanium dioxide such as the whiteness, the purity, the fineness, the iron trioxide content and the like completely reach the quality index of titanium white for the chemical fiber.

Description

technical field [0001] The invention relates to a preparation method of titanium dioxide for chemical fiber. Background technique [0002] In order to improve the transparency of synthetic fibers and obtain bright colors after printing and dyeing, it is often necessary to add matting agents. Titanium dioxide is a good matting agent and is often used for internal and external matting. Adding a certain amount of titanium dioxide to the textile stock solution can not only get a good permanent extinction and whitening effect, but also does not affect the strength and physical properties of the fiber, and can also improve the toughness of the product. Chemical fiber products that have been extinguished by titanium dioxide are easy to Dyed, feels good. [0003] Titanium dioxide requires good whiteness, strong tinting strength, purity, fineness, content of ferric oxide, and loss on ignition. Water dispersibility, etc. have corresponding requirements. However, the products produ...

AI Technical Summary

Problems solved by technology

However, the products produced by the existing titanium dioxide production methods are difficult to meet the requirements