Special grinding ball of titanium dioxide and preparation method thereof

Abstract

The invention discloses a special grinding ball of titanium dioxide for grinding in titanium dioxide industry and a preparation method thereof. The raw materials of the grinding ball comprise the following components by weight percent: 3.40%-3.80% of C, 2.30%-2.60% of Si, 0.60%-1.00% of Mn, 0-0.035% of S, 0-0.35% of P, 0-0.03% of nanometer alloy modifier, 0.01%-0.03% of rare earth magnesium and the balance of steel scrap (Fe). The preparation method of the special grinding ball is based on the alloy cast ball casting technology and comprises the steps of changing chemical compositions and adjusting heat treatment technology. The special grinding ball of titanium dioxide prepared by the formulation and preparation method of the invention has extremely low chromium alloy content, high hardness and low wear and out-of-roundness, and titanium dioxide grinded by the grinding ball has high purity, good whiteness and high quality.

Description

technical field [0001] The invention relates to a grinding ball of a ball mill, in particular to a special grinding ball for titanium dioxide and a preparation method thereof. Background technique [0002] The ball mill is a common equipment for fine crushing after the material is crushed. It is indispensable in the production process of titanium dioxide. The ball of the ball mill is the most important basic accessory of the ball mill. my country's titanium dioxide production industry uses about 10,000 tons of ball mill balls per year, and most of the balls used are bearing steel balls or low-chromium alloy balls. Using these two types of balls to grind a ton of titanium dioxide will have more than 100 grams of grinding balls are worn away, causing metal components that are taboo for titanium dioxide such as chromium, molybdenum, and nickel in the grinding balls to fall into the titanium dioxide, resulting in excessive chromium, molybdenum, and nickel content in the obtained ...

AI Technical Summary

Problems solved by technology

my country's titanium dioxide production industry uses about 10,000 tons of ball mill balls per year, and most of the balls used are bearing steel balls or low-chromium alloy balls. Using these two types of balls to grind a ton of titanium dioxide will have more than 100 grams of grinding balls are worn away, causing metal components that are taboo for titanium dioxide such as chromium, molybdenum, and nickel in the grinding balls to fall into the titanium dioxide, resulting in excessive chromium, molybdenum, and nickel content in the obtained titanium dioxide, which affects the quality of the titanium dioxide. Purity and Whiteness