Preparation method of negative oxygen ion powder

The invention provides a preparation method of negative oxygen ion powder. According to the preparation method, lithium chloride and tetraethoxysilane are doped into tourmaline powder at the same time, and the tourmaline powder is modified through heat treatment, so that the tourmaline-based negative oxygen ion powder with high negative ion release amount is obtained. Wherein the content of each component in the powder material is as follows in percentage by mass: 55-86% of tourmaline powder; 0.5%-1% of lithium chloride; the content of ethyl orthosilicate is 13-45%, and the calcining temperature is 300-400 DEG C. The preparation process is simple, the price is low, and the negative oxygen ion powder is excellent in performance and has a high negative oxygen ion release effect. 本发明提供了一种负氧离子粉体的制备方法。该制备方法通过在电气石粉中同时掺入氯化锂和正硅酸乙酯，并经过热处理对电气石粉进行改性，获得了负离子释放量高的电气石基负氧离子粉。其中各组分在粉料中质量百分比含量为：电气石粉：55～86％；氯化锂：0.5～1％；正硅酸乙酯：13～45％，煅烧温度为：300～400℃。本发明制备工艺简单、价格低廉，本发明的负氧离子粉体性能优异，具有高的负氧离子释放效果。