Tourmaline powder modifying process

Abstract

The tourmaline powder modifying process includes the following steps: 1. grinding tourmaline powder to D90 not greater than 5 microns; 2. mixing deionized water and the powder into slurry with the powder accounting for 10-50 wt%; 3. modifying the slurry through ultrasonic vibrating in an ultrasonic processing tank at ultrasonic frequency of 40-200 kHz for 1-12 hr; 4. drying the slurry at 100-200 deg.c to eliminate water; and 5. re-grinding to obtain modified tourmaline powder with D90 not greater than 5 microns. The process has obvious tourmaline powder modifying effect and low power consumption.

Description

【Technical field】 [0001] The invention relates to the modification of ore materials, in particular to a method for modifying tourmaline. 【Background technique】 [0002] In recent years, with the continuous and rapid development of my country's economy, people's living standards have been greatly improved, providing a huge market space for the development of the building decoration materials industry. However, the decoration materials do not meet the requirements of environmental protection and exceed the limit standards of harmful substances stipulated by the state, resulting in long-term unoccupied rooms after decoration, or causing harm to human health after occupancy, and causing continuous disputes between owners, developers, and decoration companies. [0003] In the 1980s, people discovered natural negative ion generating materials, the most striking of which was tourmaline. At present, tourmaline and its modified mineral powder are added to various building decoration...

AI Technical Summary

Problems solved by technology

However, due to the limitations of existing technologies, the modification and processing technology of tourmaline is relatively complicated, and many of them need to be fired at high temperature, which consumes a lot of energy, and the release ability of negative ions is low, and the processing cost is high.