A kind of preparation method of sodium chloride salt brick capable of releasing negative oxygen ions under light

Abstract

A method for preparing sodium chloride salt bricks capable of releasing negative oxygen ions under light, the method comprising the following steps: step 1, putting raw salt into a high-temperature furnace, heating to 5000°C within 3 hours, and then cooling down within 2 to 3 hours to 3000°C, and then naturally cooled to room temperature to obtain the pretreated product A; Step 2, grind the pretreated product A for 30 minutes and pass through an 80-mesh sieve, collect the sieved powder and put it into a mold, and keep it at 40MPa for 10 minutes, After demolding, the pretreated product B is obtained; step 3, the pretreated product B is re-moved into the high-temperature furnace and heated to 3000°C within 10 minutes and kept for 1 hour, then continue to heat up to 7000°C within 1 hour, and then cool down to 5000°C within 4 hours After ℃, the temperature is raised rapidly to 8000 ℃, and then cooled to 7000 ℃ within 2 hours; step 4, the pretreatment product B that removes moisture and adsorbed gas in step 3 is rapidly heated from 7000 ℃ to 11000 ℃ and kept for 3 hours, and then After cooling down to room temperature within 6-8 hours, the final product can be obtained. The salt brick can be used for interior decoration and steaming for health care.

Description

technical field [0001] The invention belongs to the field of application and production of NaCl crystal materials, and specifically relates to a method for preparing sodium chloride salt bricks capable of releasing negative oxygen ions under light. The method enables NaCl crystal grains to obtain high-concentration optically active centers—color centers—in high-temperature air Melting reaction, releasing high concentration of negative oxygen ions. Background technique [0002] Sodium chloride (NaCl) materials have always played an important role in various fields of human life. However, it is particularly worth mentioning that NaCl crystal materials have attracted widespread attention due to their good performance in optical nonlinearity and optoelectronics. With the help of spectroscopic detection technology, it has been found that the absorption spectrum of NaCl crystal materials prepared under certain environmental conditions can cover the near-ultraviolet to near-infrar...

AI Technical Summary

Problems solved by technology

However, the biggest obstacle hindering the popularization of negative oxygen ion equipment is the price issue: on the premise of quality assurance, high quality and low price are what consumers love to see!

Images