Preparation method of beta-type beryllium hydroxide crystal

By adopting a multi-cycle precipitation process in the beryllium hydroxide precipitation process and precipitation under low temperature conditions, the problems of high energy consumption and large ammonia water consumption in the existing process are solved, and more than 70% of ammonia water consumption and energy consumption are reduced, and pure beta-type benzene hydroxide crystals are obtained.

CN119663020APending Publication Date: 2025-03-21NANHUA UNIV
0 Cites 0 Cited by

Patent Information

Application Number
CN202411908037.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

In the existing beryllium hydroxide precipitation process, high energy consumption and large ammonia water consumption, and the large volatility of ammonia water increases the risk factor of the operation position.

Method used

The multi-cycle precipitation process is adopted, and the last precipitation is used as the seed crystal, and precipitation is carried out under low temperature conditions. Through the characteristics that the solubility of the micro crystals is greater than that of the coarse grain crystals, the solution concentration is increased, and the large grain growth is promoted, and the coarse grain crystals required by the industry are finally formed.

Benefits of technology

It significantly reduces ammonia water consumption, reduces energy consumption, reduces the harm of ammonia water volatility to operators, and obtains pure beta bellium hydroxide crystals through subsequent alkaline washing.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention belongs to the technical field of metal compound extraction, and particularly relates to a preparation method of a beta-type beryllium hydroxide crystal. According to the preparation method provided by the invention, a precipitation reaction does not need to be carried out under a high-temperature boiling condition, cyclic precipitation is carried out under a low-temperature condition, a product of a previous precipitation reaction is used as a seed crystal, and during a next precipitation reaction, because the solubility of micro crystals is larger than that of coarse-particle crystals, the micro crystals are promoted to be dissolved, and the solution concentration is increased; substances in the solution continue to be separated out on large-particle crystals, large crystal grains continuously grow up, finally coarse-particle crystals required by the industry are formed, the consumption of ammonia water is reduced by 70% or above, obtained alpha-type beryllium hydroxide precipitates are subjected to subsequent sodium hydroxide solution alkali washing and heat treatment, impurities are removed while post-crystal-form conversion is conducted, and beta-type beryllium hydroxide is obtained. According to the method, the harm of ammonia volatilization to operators is reduced, the energy consumption can be reduced, and the cost is saved.
Need to check novelty before this filing date? Find Prior Art