一种安全氟石膏粉的处理方法
By using the stirring reaction of calcium carbonate, organic acid calcium salts, and calcium hydroxide, the problem of removing acidic substances and heavy metals from fluorogypsum was solved, achieving safe and efficient fluorogypsum powder treatment, and significantly improving product safety and environmental friendliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI ZHIMEITANG GYPSUM NEW TECH CO LTD
- Filing Date
- 2025-12-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for treating fluorogypsum cannot completely remove sulfuric acid, hydrogen fluoride, and other acidic substances from the crystals, resulting in fluorogypsum powder with an irritating odor, residual acid and fluoride, and heavy metals. Furthermore, these methods are inefficient and environmentally unfriendly.
After stirring calcium carbonate and fluorogypsum, organic acid calcium salt and calcium hydroxide are added. Through stirring and reaction, acidic substances and heavy metals are removed to generate anhydrous calcium sulfate and hemihydrate calcium sulfate. The pH value is adjusted to neutral and dried to obtain safe fluorogypsum powder.
It efficiently removes residual acid, residual fluoride, and heavy metal impurities from fluorogypsum, reducing the processing time to within 1 hour. The product's safety and environmental friendliness are greatly improved, with uniform pores and easy removal of adhering water, thus reducing energy consumption.
Smart Images
Figure CN121377580B_ABST