一种饲料级磷酸钙盐的制备方法
By first desulfurizing, removing heavy metals, and then defluorinating in wet-process phosphoric acid, metal impurities are selectively removed, solving the problems of white fertilizer production and phosphorus resource waste in traditional processes, and realizing the preparation of high-quality feed-grade calcium phosphate and resource recycling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WENGFU (GRP) CO LTD
- Filing Date
- 2024-02-02
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional feed-grade calcium phosphate production processes are difficult to produce high-quality products, resulting in white fertilizer and defluorination residue, which leads to waste of phosphorus resources and decline in product quality, and metal ions are not effectively removed.
By first desulfurizing and de-gravity-removing the wet-process phosphoric acid to selectively remove metallic impurities, and then adding a defluorinating agent to form calcium fluoride precipitate, which is then washed, filtered, and reacted with calcium oxide or calcium carbonate to prepare feed-grade calcium phosphate, thus achieving resource recycling.
It improves phosphorus yield and defluorination effect, produces feed-grade calcium phosphate with fewer impurities, higher quality, no white fertilizer production, high water-soluble phosphorus content, improved economic benefits, and realizes the resource utilization of metal impurities.
Smart Images
Figure CN117945375B_ABST