一种钼尾矿制备高品质硅钙钾镁肥的方法
By combining two flotation processes and high-temperature calcination with flue gas treatment, the problems of high heavy metal content and low nutrient utilization rate in molybdenum tailings have been solved. High-quality silicon-calcium-potassium-magnesium fertilizer that meets national standards has been produced, realizing the large-scale and high-value utilization of molybdenum tailings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2023-12-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for preparing silicon-calcium-potassium-magnesium fertilizer from molybdenum tailings suffer from problems such as high heavy metal content, large amounts of additives, harsh reaction conditions, and high production costs. Furthermore, molybdenum tailings resources are not being fully utilized.
Heavy metal minerals and quartz in molybdenum tailings are removed by two flotation processes. Combined with high-temperature calcination and flue gas treatment, potassium is recovered through an absorption-separation-crystallization process to prepare high-quality silicon-calcium-potassium-magnesium fertilizer, thereby reducing the heavy metal content and increasing the effective content of nutrients.
The preparation of high-quality silicon-calcium-potassium-magnesium fertilizer with extremely low heavy metal content and high content of effective nutrients has been achieved, meeting national standards, and the heavy metal resources in molybdenum tailings have been fully utilized.
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Figure CN117602969B_ABST