一种高纯度六水硝酸镍的连续化结晶工艺
By using iron ion template-guided polymerization and an adsorption medium constructed with an organic-inorganic hybrid framework, combined with a fixed-bed adsorption column to purify the mother liquor, the problem of impurity enrichment in the mother liquor circulation was solved, and the continuous preparation of high-purity nickel nitrate hexahydrate was realized, improving product purity and resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LIAONING JINYI CHEM CO LTD
- Filing Date
- 2026-05-11
- Publication Date
- 2026-07-17
AI Technical Summary
In the current industrial production of nickel nitrate hexahydrate, the recycling of mother liquor leads to the enrichment of iron ions, which affects the purity of the product. Traditional impurity removal methods have problems such as the introduction of new pollution by chemical reagents, equipment blockage, and instability of the crystallization system, making it difficult to achieve the preparation of crystals with high purity and high packing density.
An adsorption medium constructed using iron ion template-guided polymerization and an organic-inorganic hybrid framework is combined with a fixed-bed adsorption column to purify the mother liquor, forming specific recognition sites for selective adsorption of iron ions. By recycling the mother liquor and mixing it with fresh purified liquid, product purity and nickel resource recovery rate are ensured.
It effectively removes iron ions, improves the purity of nickel nitrate hexahydrate, ensures product quality meets standards, achieves near-complete recycling of nickel resources, reduces metal consumption, and improves production efficiency and product physical properties.
Smart Images
Figure CN122144798B_ABST