回转窑
By coating the inner wall of the rotary kiln with a graphite coating, the adhesion problem of lithium iron phosphate precursor during sintering was solved, achieving product quality stability and efficient production. This method is suitable for the preparation of lithium iron phosphate and other inorganic chemical products.
CN224517341UActive Publication Date: 2026-07-17YIBIN TIANYUAN NEW LITHIUM BATTERY CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIBIN TIANYUAN NEW LITHIUM BATTERY CO LTD
- Filing Date
- 2025-10-11
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
When lithium iron phosphate precursors are sintered in a rotary kiln, the carbon source tends to adhere to the kiln wall, leading to inconsistent product quality and affecting lithium battery performance.
Method used
A graphite coating with a thickness of 0.5 mm is applied to the inner walls of the high-temperature and cooling sections of the rotary kiln by spraying or brushing.
Benefits of technology
It effectively prevents carbon sources from adhering to the kiln wall, improves the production efficiency and product quality consistency of lithium iron phosphate, and ensures stable lithium battery performance.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224517341U_ABST
Abstract
本实用新型涉及一种回转窑，尤其是一种用于锂电池正极材料烧结的回转窑，公开了一种回转窑，其包括回转窑窑体，回转窑窑体包括升温段、高温段和冷却段，所述高温段和冷却段的窑体内壁表面均为石墨涂层。石墨涂层的厚度为0.5mm以上，采用喷涂或刷涂的方式形成于该窑体内壁表面，采用本实用新型可以有效地防止磷酸铁锂制备原料中碳源与回转窑内壁发生粘附，且石墨涂层与碳源分解碳的成分一致，也避免了影响锂电池性能的风险，故采用本实用新型有利于进一步提高磷酸铁锂的生产效率和质量，提高产品的批次稳定性，保证产品质量的一致性。
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