The use of carbon fibre (CF)-reinforced plastics has grown significantly in recent years, and new areas of application have been and are being developed. As a result, the amount of non-recyclable waste containing CF is also rising. There are currently no treatment methods for this type of waste. Within this project different approaches for the treatment of waste containing CF were investigated. Main subject of the research project were large-scale investigations on treatment possibilities and limits of waste containing CF in high temperature processes, with focus on the investigation of process-specific residues and possible fibre emission. The results showed that the two conventional thermal waste treatment concepts with grate and rotary kiln firing systems are not suitable for a complete oxidation of CFs due to the insufficient process conditions (temperature and dwell time). The CFs were mainly discharged via the bottom ash/slag. Due to the partial decomposition during thermal treatment, World Health Organization (WHO) fibres occurred in low concentrations. The tests run in the cement kiln plant have shown the necessity of comminution for waste containing CF. With respect to the short testing times and moderate quantities of inserted CF, a final evaluation of the suitability of this disposal path was not possible. The use of specially processed waste containing CF (carbon-fibre-reinforced plastic (CFRP) pellets) as a carbon substitute in calcium carbide production led to high carbon conversion rates. In the unburned furnace dust, which is marketed as a by-product of the process, CFs in relevant quantities could be detected.

近年来，碳纤维 (CF) 增强塑料的使用显着增长，并且已经并且正在开发新的应用领域。因此，含有 CF 的不可回收垃圾的数量也在增加。目前没有针对此类废物的处理方法。在该项目中，研究了处理含 CF 废物的不同方法。该研究项目的主要主题是对高温过程中含 CF 废物的处理可能性和限制进行大规模调查，重点是调查特定过程的残留物和可能的纤维排放。结果表明，由于工艺条件（温度和停留时间）不足，采用炉排和回转窑燃烧系统的两种传统热废物处理概念不适用于 CF 的完全氧化。CF 主要通过底灰/炉渣排放。由于热处理过程中的部分分解，世界卫生组织 (WHO) 纤维的浓度很低。在水泥窑厂进行的试验表明粉碎含 CF 废物的必要性。关于较短的测试时间和中等数量的插入 CF，无法对该处理路径的适用性进行最终评估。在电石生产中使用含有 CF（碳纤维增强塑料 (CFRP) 颗粒）的经过特殊处理的废料作为碳替代品可提高碳转化率。在作为过程副产品销售的未燃烧炉尘中，可以检测到相关数量的 CF。