高档卷烟纸专用PCC生产过程质量控制技术

摘要

There are five main indexes ,including average particle size and size distribution ,morphology ,free-alkali content, subsidence volume, and degree of whiteness,for the quality of special precipitated calcium carbonate （PCC） used for high-grade cigarette paper.The quality control technology in production process of special PCC for high-grade cigarette paper from the links of relationship between slurry concentration and relative density,carbonization reaction temperature control,kiln gas concentration and flow control, subsidence volume control, raw and cooked slurry aging, excessive carbonization and phosphoric acid neutralization pack-return alkaline phenomenon, and strengthen production process quality management etc.was discussed respectively.%高档卷烟纸专用沉淀碳酸钙(PCC)的质量要求包括平均粒径与粒径分布、晶形、游离碱、沉降体积、白度等5个主要指标.分别从浆液浓度与相对密度的关系、碳化反应温度控制、窑气浓度与流量选择、沉降体积控 制、生浆和熟浆陈化、过度碳化和磷酸中和处理包裹返碱现象、加强生产过程质量管理环节等方面探讨了高档卷烟纸专用PCC的生产过程中的质量控制技术.