硬质合金喷雾干燥回收料的使用研究

Study on the Use of Cemented Carbide Spray Drying and Recycling Materials

以WC-6%Co牌号为研究对象,对混合料生产过程中喷雾干燥产生的回收料进行了取样对比分析,并对它们压制、烧结成合金,分析它们的物理性能及微观组织结构,根据分析结果,制定合适的收尘料、清塔料处理工艺,对加与不加回收料的混合料压制、烧结成合金,对比分析它们的物理性能及微观组织结构。结果表明:收尘料、清塔料成份一致;由于收尘料的形成原因、清塔料的收集过程原因,它们的烧损比粒料要低,即收尘料、清塔料中的成型剂、表面活性剂较粒料要少,其中清塔料的成型剂、表面活性剂损失严重;由于颗粒之间会产生静电排斥及空间斥力位能,清塔料含较多的微细颗粒;按制定的回收料处理工艺,加与不加回收料生产的YG6牌号混合料,其物理性能及常规微观组织结构基本一致。

In this paper, the WC-6 %Co brand as the research object, the mixture of recycled spray drying to produce production during the process of sampling analysis, and they pressed, sintered alloy, analysis of their physical properties and micro structure, according to the results of the a- nalysis, to develop appropriate dust collecting material, tower cleaning material treatment process, with and without the recycling material mixture compaction, sintering alloy, compara- tive analysis of their physical properties and microstructure. The results show that： the dust cleaning tower material, material collection process~ due to reasons, collecting material tower cleaning materials, their loss is lower than that of granular material, cleaning, dust collection tower material forming agent, surface active agent, which is less clear, tower material molding agent, surfactant losses; due to electrostatic repulsion and steric repulsive energy will be between the particles, fine particles tower cleaning material contains more; according to the recycling process to develop, with and without recovery of YG6 grade mixture production, its physical properties and micro structure is basically the same.