Abstract The method of microwave strengthens roasting neutral leaching slag contained germanium is put forward. The dielectric properties and temperature rising behavior of neutral leaching slag in the microwave field are analyzed via experimental and theoretical analysis. The experiment used the dielectric constant test device, the microwave roasting device and the temperature measuring device. The neutral leaching slag can absorb microwave energy and transform into heat energy. The specific surface area of the calcined slag containing the neutral leaching slag is increased by microwave roasting, and the microwave energy can reduce the particle size of the mineral particles to some extent. At the same time, cracks can be seen on the surface of the calcined sand after microwave roasting. The surface of neutral leaching slag roasted by microwave reformed cracks which help to open reaction channels making the oxygen to inside takes part in oxidizing reaction significantly improving germanium oxide reaction conditions, besides increasing the leaching process of the reaction area and increasing the leaching rate. The research on the dielectric constants and temperature characteristics of neutral leaching residue can provide the theoretical and experimental basis for microwave strengthen roasting.

中文翻译：

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锌冶金中性浸出渣在微波场中的介电特性和微波加热行为

摘要 提出了微波强化焙烧中性浸出含锗渣的方法。通过实验和理论分析，分析了中性浸出渣在微波场中的介电特性和升温行为。实验使用介电常数测试装置、微波烘烤装置和温度测量装置。中性浸出渣能吸收微波能并转化为热能。含有中性浸出渣的煅烧渣通过微波焙烧增加了比表面积，微波能在一定程度上减小了矿物颗粒的粒径。同时，微波焙烧后的煅烧砂表面可见裂纹。经微波重整焙烧的中性浸出渣表面裂化，有助于打开反应通道，使氧气进入内部参与氧化反应，显着改善了氧化锗的反应条件，同时增加了反应区的浸出过程，提高了浸出率。中性浸出渣介电常数和温度特性的研究可为微波强化焙烧提供理论和实验依据。