## 1 Introduction  
Aluminum dress with high nitrogen concentration refers to aluminum dress with high aluminum nitride content. High-temperature melting operations are essential in processes such as remelting, casting and recycling of metallic aluminum. In the production process, some aluminum will react with nitrogen to generate a large amount of aluminum nitride [1; 2; 3]. Such aluminum dress generally has a lower fluorine content, which meets the relevant criteria for leaching toxicity. Therefore, the main harmful component of this part of aluminum dress is aluminum nitride [4; 5]. The _Directory of National Hazardous Wastes_ (Version 2021) distinguishes between the hazardous properties of different processes of aluminum. Among them, salt slag and aluminum dress generated during the processing and recycling of recycled aluminum and aluminum products are considered to have reactive hazardous properties [6]. At present, the research on the comprehensive utilization of aluminum dress mainly focuses on building materials, refractory materials and other inorganic materials. The processing methods can be divided into wet method and fire method [7]. Fire method uses high temperature for harmless treatment or resource utilization, while wet method generally achieves its purpose with the help of some solvents. In a related study on wet method processing, [PERSON] [8] developed a flocculant prepared from aluminum dress, polyaluminumiron silicate (PAFSC). With the fast sedimentation rate, the water purification effect of homemade flocculant is significantly better than that of flocculant poly aluminum chloride (PAC) sold on the market. [PERSON] et al. [9] used alkali sintering to convert aluminum in aluminum dress into sodium aluminate, and then prepared hydrogen alumina by hydrolysis to be used as an industrial raw material. [PERSON] et al. [10] prepared hydrogen by hydrolyzing highly active aluminum dress. In addition, an important byproduct, AlOOH, is obtained. Therefore, aluminum dress hydrogen production technology has great theoretical value. There are relatively many studies on fire method. [PERSON] et al. [11] studied in detail the process of preparing premelted calcium aluminate slag for molten steel refining from recycled aluminum dress. [PERSON] et al. [12] studied replacing part of calcined alumina with aluminum dress. In this process, aluminum dress can be directly used in the preparation of refractory materials without calcination. It should be noted that the mass fraction of aluminum dress that can be directly added is less than 5%, which contributes relatively little to the total utilization. [PERSON] et al. [13] studied the feasibility of NaOH solution extraction to recover aluminum from secondary aluminum dress and the subsequent sintering of the extraction residue to prepare MgAl\({}_{2}\)O\({}_{4}\) spinel. [PERSON] et al. [14] investigated the production of pure spinel (MgAl\({}_{2}\)O\({}_{4}\)) powder from waste aluminum dress by a leaching-precipitation-calcination process. [PERSON] et al. [15] used aluminum dress, aluminum sludge and alumina as raw materials to prepare calcium aluminate cement, with various performance indicators reaching relevant international standards. [PERSON] et al. [16] studied the possibility of mixing fly ash (FA) and red mud (RM) with sawdust in different proportions to prepare thermal insulation bricks. According to the results, these bricks are suitable for thermal insulation in environments with medium and low temperatures (up to 600 \({}^{\circ}\)C). [PERSON] et al. [17, 18] used plasma spray technology to make aluminum dress into a novel coating, which not only enhanced the strength of the base material, but also treated the aluminum dress cleanly. The above research shows that the comprehensive utilization of aluminum dress has broad prospects. However, the research studies that consume a large amount of aluminum dross meshes all use the fire method, which requires huge equipment costs and energy consumption, which is difficult to be fully promoted.