Suppression effect and mechanism of melamine polyphosphate /zinc borate composite suppressant on aluminum dust explosion

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL Powder Technology Pub Date : 2025-02-13 DOI:10.1016/j.powtec.2025.120777

Shuqi Zhang , Jiangping Zhao , Yong Yang , YaChao Wang , Kainan Yu

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Abstract

To mitigate potential hazards of aluminum (Al) powder explosions, a green suppressant called MPP/ZB has been successfully produced using mechano-chemical technology. The suppressant consists of melamine polyphosphate (MPP) and zinc borate (ZB). This study examined the suppression effect of various mass concentrations of the composite suppressant on Al dust explosion. The results indicate that, with the addition of 100 wt% of MPP/ZB to the 300 g/m³ aluminum powder, P_max and K_st decreased from 0.701 MPa and 8.7 MPa·m/s to 0.13 MPa and 0.2 MPa·m/s, respectively, effectively suppressing the explosions. Moreover, TG-DSC analysis of the suppressant and XPS/SEM examination of the explosion residues further revealed that the addition of ZB enhances the inhibitory effect of MPP on Al dust explosions. The H₂O, Zn (OH)₂ and ZnO produced by ZB decomposition reduce the concentration of NH₃ generated by MPP decomposition, which may have a combustion promoting effect on Al dust.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.