Study on multi-dimensional structure evolution characteristics of friction heating of conveyor belt
Considered the conveyor belt friction heating igniting combustibles such as pulverized coal and causing catastrophic conveyor belt fire accidents. This paper combines the causes of two major conveyor belt fires, simulates the real conveyor belt friction heating process, reveals the apparent change c...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25009189 |
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| Summary: | Considered the conveyor belt friction heating igniting combustibles such as pulverized coal and causing catastrophic conveyor belt fire accidents. This paper combines the causes of two major conveyor belt fires, simulates the real conveyor belt friction heating process, reveals the apparent change characteristics of conveyor belt friction heating, collects conveyor belt friction debris at different temperatures, and studies its micro morphology, specific surface area, pore structure and surface functional groups. The results indicate that a large amount of high temperature friction debris is produced during the friction heating process of the conveyor belt. The surface is first subjected to thermal shrinkage to inhibit gas penetration, and then a large number of pores with a pore size of about 1 nm are generated to promote a surge in gas production. The adsorption capacities of PVC and PVG conveyor belt increased by 42.16 % and 62.24 %, while both the specific surface area and pore volume exhibited a marked rise. The content of carbon-containing functional groups progressively increases, and the heat release increased. The conveyor belt friction debris has become an important ignition source and combustible material for fires. This research provides an important theoretical and experimental basis for the prevention of conveyor belt fires. |
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| ISSN: | 2214-157X |