Anhui Agricultural Science Bulletin >
2025 , Vol. 31 >Issue 7: 78 - 81
DOI: https://doi.org/10.16377/j.cnki.issn1007-7731.2025.07.019
Analysis of the attribute of non-tobacco substance eliminated by threshing and redrying
Received date: 2025-01-23
Online published: 2025-04-14
To formulate technical regulation for controlling non-tobacco substances during threshing and rebaking, the quantity and category of non-tobacco substances removed by equipment and manual removal in 8 rebaking enterprises were analyzed. The results showed that the proportion of non-tobacco substances weight to the feed volume removed by equipment and manual removal were 7.11×10-6 and 8.09×10-6 respectively. The proportion of non-tobacco substances removed by metal detector, photoelectric decontamination machine, and air separation decontamination machine was relatively high. The proportion of Class Ι non-tobacco substances removed by photoelectric decontamination machine was relatively high in conveyor belt, leaf laying station, tobacco picking station and leaf reheating station. The non-tobacco substances accumulatively removed were mainly Class II non-tobacco substances, accounting for 95.56%. It is advisable to install sand screening machine, air separation decontamination machine, hemp ribbon (roller), metal detector, hemp silk stripping machine and photoelectric decontamination machine, etc. Manual removal of non-tobacco substances stations should be carried out in the tobacco selection, leaf laying, selection, conveyor belt after air separation and impurity removal, conveyor belt after photoelectric impurity removal, conveyor belt for leaf and tobacco stem collection in the leaf beating process, screening and vibrating screen in the leaf beating process, and after leaf reroasting. In summary, the key points of Class Ι of non-tobacco substances control should be placed in the tobacco selection, leaf laying table, metal detection, wind separation and photoelectric impurity removal processes, and the control focus of manual selection of non-tobacco substances should be placed before the leaf beating process.
WANG Suhong , LU Youxiang , ZHOU Liangming , KONG Xiang , HE Jinhua , GAO Ruijiang . Analysis of the attribute of non-tobacco substance eliminated by threshing and redrying[J]. Anhui Agricultural Science Bulletin, 2025 , 31(7) : 78 -81 . DOI: 10.16377/j.cnki.issn1007-7731.2025.07.019
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