本文選題：靜電災害　切入點：粉體材料　出處：《南京理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：為了研究粉體工業(yè)生產(chǎn)過程中的靜電危險性,本文通過測定粉體材料的電阻率參數(shù)及影響規(guī)律、設(shè)計粉體物料靜電積累過程模擬實驗的方法對工業(yè)生產(chǎn)過程中的靜電特性進行了研究。首先,通過粉體電阻率測試裝置研究了粒徑對石英砂、RDX、HMX電阻率的影響,分析了不同測試方法及粉體物理參數(shù)等對試驗結(jié)果的影響；然后,通過靜電滑槽實驗研究了樣品質(zhì)量、滑槽長度、滑槽傾斜角度、滑槽材質(zhì)和加料速度對于靜電電荷積累量的影響；通過過篩實驗,研究了樣品質(zhì)量、標準篩孔徑對玉米粉、小麥粉、RDX靜電電荷積累量的影響,研究了含水量對玉米粉、小麥粉靜電電荷積累量的影響,研究了樣品粒徑對RDX、HMX靜電電荷積累量的影響；同時還通過靜電火花感度實驗,分析了超細化處理對RDX靜電火花感度的影響。實驗結(jié)果表明,粉體靜電電荷積累量與樣品質(zhì)量存在線性增長關(guān)系。同時,粉體經(jīng)滑槽摩擦之后的靜電電荷積累量隨著加料速度的增加而減小,隨著滑槽長度的增長而增大。粉體中的水分對摩擦起電靜電電荷積累起到明顯的抑制作用。粉體粒度越小,靜電電荷積累越明顯。不同測試裝置下,粉體材料的電阻率大小并不相同。使用三極圓環(huán)法測得的電阻率值與兩極試驗槽法所得結(jié)果相比小一個數(shù)量級。粉體材料的電阻率隨粉體粒徑的減小有明顯的增大趨勢。RDX經(jīng)超細化處理之后的靜電火花感度較工業(yè)級狀態(tài)下更低。最后,根據(jù)模擬實驗研究的結(jié)果與結(jié)論,本文進一步對粉體工業(yè)生產(chǎn)過程中的靜電帶電體進行了分析,比較了不同靜電放電類型的放電特點與引發(fā)條件,預測了粉體工業(yè)生產(chǎn)中可能出現(xiàn)的靜電危害。針對論文的測試和分析結(jié)果,從減少靜電產(chǎn)生和實現(xiàn)靜電充分消散兩方面,系統(tǒng)地提出了一些用于工業(yè)生產(chǎn)過程中預防靜電危害的對策措施,論文工作、結(jié)論能為粉體工業(yè)生產(chǎn)過程中的靜電危害預防和治理提供參考和幫助。
[Abstract]:In order to study the electrostatic hazard in the process of powder production, the resistivity parameters and the influence law of powder materials were measured. The electrostatic characteristics in industrial production process were studied by designing a simulation experiment of electrostatic accumulation process of powder materials. Firstly, the influence of particle size on the resistivity of quartz sand RDX HMX was studied by means of the powder resistivity test device. The influence of different testing methods and physical parameters of powder on the test results was analyzed, and then the sample quality, chute length and sloping angle of the chute were studied by the electrostatic chute experiment. The effects of sample quality and standard sieve aperture on electrostatic charge accumulation of corn flour and wheat flour RDX were studied by sifting experiments. The effect of sample size on electrostatic charge accumulation of wheat flour was studied, and the effect of superfine treatment on RDX electrostatic spark sensitivity was also analyzed. The electrostatic charge accumulation of powder increases linearly with the sample quality, and the electrostatic charge accumulation decreases with the increase of feeding speed. With the increase of the length of the chute, the water in the powder obviously inhibited the electrostatic charge accumulation. The smaller the particle size of the powder, the more obvious the electrostatic charge accumulation. The resistivity of powder material is not the same. The resistivity value measured by three-pole ring method is one order of magnitude smaller than that obtained by two-pole test tank method. The resistivity of powder material increases obviously with the decrease of powder particle size. The electrostatic spark sensitivity of RDX after ultrafine treatment is lower than that of industrial grade. Finally, Based on the results and conclusions of the simulation experiments, the electrostatic charge in powder industrial production is further analyzed, and the discharge characteristics and initiation conditions of different electrostatic discharge types are compared. The possible electrostatic hazards in powder industrial production are predicted. In view of the test and analysis results of the paper, the static electricity is reduced and the static electricity is fully dissipated. Some countermeasures and measures for the prevention of electrostatic hazards in industrial production are put forward systematically. The work of the paper can provide reference and help for the prevention and treatment of electrostatic hazards in powder industrial production.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB383.3

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本文編號：1569594