本文選題：磨料特性 + 磨料氣體射流�。� 參考：《中國安全生產(chǎn)科學(xué)技術(shù)》2017年05期

【摘要】：針對磨料氣體射流,基于氣固兩相流理論分析影響磨料速度的因素,在一定噴嘴結(jié)構(gòu)基礎(chǔ)上,通過實驗研究磨料特性對破煤效果的影響。通過理論分析發(fā)現(xiàn),影響磨料速度的主要因素有磨料密度和磨料粒徑。實驗結(jié)果表明:在射流壓力一定條件下,石英砂、石榴石和棕剛玉3種磨料中棕剛玉破煤深度最大,在80,120,200和280目4種不同目數(shù)磨料中,120目磨料破煤效果最優(yōu)。通過分析磨料特性的影響,得出磨料硬度對破煤的影響最大,其次是磨料密度。開展磨料氣體射流破煤實驗,確定了磨料氣體射流中最優(yōu)射流靶距為70 mm,最佳破煤磨料為120目的棕剛玉磨料。
[Abstract]:Based on the theory of gas-solid two-phase flow, the effect of abrasive characteristics on coal breaking effect was studied through experiments on the basis of a certain nozzle structure in view of abrasive gas jet. Through theoretical analysis, it is found that the main factors affecting abrasive speed are abrasive density and abrasive particle size. The experimental results show that under certain jet pressure, the coal breaking depth of brown corundum is the largest among three kinds of abrasive materials, quartz sand, garnet and brown corundum, and the coal breaking effect of 80120200 and 280 mesh abrasive is the best. By analyzing the influence of abrasive properties, it is concluded that abrasive hardness has the greatest influence on coal breaking, followed by abrasive density. The experiment of coal breaking with abrasive gas jet was carried out. The optimum jet target distance was 70 mm and the best coal breaking abrasive was 120 object brown corundum abrasive in abrasive gas jet.
【作者單位】： 河南省瓦斯地質(zhì)與瓦斯治理重點實驗室(省部共建國家重點實驗室培育基地);河南理工大學(xué)安全科學(xué)與工程學(xué)院;煤炭安全生產(chǎn)河南省協(xié)同創(chuàng)新中心;河南理工大學(xué)安全技術(shù)培訓(xùn)學(xué)院;
【基金】：國家自然科學(xué)基金項目(51404100,51574112) 教育部“創(chuàng)新團(tuán)隊發(fā)展計劃”(IRT_16R22) 河南省科技創(chuàng)新杰出青年(164100510013)
【分類號】：TD712.63

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1 張永光;殷琨;王如生;曹麗娜;彭枧明;;壓縮氣體射流切割破土機(jī)理[J];吉林大學(xué)學(xué)報(地球科學(xué)版);2011年02期

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