本文選題：粗顆粒銅礦石 + 自由沉降速度��； 參考：《昆明理工大學(xué)》2017年碩士論文

【摘要】：單個(gè)粗顆粒礦石在流體中的自由沉降速度和浮游速度直接關(guān)系到深部開采粗顆粒礦石垂直管道水力提升速度的確定,同時(shí),也為后續(xù)研究礦石顆粒群的沉降速度和浮游速度提供一定的理論基礎(chǔ),因此,本文先深入的研究探索單個(gè)粗顆粒礦石在流體中的自由沉降運(yùn)動和浮游運(yùn)動的力學(xué)運(yùn)動特性規(guī)律。本文試驗(yàn)所采用的粗顆粒礦石來自普朗銅礦,銅礦石經(jīng)過粗碎、中碎和細(xì)碎后篩分得到的。本文以試驗(yàn)研究方法為主,首先采用“比重瓶法”對2～4mm、4～5mm和5～6mm三種不同粒徑以及塊狀、柱狀、片狀和錐狀四種不同形狀共360個(gè)粗顆粒銅礦石進(jìn)行密度測定,再使用數(shù)顯游標(biāo)卡尺對所有試驗(yàn)顆粒進(jìn)行三維幾何尺寸進(jìn)行測量,獲得粗顆粒銅礦石的形狀系數(shù)和幾何粒徑,然后對所有試驗(yàn)顆粒進(jìn)行自由沉降試驗(yàn)和浮游試驗(yàn),并利用視頻圖像處理技術(shù)獲得單個(gè)粗顆粒銅礦石的自由沉降速度值和浮游速度值。為了保證試驗(yàn)數(shù)據(jù)的準(zhǔn)確可靠,在對試驗(yàn)數(shù)據(jù)分析處理前,本文首先利用Minitab數(shù)學(xué)統(tǒng)計(jì)軟件對所有的試驗(yàn)數(shù)據(jù)進(jìn)行正態(tài)性檢驗(yàn)和奇異值檢驗(yàn),檢驗(yàn)試驗(yàn)數(shù)據(jù)的標(biāo)準(zhǔn)差是否保證在10%以內(nèi)以及試驗(yàn)數(shù)據(jù)中是否存在奇異值,剔除所有試驗(yàn)數(shù)據(jù)的奇異值外,最終得到287個(gè)精確可靠的粗顆粒銅礦石試驗(yàn)數(shù)據(jù)值。對這287個(gè)不同形狀、不同粒徑和不同密度的粗顆粒銅礦石的自由沉降速度和浮游速度值進(jìn)行數(shù)據(jù)統(tǒng)計(jì)分析,給出了單個(gè)粗顆粒銅礦石的自由沉降速度和浮游速度的經(jīng)驗(yàn)計(jì)算公式。自由沉降速度經(jīng)驗(yàn)計(jì)算公式:浮游速度經(jīng)驗(yàn)計(jì)算公式:最后通過40個(gè)4～5mm和5～6mm不同形狀與不同粒徑的粗顆粒銅礦石自由沉降試驗(yàn)和浮游試驗(yàn),對單個(gè)粗顆粒銅礦石的自由沉降速度和浮游速度的經(jīng)驗(yàn)計(jì)算公式進(jìn)行了驗(yàn)證,證明了本文所給出的單個(gè)粗顆粒銅礦石的自由沉降速度和浮游速度的經(jīng)驗(yàn)計(jì)算公式在實(shí)際工程領(lǐng)域應(yīng)用中是精確可靠的。
[Abstract]:The free settling velocity and floating velocity of a single coarse particle ore in fluid are directly related to the determination of hydraulic lifting speed of vertical pipeline in deep mining coarse-grained ore, at the same time, It also provides a theoretical basis for the further study of the settlement velocity and the floating velocity of the ore particle group. Therefore, in this paper, the characteristics of the free subsidence and the floating motion of a single coarse ore in the fluid are studied in depth. The coarse-grained ore used in this paper comes from Plang Copper Mine, and the copper ore is sifted through coarse, medium and fine crushing. In this paper, the test method is used to measure the density of 360 coarse grained copper ores of four shapes, I. e., 2mm, 4mm, 4mm and 5mm and 5~6mm, and four shapes, I. e., block, columnar, flake and conical, by using the method of "specific gravity bottle", which is mainly used to measure the density of three kinds of coarse grained copper ores. Then the three-dimensional geometric size of all the tested particles is measured by using the digital display caliper to obtain the shape coefficient and geometric particle size of the coarse particle copper ore, and then the free subsidence test and the floating test of all the test particles are carried out. The free subsidence velocity and float velocity of single coarse copper ore were obtained by video image processing. In order to ensure the accuracy and reliability of the test data, before analyzing and processing the test data, this paper first uses Minitab mathematical statistics software to test all the test data for normality test and singular value test. Whether the standard deviation of test data is within 10% or not and whether there are singular values in the test data, 287 accurate and reliable test data of coarse copper ore are obtained after all the singular values of test data are excluded. The free subsidence velocity and floating velocity of these 287 coarse copper ores with different shapes, different particle sizes and different densities are statistically analyzed. The empirical formulas of free subsidence velocity and floating velocity of a single coarse copper ore are given. The empirical formula of free settlement velocity: the empirical formula of floating velocity: finally, through 40 4~5mm and 5~6mm different shapes and different diameter of coarse copper ore free settlement test and floating test, The empirical formulas of free subsidence velocity and floating velocity of a single coarse-grained copper ore are verified. It is proved that the empirical formula of free subsidence velocity and floating velocity of a single coarse-grained copper ore given in this paper is accurate and reliable in practical engineering application.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD923;TD952

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