發(fā)布時間：2018-06-13 14:00

  本文選題：陶瓷研磨體 + 金屬研磨體��； 參考：《濟南大學(xué)》2017年碩士論文

【摘要】：我國是世界水泥生產(chǎn)大國,水泥工業(yè)的能源、資源消耗巨大。而在水泥生產(chǎn)過程,簡單的劃分可以表述為“兩磨一燒”,即磨生料、燒熟料、磨水泥。粉磨作業(yè)是水泥生產(chǎn)過程中耗電最高的一個環(huán)節(jié),每生產(chǎn)一噸水泥,大約需要粉磨多種物料3~4t,能耗占整個水泥生產(chǎn)工藝能耗的60%—70%,其中水泥粉磨過程中的電耗所占比例高達(dá)2/3,水泥生產(chǎn)過程的粉磨設(shè)備—球磨機,長期使用金屬研磨體作為粉磨介質(zhì),一直存在著磨耗高和效率低的問題,如何提高水泥粉磨效率,降低單位電耗一直是水泥廠關(guān)注的問題。因此通過減少粉磨過程的能耗從而達(dá)到降低生產(chǎn)成本進(jìn)而增強企業(yè)競爭力是未來水泥生產(chǎn)發(fā)展的方向。不僅在水泥行業(yè),在礦渣粉磨中也存在同樣的能耗問題,減少粉磨能耗也是礦渣粉磨發(fā)展的一個未來方向。隨著陶瓷工業(yè)的發(fā)展,低密度高耐磨的陶瓷研磨體為降低粉磨能耗和減少金屬研磨體損耗提供了一種途徑。本論文將通過使用新型陶瓷研磨體作為粉磨介質(zhì)進(jìn)行粉磨試驗,選用水泥熟料和礦渣作為粉磨原料,模擬大磨研磨倉級配(使用粉磨級配參考實際生產(chǎn)級配設(shè)定),進(jìn)行陶瓷研磨體和金屬研磨體之間的對比試驗,陶瓷球和陶瓷段之間的對比試驗,探究陶瓷研磨體在水泥熟料和礦渣中的粉磨效果和節(jié)電效果,研究陶瓷研磨體對水泥和礦渣性能的影響,通過不同組級配研磨體的粉磨實驗,找出合理的粉磨級配,通過顆粒粒度分布、力學(xué)性能、工作性能等檢測方法,分析不同組粉磨效果,根據(jù)粉磨效果不同,優(yōu)化調(diào)整研磨體的級配,達(dá)到降低粉磨能耗和提高粉磨效果的目的。并且充分考慮添加助磨劑后與粉磨物料(礦渣和熟料)性能的影響,通過設(shè)計粉磨試驗,全面的得出陶瓷研磨體在水泥熟料和礦渣中的粉磨效果。并進(jìn)行陶瓷研磨體工廠大磨粉磨試驗,進(jìn)行實際生產(chǎn),對陶瓷研磨體的實際應(yīng)用情況進(jìn)行分析,得到以下主要研究結(jié)果:1.通過對比陶瓷研磨體(球)和金屬研磨體粉磨效果,使用陶瓷研磨體后,水泥熟料45μm篩余和80μm篩余降低,比表面積提高,3d強度和28d強度最高提升到27.6MPa和52.1MPa;礦渣45μm篩余和80μm篩余降低,比表面積提高,7d活性和28d活性最高提升到88%和102%;使用陶瓷研磨體專用助磨劑進(jìn)行試驗后,各項數(shù)據(jù)也得到提高,說明陶瓷球適用于水泥熟料和礦渣的粉磨。2.通過對比陶瓷球和陶瓷柱粉磨效果,陶瓷柱粉磨的水泥熟料和礦渣45μm篩余和80μm篩余、比表面積、水泥3d強度和28d強度、礦粉7d和28d活性數(shù)據(jù)好于陶瓷球粉磨的數(shù)據(jù),說明陶瓷柱的粉磨效果好于陶瓷球的粉磨效果。3.通過使用新型陶瓷研磨段進(jìn)行試驗,粉磨水泥和熟料效果達(dá)到最佳,設(shè)計不同級配粉磨結(jié)果分析發(fā)現(xiàn),粒徑小的陶瓷研磨體含量多的粉磨效果最佳,細(xì)度、比表面積、強度數(shù)據(jù)更好,因為陶瓷研磨體破碎能力較弱,研磨體能力較強,小粒徑研磨體更能發(fā)揮其粉磨效果,在設(shè)計級配時采用粒徑小比重多,粒徑大比重少的原則。進(jìn)行節(jié)電試驗比較,陶瓷研磨體相比金屬研磨體節(jié)電率為35.5%,證明了陶瓷研磨體具有節(jié)電效果。4.通過工廠大磨粉磨礦渣試驗,更換陶瓷研磨體后,各項數(shù)據(jù)符合控制指標(biāo),優(yōu)于金屬研磨體粉磨效果,使用半年后,效率和性能穩(wěn)定,節(jié)電效果明顯。
[Abstract]:China is a great country in the world of cement production. The energy consumption of cement industry is huge. In the process of cement production, the simple division can be expressed as "two grinding and one burning", that is, grinding raw material, burning clinker and grinding cement. The grinding operation is the highest electricity consumption in the process of cement production, and every ton of cement is needed to grinding a variety of materials about 3 ~4t, energy consumption accounts for 60% to 70% of the energy consumption of the whole cement production process, of which the proportion of electricity consumption in the process of cement grinding is up to 2/3, the grinding machine in the process of cement production, the ball mill, the long use of metal grinding body as the grinding medium, has always existed the problem of high abrasion and low efficiency, how to improve the efficiency of cement grinding and reduce the unit electricity. Consumption has always been a concern of cement plant. Therefore, it is the direction of future development of cement production by reducing the energy consumption of the grinding process to reduce the cost of production and enhance the competitiveness of the enterprises. Not only in the cement industry, there is the same energy consumption problem in the slag grinding, but also to reduce the energy consumption of the powder mill is also a future of the development of slag grinding. With the development of ceramic industry, the ceramic grinding body with low density and high wear resistance provides a way to reduce the energy consumption of grinding and reduce the loss of metal grinding body. In this paper, a new ceramic grinding body is used as a grinding medium for grinding test. Cement clinker and slag are used as grinding materials to simulate the gradation of large grinding mill. The contrast test between the ceramic lapping body and the metal lapping body, the contrast test between the ceramic ball and the ceramic segment, is carried out with the comparison test between the ceramic ball and the ceramic segment, and the effect of the grinding effect and the electricity saving effect of the ceramic grinding body in the cement clinker and the slag is investigated. The grinding experiment of the same group gradation grinding body to find the reasonable grinding gradation, through the particle size distribution, mechanical properties, working performance and other testing methods, analysis the different groups of grinding effect, according to the different grinding effect, optimize the gradation of grinding body, to reduce the grinding energy consumption and improve the grinding effect. And fully consider the addition of help. The effect of grinding agent on the properties of grinding material (slag and clinker), through the design of grinding test, the grinding effect of the ceramic grinding body in cement clinker and slag is completely obtained. The actual production is carried out and the actual application of the ceramic grinding body is analyzed. The following main research has been obtained. Results: 1. by comparing the grinding effect of ceramic lapping body (ball) and metal grinding body, after the use of ceramic grinding body, the cement clinker 45 mu m sieve residual and 80 mu m sieve residue decreased, the specific surface area increased, the 3D strength and the 28d strength increased to the highest 27.6MPa and 52.1MPa; the slag 45 mu m sieves and 80 mu m sieves were reduced, the specific surface area was increased, 7d activity and 28d activity were highest. Up to 88% and 102%, after the use of special grinding aids for ceramic abrasives, the data also improved, indicating that the grinding effect of ceramic balls for cement clinker and slag grinding.2. by comparing ceramic balls and ceramic columns, cement clinker and slag of 45 mu m sieves and 80 mu m sieves with ceramic columns, specific surface area, cement 3D strength and 28d The strength, mineral powder 7d and 28d activity data are better than the data of ceramic ball grinding, indicating that the grinding effect of the ceramic column is better than the grinding effect of the ceramic ball,.3. is tested by using the new ceramic grinding section, the effect of grinding cement and clinker is best. The grinding effect is the best, the fineness, the surface area and the strength data are better. Because the ceramic grinding body is weak in breaking ability and the abrasive ability is strong, the small particle size lapping body can give full play to its grinding effect. In the design gradation, the small specific proportion of the particle size and the large proportion of the particle size are less. Compared with the metal grinding body, the ceramic grinding body is compared with the metal grinding body. The electric ratio is 35.5%, which proves that the ceramic grinding body has the power saving effect.4. through the mill grinding slag test. After replacing the ceramic abrasive, the data conforms to the control index, which is superior to the grinding effect of the metal grinding body. After half a year, the efficiency and performance are stable and the electricity saving effect is obvious.
【學(xué)位授予單位】：濟南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TQ172.63

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本文編號：2014255