本文選題：煉焦煤　切入點：煤泥水　出處：《安徽理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：我國優(yōu)質煉焦煤資源較稀缺,為了能夠有效利用煤炭資源,國家要求特殊和稀缺煤種全部入洗,經洗選加工的特殊和稀缺煤優(yōu)先用于冶金、材料和化工等行業(yè),并限制將其直接燃燒,避免造成稀缺資源的浪費。因此,以氣煤和1/3焦煤等煤種為主的淮南潘謝礦區(qū)必將對以動力煤為主的產品進行結構調整。 本論文主要對淮南潘謝礦區(qū)即將興建的中央型煉焦煤選煤廠煤泥水部分進行設備選型和工藝研究。對潘謝礦區(qū)中央型煉焦煤選煤廠將要入洗的B組7、8、11槽和C組13槽四槽原煤進行采樣、制樣,并進行原煤的篩分浮沉試驗,浮選分步釋放試驗,泥化試驗,煤的礦物質種類分析,以掌握潘謝礦區(qū)煤質特性以及煤泥水的相關性質。一方面通過對淮南及周邊地區(qū)煉焦煤選煤廠煤泥水處理主要設備的性能進行對比,選取分選、脫水和回收效率高的設備,使設備能夠適應潘謝礦區(qū)煤質在一定范圍內變化而不影響煤泥水的有效處理。另一方面對已得到的潘謝礦區(qū)的資料進行分析,以及對淮南及周邊地區(qū)煉焦煤選煤廠的調研資料進行總結的基礎上,制定出一套適合潘謝礦區(qū)中央型煉焦煤選煤廠煤泥水處理的工藝流程,并對工藝流程進行評述。 在試驗、調研以及充分論證對比的基礎上,最終選取了FJC型煤用噴射式浮選機、斜管濃縮機、LZW型沉降過濾式離心脫水機和快開式隔膜壓濾機四種煤泥水處理的主要設備。制定了“2+2”模式的煤泥水處理工藝流程,即煤泥兩級浮選、精煤泥兩段脫水回收和尾煤泥水兩級濃縮、兩段回收工藝流程。
[Abstract]:China's high-quality coking coal resources are relatively scarce. In order to make effective use of coal resources, the state requires all kinds of special and scarce coal to be washed in, and the special and scarce coal processed by washing and processing is first used in metallurgical, material and chemical industries, Therefore, Huainan Panxie mining area, which is mainly composed of gas coal and 1/3 coking coal, is bound to adjust the structure of the products which are dominated by thermal coal. This paper mainly studies the equipment selection and technology of the slurry part of the central coking coal preparation plant to be built in Panxie mining area, Huainan. Group B, No. 811 trough and group C, which will be washed in the central coking coal preparation plant of Panxie mining area, are studied in this paper. 13 grooves four grooves of raw coal sampling, Sample preparation, sieving and floatation test of raw coal, flotation step by step release test, mudding test, analysis of mineral species of coal, In order to master the characteristics of coal quality and the related properties of slime water in Panxie mining area. On the one hand, by comparing the performance of the main equipment of coal slurry treatment in Huainan and surrounding coking coal preparation plants, the equipment with high efficiency of separation, dehydration and recovery is selected. So that the equipment can adapt to the change of coal quality within a certain range without affecting the effective treatment of coal slime water. On the other hand, the obtained data of Panze mining area are analyzed. On the basis of summing up the investigation data of coking coal preparation plant in Huainan and its surrounding areas, a set of process flow suitable for coal slurry treatment of central coking coal preparation plant in Panxie mining area is worked out, and the process flow is reviewed. On the basis of experiment, investigation and full demonstration and comparison, the FJC type coal injection flotation machine was finally selected. The main equipment for the treatment of four kinds of slime water is the inclined tube concentrator, the LZW type settling filter centrifugal dehydrator and the fast opening diaphragm filter. The process flow of "22" mode coal slime treatment is established, that is, the two-stage flotation of the slime. Two-stage dewatering and recovery of fine coal slime and two-stage concentration of tail slime water, two-stage recovery process.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD94

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