不同筛缝弧形筛对粗精煤泥分级回收效果的试验研究

发布时间：2019-03-11 15:06

【摘要】：目前我国选煤厂重选系统的分选下限已经达到0.125mmm,将0.125mm粒级有效地分级回收已经引起了业内人士的高度关注。因此研究新型筛缝为0.20mm、0.15mm弧形筛分级回收这部分合格的粗精煤泥是十分有意义的,而且这一研究在国内尚属首次。本文以工艺性能、筛分性能和脱水性能为评价方向,对新型筛缝为0.20mm和国产筛缝为0.40mm弧形筛进行了应用效果的研究,又对新型筛缝为0.20mm和0.15mm精煤泥弧形筛进行了不同击打强度下应用效果的研究,以探讨新型精煤泥弧形筛在何种击打强度下具有最佳的技术经济效益。针对新型精煤泥弧形筛在凤凰台选煤厂的应用,本文对粗精煤泥回收工艺也进行了试验与研究。试验结果表明：在凤凰台选煤厂,筛缝为0.20mm精煤泥弧形筛综合性能明显优于筛缝为0.40mm的,且0.20mm精煤泥弧形筛在弱击打条件下具有最佳的技术经济效益,同时应该注意相关工艺设备的参数调节。筛缝为0.20mm的精煤泥弧形筛在凤凰台选煤厂的成功应用,为有效分级回收重选系统的合格粗精煤泥开启了新的篇章。
[Abstract]:At present, the separation and lower limit of the gravity separation system of the coal preparation plant of China has reached 0.125mm, and the effective grading and recovery of the 0.125 mm size fraction has aroused the high attention of the industry. Therefore, it is of great significance to study a new type of coarse and fine coal slime with a new size of 0.20 mm and 0.15 mm, and it is the first time in China. In this paper, the research on the application effect of the new type of screen joint of 0.20 mm and 0.15 mm fine coal slurry with the thickness of 0.20 mm and 0.15 mm is studied in this paper based on the evaluation direction of the process performance, the screening performance and the dewatering performance, and the application effect of the new type of screen joint of 0.20 mm and 0.15 mm fine coal slurry is studied. In order to study the best technical and economic benefits of the new type of fine-coal-mud arc-screen with the impact strength. In view of the application of the new type of fine coal slime arc screen in Fenghuangtai Coal Preparation Plant, this paper also has carried on the experiment and research on the coarse and fine coal slime recovery process. The experimental results show that, in the Fenghuangtai coal preparation plant, the comprehensive performance of the screen seam is 0.20mm, the comprehensive performance of the arc-shaped sieve is better than that of the screen slot, and the 0.20-mm fine coal-mud arc-shaped sieve has the best technical and economic benefit under the condition of weak beating, and the parameter adjustment of the relevant process equipment should be noted. The successful application of an arc-shaped screen of the fine coal slime with the size of 0.20 mm in the Fenghuangtai Coal Preparation Plant has opened a new chapter for the qualified coarse and fine coal slime of the effective grading recovery and gravity separation system.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD94

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