最大限度地提高磨机的效率外文文献翻译.docx

1、最大限度地提高磨机的效率外文文献翻译附录AMaximize the efficiency of the millQingfei Xiaoa, * , Huaibin Kanga , Bo Lia, Chunmei LuobAASRI Procedia 7 (2014) 14 19Abstract:Optimized study to the ratio of primeval ball loading in 4.0 6.0m overflow ball Mill of Yingezhuang gold mine, the research results showed that it pert

2、ains to low hard and brittle ores, the accurate size ball should be used rather than big size ball due to mainly fines mineral are produced in the process of comminution. As the yield of intermediate granularity between 8 to 0.45 mm reach up to 50.34%,the intermediate particles should be strengthene

3、d in grinding, -400 mesh content is about 40% and -10um content accounts for a quarter of the grind products what showed that particles size are not satisfied and unfavorable to subsequent separation. The optimum scheme of primeval ball loading is that: 70: 60: 50 40= 15: 15: 30: 40 for 4.0 6.0m ove

4、rflow ball mill, the separate sizes contents is 64.19% between 0.150.019mm which increasing by 19.14% compare with 44.78% and the mill -200mesh utilization coefficient increasing 12.6 percents compare with 0.14 about original program when 4.0 6.0m overflow ball mill work itself alone, in addition, t

5、he mill -200mesh utilization coefficient increasing 11.71 percents compare with 0.1503 about original program when 4.0 6.0m overflow ball mill and 3.6 6.0m grate ball mill are working together.Keywords:Primeval ball loading; overflow ball mill; size ratio; optimize1. IntroductionThe designed daily p

6、rocessing capacity is about 4700 ton and gold deposit belongs to the type of quartz vein of Yingezhuang Gold Mine. As the ores are in short supply, the 3.6 6.0m grate ball mill on and off, nevertheless, 4.0 6.0m overflow ball mill working all along, The underflow particles returns to regrinding and

7、the overflow particles enter into flotation subsequent after hydrocyclone about one stage grinding products, grinding flow diagram of Yingezhuang Gold Min as the figure 1 shows. 4.0 6.0m overflow ball mill is closed-circuit grinding, it need to not only own return oversize, but also the return overs

8、ize from 3.6 6.0m grate ball mill, due to the 3.6 6.0m grate ball mill work uncertain which bring many inconveniences for4.0 6.0m overflow ball mill. The Plant scheme of primeval ball loading is that: 100:80: 60=20:40:40 for 4.0 6.0m overflow ball mill, coarse particles (0.15mm) is a larger, the yie

9、ld of - 200 mesh is between 18% to 20% and the size composition is irrational in grinding products. This paper aims to optimize the Ratio of Primeval Loading Ball and the size composition of grinding products. 1. Grinding flow diagram of Yingezhuang gold mineHigh efficient energy-saving ball mill is

10、 an eternal topic. Especially the shaft kiln cement enterprises, with comprehensive management of technological progress, constantly improve the shaft kiln clinker output table; cross century after the implementation of the new standards of cement, cement fineness, put forward higher requirements th

11、an the surface area and the particle group has practical Chengdu. The significance of how to improve the mill output.2. Work efficiency and energy consumptionIn the production process of cement mill, is one of the key equipment for preparation of cement mill, electricity consumption accounted for th

12、e quality of cement comprehensive power consumption 60%70%. raw mill determines and affects the technical parameters of kiln, cement mill if the configuration is reasonable, can make up for some defects of cement clinker. Therefore, high quality, high quality, high production. Of cement enterprises

13、to achieve high yield, low consumption is of great significance. So, how to realize the high quality and high yield of cement mill? The author after many years study and practice, understanding the following points:Reduce the feeding size of a few years ago, cement grinding size has not been cement

14、enterprises attention. In recent years, cement grinding process has the cement grinding size was promoted to an important position, more crushing and less grinding point of view has been recognized by the industry. More crushing and less grinding that is the original to enter m mill 30m particle siz

15、e to 3m m. At this stage, the production of crusher manufacturers have introduced high Xichui crusher, sieving roll crusher, roller press and so on. The enterprise actual, the original jaw crusher for superfine hammer type screening crusher, grinding the size from the original 30m to M 5m m below, s

16、o as to improve the mill output. After that, the author uses roller press to reduce the particle size to less than 2mm and increase the output by more than 50%Optimization of grinding process of cement grinding process is divided into open and closed system. The former unit started production of cem

17、ent are used in open systems, cement fineness is not easy to control fluctuations. Therefore, the unit invested hundreds of thousands of yuan, the open circuit grinding system instead of a closed circuit grinding system is additionally provided with a rotor powder selecting efficiency an efficient u

18、pdate machine, bag filter, so as to improve the specific surface area of cement, increase the cement strength and good effect. The author is now using a roller unit, classifier, 3.8 * 13m cement mill combined grinding system, cement grinding production from 6070t /h, increase to 100120t /hControl of

19、 feeding water and temperature control in grinding of comprehensive water is less than 1.5%, is to ensure the basic requirements of high quality and high yield. If the mill in grinding the water is too high, will cause the roller extrusion cake too real, not easy to break up; at the same time, easy

20、to cause the mill ventilation, blocked diaphragms, grate, paste ball, paste lining, dust condensation. The author unit of the mixed material into the plant water, materials in the production process of drying and strict control, seriously examine, and strictly control the feeding temperature within

21、the process requirement, to ensure the normal operation of the mill.Control in grinding grindability of materials grinding degree of difficulty from the material itself, C2S and C4A in clinker high grinding is difficult. The author tries to ensure the production unit C3A and high C3S clinker in the

22、ingredients, to improve the grinding performance of the material. According to the authors experience, one is the clinker and slag separate grinding slag powder, preparation of a certain amount of cement production during the winter by separate grinding system, in the production of cement during the

23、 proportion of adding, so as to improve the grindability of slag; two is the incorporation of basic approach and fineness of cement fly ash mixture, in order to improve the grindability of mixed material. That is to say, in order to improve the flour mill In order to improve the grinding efficiency,

24、 the original fuel must be optimized to improve the grindability of the grinding material.Good control of the ventilation ventilation within the mill, have a significant effect on the yield and quality. One of its functions is to fine powder discharge grinding body, so as not to affect the grinding

25、efficiency, forming grinding; the two is to take lower grinding temperature in the grinding heat, reduce the dehydration of gypsum paste paste, and ball. Blocking plate, blocking partition board and so on. Circle flow should be controlled at 0.81.0m /s wind speed grinding, grinding open flow should

26、be controlled in 1.01.2m /s. In daily production, should be fully aware of the importance of mill ventilation, attention inside the mill diaphragm plate screen slot size, in order to facilitate ventilation inside the mill. At the same time we should do a good job of blocking the air leakage. Airtigh

27、t work. The author uses strong ventilation and bag filter, which has received better resultsTimely adjustment of grinding media grading, in the equipment configuration allows, appropriately increase the ball section load, beneficial to improve the mill output. In addition, add the grinding body shou

28、ld be based on the actual feeding size, grindability factor and lining plate and the partition plate form, position, and mill power. Speed, grinding process (closed or open), a comprehensive analysis of positions determined. For larger particle size, poor grindability of materials should be used in

29、large diameter, and ball diameter should be smaller.In the production process should adhere to the regular production of the grinding body. The grinding body gradually consumed, the weight, volume, shape change, so that the gradation change. In order to ensure that the mill in the best working condi

30、tion, should be added. The specifications and quantity of the grinding body of the grinding body, as the main body material grinding mill. The yield and quality of mill operation time. According to the actual grinding grinding consumption per ton of product, determine the number of grinding body, a

31、steel ball to add daily warehouse 1, two warehouse and Sancang should be 7 days or 10 days plus 1 times. The grinding body can be used as grinding media grading fine-tuning, such as grinding high tone, coarse fineness When the small size should be added to the grinding body; grinding fineness and lo

32、w noise, stable, large specifications should be added to the grinding body. In addition, in the daily production can also be added to the grinding body according to the change of the mill current change and mill output quality. Should regularly check the positions in the grinding body breakage. When

33、 the ball more damage when the clearance should be re graded. Cleaning period should be considered material and grinding. Under normal circumstances, the general front chamber for 3 6 months, if not out of the tail warehouse section of ball grinding or blockage of sieve grate hole, generally only added