Rank ball mill
Enter the picture, get off at Changshu Road Station of Metro Line 7, walk to middle Huaihai Road bus station of Changshu Road, take No.26 bus, pass 1 stop, reach Fumin Road Station of Changle Road, walk about 120 meters, and reach Shanghai Post and Telecommunications Hospital
the physical properties such as density, void ratio, shape, mechanical strength of large and small phases of the material change not only e to the dense rolling phase particles, but also the chemical and physicochemical properties such as chemical composition, recibility, expansibility, high temperature rection softening, low temperature rection softening and melting, The metallurgical properties of the material are improved. The basic task of pelletizing is not only to use concentrate and fine ore to make spherical smelting raw materials, but also to proce metallized pellets for direct rection and to apply them to comprehensive utilization and recovery of useful metals
I think the most important thing is that with a certain strength, it will not crush in the blast furnace, so that there are voids, recing gas can pass through, and heat can convection and radiation to the interior. Therefore, the pellet should have enough compressive strength.
1. Using high grade concentrate powder, the grade of acid oxidized pellet can reach 68% and SiO2 is 1% ～ 2%
2. There are no large pores in sinter, and all pores exist in the form of micro pores, which is beneficial to gas-solid rection
3. The content of FeO is low (generally about 1%), and the mineral is mainly Fe2O3 with good recibility
4. Good cold strength, each ball can withstand 2800-3600n (300-400kg · f) pressure, uniform particle size and good transportation performance
5. The natural pile angle is smaller than 24 °～ twenty-seven °， In the blast furnace, the burden is easy to roll to the center of the furnace
6. Sulfur content is very low, because 95-99% of sulfur in raw materials can be removed by roasting in strong oxidizing atmosphere
7. It has the disadvantage of rection expansion, and abnormal expansion occurs under the catalysis of K2O and Na2O< However, it is still better than that of natural rich lump ore, and it is still the best burden for high basicity sinter in charge structure
you can search on the Internet, choose the right manufacturers for field visits, and compare goods among three manufacturers
if you have any other questions, you can continue to ask me
I hope it will be helpful to you.
2. If it's the State Central Hospital, you can continue to take No.6 bus from the Central Hospital, go through an Enshi square, a Zhongda Imperial City, and then go to the State Central Hospital (it's not the State Central Hospital, it's called a community, forget it)
3. There are two state central hospitals. If it's the one in the center of the city, the central hospital will get off and transfer to No.2 bus in the same direction, passing through the Central Hospital in Enshi square, the power company's Shi square, Wuyang Bazhou Central Hospital (destination)
No.4 and No.6 bus will go their separate ways with No.2 bus when they arrive at the power company, So if you want to go to the State Central Hospital in the city, please transfer to No. 2 at the stations in front of the power company