Under the same ore feed condition, granularity is under 200Mesh, the ore takes 85%. It should choose three sets of 20 M2 Disc Filters or choose three sets of 21 M2 Vacuum Ceramic Disc Filters. It fully qualified for the theoretical amount of 0.85 T/m2 • H or the actual requirements of 0.748T/m2 • H.
3.1.1 Operation cost of 20M2 Disc Filters:
1) Power consumption: two sets work and one for spare, the install capacity is 62Kw × 2 = 124Kw Power cost: ￥0.6/Kw•H×124/29.92T=￥2.487/ton
2) Filter cloth: two sets of Disc Filter should use 120 pieces filter cloth, one piece of filter cloth is ￥45, and the average service life is 14 days.
Cost should be: ￥45×120pieces/10053T=￥0.54/ton Total cost: ￥2.487/ton+￥0.54/ton=￥3.027/ton
3.1.2 Operation cost of 21M2 Vacuum Ceramic Disc Filter:
1) Power consumption: two sets work and one for spare, the install capacity is 26Kw×2=56Kw
Power cost: ￥0.6/Kw•H×52Kw/29.92T=￥1.04/ton
2) Consumption of ceramic filter plate：
Two sets of Vacuum Ceramic Disc Filters should use 168 pieces of ceramic filter plate, cost of one piece is ￥1200, average service life is 18 month, process capacity is 29.92T×21×547.5days=393148.8T.
3) Acid consumption: Working Vacuum Ceramic Disc Filter should be stopped and cleaned by nitric acid after every 7 hours.
Amount of nitric acid is 21Kg, concentration should be 40%, the cost is ￥2600/ton.
Total cost: ￥1.04 +￥0.51 +0.26=￥1.81/ton
3.1.3 We can see from the above comparison that Vacuum Ceramic Disc Filter could reduce the cost of processing iron ore concentrate,
￥3.027/T-￥1.81/T=￥1.217/T The annual handling capacity is:
3.2 Cake Moisture: Under the ore feeding conditions described above, the cake moisture filtered by Vacuum Ceramic Disc Filter should be under 7.5%, which is 8.5% by traditional Disc Filter.
Compared between Disc Filter and other filter cloth type vacuum filters, the main change is on the equipment structure. It reduces the area occupied and a slight decrease in cake moisture. But it does not solve the existent drawbacks of the filter cloth-type vacuum filter. Ceramic filtering technology is the world's most advanced filtering technology.
East Anshan Iron and Steel sintering plant took use of Vacuum Ceramic Disc Filter and made significant economic benefits. Three beneficiation plants if Wuhan Iron and Steel Plant are using Vacuum Ceramic Disc Filter to replace the original Disc Filters. Shandong Lunan Mining Company, Baosteel, Westmining, Tangsteel, Shougang, PZHSteel, Ansteel have approved of using VCFs and some more than 30 Chinese national and international companies’ reconstruction projects or new projects are using Vacuum Ceramic Disc Filters. Vacuum Ceramic Disc Filter’s superiority has been widely recognized by the domestic beneficiation plants