Iron ore crushing system before and after improvement of the contrast
Time: 2015-02-04
Shanghai zenith crusher is a professional manufacturer, we not only improve the crushing and screening equipment of high quality and low price for the customer, but also for the customer design and the improvement of crushing process optimum. Below we to an iron ore crushing system as an example, show you a tremendous contrast before and after improvement.
Iron ore crushing system before improvement
1, the feeding part of the problem
Feeding is the first step of the whole iron ore crushing system. Slot type frame is too low, the bottom of the groove of the ore accumulation is serious, but not easy to clean, roller copper sleeve at the bottom of the tank caused the serious wear and tear, and even the chute feeder trough body difficulty moving resistance increases, resulting in a reduction box load increases, and the reduction box base screw loosening, almost every 5, 6 days on the matter of screws or the replacement of damaged screws, time-consuming and laborious. In addition sometimes wear copper sleeve repair, repair time every time in 3 ~ 4h.
2, the broken part of the problem
Fracture is a second iron ore crushing system of key links, ore through jaw crusher again into the cone crusher crushing and sieving fine broken by vibration, jaw crusher will directly influence the service life of cone crusher. Jaw crusher base cement foundation uneven bias, high vibration crusher work, screw fixed base often break, a counterweight wheel serious damage and cracks, bearing cover screws loose, each class matter gland screws, sometimes replacing the pull rod screw welding counterweight wheel, a few hours, the broken staff often suffer unspeakably, bin broken dissatisfaction, serious when must also stop the ball mill.
3, the problem of the sifted fractions
Crushing and screening is the key to ensure granularity. Because shaker spring rod horizontal plane is not the same center, resulting in shaker vibration amplitude, the main beam welding parts often broken weld several times every month, time-consuming and laborious.
The system has been unable to meet the crushing grinding system for iron ore particle size and yield requirements, in order to improve the iron ore processing plant processing capacity, we start from the ore, crushing each procedure in detail to improve the system, improve the iron ore crushing operation rate of the system.
After the ore crushing system transformation
1, to transform part of the mine
First raise the trough feeder position, reduce product tank mine on the resistance, but also easy to clean, making the bottom of the wheel instead of copper nylon jacket sleeve, use a nylon sleeve good self-lubrication, reducing the load on the gear box, adjust the gear box concentric, reinforced base screws, slotted to improve the efficiency of the mining machine. Improved Trough to the electronic control part of the feeder, the installation of the drive, adjustable speed to mine, to facilitate protection of jaw crusher normal work load.
2, the broken part of the transformation
According hardness characteristics of iron ore, the jaw crusher specifications into 400 * 250 * 1200 600 jaw crusher, also from the 37kW motor replaced 18.5kW, the crusher inlet installation of a Secondly, when the jaw crusher for re-leveling, replacement of moving jaw assembly, leveling cement foundation; homemade small grate, grate some fine ore ore directly into the chute to the belt conveyor, improved cutting crusher irrigation method using epoxy resin, the use of short-term power-crusher vibrating itself by its own weight while leveling screws to replace the base rod, re-tighten the crusher as a whole.
3, part of the transformation of screening
More shaker change the main beam, I-beam main beam into 300mm 240mm, the main beam welding without original embedded parts, but made an 8 plywood, use 16 screws 20mm diameter rod firmly girder fixed, in order to offset the damping pad also readjust the position of the center of the horizontal spring rod vibration sieve to make a smooth vibration shaker after work to improve economic stability through 3 above work, and now the ore crushing system is stable, the monthly maintenance can save a lot of time, each class broken shortened time from 10h 7h, reduce the usage of equipment to improve the operation rate, monthly and more broken 1500t iron ore, saves energy, produces nearly 10 economic million.
Transformation of the broken system is not the end, after the crushing system there will be more problems, there are some problems can not be solved now, that all we need to continue to improve crushing technology and accumulated experience.