First, the activation of the mine (1) activity Where A—the volume of the active flow belt; Single row Ball Bearings with a convex spherical outer diameter generally used with pressed steel or cast iron housings commonly referred to by their registered trade names of "Y-bearings" or "Self Lubes". Bearing Units,Bearing Pillow Blocks,Bearing Housing Units,Block Bearing Unit Ningbo Ritbearing Imp & Exp Co.,Ltd. , https://www.nbbearing.de
Some scientists recommend using the following formula to determine the activity of a mine. 
V———The total volume of the mine bin.
If there are no arches or nodules at all, then a can reach 100%, but due to the lack of experience in the study of material properties, and the representativeness of the minerals in the prospective study of underground deposits will also be biased, so the mine Barrels or arches often occur during use. Therefore, in order to solve this problem, the mine warehouse should be supplemented with activation measures.
(Ii) the storage bin wall lining for fine ore, the most economical bunker wall lining, scrap iron cement commonly used, but this wear lining after, the surface is very rough, the liner could be replaced by the cast stone; for The ore is small in wear, the inner wall of the mine bin can be coated with epoxy resin; the wall of the lower part of the bucket (steel lining) can also be made elastic.
(3) Pneumatic flow aid
There are basically three types of pneumatic flow-assisted devices, one is a bursting jet type; the other is an air cushion type; the third is a material gasification type.
A commonly used jet type flow aid is a compressed air air gun using a pressure of about 608 kPa (6 atmospheres). The air gun should be installed in the arching area. The direction of the jet should be slightly downward. Such a device is not a wide range of applications, common in the cartridge dry concentrate, bunker powder.
Aydox and Caldox loose material caving machines have extremely high working pressure. The former uses a 6-stage air compressor to increase the air pressure to 85,092 kPa, and the silo collapse pressure ranges from 24,312 to 42,546 kPa; The compacted material is collapsed by utilizing an expansion pressure of 70910 to 131690 kPa generated when carbon dioxide is changed from a liquid state to a gaseous state.
Compressed air is used to form an air cushion to destroy the silo tube or arch. If compressed air with a pressure of 294 kPa is used, when the air cushion area is 1 m 2 , the thrust can reach 294 N (ton), so that the large thrust can destroy the pipe and the arch.
(four) vibrator
There are many types of vibrators attached to the wall of the bucket, and the vibration frequency is generally 900 to 80,000 beats/min, and the amplitude is about 6 mm.
Vibration sources of common vibrators include vibration motors and electromagnets. The vibrator is mounted on the steel plate on the inclined wall of the bucket, and the length of the steel plate is generally not less than 1.5 meters. This kind of vibrator can only work when discharging, otherwise it will make the material in the silo compact and form a blockage. The vibrating device can also be used to make a vibrating and concentrating machine. When the ore powder is processed, a broken arch can be added at the upper end of the concentrating machine, and the device has an excellent arching effect.
The domestic CZ type warehouse wall vibrator (manufactured by Hai'an Building Material Equipment Factory) has a vibration frequency of 3000 beats/min, a vibration force of 500-8000 cows, a power of 30-200 watts, and a wall thickness of 2-12 mm.
There are also a variety of high-frequency vibrators abroad, with vibration times of 10,000 to 20,000 times per minute, such as turbine vibrators, pneumatic roller vibrators, and pneumatic ball vibrators. [next]
(5) Vibrating warehouse buckets use vibration buckets to eliminate the blockage of silos, and the speed of discharge is accelerated for the cement industry. The vibrating bucket and the silo are flexiblely connected, and the receiving port is large, which is close to the bucket opening. This equipment is suitable for various silos with a storage capacity of less than 500 tons.
The vibration frequency of the vibrating bucket is about 1500~1600 times/min. There are two kinds of vibration trajectories, one is perpendicular to the flow channel; the other is that the two vibrators with 180° difference in installation angle will produce a kind of material lifting. And the rotation, the bucket of this structure is called a vortex bucket.
Domestic ZDL push-pull down-frequency electromagnetic vibration funnel (made by Hai'an Building Materials Equipment Factory), its diameter is ф1400 mm, the vibration frequency is 25 times/second, the double amplitude is 0~3 mm, the power is 2×250 watts, the output can be Up to 22 tons / hour.
(6) Water film lubrication and blasting
The water film is used to lubricate the inclined wall of the bin (especially the four corners), so that the coarse (containing mud) ore can be moved. This method is sometimes used in iron ore processing plant ore bin. The water flow rate using this method should not be too large, otherwise it will have adverse effects on the following operations.
Explosive blasting of dead arches in mine bins is also occasionally used, but it is dangerous.
Second, the loading method and loading speed (a) loading method The concentrator's products are generally transported to the product users by rail vehicles or cars. Therefore, the loading method and its speed are of great significance to the economic benefits of railway and road transportation. There are generally two types of loading methods for bulk products in China's concentrators (except for manual loading): one is an elevated mine bin, which is loaded with a dumping valve or a feeder; the other is a grab-type mine bin. Grab crane loading.
(2) The main factors affecting the loading speed of the loading speed are the structure type, length, storage capacity, ore properties and loading equipment of the loading bin.
Features of Bearing Inserts
Ball bearing with spherical outside diameter
A wide range or inch or metric bores locked onto the shaft by means of setscrews, eccentric locking collars or taper bush adapters
Contact seals, flinger seals or triple lip seal configurations
Considered sealed for life in many applications