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rotary ball mill

china rotary ball mill, rotary ball mill manufacturers

china rotary ball mill, rotary ball mill manufacturers

China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: grinding mill, ball mill, grinding machine. Here we are going to show you some of the process equipments for sale that featured by our reliable suppliers and manufacturers, such as Rotary Ball Mill. We will do everything we can just to keep every buyer updated with this highly competitive industry & factory and its latest trends. Whether you are for group or individual sourcing, we will provide you with the latest technology and the comprehensive data of Chinese suppliers like Rotary Ball Mill factory list to enhance your sourcing performance in the business line of manufacturing & processing machinery.

rotary ball mill - sundfelt, emil g

rotary ball mill - sundfelt, emil g

: A primary object of this invention is to provide a rotary ball mill for use in carrying out a wet grinding process, said ball mill having means for providing a continuous recirculation of coarser material around the balls of the mill until said coarser material is thoroughly ground and pulverized and said ball mill also providing for the self classification and removal of the more finely pulverized material.

Another object is to provide a rotary ball mill for wet grinding having a recirculation means for continuously recirculating coarse material around the balls until said coarse material is thoroughly ground and at the same time having a zone in which the water is quiet and from which the finely ground material may be taken off.

In the dry grinding of rocks, ores and like material in ball mills and like machines, means have been provided for re-circulating the dry material but these means have been of such form as to produce agitation of the material and to 05 provide for a separation of the finer from the coarser material by agitation and blowing action.

Another object of the invention is to provide a ball mill having an upper grinding ring and a lower grinding ring between which grinding balls 35: are operatively disposed, said upper grinding ring having vanes operatively connected therewith in suitable positions to maintain a continuous recirculation of water and material which is being ground around the balls and between the two grinding rings when the upper grinding ring is rotated.

The above mentioned general objects of my invention, together with others inherent in the same, are attained by the device illustrated in the following drawings, the same being a preferred exemplary form of embodiment of my invention, throughout which drawings like reference numerals indicate like parts: Figure 1 is a vertical mid-section, with parts in Selevation, of a rotary ball mill constructed in accordance with this invention; Fig. 2 is a horizontal sectional view of the same, taken substantially on broken line 2-2 of .5; Fig. 1, and showing a rotor and other parts in plan; Fig. 3 is a detached view of the rotor in elevation; Fig. 4 is a bottom plan view of the rotor; o. Fig. 5 is a fragmentary sectional view of the rotor taken substantially on broken line 5-5 of Fig. 2; and Fig. 6 is a view similar to Fig. 2 showing a modified form of amalgamation plate.

The shell 12 constitutes the side walls of a receptacle for the reception of water and material to be ground. A centrally positioned frame member 13 is secured by screw means 14 to the base portion 10.

A lower grinding ring 15 is supported within a conical seat I6, provided for it in the base portion 10. Preferably interfitting notch and lug means I? are provided in the seat 16, and periphery of the ring 15, as shown at the left in Fig. 1, to prevent rotation of the ring within the seat 16.

Also a rubber gasket 9 is preferably provided to prevent grit from entering between the ring 15 and seat S1. The lower grinding ring 15 has an annular race 18 of arcuate cross section in the upper portion thereof for the reception of balls 19. An upper driven grinding ring 20 has an annular ball race 21, of arcuate cross section provided in the lower peripheral portion thereof and resting on the balls 19. Enough balls !9 are provided so that they fill the two races and are substantially in contact with each other, as shown in Fig. 2. Ample room for the circulation of water and material between said balls is provided, due to the curvature of the balls. Also, the upper and lower ball races 18 and 21 are spaced far enough apart to allow for a circulation of water and material therebetween. 35.

The upper grinding ring 20 is provided with a hub portion 22, and a plurality of vanes 23 are provided between the hub portion 22 and the rim of said grinding ring. These vanes are pitched, as best shown in Fig. 5, so that they will scoop up the water and material as the grinding ring 20 rotates and direct the same upwardly ard outwardly. The result of this action of the vanes is that the water and material are circulated around and between the balls 1d, in the direction indicated by the arrows in Fig. 1, to provide for the re-grinding of the material until it is completely pulverized. After the solid material has been reduced to a very fine state it will no longer re-circulate but will rise to the top of the water and may be taken off by take-off means hereinafter described.

The lower portion of the central frame member 13 is of inverted dish shape and is provided with a closure member 24, which has a central bearing hub 25. The closure member 24 cooperates with the lower portion of the frame member 13I to provide an oil tight gear receptacle 26, wherein a bevel gear 27 and a driving pinion 28 may operate in a bath of oil.. A tubular shaft 29 is journaled in the bearing hub 25, and in a similar bearing hub 30 provided in central frame member 13. The bevel gear 27 is keyed to this tubular shaft 29 by key means 31. Preferably antifriction bushings 32, of bronze or like material, are provided in the bearing hubs 22 and 30 for the tubular shaft 29 and washers 33 of like material are provided at the location of the ends of the hub of the bevel gear 27 and at the upper end of the hub 30. Preferably oil seal means 34 is provided at the lower end of the bearing hub 25.

A sleeve 35 fits over the upper end portion of the tubular shaft 29, and is connected with the said shaft by key or spline means 36, so that it is rotatable with said shaft 29. The lower end portion of this sleeve 35 has a disc shaped flange 37 thereon. The flange 37 is provided with a downwardly projecting annular guard member 38, which extends over the upper end portion of the hub 30 and is of larger diameter than said hub 30, to leave between said hub 30 and said guard member 38 a space for the reception of packing means 39, by which the entrance of grit and water into the bearing structure is prevented.

An upwardly projecting annular guard member 40 on the frame member 13, extends upwardly around the guard member 38 in spaced relation therefrom and terminates in slightly spaced relation from the flange 37. The peripheral portion of the flange 37 is curved downwardly over the upper end portion of the guard member 40.

A water inlet pipe 41 is connected by a passage.way 42, with the space within the upwardly projecting guard member 40. When the machine is in operation a constant supply of clean water is admitted through this water inlet pipe 41 and caused to flow upwardly and discharge radially outward through the narrow and restricted space between the flange 37 and upwardly projecting guard member 40 to prevent any grit from gaining entrance to the bearings and to supply water as needed to the interior of the ball mill.

The hub 22 of the upper grinding ring 20 is preferably provided with an octagonalpassageway 43, which fits over a correspondingly shaped portion 44 on the sleeve 35, whereby the upper grinding ring 20 will be rotated by rotation of the sleeve 35 and at the same time will be free to move up and down on the sleeve 35.

For the purpose of exerting a resilient downward pressure on the upper grinding ring 20, I provide a tubular sleeve 45, which rests on the upper end of the hub 22, and has a cap 46 in the upper end thereof. A rod 47, having nuts 48, on the upper end thereof extends downwardly through the cap 46 and through the tubular shaft 29. A disc 49 is provided on the lower end portion of the rod 47 and retained thereon by nuts 50. A compression spring 51 has one end portion supported on the disc 49 and the other end portion supported by a ball bearing 52, provided in the lower portion of the hub 25 of the closure member 24. The resilient force of the spring 51 is transmitted through the rod 47 and sleeve 45 and exerted as a downward pressure on the upper grinding ring 20.

The pinion 28 meshes with the bevel gear 27 and said pinion is secured to a shaft 53 which is journaled in a bearing 54 and may be driven by any suitable means not shown. The upper end portion of the hub 25 has an annular recess 55 for the purpose of catching oil which is splashed by the gears 27 and 28 and vane members 56 are secured to the bevel gear 27 and positioned within the annular recess 55, so as to pick up oil and direct the same upwardly through holes 57 in the bevel gear 27, to insure ample lubrication for the bearing in the hub 30 of frame member 13.

Suitable oil passageways are provided to insure proper lubrication of all bearings. The construction of this gear box and bearing means together with the provision of the packing 40 and the provision of means for introducing clean water around the bearing to keep out the grit makes it safe and practical to position the driving means for this machine below the machine without danger that said driving means will be damaged by grit from the machine.

Preferably an annular gutter 58 is provided in the upper portion of the base member 10 to catch precious metals and a draw-off conduit 59 connects with said gutter. Also preferably a mat 60, of suitable material to retain precious metals is provided in the bottom portion of the machine. Also amalgam plate means 61 is preferably provided inside of the shell 12. An overflow or takeoff pipe 62 has an upwardly directed open end portion S3 positioned above the upper end portion of the rod 47 substantially axially of the machine. This overflow pipe 62 extends outwardly through one side of the shell 12. Two coaxially positioned cylindrical baffle members 64 and 65 are adjustably supported in the upper portion of the shell 12 coaxially of said shell. The take-off opening 63 of the pipe $2 is positioned inside of the baffle member 64. The baffle member 64 is substantially smaller in diameter than the baffle member 65. The two baffle members are formed of perforated sheet metal and they serve to break up waves and ripples and currents and agitation in the water and insure substantially still water at the location of the take-off 63. This is desirable to prevent loss of values and said baffle members 64 and 65 insure still water at the location of the take-off, even though the vanes 23 impart much turbulence to the water in the lower portion of the machine. The baffle members 64 and 65. may be adjustably supported by any suitable means, such as chains 66, which adjustably engage with bars 67 that extend across the top of the shell 12. The stillness of the water at the location of the take-off opening 63 may be varied to a certain extent by vertically adjusting the baffles 64 and 65 in the shell 12. One or more chutes 68 for the inlet of solid matter may be provided at the upper end of the shell 12.

In Fig. 6 a modified form of amalgamation plate is shown. Here the plates 69 replace the plates 61 of the other figures. These plates 69 are vertically disposed and project inwardly. The values are scrubbed and cleaned by the action of the grinding balls 19, and while they are thus clean. they are thrown outwardly and by impact, contact the amalgamation plate O6. The action of the amalgamation plate is thus enhanced.

In the operation of this rotary ball mill, the shell 12 is filled with water up to substantially the level of the take-off 63. nnwer is. analied to the shaft 53 to rotate the upper grinding ring 20 and solid matter to be ground is introduced through the chutes 68. The solid matter settles to the bottom and passes between the ball- 19 by which it is crushed and ground. The vanes 23 continuously scoop up the water and solid nmrtter and direct the same upwardly and outwardly, thus keeping up a continuous circulation of the solid matter between the balls 19 and grinding rings 5 and 29 so that this solid matter is rapidly and efficiently ground. As this material is ground the lighter material, when finely pulverized, finds its way to the top of the water and is taken off through the pipe 62. The heavier material and precious metals remain in the lower portion of the machine or are caught by amalgam plate means 6 1. The action of the vanes 23 tends to throw the material out against this amalgam plate means, thereby bringing the values in contact with said amalgam plate means 61 or 69 and increasing the efficiency of the machine.

Obviously, changes may be made in the form, dimension and arrangement of the parts of my invention, without departing from the principle thereof, the above setting forth only a preferred form of embodiment.

I claim: 1. A device of the class described, comprising a cylindrical receptacle for water and solids to be ground; a lower grinding ring positioned substantially axially of said receptacle and providing the lower part of an annular ball race; an upper grinding ring positioned axially of said lower grinding ring and providing the upper part of an annular ball race; a plurality of grinding balls disposed in the annular ball race between said two grinding rings; a driven shaft positioned axially of said grinding rings; a plurality of spaced apart vane members adapted to operate below the surface of the water and solids to be ground and extending above said grinding balls and connecting the upper grinding ring with said driven shaft, said vane members providing passageways for water and solids therethrough and said vane members extending upwardly and outwardly urging the water and solids in a circular path which is upwardly and through the said passageways, thence outwardly toward the walls of the receptacle, whereby gravity separation occurs and the finely ground light solids will rise in the receptacle and coarser heavy solids will de4scend and move downwardly and between the grinding balls and the rings and will then be reground and pass upwardly and through the vanes as described; and take off means operatively positioned in the upper portion of the re50 ceptacle to remove the finely ground lighter rising solids.

2. A device of the class described, comprising a cylindrical receptacle for water and solids to be ground; a lower grinding ring positioned sub55 stantially axially of said receptacle and providing the lower part of an annular ball race; an upper grinding ring positioned axially of said lower grinding ring and providing the upper part of an annular ball race; a plurality of grinding 60 balls disposed in the annular ball race between said two grinding rings; a driven shaft positioned axially of said grinding rings; a plurality of spaced apart vane members adapted to operate below the surface of the water and solids to be 65 ground and extending above said grinding balls and connecting the upper grinding ring with said driven shaft, said vane members providing passageways for water and solids therethrough and said vane members extending upwardly and 70 outwardly urging the water and solids in a circular path which is upwardly and through the said passageways, thence outwardly toward the walls of the receptacle, whereby gravity separation occurs and the finely ground light solids will rise in the receptacle and coarser heavy solids will descend and move downwardly and between the grinding balls and the rings and will then be reground and pass upwardly and through the vanes as described; baffle means disposed in the water and solids in the upper portion of said receptacle and removed from the circular path of the water and solids providing a non-agitated and quiet take-off area; and take off conduit means fo water and finely ground light solids.

S3. A device of the class described, comprising a cylindrical receptacle for water and solids to be ground; a lower grinding ring positioned substantially axially of said receptacle and providing the lower part of an annular ball race; an upper grinding ring positioned axially of said lower grinding ring and providing the upper part of an annular ball race; a plurality of grinding balls disposed in the annular ball race between said two grinding rings; a driven shaft positioned axially of said grinding rings; a plurality of spaced apart vane members adapted to operate below the surface of the water and solids to be ground and extending above said grinding balls and connecting the upper grinding ring with said driven shaft, said vane members providing passageways for water and solids therethrough and said vane members extending upwardly and outwardly urging the water and solids in a circular path which is upwardly and through the said passageways, thence outwardly toward the walls of the receptacle, whereby gravity separation occurs and the finely ground light solids will rise in the receptacle and coarser heavy solids will descend and move downwardly and between the grinding balls and the rings and will then be reground and pass upwardly and through the vanes as described; amalgamation plates positioned adjacent the periphery of said receptacle and tangentially disposed as respects the circular path of said water and solids in said receptacle; and take off means operatively positioned in the upper portion of the receptacle to remove finely ground lighter rising solids.

4. A device of the class described, comprising a cylindrical receptacle for water and solids to be ground; a lower grinding ring positioned substantially axially of said receptacle and providing the lower part of an annular ball race; an upper grinding ring positioned axially of 50 said lower grinding ring and providing the upper part of an annular ball race; a plurality of grinding balls disposed in the annular ball race between said two grinding rings; a driven shaft positioned axially of said grinding rings; a plu- '0 rality of spaced apart vane members adapted to operate below the surface of the water and solids to be ground and connecting the upper grinding ring with said driven shaft, said vane members providing passageways for water and solids therethrough and said vane members urging the water and solids to be ground in a circular path, which is between said grinding balls and said grinding rings and above said grinding balls, whereby gravity separation occurs and the finely ground light solids will rise in the receptacle and coarser heavy solids will descend and move downwardly and between the grinding balls and the rings and will then be reground and recirculated as described; and take off means operatively posi- 70 tioned in the upper portion of the receptacle to remove the finely ground lighter rising solids.

ball mill|rotary kiln|cement plant equipment|jiangsu

ball mill|rotary kiln|cement plant equipment|jiangsu

Jiangsu Pengfei Group mainly engages in the design, manufacturing, selling of complete set of equipment for the building material machinery, the environmental protection machinery, the metallurgical machinery and the chemical machinery industry, supplying the complete set of machinery and electrical equipment, installation and debugging, as well as contracting the turn-key basis project and the re...

china vertical mill, ball mill, rotary kiln manufacturers

china vertical mill, ball mill, rotary kiln manufacturers

Tongli Heavy Machinery Co.,Ltd established in 1958 year, is a member of the China Building Material Machinery Association, a leading enterprise of China Cement Machinery, on the vendor of designated manufacturers for coal industry mechanical and electrical equipment, ISO9001:2008 accredited and accredited as a high-tech & new technology enterprise of Zhejiang Province, national designated"defend the contract heavy credit enterprise", modern enterprise of national top ten cement grinding system of technologies and equipment, at the top of cement equipment manufacturing in Zhejiang Province.

After more than 50 years of continuous development, the company already has a group of experienced technical experts and high-quality management personnel, a first-class science and technology research and development center and engineering service team.

ISO9001:2008 accredited and accredited as a high-tech & new technology enterprise of Zhejiang Province, national designated"defend the contract heavy credit enterprise", modern enterprise of national top ten cement grinding system of technologies and equipment, at the top of cement equipment manufacturing in Zhejiang Province.

At the same time, the company has its own intellectual property rights in the slag vertical mill, raw vertical mill, cement vertical mill, coal vertical mill and rotary kiln, cement mill, wind sweep coal mill, dryer and other cement machinery series host equipment.

During the warranty period, two times a month to guide the user to maintain and maintain the product, and to send a special person for the maintenance and maintenance of the product on the fifteen day before the end of the warranty period.

We are convinced that the customer has given the opportunity for the development of the same force, the interests of the customers in the first place is the purpose of the same force and heavy machine service, so that the customer satisfaction is our eternal pursuit!

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