CN201384967Y

CN201384967Y - Micro-oxygenation efficient ball mill

Info

Publication number: CN201384967Y
Application number: CN200920151292U
Authority: CN
Inventors: 石勇; 段建鑫; 倪鹏; 石萌; 苗永春
Original assignee: LAIWU GOLDEN STONE SPECIAL ALLOY MATERIAL COOPERATION; LAIWU GOLDEN STONE P/M COOPERATION
Current assignee: LAIWU GOLDEN STONE SPECIAL ALLOY MATERIAL COOPERATION; LAIWU GOLDEN STONE P/M COOPERATION
Priority date: 2009-04-20
Filing date: 2009-04-20
Publication date: 2010-01-20
Anticipated expiration: 2019-04-20

Abstract

A special micro-oxygenation efficient ball mill used for efficiently producing iron steel including sponge iron with good plasticity comprises a ball mill, a water cooling device and a sealing air circulating device, wherein a casing of the ball mill is supported and fixed via a bearing, an electric motor is connected with a pinion wheel via a speed reducer, and the pinion wheel is meshed with a gearwheel to drive the ball mill to rotate; a classificator mounted at an outlet of the ball mill is connected with a collector via a pipeline of a casing of the classificator; the collector is connected with a circulating line via a filtering cloth bag and an induced-draft fan; and the outlet of the circulating line is connected to a feed port. The micro-oxygenation efficient ball mill adopts the water cooling device for temperature reduction to avoid oxidation, the classificator efficiently controls such performances of the product as granularity, and extracting materials for the induced-draft fan are produced via the cloth bag collector, thereby reducing the heavy milling and improving the yield; and moreover, the totally closed production ensures environmental protection and economical efficiency.

Description

The low-level oxidation efficient ball mill

Technical field

The utility model relates to a kind of low-level oxidation efficient ball mill, and this kind equipment is to adopt the water cooling cooling, and blower fan extracts the mode of powder and processes, and is applicable to that the processing sponge iron becomes the product of certain particle size, the high micro-oxidation of efficient, the advantage that the feature of environmental protection is good.

Background technology

At present, in the known powder metallurgy industry, the following several respects equipment of the main employing of sponge iron processing: the one, vibrating mill, because it adopts driven by motor, the spring vibration mode, amplitude is little, activity ratio is low, so yield poorly, and the high shortcoming of fault rate, the feature of environmental protection is poor simultaneously, owing to do not have better process equipment at present, most of manufacturer adopts this kind equipment, and they are under the 100 order product situations of production, under the equal energy consumption, specific yield is at 250-350Kg/h; The 2nd, the ball mill that adopts processing ore to use, built-in steel ball is in the rotation process, rely on the strike of ball and the rubbing action of ball and material, its efficient is higher, and fault rate is low, but indivedual up to now producer adopts, mainly be in its use, product processing oxidation is serious, and the running of mill height speed contact a large amount of heats of generation between ball and the ball, can't in time get rid of, heat accumulation, temperature raises, for products such as production ores, influence less, but the iron powder influence high for production purity is bigger, and in addition, cylindrical shell is long because mill body diameter is big for this equipment, it is difficult that institute adds the control of labor and materials discharging speed, product granularity is difficult to control, causes can't large-scale popularization using at present, and it produces 100 order products, under the equal energy consumption, specific yield is at 500-650Kg/h; The 3rd, adopt Raymond mill, it mainly is to rely on bull ring and the rubbing action of mill body, grinds iron powder, active force is single, but the energy consumption height, domestic have only part producer to use; The 4th, high speed disintegrator, it mainly relies on high-pressure blast to drive raw material, makes its high-speed motion, rubs between bump liner plate and powder and the powder, reaches the purpose of pulverizing, and active force is more single equally, more is applicable to the work brittleness raw material, and advantage is that oxidation is light, but yields poorly.Mainly be the good equipment of above this plasticity of several processing sponge iron at present.But there is the shortcoming of energy consumption height, environmental protection difference in above equipment.

The utility model content

The purpose of this utility model is to provide that a kind of production efficiency height, energy consumption are low, low-level oxidation, the feature of environmental protection are good, is suitable for processing the special-purpose low-level oxidation efficient ball mill of the sponge iron that has certain plasticity.

The purpose of this utility model is achieved in that a kind of low-level oxidation efficient ball mill, is made up of ball mill, water-cooling apparatus, classifier air-introduced machine, sealing wind recycle unit; Wherein ball mill is by the fixing ball mill housing of bearings, and motor is connected to pinion by decelerator, rotates thereby pinion and gear wheel engagement drive ball mill; The clasfficiator that is installed in ball mill outlet is connected with gatherer by the pipeline of clasfficiator housing; Gatherer is connected with circulating line through air-introduced machine by filtering cloth bag, and the outlet of circulating line is connected to feeding mouth.

-described clasfficiator is equipped with the classification frequency modulation motor.

-described water-cooling apparatus is installed in the shower of the side that the ball mill housing rotates.

For reaching above purpose, the technical solution adopted in the present invention is: make full use of the high efficiency operation principle of ball mill, solve its processing oxidation and granularity shortcoming rambunctious, adopt complete equipments such as water-cooled, wind suction, cloth bag gatherer, its feature is as follows:

A, water cooling mode: employing length is that 5.7m, diameter are the ball mill of 1.5m, and on its basis, along its rotation direction, ball and material are in half part of side, adds two row's showers, and the overall flow rate of water is 5m ³/ h, cooling water fall on the housing, along with rotation, take lower housing portion to, cool off that they are most, and the ball mill housing bottom is built cistern by laying bricks or stones, water is collected recycle.Cooling water exchanges the heat energy that produces in the mechanical milling process fast, reduce the heat of ball mill inside, reduce internal temperature, because ball mill is in operation process, ball is rotation direction half componental movement in mill chamber with material, the heat that produces is delivered to housing fast, and this part is lowered the temperature in cooling water all the time, thereby internal temperature is reduced;

B, the selection by winnowing gatherer: ball mill inner chamber filling diameter is 10cm, 7cm, the 5cm steel ball, its blend proportion is 1: 1: 1, it runs up in the process, ball and ball impact smash sponge iron particle, and ball contacts abrasive grains with material, and then refinement, feed the impeller grader of 40cm in its exit portion, adjust the powder degree of the rotating speed control sucking-off of impeller, it is 0.01 micron cloth bag gatherer that impeller grader end connects the aperture, adopt the blower fan of high pressure 30Kw to extract, ball-milling medium and add in switching process, the meet the requirements pulverized powder of granularity of labor and materials and in time extract, not overground, the output height, the powder that extracts is collected through gatherer, has improved crushing efficiency, has solved ball milling granularity problem rambunctious;

C, circulated air effect: high pressure positive blower outlet siphunculus is received the ball milling feeding mouth, reach the classified device sucking-off of product of granularity requirements, after selection by winnowing gatherer cloth bag is collected, after used wind is lowered the temperature through this process, feed from the ball mill inlet again, form closed circulation, part does not have the fine powder of collection to reclaim once more on the one hand, on the other hand its shuttling movement, heats a large amount of in the mill chamber is taken away, effectively reduce internal temperature, the hydrous water cool equipment is avoided the product oxidation.

D, the feature of environmental protection: complete equipment is in full closeding state, and have feeding mouth only and be in half and open wide, but because its afterbody exhausting, excessive part dust then sucks in the ball mill, and the working site environment is good.

The beneficial effects of the utility model are: relevant device on year-on-year basis, the product that working plasticity is good as the sponge iron type, under the equal energy consumption, its output be existing relevant device 2-3 doubly; There is not problem of oxidation substantially in the product of being produced; Product granularity can be controlled, and is highly suitable for producing the product of different grain size requirement; Good work environment, basic no dust pollution.

Description of drawings

Fig. 1: low-level oxidation efficient ball mill machine structural representation

Among the figure, 1, feeding mouth; 2, circulating line; 3, bearings; 4, the ball mill housing; 5, the water cooling shower; 6, gear wheel; 7, bearings; 8, pinion; 9, decelerator; 10, motor; 11, clasfficiator; 12, the clasfficiator housing; 13, the clasfficiator frequency modulation motor; 14, gatherer; 15, air-introduced machine; 16, filter cloth bag.

The specific embodiment:

With reference to accompanying drawing 1, reinforced by feeding mouth 1 adding, drive by motor 10, regulate the speed, be transferred to pinion 8 engagement gear wheels 6 and drive the ball mill high speed rotating through

decelerator

9,3,7 bearings ball mill housings 4 wherein, add pan feeding through ball milling, along rotation direction under inertia, ball and material are stacked into housing bottom one side, cool water shower pipe 5 is this position heat of fast Absorption then, reduces internal temperature; By adjusting clasfficiator frequency modulation motor 13 its rotating speeds of control, thereby control clasfficiator 11, control air-introduced machine 15 sucking-off powder degree, classified device housing 12 pipelines of the powder of sucking-off arrive gatherer 14, cloth bag 16 filters after filtration, the product iron powder is leached fall the collection of gatherer bottom, and air-introduced machine is with the fine powder that contains in air quantity and the air inducing, deliver to ball mill feeding mouth 1 by circulating line 2, institute's pan feeding and excessive dust are blasted in the ball mill.

Claims

1. a low-level oxidation efficient ball mill is characterized in that: be made up of ball mill, water-cooling apparatus, sealing wind recycle unit; Wherein ball mill is by the fixing ball mill housing of bearings, and motor is connected to pinion by decelerator, rotates thereby pinion and gear wheel engagement drive ball mill; The clasfficiator that is installed in ball mill outlet is connected with gatherer by the pipeline of clasfficiator housing; Gatherer is connected with circulating line through air-introduced machine by filtering cloth bag, and the outlet of circulating line is connected to feeding mouth.

2. low-level oxidation efficient ball mill according to claim 1 is characterized in that: described clasfficiator is equipped with the classification frequency modulation motor.

3. low-level oxidation efficient ball mill according to claim 1 is characterized in that: described water-cooling apparatus is mounted in the shower of the side that the ball mill housing rotates.