CN2761272Y

CN2761272Y - Slag micropowder tube mill

Info

Publication number: CN2761272Y
Application number: CN 200520000041
Authority: CN
Inventors: 朱春启; 蒋哨明
Original assignee: Hefei Cement Research and Design Institute Co Ltd
Current assignee: Hefei Cement Research and Design Institute Co Ltd
Priority date: 2005-01-06
Filing date: 2005-01-06
Publication date: 2006-03-01
Anticipated expiration: 2015-01-06

Abstract

The utility model relates to a tube mill which is used for milling slag micropowers. A double-layer barn partition board provided with an arc type inner screening plant divides the tube mill into two milling barns, wherein a double-ripple lining board which can weaken the ability of an elevator is used in the first barn, and a three-ripple lining board which can improve the ability of the elevator is used in the second barn. A slight segment activation member and an outlet grate board of an overflow type are used in the second section. The slag micropowder tube mill with the structure can adapt to the milling characteristics of the slag to make the outlet grinding fineness degree of the slag micropowder reach more than 450m2/kg. Compared with other slag micropowder milling devices, the utility model has the characteristics of little investment, good milling fineness, energy saving, convenient operation, stable operation, etc.

Description

Drive stream slag micropowder tube mill

Technical field

The utility model relates to a kind of milling equipment, can be widely used in the slag milling occasion of metallurgy, building materials industry, is mainly used in the production slag micropowder.

Background technology

At present, China has ranked among the row of world steel big producing country, annual because of ironmaking produce industrial residue---slag reaches more than 6,000 ten thousand tons, the resource abundance, it is wide to distribute.Because slag has the more calcium component that contains, and has produced some silicate in forming process, aluminate and a large amount of calcic nature of glass have the independently hydraulicity, under the excitation of calcium oxide and calcium sulfate, run into water and just can harden, through being finely ground to 350m ²When/kg specific area was above, replacement cement that can equivalent was good cement or concrete admixture, and to concrete intensity, fragility, creep, stability, durability and the pumping etc. of elastic modelling quantity, volume all have fine modifying function.At home and abroad be widely used.And produce and utilize slag micropowder for the protection environment, save mineral resources, significant, have favorable social and economic benefits.

In China, the equipment of production slag micropowder mainly contains from roller mill system of abroad advancing and homemade closed circuit or open circuit pipe grinding system.By external introduction roller mill system, to invest hugely, general medium-sized and small enterprises are difficult to bear.And present available homemade closed circuit pipe grinding system, because system is furnished with powder concentrator, operation is than the open-circuit grinding system complex, application also is restricted.

Common open circuit pipe grinding system though characteristics simple in structure, easy and simple to handle are arranged, because its liner plate generally adopts staged liner plate or press strip liner plate at cracking cabin, grinds the storehouse and adopts small ripple glaze lining board of globe or flat decorative pattern liner plate.Compartment adopts individual layer or the double-deck partition panel that has lifting blade, and the outlet grate plate of seam for the radial or concentric circles of 8-16mm of combing adopted in outlet.Use the steel ball grinding body of Φ 30-100 millimeter in storehouse in small, broken bits; At the steel ball that grinds storehouse use Φ 25-40 millimeter or the steel section abrasive body of Φ 25-35 millimeter.Slag after the fragmentation of steel ball grinding body, enters grinding storehouse by partition panel at cracking cabin by in the feed arrangement feeding grinding mill barrel, becomes steel section abrasive body to grind through steel ball, is drawn off outside the mill by drawing mechanism again.Because abrasive body and slag particle diameter do not match, partition panel can not be controlled material granularity again, and therefore, mill efficiency is low, power consumption height, slag micropowder quality instability.

Therefore, when stream tube mill grinding slag micropowder was opened in use, grinding machine self structure unreasonable caused the too high and product fineness of energy consumption to be difficult to a series of problems such as control.Therefore on homemade tube mill basis, at the abrasive characteristic of slag, the development stable performance, simple in structure, mill efficiency height, power consumption are low, and to drive stream slag micropowder tube mill very necessary.

The utility model content

The purpose of this utility model is to provide a kind of little at going into ore grinding slag particle degree, and the slag micropowder tube mill is flowed in opening of frangible difficult mill and the demanding new construction of slag micropowder specific area.The stream slag micropowder tube mill of opening of this new construction redesigns by the internal structure to the common tube grinding machine, and the use of abrasive body reconfigured, make the slag micropowder tube mill of this new construction, can grind according to the grinding characters of slag effectively, and the fineness of slag is rationally distributed in mill, thereby improve the mill efficiency of grinding machine, realize improving mill output, reduce the purpose of grinding pow consumption, stabilized product quality.

The utility model is to design according to the material grinding theory, and the material grinding theory shows: the material of different-grain diameter, adopt the abrasive body effect that adapts with it better, for thick material, larger-size abrasive body should be adopted,, the less abrasive body of size should be adopted for thin material.Therefore, for realizing the classification grinding, tube mill of the present utility model at first utilizes the double-layered isolating plate that has the camber screening plant, and the grinding space in the grinding machine is divided into storehouse in small, broken bits and grinds the storehouse, adopts different abrasive bodies in different storehouses.

Because the utility model mainly is to be used for producing slag micropowder, therefore grind at little, the frangible difficulty of mill feed size of slag, the demanding characteristic of the specific area of slag micropowder, tube mill is being divided on the basis of grinding storehouse and storehouse in small, broken bits, steel section and little steel section are made abrasive body in adopting respectively in two storehouses.In order to adapt to the variation of abrasive body,, make the ability in small, broken bits of abrasive body and the output of slag micropowder require to be complementary, and make abrasive body promptly take charge of duty in small, broken bits, the duty of department's corase grind again the liner plate in storehouse in small, broken bits be designed to the to weaken dual damascene liner plate of hoisting power.Partition panel adopts the double-layered isolating plate that includes the camber screening plant, not only work the branch storehouse effect of isolating material and abrasive body, the camber screening plant that it includes also carries out thickness to the material by partition panel to be separated, fines can enter smoothly and grind storehouse continuation grinding, the material-returning device of coarse fodder on the camber sieve returns storehouse in small, broken bits and continues in small, broken bits, corase grind.The camber screening plant is to use miniature steel section to lay a good foundation in the grinding storehouse at this.If it is bigger than normal to enter the material particles that grinds the storehouse, miniature abrasive body is with powerless.And the more medium-sized abrasive body specific area of specific area of the new miniature abrasive body Unit Weight that adopts increases 80 percent, and grainding capacity certainly will be strengthened.And the utility model is in order further to improve the grainding capacity of grinding abrasive body in the storehouse, liner plate in the grinding storehouse is designed to strengthen three ripple liner plates of hoisting power, strengthen the kinetic energy of abrasive body, in grinding the storehouse, all be listed as the activating element that several rows strengthen abrasive body kinetic energy again simultaneously, impel miniature abrasive body in grinding the storehouse, to be able to sufficient movement.

Simultaneously in order to limit the flowing velocity of material in grinding the storehouse, keep reasonably material section ratio, increase the milling time between material and the abrasive body, improve the specific area of product, to export grate plate and be designed to have the annular outlet grate plate of closely knit overflow, to improve grinding efficiency.Qualified material through fully grinding draws off outside the mill through the outlet grate plate.

The utlity model has following obvious advantage: the liner plate in storehouse at first in small, broken bits be designed to the to weaken dual damascene liner plate of hoisting power, the shaped steel section is made abrasive body in the use, can carry out in small, broken bitsly grinding material again to material; Secondly, use the double-layered isolating plate that includes the camber screening plant, make material be able to the thickness separation, utilize miniature abrasive body to lay a good foundation for grinding the storehouse by partition panel; Once more, the liner plate in the grinding storehouse is designed to strengthen three ripple liner plates of hoisting power, has strengthened a band section ability, utilizes little section kinetic energy activator member to strengthen little section kinergety simultaneously; At last, the outlet grate plate designs or has the discharging grate plate of closely knit overflow ring-type, by the restriction material flow, the increment abrasive lapping time, improves the specific area of product and the grinding efficiency of grinding machine.

Description of drawings

Most preferred embodiment of the present utility model can provide in conjunction with the following drawings.

Fig. 1 is the grinding machine complete machine structure schematic diagram of utility model

Fig. 2 is the storehouse in small, broken bits dual damascene lining plate structure schematic diagram of utility model

Fig. 3 is with novel grinding storehouse three ripple lining plate structure schematic diagrames

The overflow type discharging grate plate configuration diagram of Fig. 4 utility model

The specific embodiment

At first consult Fig. 1, the utility model is to grow up on the common basis of driving the stream tube mill.By feed arrangement 1, supporting arrangement 8, grinding mill barrel 4, storehouse in small, broken bits liner plate 12, grind storehouse liner plate 10, contain the double-layered isolating plate 3 of camber screening plant, storehouse in small, broken bits abrasive body 11, grind storehouse abrasive body 9, compositions such as outlet grate plate 6, drawing mechanism 7, to grind interior grinding space by the double-layered isolating plate 3 that includes the camber screening plant is divided into storehouse 2 in small, broken bits and grinds storehouse 5, wherein, the double-layered isolating plate 3 that contains the camber screening plant adopts the described structure of CN85106781.

The abrasive body of the utility model grinding machine uses, determines according to the grinding characters of slag micropowder, and shaped steel section abrasive body in abrasive body 11 employings storehouse 2 in small, broken bits in, middle shaped steel section diameter is 20 to 30 millimeters.Abrasive body 9 in grinding storehouse 5 adopts miniature steel section abrasive body, and the diameter of miniature steel section is 10 to 18 millimeters.

For cooperating the use of above-mentioned abrasive body, grinding machine of the present utility model also designs the lining board of grinder 12 in the storehouse 2 in small, broken bits, be referred to as the dual damascene liner plate, referring to Fig. 2, hoisting power with 12 pairs of abrasive bodies 11 of reduction liner plate, leave the effective coverage of assembling so that abrasive body is promoted, strengthen in small, broken bits, corase grind ability to material.Promptly on every block of liner plate, form 2 crests symmetrically by casting, its crest height is about 28 to 35 millimeters.Same grinding machine of the present utility model also designs the lining board of grinder 10 that grinds in the storehouse 5, is referred to as three ripple liner plates, referring to Fig. 3, to strengthen the hoisting power of 10 pairs of abrasive bodies 9 of liner plate, to increase the space of abrasive body, strengthen grainding capacity, further strengthen grinding effect.Promptly on every block of liner plate, form 3 crests symmetrically by casting, its crest height is about 20 to 25 millimeters.

For increasing the adaptive capacity of the utility model grinding machine to slag, guarantee the fineness of exported product, the utility model has also carried out new design to outlet grate plate 6, adopts the overflow type grate plate, referring to Fig. 4.It promptly is not perforate of outer ring with outlet grate plate 6, inner ring has the seam of combing, the seam width of combing is 4 to 5 millimeters, form an overflow ring, when making the thickness of feed layer of grinding in the storehouse 5 surpass the height of overflow ring, material just can enter discharge end 7, form reasonably material section ratio, increase the time that material contacts with abrasive body,, stablize yield and quality to improve the specific area of slag micropowder.According to the grinding characters of slag, the height of overflow ring accounts for 30 to 40% of grinding machine radius.

During use, slag is gone into mill from feed end 1, enter at first that storehouse 2 in small, broken bits is 11 in small, broken bits via the middle shaped steel section in the storehouse in small, broken bits 2, after the corase grind, move into gradually near the double-layered isolating plate 3, and pass partition panel in succession and enter the camber inner sieving mechanism and sieve, fines sieves to enter and grinds storehouse 5, and coarse fodder then returns storehouse 2 in small, broken bits and continues in small, broken bits, corase grind.Enter into the fines that grinds the storehouse, after miniature abrasive body 9 grinds to accept, enter discharge end 7 through outlet grate plate 6 and draw off outside the mill at last.

Claims

1, a kind of stream slag micropowder tube mill of opening, by feed arrangement (1), supporting arrangement (8), grinding mill barrel (4), storehouse in small, broken bits liner plate (12), grind storehouse liner plate (10), contain the double-layered isolating plate (3) of camber screening plant, storehouse in small, broken bits abrasive body (11), grind storehouse abrasive body (9), outlet grate plate (6), drawing mechanism (7) are formed, and the grinding space in will grinding by double-layered isolating plate (3) is divided into storehouse in small, broken bits (2) and grinds storehouse (5); It is characterized in that, shaped steel section abrasive body during the abrasive body (11) in storehouse in small, broken bits (2) adopts, middle shaped steel section diameter is 20 to 30 millimeters, and the abrasive body (9) in grinding storehouse (5) adopts miniature steel section abrasive body, and the diameter of miniature steel section is 10 to 18 millimeters.

2, tube mill as claimed in claim 1 is characterized in that lining board of grinder (12) is the dual damascene liner plate in storehouse in small, broken bits (2), promptly on every block of liner plate, forms 2 crests symmetrically by casting, and its crest height is 28 to 35 millimeters.

3, tube mill as claimed in claim 1 is characterized in that lining board of grinder (10) is three ripple liner plates in grinding storehouse (5), promptly on every block of liner plate, casts 3 crests symmetrically, and its crest height is 20 to 25 millimeters.

4, tube mill as claimed in claim 1 is characterized in that exporting grate plate (6) and adopts the overflow type grate plate, promptly is the not perforate of outer ring with outlet grate plate (6), inner ring has the seam of combing, the seam width of combing is 4 to 5 millimeters, forms an overflow ring, and the height of overflow ring accounts for 30 to 40% of grinding machine radius.