CN106622593B - A kind of milling method of bone coal navajoite - Google Patents
A kind of milling method of bone coal navajoite Download PDFInfo
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- CN106622593B CN106622593B CN201610979300.8A CN201610979300A CN106622593B CN 106622593 B CN106622593 B CN 106622593B CN 201610979300 A CN201610979300 A CN 201610979300A CN 106622593 B CN106622593 B CN 106622593B
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- roller
- partial size
- twin rollers
- ore grinding
- crushing mill
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/02—Jaw crushers or pulverisers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of milling method of bone coal navajoite, breaks this method comprises: bone coal navajoite is sent into volume formula crusher and carries out volume, obtains volume of the partial size less than 100mm and breaks material；Material is broken to volume using twin rollers and successively carries out four roller-crushing mill mines, obtains ore grinding material of the content of material of the partial size less than 2mm 95% or more.The milling method of bone coal navajoite provided by the invention, ore grinding is carried out to bone coal navajoite in such a way that volume formula crusher and twin rollers combine, it is required that the range of raw ore material contained humidity is wider, twin rollers direct ore grinding can be used when raw ore material contained humidity is below 16%, and the ore grinding material met the requirements can be obtained in the auxiliary in ore grinding without other equipment, grinding process process is greatly reduced, it is easy to operate, it is effectively saved production cost.
Description
Technical field
The present invention relates to ore grinding technical fields, and in particular to a kind of milling method of bone coal navajoite.
Background technique
Currently, have two using the dominating process route that bone coal type navajoite carries out vanadium extraction, i.e. pyrogenic process roasting vanadium extraction and complete wet
Method is acid-leaching vanadium-extracted.But either pyrogenic process roasting vanadium extraction or Whote-wet method are acid-leaching vanadium-extracted, require that first raw ore is crushed and is ground
Mine processing.
In the prior art, two kinds of process for extracting vanadium generally carry out ore grinding by the way of jaw crusher+ball mill, specifically
Process are as follows: (1) pyrogenic process roasts process for extracting vanadium: raw ore enter after jaw crusher make the partial size of broken material reach certain particle size with
Under, into drying machine drying to material moisture content less than 5% hereinafter, entering back into dry ball to grinding fineness reaches certain grain
After degree, material is by entering roasting system after granulation；(2) Whote-wet method process for extracting vanadium by acid leaching: raw ore makes after entering jaw crusher
After the partial size of broken material reaches certain particle size hereinafter, entering back into the Semi-Autogenous ball mill corase grinding of wet type, make fineness into grader
In certain particle size qualified material overflow below to acid leaching system, the material of unqualified coarse grain diameter return again to wet ball mill into
Enter grader after row fine grinding.
When roasting vanadium extraction using pyrogenic process, dry ball is water content less than 5% to the moisture requirement for entering material, so
Raw ore by jaw crusher it is broken after also needs by drying machine drying, in addition when carrying out ore grinding for the proportion of steel ball, fill out
Charge, Ball-milling Time etc. have strict demand, increase actual production difficulty；When acid-leaching vanadium-extracted using Whote-wet method, wet ball-milling
After machine ore grinding must with grader is mating is used in combination, although in addition wet ball mill ore grinding when to material moisture of the Hubei Province after broken without wanting
It asks, but dense ore grinding, steel ball matching, steel ball loading, Ball-milling Time etc. need to be controlled in ore grinding, equally increase actual production hardly possible
Degree.Therefore two kinds of conventionally employed milling methods of technique lengthen process flow, complicated for operation and high production cost.
Summary of the invention
The present invention provides a kind of milling method of bone coal navajoite, to solve grinding process long flow path in the prior art, behaviour
The problem of making complicated and high production cost.
The present invention provides a kind of milling method of bone coal navajoite, comprising:
Bone coal navajoite is sent into progress Hubei Province in jaw crusher to break, the Hubei Province of partial size less than 100mm is obtained and breaks material；
Material is broken to described Hubei Province using twin rollers and successively carries out four roller-crushing mill mines, obtains material of the partial size less than 2mm
Ore grinding material of the content 95% or more.
As preferred embodiment of the invention, ore grinding of the content for obtaining material of the partial size less than 2mm 95% or more
In the step of material, treating capacity is 20~30t/h when first time roller-crushing mill mine, obtains the first time ore grinding object that partial size is less than 25mm
Material, wherein the content of material of the partial size less than 2mm is 28~35%；Treating capacity is 20~30t/h when second of roller-crushing mill mine, is obtained
It is less than second of ore grinding material of 5mm to partial size, wherein the content of material of the partial size less than 2mm is 45~55%；It is right for the third time
Treating capacity is 10~15t/h when roller ore grinding, obtains the third time ore grinding material that partial size is less than 3mm, wherein partial size is less than the object of 2mm
The content of material is 70~80%；Treating capacity is 5~7.5t/h when the 4th roller-crushing mill mine, obtains the ore grinding object that partial size is less than 2mm
Material.
As preferred embodiment of the invention, after successively carrying out roller-crushing mill mine three times to the broken material in described Hubei Province using twin rollers,
If the third time ore grinding material contained humidity is lower than 8%, by the sieve in the aperture 2mm to the third time ore grinding material into
Row screening, wherein lower part of screen is divided into the ore grinding material that the partial size that meets the requirements is less than 2mm, partially continue on sieve the 4th time it is right
Roller ore grinding.
As preferred embodiment of the invention, ore grinding of the content for obtaining material of the partial size less than 2mm 95% or more
In the step of material, using twin rollers to described Hubei Province break material successively carry out four roller-crushing mill mines when, the twin rollers it is initial
Roller spacing is sequentially reduced；Wherein, the twin rollers it is initial to roller spacing be followed successively by from big to small 16~24mm, 2.4~
3.6mm, 1.2~1.8mm and 0.4~0.6mm.
As preferred embodiment of the invention, the twin rollers it is initial to roller spacing be followed successively by from big to small 20mm, 3mm,
1.5mm and 0.5mm.
As preferred embodiment of the invention, when carrying out roller-crushing mill mine using twin rollers, if detecting pair of the twin rollers
Roller spacing be more than it is described initially to the 50% of roller spacing when, then need by the twin rollers to roller spacing be readjusted to it is described just
Begin to roller spacing.
As preferred embodiment of the invention, ore grinding of the content for obtaining material of the partial size less than 2mm 95% or more
In the step of material, the twin rollers are carrying out first time roller-crushing mill mine and when second of roller-crushing mill mine using patterned, wear-resisting
The high roller of intensity, the twin rollers are smooth, anti-using curved surface when carrying out third time roller-crushing mill mine and the 4th roller-crushing mill mine
The high roller of Compressive Strength.
As preferred embodiment of the invention, the roller that diameter is 1000mm for 1200mm, length is used in the twin rollers.
The milling method of bone coal navajoite provided by the invention, to bone coal in such a way that jaw crusher and twin rollers combine
Navajoite carries out ore grinding, it is desirable that the range of raw ore material contained humidity is wider, raw ore material contained humidity Shi Junke below 16%
Using the direct ore grinding of twin rollers, and the ore grinding material met the requirements can be obtained in the auxiliary in ore grinding without other equipment,
Grinding process process is greatly reduced, it is easy to operate, it is effectively saved production cost.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of flow chart of the milling method of bone coal navajoite provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Shown in referring to Fig.1, the embodiment of the invention discloses a kind of milling methods of bone coal navajoite, this method comprises:
S1, will bone coal navajoite be sent into jaw crusher in carry out Hubei Province break, obtain partial size less than 100mm Hubei Province break material.
In the step, first passes through jaw crusher and the bone coal navajoite of bulk is crushed, finally obtain partial size and be less than
Material is broken in Hubei Province of 100mm, to meet the needs of subsequent technique.
S2, it material is broken to Hubei Province using twin rollers successively carries out four roller-crushing mill mines, obtain containing for material of the partial size less than 2mm
Measure the ore grinding material 95% or more.
In the step, material is broken into Hubei Province obtained in above-mentioned steps by twin rollers and carries out four roller-crushing mill mines, so as to
Ore grinding material of the content of material of the partial size less than 2mm 95% or more is obtained, which can reach pyrogenic process roasting vanadium extraction
The requirement of technique and Whote-wet method process for extracting vanadium by acid leaching to material particular diameter.
Require the range of raw ore material contained humidity wider using when twin rollers ore grinding, raw ore material contained humidity is 16%
Twin rollers direct ore grinding can be used when following, therefore efficiently solve the higher material of water content to dry again asking for ore grinding
Topic, reduces grinding process process.Meanwhile when using twin rollers ore grinding, the auxiliary without other equipment can be obtained satisfaction and want
The ore grinding material asked, it is easy to operate, it is effectively saved production cost.
On the basis of the above embodiments, in step S2, treating capacity is 20~30t/h when first time roller-crushing mill mine, is obtained
Partial size is less than the first time ore grinding material of 25mm, and wherein the content of material of the partial size less than 2mm is 28~35%；Second to roller
Treating capacity is 20~30t/h when ore grinding, obtains second of ore grinding material that partial size is less than 5mm, wherein partial size is less than the material of 2mm
Content be 45~55%；Treating capacity is 10~15t/h when third time roller-crushing mill mine, obtains third time of the partial size less than 3mm and grinds
Mineral material, wherein the content of material of the partial size less than 2mm is 70~80%；Treating capacity is 5~7.5t/ when the 4th roller-crushing mill mine
H obtains ore grinding material of the content of material of the partial size less than 2mm 95% or more.
The material of material particular diameter and partial size less than 2mm contains after treating capacity, ore grinding when by four roller-crushing mill mines
The accurate control of amount, the ore grinding material that can be met the requirements.
When carrying out first time roller-crushing mill mine, since the particle diameter distribution that material is broken in Hubei Province is bigger, it can carry out in actual production
Weight plate feed, to ensure that twin rollers can steadily be fed, prevents putty and influences treating capacity, and treating capacity can be influenced further
The partial size of first time ore grinding material.Therefore, the treating capacity during this is set as 20~30t/h, while by adjusting twin rollers
The partial size of first time ore grinding material obtained after ore grinding, which is less than 25mm, to be guaranteed to roller spacing, wherein partial size is less than 2mm's
The content of material can reach 28~35%.
When carrying out second of roller-crushing mill mine, due to first time, the particle diameter distribution of ore grinding material is smaller, the chargings of twin rollers compared with
Steadily, the processing capacity of its processing capacity and first time roller-crushing mill mine should be closer in actual production.Therefore, by the process
In treating capacity be equally set as 20~30t/h, while obtain after ore grinding second is guaranteed to roller spacing by adjust twin rollers
The partial size of secondary ore grinding material is less than 5mm, and wherein the content of material of the partial size less than 2mm can reach 45~55%.
When carrying out third time roller-crushing mill mine, since the material particular diameter that need to make is smaller, so the processing capacity of the process
It can be declined.Therefore, the treating capacity during this is set as 10~15t/h, while by adjusting twin rollers to roller spacing
Guarantee that the partial size of the third time ore grinding material obtained after ore grinding is less than 3mm, wherein the content of material of the partial size less than 2mm can reach
70~80%.
When carrying out the 4th roller-crushing mill mine, since the material particular diameter that need to make is smaller, so the processing capacity of the process
Can be less, it is only capable of reaching 50% or so of third time roller-crushing mill mine treating capacity.Therefore, the treating capacity during this is set as 5~
7.5t/h, while the material for being less than 2mm to the partial size met the requirements after roller spacing guarantee ore grinding by adjusting twin rollers
Ore grinding material of the content 95% or more.
On the basis of the above embodiments, in step S2, material is broken to Hubei Province using twin rollers and successively carries out roller-crushing mill three times
After mine, if third time ore grinding material contained humidity is lower than 8%, third time ore grinding material is carried out by the sieve in the aperture 2mm
Screening, wherein lower part of screen is divided into the ore grinding material that the partial size met the requirements is less than 2mm, partially continues the 4th time to roller on sieve
Ore grinding.
Partial size is less than in the third time ore grinding material for having been begun to decline due to the treating capacity of third time roller-crushing mill mine, and having been obtained
The content of the material of 2mm can reach 70~80%, therefore in actual production, if detecting third time ore grinding material contained humidity
When lower than 8%, third time ore grinding material can be sieved by the sieve of 2mm.Lower part of screen point is the partial size met the requirements
Ore grinding material less than 2mm without carrying out the 4th roller-crushing mill mine, and sieves top and is divided into the partial size for being unsatisfactory for requiring greater than 2mm
Material, then need to continue the 4th roller-crushing mill mine.In this way, the overground phenomenon of roller-crushing mill mine can be effectively reduced, can also have
Effect, which is alleviated, handles low problem.
On the basis of the above embodiments, in step S2, material is broken to Hubei Province using twin rollers and successively carries out four roller-crushing mills
When mine, the initial of twin rollers is sequentially reduced roller spacing；Wherein, twin rollers it is initial 16 is followed successively by from big to small to roller spacing~
24mm, 2.4~3.6mm, 1.2~1.8mm and 0.4~0.6mm.
The partial size of the material respectively obtained due to four roller-crushing mill mines is sequentially reduced, correspondingly, every time
The initial of twin rollers is also to be sequentially reduced to roller spacing when roller-crushing mill mine, be successively adjusted to from big to small 16~24mm, 2.4~
The partial size of 3.6mm, 1.2~1.8mm and 0.4~0.6mm, the material that each roller-crushing mill mine can be made to obtain are met the requirements.
It, need to be initial to roller spacing phase one with the stage by being adjusted to roller spacing for twin rollers when each roller-crushing mill mine
It causes.
Preferably, the initial of twin rollers is followed successively by 20mm, 3mm, 1.5mm and 0.5mm to roller spacing from big to small.
On the basis of the above embodiments, in step S2, when carrying out roller-crushing mill mine using twin rollers, if detecting twin rollers
To roller spacing be more than initially to the 50% of roller spacing when, then need being readjusted to initially roller spacing between roller for twin rollers
Away from.
In each roller-crushing mill mine, since material for a long time squeezes roller, it is actual can be than setting to roller spacing
Set it is initial roller spacing is slightly increased, and while increasing roller spacing, will affect the partial size of the material obtained after roller-crushing mill mine.Cause
This needs often to detect to roller spacing in the actual production process, if detecting, to roller spacing be more than the initial of the stage
When to the 50% of roller spacing, then needs that roller spacing will be readjusted to this initially to roller spacing, ore grinding is further continued for, to ensure not shadow
Ring the partial size of obtained material.
On the basis of the above embodiments, in step S2, twin rollers are carrying out first time roller-crushing mill mine with second to roller
Using the roller that patterned, wear-resistant strength are high when ore grinding, twin rollers are carrying out third time roller-crushing mill mine and the 4th roller-crushing mill mine
The roller that Shi Caiyong curved surface is smooth, compression strength is high.
Since twin rollers will appear abrasion in roller-crushing mill mine, the degree of wear is difficult to detect, and the roller of twin rollers
It is more serious one of the component of abrasion, therefore need to considers the structure and material of roller.Due to first time roller-crushing mill mine and second
When roller-crushing mill mine, the partial size of the material of entrance is larger, is easy roller is stuck, therefore the two stages need to be using patterned, resistance to
The high roller of intensity is ground, can effectively prevent material that roller is stuck, while the abrasion to roller can also be reduced.And third time is right
When roller ore grinding and the 4th roller-crushing mill mine, the partial size of the material of entrance is smaller, main function be by the further fine grinding of material, because
This two stage need to be using the roller that curved surface is smooth, compression strength is high.
On the basis of the above embodiments, in step S2, it for 1200mm, length is 1000mm's that diameter is used in twin rollers
Roller.
In actual production, the pipeline of other sizes, the ginseng provided in the present embodiment can be provided according to production needs
The type selecting for the twin rollers that number can produce for different scales metaplasia provides reference frame.
Below with reference to specific preferred embodiment, the invention will be described in further detail, but does not therefore limit this hair
Bright protection scope.
Embodiment one
Bone coal navajoite is sent into progress Hubei Province in jaw crusher to break, the Hubei Province of partial size less than 100mm is obtained and breaks material；Wherein,
Bone coal navajoite contained humidity is 9%, and material content of the partial size less than 2mm is 18%.
Material is broken to Hubei Province using twin rollers and successively carries out four roller-crushing mill mines, it, will be to roller wherein when first time roller-crushing mill mine
Machine is adjusted to 23mm to roller spacing, and setting treating capacity is 23t/h, obtains the first time ore grinding material that partial size is less than 25mm,
The content of material of the middle partial size less than 2mm is 29%；When second of roller-crushing mill mine, by being adjusted to roller spacing for twin rollers
3.5mm, setting treating capacity are 23t/h, obtain second of ore grinding material that partial size is less than 5mm, wherein partial size is less than the material of 2mm
Content be 46%；When third time roller-crushing mill mine, twin rollers are adjusted to 1.7mm to roller spacing, setting treating capacity is 11t/
H obtains the third time ore grinding material that partial size is less than 3mm, and wherein the content of material of the partial size less than 2mm is 72%；4th time right
When roller ore grinding, twin rollers are adjusted to 0.5mm to roller spacing, setting treating capacity is 5t/h, obtains the material that partial size is less than 2mm
Content be 95.7% ore grinding material.
Embodiment two
Bone coal navajoite is sent into progress Hubei Province in jaw crusher to break, the Hubei Province of partial size less than 100mm is obtained and breaks material；Wherein,
Bone coal navajoite contained humidity is 11%, and material content of the partial size less than 2mm is 20%.
Material is broken to Hubei Province using twin rollers and successively carries out four roller-crushing mill mines, it, will be to roller wherein when first time roller-crushing mill mine
Machine is adjusted to 22mm to roller spacing, and setting treating capacity is 27t/h, obtains the first time ore grinding material that partial size is less than 25mm,
The content of material of the middle partial size less than 2mm is 30%；When second of roller-crushing mill mine, by being adjusted to roller spacing for twin rollers
3.3mm, setting treating capacity are 27t/h, obtain second of ore grinding material that partial size is less than 5mm, wherein partial size is less than the material of 2mm
Content be 48%；When third time roller-crushing mill mine, twin rollers are adjusted to 1.6mm to roller spacing, setting treating capacity is
11.5t/h obtains the third time ore grinding material that partial size is less than 3mm, and wherein the content of material of the partial size less than 2mm is 73%；The
When four roller-crushing mill mines, twin rollers are adjusted to 0.45mm to roller spacing, setting treating capacity is 5.5t/h, obtains partial size and is less than
The ore grinding material that the content of the material of 2mm is 96.5%.
Embodiment three
Bone coal navajoite is sent into progress Hubei Province in jaw crusher to break, the Hubei Province of partial size less than 100mm is obtained and breaks material；Wherein,
Bone coal navajoite contained humidity is 13%, and material content of the partial size less than 2mm is 22%.
Material is broken to Hubei Province using twin rollers and successively carries out four roller-crushing mill mines, it, will be to roller wherein when first time roller-crushing mill mine
Machine is adjusted to 20mm to roller spacing, and setting treating capacity is 25t/h, obtains the first time ore grinding material that partial size is less than 25mm,
The content of material of the middle partial size less than 2mm is 32%；When second of roller-crushing mill mine, by being adjusted to roller spacing for twin rollers
3.0mm, setting treating capacity are 25t/h, obtain second of ore grinding material that partial size is less than 5mm, wherein partial size is less than the material of 2mm
Content be 50%；When third time roller-crushing mill mine, twin rollers are adjusted to 1.4mm to roller spacing, setting treating capacity is 13t/
H obtains the third time ore grinding material that partial size is less than 3mm, and wherein the content of material of the partial size less than 2mm is 75%；4th time right
When roller ore grinding, twin rollers are adjusted to 0.5mm to roller spacing, setting treating capacity is 6t/h, obtains the material that partial size is less than 2mm
Content be 97.2% ore grinding material.
Example IV
Bone coal navajoite is sent into progress Hubei Province in jaw crusher to break, the Hubei Province of partial size less than 100mm is obtained and breaks material；Wherein,
Bone coal navajoite contained humidity is 14%, and material content of the partial size less than 2mm is 23.5%.
Material is broken to Hubei Province using twin rollers and successively carries out four roller-crushing mill mines, it, will be to roller wherein when first time roller-crushing mill mine
Machine is adjusted to 18mm to roller spacing, and setting treating capacity is 22t/h, obtains the first time ore grinding material that partial size is less than 25mm,
The content of material of the middle partial size less than 2mm is 33%；When second of roller-crushing mill mine, by being adjusted to roller spacing for twin rollers
2.7mm, setting treating capacity are 22t/h, obtain second of ore grinding material that partial size is less than 5mm, wherein partial size is less than the material of 2mm
Content be 53%；When third time roller-crushing mill mine, twin rollers are adjusted to 1.3mm to roller spacing, setting treating capacity is 14t/
H obtains the third time ore grinding material that partial size is less than 3mm, and wherein the content of material of the partial size less than 2mm is 77%；4th time right
When roller ore grinding, twin rollers are adjusted to 0.55mm to roller spacing, setting treating capacity is 6.5t/h, obtains partial size less than 2mm's
The ore grinding material that the content of material is 98%.
Embodiment five
Bone coal navajoite is sent into progress Hubei Province in jaw crusher to break, the Hubei Province of partial size less than 100mm is obtained and breaks material；Wherein,
Bone coal navajoite contained humidity is 15%, and material content of the partial size less than 2mm is 25%.
Material is broken to Hubei Province using twin rollers and successively carries out four roller-crushing mill mines, it, will be to roller wherein when first time roller-crushing mill mine
Machine is adjusted to 17mm to roller spacing, and setting treating capacity is 28t/h, obtains the first time ore grinding material that partial size is less than 25mm,
The content of material of the middle partial size less than 2mm is 34.5%；When second of roller-crushing mill mine, by being adjusted to roller spacing for twin rollers
2.5mm, setting treating capacity are 28t/h, obtain second of ore grinding material that partial size is less than 5mm, wherein partial size is less than the material of 2mm
Content be 54%；When third time roller-crushing mill mine, twin rollers are adjusted to 1.3mm to roller spacing, setting treating capacity is
14.5t/h obtains the third time ore grinding material that partial size is less than 3mm, and wherein the content of material of the partial size less than 2mm is 79.6%；
When the 4th roller-crushing mill mine, twin rollers are adjusted to 0.4mm to roller spacing, setting treating capacity is 7.5t/h, and it is small to obtain partial size
The ore grinding material for being 98.7% in the content of the material of 2mm.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of milling method of bone coal navajoite characterized by comprising
Bone coal navajoite is sent into progress Hubei Province in jaw crusher to break, the Hubei Province of partial size less than 100mm is obtained and breaks material；
Material is broken to described Hubei Province using twin rollers and successively carries out four roller-crushing mill mines, when first time roller-crushing mill mine the twin rollers
It is initially 16~24mm to roller spacing, treating capacity is 20~30t/h, the first time ore grinding material that partial size is less than 25mm is obtained,
The content of material of the middle partial size less than 2mm is 28~35%；The twin rollers is initial to roller spacing when second of roller-crushing mill mine
For 2.4~3.6mm, treating capacity is 20~30t/h, obtains second of ore grinding material that partial size is less than 5mm, wherein partial size is less than
The content of the material of 2mm is 45~55%；When third time roller-crushing mill mine the twin rollers it is initial to roller spacing be 1.2~
1.8mm, treating capacity are 10~15t/h, obtain the third time ore grinding material that partial size is less than 3mm, wherein partial size is less than the material of 2mm
Content be 70~80%；The initial of the twin rollers is 0.4~0.6mm, treating capacity to roller spacing when the 4th roller-crushing mill mine
For 5~7.5t/h, ore grinding material of the content of material of the partial size less than 2mm 95% or more is obtained.
2. successively being carried out three times the method according to claim 1, wherein breaking material to described Hubei Province using twin rollers
After roller-crushing mill mine, if the third time ore grinding material contained humidity is lower than 8%, by the sieve in the aperture 2mm to the third
Secondary ore grinding material is sieved, and wherein lower part of screen is divided into the ore grinding material that the partial size met the requirements is less than 2mm, and part is continued on sieve
Carry out the 4th roller-crushing mill mine.
3. successively being carried out four times the method according to claim 1, wherein the twin rollers break material to described Hubei Province
Initial when roller-crushing mill mine is followed successively by 20mm, 3mm, 1.5mm and 0.5mm to roller spacing from big to small.
4. the method according to claim 1, wherein using twin rollers carry out roller-crushing mill mine when, if detecting institute
State twin rollers to roller spacing be more than it is described initially to the 50% of roller spacing when, then need the twin rollers to roller spacing again
It adjusts to described initially to roller spacing.
5. the method according to claim 1, wherein the twin rollers are carrying out first time roller-crushing mill mine and second
Using the roller that patterned, wear-resistant strength are high when secondary roller-crushing mill mine, the twin rollers are carrying out third time roller-crushing mill mine and the 4th
Roller smooth using curved surface when secondary roller-crushing mill mine, compression strength is high.
6. the method according to claim 1, wherein using the diameter to be for 1200mm, length in the twin rollers
The roller of 1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2063447U (en) * | 1989-12-09 | 1990-10-10 | 北京真空技术联营公司 | Mixed type disintegrator |
| CN2808292Y (en) * | 2004-10-10 | 2006-08-23 | 刘长福 | Ferroalloy crushing device |
| CN201384960Y (en) * | 2009-04-07 | 2010-01-20 | 李海军 | Improved vertical mineral double-roller grinder |
| CN103041905A (en) * | 2012-12-28 | 2013-04-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Method and system for crumbling and grinding carbide slag |
| CN103977855A (en) * | 2014-06-06 | 2014-08-13 | 杨静 | Multi-stage mineral crushing mechanism |
| CN205613357U (en) * | 2016-03-18 | 2016-10-05 | 淄博金安型煤有限公司 | Broken agitating unit is used in environment -friendly moulded coal production |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010069414A (en) * | 2008-09-18 | 2010-04-02 | Hitachi Constr Mach Co Ltd | Jaw crusher |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2063447U (en) * | 1989-12-09 | 1990-10-10 | 北京真空技术联营公司 | Mixed type disintegrator |
| CN2808292Y (en) * | 2004-10-10 | 2006-08-23 | 刘长福 | Ferroalloy crushing device |
| CN201384960Y (en) * | 2009-04-07 | 2010-01-20 | 李海军 | Improved vertical mineral double-roller grinder |
| CN103041905A (en) * | 2012-12-28 | 2013-04-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Method and system for crumbling and grinding carbide slag |
| CN103977855A (en) * | 2014-06-06 | 2014-08-13 | 杨静 | Multi-stage mineral crushing mechanism |
| CN205613357U (en) * | 2016-03-18 | 2016-10-05 | 淄博金安型煤有限公司 | Broken agitating unit is used in environment -friendly moulded coal production |
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