CN106311453A - Device for closed cycle phosphorite wet ball grinding and ball grinding method - Google Patents
Device for closed cycle phosphorite wet ball grinding and ball grinding method Download PDFInfo
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- CN106311453A CN106311453A CN201610764068.6A CN201610764068A CN106311453A CN 106311453 A CN106311453 A CN 106311453A CN 201610764068 A CN201610764068 A CN 201610764068A CN 106311453 A CN106311453 A CN 106311453A
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- concentrator
- ball grinding
- cyclone
- pump
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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
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/186—Adding fluid, other than for crushing by fluid energy
- B02C17/1865—Adding fluid, other than for crushing by fluid energy after crushing
- B02C17/187—Adding fluid, other than for crushing by fluid energy after crushing with recirculation of material to crushing zone
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- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention provides a device for closed cycle phosphorite wet ball grinding and a ball grinding method. All kinds of problems in existing phosphorite wet ball grinding are solved by additionally arranging a swirler set and a thickener based on an existing 'open-way grinding' technology. The method specifically comprises that ore pulp subjected to wet ball grinding is graded in the swirler set, ore pulp with qualified fineness overflows into a charging basket from the top of a swirler, and the collected ore pulp is pumped into a thickener central barrel and pumped into a ore pulp storage trough or an extraction trough through an underflow pump after being subjected to separating and concentrating; clear liquid on the upper layer of the thickener overflows into a clear water trough and is pumped back to a feeding end of a ball grinder; and swirler underflow coarse particles return to the feeding end of the ball grinder along a chute and are subjected to circulating ball grinding. The ball grinding method has the advantages of being reasonable in technology, high in productivity and low in energy consumption, overcomes the limit phosphorite pulp fineness has on the ball grinder, avoids the industrial problem that materials in the ball grinder are randomly discharged, grinded overmuch, and excessively grinded, and has good economic, environmental and social benefits.
Description
Technical field
The present invention relates to phosphorus ore exploitation processing technique field, be specifically related to the device of a kind of closed cycle wet ball grinding phosphorus ore
And ball grinding method.
Background technology
Existing wet ball grinding technique is at phosphorus ore commonly used in current China most of phosphorous chemical industry commercial production
Science and engineering skill, its capital equipment wet ball mill uses special rolling bearing as the supporting construction of cylinder, solves replacement and slide
Sealing problem under the life-span of heavy duty rolling bearing used by bearing shell and regulation of mental activities problem, mal-condition and the cylinder produced that works long hours
Body play problem.
In the prior art, phosphorus ore handling process mainly includes crushing, sieving and three links of wet ball grinding.The phosphorus prepared
Mining forklift loads crude ore bin, driving grab bucket feed jaw crusher and carry out coarse crushing, and the phosphorus ore after coarse crushing is again through Vibration Screen
Point, lower part of screen is divided and is delivered to fine ore bin by belt feeder, and sieve upper part is then fed gyratory crusher by belt feeder and carries out in small, broken bits, in small, broken bits after
Phosphorus ore enter bolting again, fine ore bin is divided in lower part of screen, and sieve upper part returns gyratory crusher；Enter the phosphorus ore of fine ore bin
Feed ball mill through rotary disc feeder, coordinate the reasonable addition of clear water, finally give the finished product ore pulp that fineness, moisture are suitable.
Above-mentioned wet ball grinding technique also known as " open circuit mill " technique, as it is shown in figure 1, this technique has, equipment is few, reduced investment, behaviour
Making the advantages such as simple, it is finished product that ore pulp goes out grinding machine, but this technique exists following subject matter:
1. ore pulp is not had selectivity, ore pulp thick, thin to go out grinding machine at random by " open circuit mill " technique, and the most levigate ore pulp can not be first
Discharge grinding machine and overground phenomenon occurs, and the most levigate coarse granule ore pulp is also with entering finished product ore pulp.
2. slurry fineness is unstable, wherein contains the granule of more particle diameter >=0.5mm, abrasion pulp tank stirring, ore slurry pump
While impeller, also have impact on phosphoric acid extraction rate.
3. in " open circuit mill " production technology, by reducing mine-supplying quantity, sacrificing mill machine throughput, to guarantee slurry fineness,
In causing mine-supplying quantity deficiency, grinding machine, material stock is few, increases the steel ball damage to liner plate.
4., during " open circuit mill " produces, generally there is " few broken many mills " problem of rock phosphate in powder in ball mill device, operate for a long time
Very big on the impact of ball mill, add plant maintenance intensity, even can shorten ball mill service life time serious, and increase
Power consumption.
Summary of the invention
It is an object of the invention to overcome the problems referred to above present in existing phosphorus ore wet ball grinding process, it is provided that a kind of closed circuit
The device of circulation wet ball grinding phosphorus ore and ball grinding method.The method adds for right on the basis of original " open circuit mill " technique
Granule carries out a cluster cyclone of classification, and the ore pulp of preliminary grinding squeezes into cyclone through cyclone to ore deposit pump, real under effect of centrifugal force
Existing classification, fine grained ore pulp supplies production and application after entering the further solid-liquid separation of concentrator, concentration, and coarse granule ore pulp returns mill feeding
End circulation ball milling, has that production technology is reasonable, yield is high, energy consumption is low, an advantage such as stability and energy-conserving and environment-protective.
For achieving the above object, the technical solution adopted in the present invention is as follows:
The present invention provides the device of a kind of closed cycle wet ball grinding phosphorus ore, mainly includes ball mill, cyclone, dense
Machine, cyclone are to ore deposit pump, concentrator feed pump, underflow pump, it is characterised in that:
Described discharging end of ball mill is connected with cyclone by cyclone feed pump, bottom feeding of ball mill end and cyclone
Desilting mouth, clarified water pump are connected with recirculated water；
Described concentrator is connected with cyclone apex overfall to ore deposit pump, with underflow pump phase bottom concentrator by concentrator
Even, concentrator top overfall is connected with clarified water pump.
In such scheme, described cyclone is hydrocyclone group, and described hydrocyclone group has helix body of feedstock
Structure.
In such scheme, described concentrator is that segmentation carries rake concentrator.
In such scheme, between discharging end of ball mill and cyclone feed pump, it is additionally provided with pulp tank, the work of pulp tank
With being collection grinding machine discharging ore pulp.
In such scheme, it is additionally provided with by barrel, by barrel between cyclone apex overfall and concentrator are to ore deposit pump
Effect be to collect the fine grained ore pulp after classification.
In such scheme, being additionally provided with Rinsing Area between concentrator top overfall and clarified water pump, the effect of Rinsing Area is
Reclaim the concentrator supernatant, be beneficial to recycle.
The present invention also provides for a kind of method of closed cycle wet ball grinding phosphorus ore, specifically comprises the following steps that (a) is through break process
After rock phosphate in powder enter ball mill carry out wet ball grinding after be delivered to pulp tank, the phosphate ore pulp in pulp tank is by cyclone feed pump
It is delivered to cyclone；B () phosphate ore pulp is in cyclone after classification, bulky grain moves downward to discharge through desilting mouth and is back to ball milling
Machine, little granule moves upward overflow to by obtaining fine granularity overflow product in barrel；C () fine granularity overflow product is given by concentrator
Ore deposit transport pump is in concentrator, and the fine grained ore pulp after concentrating and separating is delivered to subsequent processing by underflow pump, and the supernatant is from dense
Close machine top overflow, to Rinsing Area, is returned in ball mill by clarified water pump.
In such scheme, fine granularity overflow product is pumped to concentrator through concentrator to ore deposit in by barrel, through being erected at
Feeding pipe above concentrator enters central feed tube, and in constant-current stabilizer after buffering, bigger material is directly entered bottom sedimentation
District is precipitated in the cone hole that gathers materials, and thinner material advection sedimentation in radial direction diffluence pass enters pond, with the mud-scraping apparatus of crane span structure revolution
The material of central area will be deposited in along scraping in cone hole at the bottom of pond, after discharge through underflow pump.
Compared with existing " open circuit mill " process units and technique, " closed circuit mill " production technology of the present invention has following excellent
Point and good effect:
(1) by cyclone classification, improve slurry fineness, stop or coarse granule ore pulp is greatly reduced to enter extraction work
Sequence, thus improve phosphoric acid extraction rate.In conjunction with trail run situation, phosphate ore pulp fineness (-100 mesh) increases to existing from original 80%
90%～93%, phosphoric acid extraction rate have also exceeded 97%.
(2) slurry fineness restriction to ball mill is considerably reduced, it is to avoid the many mills of material, overground feelings in ball mill
Condition, is conducive to extending ball grinding machine lining board service life.
(3) reducing because of fineness impact, disk feeding capacity is gradually increased, and improves to ore deposit ability to a certain extent, is conducive to
The operation demand met and realize three set phosphoric acid plants, reduces power consumption.
Accompanying drawing explanation
Fig. 1 is traditional " open circuit mill " production technological process；
" closed circuit mill " technological process of production that Fig. 2 provides for the present invention.
Detailed description of the invention
In order to make those of ordinary skill in the art fully understand, the present invention fully understands technical scheme and useful effect
Really, absolutely prove further below in conjunction with specific embodiment.
By the good and bad contrast of " closed circuit mill " technology with " open circuit mill " technique in the present invention, and combine the original phosphorus ore of my company
Processing means, by reasonable reformation, analyzes and sums up a kind of apparatus and method utilizing closed cycle wet ball grinding phosphorus ore, reach
Become the effect of low power consuming, high yield.
A kind of method utilizing closed cycle wet ball grinding phosphorus ore as shown in Figure 2, comprises the following steps:
Rock phosphate in powder after, circular cone tear reason broken through Hubei Province, after wet ball grinding, enters hydrocyclone and utilizes centrifugal force field to divide
Level.Rely on the helix body of feedstock structure of hydrocyclone group, pre-settlement action in utilizing feed pipe, regulate and control feed particles space
Pre-arrangement, makes granule first produce layering before entering cyclone body on body of feedstock section, enters profit after hydrocyclone
Use centrifugal force field classification.Bulky grain is near classifying equipoment body outer wall, and little granule is near classifying equipoment inner body wall, at centrifugal force
Under field action, bulky grain with contour stealth move downward through desilting mouth discharge return to feeding of ball mill end realize closed cycle until
Reach the fineness of technological requirement, little granule with the inward eddy overflow that moves upward to by barrel obtains fine granularity overflow product, from
And realize the classification of phosphate ore pulp.
Rake concentrator is carried by concentrator to the input segmentation of ore deposit pump by the fine granularity overflow product (little granule ore pulp) in barrel,
Central feed tube is entered through being erected at the feeding pipe above concentrator.In constant-current stabilizer after buffering, bigger of part material is straight
Tapping into and precipitate in the cone hole that gathers materials into decanting zone, bottom, thinner of another part material advection in radial direction diffluence pass enters pond sinks
Fall, major part material is deposited in concentration basin central area.With crane span structure revolution mud-scraping apparatus by the material of precipitation along scrape at the bottom of pond into
In cone hole (concentration improves further, but will not be fixedly arranged in hole), after discharge through underflow pump.Concentrator supernatant overflow is extremely
Rinsing Area, returns feeding of ball mill end through clarified water pump effect, makees wet ball grinding water, and cyclone underflow (coarse fraction) is then with chute
Return mill feeding end, circulate ball milling.
The present invention uses cyclone classification to improve slurry fineness, stops or coarse granule ore pulp enter after work is greatly reduced
Sequence, is conducive to improving phosphoric acid extraction rate.Considerably reduce the slurry fineness restriction to bowl mill ore-feeding amount simultaneously, be effectively improved
Ball mill production capacity, largely avoids the many mills of material, an overground industry difficult problem in ball mill, extends ball mill
Liner plate service life.In conjunction with our company's reality trail run situation, phosphate ore pulp fineness (-100 mesh) increases to existing from original 80%
90%～93% had, phosphoric acid extraction rate have also exceeded 97%.Because fineness impact reduces, disk feeding capacity is gradually increased, necessarily
Improve in degree to ore deposit ability, be conducive to the operation demand meeting with realizing three set phosphoric acid plants, reduce power consumption.
Claims (8)
1. a device for closed cycle wet ball grinding phosphorus ore, including ball mill, cyclone, concentrator, cyclone to ore deposit pump, dense
Close machine feed pump, underflow pump, it is characterised in that:
Described discharging end of ball mill is connected with cyclone by cyclone feed pump, desilting bottom feeding of ball mill end and cyclone
Mouth, clarified water pump are connected with recirculated water；
Described concentrator is connected with cyclone apex overfall to ore deposit pump by concentrator, is connected with underflow pump bottom concentrator,
Concentrator top overfall is connected with clarified water pump.
The device of a kind of closed cycle wet ball grinding phosphorus ore the most as claimed in claim 1, it is characterised in that: described cyclone is
Hydrocyclone group, described hydrocyclone group has helix body of feedstock structure.
The device of a kind of closed cycle wet ball grinding phosphorus ore the most as claimed in claim 1, it is characterised in that: described concentrator is
Segmentation carries rake concentrator.
The device of a kind of closed cycle wet ball grinding phosphorus ore the most as claimed in claim 1, it is characterised in that: at ball mill discharging
It is additionally provided with pulp tank between end and cyclone feed pump.
The device of a kind of closed cycle wet ball grinding phosphorus ore the most as claimed in claim 1, it is characterised in that: at cyclone apex
Overfall and concentrator are additionally provided with by barrel between the pump of ore deposit.
The device of a kind of closed cycle wet ball grinding phosphorus ore the most as claimed in claim 1, it is characterised in that: at concentrator top
Rinsing Area it is additionally provided with between overfall and clarified water pump.
7. the method for a closed cycle wet ball grinding phosphorus ore, it is characterised in that comprise the following steps: (a) is after break process
Rock phosphate in powder enter ball mill carry out wet ball grinding after be delivered to pulp tank, the phosphate ore pulp in pulp tank is defeated by cyclone feed pump
Deliver to cyclone；B () phosphate ore pulp is in cyclone after classification, bulky grain moves downward to discharge through desilting mouth and is back to ball mill,
Little granule moves upward overflow to by obtaining fine granularity overflow product in barrel；(c) fine granularity overflow product by concentrator to ore deposit
Transport pump is in concentrator, and the fine grained ore pulp after concentrating and separating is delivered to subsequent processing by underflow pump, and the supernatant is from dense
The overflow of machine top, to Rinsing Area, is returned in ball mill by clarified water pump.
The method of a kind of closed cycle wet ball grinding phosphorus ore the most as claimed in claim 7, it is characterised in that: fine granularity overflow is produced
Thing is pumped to concentrator in by barrel, enters central feed tube, at constant-current stabilizer through being erected at the feeding pipe above concentrator
After interior buffering, bigger material is directly entered decanting zone, bottom and precipitates in the cone hole that gathers materials, and thinner material enters through radial direction diffluence pass
Advection sedimentation in pond, will be deposited in the material of central area along scraping in cone hole at the bottom of pond, finally with the mud-scraping apparatus of crane span structure revolution
Discharge through underflow pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764068.6A CN106311453A (en) | 2016-08-30 | 2016-08-30 | Device for closed cycle phosphorite wet ball grinding and ball grinding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764068.6A CN106311453A (en) | 2016-08-30 | 2016-08-30 | Device for closed cycle phosphorite wet ball grinding and ball grinding method |
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| CN106311453A true CN106311453A (en) | 2017-01-11 |
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| CN201610764068.6A Pending CN106311453A (en) | 2016-08-30 | 2016-08-30 | Device for closed cycle phosphorite wet ball grinding and ball grinding method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890719A (en) * | 2017-02-18 | 2017-06-27 | 陈建龙 | A kind of grinding system and its method |
| CN106914332A (en) * | 2017-04-18 | 2017-07-04 | 云南佳贝节能科技有限公司 | A kind of system of processing of rock phosphate in powder |
| CN108144726A (en) * | 2018-01-17 | 2018-06-12 | 洛阳和梦科技有限公司 | Small particle rubber powder process units |
| CN110732165A (en) * | 2019-11-26 | 2020-01-31 | 烟台鑫矿工程技术服务有限公司 | system and method for improving processing capacity of thickener |
| CN111004052A (en) * | 2019-12-10 | 2020-04-14 | 贵州胜威福全化工有限公司 | Non-curing preparation method for common calcium superphosphate production |
| CN111921639A (en) * | 2020-07-13 | 2020-11-13 | 贵州西洋实业有限公司 | Disc feeding mechanism in fertilizer production |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890719A (en) * | 2017-02-18 | 2017-06-27 | 陈建龙 | A kind of grinding system and its method |
| CN106890719B (en) * | 2017-02-18 | 2020-05-19 | 陈建龙 | Ore grinding system and method thereof |
| CN106914332A (en) * | 2017-04-18 | 2017-07-04 | 云南佳贝节能科技有限公司 | A kind of system of processing of rock phosphate in powder |
| CN108144726A (en) * | 2018-01-17 | 2018-06-12 | 洛阳和梦科技有限公司 | Small particle rubber powder process units |
| CN110732165A (en) * | 2019-11-26 | 2020-01-31 | 烟台鑫矿工程技术服务有限公司 | system and method for improving processing capacity of thickener |
| CN110732165B (en) * | 2019-11-26 | 2023-09-29 | 烟台鑫矿服工程管理集团有限公司 | System and method for improving throughput of thickener |
| CN111004052A (en) * | 2019-12-10 | 2020-04-14 | 贵州胜威福全化工有限公司 | Non-curing preparation method for common calcium superphosphate production |
| CN111921639A (en) * | 2020-07-13 | 2020-11-13 | 贵州西洋实业有限公司 | Disc feeding mechanism in fertilizer production |
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Application publication date: 20170111 |