CN207786765U - Air swept mill grinds system for classification in advance for phosphorus ore - Google Patents

Air swept mill grinds system for classification in advance for phosphorus ore Download PDF

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Publication number
CN207786765U
CN207786765U CN201721568178.1U CN201721568178U CN207786765U CN 207786765 U CN207786765 U CN 207786765U CN 201721568178 U CN201721568178 U CN 201721568178U CN 207786765 U CN207786765 U CN 207786765U
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China
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phosphorus ore
mill
connect
outlet
airswept
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CN201721568178.1U
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Inventor
袁先富
杨建国
任敬
陈钢
杜阳
冷阳
李蓓
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China Wuhuan Engineering Co Ltd
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China Wuhuan Engineering Co Ltd
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Abstract

The utility model discloses a kind of phosphorus ore, air swept mill grinds system for classification in advance, and it is high without pre- classification, high energy consumption, air leak rate of air curtain to solve the problems, such as that existing phosphorus ore grinds that there are raw material phosphorus ores.Technical solution includes phosphorus ore storehouse, metering batcher, the first bucket elevator and V-type powder selector before sequentially connected mill, and the product fine powder outlet of the V-type powder selector is connect through the first cyclone separator, the first bag filter, the first drag conveyor, the second drag conveyor, the second bucket elevator with phosphorus ore storehouse after mill successively;The coarse granule outlet of the V-type powder selector is connect with airswept ball mill.The product phosphorus ore outlet of the airswept ball mill is connect with the second drag conveyor, the second bucket elevator with phosphorus ore storehouse after mill through the second cyclone separator, the second bag filter successively.Tthe utility model system is simple, can realize that pre- classification, dry, grinding and classification require, and energy consumption is low, at low cost, small investment, and ground phosphate rock meets the strict demand of phosphate fertilizer chemical plant installations.

Description

Air swept mill grinds system for classification in advance for phosphorus ore
Technical field
The utility model is related to a kind of scratch system, air swept mill grinds system for classification in advance for specifically a kind of phosphorus ore.
Background technology
In the production of modern phosphate fertilizer chemical plant installations, phosphorus is most crucial raw materials for production, and source is mainly natural phosphorus ore.According to not With phosphate fertilizer chemical plant installations demand, need to be processed phosphorus ore and be milled to specific mesh number (generally between the mesh of 100 mesh~200) Granularity.Traditional phosphorus ore ore grinding generally uses wet ball mill, small part to use airswept ball mill.Either wet ball mill Or airswept ball mill, traditional technological process are all phosphorus ores directly into ball mill grinding, in the big portion of raw material phosphor mine size distribution When dividing all more than 100 mesh, which is not present overground problem, is suitble to domestic phosphorus ore market.When using Morocco phosphorus ore, When the similar clauses ground phosphate rock such as Tunisia phosphorus ore, the universal reactivity of such phosphorus ore preferably has 30% in size distribution simultaneously~ 50% phosphorus ore is less than 100 mesh;If such phosphorus ore is direct plungeed into ball mill to be milled, there are the consumings of overground phenomenon need not The energy wanted;The pre- classifying equipoment screening machine of tradition is when screening out such phosphorus ore because fine powder is more with sieve pore blockade, screening effect The phenomenon that rate drastically declines also cannot thoroughly solve the problems, such as this.
Invention content
Purpose of the utility model is to solve above-mentioned technical problems, provide a kind of simple system, can realize pre- point Grade, grinding, dry and classification require, and reduce that production cost, low energy consumption, and it is stringent that the ground phosphate rock produced meets phosphate fertilizer chemical plant installations It is required that phosphorus ore air swept mill grinds system for classification in advance.
Technical solution includes that phosphorus ore storehouse before sequentially connected mill, metering batcher, the first bucket elevator and V-type select powder The product fine powder of device, the V-type powder selector exports successively through the first cyclone separator, the first bag filter, the first scraper plate Conveyer, the second drag conveyor, the second bucket elevator are connect with phosphorus ore storehouse after mill;The coarse granule of the V-type powder selector goes out Mouth is connect with airswept ball mill;The product phosphorus ore of the airswept ball mill exports successively through the second cyclone separator, the second pocket type Filter is connect with the second drag conveyor, the second bucket elevator with phosphorus ore storehouse after mill;First bag filter is through One circulating fan is connect with first row gas vent;Second bag filter connects through second circulation wind turbine and second row gas vent It connects.The hot-blast stove is connect with V-type powder selector and airswept ball mill respectively, and dry heat is provided for the two.
The hot-blast stove is connect with the air inlet of V-type powder selector and airswept ball mill respectively, and dry heat is provided for the two.
The outlet of the first circulation wind turbine is also connect with the wind-supplying mouth of V-type powder selector.
The outlet of the second circulation wind turbine is also connect with the glove compartment of airswept ball mill outlet.
Advantageous effect:
(1) use V-type powder selector that screening machine is replaced to carry out the pre- graded operation of phosphorus ore, V-type powder selector is not necessarily to power drive, right The sorting of material is adjusted by air-flow, and Powder Particle Size and production are selected using the friction speed gradient and change airflow direction control of air-flow Amount carries out rough classification to granular material, breaks up, is dried, can avoid blocking using equipment when screening plant, screening efficiency it is low The drawbacks of;It selects airswept ball mill that can realize the grinding and drying of phosphorus ore in grinding machine, is generated by circulating fan control system micro- Negative pressure prevents ground phosphate rock from being revealed in transmission process.
(2) separation of ground phosphate rock is all made of the mode of cyclone separator separation plus bag filter filtering, reduces to pocket type The abrasion of filter, good separating effect, reliable for operation, the dustiness discharged in exhaust gas fully meets national standard index.
(3) dry heat is provided for V-type powder selector and airswept ball mill using hot-blast stove, it is synchronous to realize the dry of ground phosphate rock Dry, the exhaust cycle part of the first and second circulating fans outlet respectively as benefit wind and helps blowing loopback V-type powder selector and wind Ball mill is swept, reduces outer exhaust, it is recycling thermal energy, energy-saving, environmentally friendly.
(4) Tthe utility model system is simple, reliable, equipment investment and operating cost are low, realize pre- point of aqueous phosphorus ore Grade, grinding and dry combination, low energy consumption, flow is simple, operation flexibly, safe and reliable, operating cost is low, environmental clean, raw The ground phosphate rock of production fully meets chemical industry phosphate fertilizer device to the granularity of ground phosphate rock and the requirement of moisture.
Description of the drawings
Fig. 1 is present invention process flow chart.
Wherein:Phosphorus ore storehouse, 2- meterings batcher, the first bucket elevators of 3-, 4-V types powder selector, 5- wind sweep ball before 1- mills Grinding machine, the first cyclone separators of 6-, the first bag filters of 7-, 8- first circulations wind turbine, the second cyclone separators of 9-, 10- Two bag filters, 11- second circulations wind turbine, the first drag conveyors of 12-, the second drag conveyors of 13-, the second bucket types of 14- Phosphorus ore storehouse, 16- hot-blast stoves, 17- first rows gas vent, 18- second row gas vents after elevator, 15- mills
Specific implementation mode
Explanation is further explained to the utility model below in conjunction with the accompanying drawings:
Referring to Fig. 1, grinds preceding storehouse phosphorus ore 1 and connect with V-type powder selector 4 through metering batcher 2, the first bucket elevator 3, it is described The fine powder outlet of V-type powder selector 4 successively with the first cyclone separator 6, the first bag filter 7, the first drag conveyor 12, the Two drag conveyors 13, the second bucket elevator 14 are connect with phosphorus ore storehouse 15 after mill;The coarse granule of the V-type powder selector 4 exports Through airswept ball mill 5, the second cyclone separator 9, the second bag filter 10 and the second drag conveyor 13, the second bucket lifting Machine 14 is connect with phosphorus ore storehouse 15 after mill;The circulating air of first bag filter 7 is exported through first circulation wind turbine 8 and first row Gas vent 17 connects, and the outlet of first circulation wind turbine 8 is also connect with the wind-supplying mouth of V-type powder selector 4;Second bag filter 10 circulating air outlet is connect through second circulation wind turbine 11 with second row gas vent 18, and the outlet of second circulation wind turbine 11 is gone back and wind Sweep the glove compartment connection of ball mill 5.The hot-blast stove 16 is connect with the air inlet of V-type powder selector 4 and airswept ball mill 5 respectively, Dry heat is provided for the two.
It is using the technological process of above system:The phosphorus ore (moisture≤8%wt) of raw material phosphorus ore (≤10mm) is stored in Before mill in phosphorus ore storehouse 1, the raw material phosphorus ore in storehouse is expected in the first bucket elevator 3 by metering batcher 2 and is promoted to V Pre- graded operation is carried out in type powder selector 4.(granularity is adjustable according to production needs, and general control exists for fine powder in V-type powder selector 4 4mm or less) brought into the first cyclone separator 6 after the heated-air drying of hot-blast stove 16 successively by circulating air, dust inlet discharge Ground phosphate rock is unloaded to the first drag conveyor 12, and the primary mixture of 6 air outlet of the first cyclone separator brings first bag by air-flow Formula filter 8 carries out gas solid separation collection, is unloaded to the first drag conveyor 12 after the ground phosphate rock of collection, then defeated through the second scraper plate Send machine 13 send to the second bucket elevator 14 be promoted to mill after phosphorus ore storehouse 15 store;After the separation of the first bag filter 7 Most of to be discharged through first row gas vent 17 after circulating air is pressurizeed by first circulation wind turbine 8, fraction is recycled to V-type choosing and divides device 4 Wind-supplying mouth.
The coarse granule phosphorus ore of V-type powder selector 4 is discharged by coarse granule outlet in airswept ball mill 5 after heated-air drying to be ground Mill and drying, the ground phosphate rock after grinding enter the second cyclone separator 9, the discharge of 9 dust inlet of the second cyclone separator under negative pressure Ground phosphate rock unload to the second drag conveyor 13, the primary mixture of 9 air outlet of the second cyclone separator brings second by air-flow Bag filter 10 carries out gas solid separation collection, then unloads to the second drag conveyor 13 and is arrived through the promotion of the second bucket elevator 14 Phosphorus ore storehouse 15 is stored after mill.After circulating air after the separation of the second bag filter 10 is pressurizeed by second circulation wind turbine 11, greatly Part is discharged through second row gas vent 18, and the glove compartment conduct that fraction is recycled to airswept ball mill 5 helps blowing.Pre- classification and mill Drier (hot wind) while mine in hot-blast stove 16, which respectively enters, does phosphorus ore in V-type powder selector 4 and ball mill 5 It is dry.
The system pressure balance of V-type powder selector 4 is realized by controlling wind-supplying mouth gas pressure, when system pressure appearance is different It is dynamic, realize the adjusting of system pressure balance by adjusting the flow of wind-supplying mouth.Control drier import is positive pressure (18- 22kPa), temperature is at 120~450 DEG C.Ball mill gas powder discharge port pressure be tiny structure (- 3~0kPa), outlet temperature be 55~ 65℃.16 fuel of hot-blast stove uses diesel oil, natural gas or other fuel, drives and igniting with fuel is natural gas.Dry ground phosphate rock Moisture can be adjusted by adjusting the outlet desiccant temperature of V-type powder selector 4 and ball mill 5.

Claims (4)

1. a kind of phosphorus ore is classified in advance, air swept mill grinds system, which is characterized in that is given including phosphorus ore storehouse, metering before sequentially connected mill The product fine powder of material machine, the first bucket elevator and V-type powder selector, the V-type powder selector exports successively through the first cyclonic separation Device, the first bag filter, the first drag conveyor, the second drag conveyor, the second bucket elevator and phosphorus ore storehouse after mill connect It connects;The coarse granule outlet of the V-type powder selector is connect with airswept ball mill;The product phosphorus ore outlet of the airswept ball mill is successively Connect through the second cyclone separator, the second bag filter and the second drag conveyor, the second bucket elevator and phosphorus ore storehouse after mill It connects;First bag filter is connect through first circulation wind turbine with first row gas vent;Second bag filter is through Two circulating fans are connect with second row gas vent.
2. phosphorus ore as described in claim 1 is classified in advance, air swept mill grinds system, which is characterized in that hot-blast stove is selected with V-type respectively Powder device is connected with the air inlet of airswept ball mill.
3. phosphorus ore as claimed in claim 1 or 2 is classified in advance, air swept mill grinds system, which is characterized in that the first circulation wind The outlet of machine is also connect with the wind-supplying mouth of V-type powder selector.
4. phosphorus ore as claimed in claim 1 or 2 is classified in advance, air swept mill grinds system, which is characterized in that the second circulation wind The outlet of machine is also connect with the glove compartment of airswept ball mill outlet.
CN201721568178.1U 2017-11-20 2017-11-20 Air swept mill grinds system for classification in advance for phosphorus ore Active CN207786765U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721568178.1U CN207786765U (en) 2017-11-20 2017-11-20 Air swept mill grinds system for classification in advance for phosphorus ore

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Application Number Priority Date Filing Date Title
CN201721568178.1U CN207786765U (en) 2017-11-20 2017-11-20 Air swept mill grinds system for classification in advance for phosphorus ore

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CN207786765U true CN207786765U (en) 2018-08-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111637708A (en) * 2020-05-12 2020-09-08 中国神华煤制油化工有限公司 Wet material processing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111637708A (en) * 2020-05-12 2020-09-08 中国神华煤制油化工有限公司 Wet material processing system

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