CN102950055B - Calcium carbonate slurry wet grinding manufacture method - Google Patents

Calcium carbonate slurry wet grinding manufacture method Download PDF

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CN102950055B
CN102950055B CN201210400622.4A CN201210400622A CN102950055B CN 102950055 B CN102950055 B CN 102950055B CN 201210400622 A CN201210400622 A CN 201210400622A CN 102950055 B CN102950055 B CN 102950055B
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slurry
calcium carbonate
wet
discharge
feed
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CN102950055A (en
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吴仲德
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NINGBO CITY LIANCHENG MACHINERY CO Ltd
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NINGBO CITY LIANCHENG MACHINERY CO Ltd
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Abstract

The present invention relates to paper making equipment field, object is to provide a kind of calcium carbonate slurry wet grinding manufacture method and equipment.A kind of calcium carbonate slurry wet grinding manufacture method, it comprises the following steps: marble raw material clear water vibration washing; Marble raw material is broken into calcium carbonate granule by breaker; With magnetic attracting device, ferrous impurity is absorbed; Vibrosieve, the calcium carbonate granule that particle diameter is greater than 3mm re-starts fragmentation; Particle diameter is less than or equal to the calcium carbonate granule of 3mm, water and dispersant and puts into leading portion wet mill unit and carry out ground and mixed and become calcium carbonate slurry; By detecting adjustment clear water amount or calcium carbonate granule amount; Calcium carbonate slurry flows into the surge tank being provided with mixer and stores and stir and prevent from precipitating; Back segment wet mill unit carries out grinding the calcium carbonate slurry that obtains calcium carbonate granule particle diameter about 2um and sends into finished pot.This calcium carbonate slurry wet grinding manufacturing approach craft flow process is simple, equipment is not easy to wear, energy consumption is low and capital expenditure is little.

Description

Calcium carbonate slurry wet grinding manufacture method
Technical field
The present invention relates to paper making equipment field, especially a kind of calcium carbonate slurry wet grinding manufacture method and equipment.
Background technology
Calcium carbonate granule after being ground by marble is used as filler or the fabric of papermaking, and the calcium carbonate slurry that calcium carbonate and water mix is the important component part of paper pulp.Traditional calcium carbonate slurry often adopts dry grinding manufacture method, and the steps include: that marble raw material loading machine is transported to material charging region and drops in hopper, under the effect of reciprocal dispenser, raw material carries out vibration washing through tape transport to cleaning vibratory sieve; Raw material after cleaning, in I and II disintegrating machine, is broken into the particle being less than 50MM under mechanical force; Calcium carbonate granule after fragmentation is transferred band and distributing trolley delivers to stockyard storage in factory building; Conveyer belt is equipped with strong magnetic device for removing iron and steel impurity, and deduster is housed with meet the requirement of environmental protection at on-site; Fracture area is provided with the melt pit pond that melt pit water-level gauge is housed, and is responsible for supplements when water level is low by clear water; Water after fractional precipitation is for cleaning raw material, and the impurity washed down is by washing feed back helical feed to interim stockyard; Calcium carbonate granule after two-stage crushing is delivered to stockyard by distributing trolley conveyer belt and is carried out reasonable distribution stacking; During demand, the vibration blanking end of raw material bottom stockyard drops down onto conveyer belt; The holding vessel that level-sensing device is housed that calcium carbonate granule is delivered to milling zone by elevator is deposited do storage; When needing grinding, be stored in calcium carbonate granule in holding vessel after belt conveyor of weighing, again enter beater grinder and raw material is carried out fragmentation; Calcium carbonate granule after fragmentation is by chain elevator and conveying worm and rotary valve, and enter LC-GM1400 vertical dry grinding machine through feeding packing auger and to fall within the mill of dry mill in the heart, be ground into powder by rolling of three emery wheels, the powder of release mesh (≤325 order) is extracted out by the grader at dry mill top; The defective particle of granularity continues to grind at dry mill; Partial particulate can fall into feed back conveying worm, then is circulated back to dry mill by elevator before main frame and grinds; Weigh conveyer by VFC, measures and control the inlet amount of raw material; Dry mill main frame motor also adopts VFC, for adjusting the rotating speed of rotating disk to control the output of dry mill; Grader adopts VFC, ensures to extract out the powder of release mesh in order to control air quantity; Grinding emery wheel adopts hydraulic control, and its pressure can adjust according to actual needs; The qualified powder filtered out by the grader on dry mill top is sent to dust collection tank, because Action of Gravity Field powder falls into bottom collecting tank; Less powder can be extracted out with air by main air blower, to be sent by powder drop down onto bottom collecting tank by the effect of pocket type pulsed dust arrester, rapping apparatus and Air Reverse blowing apparatus; Conveying worm and rotary feeder are housed bottom collecting tank; By roots blower by powder Geldart-D particle in dry powder storehouse, wet-milling bubble slurry for wet-milling produce; Dry powder storehouse is equipped with level-sensing device or poidometer up and down, with the material level in metered dry powder storehouse.It is current that there is technological process complexity in calcium carbonate slurry dry grinding manufacture method, equipment is easy to wear, energy consumption is high and the high deficiency causing capital expenditure large of the large height of occupation area of equipment; Therefore, design that a kind of technological process is simple, equipment is not easy to wear, energy consumption is low and the calcium carbonate slurry wet grinding manufacture method that capital expenditure is little and equipment, becomes problem demanding prompt solution.
Summary of the invention
The object of the invention is to overcome that current calcium carbonate slurry dry grinding manufacture method exists technological process complexity, equipment is easy to wear, energy consumption is high and the high deficiency causing capital expenditure large of the large height of occupation area of equipment, providing that a kind of technological process is simple, equipment is not easy to wear, energy consumption is low and the calcium carbonate slurry wet grinding manufacture method that capital expenditure is little and equipment.
Concrete technical scheme of the present invention is:
A kind of calcium carbonate slurry wet grinding manufacture method, it comprises the following steps: (1) marble raw material is by reciprocating feeder clear water vibration washing; (2) the marble raw material after vibration washing is broken into calcium carbonate granule by breaker; (3) with magnetic attracting device, the ferrous impurity in calcium carbonate granule is absorbed; (4) calcium carbonate granule is through vibrosieve, and the calcium carbonate granule that particle diameter is greater than 3mm re-starts fragmentation; (4) by ratio requirement, particle diameter is less than or equal to the calcium carbonate granule of 3mm, water and dispersant to put into leading portion wet mill unit and carry out ground and mixed Cheng Gu containing 70% to 80% calcium carbonate and calcium carbonate granule particle diameter is less than or equal to 325 object calcium carbonate slurries; (5) detect the solid ratio calciferous of calcium carbonate slurry by mass flowmenter, namely control adjustment clear water amount or calcium carbonate granule amount automatically by Distributed Control System if any deviation; (6) calcium carbonate slurry flows into the surge tank being provided with mixer and stores and stir and prevent from precipitating; (7) calcium carbonate slurry in surge tank is sent into back segment wet mill unit and is carried out grinding the calcium carbonate slurry that obtains calcium carbonate granule particle diameter about 2um and send into finished pot.This calcium carbonate slurry wet grinding manufacturing approach craft flow process is simple, equipment is not easy to wear, energy consumption is low and capital expenditure is little.
As preferably, described by ratio requirement, particle diameter be less than or equal to the calcium carbonate granule of 3mm, water and dispersant and put into leading portion wet mill unit and carry out ground and mixed Cheng Gu containing 75% calcium carbonate and calcium carbonate granule particle diameter is less than or equal to 325 object calcium carbonate slurries.Admittedly containing 75% calcium carbonate and calcium carbonate granule particle diameter be less than or equal to 325 object calcium carbonate slurries be used as the filler of papermaking or fabric more suitable.
A kind of equipment realizing calcium carbonate slurry wet grinding manufacture method according to claim 1, comprise the reciprocating feeder being provided with feed hopper, the breaker that feed end is relative with the discharge end of reciprocating feeder, leading portion wet mill unit, back segment wet mill unit, the band elevator that feed end and discharge end are relative with the feed end of leading portion wet mill unit with the discharge end of breaker respectively, the surge tank being provided with mixer and centrifugal pump and liquid level gauge that feed end and discharge end are communicated with the feed end of back segment wet mill unit with the discharge end of leading portion wet mill unit respectively, be provided with mixer and the finished pot be communicated with the discharge end of back segment wet mill unit, supply water for reciprocating feeder and leading portion wet mill unit and be provided with the feed pipe of flowmeter and add for leading portion wet mill unit and back segment wet mill unit and send dispersant and the dispersant pipe being provided with flowmeter.The equipment realizing calcium carbonate slurry wet grinding manufacture method can make calcium carbonate slurry reach technological requirement effectively.
As preferably, described breaker comprises two jaw crushers, storage warehouse, accumulator tank, particle vibration sieve, three bucket elevators and three belt conveyors with magnetic attracting device; The discharge end of reciprocating feeder is relative with the feed end of First jaw crusher, and the two ends of First belt conveyor are relative with the feed end of First bucket elevator with the discharge end of First jaw crusher respectively; The discharge end of First bucket elevator is relative with the feed end of storage warehouse; The two ends of second belt conveyor are relative with the feed end of second bucket elevator with the discharge end of storage warehouse respectively; The discharge end of second bucket elevator is relative with the feed end of second jaw crusher, the feed end of particle vibration sieve is relative with the discharge end of second jaw crusher, and particle vibration sieve is provided with the particulate discharge end relative with the feed end of the 3rd bucket elevator and coarse grain discharge end; The discharge end of the 3rd bucket elevator is relative with the feed end of accumulator tank; The discharge end of accumulator tank is relative with the feed end of band elevator; The two ends of the 3rd belt conveyor are relative with the feed end of coarse grain discharge end and second bucket elevator respectively.Breaker is simple and practical.
As preferably, described leading portion wet mill unit comprising two wet milks, being provided with the transition tank of mixer and centrifugal pump, for detecting solid mass flowmenter calciferous in calcium carbonate slurry, delivery pump and five slurry vibration sieves; Described wet milk is provided with charging aperture and discharging opening, and slurry vibration sieve is provided with slurry import, screened stock outlet and slightly starches outlet; The discharge end of band elevator is relative with the charging aperture of First wet milk; The slurry import of First slurry vibration sieve is connected with the discharging opening of First wet milk and the feed end of transition tank respectively with screened stock outlet; The slurry import that the discharge end of transition tank is sieved with second slurry vibration respectively by mass flowmenter and the slurry import that the 3rd slurry vibration sieves are connected; The screened stock outlet of second slurry vibration sieve is connected with the charging aperture of second wet milk respectively with the screened stock outlet of the 3rd slurry vibration sieve; The thick slurry outlet of second slurry vibration sieve is connected with the charging aperture of First wet milk respectively with the thick slurry outlet of the 3rd slurry vibration sieve; The slurry import that discharging opening and the 4th slurry vibration of second wet milk sieve is connected; The slurry import that the screened stock outlet of the 4th slurry vibration sieve is sieved by delivery pump and the 5th slurry vibration is connected; The screened stock outlet of the 5th slurry vibration sieve is connected with the feed end of surge tank by delivery pump; Feed pipe is communicated with two wet milks respectively; Dispersant pipe is communicated with two wet milks respectively.Leading portion wet mill unit is simple and practical.
As preferably, described back segment wet mill unit comprises two wet milks, electromagnetic flowmeter, deironing filter, three delivery pumps and three slurry vibration sieves; Described wet milk is provided with charging aperture and discharging opening, and slurry vibration sieve is provided with slurry import, screened stock outlet and slightly starches outlet; The discharge end of surge tank is connected by the charging aperture of electromagnetic flowmeter with First wet milk; The slurry import that discharging opening and the First slurry vibration of First wet milk sieve is connected; The screened stock outlet of First slurry vibration sieve is connected by the charging aperture of First delivery pump with second wet milk; The slurry import that the discharging opening of second wet milk is sieved with second slurry vibration respectively by second delivery pump and deironing filter and the slurry import that the 3rd slurry vibration sieves are connected; The screened stock outlet of second slurry vibration sieve is connected with finished pot respectively by the 3rd delivery pump with the screened stock outlet of the 3rd slurry vibration sieve; Dispersant pipe is communicated with two wet milks respectively.Back segment wet mill unit is simple and practical.
As preferably, described wet milk comprise bottom be provided with abrasive media outlet staving, be provided with the upper cover, the shaft with upper cover pivot joint, several stirring rod be fixedly connected with the gusset of shaft, drive unit that output is fixedly connected with the upper end of shaft and the door of being located at discharge outlet that are fixedly connected with dispersant interface and with the upper end of staving into water interface and sieve; The inner side of described staving is arranged with several wear resistant lugs; The charging aperture of described wet milk is positioned at and covers, and discharging opening is positioned at the bottom of staving.During the work of this wet milk, in staving, be placed with abrasive media (ceramic bead); Be less than or equal to after the calcium carbonate granule of 3mm, water and dispersant or calcium carbonate slurry enter wet milk by the particle diameter of ratio requirement and mix with abrasive media, drive unit drives stirring rod High Rotation Speed to stir, calcium carbonate granule and abrasive media strong collision and shearing, calcium carbonate slurry and abrasive media collide with staving and wear resistant lug and rebound under centrifugal action simultaneously, produce a large amount of irregular eddy current, make calcium carbonate granule obtain grinding refinement.Wet milk grinding effect is good.
As preferably, described staving comprises that gusset shape of cross section is circular outer barrel, shape of cross section is the interior bucket of regular polygon and the wearing plate equal with the regular polygon limit number of interior bucket; The interior gusset of every block wearing plate and interior bucket while be fixedly connected with; Cooling water deflector is provided with between described outer barrel and inner barr; Several described wear resistant lug arranged in rows, the row of wear resistant lug is equal with the limit number of interior bucket, often arranges wear resistant lug and is fixedly connected with the abutting end of adjacent two pieces of wearing plates respectively.In regular polygon, bucket can strengthen grinding effect; Wearing plate can extend the service life of staving.
As preferably, several described stirring rod are arranged above and below into and are uniformly distributed along the circumference two layers to six layers, and levels stirring rod is staggered and is fixedly connected with the gusset of shaft bottom respectively.The arrangement mode of stirring rod can strengthen grinding effect.
As preferably, on described, be covered with abrasive media import and the impeller for the import of opening and closing of fault abrasive media.Wheel rotor can make abrasive media import opening and closing of fault, loads abrasive media convenient.
Compared with prior art, the invention has the beneficial effects as follows: one. this calcium carbonate slurry wet grinding manufacturing approach craft flow process is simple, equipment is not easy to wear, energy consumption is low and capital expenditure is little; Admittedly containing 75% calcium carbonate and calcium carbonate granule particle diameter be less than or equal to 325 object calcium carbonate slurries be used as the filler of papermaking or fabric more suitable.Two. the equipment realizing calcium carbonate slurry wet grinding manufacture method can make calcium carbonate slurry reach technological requirement effectively.Three. breaker, leading portion wet mill unit, back segment wet mill unit are simple and practical.Four. in regular polygon, bucket can strengthen grinding effect; Wearing plate can extend the service life of staving.Five. the arrangement mode of stirring rod can strengthen grinding effect.Six. wheel rotor can make abrasive media import opening and closing of fault, loads abrasive media convenient.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is a kind of structural representation of wet milk in Fig. 1.
In figure: feed pipe-1, dispersant pipe-2, reciprocating feeder-3, feed hopper-31, surge tank-4, centrifugal pump-41, liquid level gauge-42, belt conveyor-5, magnetic attracting device-51, particle vibration sieve-6, particulate discharge end-61, coarse grain discharge end-62, wet milk-7, charging aperture-71, discharging opening-72, abrasive media outlet-73, staving-74, outer barrel-741, interior bucket-742, wearing plate-743, water inlet interface-75, dispersant interface-76, upper cover-77, shaft-78, stirring rod-79, door sieve-710, wear resistant lug-711, abrasive media import-712, impeller-713, motor-714, reduction box-715, shaft coupling-716, cooling water deflector-717, slurry vibration sieve-8, slurry import-81, screened stock outlet-82, thick slurry outlet-83, band elevator-11, finished pot-12, jaw crusher-13, storage warehouse-14, accumulator tank-15, bucket elevator-16, transition tank-17, mass flowmenter-18, delivery pump-19, electromagnetic flowmeter-20, deironing filter-21.
Detailed description of the invention
Below in conjunction with shown in accompanying drawing, the present invention is described further.
A kind of calcium carbonate slurry wet grinding manufacture method, it comprises the following steps: (1) marble raw material is by reciprocating feeder clear water vibration washing; (2) the marble raw material after vibration washing is broken into calcium carbonate granule by breaker; (3) with magnetic attracting device, the ferrous impurity in calcium carbonate granule is absorbed; (4) calcium carbonate granule is through vibrosieve, and the calcium carbonate granule that particle diameter is greater than 3mm re-starts fragmentation; (4) by ratio requirement, particle diameter is less than or equal to the calcium carbonate granule of 3mm, water and dispersant to put into leading portion wet mill unit and carry out ground and mixed Cheng Gu containing 70% to 80% calcium carbonate and calcium carbonate granule particle diameter is less than or equal to 325 object calcium carbonate slurries; (5) detect the solid ratio calciferous of calcium carbonate slurry by mass flowmenter, namely control adjustment clear water amount or calcium carbonate granule amount automatically by Distributed Control System if any deviation; (6) calcium carbonate slurry flows into the surge tank being provided with mixer and stores and stir and prevent from precipitating; (7) calcium carbonate slurry in surge tank is sent into back segment wet mill unit and is carried out grinding the calcium carbonate slurry that obtains calcium carbonate granule particle diameter about 2um and send into finished pot.
In the present embodiment, described by ratio requirement, particle diameter be less than or equal to the calcium carbonate granule of 3mm, water and dispersant and put into leading portion wet mill unit and carry out ground and mixed Cheng Gu containing 75% calcium carbonate and calcium carbonate granule particle diameter is less than or equal to 325 object calcium carbonate slurries.
As accompanying drawing 1, shown in accompanying drawing 2: a kind of equipment realizing calcium carbonate slurry wet grinding manufacture method according to claim 1, comprise the reciprocating feeder 3 with feed hopper 31, the breaker that feed end is relative with the discharge end of reciprocating feeder 3, leading portion wet mill unit, back segment wet mill unit, the band elevator 11 that feed end and discharge end are relative with the feed end of leading portion wet mill unit with the discharge end of breaker respectively, the surge tank 4 with mixer and centrifugal pump 41 and liquid level gauge 42 that feed end and discharge end are communicated with the feed end of back segment wet mill unit with the discharge end of leading portion wet mill unit respectively, there is mixer and the finished pot 12 be communicated with the discharge end of back segment wet mill unit, supply water for reciprocating feeder 3 and leading portion wet mill unit and there is the feed pipe 1 of flowmeter and add for leading portion wet mill unit and back segment wet mill unit and send dispersant and the dispersant pipe 2 with flowmeter.
Described breaker comprises two jaw crushers 13, storage warehouse 14, accumulator tank 15, particle vibration sieve 6, three bucket elevators 16 and three belt conveyors 5 with magnetic attracting device 51; Described magnetic attracting device 51 is electromagnet; The discharge end of reciprocating feeder 3 is relative with the feed end of First jaw crusher 13, and the two ends of First belt conveyor 5 are relative with the feed end of First bucket elevator 16 with the discharge end of First jaw crusher 13 respectively; The discharge end of First bucket elevator 16 is relative with the feed end of storage warehouse 14; The two ends of second belt conveyor 5 are relative with the feed end of second bucket elevator 16 with the discharge end of storage warehouse 14 respectively; The discharge end of second bucket elevator 16 is relative with the feed end of second jaw crusher 13, the feed end of particle vibration sieve 6 is relative with the discharge end of second jaw crusher 13, and particle vibration sieve 6 has the particulate discharge end 61 relative with the feed end of the 3rd bucket elevator 16 and coarse grain discharge end 62; The discharge end of the 3rd bucket elevator 16 is relative with the feed end of accumulator tank 15; The discharge end of accumulator tank 15 is relative with the feed end of band elevator 11; The two ends of the 3rd belt conveyor 5 are relative with the feed end of coarse grain discharge end 62 and second bucket elevator 16 respectively.
Described leading portion wet mill unit comprising two wet milks 7, having the transition tank 17 of mixer and centrifugal pump 41, for detecting solid mass flowmenter 18 calciferous in calcium carbonate slurry, delivery pump 19 and five slurry vibration sieves 8; Described wet milk 7 has charging aperture 71 and discharging opening 72, and slurry vibration sieve 8 has slurry import 81, screened stock outlet 82 and the outlet 83 of thick slurry; The discharge end of band elevator 11 is relative with the charging aperture 71 of First wet milk 7; The slurry import 81 of First slurry vibration sieve 8 is connected with the discharging opening 72 of First wet milk 7 and the feed end of transition tank 17 respectively with screened stock outlet 82; The discharge end of transition tank 17 by mass flowmenter 18 sieve with second slurry vibration respectively 8 slurry import 81 and the slurry import 81 of sieving 8 of the 3rd slurry vibration be connected; The screened stock outlet 82 of second slurry vibration sieve 8 is connected with the charging aperture 71 of second wet milk 7 respectively with the screened stock outlet 82 of the 3rd slurry vibration sieve 8; The thick slurry outlet 83 of second slurry vibration sieve 8 is connected with the charging aperture 71 of First wet milk 7 respectively with the thick slurry outlet 83 of the 3rd slurry vibration sieve 8; The slurry import 81 that discharging opening 72 and the 4th slurry vibration of second wet milk 7 sieve 8 is connected; The slurry import 81 that the screened stock outlet 82 of the 4th slurry vibration sieve 8 sieves 8 by delivery pump 19 and the 5th slurry vibration is connected; The screened stock outlet 82 of the 5th slurry vibration sieve 8 is connected with the feed end of surge tank 4 by delivery pump 19; Feed pipe 1 is communicated with two wet milks 7 respectively; Dispersant pipe 2 is communicated with two wet milks 7 respectively.
Described back segment wet mill unit comprises two wet milks 7, electromagnetic flowmeter 20, deironing filter 21, three delivery pumps 19 and three slurry vibration sieves 8; Described wet milk 7 has charging aperture 71 and discharging opening 72, and slurry vibration sieve 8 has slurry import 81, screened stock outlet 82 and the outlet 83 of thick slurry; The discharge end of surge tank 4 is connected with the charging aperture 71 of First wet milk 7 by electromagnetic flowmeter 20; The slurry import 81 that discharging opening 72 and the First slurry vibration of First wet milk 7 sieve 8 is connected; The screened stock outlet 82 of First slurry vibration sieve 8 is connected with the charging aperture 71 of second wet milk 7 by First delivery pump 19; The discharging opening 72 of second wet milk 7 by second delivery pump 19 and deironing filter 21 sieve with second slurry vibration respectively 8 slurry import 81 and the slurry import 81 of sieving 8 of the 3rd slurry vibration be connected; The screened stock outlet 82 of second slurry vibration sieve 8 is connected with finished pot 12 respectively by the 3rd delivery pump 19 with the screened stock outlet 82 of the 3rd slurry vibration sieve 8; Dispersant pipe 2 is communicated with two wet milks 7 respectively.
Described wet milk 7 comprise bottom have abrasive media outlet 73 staving 74, have be connected into water interface 75 with dispersant interface 76 and with the upper end screw of staving 74 upper cover 77, sieve 710 with upper cover 77 by the shaft 78 of bearing hinge joint, several stirring rod 79 be connected with the gusset screw of shaft 78, drive unit that output is fixedly connected with the upper end of shaft 78 and the door of being located at discharge outlet 72; The interior gusset of described staving 74 has several wear resistant lugs 711; The charging aperture 71 of described wet milk is positioned on upper cover 77, and discharging opening 72 is positioned at the bottom of staving 74.Described upper cover 77 has abrasive media import 712 and the impeller 713 for opening and closing of fault abrasive media import 712.
In the present embodiment, described drive unit comprises the shaft coupling 716 that motor 714, reduction box 715 and two ends are connected with the output shaft of motor 714 and the input axle key of reduction box 715 respectively; The upper end of shaft 78 is connected with the output key of reduction box 715.
In the present embodiment, described staving 74 comprises that gusset shape of cross section is circular outer barrel 741, shape of cross section is the interior bucket 742 of octagon and the eight piece wearing plates 743 equal with the octagon limit number of interior bucket 742; Every block wearing plate 743 is connected with one side screw of the interior gusset of interior bucket 742; Between described outer barrel 741 and interior bucket 742, there is cooling water deflector 717; Described wear resistant lug 711 has 48,48 wear resistant lug 711 arranged in rows, the row of wear resistant lug 711 is equal with the limit number of interior bucket 742 is eight rows, and often arranging wear resistant lug 711 has six, often arranges wear resistant lug 711 and is connected with the abutting end screw of adjacent two pieces of wearing plates 743 respectively.
Several described stirring rod 79 are arranged above and below into and are uniformly distributed along the circumference two layers to six layers, and levels stirring rod 79 is staggered and is fixedly connected with the gusset of shaft 78 bottom respectively; In the present embodiment, described stirring rod 79 has 18,18 stirring rod 79 six every layer be arranged above and below into three layers that are uniformly distributed along the circumference, levels stirring rod 79 is staggered and is connected with the gusset screw of shaft 78 bottom respectively.
The equipment realizing calcium carbonate slurry wet grinding manufacture method is controlled by Distributed Control System (DCS), and marble raw material is by cleaning used by oscillating screen clear water vibration washing; Marble raw material after vibration washing is broken into calcium carbonate granule by being absorbed by the First belt conveyor 5 that conveyer belt is equipped with magnetic attracting device 51 and send into second jaw crusher 13 by ferrous impurity after First jaw crusher 13 fragmentation; Calcium carbonate granule sieves through particle vibration sieve 6, and the calcium carbonate granule that size is less than 3mm sieves out to be delivered to holding vessel through bucket elevator 16 and store, and the calcium carbonate granule that size is more than or equal to 3mm sends back to second jaw crusher 13 and re-starts fragmentation; A certain amount of calcium carbonate granule is sent into leading portion First wet milk 7 and adds First wet milk 7 by the water of ratio requirement and dispersant and carry out elementary grinding, under the effect of high speed strong agitation, be mixed into admittedly containing the calcium carbonate slurry of 75% calcium carbonate; Calcium carbonate slurry after elementary grinding flows into the transition tank 17 with mixer and stores and stirs and prevent from precipitating after slurry vibration sieve 8 screening; The solid ratio calciferous of the slurry detected in transition tank 17 by mass flowmenter 18, namely controls the calcium carbonate granule of adjustment First wet milk 7 or the addition of water automatically by Distributed Control System if any deviation; The slurry that proportioning is qualified enter leading portion second wet milk 7 grind and through door sieve 710 screening, calcium carbonate granule particle diameter be less than or equal to the qualified calcium carbonate slurry delivery pump-19 of 325 object squeeze into the surge tank 4 with mixer store and stirs prevent precipitate; Slurry in surge tank 4 is sent into back segment First wet milk 7 through centrifugal pump 41 and is ground, calcium carbonate slurry after First wet milk 7 grinds is driven into second wet milk 7 and grinds, by the power division of wet milk 7 at different levels, the particle diameter of the final calcium carbonate granule in the calcium carbonate slurry after last wet milk 7 wet-milling is about 2um; Deironing filter 21 can ferrous impurity in filtering calcium carbonate slurry.
When wet milk 7 works, in staving 74, be placed with abrasive media (ceramic bead); Be less than or equal to the calcium carbonate granule of 3mm, water and dispersant by the particle diameter of ratio requirement to enter after First wet milk 7 or calcium carbonate slurry enter all the other wet milks 7 and mix with abrasive media, opening motor 714 drives stirring rod 79 High Rotation Speed to stir through reduction box 715, shaft 78, calcium carbonate granule and abrasive media strong collision and shearing, calcium carbonate slurry and abrasive media collide with wearing plate 743 and wear resistant lug 711 and rebound under centrifugal action simultaneously, produce a large amount of irregular eddy current, make calcium carbonate granule obtain grinding refinement; Circulating cooling water cooling can be passed between the outer barrel 741 and interior bucket 742 of staving 74.
The invention has the beneficial effects as follows: this calcium carbonate slurry wet grinding manufacturing approach craft flow process is simple, equipment is not easy to wear, energy consumption is low, wet grinding substitutes dry grinding energy consumption and reduces by 2% to 5%, and capital expenditure is little: factory building height is reduced to≤10M from >=16M; Plant area reduces to≤200 ㎡ from >=400 ㎡; Main equipment given tensile load is reduced to≤530KN from >=2200KN; The abrasive media of wet grinding mill adopts the ceramic bead of 7000 yuan/ton, and the abrasive media of dry grinding machine is the zirconium pearl of 150,000 yuan/ton.Admittedly containing 75% calcium carbonate and calcium carbonate granule particle diameter be less than or equal to 325 object calcium carbonate slurries be used as the filler of papermaking or fabric more suitable.The equipment realizing calcium carbonate slurry wet grinding manufacture method can make calcium carbonate slurry reach technological requirement effectively.Breaker, leading portion wet mill unit, back segment wet mill unit are simple and practical.In regular polygon, bucket can strengthen grinding effect; Wearing plate can extend the service life of staving.The arrangement mode of stirring rod can strengthen grinding effect.Wheel rotor can make abrasive media import opening and closing of fault convenient.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.All like this to the apparent amendment of the technical staff in described field, by be included in this claim scope within.

Claims (9)

1. a calcium carbonate slurry wet grinding manufacture method, is characterized in that, it comprises the following steps: (1) marble raw material is by reciprocating feeder clear water vibration washing, (2) the marble raw material after vibration washing is broken into calcium carbonate granule by breaker, (3) with magnetic attracting device, the ferrous impurity in calcium carbonate granule is absorbed, (4) calcium carbonate granule is through vibrosieve, and the calcium carbonate granule that particle diameter is greater than 3mm re-starts fragmentation, (4) by ratio requirement, particle diameter is less than or equal to the calcium carbonate granule of 3mm, water and dispersant to put into leading portion wet mill unit and carry out ground and mixed Cheng Gu containing 70% to 80% calcium carbonate and calcium carbonate granule particle diameter is less than or equal to 325 object calcium carbonate slurries, (5) detect the solid ratio calciferous of calcium carbonate slurry by mass flowmenter, namely control adjustment clear water amount or calcium carbonate granule amount automatically by Distributed Control System if any deviation, (6) calcium carbonate slurry flows into the surge tank being provided with mixer and stores and stir and prevent from precipitating, (7) calcium carbonate slurry in surge tank is sent into back segment wet mill unit and is carried out grinding the calcium carbonate slurry that obtains calcium carbonate granule particle diameter about 2um and send into finished pot, the equipment of the calcium carbonate slurry wet grinding manufacture method described in realization, comprise the reciprocating feeder being provided with feed hopper, the breaker that feed end is relative with the discharge end of reciprocating feeder, leading portion wet mill unit, back segment wet mill unit, the band elevator that feed end and discharge end are relative with the feed end of leading portion wet mill unit with the discharge end of breaker respectively, the surge tank being provided with mixer and centrifugal pump and liquid level gauge that feed end and discharge end are communicated with the feed end of back segment wet mill unit with the discharge end of leading portion wet mill unit respectively, be provided with mixer and the finished pot be communicated with the discharge end of back segment wet mill unit, supply water for reciprocating feeder and leading portion wet mill unit and be provided with the feed pipe of flowmeter and add for leading portion wet mill unit and back segment wet mill unit and send dispersant and the dispersant pipe being provided with flowmeter.
2. calcium carbonate slurry wet grinding manufacture method according to claim 1, is characterized in that: described by ratio requirement, particle diameter be less than or equal to the calcium carbonate granule of 3mm, water and dispersant and put into leading portion wet mill unit and carry out ground and mixed Cheng Gu containing 75% calcium carbonate and calcium carbonate granule particle diameter is less than or equal to 325 object calcium carbonate slurries.
3. calcium carbonate slurry wet grinding manufacture method according to claim 1, is characterized in that: described breaker comprises two jaw crushers, storage warehouse, accumulator tank, particle vibration sieve, three bucket elevators and three belt conveyors with magnetic attracting device; The discharge end of reciprocating feeder is relative with the feed end of First jaw crusher, and the two ends of First belt conveyor are relative with the feed end of First bucket elevator with the discharge end of First jaw crusher respectively; The discharge end of First bucket elevator is relative with the feed end of storage warehouse; The two ends of second belt conveyor are relative with the feed end of second bucket elevator with the discharge end of storage warehouse respectively; The discharge end of second bucket elevator is relative with the feed end of second jaw crusher, the feed end of particle vibration sieve is relative with the discharge end of second jaw crusher, and particle vibration sieve is provided with the particulate discharge end relative with the feed end of the 3rd bucket elevator and coarse grain discharge end; The discharge end of the 3rd bucket elevator is relative with the feed end of accumulator tank; The discharge end of accumulator tank is relative with the feed end of band elevator; The two ends of the 3rd belt conveyor are relative with the feed end of coarse grain discharge end and second bucket elevator respectively.
4. calcium carbonate slurry wet grinding manufacture method according to claim 1, is characterized in that: described leading portion wet mill unit comprising two wet milks, being provided with the transition tank of mixer and centrifugal pump, for detecting solid mass flowmenter calciferous in calcium carbonate slurry, delivery pump and five slurry vibration sieves; Described wet milk is provided with charging aperture and discharging opening, and slurry vibration sieve is provided with slurry import, screened stock outlet and slightly starches outlet; The discharge end of band elevator is relative with the charging aperture of First wet milk; The slurry import of First slurry vibration sieve is connected with the discharging opening of First wet milk and the feed end of transition tank respectively with screened stock outlet; The slurry import that the discharge end of transition tank is sieved with second slurry vibration respectively by mass flowmenter and the slurry import that the 3rd slurry vibration sieves are connected; The screened stock outlet of second slurry vibration sieve is connected with the charging aperture of second wet milk respectively with the screened stock outlet of the 3rd slurry vibration sieve; The thick slurry outlet of second slurry vibration sieve is connected with the charging aperture of First wet milk respectively with the thick slurry outlet of the 3rd slurry vibration sieve; The slurry import that discharging opening and the 4th slurry vibration of second wet milk sieve is connected; The slurry import that the screened stock outlet of the 4th slurry vibration sieve is sieved by delivery pump and the 5th slurry vibration is connected; The screened stock outlet of the 5th slurry vibration sieve is connected with the feed end of surge tank by delivery pump; Feed pipe is communicated with two wet milks respectively; Dispersant pipe is communicated with two wet milks respectively.
5. calcium carbonate slurry wet grinding manufacture method according to claim 1, is characterized in that: described back segment wet mill unit comprises two wet milks, electromagnetic flowmeter, deironing filter, three delivery pumps and three slurry vibration sieves; Described wet milk is provided with charging aperture and discharging opening, and slurry vibration sieve is provided with slurry import, screened stock outlet and slightly starches outlet; The discharge end of surge tank is connected by the charging aperture of electromagnetic flowmeter with First wet milk; The slurry import that discharging opening and the First slurry vibration of First wet milk sieve is connected; The screened stock outlet of First slurry vibration sieve is connected by the charging aperture of First delivery pump with second wet milk; The slurry import that the discharging opening of second wet milk is sieved with second slurry vibration respectively by second delivery pump and deironing filter and the slurry import that the 3rd slurry vibration sieves are connected; The screened stock outlet of second slurry vibration sieve is connected with finished pot respectively by the 3rd delivery pump with the screened stock outlet of the 3rd slurry vibration sieve; Dispersant pipe is communicated with two wet milks respectively.
6. the calcium carbonate slurry wet grinding manufacture method according to claim 4 or 5, is characterized in that: described wet milk comprise bottom be provided with abrasive media outlet staving, be provided with the upper cover, the shaft with upper cover pivot joint, several stirring rod be fixedly connected with the gusset of shaft, drive unit that output is fixedly connected with the upper end of shaft and the door of being located at discharge outlet that are fixedly connected with dispersant interface and with the upper end of staving into water interface and sieve; The inner side of described staving is arranged with several wear resistant lugs; The charging aperture of described wet milk is positioned at and covers, and discharging opening is positioned at the bottom of staving.
7. calcium carbonate slurry wet grinding manufacture method according to claim 6, is characterized in that: described staving comprises that gusset shape of cross section is circular outer barrel, shape of cross section is the interior bucket of regular polygon and the wearing plate equal with the regular polygon limit number of interior bucket; The interior gusset of every block wearing plate and interior bucket while be fixedly connected with; Cooling water deflector is provided with between described outer barrel and inner barr; Several described wear resistant lug arranged in rows, the row of wear resistant lug is equal with the limit number of interior bucket, often arranges wear resistant lug and is fixedly connected with the abutting end of adjacent two pieces of wearing plates respectively.
8. calcium carbonate slurry wet grinding manufacture method according to claim 6, it is characterized in that: several described stirring rod are arranged above and below into and are uniformly distributed along the circumference two layers to six layers, and levels stirring rod is staggered and is fixedly connected with the gusset of shaft bottom respectively.
9. calcium carbonate slurry wet grinding manufacture method according to claim 6, is characterized in that: be covered with abrasive media import and the impeller for the import of opening and closing of fault abrasive media on described.
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