CN111957425B - Flotation pretreatment equipment - Google Patents
Flotation pretreatment equipment Download PDFInfo
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- CN111957425B CN111957425B CN202010825101.8A CN202010825101A CN111957425B CN 111957425 B CN111957425 B CN 111957425B CN 202010825101 A CN202010825101 A CN 202010825101A CN 111957425 B CN111957425 B CN 111957425B
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- 238000005188 flotation Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000000463 material Substances 0.000 claims abstract description 56
- 238000012216 screening Methods 0.000 claims abstract description 33
- 239000002245 particle Substances 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 5
- 238000007667 floating Methods 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 5
- 238000002203 pretreatment Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000002689 soil Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract 3
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 208000034699 Vitreous floaters Diseases 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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Abstract
The invention provides a flotation pretreatment device, and belongs to the technical field of ore flotation devices. The technical scheme is as follows: the screening and washing machine comprises an ore pulp modifying machine and a screening and washing machine, wherein the screening and washing machine comprises a box body with an open upper end and a sealed lower end, the interior of the box body is divided into a screening bin and a precipitation bin through a baffle plate, a material bin is arranged below the screening bin, the material bin is connected with the precipitation bin through a sieve plate, a screening mechanism is arranged in the screening bin, a water treatment device is arranged at the upper part of a precipitation tank, a water inlet of the water treatment device is connected with the box body, a water outlet of the water treatment device is communicated with the material bin through a connecting pipe and is positioned at the upper part of the material bin, a discharge port is arranged at the bottom of the material bin, the discharge port is communicated with a feed inlet of the ore pulp modifying machine through a discharge pipe, and a feed pump is arranged on the discharge pipe; the connecting pipe is connected with a water source and is provided with a valve. The invention has the beneficial effects that: the ore feed is pre-treated prior to entering the flotation equipment to screen out large particle impurities and attached soil.
Description
Technical Field
The invention relates to the technical field of ore flotation equipment, in particular to flotation pretreatment equipment.
Background
As the degree of depletion of the ore increases, the particles of the ore become smaller and smaller; and the mechanization degree of the comprehensive mining mode is improved, so that ore pulp impurities are more and the argillization is serious before the ore pulp is selected. The prior flotation process singly attaches importance to the flotation operation and neglects the pretreatment of ore pulp before flotation, and part of ore dressing plants adopt screening and desliming equipment, but the effect is poor. Therefore, there is a need for pre-treatment of the ore before the slurry enters the flotation equipment, on the one hand to screen out large particle impurities in the ore material and on the other hand to remove the attached soil and other floaters from the ore.
Disclosure of Invention
The invention aims to provide a flotation pretreatment device which pretreats ore raw materials before ore pulp enters a flotation device so as to screen out large-particle impurities in the ore, soil attached to the ore and other flotage.
The invention is realized by the following measures: a flotation pretreatment device comprises a pulp modifying machine and is characterized by also comprising a screening washer connected with a feed inlet of the pulp modifying machine, the screening and washing machine comprises a box body with an open upper end and a sealed lower end, the interior of the box body is divided into a screening bin and a settling bin by a baffle plate, a material bin is arranged below the screening bin, the material bin is connected with the screening bin through a screen plate, a screening mechanism is arranged in the screening bin, a water treatment device is arranged at the upper part of the sedimentation tank, a water inlet of the water treatment equipment is connected with the box body, a water outlet of the water treatment equipment is communicated with the material bin through a connecting pipe and is positioned at the upper part of the material bin, the bottom of the material bin is provided with a discharge hole, the discharge hole is communicated with a feed inlet of the ore pulp upgrading machine through a discharge pipe, and a material pump is arranged on the discharge pipe;
the connecting pipe is connected with a water source and is provided with a valve. The junction of connecting pipe and water treatment facilities is provided with water pump one, the connecting pipe with the junction at water source is provided with water pump two, and the junction all is provided with the valve, water in the box passes through after the connecting pipe is filled up, can temporarily close the connecting pipe with the valve at the junction at water source uses through the water self-loopa of box, be provided with the fluviograph in the water tank, control through the fluviograph the connecting pipe with opening and closing of the junction valve at water source guarantees water in the box is in suitable height all the time, and prior art is all adopted in the control of fluviograph and valve, and the valve can adopt the valve of control flow, the water pump can adopt the booster pump. The water treatment equipment is mainly used for filtering particles in water and purifying other impurities.
Screening mechanism includes the conical screen bucket, the conical screen bucket includes big plectane and small circle board, the round bar that sets up through a plurality of slope of circumference equipartition between the edge of big plectane and small circle board is connected, be provided with the pivot between big plectane and the small circle board, be located the pivot of big plectane one end is stretched out the box is connected with the motor that has the reduction gear, a plurality of the one end of round bar is provided with the rectangle frame, be provided with the door on the rectangle frame, the first portion of conical screen bucket is higher than the baffle, the sieve mesh internal diameter of sieve is with adjacent two the interval of round bar is the same.
The outside of little plectane is provided with annular boss, it has two fan-shaped through-holes to open with one heart on the little plectane, the box be provided with annular boss complex counter bore, annular boss rotates the setting and is in the main aspects of counter bore, the outside of box is provided with incomplete feed bin, incomplete feed bin passes through counter bore and two fan-shaped through-hole with the toper sieve bucket intercommunication, the bottom of incomplete feed bin is provided with incomplete material mouth, the last threaded connection that passes through of incomplete feed bin is provided with the screw rod, the screw rod is located the inside one end of incomplete feed bin is provided with the closing plate, the external diameter of closing plate is greater than fan-shaped through-hole's internal diameter, the other end of screw rod is provided with drive arrangement. The driving device can be a hand wheel or a motor, the sealing plate is used for sealing the two fan-shaped through holes, and when the sealing plate is opened, the two fan-shaped through holes can be used for discharging the residual materials in the conical screen barrel.
One end of the sedimentation bin, which is far away from the baffle, is provided with a first partition plate, the first partition plate and the inner wall of the box body form a floating bin, the lower part of the floating bin is provided with a floating outlet, and the upper end face of the first partition plate is lower than the box body. This facilitates the discharge of the floating objects.
The box is provided with a scraper mechanism above the sedimentation bin, the scraper mechanism is arranged on the box body in a rotating mode and comprises a conveying belt on the box body, a plurality of scraper blades are arranged on the conveying belt and located in the box body, the scraper blades below the conveying belt stretch into the box body, and the conveying belt is driven by a motor II.
The middle of the sieve plate is high, and the two ends of the sieve plate are low. Make things convenient for passing through of material like this the sieve discharges to because rivers are followed the below of sieve gets into, rivers have certain velocity of flow, when on the sieve, can with material on the sieve dashes, can wash the mud on the material on the one hand, and on the other hand can also prevent the sieve blocks up, the material discharge after the slope of sieve is convenient for dash.
The ore pulp modifying machine comprises a barrel body, wherein three layers of second partition plates with straight slotted holes are arranged in the barrel body, a stirring shaft is concentrically and rotatably arranged in the barrel body, and a stirrer is arranged on the stirring shaft and on the second partition plate on each layer;
the baffle is two go up and be located the inner wall of staving with all be provided with circular recess between the agitator, circular recess circumference equipartition has four, circumference equipartition has 4 fan-shaped holes on the circular recess, it is provided with driven (mixing) shaft to rotate on the circular recess, be provided with circular agitator on the driven (mixing) shaft, circumference equipartition has four fan-shaped breachs on the circular agitator, the size area of fan-shaped breach with the size of fan-shaped hole, circular agitator sets up in the circular recess, the upper end of (mixing) shaft stretches out the staving is connected with motor three that has the reduction gear, the (mixing) shaft with be connected through the drive belt respectively between the driven (mixing) shaft. Any side of the fan-shaped hole is provided with an extrusion groove communicated with the fan-shaped hole, so that on one hand, large particles can be extruded and crushed, and on the other hand, the adhesion effect of flotation reagents and mineral particles can be increased through extrusion.
Through the agitator with circular agitator rubs the effect to the surface production of ore pulp, further gets rid of the oxide layer and the fine mud on ore pulp granule surface, makes ore pulp granule surface form fresh face, through the dual stirring of agitator and circular agitator, makes the ore pulp flow under being in irregular orbit, has increased the area of contact of flotation medicament and ore grain, has improved the absorption to the medicament.
The stirrer is wavy and is composed of two sections of arc-shaped plates, and the rotation direction of the stirrer ensures that the concave surface of the outer end arc-shaped plate is close to the circular stirrer.
The top of staving is provided with sealed annular storehouse, the below in annular storehouse is provided with a plurality of atomizing nozzle, the top in annular storehouse sets up the inlet pipe, the inlet pipe is connected with atomizing device, annular storehouse passes through the bracing piece to be fixed on the staving, atomizing nozzle is located directly over circular agitator. The feed pipe is used for introducing gas or flotation agents.
The lower part of the settling bin is low in the middle and high at two ends, and a sewage draining outlet is arranged at the lower part. A filter plate for water purification is arranged in the sedimentation bin and between the water treatment equipment and the baffle plate. The filter plate is lower than the first partition plate.
A pulp pretreatment method using the flotation pretreatment equipment comprises the following steps:
step (1), introducing water into the box body through the connecting pipe, inverting the ore raw material into the conical sieve barrel when water passes through the baffle, starting the motor I, enabling small-particle ores to fall onto the sieve plate and fall into the material bin through sieve holes, continuously injecting water into the box body, enabling the water to enter from the lower part of the sieve plate, and starting the water treatment equipment to circulate the water when the height of the water is greater than that of the baffle I;
step (2), starting the second motor, and cleaning the floating objects floating on the water surface through the scraper so that the floating objects fall into the floating object bin and are discharged in time;
step (3), when the conical sieve barrel does not discharge or discharges a small amount of material, the first motor is turned off, the material pump is started to inject primary ore of the material bin and water in the baffle into the barrel body at the same time, and the third motor is started to inject air and medicine at the same time to stir the primary ore;
after the water in the baffle is drained, the screw is rotated, the sealing plate moves outwards, the two fan-shaped through holes are opened, and the residual materials of the conical screen barrel flow to the residual material bin under the action of gravity and are directly discharged;
step (4), the rotation direction of the stirrer is to ensure that the concave surface of the outer end arc-shaped plate is close to the circular stirrer first, part of the primarily selected ore directly falls to the next layer through the second partition plate, the other part of the primarily selected ore flows to the outer side along the convex surface of the inner end arc-shaped plate, and then the primarily selected ore is brought into the circular groove through the concave surface of the outer end arc-shaped plate and flows out after being extruded by the circular stirrer;
and (5) primarily selecting ores, passing through the three layers of the second partition plate, entering the bottom of the barrel body, mixing the primarily selected ores with water, treating the primarily selected ores with a medicament to obtain ore pulp, and directly introducing the ore pulp into flotation equipment.
Compared with the prior art, the invention has the beneficial effects that: the ore raw material is pretreated before the ore pulp enters the flotation equipment so as to screen out large-particle impurities in the ore, and soil and other floaters attached to the ore;
the raw materials are primarily selected through the conical sieve barrel, primarily selected materials are cleaned through water introduced below the sieve plate, floating objects flow is accelerated and then are discharged through the scraper plate, and water in the box body is provided with the filter plate and the water treatment equipment so that water circulation can be realized; the agitator and the circular agitator are used for scrubbing the surface of the ore pulp to further remove an oxide layer and fine mud on the surface of ore pulp particles, so that fresh surfaces are formed on the surfaces of the ore pulp particles, and the ore pulp flows under an irregular track through double agitation of the agitator and the circular agitator, so that the contact area of a flotation reagent and ore particles is increased, and the adsorption of the reagent is improved; any side of the fan-shaped hole is provided with an extrusion groove communicated with the fan-shaped hole, so that on one hand, large particles can be extruded and crushed, and on the other hand, the adhesion effect of flotation reagents and mineral particles can be increased through extrusion.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the screen washer.
Fig. 3 is a schematic structural diagram of the sieve washer for removing the conical sieve barrel.
Figure 4 is a schematic structural diagram of the upper part of the pulp upgrading machine.
Fig. 5 is a schematic internal structure diagram of the pulp upgrading machine.
Fig. 6 is a schematic structural view of the case.
Fig. 7 is a schematic structural view of a conical screen bucket.
Fig. 8 is a schematic view of the structure of the stirrer.
FIG. 9 is a schematic view of the structure of a circular agitator.
FIG. 10 is a schematic structural diagram of a second separator.
Fig. 11 is a schematic view of the internal structure of the tub.
Fig. 12 is a schematic view of the structure of the screen plate.
Wherein the reference numerals are: 1. a barrel body; 2. a box body; 3. a conical screen barrel; 4. a scraping plate mechanism; 5. a connecting pipe; 6. a material pump; 7. a sieve plate; 101. a discharge outlet; 103. a second clapboard; 104. a stirring shaft; 105. a stirrer; 106. a driven stirring shaft; 107. a circular stirrer; 108. a transmission belt; 109. a third motor; 110. a feed pipe; 111. an annular bin; 112. an atomizing nozzle; 113. a straight slot hole; 114. a circular groove; 115. a sector hole; 116. extruding a groove; 118. a sector-shaped notch; 201. screening the bin; 202. a material bin; 203. a baffle plate; 204. a settling bin; 206. a floating material bin; 207. a first clapboard; 208. a water treatment device; 210. a residue bin; 211. a counter bore; 212. a float outlet; 214. a sealing plate; 215. a hand wheel; 216. a residue port; 217. a screw; 301. a large circular plate; 302. a round bar; 303. a fan-shaped through hole; 304. an annular boss; 305. a rectangular frame; 306. a rotating shaft; 307. a first motor; 401. a conveyor belt; 402. hanging the plate; 403. and a second motor.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Referring to fig. 1-12, a flotation pretreatment device comprises an ore pulp modifying machine and a screening washer connected with a feed inlet of the ore pulp modifying machine, wherein the screening washer comprises a box body 2 with an open upper end and a sealed lower end, the interior of the box body 2 is divided into a screening bin 201 and a settling bin 204 by a baffle plate 203, a material bin 202 is arranged below the screening bin 201, the material bin 202 is connected with the screening bin 201 through a sieve plate 7, a screening mechanism is arranged in the screening bin 201, a water treatment device 208 is arranged on the upper part of the settling tank 204, a water inlet of the water treatment device 208 is connected with the box body 1, a water outlet of the water treatment device 208 is communicated with the material bin 202 through a connecting pipe 5 and is positioned on the upper part of the material bin 202, a discharge outlet is arranged at the bottom of the material bin 202 and is communicated with the feed inlet of the ore pulp modifying machine through a discharge pipe, and a feed pump 6 is arranged on the discharge pipe; the lower part of the pulp upgrading machine is provided with a discharge opening 101.
The connecting pipe 5 is connected with a water source and is provided with a valve. The junction of connecting pipe 5 and water treatment facilities 208 is provided with water pump one, the junction at connecting pipe 5 and water source is provided with water pump two, and the junction all is provided with the valve, water in the box 1 fills the back through connecting pipe 5, can temporarily close the valve of the junction at connecting pipe 5 and water source, water self-loopa through box 1 uses, be provided with the fluviograph in the water tank 1, control opening and closing of junction valve at connecting pipe 5 and water source through the fluviograph, guarantee that the water in the box 1 is in suitable height all the time, the control of fluviograph and valve all adopts prior art, the valve of control flow can be adopted to the valve, the water pump can adopt the booster pump.
Screening mechanism includes conical screen bucket 3, conical screen bucket 3 includes big plectane 301 and small circular plate, round bar 302 that a plurality of slope through the circumference equipartition set up between the edge of big plectane 301 and small circular plate is connected, be provided with pivot 306 between big plectane 301 and the small circular plate, the pivot 306 that is located big plectane 301 one end stretches out box 2 and is connected with motor 307 that has the reduction gear, the one end of a plurality of round bar 302 is provided with rectangle frame 305, be provided with the door on the rectangle frame 305, the first portion of conical screen bucket 3 is higher than baffle 203, the sieve mesh internal diameter of sieve 7 is the same with two adjacent round bar 302's interval.
The outside of little plectane is provided with annular boss 304, can integrative setting, it has two fan-shaped through-holes 303 to open with one heart on the little plectane, box 2 is provided with counter bore 211 with annular boss 304 complex, annular boss 304 rotates the main aspects that sets up at counter bore 211, the outside of box 2 is provided with incomplete feed bin 210, incomplete feed bin 210 passes through counter bore 211 and two fan-shaped through- holes 303 and 3 intercommunications of conical screen bucket, the bottom of incomplete feed bin 210 is provided with incomplete material mouth 216, last being provided with screw rod 217 through threaded connection of incomplete feed bin 210, the one end that screw rod 217 is located incomplete feed bin 210 inside is provided with closing plate 214, closing plate 214's external diameter is greater than the internal diameter of fan-shaped through-hole 303, the other end of screw rod 217 is provided with drive arrangement. The driving device can be a handwheel 215 or a motor, the sealing plate 214 is used for sealing the two fan-shaped through holes 303, and when the sealing plate 214 is opened, the two fan-shaped through holes 303 can be used for discharging residual materials in the conical screen bucket 3.
One end of the settling bin 204, which is far away from the baffle 203, is provided with a first partition plate 207, the first partition plate 207 and the inner wall of the box body 1 form a floating bin 206, the lower part of the floating bin 206 is provided with a floating outlet 212, and the upper end face of the first partition plate 207 is lower than the box body 1. This facilitates the discharge of the floating objects.
The scraper mechanism 4 is arranged above the settling bin 204 on the box body 1, the scraper mechanism 4 comprises a conveying belt 401 which is rotatably arranged on the box body 1, a plurality of scrapers 402 are arranged on the conveying belt 401, the scrapers 402 below the conveying belt 401 extend into the box body 1, and the conveying belt 401 is driven by a second motor 403.
The middle of the sieve plate 7 is high and the two ends are low. Make things convenient for the through sieve 7 of material to discharge like this to because rivers get into from the below of sieve 7, rivers have certain velocity of flow, when on sieve 7, can dash the material on the sieve 7, can wash the mud on the material on the one hand, on the other hand can also prevent that sieve 7 from blockking up, and the material discharge after the slope of sieve 7 is convenient for dash and rises.
The ore pulp modifying machine comprises a barrel body 1, wherein three layers of second partition plates 103 with straight slotted holes 113 are arranged in the barrel body 1, a stirring shaft 104 is concentrically and rotatably arranged in the barrel body 1, and a stirrer 105 is arranged on the stirring shaft 104 and on the second partition plate 103 at each layer;
The surface of the ore pulp is scrubbed by the stirrer 105 and the circular stirrer 107, an oxide layer and fine mud on the surface of ore pulp particles are further removed, so that the surface of the ore pulp particles forms a fresh surface, and the ore pulp flows under an irregular track through double stirring of the stirrer 105 and the circular stirrer 107, so that the contact area of a flotation reagent and ore particles is increased, and the adsorption to the reagent is improved.
The agitator 105 is wavy and is formed of two segments of arc-shaped plates, the rotation direction of the agitator 105 being such that the concave surface of the outer end arc-shaped plate is first adjacent to the circular agitator 107.
The top of staving 1 is provided with sealed annular storehouse 111, and the below of annular storehouse 111 is provided with a plurality of atomizing nozzle 112, and the top of annular storehouse 111 sets up inlet pipe 110, and inlet pipe 110 is connected with atomizing device, and annular storehouse 111 passes through the bracing piece to be fixed on staving 1, and atomizing nozzle 112 is located circular agitator 107 directly over. Feed line 110 is used to feed gas or flotation reagents.
The lower part of the settling bin 204 is low in the middle and high at two ends, and a sewage outlet 213 is arranged at the low position. A filter plate 205 for water purification is arranged in the settling tank 204 between the water treatment device 208 and the baffle plate 203. The filter plate 205 is below the first baffle plate 207.
A pulp pretreatment method using a flotation pretreatment device comprises the following steps:
step (1), water is introduced into the box body 1 through a connecting pipe 5, when the water passes through a baffle plate 203, ore raw materials are inverted into a conical sieve barrel 3, a motor I307 is started, small-particle ores fall onto a sieve plate 7 and fall into a material bin 202 through sieve holes, meanwhile, water is continuously injected into the box body 2, the water enters from the lower part of the sieve plate 7, and when the height of the water is larger than that of the baffle plate I207, water treatment equipment 208 is started to circulate the water;
step (2), starting a second motor 403, cleaning the floating objects floating on the water surface through the scraper 402, and enabling the floating objects to fall into the floating object bin 206 and be discharged in time;
step (3), when the conical sieve barrel 3 does not discharge or discharges a little, the first motor 307 is closed, the material pump 6 is started to inject the primary ore of the material bin 202 and the water in the baffle plate 203 into the barrel body 1 at the same time, and the third motor 109 is started to inject air and medicine at the same time to stir the primary ore;
after the water in the baffle plate 203 is drained, the screw 217 is rotated, the sealing plate 214 moves outwards, the two fan-shaped through holes 303 are opened, and the residual materials of the conical screen barrel 3 flow to the residual material bin 210 under the action of gravity and are directly drained;
step (4), the rotation direction of the stirrer 105 is to ensure that the concave surface of the outer end arc-shaped plate is close to the circular stirrer 107, part of the primarily selected ore directly falls to the next layer through the second partition plate 103, the other part of the primarily selected ore flows to the outer side along the convex surface of the inner end arc-shaped plate, and then the primarily selected ore is brought into the circular groove 114 through the concave surface of the outer end arc-shaped plate and flows out after being extruded by the circular stirrer 107;
and (5) after passing through the second three-layer partition plate 103, the primary ore enters the bottom of the barrel body 1, is mixed with water and is treated by a medicament to obtain ore pulp, and the ore pulp can be directly introduced into flotation equipment.
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, e.g. as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (6)
1. A flotation pretreatment device comprises a pulp modifying machine and is characterized by also comprising a screening washer connected with a feed inlet of the pulp modifying machine, the screening and washing machine comprises a box body with an open upper end and a sealed lower end, the interior of the box body is divided into a screening bin and a settling bin by a baffle plate, a material bin is arranged below the screening bin, the material bin is connected with the screening bin through a screen plate, a screening mechanism is arranged in the screening bin, a water treatment device is arranged at the upper part of the settling bin, a water inlet of the water treatment equipment is connected with the box body, a water outlet of the water treatment equipment is communicated with the material bin through a connecting pipe and is positioned at the upper part of the material bin, the bottom of the material bin is provided with a discharge hole, the discharge hole is communicated with a feed inlet of the ore pulp upgrading machine through a discharge pipe, and a material pump is arranged on the discharge pipe; the connecting pipe is connected with a water source and is provided with a valve;
the screening mechanism comprises a conical screen barrel, the conical screen barrel comprises a large circular plate and a small circular plate, the edges of the large circular plate and the small circular plate are connected through a plurality of obliquely arranged circular rods which are uniformly distributed in the circumferential direction, a rotating shaft is arranged between the large circular plate and the small circular plate, the rotating shaft positioned at one end of the large circular plate extends out of the box body and is connected with a motor I with a speed reducer, one end of each circular rod is provided with a rectangular frame, a door is arranged on the rectangular frame, the upper half part of the conical screen barrel is higher than the baffle, and the inner diameter of a screen hole of the screen plate is the same as the distance between two adjacent circular rods;
a first partition plate is arranged at one end, away from the baffle, of the settling bin, a floating bin is formed by the first partition plate and the inner wall of the box body, a floating outlet is formed in the lower portion of the floating bin, and the upper end face of the first partition plate is lower than the box body;
a scraper mechanism is arranged on the box body and above the settling bin, the scraper mechanism comprises a conveying belt which is rotatably arranged on the box body, a plurality of scrapers are arranged on the conveying belt, the scrapers below the conveying belt extend into the box body, and the conveying belt is driven by a motor II;
the ore pulp modifying machine comprises a barrel body, wherein three layers of second partition plates with straight slotted holes are arranged in the barrel body, a stirring shaft is concentrically and rotatably arranged in the barrel body, and a stirrer is arranged on the stirring shaft and on the second partition plate on each layer;
the baffle is two go up and be located the inner wall of staving with all be provided with circular recess between the agitator, circular recess circumference equipartition has four, circumference equipartition has 4 fan-shaped holes on the circular recess, it is provided with driven (mixing) shaft to rotate on the circular recess, be provided with circular agitator on the driven (mixing) shaft, circumference equipartition has four fan-shaped breachs on the circular agitator, the size area of fan-shaped breach with the size of fan-shaped hole, circular agitator sets up in the circular recess, the upper end of (mixing) shaft stretches out the staving is connected with motor three that has the reduction gear, the (mixing) shaft with be connected through the drive belt respectively between the driven (mixing) shaft.
2. The flotation pretreatment equipment according to claim 1, wherein an annular boss is arranged on the outer side of the small circular plate, two fan-shaped through holes are concentrically formed in the small circular plate, the box body is provided with a counter bore matched with the annular boss, the annular boss is rotatably arranged at the large end of the counter bore, a residue bin is arranged on the outer side of the box body, the residue bin is communicated with the conical sieve barrel through the counter bore and the two fan-shaped through holes, a residue port is arranged at the bottom of the residue bin, a screw rod is arranged on the residue bin through threaded connection, a sealing plate is arranged at one end of the screw rod located inside the residue bin, the outer diameter of the sealing plate is larger than the inner diameter of the fan-shaped through hole, and a driving device is arranged at the other end of the screw rod.
3. The flotation pretreatment apparatus of claim 2, wherein the screen deck is high in the middle and low at both ends.
4. The flotation pretreatment apparatus of claim 3, wherein the agitator is corrugated and comprises two arcuate plates, the agitator being rotated in a direction such that the concave surface of the outer arcuate plate first approaches the circular agitator.
5. The flotation pretreatment equipment according to claim 4, wherein a sealed annular bin is arranged above the barrel body, a plurality of atomizing nozzles are arranged below the annular bin, a feeding pipe is arranged above the annular bin and connected with an atomizing device, the annular bin is fixed on the barrel body through a supporting rod, and the atomizing nozzles are located right above the circular stirrer.
6. A pulp pretreatment method using the flotation pretreatment apparatus of claim 5, comprising:
step (1), introducing water into the box body through the connecting pipe, inverting the ore raw material into the conical sieve barrel when water passes through the baffle, starting the motor I, enabling small-particle ores to fall onto the sieve plate and fall into the material bin through sieve holes, continuously injecting water into the box body, enabling the water to enter from the lower part of the sieve plate, and starting the water treatment equipment to circulate the water when the height of the water is greater than that of the baffle I;
step (2), starting the second motor, and cleaning the floating objects floating on the water surface through the scraper so that the floating objects fall into the floating object bin and are discharged in time;
step (3), when the conical sieve barrel does not discharge or discharges a small amount of material, the first motor is turned off, the material pump is started to inject primary ore of the material bin and water in the baffle into the barrel body at the same time, and the third motor is started to inject air and medicine at the same time to stir the primary ore;
after the water in the baffle is drained, the screw is rotated, the sealing plate moves outwards, the two fan-shaped through holes are opened, and the residual materials of the conical screen barrel flow to the residual material bin under the action of gravity and are directly discharged;
step (4), the rotation direction of the stirrer is to ensure that the concave surface of the outer end arc-shaped plate is close to the circular stirrer first, part of the primarily selected ore directly falls to the next layer through the second partition plate, the other part of the primarily selected ore flows to the outer side along the convex surface of the inner end arc-shaped plate, and then the primarily selected ore is brought into the circular groove through the concave surface of the outer end arc-shaped plate and flows out after being extruded by the circular stirrer;
and (5) primarily selecting ores, passing through the three layers of the second partition plate, entering the bottom of the barrel body, mixing the primarily selected ores with water, treating the primarily selected ores with a medicament to obtain ore pulp, and directly introducing the ore pulp into flotation equipment.
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| CN201189486Y (en) * | 2008-04-30 | 2009-02-04 | 李斌 | No-vibration underwater drum screen |
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| CN104525359B (en) * | 2014-12-30 | 2017-05-17 | 唐山市神州机械有限公司 | Dry method heavy media separator adopting dry method heavy media separation bed and separation device |
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| CN201189486Y (en) * | 2008-04-30 | 2009-02-04 | 李斌 | No-vibration underwater drum screen |
| CN201603607U (en) * | 2009-12-22 | 2010-10-13 | 潍坊金丝达印染有限公司 | Submersible drum screening wash mill |
| CN207309554U (en) * | 2017-10-25 | 2018-05-04 | 李秀英 | A kind of cutting fluid recycling device |
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