CN102049351B - Method for crushing solid mixture - Google Patents
Method for crushing solid mixture Download PDFInfo
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- CN102049351B CN102049351B CN 200910236928 CN200910236928A CN102049351B CN 102049351 B CN102049351 B CN 102049351B CN 200910236928 CN200910236928 CN 200910236928 CN 200910236928 A CN200910236928 A CN 200910236928A CN 102049351 B CN102049351 B CN 102049351B
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Abstract
The invention discloses a method for crushing a solid mixture. The solid mixture comprises first solid granules and second solid granules; the first solid granules comprises first solid big granules and first solid small granules, wherein the granularity of the first solid big granules is greater than that of the second solid granules, the granularity of the first solid small granules is smaller than or equal to that of the second solid granules, and the density of the first solid granules is smaller than that of the second solid granules. The method comprises the following steps of: separating the solid mixture into the first solid big granules and a small granule mixture comprising the first solid small granules and the second solid granules; crushing the first solid big granules; and making the small granule mixture flow together with a solvent, depositing the second solid granules to form a second solid granule layer in the flowing process, and collecting the crushed first solid big granules and the first solid small granules in the solvent, wherein the density of the second solid granules is greater than that of the solvent. The method for crushing the solid mixture improves the utilization rate of the first solid.
Description
Technical field
The present invention relates to a kind of method of crushing solid mixture, more specifically, relate to the first solid and the second solid particle in a kind of separating solid mixture and pulverize the method for the first solid.
Background technology
When solid material used, especially the wholefood solid material of food service industry need to be ground into the solid of bulk required granular size usually, then enters follow-up production process.But these block solids for example are doped with other solid particle in the cassava usually, for example the grains of sand.If pulverize together with other grains of sand, can pollute and affect follow-up production.Therefore, from cassava, remove the grains of sand, thereby guarantee that the pure of cassava is very important.
In the prior art, usually use classifying equipoment that the mixture of cassava piece and the grains of sand is sieved, obtain oarse-grained block cassava and short grained mixture and pulverize oarse-grained block cassava.Obviously, may contain short grained tapioca starch in the granule mixture, thereby cause waste.For realizing removing sand purpose; mostly use the eddy flow litter cleaning machine to remove sand; particularly; the slurries that tapioca starch is mixed with the grains of sand are by the effect of centrifugal sedimentation; make that the grains of sand of greater density are thrown toward pool wall in the slurries, and get rid of from the bottom flushing of sediment mouth, the tapioca starch that density is lighter is then stayed in the water; thereby the realization tapioca starch separates with the grains of sand, is collected the cassava in the granule part.
In eddy flow removes sand, although can remove most of grains of sand, need to use a plurality of complex component such as eddy current type settling pit, the motor that produces centrifugal force and gearbox, slurries are separated, so that the complex structure of eddy flow litter cleaning machine under the effect of centrifugal force.In addition, for the effect of being removed sand preferably, also to provide larger slurries pressure and centrifugal force.In order to keep certain centrifugal force, the eddy flow litter cleaning machine must be worked under enclosed environment, therefore can not continued operation, and each slurries amount of processing is restricted.
Summary of the invention
Therefore, be the eddy flow that solves prior art complicated, the problem such as can not remove sand continuously of the operating environment that exists of removing sand, the invention provides a kind of method of crushing solid mixture.
In the method for crushing solid mixture of the present invention, described solid mixture comprises the first solid and the second solid particle, the density of described the first solid is less than the density of described the second solid particle, the method comprises: make described solid mixture be divided into bulky grain part and granule part according to the size of particle, and making described bulky grain partly include only described the first solid, described granule partly comprises described the first solid granule and described the second solid particle; Pulverize described bulky grain part; Make described granule mixture with flow of solvent, and make described the second solid particle in flow process, deposit formation the second solid particle layer, described the first solid bulky grain after collection is pulverized and the first solid granule in the solvent; The density of described the second solid particle is greater than the density of described solvent.
Use the method for crushing solid mixture of the present invention, can be when effectively separating described the first solid and described the second solid particle and pulverizing described the first solid, separate continuously, simply, quickly described the first solid granule and described the second solid particle, improved the utilization rate of described the first solid.
Description of drawings
Fig. 1 is the structural representation of crushing system that is suitable for the method for crushing solid mixture of the present invention;
Fig. 2 is the cross sectional view that shows riffler;
Fig. 3 is the view that shows playpipe.
The specific embodiment
According to the method for crushing solid mixture of the present invention, go for the various mixtures that comprise the first solid and the second solid particle, as long as satisfy following three conditions: the density of (1) first solid is less than the density of the second solid particle; The density of (2) second solid particles is greater than the density of solvent; (3) first solids and the second solid particle all are insoluble to solvent.For convenience of description, the below is take the first solid as cassava, and the second solid particle is the grains of sand, and solvent is that water illustrates method of the present invention.
Use crushing system shown in Figure 1 to implement method of the present invention, this crushing system comprises the first conveying device 10, particle grading device 20, the second conveying device 30, reducing mechanism 40, the 3rd conveying device 50 and material- gathering device 60,10 pairs of particle grading device 20 feed of described the first conveying device, particle grading device 20 can be simultaneously to the second conveying device 30 and the 3rd conveying device 50 feed, 30 pairs of reducing mechanism 40 feed of the second conveying device, 50 pairs of material-gathering device 60 feed of the 3rd conveying device, wherein, described crushing system also comprises riffler 70, riffler 70 comprises cell body 71, entrance 72 and outlet 73, material-gathering device 60 connects entrance 72, cell body 71 comprises sidewall 74 and bottom 75, outlet 73 is arranged on the sidewall 74, and bottom 75 has at least one bossing 76 and/or at least one sunk part 77.
The first conveying device 10 is provided to particle grading device 20 with the cassava particle of various particle diameters and the mixture conveying of the grains of sand.The first conveying device 10 can be drag conveyor, described drag conveyor comprises transmission device, chute and sealing scraper chain, the mixture of cassava particle and the grains of sand is placed in the chute, under the drive of transmission device, the sealing scraper chain is around transmission device operation, thereby the mixture that will be placed on cassava particle in the chute and the grains of sand is transported in the following process equipment along the traffic direction of scraper chain.
Be transported to the cassava granule that cassava particles in the particle grading device 20 comprise the granularity that granularity is less than or equal to the grains of sand greater than cassava bulky grain and the granularity of the granularity of the grains of sand.Particle grading device 20 can make according to the size of particle cassava bulky grain and the cassava separate small that is transported to wherein; thereby will be transported to cassava particle in the particle grading device 20 and the mixture of the grains of sand and be divided into two parts; a part is the cassava bulky grain, and another part is the granule mixture that comprises cassava granule and the grains of sand.Particle grading device 20 can be various types of grading plants, is preferably vibration separation screen, thereby selects the different screen cloth in mesh aperture to obtain the different two parts cassava particle of particle diameter.Because the particle diameter of cassava piece is larger, the particle diameter of the grains of sand is less, can select the screen cloth of the mesh of diameter below 2mm, thereby so that the oarse-grained particle diameter of cassava greater than 2mm, the particle diameter of granule mixture is less than 2mm.Wherein, the cassava bulky grain is to be substantially free of the cassava piece of the grains of sand and to be provided to reducing mechanism 40 (shown in single arrow among Fig. 1) by the second conveying device 30; The granule mixture is the mixture of the less tapioca starch of the grains of sand and particle diameter and is provided to material-gathering device 60 and riffler 70 with the operation (shown in double-head arrow among Fig. 1) of removing sand by the 3rd conveying device 50.
The second conveying device 30 and the 3rd conveying device 50 can be can the conveying solid substance particle various devices.Preferably, the second conveying device 30 is conveyer belt conveying devices, and the larger cassava particle transport of particle diameter that is used for particle grading device 20 is obtained is pulverized in reducing mechanism 40.
Reducing mechanism 40 can be for having the various reducing mechanisms of pulverizing the cassava function, and for example, reducing mechanism 40 can be to comprise that two opposed rollers are with by making roller rotate the broken kibbler roll that passes through the raw material between this in pressurization between the roller on one side on one side; Or comprise toe and screen cloth and by making described toe High Rotation Speed repeatedly hammer into shape broken until the mesh hammer mill of the screen cloth by the toe periphery to raw material; Or comprise V-shaped opening jaw and the vibration jaw jaw crusher; Or pin formula disintegrating machine and ball formula disintegrating machine.In one embodiment, reducing mechanism 40 is beater disintegrating machine, preferred model is the beater disintegrating machine of JFS-2000-72, this beater disintegrating machine comprises rotor, hammer leaf, sieve plate, drive system and control system, in running, by control system control hammer leaf High Rotation Speed, hammer leaf and material are rubbed, thereby with crushing material to the particle size range that requires.It is the tapioca starch of 1.8-2.5 millimeter that the reducing mechanism 40 of Cassava crushing system of the present invention preferably can provide particle diameter.
The 3rd conveying device 50 is preferably bucket elevator, and this bucket elevator can be for can be with material from the straight bucket elevator that is promoted to the various routines of higher position of lower position.For example described bucket elevator comprises drive sprocket, hopper and driven roller, hopper be installed on the drive sprocket and the linear direction of the material containing face of described hopper and drive sprocket motion vertical, drive sprocket is walked around driven roller and is joined end to end, and forms the closed circuit that transports material.The granule part (mixture that comprises cassava granule and the grains of sand) that is obtained by particle grading device 20 supplies on the described hopper, and utilizes the continuous motion of drive sprocket to be transported in the material-gathering device 60.
Described material-gathering device 60 can be the various hoppers that hold material, also can be the conveying worm with agitating function.Material-gathering device 60 can directly provide the granule mixture to riffler 70, and make this granule mixture in riffler 70 with the stirring water flow that is provided by other device, remove sand realizing.But this mode is unfavorable for controlling granule mixture and the ratio that stirs water, makes the fluid mobility of formation inconsistent.Therefore, under the preferable case, material-gathering device 60 is the conveying worms with agitating function, thereby the slurries 80 of being convenient to the granule mixture is mixed with water are transported to riffler 70.Particularly, in material-gathering device 60, add entry with the described granule mixture of abundant stirring and make it form slurries 80, these slurries 80 can then flow in the riffler 70 and remove sand.Wherein, consumption and the mixing time of water is not particularly limited, if can obtain mobile better, slurries 80 that viscosity is moderate.The present inventor finds, be about when the quality of water cassava granule and the grains of sand material of the 3rd conveying device 50 (namely from) gross mass 20-100 doubly, when mixing time is 0.5-2h, can obtain the slurries 80 that flowability is better, viscosity is moderate, therefore, the preferred above-mentioned condition of the present invention.
As shown in Figure 2, riffler 70 comprises cell body 71, entrance 72 and exports 73, material-gathering device 60 connects entrance 72 to provide slurries 80 to riffler 70, cell body 71 comprises sidewall 74 and bottom 75, described outlet 73 is arranged on the sidewall, slurries 80 flow in the riffler 70 from entrance 72, and cassava granule (hereafter is the cassava particle) shows different in cell body 71 interior mobile processes with the grains of sand because density is different.The density of the grains of sand is larger, settling velocity is fast and at first form grains of sand layer 82 in the bottom of cell body 71 deposition, the cassava Particles Suspension arrives outlet 73 in water and with water flow, the cassava particle that the water above water that exports 73 places carries wherein flows out from exporting 73, thereby realizes separating of cassava particle and the grains of sand.
Give birth to the movement that is parallel to flow direction because the impact of the water that the grains of sand layer 82 that grains of sand deposition forms flows easily above it issues, thereby accumulate on the sidewall at outlet 73 places, if overheap can overflow from exporting 73.Therefore, the method for crushing solid mixture of the present invention can also comprise and prevents that the flow direction that grains of sand layer 82 is parallel to slurries 80 from moving freely.
Preferably, move freely for preventing the flow direction that grains of sand layer 82 is parallel to slurries 80, the method for crushing solid mixture of the present invention can by make slurries 80 in flow process by the barrier perpendicular to its flow direction.Preferably, the height of this barrier is higher than the height of grains of sand layer 82, is lower than the liquid level of slurries 80.Particularly, the bottom 75 of cell body 71 can have bossing 76 and/or sunk part 77.Because the grains of sand deposit in the flow process of slurries 80, preferably, as shown in Figure 2, bottom 75 has a plurality of bossings 76 and/or a plurality of sunk part 77, and is set on the bottom 75 of cell body 71 along 73 arrangements from entrance 72 to outlet.
Grains of sand layer 82 is deposited on the bottom 75 of cell body 71, and when grains of sand layer 82 is subject to the impact of water flow of its top and streamwise when moving, the grains of sand can move in the sunk part 77 or be stopped by bossing 76 and can not continue streamwise and move.Even the grains of sand are deposited on the top of bossing 76 at the beginning, this part grains of sand also can move with the current of its top, then is deposited on sunk part 77 bottom.Therefore, grains of sand layer 82 can not move to the sidewall at outlet 73 places basically, thereby prevents that the grains of sand are stacked into outlet 73 and overflow from exporting 73.Wherein, greater than the height of grains of sand layer 82, the liquid level of slurries 80 is higher than the height of bossing 76 to the degree of depth of the height of bossing 76 or sunk part 77 (i.e. the fluctuating of the vertical height of bottom 75).Preferably, slurries 80 are interior when mobile at riffler 70, make the top and the poor 0.1-0.5m of remaining of the liquid level of slurries 80 of bossing 76 or sunk part 77, thus effectively prevent grains of sand layer 82 move freely and do not hinder as far as possible flowing of slurries 80.
In said process; if the first solid granule is also with the speed precipitation slower with respect to the second solid particle; when the flow velocity of slurries 80 is slower; a certain amount of the first solid granule can be deposited to the second solid particle layer before flowing to outlet 73; thereby can't be trapped in the riffler 80 from exporting 73 outflows with water, cause a lot of wastes.Similarly, even the density of the first solid is enough to make it to swim in fully in the solvent can not sink, but when slurries 80 flow, the first solid granule may be subject to the impact of the second solid particle precipitation and deposit and be mixed in the second solid particle layer with the second solid particle, so also can cause a lot of wastes.
For addressing this problem; can be according to the first dissimilar solids; the flow velocity of control slurries 80; so that slurries 80 flow to outlet 73 o'clock from entrance 72; the second solid particle basically is deposited to and forms the second solid particle layer on the bottom 75; and guarantee that the first solid granule is deposited to the top of the horizontal plane at outlet 13 places, namely can flow out from exporting 13.
In addition, the method for crushing solid mixture of the present invention can also comprise: stir the second solid particle layer, make the first solid granule that is mixed in the second solid particle layer floating and with its top water flow.Preferably, can provide extra gas flow and/or liquid stream to the second solid particle layer.More preferably, can above the top layer of the second solid particle layer, provide down gas flow and/or liquid stream.Wherein, the gas that forms gas flow can be not with the gas of the first solid granule, the second solid particle and solvent reaction, the liquid of liquid stream is preferably solvent.Be the cassava particle at the first solid granule, the second solid particle is the grains of sand, when solvent is water, can use air stream and/or current.
In this process, can use gas flow and/or the liquid stream of suitable flow velocity and flow, so that the cassava particle in the top layer of grains of sand layer 82 floats to the position away from grains of sand layer 82, perhaps make at least the cassava particle that is mixed in the grains of sand layer 82 float to the surface of grains of sand layer 82, thereby taken away by the current of grains of sand layer 82 top.Although this may make some grains of sand in the grains of sand layer 82 also floating, the grains of sand can sink rapidly because density is large, therefore basically can not taken away by water.
For implementing the step of above-mentioned gas jet stream and/or liquid stream, can gas jet stream and/or the injection apparatus of liquid stream interior can the setting of riffler 70.Particularly, described injection apparatus comprises at least one playpipe 78, and each playpipe 78 comprises body and a plurality of hole P that are positioned on the body separately, and gas flow and/or liquid communication are crossed this hole P and sprayed.
Each playpipe 78 can be arranged in the top of grains of sand layer 82 in every way, and for example, playpipe 78 can be set to across two of riffler 70 relative sidewalls.As shown in Figure 2, playpipe 78 can be along the parallel longitudinal setting of riffler 70, perhaps along laterally the be arrangeding in parallel of riffler 70, and also can be along being predetermined angle and be arrangeding in parallel with horizontal and vertical.Certainly, playpipe 78 also can be arranged in a crossed manner.According to the layout of playpipe 78, preferably have 10 holes on every meter the body, the diameter in hole can be 3-6mm.Obviously, can use various pumps or aspirator to make hole P jet-stream wind and/or current.
Because the continuity of desanding operation, the thickness of the sand grains layer 82 of riffler 70 interior depositions may be different, are arranged on all the time the top of sand grains layer 82 for making playpipe 78, and preferably, the distance between the body of playpipe 78 and the bottom 75 can be regulated.For example, can playpipe 78 across two sidewalls at least one slideway is set, at least one end of playpipe 78 can be arranged in this slideway and along this slideway and slide, thereby can be along the vertical height direction adjusting playpipe 78 of described two sidewalls and the distance between the bottom 75.
Preferably, hole P is set to alignment recess part 77 and/or bossing 76 and entrance 72 and/or exports the groove that forms between the sidewall at 73 places.Namely, when bottom 75 has sunk part 77 (comprise and depression that bottom 75 is integrally formed and two bossings 76 between the groove that forms), hole P alignment recess part 77; When the bottom only has a bossing 76, hole P alignment bumps part 76 and entrance 72 and/or export groove between 73.
Preferably, as shown in Figure 3, playpipe 78 is arranged on the top of grains of sand layer 82 and hole P is set to towards oblique below grains of sand layer 82 gas jet stream and/or liquid stream, the flow direction (filled arrows direction among Fig. 3) or the horizontal plane that are injection direction (Fig. 3 hollow core direction of arrow) and slurries 80 are angle A, and this angle is preferably 30-60 °.As shown in Figures 2 and 3, playpipe 78 arranges along horizontal (filled arrows is depicted as flow direction among Fig. 3, and flow direction is vertical) of riffler 70, and hole P is set to favour downward 45 ° of horizontal direction (shown in Fig. 3 hollow core arrow) and sprays.Thereby grains of sand layer 82 in a big way in drive the cassava particle, avoid simultaneously making the grains of sand also floating.
Obviously, but can use various pumps or aspirator to make hole P spray gas flow and/or the liquid stream of adjusting strength.In the method for crushing solid mixture of the present invention, can regulate the flow velocity of slurries 80, and according to the injection intensity of the corresponding adjusting injection apparatus of this flow velocity, i.e. flow velocity and the flow of gas flow and/or liquid stream.When the flow velocity of slurries 80 is slower, can strengthen the gas flow of injection and/or flow velocity and the flow of liquid stream, can be suspended in top, the described top layer of distance at a distance so that be deposited in the cassava particle on the top layer of grains of sand layer 82, thereby avoid below again being deposited to outlet 73 with water flow at 73 o'clock to outlet.When the flow velocity of slurries 80 is very fast, the gas flow that injected device provides and/or liquid stream blow and the cassava particle that suspends can be with the water rapid flow to outlet 73, during this period of time again precipitation apart from less, therefore can use the less gas flow of flow velocity and flow and/or liquid stream to reach identical effect.
In addition, slurries 80 are during with the flow rate determined, flow velocity and the flow of the gas flow that can reduce to spray along the flow direction of slurries 80 and/or liquid stream.In the sidewall zone far away that is provided with outlet 73 along the flow direction distance of slurries 80, can use the larger gas flow of flow velocity and flow and/or liquid stream, can be suspended in top, the described top layer of distance at a distance so that be deposited in the cassava particle on the top layer of grains of sand layer 82, thereby avoid below again being deposited to outlet 73 with water flow at 73 o'clock to outlet; And in the nearer zone of sidewall that is provided with outlet 73 along the flow direction distance of slurries 80, can use the less gas flow of flow velocity and flow and/or liquid stream, thus make the cassava particle floating and flow out with water in avoid the grains of sand also floating and then flow out with water.
The method of crushing solid mixture of the present invention is particularly useful for density and differs two kinds of larger solid particles, and for example, the density of the first solid particle can be the 10%-50% of the second density of solid particles, preferably is no more than 60%.
In addition, when using the method for crushing solid mixture of the present invention, preferably the first solid particle, the second solid particle and solvent are fully mixed, more preferably, the weight of solvent be the first solid particle and the second solid particle gross weight 20-100 doubly.The first solid particle is the cassava particle, and when the second solid particle was the grains of sand, the weight of water was 25 times of gross weight of cassava particle and the grains of sand.
The hole P of playpipe 78 preferably is set to spray towards the top layer of grains of sand layer 82, and therefore, hole P preferably is set to 75 injections towards the bottom.More preferably, hole P is set to along being the angle A Jet with downward flow direction with horizontal direction, and angle A is preferably 30-60 °, thereby cassava is short grained to avoid making the grains of sand also floating simultaneously driving.As shown in Figure 3, playpipe 78 arranges along horizontal (filled arrows is depicted as flow direction among Fig. 3, and flow direction is vertical) of riffler 70, and hole P is set to favour downward 45 ° of horizontal direction (shown in Fig. 3 hollow core arrow) and sprays.
When the grains of sand are deposited on recess 17 when interior basically, playpipe 78 preferably is set to above recess 17 and Jet with downward flow direction air-flow and/or current.
The continuity of operation owing to remove sand, the thickness of the grains of sand layer 82 of riffler 70 interior depositions may be different, are arranged on the top of grains of sand layer 82 for making injection apparatus, and preferably, playpipe 78 is set to and can regulates along the vertical height direction of riffler 70.
Playpipe 78 is arranged on outlet is conducive to the injected air-flow of cassava granule near 73 and/or current blow and taken away by current rapidly, but be arranged near the air-flow of playpipe 78 injections the outlet 73 or the speed of current and will be controlled at proper range, avoid the grains of sand are also blown and take away, for example 1m/s.In addition, can also playpipe 78 be set in the position away from outlet 73, in this case, playpipe 78 can provide air-flow and/or the current of larger intensity, for example 3m/s.
In embodiments of the present invention, in order to realize the continuous operation of removing sand, can adopt the whole bag of tricks to make slurries 80 or water flow, for example can use pump or other aspirator or utilize the potential energy of slurries 80 that slurries 80 are flowed into from entrance 72, and then make water carry the cassava granule from exporting 73 outflows.Preferably, can control by pump the flowing velocity of slurries 80.Especially the first larger to density solid can prevent further that by accelerating flow velocity the first solid granule from precipitating.
Because therefore the relative open to the outside world in top of riffler 70 is convenient to monitoring, obtains the height of best flow velocity and outlet 73 with adjusting.
Obviously, described riffler also can be realized the enclosed operation of removing sand.But it is light and can swim in the first solid granule in the water fully that hands-off operation only limits to density.In closed when operation of removing sand, can make slurries 80 in riffler 70, leave standstill predetermined time so that the grains of sand are deposited to bottom 75 fully, then make the first solid granule that swims in the water derive riffler 70 with current, similarly, in closed when operation of removing sand, also can in riffler 70, injection apparatus be set, thereby avoid the first solid granule to be subject to the obstruction of the second solid particle and deposit to the second solid particle layer, cause waste.
When described riffler 70 during for separating of cassava and the grains of sand, in the described slurries, the weight of water be preferably cassava and the grains of sand gross weight 20-100 doubly.The vertical height of described riffler is preferably 0.5-0.9m, and the sunk part of described bottom and the height of bossing are 0.1-0.3m, and described bossing and sunk part account for the 40-60% of described bottom area.Described outlet bottom and the distance between the bottom be preferably 0.4-0.85m, so that the top of bossing or sunk part and the poor 0.1-0.5m that remains of the liquid level of slurries, distance between described entrance and the bottom is the top that 0.3-0.5m and described entrance penetrate into described entrance place sidewall, distance between the entrance of described riffler and the outlet place sidewall is preferably 5-7m, thereby makes described slurries by the flow velocity natural flow of the drop between described entrance and the described outlet with 3-10m/s.The air-flow that described injection apparatus sprays or the flow velocity of current are 2-4m/s.Use described riffler to carry out the repeated operation effect of can better being removed sand of removing sand, when using described riffler to separate cassava and the grains of sand, make slurries 20 riffler 10 interior repeat to flow can remove 95% the grains of sand 3-5 time.Use the method for crushing solid mixture of the present invention, can be when effectively separating described the first solid and described the second solid particle and pulverizing described the first solid, separate continuously, simply, quickly described the first solid granule and described the second solid particle, improved the utilization rate of described the first solid.
Claims (14)
1. the method for a crushing solid mixture, described solid mixture comprises the first solid particle and the second solid particle, described the first solid particle comprises the first solid granule of the granularity that granularity is less than or equal to described the second solid particle greater than the first solid bulky grain and the granularity of the granularity of described the second solid particle, the density of described the first solid particle is less than the density of described the second solid particle, and the method comprises:
Solid mixture is separated into the first solid bulky grain and the granule mixture that comprises the first solid granule and the second solid particle;
Pulverize described the first solid bulky grain;
Make described granule mixture with flow of solvent, and make described the second solid particle in flow process, deposit formation the second solid particle layer, described the first solid bulky grain after collection is pulverized and the first solid granule in the solvent; The density of described the second solid particle is greater than the density of described solvent,
Wherein, make described granule mixture and solvent formation slurries and described slurries flowed,
Described method also comprises stirs the second solid particle layer, so that described the first solid granule that is mixed in described the second solid particle layer is floating and mobile with described slurries, the method for described stirring is for providing gas flow and/or liquid stream to described the second solid particle layer.
2. method according to claim 1, wherein, the method also comprises and prevents that described the second solid particle layer streamwise from moving freely.
3. method according to claim 2, wherein, the described method that prevents that described the second solid particle layer streamwise from moving freely comprise make described slurries in flow process by perpendicular to the barrier of flow direction, the height of this barrier is higher than the height of described the second solid particle layer and is lower than the liquid level of described slurries.
4. method according to claim 3, wherein, described barrier is projection and/or depression.
5. method according to claim 3, wherein, the difference of the height of described barrier and the liquid level of described slurries is 0.1m-0.5m.
6. method according to claim 1, wherein, flow velocity and the flow of gas flow and/or liquid stream are enough to make described the first solid granule that is mixed in described the second solid particle layer to float to the surface of the second solid particle layer.
7. method according to claim 1, wherein, the method also comprises the flowing velocity according to described slurries, regulate flow velocity and the flow of described gas flow and/or liquid stream, the flowing velocity of described slurries increases or when reducing, reduces or increase flow velocity and the flow of described gas flow and/or liquid stream.
8. method according to claim 1, wherein, the direction of described gas flow and/or liquid stream and the flow direction of slurries are 30-60 degree angle down.
9. the described method of any one according to claim 1-8, wherein, the gas of described gas flow not with described slurry reaction, the liquid of liquid stream is the solvent in the slurries.
10. method according to claim 1, wherein, the density of described the first solid particle be at most described the second solid particle density 60%, the density of described solvent is greater than the density of the first solid particle and less than the density of described the second solid particle.
11. method according to claim 1, wherein, the consumption of described solvent be described the first solid granule and described the second solid particle gross weight 20-100 doubly.
12. according to claim 10 or 11 described methods, wherein, described the first solid particle is the cassava particle, and described the second solid particle is the grains of sand, and described solvent is water, and the liquid level of described slurries is 0.4-0.85m, and flow velocity is 3-10m/s.
13. method according to claim 1 wherein, uses classifying screen that described solid mixture is divided into described the first solid bulky grain and described granule mixture, uses the conveying worm with agitating function to mix described granule mixture and described solvent.
14. according to claim 1 or 13 described methods, wherein, use disintegrating machine to pulverize described the first solid bulky grain.
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| CN112246421A (en) * | 2020-10-15 | 2021-01-22 | 中国石油化工股份有限公司 | Device and method for rapidly screening low-density plugging adjusting balls |
Citations (5)
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| DE2133802A1 (en) * | 1971-07-07 | 1973-01-18 | Kloeckner Humboldt Deutz Ag | Separating granulates by density - using liquid flowing upward through perforated vibrating trough |
| EP0129235A2 (en) * | 1983-06-21 | 1984-12-27 | Bühler AG | Method of manufacturing a product from starting materials containing starch |
| CN2778389Y (en) * | 2005-03-02 | 2006-05-10 | 统一环保科技股份有限公司 | Machinery-free type separation device |
| CN2902461Y (en) * | 2006-05-17 | 2007-05-23 | 王旭光 | Particle size classification trough |
| CN201140100Y (en) * | 2007-12-24 | 2008-10-29 | 河南天冠企业集团有限公司 | Boosting type fresh manioc raw material floatation and foreign matter removal apparatus |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2133802A1 (en) * | 1971-07-07 | 1973-01-18 | Kloeckner Humboldt Deutz Ag | Separating granulates by density - using liquid flowing upward through perforated vibrating trough |
| EP0129235A2 (en) * | 1983-06-21 | 1984-12-27 | Bühler AG | Method of manufacturing a product from starting materials containing starch |
| CN2778389Y (en) * | 2005-03-02 | 2006-05-10 | 统一环保科技股份有限公司 | Machinery-free type separation device |
| CN2902461Y (en) * | 2006-05-17 | 2007-05-23 | 王旭光 | Particle size classification trough |
| CN201140100Y (en) * | 2007-12-24 | 2008-10-29 | 河南天冠企业集团有限公司 | Boosting type fresh manioc raw material floatation and foreign matter removal apparatus |
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