JPS61502383A - Clay filtration cake dewatering equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Clay p cake dehydration equipment Background of the invention FIELD OF THE INVENTION This invention relates generally to devices for removing water from clay, and more particularly to devices for removing water from clay. to electrokinetically remove water from the clay cake as it passes through the device along a fixed path of travel. related to the device.

More specifically, without being limited to the particular applications shown and described, the present invention The clay cake is exposed to a moving turtle while being guided to remove some of the water from the clay cake. The present invention relates to a dewatering device for increasing the solids content of clay cakes.

Clays such as kaolin are widely used as adsorbents, pigments, catalysts, paper fillers, etc. ing. Such clays are present as a mixture with inert foreign matter in the sediments above the ground. Get out.

In commercial applications involving clay, it is desirable to separate the clay material from foreign materials before using the clay. stomach. One method for separating inert foreign materials from clay is e.g. sodium silicate, hexyl Sodium sametaphosphate, sodium tripolyphosphate, and tetrasodium birophosphate This is done by dispersing natural clay and water using a dispersing chemical such as Then, such clay slurry is kneaded, sanded, classified and extracted to produce the desired Remove unwanted foreign objects. Following these steps, the clay is filtered, dispersed and extracted. Remove the chemicals and leave a somewhat solid filter cake containing 30% to θ% clay solids. make. This Sθ%~I, 0% clay solids cake was then redispersed and spray dried. otherwise it dries in agglomerated form.

For various economic reasons, the clay industry uses clay containing at least 70% solids. It is desirable to ship the clay slurry. Therefore, in clay technology, the amount is about 30% ~ Add 0% spray-dried clay to the solids redispersion clay filter cake at SO% to θ%. It is customary to prepare a slurry of 70% solids. 7θ% solids for shipping Add the spray-dried clay to the ladled clay paste cake to prepare the clay slurry. This is due to the relatively high cost of 4fw spray-dried clay, which reduces the cost of shipping slurry. make the strikes comparatively small.

Therefore, the clay technique requires at least a substantial Obtaining a clay filter cake containing θ% clay surface directly from a clay suspension. I've been looking for ways to do it.

Among the methods developed for preparing shrunken solid clay cakes, electric Electrokinetic phenomena such as electrophoresis and electroosmosis have been used. This method is an example of A and C, all of which are assigned to the assignee of this invention. Kunkle U.S. Patent No. 9003 g11 and U.S. Patent No. 1IO g03g, and A,C. Rice such as kunkuru It is disclosed in National Patent No. 11/10/g9. Using electrophoresis and electroosmosis Electrical processes for separating solid particles from aqueous suspensions are described in A and C, also assigned.

Kunkle's U.S. Patent No. 39g0g37 and U.S. Patent m'l/32 Otsukootsu and A. C. Kunkle et al., US Pat. Kamiki A general description of electrophoretic and electroosmotic phenomena can be found in K.^. C.

Kunkle et al. can be seen in the literature cited in U.S. Pat. Wear.

Up until now, rotating drum vacuum filters have been the most commonly used method for filtration of clay suspensions. there were. Such filters are known to those skilled in the art and are commonly used in encyclopedia optics. Process Equipment (Confucian, Morn, J, Mead, Leanhold Publications) Sing Co,, N, Y,, N, Y, l; / 9th year, ri / 7-3g page J), Chemical Engineer Handbook (Notes J, H, Perry: McGraw Hills) Co., N, Y, + N, Y, ;/963; Pages/9-73 to 79 -g; W, L.

Macape & Hi J, C, Smith), Unit Operation Op Chemical Ennonearing (Power 2nd Edition; McGraw-Hill Book Cob, N, Y, , N, Y ,; / 947 Hggθ-90 Gubage; A, S, Forast, etc.), and Princisol Op Unit Operations (Joan Willie & Sons I nc, , N, Y, , N, Y,; / 96θ year; Hard Jihiro 90-500) It can be found in any basic text such as

Such rotating drum vacuum filters generally have a filter media on the outer surface of the drum. Equipped with an attached filtration drum. The drum is rotatable in the casing or housing. A vacuum is maintained inside the drum. Drum suspends solids When the drum is rotated, the vacuum inside the drum causes this Liquid passes through the filtration media on the outer surface and into the interior of the drum. This allows the p-transistor to A solid filter cake forms on the surface and the P liquid is removed from inside the drum. this Such filtration separates the liquid and solid suspension into two parts: fl) a filter on the outer surface of the drum; Contains a low degree of solids, depending on the material that passes through and forms the filtration media. P solution that It is separated into a filter cake, which generally contains 0-30% fiber.

Summary of the invention According to the present invention, clay having a solids content of 70% or less is used. An apparatus for electrokinetically processing a food bowl is provided. clay! I/I quality is influenced by dynamic force. This I! monument is erected along the designated travel route. 1 m force removes water from clay k, while The clay material is carried through the electric field to a higher, preferably lower, content than the material entering the device. In theory, a clay cake with a solids content of 70% is discharged.

It is therefore an object of the invention to Clay making IF' - The purpose is to improve clay processing, such as over-cake making.

Another object of the present invention is to electroosmotically remove water from clay formations by: 14 clay material is treated 1-+'th.

Still another object of the present invention is that the resulting PJ cake is a filter cake that removes all water. removes water from cohesive clay materials without being subjected to pressures that would adversely affect physical form. 'iA There is electrical separation.

These and other objects are achieved in accordance with the present invention by providing a a pair of oppositely charged continuously moving tubes positioned in contact with a quantity of clay material; This is accomplished by providing a wJ dewatering device with webs or belts. 2 Two electrode belts or webs are in continuous tiF contact with the clay cake, and the clay cake is between these electrodes without being subjected to pressure qualitatively higher than the contact pressure, and this This caused 39J of water contained in the clay cake*Damage to the clay cake during separation and removal. to prevent

Drawing description The object of the invention together with further features of the invention and first points arising from the invention is set forth in the appendix. It is clear from the following description of the preferred embodiment of the invention shown in the drawings that Reference numbers refer to like parts.

First, the device electroosmotically separates and removes water from the clay cake. Mechanical schematic diagram of the apparatus which clearly shows the method of unib Nla, FIG. 2 is a front view of the present invention; FIG. 3 is an enlarged end side view of the device taken along line 3--3 of FIG. 2; Figure 7 is along the lines 1-q- of Figure 2, which better shows how to create an electric field in the W. The main part of the device is a cross-sectional view, the left figure shows the relationship between λ facing sea urchins 1. an enlarged view of a detail of the apparatus shown in Figure 1 to better illustrate the method; Figure 6 is an enlargement of a portion of the structure to better show how spacing and contact is maintained. Big picture, @Figure 7 and Figure g are enlarged views of the tension mechanism that maintains the bolts of the device in the specified orientation. be.

Description of the preferred embodiment Referring to IAI, a mechanical diagram of a clay dewatering device is shown, The wrinkles are shown in detail in Figures 2-g. The dewatering device is a φ conductive endless wafer. webs or belts 201, 301, these webs or belts have opposite electrical It is a matter of temperament. The upper belt (201), sometimes referred to as the anode belt, is preferably A substance that prevents corrosion such as that resulting from contact of the 1mTh belt with wet clay materials. covered with. Lower belt) 301 forms the cathode, and the lower belt has a hole. water that has been formed or formed and is driven out of the clay material by mobilization forces. It can be passed through the hole. Water removed from the clay material should be drained into a suitable drainage system (see Figure 1). (not shown) is drained and disposed of, or if desired, washed.

As best shown in Figure 2, a flocculated clay pellet containing 5, t, S-% solids. is supplied onto the lower belt, that is, the cathode belt 301, respectively @pole belt 201 and A shape is formed between the related ball rolling roller 202 and the upper running portion 303 of the lower shade belt 801. Pass through the completed entry f101.

After that, the clay yeast material is exposed to an electric field, and the electric cedar base, which is charged in two pairs, The clay-first material is passed between the belts in contact with the belts, and the clay-first material is When moving between pole webs or bells l-201,801 together with these belts. When preparing clay yeast, blow and remove materials from the clay yeast.

The position of the electrodeposited belt 201.301 is maintained in a manner described in detail below. , therefore, the upper belt 201 is in contact with the clay material as it follows the load. in substantially pressure-free continuous contact. This force maintains constant contact with the clay material. However, this also applies an external pressure that exceeds the contact force. The clay material J is extruded from the hole 806 formed in the lower web part and the cathode web 801. I will make sure not to. As the clay yeast progresses through the apparatus, a constant 1. Two pressure levels It is maintained between oppositely charged polar webs 201.301. However, the viscosity When the soil yeast passes through the electrode belt, liquid is expelled from the clay yeast. Therefore, the electrical resistance of the clay material increases as the material moves along Pak Hun Road. However, as the liquid is removed, the current across the cake so formed is It decreases over time.

Apparatus for removing liquid from clay materials is shown in detail in Figures 2-g. . The dewatering device has a frame structure 100, and upper and lower *i=mini belt bodies 20, respectively. 0 and 800 are supported by this structure. As best shown in Figure 2, Yeast, a clay material containing approximately 55% solids, is grown from a source (not shown). through the nozzle 10 onto the upper run or surface 303 of the electrode bell) 301; Then, the upper running portion, that is, the surface 303 of the upper electrode belt 301 and the upper electrode belt 302 It passes through the entrance hole 101 formed between the two electrode belts. upper electrode Since the linear speeds of belt 201 and lower electrode bell) 301 are equal, clay yeast Proceed along with these belts and proceed through the equipment, Shimoda Rorolla 3 Clay cake (not shown) from the dewatering process as a high clay solid cake passing through 07 Go inside the crusher.

Both electrode bells) 201, equal linear velocity of the FIOL will be explained by those skilled in conveyor technology. using either a common synchronous drive source or independent synchronous drive sources in a manner known to This can be achieved by: 1! There is a phase difference between two pairs of the same surfaces in the polar belt. Any electricity production is suitable as long as there is no exercise.

Referring to the gold electrode belt assembly, the lower electrode belt assembly 800 includes a horizontally extending The frame 805 is broken down and the frame 305 is replaced by the frame structure 100 of the machine. It is supported and has a Genin Roller 302 and a Shimoda Roller 307 at both ends thereof. , forming a horizontal running portion of the lower electrode belt +301. Running on the lower electrode belt 301 The lower surface of portion 803 is supported by a series of substantially identical support rollers 320, Each of the rollers is mounted on a horizontally extending frame member 3 by suitable bearing assemblies 325. 05, the bearing assembly 325 is connected to the frame member 305 and the roller 820 is rotatable relative to frame member 305. Support roller 320 functions to create a uniform support for the upper running portion 303 of the lower electrode belt 301. to maintain a substantially uniformly flat surface of the basin supporting the clay material carried by the belt. do.

Substantially one part for supporting the clay material carried on the upper run 303 of the lower electrode belt. To assist in maintaining a flat surface, the electrode bell (301) is provided with a A predetermined tension is maintained by a tension roller mechanism 350 shown in enlarged detail in FIG. be done. The tension roller assembly 850 is connected to each upper running portion 303 of the lower electrode belt 801. and the lower running portion 804, and is in contact with the inner surface of the lower running portion 304 of the belt. Touch it to float vertically. Each end of the tension roller 351 is fitted with a suitable bearing block 3. 52, and this block is rotatably supported by the support frame 35g. is held to allow vertical movement of the support roller. Each of the support frames 853 Horizontal movement is limited by a pair of vertical guide rods 354 at the ends of. Support flap The frame 858 is formed with a pair of openings 355 at each end, and the internal rod 854 is Mounted concentrically through opening 355 to allow only vertical movement of the tension roller. Ru. In this method, the tension roller 351 is free floating in the vertical direction and the lower electrode bell ) 301 by gravity, the support frame 358 Vertical movement is limited by rods 354.

When clay yeast is supplied onto the upper running part of the lower 11Li301, it becomes viscous. The soil material advances through the device and the movement established between the upper and lower electrode belts. The liquid is removed from the clay matrix by electrical power. Is this liquid removed from the clay material? When the mixture is mixed, it becomes a clay paste u clay cake that is fed into the device k, and the liquid part becomes viscous. After 4y from the earthen object, the clay cake comes out from the exit after being pneumatically removed. mentioned above As shown in FIG. Liquid driven from the clay material will thus pass through this hole.

For collecting liquids driven from clay materials for either processing or disposal. In order to A sloped trough 470 is supported from the lower electrode frame section 305. trough 4 70[, respectively, lower electrode bell) 301, between the upper running part 808 and the lower running part 304. located and sloping downward to the drainage outlet port 71 to remove the clay material. The evaporated liquid can be discharged through this outlet.

As mentioned above, the 17 loads of the upper electrode belt 201 and the lower electrode belt 801 are opposite to each other. It is of polarity. Although the magnitude of the charge can be changed, It is preferable to maintain the upper electrode belt at a positive level and the lower electrode belt at ground potential. I found out something wrong. This method involves maintaining the lower electrode belt assembly at ground potential. means mechanical support between the lower cloth, the pole belt binding body 300, and the machine frame 100. Simplifies the manufacture of water supply devices by eliminating the need to electrically insulate connections. make it easier

As a representative example, a similar system shown in detail in FIG. 7 using the Jonin Rollola 202 An electric charge is applied to either of the electrode belts 201 and the belt 301 for 1/2 milliseconds. No. Figure 7 is an enlarged view of the part of the Jonin Rolla 202, or For convenience, we show how to apply a charge to the upper electrode belt5. both the inlet and outlet rollers associated with each of the two upper and lower electrode belt assemblies. to apply the lower electrode bell) 201 and lower electrode bell) 301, respectively, through a person. Similar structures can be used. In the application consisting of upper and lower %, respectively, the pole belt set Only seven of the rollers associated with each of the bodies 201, 301 are suitable for the pole belt. This may be necessary to maintain a certain amount of charge. However, the nature of the belt Depending on the belt and its manufacture, electrical discontinuities may be formed in the belt, including Each belt has multiple loading rollers as well as inlet and outlet rollers associated with the belt. Requires energy source.

Referring again to FIG. 9, roller 202 is made of an electrically conductive material and has at least One end thereof has a recessed end cap 211. Each end of roller 202 has a suitable It is rotatably supported by a support block 212, and this block is 201, each of which extends horizontally and is carried between the upper running part 208 and the lower running part 204. It is supported from the end of frame member 215. Roller 202 and entire upper electrode assembly The body is electrically isolated from the machine frame 100 by a suitable insulator, and this insulation According to the body, the upper row 2 assembly 200 is supported by the machine frame structure 100. , and electrically isolated from the structure 100. The electric charge is a brush or mineral. Contact@electrode bell via recessed roller end cap 7'211 by assembly 280) Added to 201. A plurality of sh bodies, that is, cables 231, which serve as an electric energy source, The brush or wiper contact 282 is connected to one of the brackets 283. The other end of the bracket is carried by one end of the bracket and the other end of the bracket is attached to the machine frame 10. 0 is identified as an air insulator 234 electrically isolated from the air. The brush 282 is h in the end cap 211 [is carried in place and in contact therewith, so that the desired charge level and polarity are applied to roller 202, which causes electrode belt 201 to the desired voltage level and polarity.

Similarly to the lower electrode belt 801, a predetermined tension is applied to the upper electrode belt 201 to There is no material between the lower surface of the lower running part of 201 and the clay material in contact with it. Maintain a qualitatively uniform contact surface. Tension roller assembly 250, shown in detail in FIG. applies tension to the upper electrode bell) 201, and the assembly is connected to the lower electrode bell) 301. It is constructed in a similar manner to lower tension roller assembly 350. However, tension Support frame that supports the bearing block 252 that rotatably supports the row 2251 253 and vertical guide rods 254 by horizontally extending frame members 205. The frame member 205 determines the length of the running portion of the upper electrode assembly 200. Ru.

The tension roller 251 is placed on a predetermined top to maintain the desired tension on the top (pole) 201. To exert a directional force, the support frame 258 has vertically arranged lever arms 25. 5, and the other end of the lever arm 255 is a weighted lever/fulcrum assembly. It is connected to the free end 256 of the lever arm 262 of the body 260. Lever/fulcrum Assembly 260 is carried by horizontally extending frame member 205 and includes a plurality of A harpoon 261 is carried on one end of the lever arm 262. In this way, lever The arm 262 is attached clockwise around a fulcrum 268 as shown in FIGS. 2 and 3. is urged, thereby applying an upward force to the end 256 connected to the lever arm 255. There is. By adjusting the size and position of the main lever 261 to xh, the supporting frame 2 The upward vertical force applied to 5B can be varied.

Maintaining a uniform contact surface of the lower running portion 204 of the upper electrode bell) 201 with respect to the clay material. The downward force is applied by a plurality of spring-loaded idler rollers 220 to assist in the Added to the upper surface of the lower run. These rollers 22o (seven of which are shown in Figure 6) (shown in detail in Figure 2) is supported from the bottom of a horizontally extending frame member 205 and is is added to the lower running portion of the electrode belt 201. The magnitude of this force is It is defined by a pair of springs 221 supporting each end. Good luck, Canada The applied force maintains contact between the lower running portion 204 of the upper electrode belt and the clay material. It must be sufficient to form the lower tb belt 801 and be free from clay or clay. The rod, which extrudes the clay material through a hole or opening 306 through which the removed liquid passes, is not large. stomach.

As best shown in FIG. 4, which is an enlarged view of one of the rollers 220, each roller is rotatably supported at both ends by suitable bearing block assemblies 225. Nene・i The receiving block assemblies each include a horizontally extending frame by a pair of threaded rods 222. The threaded rod 222 is suspended from the lower part of the frame member 205 and has a Glock bearing. Negatively pass through the hole formed in the assembly and fixed to the horizontally extending frame member 205. It is. In this way, the bearing block assembly 225 is attached to the auxiliary rod 222. The horizontally extending frame member 205 is biased from the bottom of the horizontally extending frame member 205. The lower running portion 204 of the upper electrode belt 201 is brought into contact with the lower running portion 204 of the upper electrode belt 201. surrounding rod 222 The compression spring 221 has a downward direction which can be changed by means of an adjusting nut 223. Add force. One end of each rod 222 is attached to a horizontally extending frame member 205. A stop 224 is formed at the other end of the rod so that the rod 2220 is directed downward. limit the vertical movement of the

The lower running part 204 of the upper electrode Pel) 201 and the upper running part 303 of the lower A&belt 301 The distance between the two is kept constant in Figure 2, but the clay yeast passes through the When the liquid is driven from the clay yeast by the valve action, the thickness of the material is The material decreases as it passes from the inlet nip 101 to the outlet nip 108.

Therefore, the spacing between the two outer electrode belts is such that the clay (-) is passed from the nozzle 10 to the lower electrode belt. Two inlets 7'lO1 to Ueda Rolla 2 (17 and Gradually up to the output f10B formed between the top surface 303 of the pole belt 801 The fact that it is narrow is reassuring.

Clay material is pushed into or extruded from the 30' hole 806 of the lower electrode bell). Two electrode pels) 201, 801 while preventing excessive compressive force that could cause In order to create the desired taper in the upper electrode assembly 200, the upper electrode assembly 200 is attached to the vertical suspension rod 2. 61 is suspended from the machine frame 205 by 260; The upper die & hell) 201 is connected to the inlet nip 101 by the exit nip 10 by the suspension rod of The amount is determined by narrowing the area at a constant rate toward 3. It is shown enlarged in Figure S. The suspension system 260 includes a vertically extending threaded rod 261, and the rod 260 includes a vertically extending threaded rod 261; through a hole formed in the top member 105 of the frame 100 of the machine, and The lowermost end thereof is connected to an electrically insulating joint 262 and is connected to the suspension device 260. , without transmitting the M load applied to the electrode assembly to the machine frame 100. Body 200 can be held in place.

A link member 263 is suspended from the bottom of the insulating joint 262, and this link member , the other end of which is suitably secured to the upper portion of the horizontally extending frame member 205. It is connected to a racket 264. A pointer 265 is attached to the upper end of the threaded rod 261. are connected, and this pointer is connected to a valve-quasi marker 266 fixed to the frame member 105. In combination, the spacing reference point is given, and this reference point allows the vertical alignment of the threaded iron 261. Adjust the position vertically depending on the charge in the thickness of the clay material. 1 and the upper running portion 803 of the lower electrode belt 301. and can maintain constant contact with the clay material. Clay #ilJ% equipment When passing, the tapered interval between the upper and lower electrode belts is constant for each of the threaded irons 261. Nut assembly 26? contact with the clay material while the clay passes through the device. You can cry when you cry.

When the clay cake exits the device via the beading roller 307, it is removed from the clay material. A clay cake with at least 70% solids, with a substantial amount of liquid removed. form. This clay cake passes over the Shimoyama Rolla 307 to crush the clay cake. machine (not shown), the electrode belt continues to rotate, and the material flows from the nozzle to the yeast. Since the material is introduced as When the clay cake is discharged , the belt 201,801 passes through a cleaning station where the clay material Clean the surface of the belt that comes into contact with the surface of the belt by spraying it with submerged water and then Dry the root by exiting the air dryer.

Now, referring to the lower electrode assembly 800, the lower electrode belt 301 is connected to the beaded roller 30. 7, thereby discharging the filter cake into a cake crusher (bell) 301 rotates through a multi-station belt cleaning assembly 370 (shown in FIG. 2). At this assembly 370, the belt passes under the purple power row 2851. The jetting head 371 directs the water fountain upward against the belt surface, and the water flows out. Drains from the belt into a perspective drain pan 872 and out through a drain port 873 . Belt 801 is then exposed to a multi-stage air dryer 380, which Then, the air nozzle 381 releases air toward the belt surface to remove the cleaning water and clean the belt. substantially dry the root surface.

I81, when passing through Ueyama Rollo 2207 and Uehari Kalow 2251, the upper electrode The belt 201 passes under a belt cleaning station 270 where it is exposed to water spouts. 271 injects circulating water onto the outer surface of the belt. The belt 201 is then connected to an air dryer. 280, where the release of air from air jets 281 removes any residual cleaning. Remove the purified water and dry the belt thoroughly for further processing.

Illustrating the structure of the device in operation, the preferred embodiment has no trace of mixed gold PA oxide. It has an upper g-pole belt 201 of titanium or tantalum substrate with Dimensions available from the Diamond Jamrock Company in Chiyadon, Ohio Inexpensive anode (Dimensional ly 5table Anode) and A type of platinum metal called oxide.

Preferably, the lower market belt 301 is externally grounded for constructional convenience, and the upper market belt 301 is Electrode assembly 200 is isolated from machine frame 100 and is free of electroosmotic dehydration. charged with a voltage sufficient to cause During the first renewal, the effective area of the anode is The voltage per inch is I'f, 'I - 20mv, or the voltage per square inch tD. It was found that the river flow density of about 0.05 to θ, l5 amps was satisfactory. Ta.

The speed at which the belt 201°801 moves in passing the clay material through the device is , depending on the length of the parallel running section between the belts. h as a satisfactory belt speed, clay The quality of the belt is maintained in the electric field for at least about 7 minutes or less. This should not be done at such a rate that the desired I It is effective to remove sufficient water to replace the water content.

water is removed from the clay material through the taper K of belt 201 towards belt 301 As the thickness of this movement decreases, the belt remains constantly fused with the clay material. It is. A suitable taper range is approximately inches apart between the openings at the inlet nip 101. (/, 27cm) to 3 inches (7, Otsu λα). Therefore, Deronitsu'7D1 03 is approximately 3 inches (7, 2 crn) to approximately 3 inches (7, 2 crn). L) Separate the following intervals.

Similarly, the flow rate at which the clay paste is introduced into the Yuesui apparatus is two frosts, polar bell I-2. 01,, 301 and maintain contact with upper Pel) 201. Must-have. Therefore, the actual flow of introducing the gas into the inlet nip 101 is changes to achieve the objectives of and.

Although the invention has been described in the specification with reference to preferred embodiments and illustrated on page 7, those skilled in the art A person may make various modifications without departing from the scope of the invention, and , it will be understood that equivalents may be substituted for elements of the invention. In addition However, it is possible to modify a particular situation or material to the teachings of the invention without departing from the essential scope thereof. The invention is shown in the drawings as the best mode presently contemplated for carrying out the invention. Not limited to the specific embodiments depicted and described in the specification, but also included in the attached It is intended to include all embodiments falling within the scope of the following claims.

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Claims (16)

[Claims] (1) water-containing clay to form a clay cake with at least approximately 70% solids content; A device for dehydrating things, They are located adjacent to each other and spaced apart from each other, and each has a clay material contact area. at least two electrically conductive transport mechanisms having a surface and a supported inner surface; A device for moving the electroconductive transport mechanism in the same direction and at the same linear velocity on an endless moving path. and the conductive transport mechanism, and between the conductive transport mechanism and the conductive transport mechanism. a liquid-containing clay material movable along at least a portion of the end travel path; a device introduced into the space between the electrically conductive transport mechanism and the electrically conductive transport mechanism; and removing at least one portion of the liquid from the clay material passing between the conductive transport mechanism. a device for creating an electric field between the conductive transport mechanism with a strength strong enough to electrokinetically drive the conductive transport mechanism; , Add enough liquid to form a clay cake with at least 70% solids. Since the clay material is driven by electromotive force, the conductive transport mechanism and the and moving along at least a portion of the endless moving path between the conductive transport mechanisms. a device for maintaining continuous contact between the clay material and the conductive transport mechanism; 1. A dewatering device for a liquid-containing clay material, comprising: (2) The conductive conveyance mechanism consists of two conveyor belts, and these belts are a clay material moving between and between said belt and said belt; To help maintain continuous contact, the travel path of each of these belts is Both are positioned so that their parts taper toward each other. A device according to claim 1. (3) The conductive conveyance machine that tapers a part of the endless movement path of the conductive conveyance mechanism. The structure positioning suspension device electrically isolates the conductive transport mechanisms from each other. a support device, said suspension device determining a spacing relationship between said conductive transport mechanisms; The device according to claim 2, further comprising a display device for displaying Place. (4) The conveyor belt is used between belts when removing water from clay material. approximately at the entrance nip to the device, sufficient to maintain continuous contact with the clay material passing through the The exit gap between the conveyor belts is between 1/2 and 3 inches (1.27 and 7.62 cm). between approximately 1/4 inch (0.63 cm) and less than 3 inches (7.62 cm) 3. Apparatus according to claim 2, characterized in that it is positioned at. (5) to maintain continuous contact between the clay material and the conductive transport mechanism; the apparatus includes a plurality of support rollers positioned in contact with the support surface; A support roller connects the support surface to support the clay material contacting outer surface in position. Claim characterized in that it is rotatably supported so that it can be moved freely. Apparatus according to scope 1. (6) The support roller is spring-biased and comes into contact with the support surface. The apparatus according to claim 5. (7) to maintain continuous contact between the clay material and the conductive transport mechanism; said device is positioned in contact with said support surface and moved therewith. a tension roller movably rotatably supported, the tension roller being It is restricted to be able to move perpendicular to the surface, and applies a downward force to the supporting surface due to gravity. 2. A device according to claim 1, characterized in that: (8) for maintaining continuous contact between the clay material and the conductive transport mechanism; the device is positioned in contact with and moves with the support surface; a tension roller rotatably supported such that the tension roller vertically movable to maintain said clay material contacting outer surface in place; carried by a lever arm for applying an upward vertical force to said supporting surface. 2. A device as claimed in claim 1, characterized in that the device comprises: (9) the lever device for applying an upward vertical force to the tension roller; A lever and fulcrum assembly having a lever arm pivotably supported between two ends. one end of the lever arm is operatively connected to a tension roller, and one end of the lever arm is operatively connected to a tension roller; The other end of the arm is connected to the lever for varying the upward vertical force applied to the tension roller. - characterized by carrying a weight that can be positioned along the arm Apparatus according to claim 8. (10) The device for creating an electric field between the conductive transport mechanisms includes a device for creating an electric field between the conductive transport mechanisms. to engage a portion of the conductive conveying mechanism to create a uniform charge on the machine groove. Claim 1 characterized in that it comprises a positioned wiper contact. The device described. (11) The conductive conveyance mechanism has a pair of conveyor rollers that determine the length of its running section. consisting of two conveyor belts each carried by a The electric wiper contact applies an electrical charge to the conveyor belt via the conveyor roller. positioned within a portion of at least one said conveyor roller to 11. A device according to claim 10, characterized in that the device comprises: (12) The two conductive transport mechanisms shall be approximately 3 inches (7.62 cm) or less. characterized by a distance of approximately 1/8 inch (1.27 cm) or more. Apparatus according to claim 1. (13) The conductive conveying mechanism forms a clay cake with approximately 70% solids content. approximately 1 to 8 minutes or more effective to remove sufficient water from the clay material to Move at the same linear speed along an endless path to create the following retention time in the electric field. A device according to claim 1, characterized in that: (14) Place the liquid-containing clay material into the space between two opposing conductive transport mechanisms. Said device for introducing said liquid-containing clay material into said two electrically conductive carriers. Flow sufficient to fill the space between the mechanisms and maintain contact with the conductive transport mechanism. 2. Device according to claim 1, characterized in that it is introduced in a quantity. (15) The device for creating an electric field between the conductive transport mechanism includes an effective surface of the anode. An electric field having a strength of about 4 to 20 microvolts per square inch of the conductive conveyor 2. The device according to claim 1, wherein the device is constructed between a structure and a structure. (16) The device for creating an electric field between the electroconductive transport mechanisms includes an effective strong enough to produce a current density of approximately 0.05 to 0.025 amperes/in² of area. Claim 1, wherein a large electric field is created between the conductive transport mechanism. The device described in.