JPH0128819B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to metallurgy, and more particularly to equipment for preparing non-ferrous metal solutions.

The present invention can be made in a chemical or metallurgical plant where a formulated non-ferrous metal solution is prepared by passing the non-ferrous metal from polydispersion ores into the solution.

"conditioned solution"
The term is used herein to refer to a solution in which the amount of impurities contained in the form of metals and the amount of undissolved substances does not exceed a predetermined value.

The term "multidisperse" refers to the presence of ore particles of a wide range of different sizes.

The term “split” is used here as a solvent (suspension).
Refers to the coarseness or dispersed composition of the solid particles within.

The term "drum for fine-, medium-, and coarse-sized particles" refers to a drum for trapping, respectively, fine and medium-sized particles in suspension.

The term "leaching sand device" refers to a device for eluting metals and the like from ore sand and particles into a solvent.

The term "oxidant" refers to divalent Fe, for example, to trivalent Fe.
refers to reagents such as manganese that act on the oxidation process.

The term "lock device" refers to a device (such as a cork float) that serves to regulate the flow of reagents in a pipeline.

The term "fluidized bed" shall refer to a bed of particles of solid material (reagent) or ore suspended in an upward flow of fluid for fluidization.

The term "assembly" shall refer to an assembly of several parts of a device for forming a fluidized bed.

The present invention will be found most useful in preparing prepared solutions of the nonferrous metal zinc sulfide by leaching multimetallic ores in sulfuric acid.

One known non-ferrous metal solution preparation installation includes at least two fluidizing bed devices. Each of these devices has one finely divided drum, one medium-sized sheet steel drum, and one coarsely divided sheet steel drum, which are installed in series from top to bottom and are interleaved. We are in touch with each other. The first fluidization bed device has an inlet pipe for introducing the solvent from the solvent preparation unit;
It is equipped with an inlet pipe for introducing raw materials, that is, materials containing non-ferrous metals. Furthermore, each device has an outlet pipe for discharging the coarse fraction and a suspension drain pipe.

In the above-described installation, the finely divided drum of each preceding unit communicates with the coarsely divided drum of each subsequent unit, so that the material in the preceding unit serves as the raw material for each subsequent unit. ing. The final fluidization bed equipment includes a settler or settling tank with a non-ferrous metal solution outlet. (For example, see Japanese Patent Application No. 57-107492 (Japanese Unexamined Patent Publication No. 58-224131), which is earlier than the present application under the name "Nonferrous Metal Solution Preparation Apparatus").

The equipment described above is superior in many respects to prior art equipment used for similar purposes. For example, the non-uniformity of the fluidic fluid velocity across all levels of each fluidizing bed in each device does not significantly affect the quality of the non-ferrous metal solution. However, on the other hand, the interaction time between the raw material and the solvent substance increases. Some of these advantages are discussed in the aforementioned patent applications.

In the above-mentioned installation, as in all similar known installations, the solvent preparation unit is one of the most important components and determines the quality of the solution prepared in the precipitation tank. It is therefore desirable to consider how the solvent affects the operation of the equipment and how the differences between the various known solvent preparation units collectively affect the operation of the equipment as a whole. .

As is obvious to those skilled in the art, the raw material in the fluidizing bed device is processed with the aid of a fluidizing flow, and this fluidizing flow moves the raw material and solvent upward toward the raw material in the fluidizing flow. It is produced by mixing to form a so-called fluidized bed (or simply fluidized stream) of a particle suspension.

In known installations, the engineering processes in the first fluidizing bed device, for example the pre-preparation of solutions intended for the oxidation of reusable non-ferrous solutions, are carried out by means of what is called an oxidizer. (For example, “Concise Handbook on Nonferrous
Mettlurgy”by Gudima NVShein YP,
(See Metallurgia Publishers, 1975, p. 318)
It will be appreciated that when an oxidizer is used, the oxidant and solvent pass through parallel paths and that there are preferably two or more devices connected in series. This makes the construction of this type of equipment inherently complex and the excessive amount of equipment in the process impairs operational reliability and efficiency. Furthermore, for the same reason, ferrous iron present in nonferrous metal solutions is not oxidized by the widely accepted technique of neutral leaching of these metals from multimetallic ores. This is due to the fact that as the initial solvent passes through the oxidizer, the oxidation of ferrous iron proceeds by consuming the (active) finely divided form of the multidispersed oxidant, i.e., the manganese ore or manganese slurry. It will be explained. The oxidized solution is therefore introduced into the known equipment together with the mostly passive particulate oxidant. This only complicates the operation of the solution settling tank and does not assist in the oxidation of the ferrous iron that enters the solution during the neutral leaching of the ore. It is common knowledge that the ferrous iron is very poorly precipitated, while its oxides, ie ferric iron, are almost completely precipitated. At the same time, the precipitation of ferric iron is caused by germanium, arsenic,
The degree of precipitation of harmful impurities such as antimony and silicon also increases. (For example, “Concise Hendbook
on Nonferrous Metallurgy”, by NV
Gudima, YPShein, Metallurgia Publishers,
1975, p. 316) In this way, it becomes impossible to separate toxic metals from the prepared solution by precipitation using a special oxidizer, and on the other hand, it is impossible to additionally introduce active oxidants into a solution precipitation tank. This increases the load on equipment, which impairs the reliability of equipment operation.

As can be seen from the above, installing one or more oxidizers in the non-ferrous metal solution preparation equipment described above complicates its operation, impairs the continuous preparation process of the prepared solution, and further reduces the equipment efficiency. increasing investment costs and expenses for establishment and operation;

Throughout the operation of prior art non-ferrous metal solution preparation equipment, it has been found that if the supply of solvent through the inlet pipe into the coarse dividing drum of the first fluidizing bed device is inadvertently or forcibly interrupted, even for a short time, the first It has been found that the predetermined flow rate of the upward flow will decrease throughout the length of the fluidizing bed device. In other words, the most important conditions for continuous preparation of prepared solutions of non-ferrous metals are violated. At the same time, this results in the fluidized bed of each split ore particle becoming inactive. This is because in this case fine, medium sized and coarse particles cannot be lifted up and suspended due to the lack of upward flow within the fluidizing bed device.
Gravity causes these particles to move downward and settle in the coarser drum and then into the coarser discharge pipe.

The coarse dividing drum and coarse dividing body discharge pipe are typically hundreds of times smaller in diameter than the cross section of the coarse dividing drum or medium size dividing drum. Therefore, if the supply of solvent, which is normally supplied at a sufficiently high rate (higher than the rate at which the sand is discharged from the first fluidizing bed device), is interrupted, the precipitation of the precipitated particles will be reduced. In this case, it becomes difficult to restore the homogeneity of the fluidization that has been disrupted when the solvent supply is restarted.
The use of additional equipment to smooth out wanders complicates the processing equipment and its maintenance, as does shutting off the solvent supply means for short periods of time. On the other hand, it is necessary to ensure efficient continuous preparation of non-ferrous metal solutions.

In the known apparatus, the sand after treatment in the hydraulic classifier is conveyed by a pump or some other delivery or transport means into some well-known agitator for secondary leaching. As is well known, means for transporting abrasives, including sand, have an extremely short lifespan. Therefore, the use of these devices in an installation reduces operational reliability and complicates its operation. From the above, the reliability of operation of equipment for preparing non-ferrous metal solutions can be improved by eliminating the device for transporting the sand (coarsely divided material) after discharging it from the first fluidization bed device, or by simplifying the structure. Improved by reducing the number or reducing the number.

In one of the widely known types of non-ferrous metal solution preparation equipment, the suspension obtained at the outlet from the suspension drain pipe of the second fluidizing bed is
The pH is controlled by measuring the amount of solvent supplied to the inlet pipe of the first fluidizing bed device. This reduces the feed rate until the PH of the suspension recovers to the predetermined value in the second fluidizing bed.
On the other hand, this impairs the quality of the prepared solution due to the time inaccuracy, which affects the above-mentioned values of the non-ferrous metal solution obtained in the installation.

In a desirable non-ferrous metal solution preparation facility, a solvent and oxidant supply system would yield a higher ferrous to ferric oxidation efficiency, thus ensuring the most efficient use of solvent and oxidant in the entire facility. Provided to ensure improved operational reliability and simplicity of construction.

Therefore, the present invention comprises a steel plate drum for finely divided bodies, a steel plate drum for medium-sized divided bodies, and a steel plate drum for coarsely divided bodies, each of which is interconnected in series from top to bottom. a series coupling device assembly having a leading first device of the fine-dividing body drum communicating with a succeeding second device of the coarse-dividing body, while a final device of the assembly communicating with a settling tank; , each device has an outlet pipe for discharging the coarse fraction, and the first device of the assembly has an inlet pipe for introducing the raw material, and a non-ferrous base, which is adapted to lead to a solvent conditioning unit. In an installation for preparing metal solutions; the solvent conditioning unit consists of a leaching sand apparatus having a hydraulic classifier mounted above it and in communication with said unit, said hydraulic classifier having one It has one inlet pipe connected to the coarse dividing drum of the first device of the assembly through two lines, and the outlet pipe of the leaching sand device and the outlet pipe of the hydraulic classifier are hydraulically It is connected through a line to the coarse dividing drum of the first apparatus, while the coarse dividing body drum of the first apparatus provides an installation according to the invention with an oxidant inlet pipe.

Such a structure and arrangement makes it possible to dispense with special equipment for carrying out the oxidation of ferrous iron in the initial solution or preparation solution for the first fluidizing bed device, while the structure of the processing device is simplified, facilitating manipulation and improving the quality of the solutions prepared. The higher quality of the solution prepared is obtained in addition when the multidispersed oxidant introduced via the inlet pipe for receiving the raw material is fluidized in a first fluidizing bed device. The coarsely divided bodies of the oxidant are fluidized in a drum for coarsely divided bodies, the medium-sized divided bodies are fluidized in corresponding medium-sized divided body drums, and the finely divided bodies are fluidized in a finely divided body drum. obtained by the fact that it is It is well known that the velocity of upward flow of solution in the coarse and medium sized part drums of the first fluidizing bed apparatus is many times faster than in the fine part part drums. The fine, ie the most chemically active, oxidant particles are therefore quickly carried away by the upward flow into the finely divided drum of the first fluidizing bed.
In other words, the fine fractions of oxidant are substantially not used for the oxidation of the ferrous iron in the coarse and medium fraction drums. As is known to those skilled in the art, the rate of interaction between oxidant and ferrous iron is inversely proportional to oxidant particle size and depends on the acidity of the medium and the effective turbulent diffusivity of the solution and oxidant. ) is directly proportional to It is also known that the acidity of the solution is higher in the coarsely divided drum and the mediumly divided drum in the first fluidizing bed device than in the finely divided drum and in each drum in the second fluidizing bed device. It is being Considering the distribution of the above-mentioned oxidants in the first fluidizing bed device, the improvements in structure and operability proposed by the present invention allow for the production of multiple dispersed metals in the initial solution and in the first fluidizing bed device. It can be confidently stated that the ferrous oxidation strength to be maintained both in the solution obtained by leaching the ore can be spontaneously made possible.

At the same time, the consumption of oxidant can be reduced by more efficient use of coarse and medium-sized fractions of oxidant (since these fractions are mostly dissolved in the acidic medium). On the other hand, by using a fine fluidized oxidant (which is the most active in terms of the interaction between ferrous iron and oxidant), Maximum oxidation; this ensures precipitation of harmful impurities during the neutral leaching stage and increases the efficiency of the equipment.

The present invention will be described in detail below using embodiments of the present invention with reference to the drawings.

The illustrated equipment is a first fluidization bed device 1.
, a second fluidizing bed device 2, a solvent conditioning unit 3' consisting of a sand leaching device, a hydraulic classifier 4 and a suspension settling tank 5.

The devices 1, 2, and 3 are arranged so that their long axes are oriented vertically and parallel to each other. The vertical axis of the hydraulic classifier 4 and the vertical axis of the settling tank 5 are parallel to the vertical axes of the above-mentioned devices.

The fluidizing bed device 1 has a tapered steel plate drum 6 for finely divided bodies, a tapered steel plate drum 7 for medium-sized divided bodies, and a tapered steel plate drum 8 for coarsely divided bodies. The drums are connected in series to device 1.
They are arranged vertically from the top to the bottom. Furthermore, the fluidizing bed device 1 has an inlet pipe for receiving solvent. This inlet pipe 9 fits into the lower wall of the drum 8 and communicates with the solvent preparation unit 3'.

Connected to the lower part of the drum 8 is an outlet pipe 10 for discharging the coarse particles known as sands in hydraulic metallurgy.
The outlet pipe 10 extends along the longitudinal axis of the device 1.

A raw material receiving inlet pipe 1 connected to the upper part of the drum 6 for finely divided bodies and extending along the longitudinal axis of the device 1
1 is provided. The inlet pipe 11 leads to a raw material source (not shown), such as a multi-dispersed calcined zinc ore feed.

The pipe 11 extends slightly above the finely divided drum 6 and is fixed to the wall of the drum 6 by suitable means not mentioned here and not shown for simplicity. At least one suspension drain pipe 12 adapted to the side wall of the drum 6 and at the top of its cylindrical part
is provided.

The fluidizing bed device 2 has a steel plate drum 13 for finely divided bodies, just like the fluidizing bed device 1, the upper part of which is cylindrical, the lower part is conical, and has a medium size drum. It has a tapered steel plate drum 14 for dividing bodies and a tapered steel plate drum 15 for coarsely dividing bodies, and all these drums are connected to the device 2.
are arranged in series from the top to the bottom over the entire vertical length of the pipes, and communicate with each other. The fluidizing bed device 2 has at least one bed for receiving raw materials.
It has two inlet pipes 16, in which case the raw material is a suspension flowing out of the fluidizing device 1, so that the inlet pipe 16 has two inlet pipes 16, in which case the raw material is a suspension flowing out of the fluidizing device 1; It communicates with the liquid drain pipe 12. The inlet pipe 16 is fixed to the side wall of the drum 15 at its lower part.

Connected to the lower part of the drum 15, an outlet pipe 17 is provided for discharging the coarsely divided bodies, and this outlet pipe extends in the vertical direction of the device 2.

At the upper part of the finely divided body drum 13, a suspension drain pipe 18 is fixed to its side wall. Alternatively, a trough may be used to serve as the drain pipe 18.

The vertical dimension of the fluidizing bed device 1 is such that its drum 6 extends above the top of the drum 13 and is sufficient so that the head pressure created in the drain pipe 12 during operation facilitates the transfer of the suspension stream from the drum 13 to the settling tank 5. It is like becoming something.

The suspension sedimentation tank 5 has a main body consisting of a cylindrical upper part (not shown) and a tapered bottom part 1 in contact with this upper part.
It has 9.

An outlet pipe 20 is fixed to the bottom 19 of the tank 5 for discharging the precipitated material, and an outlet pipe 21 for discharging the non-ferrous metal solution is fixedly connected to the side wall of the cylindrical part.

The tank 5 is closed with a cover 22 and is located in the immediate vicinity of the fluidizing bed device 2.

As mentioned above, the solvent preparation unit 3' includes a sand leaching device 3 and a hydraulic classifier 4.

The brewing device 3 may have any suitable structure, for example as an evaporator or similar in structure to devices 1 or 2. In the latter case it is a tapered drum 23 for the coarse dividing body.
and a tapered drum 24 for a medium-sized segmented body.
It has a tapered drum 25 for the finely divided bodies in close proximity to its upper part by walls 26. Any of these drums 23, 24, 25 is connected to the device 3.
They are arranged in series over the entire vertical length of the tubes and communicate with each other. The upper wall 26 has an opening 27
and a solvent inlet pipe 9 of the first fluidizing bed device.
and a suspension drain pipe 28 connected to the suspension drain pipe 28. An outlet pipe 29 is provided in the lower wall of the drum 23 for discharging undissolved substances from the fluidizing bed 3.
and an inlet pipe 30 for supplying solvent to the fluidization bed device 3 are fixed.

The openings 27 in the wall 26 of the fine divider drum 25 lead to the hydraulic classifier 4 via a sand discharge pipe 31. The structure of the hydraulic classifier 4 is well known to those skilled in the art and will not be described here.
However, it should be noted that the hydraulic classifier has a region of fine segmentation and a region of coarse segmentation.

The hydraulic classifier 4 has an outlet pipe 33 for discharging the solution containing the finely divided bodies and is connected with an inlet pipe 34 for introducing the solution containing the finely divided bodies into the first fluidization device; Furthermore, inlet pipes 36 and 1 for receiving the solution containing finely divided bodies into the coarsely divided body drum 15 of the second fluidizing bed device.
They are connected via two locking devices 35. Furthermore, the classifier 4 has an inlet pipe 37 intended to introduce the raw material for classification and whose outlet is connected via a valve 38 to the outlet of a hydraulic line 39.
is connected to. A hydraulic line 39 connects its inlet with a pipe 10 for discharging the sand of the first fluidizing bed device 1 and with one feeding device 4.
an outlet pipe 42 for discharging the solution from the coarse-dividing body drum 8 through one locking device 41 in series;
It is connected to The connection of the above-mentioned elements to the inlets of other hydraulic lines 39 does not change the subject matter of the invention.

An inlet pipe 43 is provided on the side wall of the coarsely divided body drum 8 for introducing the oxidant into the first fluidizing bed device 1.
is fixed. The installation according to the invention also includes locking devices 44, 45, 46, the locations of which are described below and shown in the figures.

The outlet pipes 17 and 20 are provided with locking devices (not shown) of known construction which may be provided by suitable biasing bodies of any known design and will therefore not be described here for the sake of brevity. do not.

To facilitate the installation and operation of the equipment, the first fluidizing bed device 1 is preferably closed with one horizontal plate having an opening in contact with the lower edge of a medium-sized segment drum 7 (not shown); In this case the pipes 34, 42 and 43 are arranged at the periphery.
However, this arrangement will not be discussed here for the sake of brevity.

The operation of the non-ferrous metal solution preparation equipment, hereinafter referred to as the "installation", is utilized to prepare a formulated zinc sulfide solution during the leaching of a multimetallic ore of zinc, i.e. a multimetallic multidispersed zinc oxide ore. Let me explain only the case where In this case, the oxidation step of the zinc sulfide solution containing ferrous iron is always accompanied by the use of multidispersed manganese ore or pulp.

Prior to operation, a sulfuric acid solvent containing not less than 60 to 160 g of sulfuric acid was added to the fluidizing bed devices 1 and 3.
is introduced with sufficient pressure to overcome the maximum value of the hydraulic force from. Solvent is pipe 3
0 into the lower part of the drum 23 of the device 3, whereby a fluidized stream is produced in the drum 23 and in the following drums 24, 25. Furthermore, the solvent passes through pipes 28 and 9 into the lower part of drum 8 of fluidizing bed device 1, thereby creating an upward fluidizing flow in drums 7 and 6.

The zinc ore received into the apparatus 1 via the inlet pipe 11 is redistributed in the fluidized stream within the fluidized bed apparatus 1 and substantially all the zinc ore particles are suspended in said stream. Multidispersed manganese ore is fed in metered proportions via an inlet pipe 43 into the apparatus 1 in which fluidization is to take place.

Coarse ore particles of zinc and manganese are thus suspended in drum 8, medium sized particles are suspended in drum 7, and fine particles are suspended in drum 6. In this way, a fluidized bed of all particles is created in the apparatus 1 as a multidispersed multimetallic ore of fine, medium and coarse particles of zinc and manganese, depending on the conditions. This sorting of particles is useful for all devices. As the zinc ore particles react with the solvent particles in each fluidized bed, the basic nonferrous metals zinc, cadmium, iron, and other metals or minerals go into solution from the ore particles. In other words, they dissolve; in other words, they leach.
be done.

When the multiple ore of zinc is leached in the fluidizer 1, the secondary metal becomes a solution as a simultaneous step with the basic non-ferrous metals zinc and cadmium. In hydraulic metallurgy for the production of copper, cobalt, nickel, iron, antimony, arsenic, germanium, silicon, indium and other chemical elements zinc and cadmium, metals called impurities are It becomes a solution. The solution obtained as a result of leaching, containing these impurities and undissolved substances, is hereinafter referred to as a suspension.

Fine particles of manganese ore fluidized in the device 1,
Since the medium-sized and coarse pieces are continuously washed with the solution, the ferrous iron that has entered the initial solution and during the leaching process of the zinc ore undergoes strong oxidation. It is the finely divided bodies of manganese ore which are fluidized in the drum 6 of the device 1 and throughout the vertical direction of the fluidizing bed device 2 that particularly bring about a sufficient oxidation of the ferrous iron.
The beds of finely divided bodies of manganese ore formed high enough are characterized by a generated surface that allows chemical interactions to occur, almost completely eliminating the iron content in the suspension formed during the leaching process. Oxidize.

As a result of the continuous chemical reaction of the solvent with the fluidized zinc ore particles in the apparatus 1, the activity of the solvent is reduced and the chemical reaction with the raw material is suppressed. In other words, the hydrogen index, or PH, increases. Conditions are thus created in which the impurities in the suspension in the drum 6 begin to transform into insoluble compounds. That is, impurity hydroxide such as copper hydroxide is precipitated.

It is known that this process progresses further and coagulation of the silicic acid occurs, during which time the viscous salt of ferrous hydroxide forms a gel. That is, the process of cleaning the impurity suspension proceeds in proportion to the degree of ferrous oxidation in the resulting suspension. As already mentioned, sufficient oxidation of ferrous iron is possible without any special equipment. This is achieved in the present invention by supplying the solvent via inlet pipe 43.

Due to the presence of impurities hydroxide and gelled silicic acid and insoluble residue particles, flocculation of the insoluble residue occurs in the device 2. The suspension containing the wool compound enters the suspension tank 5 from the drum 13 of the device 2 via the drain pipe 18. Undissolved substances settle on the tapered bottom 19 and exit the outlet pipe 20.
is discharged from. On the other hand, chemically adjusted non-ferrous metals are fed through an outlet pipe 21 for further processing, although not described here.

Since the continuous preparation of conditioned non-ferrous metal solutions depends on the reliability of the operation of the equipment as well as the accuracy of the maintenance of the expected value of the hydrogen index of the resulting suspension, improvements in the operation of the equipment are discussed here. I'll keep it.

As mentioned above, the polydisperse particles of zinc and manganese ores are classified by size. However, the fluidized part of the ore is deposited below the inlet of the pipe 9 connected to the drum 8. If the precipitated particles are not continuously removed from the drum 8, the device 1 or the entire installation will be inoperable. The settled particles or settled sand are thus continuously or intermittently removed from the drum 8 via the lock valve 45 and the outlet pipe 10.
Furthermore, the feeding device 40 is operated to transfer sand directly to the hydraulic line 39 via the lock valve 41 and the pipe 42. (Although the sand is not shown, it may be arranged to pass through an intermediate agitator, and in this case, the sand from there to the inlet of the hydraulic line 39 is the feeding device 4.
It will be sent by 0. ) The above-described embodiment for receiving and transferring sand is preferred because sand may become clogged in the outlet pipe 10 and the valve 38 would become blocked. As a result, the head pressure of the solution at the output point of the feeder 40 increases until there is no sand clogging. The valve 38 is then opened and the sand is hydraulically fed via the inlet pipe 37 to the hydraulic classifier 4.

Once inside the hydraulic classifier 4, the sand is separated from the fine dividers and is injected by gravity through the valve 32 and opening 27 into the fluidizing bed device 3. Device 3
Therein, the sand is once again divided into coarse, medium sized and finely divided bodies and further fluidized in each drum 23, 24 and 25. The process within device 3 is enhanced if device 3 is surrounded by steam or by another (not shown) heating jacket. Gangue or undissolved residue is discharged for disposal via lock valve 44 and outlet pipe 29.

The finely divided solution, once separated from the sand, enters the drum 8 via pipes 33, 34 and takes part in creating a fluid stream in the drums 7 and 6 of the device 1. The overall sluggishness of the hydraulic line 39 and the hydraulic classifier 4 is so great that the particles become fluidized in the devices 1 and 2 during the short period of solution supply to the pipes 30 and/or 9. It remains in the same state as it was. In other words, the continuous preparation of solutions is not discontinuous and the operation of the equipment is not interrupted.

Components 39, 40, 4 in the above embodiment
1 and 42, the fluidized state of the particles in the device 1 continues long after the supply of solvent to the pipe 30 is cut off. This is component 42,4
This is possible because the solution exists throughout the hydraulic circuit consisting of 0, 39, 31, 27, 28, and 9. Also, this allows the pipe 30
It becomes possible to restart the equipment in the shortest possible time after a long period of time has elapsed since the supply of solvent to the system. This is because settling out of all the particles in the device 1 is not possible unless the suspension is discharged therefrom via the outlet pipe 10. A portion of the solution containing the finely divided bodies is transferred from the hydraulic classifier 4 to the device via a lock valve 35 and further a pipe 36, the degree of opening and closing of which is determined by the deviation of the pH of the suspension in the pipe 18. 2, thereby keeping the pH of the suspension at the predetermined value. The process control is extremely easy and the tank 5 is
The time for deviation of the hydrogen index of the suspension from the expected value is negligible. To be more precise, it can be reduced by 2 to 3 times. This is equipment 1 and 3
This can be explained by the fact that the volumetric capacity or slowness of operation of the fluidizing bed device 2 is greater than that of the fluidizing bed device 2.

The equipment of the invention has demonstrated high operational reliability in the continuous preparation of non-ferrous metal solutions prepared by industrial tests.

30g/at the time of input of the first fluidizing bed device
When the process of leaching multi-dispersed multimetallic zinc oxide ore is carried out in equipment 1 using an initial solvent with the above sulfuric acid concentration, the production capacity exceeds 130 tons per day (t/m ³ ·day) for 1 m ³ of equipment. When using 50 g/m of solvent, the amount was 220 t/m ³ ·day.

The equipment of the invention is capable of leaching multi-metal multi-dispersed ores using sand on the one hand, with continuous particle size classification and high oxidation of the solution to be carried out in one fluidizing bed device. most efficient.

When zinc oxide ore is leached with this equipment, leaching of the soluble basic metals is carried out to the highest possible extent, while secondary metals such as Fe, Al, Sb, etc.
The activity of leaching of Ge, As, etc. (impurities) is reduced.

Furthermore, the operation of the equipment is simplified.

It should be noted that with the invention a high operating efficiency is achieved, especially without the aid of additional equipment, which also makes it possible to simplify the construction and increase the reliability of operation. All of the equipment's engineering processes are suitable for microcomputer control.

Although the invention has been described herein with reference to preferred embodiments, numerous modifications may be made to the equipment shown in the drawings without departing from the spirit of the invention as set out in the claims.

[Brief explanation of drawings]

The figure is a schematic cross-sectional view of one piece of equipment for preparing a non-ferrous metal solution. DESCRIPTION OF SYMBOLS 1...First fluidization bed device, 2...Second fluidization bed device, 3'...Solution preparation unit, 3...
...Fluidization bed device of unit 3', 4...Hydraulic classifier, 5...Suspension sedimentation tank, 6...Drum for finely divided bodies, 7...Drum for medium size divided bodies. , 8...Drum for coarsely divided body, 9...Inlet pipe for introducing solvent, 10...Outlet pipe for discharging coarsely divided body, 11...Inlet pipe for introducing raw material, 12...
Suspension drain pipe, 13...Drum for finely divided bodies, 14...Drum for medium size divided bodies,
DESCRIPTION OF SYMBOLS 15... Drum for coarsely divided bodies, 16... Raw material introduction inlet pipe, 17... Outlet pipe for discharging assembled divided bodies, 18... Suspension drain pipe, 19... Tapered bottom, 20... Sedimentation Outlet pipe for discharging the residue, 21... Outlet pipe for discharging non-ferrous metal solution,
22... Cover, 23... Drum for coarsely divided bodies, 24... Drum for medium size divided bodies, 25...
...Drum for the finely divided body, 26...Top wall of the finely divided body, 27...Opening in the top wall of the drum for the finely divided body, 28...Suspension overflow pipe, 29...Insoluble Outlet pipe for residue, 3
0...Solvent supply pipe, 31...Sand discharge pipe,
32...Valve, 33...Finely divided body-containing solution discharge pipe, 34...Finely divided body-containing solution introduction pipe,
35... Lock valve, 36... Finely divided body-containing liquid supply pipe, 37... Raw material introduction inlet pipe for classification, 38... Valve, 39... Hydraulic line, 40
... Feeding device, 41 ... Lock valve, 42 ... Solution outlet pipe, 43 ... Oxidant inlet pipe, 44,
45, 46...Lock valve.

Claims (1)

[Claims] 1. Steel plate drums 6, 13 for finely divided bodies, each of which is interconnected in series from top to bottom;
It comprises a series coupling device assembly with steel plate drums 7, 14 for medium-sized division bodies and steel plate drums 8, 15 for coarse division bodies, the fine division body drum of the first device 1 preceding the assembly. leads to the coarse dividing body of the following second device 2, while the final device 2 of the assembly communicates with the settling tank 5, each device 1, 2 having an outlet pipe for discharging the coarse dividing body. In an installation for preparing non-ferrous metal solutions, wherein the first device 1 of the assembly has an inlet pipe 11 for introducing the raw material and is adapted to lead to a solvent conditioning unit 3'; The unit 3' consists of a leaching sand apparatus 3 having a hydraulic classifier 4 mounted above it and in communication with it, said hydraulic classifier 4 being connected to the assembly via a line 39. has one inlet pipe 37 which is connected to the coarse dividing drum 8 of the first device 1 of preparation of a non-ferrous metal solution, characterized in that it is connected to the coarse dividing drum 8 of the first device 1 through a target line, while the coarse dividing body drum 8 of the first device 1 has an oxidant inlet pipe 43; Equipment for. 2. Claims characterized in that the hydraulic line 39 communicates with the coarse-dividing body drum 8 in its upper part by means of a branch pipe 42 and with its lower part via a coarse-dividing discharge pipe 10 Equipment described in paragraph 1. 3. The hydraulic line 39 is equipped with a locking device 45 and a distribution device 40, both of which are installed in series in the area connected to the upper part of the coarse divider drum and connected to the coarse divider outlet pipe 10. The equipment according to claim 2, characterized in that: 4 Hydraulic line 39 is connected to coarse dividing outlet pipe 10
Claim 3 characterized in that it has a valve 38 installed downstream of the area connected to the
Equipment listed in section. 5. Claim 1, characterized in that the fine division zone of the hydraulic classifier 4 is further connected via a hydraulic line 36 to the coarse division body drum 15 of the final device 2 of the assembly. Equipment listed in section. 6 One locking device 35 is connected to the hydraulic classifier 4
6. The installation as claimed in claim 5, characterized in that it is installed in a hydraulic line (36) which connects the fine division zone of the assembly with the coarse division drum (15) of the final device (2) of the assembly. 7. The equipment according to any one of claims 1 to 6, characterized in that a fluidizing bed device is used as the brewing device 3. 8. Equipment according to claim 1, characterized in that the hydraulic classifier 4 is communicated with the brewing device 3 via a valve 32.