CN115031519A - Production method and production device of copper sulfate monohydrate - Google Patents
Production method and production device of copper sulfate monohydrate Download PDFInfo
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- CN115031519A CN115031519A CN202210813980.1A CN202210813980A CN115031519A CN 115031519 A CN115031519 A CN 115031519A CN 202210813980 A CN202210813980 A CN 202210813980A CN 115031519 A CN115031519 A CN 115031519A
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- CYKLGTUKGYURDP-UHFFFAOYSA-L copper;hydrogen sulfate;hydroxide Chemical compound O.[Cu+2].[O-]S([O-])(=O)=O CYKLGTUKGYURDP-UHFFFAOYSA-L 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 230000018044 dehydration Effects 0.000 claims abstract description 47
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 47
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 claims abstract description 38
- 239000013078 crystal Substances 0.000 claims abstract description 27
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 238000007664 blowing Methods 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 239000000843 powder Substances 0.000 description 9
- 238000003860 storage Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003674 animal food additive Substances 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/30—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors
- F26B17/32—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors the movement being in a horizontal or slightly inclined plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a production method and a production device of copper sulfate monohydrate, which mainly comprise the following steps: setting the temperature of a rotary dehydration kiln, wherein a first section temperature control area, a second section temperature control area and a third section temperature control area are sequentially arranged on the kiln body from an inlet end to an outlet end, the temperature range of the first section temperature control area is 30-100 ℃, the temperature range of the second section temperature control area is 100-; the length of the second section of temperature control area is greater than that of the first section of temperature control area, the length of the second section of temperature control area is greater than that of the third section of temperature control area, copper sulfate pentahydrate crystals enter the kiln body from the inlet end of the kiln body and sequentially pass through the first section of temperature control area, the second section of temperature control area and the third section of temperature control area, and finally, copper sulfate monohydrate is discharged from the outlet end of the kiln body. The whole production line of this application is shorter, and equipment is simple and convenient, and the input is few, and the energy consumption is low, and production is well controlled, does not have the production of "waste water" in the production process simultaneously.
Description
Technical Field
The invention relates to the field of production of copper sulfate monohydrate, in particular to a production method and a production device of copper sulfate monohydrate.
Background
The copper sulfate produced in industry is crystal with five water, the appearance color is blue, and the chemical formula of the copper sulfate pentahydrate is CuSO4 & 5H 2O. Copper sulfate pentahydrate is a chemical raw material with wide application, and is used for manufacturing other copper salts in the chemical industry; the dye industry is used as copper complexing agents and catalysts; agriculturally, as fungicides; is used as feed additive in animal husbandry.
When the copper sulfate pentahydrate is used as a feed additive, the copper sulfate pentahydrate contains 5 crystal water, so that caking is easily generated due to high moisture content in the using process, the flowability is poor, and the using effect is greatly influenced. Meanwhile, a small amount of free sulfuric acid in the production process is brought in the finished product of the blue vitriol, so that the free sulfuric acid in the blue vitriol corrodes equipment in the process of producing the feed, and the stability of vitamins in the feed is influenced to cause the quality of the feed to be reduced, and the problems cause feed manufacturers to gradually eliminate the blue vitriol and change the blue vitriol into the copper sulfate monohydrate CuSO 4. H2O.
Compared with copper sulfate pentahydrate, the copper sulfate monohydrate has the following advantages:
1. the water content is low, the fluidity is good, the distribution in the feed is uniform, and the caking is not easy in the using and storing process;
2. compared with the crystal form of blue vitriol, the blue vitriol is powder, has fine granularity, is easy to produce and process, and the copper element in the prepared feed is easy to be digested and absorbed by animals;
3. because the feed does not contain free acid, the feed does not corrode equipment for producing the feed, and other components in the feed are not affected.
The above advantages make copper sulfate monohydrate more widely used in the feed industry than copper sulfate pentahydrate.
According to the published literature, the production method of copper sulfate monohydrate, which is the spray powder blowing method, is described in patent application No. CN96197996.8, and has the defects of large equipment investment, large occupied area, generation of 'waste water', poor production control and the like.
Therefore, there is a need for a flexible and simple method for producing copper sulfate monohydrate.
Disclosure of Invention
Based on the method, a method for producing copper sulfate monohydrate is provided. The method is flexible and simple.
A method for producing copper sulfate monohydrate, comprising:
setting the temperature of a rotary dehydration kiln, wherein the rotary dehydration kiln comprises a cylindrical kiln body and a driving assembly for driving the kiln body to rotate, the kiln body is sequentially provided with a first section temperature control area, a second section temperature control area and a third section temperature control area from an inlet end to an outlet end, the temperature range of the first section temperature control area is 30-100 ℃, the temperature range of the second section temperature control area is 100-115 ℃, and the temperature range of the third section temperature control area is 115-70 ℃;
the length of the second section of temperature control area is greater than that of the first section of temperature control area, and the length of the second section of temperature control area is greater than that of the third section of temperature control area,
the blue vitriol crystal enters the kiln body from the inlet end of the kiln body and passes through the first section temperature control area, the second section temperature control area and the third section temperature control area in sequence, and then the outlet end of the kiln body discharges the blue vitriol crystal. Specifically, it may be discharged to a mechanical conveyor with forced air cooling and finally to a storage bucket.
The production principle is as follows: the copper sulfate pentahydrate crystal can lose four crystal waters at the temperature of 110 ℃ to form copper sulfate monohydrate powder.
The method of the application adopts the sectional temperature control mode of the rotary dehydration kiln to produce the copper sulfate monohydrate, so that the whole production line is short, the equipment is simple and convenient, the investment is low, the energy consumption is low, the production is well controlled, and no waste water is generated in the production process.
In one embodiment, the length of the first temperature control region is: length of the second temperature control region: the length of the third section of the temperature control area is 1:2: 1.
In one embodiment, the outer surface of the kiln body is provided with heating elements and the inner wall of the kiln body is provided with spiral guide plates running from the inlet end to the outlet end.
In one embodiment, the kiln body and the spiral guide plate are made of a sulfuric acid corrosion resistant material.
In one embodiment, a feeding container is arranged on one side of the kiln body, a feeding valve is arranged at the lower end of the feeding container and is connected with a feeding pipe, and the copper sulfate pentahydrate crystals enter the kiln body through the feeding pipe.
In one embodiment, a set of blowing type cooling mechanical conveying device is arranged below the outer side of the outlet end of the kiln body, and a material receiving container is arranged behind the blowing type cooling mechanical conveying device.
In one embodiment, the opening degree of the feeding valve, the rotating speed of the rotary dehydration kiln, the temperature of the first section temperature control area, the temperature of the second section temperature control area and the temperature of the third section temperature control area are adjusted according to the detection result of the copper sulfate monohydrate discharged from the kiln body.
In one embodiment, the rotation speed of the rotary dehydration kiln is 0.1-0.5 r/min.
A production device of copper sulfate monohydrate comprises a rotary dehydration kiln, wherein the rotary dehydration kiln comprises a cylindrical kiln body and a driving component for driving the kiln body to rotate, the outer surface of the kiln body is provided with a heating element, the inner wall of the kiln body is provided with a spiral guide plate which is connected from the inlet end to the outlet end, the rotary dehydration kiln is sequentially provided with a first section of temperature control area, a second section of temperature control area and a third section of temperature control area from the inlet end to the outlet end, the length of the second section of temperature control area is greater than that of the first section of temperature control area, the length of the second section temperature control area is greater than that of the third section temperature control area, the temperature range of the first section temperature control area is 30-100 ℃, the temperature range of the second section temperature control area is 100-115 ℃, the temperature range of the third section temperature control area is 115-70 ℃, and the rotating speed of the rotary dehydration kiln is 0.1-0.5 r/min;
the kiln comprises a kiln body and is characterized in that a feeding container is arranged on one side of the kiln body, a feeding valve is arranged at the lower end of the feeding container and connected with a feeding pipe, copper sulfate pentahydrate crystals enter the kiln body through the feeding pipe, a set of blowing type cooling mechanical conveying device is arranged below the outer side of the outlet end of the kiln body, and a material receiving container is arranged behind the device.
In one embodiment, the length of the first temperature control region is: length of the second temperature control region: the length of the third section of the temperature control area is 1:2: 1.
Drawings
Fig. 1 is a schematic view of a production apparatus for copper sulfate monohydrate according to an embodiment of the present application.
Wherein:
110. rotating a dehydration kiln; 111. an inlet end; 112. an outlet end; 120. a feed vessel; 130. a feed valve; 140. a feed pipe; 150. a spiral guide plate; 160. a blower-cooled mechanical conveyor; 170. a receiving container.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, an embodiment of the present application provides a method for producing copper sulfate monohydrate, which includes:
the temperature of the rotary dehydrating kiln 110 is set, and the rotary dehydrating kiln 110 includes a cylindrical kiln body and a driving assembly for driving the kiln body to rotate. The kiln body is sequentially provided with a first section of temperature control area, a second section of temperature control area and a third section of temperature control area from an inlet end 111 to an outlet end 112. The length of the second section of temperature control area is greater than that of the first section of temperature control area, and the length of the second section of temperature control area is greater than that of the third section of temperature control area.
The temperature of the first temperature control region is 30-100 deg.C, such as 40 deg.C, 50 deg.C, 60 deg.C, 80 deg.C, and 100 deg.C. The temperature range of the second temperature control region is 100-115 ℃, for example, 100 ℃, 105 ℃ and 115 ℃. The temperature of the temperature control region in the third stage is 115-70 deg.C, such as 70 deg.C, 80 deg.C, 90 deg.C, and 100 deg.C.
The copper sulfate pentahydrate crystals enter the rotary dewatering kiln 110 from the inlet end 111 of the rotary dewatering kiln 110, sequentially pass through the first section temperature control area, the second section temperature control area and the third section temperature control area, and finally the copper sulfate monohydrate powder is discharged from the outlet end 112 of the rotary dewatering kiln 110 to a mechanical conveying device 160 with blast cooling and finally to a storage bucket 170.
Wherein, the first section temperature control area is a preheating area, the second section temperature control area is a dehydration area, and the third section temperature control area is a cooling area.
In one embodiment, a set of blower-type cooling mechanical conveyors 160 is provided below the outside of the exit end 112 of the kiln body, followed by a receiving receptacle 170. The receiving container 170 may be a storage bucket. The blower cooling mechanism 160 includes a conveying mechanism and a blower disposed above the conveying mechanism.
The copper sulfate monohydrate powder with the temperature of about 70 ℃ produced from the outlet end 112 of the kiln body enters the inlet of a mechanical conveying device with air blowing cooling, and in the conveying process, the copper sulfate monohydrate with the temperature of about 70 ℃ is further cooled to about 30 ℃ through air blown out by an air blower on the conveying device, then enters a material receiving container 170 at the back, and is measured and packaged to form a finished product.
In one embodiment, the length of the first section of the temperature control region is: length of the second temperature control region: the length of the third section of temperature control area is 1:2: 1.
For example, the length of the first temperature control region is 1000mm, the length of the second temperature control region is 2000mm, and the length of the third temperature control region is 1000 mm. Specifically, the overall diameter of the rotary dehydrating kiln 110 may be set according to actual needs. For example 400 mm.
In one embodiment, the rotary dehydration kiln 110 comprises a cylindrical kiln body, the outer surface of which is provided with heating members, and the inner wall of which is provided with a spiral guide plate 150 extending from the inlet end to the outlet end. Specifically, the heating member may be a heating wire or the like type heating member. The electric heating wire is arranged on the outer wall of the kiln body, and is wrapped by heat preservation cotton and then wrapped by sheet iron.
Specifically, the height and pitch of the spiral guide plate 150 may be set according to the actual size of the kiln body. For example, the spiral guide 150 is 100mm high and has a pitch of 100 mm.
In one embodiment, the kiln body and the spiral guide 150 are made of a material that is resistant to corrosion by sulfuric acid. For example, it may be made of acid-resistant stainless steel.
In one embodiment, a feeding container 120 is arranged on one side of the kiln body, a feeding valve 130 is arranged at the lower end of the feeding container 120, the feeding valve 130 is connected with a feeding pipe 140, and the copper sulfate pentahydrate crystals enter the kiln body through the feeding pipe 140.
The feed container 120 may be a charging bucket. Specifically, the crystalline copper sulfate pentahydrate raw material can be placed in the feeding container 120, the feeding valve 130 is opened, and the copper sulfate pentahydrate crystals in the feeding container 120 can enter the kiln body through the feeding pipe 140. By controlling the feed valve 130, the feed rate can be controlled.
In one embodiment, the opening degree of the feed valve 130, the rotation speed of the rotary dehydration kiln 110, the temperature of the first section temperature control region, the temperature of the second section temperature control region, and the temperature of the third section temperature control region are adjusted according to the detection result of the copper sulfate monohydrate powder discharged from the kiln body.
In one embodiment, the rotary kiln 110 rotates at a speed of 0.1 to 0.5 rpm. For example, it may be 0.1 rpm, 0.5 rpm.
As shown in fig. 1, an embodiment of the present application further provides a device for producing copper sulfate monohydrate, the device includes a rotary dehydration kiln 110, the rotary dehydration kiln 110 includes a cylindrical kiln body, a heating member is disposed on an outer surface of the kiln body, a spiral guide plate 150 is disposed on an inner wall of the kiln body and is connected to an outlet end from an inlet end, a first section of temperature control area, a second section of temperature control area and a third section of temperature control area are sequentially disposed in the rotary dehydration kiln 110 from the inlet end 111 to the outlet end 112, a length of the second section of temperature control area is greater than a length of the first section of temperature control area, a length of the second section of temperature control area is greater than a length of the third section of temperature control area, a temperature range of the first section of temperature control area is 30-100 ℃, a temperature range of the second section of temperature control area is 100-, the rotation speed of the rotary dehydrating kiln 110 is 0.1 to 0.5 rpm.
The electrical heating rotary dehydration kiln 110 that this application adopted, owing to there is the screw-tupe baffle on the drum wall of the inside, along with the rotation that the kiln body does not stop in process of production, the blue vitriol material of the inside promotes down at the screw-tupe baffle, in the temperature region of difference, advance on one side and turn on one side ceaselessly, the material is heated evenly like this, obtain abundant heating dehydration and generate the copper sulfate monohydrate, because whole dehydration process is in the developments, therefore the difficult caking of the copper sulfate monohydrate that generates, the fluidity is good.
The electric heating rotary dehydration kiln 110 adopted by the application controls production through different temperature areas due to the adoption of three-section heating, so that energy is fully utilized, unnecessary energy consumption is reduced, energy is effectively saved, and the production cost is reduced.
Compared with the production method of copper sulfate monohydrate, which is published and reported, the method has the advantages of short production flow, continuous operation, high labor productivity and no generation of 'wastewater' in the production process.
The above-described process for producing copper sulfate monohydrate of the present application is described in detail below by way of several specific examples.
Example one
Step one, turning on a switch of a rotating device of a rotary dehydration kiln 110, controlling the rotating speed to be 0.3 r/min, simultaneously starting a temperature control device for heating, and heating to the required working temperature, wherein the temperature of a first section temperature control area is 80 ℃, the temperature of a second section temperature control area is 80 ℃, and the temperature of a third section temperature control area is 70 ℃;
turning on a switch of the blowing type cooling mechanical conveying device 160;
step three, putting 1000kg of blue vitriol crystals into a charging barrel;
step four, opening a feed valve 130 below the charging bucket to allow the blue vitriol crystals to slowly flow into the rotary dehydration kiln 110;
step five, when a period of time passes, the blue copperas crystals in the rotary dehydration kiln 110 are dehydrated under the action of temperature to generate copper sulfate monohydrate, the copper sulfate monohydrate enters the inlet of a blowing type cooling mechanical conveying device 160 below the outer side of the rotary dehydration kiln 110 along a spiral guide plate 150, and in the conveying process, air blown out by a blower on the device is further cooled and then enters a storage barrel 170;
and step six, metering and packaging the cooled copper sulfate monohydrate obtained in the step five into a finished product.
Example two
Step one, opening a switch of a rotating device of a rotary dehydration kiln 110, controlling the rotating speed to be 0.3 r/min, simultaneously starting a temperature control device for heating, and heating to the required working temperature, wherein the temperature of a first section temperature control area is 100 ℃, the temperature of a second section temperature control area is 115 ℃, and the temperature of a third section temperature control area is 70 ℃;
step two, turning on the switch of the blowing type cooling mechanical conveyer 160
Step three, putting 1000kg of blue vitriol crystals into a charging bucket;
step four, opening a feed valve 130 below the charging bucket, and allowing the blue vitriol crystals to slowly flow into the rotary dehydration kiln 110;
step five, when a period of time passes, the blue copperas crystal in the rotary dehydration kiln 110 is dehydrated under the action of temperature to generate copper sulfate monohydrate, the copper sulfate monohydrate enters the inlet of a blowing type cooling mechanical conveying device 160 below the outer side of the rotary dehydration kiln 110 along a spiral guide plate 150, and in the conveying process, air blown out by a blower on the device is further cooled and then enters a storage barrel 170;
and step six, metering and packaging the cooled copper sulfate monohydrate obtained in the step five into a finished product.
EXAMPLE III
Step one, turning on a switch of a rotating device of a rotary dehydration kiln 110, controlling the rotating speed to be 0.3 r/min, simultaneously starting a temperature control device for heating, and heating to the required working temperature, wherein the temperature of a first section temperature control area is 100 ℃, the temperature of a second section temperature control area is 150 ℃, and the temperature of a third section temperature control area is 70 ℃;
step two, turning on the switch of the blower cooling mechanical conveyer 160
Step three, putting 1000kg of blue vitriol crystals into a charging bucket;
step four, opening a feed valve 130 below the charging bucket to allow the monohydrate copper sulfate powder to slowly flow into the rotary dehydration kiln 110;
step five, when a period of time passes, the blue copperas crystal in the rotary dehydration kiln 110 is dehydrated under the action of temperature to generate copper sulfate monohydrate, the copper sulfate monohydrate enters the inlet of a blowing type cooling mechanical conveying device 160 below the outer side of the rotary dehydration kiln 110 along a spiral guide plate 150, and in the conveying process, air blown out by a blower on the device is further cooled and then enters a storage barrel 170;
and step six, metering and packaging the cooled copper sulfate monohydrate powder obtained in the step five into a finished product.
The properties of the copper sulfate monohydrate powder produced in the above three examples were specifically analyzed below.
Sampling the copper sulfate monohydrate produced in the three embodiments, wherein the sample in the first embodiment is A; the sample of example two is B; the sample of example three was C.
The main indicators of copper sulfate monohydrate content of the three samples were analyzed in comparison. The test is carried out according to the requirement of the test method of the copper content in the national standard GB 34459-2017.
The results were 34.2% A, 35.9% B, 36.3% C.
The copper content in the national standard GB26046-2010 is required to be more than or equal to 35.7%.
The copper content of the sample A of the first example was slightly lower than the copper content of the sample A, and the copper content of the sample A did not reach the copper content, because the temperature of the dehydration section of the rotary dehydration kiln 110 was only 80 ℃, and the lower dehydration temperature caused incomplete dehydration.
The copper content of the sample B of example two meets the standard requirements because the temperature of the dewatering section in the rotary dewatering kiln 110 is 115 deg.C, at which point the copper sulfate pentahydrate crystals are more thoroughly dewatered in this region. So that the copper content can meet the requirement.
The main index copper content of the sample C in the third embodiment also reaches the national standard, the temperature of the dehydration section of the rotary dehydration kiln 110 is 150 ℃, the temperature is higher, so that the dehydration of the blue vitriol is more thorough, part of the blue vitriol loses crystal water and becomes white anhydrous vitriol, the copper content is higher, but the energy consumption is higher.
Comparing the above analysis, the second embodiment is a better choice.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A method for producing copper sulfate monohydrate, comprising:
setting the temperature of a rotary dehydration kiln, wherein the rotary dehydration kiln comprises a cylindrical kiln body and a driving component for driving the kiln body to rotate, the kiln body is sequentially provided with a first section of temperature control area, a second section of temperature control area and a third section of temperature control area from an inlet end to an outlet end, the temperature range of the first section of temperature control area is 30-100 ℃, the temperature range of the second section of temperature control area is 100 plus 115 ℃, and the temperature range of the third section of temperature control area is 115-70 ℃;
the length of the second section of temperature control area is greater than that of the first section of temperature control area, and the length of the second section of temperature control area is greater than that of the third section of temperature control area,
the blue vitriol crystal enters the kiln body from the inlet end of the kiln body and sequentially passes through the first section temperature control area, the second section temperature control area and the third section temperature control area, and finally, the outlet end of the kiln body discharges the blue vitriol crystal.
2. The method for producing copper sulfate monohydrate as claimed in claim 1, wherein the length of the first temperature control zone: length of the second temperature control region: the length of the third section of temperature control area is 1:2: 1.
3. The method of claim 1, wherein the exterior surface of the kiln body is provided with heating elements and the interior wall of the kiln body is provided with spiral guide plates extending from the inlet end to the outlet end.
4. The method of claim 3, wherein the kiln body and the spiral guide plate are made of a material resistant to corrosion by sulfuric acid.
5. The method for producing copper sulfate monohydrate as claimed in claim 3, wherein a feeding container is arranged on one side of the kiln body, a feeding valve is arranged at the lower end of the feeding container, the feeding valve is connected with a feeding pipe, and the copper sulfate pentahydrate crystals enter the kiln body through the feeding pipe.
6. The method for producing the copper sulfate monohydrate as claimed in claim 3, wherein a set of blowing type cooling mechanical conveying device is arranged below the outer side of the outlet end of the kiln body, and a material receiving container is arranged behind the blowing type cooling mechanical conveying device.
7. The method for producing the copper sulfate monohydrate as claimed in claim 5, wherein the opening degree of the feed valve, the rotation speed of the rotary dehydration kiln, the temperature of the first section temperature control area, the temperature of the second section temperature control area and the temperature of the third section temperature control area are adjusted according to the detection result of the copper sulfate monohydrate discharged from the kiln body.
8. The method for producing copper sulfate monohydrate according to claim 1, wherein the rotation speed of the rotary dehydration kiln is 0.1-0.5 r/min.
9. A production device of copper sulfate monohydrate is characterized by comprising a rotary dehydration kiln, wherein the rotary dehydration kiln comprises a cylindrical kiln body and a driving component for driving the kiln body to rotate, the outer surface of the kiln body is provided with a heating element, the inner wall of the kiln body is provided with a spiral guide plate which is connected from the inlet end to the outlet end, the rotary dehydration kiln is sequentially provided with a first section temperature control area, a second section temperature control area and a third section temperature control area from the inlet end to the outlet end, the length of the second section temperature control area is greater than that of the first section temperature control area, the length of the second section of temperature control area is greater than that of the third section of temperature control area, the temperature range of the first section of temperature control area is 30-100 ℃, the temperature range of the second section of temperature control area is 100-;
the kiln comprises a kiln body and is characterized in that a feeding container is arranged on one side of the kiln body, a feeding valve is arranged at the lower end of the feeding container and connected with a feeding pipe, copper sulfate pentahydrate crystals enter the kiln body through the feeding pipe, a set of blowing type cooling mechanical conveying device is arranged below the outer side of the outlet end of the kiln body, and a material receiving container is arranged behind the device.
10. The apparatus for producing copper sulfate monohydrate of claim 9, wherein the length of the first temperature control zone is: length of the second temperature control region: the length of the third section of temperature control area is 1:2: 1.
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