CN217626336U

CN217626336U - Conveying equipment for producing lithium hydroxide

Info

Publication number: CN217626336U
Application number: CN202122803802.4U
Authority: CN
Inventors: 李良彬; 李毅康; 黄小强; 陈玲; 符礼冬; 王春云; 简勤勇; 李海桃; 李海文; 何星; 蔡国红; 康逢源; 李倩; 付波; 肖伟; 黄霞
Original assignee: JIANGXI GANFENG LITHIUM CO Ltd
Current assignee: Jiangxi Ganfeng Lithium Industry Group Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-10-21
Anticipated expiration: 2031-11-16

Abstract

The utility model provides a conveying equipment for producing lithium hydroxide. A conveying equipment for producing lithium hydroxide includes buffer storage storehouse, gas holder, storehouse pump, pipeline, dust collector, dome valve, feed bin, trachea and feed valve, the buffer storage storehouse is located the top of storehouse pump, the buffer storage storehouse passes through the dome valve with the storehouse pump is connected, the gas holder with be equipped with the trachea between the storehouse pump, tracheal one end with gas tank connection, tracheal other end with the storehouse pump is connected, pipeline does the storehouse pump with connecting tube between the feed bin, the feed valve install in pipeline is last, the storehouse pump reaches the feed bin all with the dust collector links to each other with exhaust duct. The utility model provides a conveying equipment for producing lithium hydrate can avoid the foreign matter to sneak into and improve life, has both improved the site operation environment, reduces to lose and spills the waste, improves the technological level again, guarantees product quality.

Description

Conveying equipment for producing lithium hydroxide

Technical Field

The utility model relates to a lithium hydroxide production facility technical field especially relates to a conveying equipment for producing lithium hydroxide.

Background

Lithium hydroxide monohydrate is white crystalline powder, can be dissolved in water and is slightly soluble in organic solvents such as alcohol, and is widely applied to the fields of batteries, chemical engineering, energy sources, metallurgy, ceramics, semiconductors and the like. In the field of batteries, the preparation method is mainly used for preparing the anode material of the lithium ion battery and can also be used as an additive of the electrolyte of the alkaline storage battery.

The main method for producing lithium hydroxide monohydrate at present takes spodumene as a raw material, and the lithium hydroxide monohydrate is obtained by the process steps of high-temperature calcination transformation, acidification roasting, freezing separation of sodium sulfate, evaporation, low-temperature recrystallization and the like; the production process uses conveying equipment such as air conveying and the like, adopts mechanical conveying modes such as screws, belts and the like to transfer, and has the disadvantages of multiple interfaces, multiple lap joints, large leakage, more on-site scattering and poor working environment. Meanwhile, the mechanical conveying is uncontrollable in introducing metal impurities and foreign matters, so that the requirements of the process on metal particles are not favorably met, and a pneumatic conveying system is adopted to replace a mechanical conveying device. The conveying process is completely closed, material leakage is avoided, meanwhile, ceramic linings are adopted for positions with high material flow rates such as valves and pipelines, foreign matters are prevented from being mixed, the service life is prolonged, the field operation environment is improved, the waste caused by scattering is reduced, the process level is improved, and the product quality is ensured.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a solve the technical problem of mechanical equipment area materials such as spiral, belt for producing the conveying equipment of lithium hydrate.

The utility model discloses a conveying equipment for producing lithium hydroxide, including buffer storage storehouse, gas holder, storehouse pump, pipeline, dust collector, calotte valve, feed bin, trachea and feed valve, the buffer storage storehouse is located the top of storehouse pump, the buffer storage storehouse passes through the calotte valve with the storehouse pump is connected, the gas holder with be equipped with the trachea between the storehouse pump, tracheal one end with gas tank connection, the tracheal other end with the storehouse pump is connected, pipeline does the storehouse pump with connecting tube between the feed bin, the feed valve install in pipeline is last, the storehouse pump reaches the feed bin all with the dust collector links to each other with exhaust duct.

Furthermore, the inner surfaces of the buffer bin, the gas storage tank, the storage bin and the dust collector are all provided with ECTFE coatings, and the conveying pipeline, the gas pipe and the exhaust pipeline are all provided with ceramic linings.

Further, the pneumatic element of the dome valve is made of stainless steel material, and the joint of the delivery pipe and the bolt are made of stainless steel material.

Further, the dome valve is an inflatable sealed dome valve.

Further, the bin pump is provided with a gas quantity control pipeline.

The utility model discloses a conveying equipment for producing lithium hydroxide through dense phase pump form, adopts the high solid gas to compare the form and carries, and solid gas is than being greater than 25, reduces the introduction of carbon dioxide, reduces the carbonate that contact air caused in the transport and increases. Meanwhile, a pneumatic conveying system is adopted to replace a traditional mechanical conveying device, the conveying process is completely closed, material leakage is avoided, meanwhile, ceramic linings are adopted for positions with high material flow rates such as valves and pipelines, foreign matters are prevented from being mixed, the service life is prolonged, the field operation environment is improved, the scattering waste is reduced, the process level is improved, and the product quality is ensured.

Drawings

FIG. 1 is a schematic structural view of a conveying apparatus for producing lithium hydroxide according to the present invention;

fig. 2 is a flow chart illustrating the operation of the sump pump of the transport apparatus for lithium hydroxide production shown in fig. 1.

Description of the reference numerals

The device comprises a buffer storage bin 1, an air storage tank 2, a bin pump 3, a conveying pipeline 4, a dust collector 5, a dome valve 6, a bin 7, an air pipe 8, a feeding valve 9, a level indicator 31, a pressurization valve 32, a conveying valve 33, an exhaust valve 34 and a fluidization valve 35.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Please refer to fig. 1, the utility model provides a conveying equipment for producing lithium hydroxide, including buffer bin 1, gas holder 2, bin pump 3, pipeline 4, dust collector 5, dome valve 6, feed bin 7, trachea 8, feed valve 9, buffer bin 1 locates the top of bin pump 3, buffer bin 1 pass through dome valve 6 with bin pump 3 is connected, gas holder 2 with be equipped with trachea 8 between the bin pump 3, trachea 8 one end with gas holder 2 connects, trachea 8's the other end with bin pump 3 connects, pipeline 4 is bin pump 3 with the connecting tube between the feed bin 7, feed valve 9 installs on pipeline 4, select to open or close when bin pump 3 carries a plurality of feed bins 7, reach the transportation of designateing, bin pump 3 and feed bin 7 all with dust collector 5 links to each other with exhaust duct.

Referring to fig. 2, in the operation of the equipment with material, in order to ensure smooth discharging, the cone angle of the bin pump is 50 degrees, and a fluidizing device is arranged at the outlet to improve the conveying efficiency. The working process of the single bin pump is as follows:

(1) When the control system detects that the buffer bin works normally and the material level exceeds the low material level and the system has a starting condition, starting the system;

(2) The inlet dome valve 6 is opened, the materials fall into the bin pump by self weight, the exhaust valve 34 is opened in the blanking process, and the bin pump exhausts to ensure smooth blanking;

(3) When the bin pump level meter 31 is triggered at a high level, the system closes the exhaust valve 34, and closes and seals the inlet dome valve 6 after a certain delay;

(4) The pressurizing valve 32 is opened, and the pressure in the pump begins to rise to the set value;

(5) Opening the fluidization valve 35 and the delivery valve 33, opening the corresponding accompanying pipe control valve according to the target bin, and enabling the materials to enter a delivery pipeline to be delivered;

(6) When the bottom material position is detected, after a period of time delay, the delivery valve 33 is closed, the exhaust valve 34 is opened, and the bin pump is decompressed to prepare for next delivery;

(7) The delivery valve 33 is opened until the pipeline pressure drops below 0.2 bar;

(8) When the bin pump pressure drops to a set value, the dome valve 6 is opened, ready for the next blanking cycle.

In this embodiment, when the system will take place the material and block up, can arouse conveying gas's pressure variation, control system can carry out pressure control according to the signal that detects at this moment, through opening in time, close the companion's pipe boosting gas, avoids blockking up. If the blockage occurs, the system can automatically close the outlet valve and the conveying gas, after the pressure in the pipeline is reduced to 2.0bar, the conveying gas is started, after a period of time delay or the system pressure is reduced to 0.2bar, the pipeline is indicated to have a passage, the system can automatically open a control valve of the conveying gas and convey the gas again, and if the pipeline is not dredged, the steps are repeated. After the valve is repeatedly opened and closed, the blockage can be cleared after the materials are continuously blown, and meanwhile, the manual blockage clearing device is arranged, so that manual blockage clearing can be carried out on the site of the bin pump by an operator.

Referring to fig. 1-2, in one embodiment, ECTFE coatings are disposed on the inner surfaces of the buffer storage bin, the air storage tank, the storage bin and the dust collector, and the conveying pipeline, the air pipe and the exhaust pipeline are lined with ceramic.

The friction between the material and the inner wall of the pipeline during the conveying process is one of the important ways to cause the impurities to be mixed. The integral wear-resistant ceramic ring is used as an inner lining wear-resistant layer, so that the wear-resistant ceramic ring is high in hardness, good in smoothness and resistant to scouring, and can avoid wear to the maximum extent, and meanwhile, the outer pipe is made of 304 materials, and the inner pipe is made of a ceramic ring made of 95% alumina ceramic. The pipeline has smooth inner wall, good sealing performance, wear resistance, corrosion resistance and high temperature resistance.

In one embodiment, the pneumatic components of the dome valve, the joints of the conveying pipeline and the bolts are all 304 stainless steel bodies, and fittings are forbidden from copper and forbidden from zinc so as to ensure that relevant impurities are not introduced into the materials.

In one embodiment, the dome valve is an inflatable sealed dome valve, and has the advantages of stable and reliable performance, simple maintenance and long service life. The dome valve is used for ensuring the stable and reliable operation of the whole system, solving the problem of abrasion of the valve on the pneumatic conveying system, automatically monitoring the sealing air pressure and having an alarm function to ensure good sealing, and ensuring that the inner sealing ring is sealed by high-temperature-resistant silicon rubber to ensure the tolerance of the material temperature.

In one embodiment, the silo pump is provided with a pressurizing, fluidizing and conveying equal-gas-volume control pipeline, so that the discharging, conveying and warehousing of materials are ensured to be in a controllable state.

The above embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A conveying apparatus for producing lithium hydroxide, characterized in that: including buffer storage storehouse, gas holder, storehouse pump, pipeline, dust collector, dome valve, feed bin, trachea and feed valve, the buffer storage storehouse is located the top of storehouse pump, the buffer storage storehouse passes through the dome valve with the storehouse pump is connected, the gas holder with be equipped with the trachea between the storehouse pump, tracheal one end with gas tank connection, tracheal other end with the storehouse pump is connected, pipeline does the storehouse pump with connecting tube between the feed bin, the feed valve install in pipeline is last, the storehouse pump reaches the feed bin all with the dust collector links to each other with exhaust duct.

2. The transport apparatus for producing lithium hydroxide according to claim 1, characterized in that: the inner surfaces of the buffer bin, the gas storage tank, the material bin and the dust collector are all provided with ECTFE coatings, and the conveying pipeline, the gas pipe and the exhaust pipeline are all provided with ceramic linings.

3. The transportation apparatus for producing lithium hydroxide according to claim 2, wherein: the pneumatic element of the dome valve is made of stainless steel material, and the joint and the bolt of the conveying pipeline are made of stainless steel material.

4. A transport apparatus for producing lithium hydroxide as claimed in claim 3, characterized in that: the dome valve is an inflatable sealed dome valve.

5. The transportation apparatus for producing lithium hydroxide according to claim 4, wherein: the bin pump is provided with a gas control pipeline.