CN211896065U - Crude lithium product washing device - Google Patents
Crude lithium product washing device Download PDFInfo
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- CN211896065U CN211896065U CN202020284466.XU CN202020284466U CN211896065U CN 211896065 U CN211896065 U CN 211896065U CN 202020284466 U CN202020284466 U CN 202020284466U CN 211896065 U CN211896065 U CN 211896065U
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- salt solution
- byproduct salt
- crude lithium
- filter press
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Abstract
The utility model discloses a crude lithium product washing device, including byproduct salt solution groove, byproduct salt solution delivery pump, flowmeter, manometer, pressure filter, compressed air storage tank, pneumatic ooff valve, thick liquid wash bowl, hot-water tank and mother liquor groove. The utility model discloses use the washing system that lithium carbonate production by-product salt solution and pressure filter combined together in the aspect of the washing of lithium carbonate trade crude lithium product for the first time, realize by-product salt solution cycle recycle, can not introduce new impurity, can not cause crude lithium product to dissolve and lead to the productivity to descend, and the washing effect is showing, invest in for a short time.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field specifically is a crude lithium product washing device.
Background
Along with the continuous change of the lithium carbonate market demand, the requirement of customers on the quality of lithium carbonate products is more and more strict, and the improvement of the product quality is particularly important for enterprises producing lithium carbonate products. Because the crude lithium product is difficult to wash and control, the fluctuation of the content of soluble impurities in the final product is large, the washing effect is not good, and the quality and the yield of the final product of a lithium carbonate production enterprise are always influenced. The traditional crude lithium product washing process has the disadvantages of large water consumption and high lithium ion dissolution rate, the subsequent equipment utilization rate is reduced due to low solid-liquid ratio, the equipment energy consumption is increased under the same capacity, the control difficulty is high, and the soluble impurity content in the final product fluctuates greatly.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the technical problem who exists more than, provide a crude lithium product washing device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a crude lithium product washing device comprises a byproduct salt solution tank, a byproduct salt solution delivery pump, a flowmeter, a pressure gauge, a pressure filter, a compressed air storage tank, a pneumatic switch valve and a slurry washing tank, wherein the byproduct salt solution in the byproduct salt solution tank is delivered to the pressure filter filled with crude lithium through the byproduct salt solution delivery pump; the compressed air storage tank blows out mother liquor carried in the crude lithium in the filter press through air pressure and discharges the mother liquor to the slurry washing tank; the flowmeter is arranged on an outlet pipeline of the byproduct salt solution conveying pump and is used for metering the amount of the byproduct salt solution conveyed to the filter press; the pressure gauge is arranged on a pipeline before the byproduct salt solution enters the filter press and used for observing the pressure condition in the cavity of the filter press when the byproduct salt solution is conveyed, and the pressure gauge is in linkage relation with the byproduct salt solution conveying pump; the pneumatic switch valve is arranged on a pipeline before byproduct salt solution enters the filter press and is interlocked with the flowmeter and the byproduct salt solution delivery pump;
further, the pressure value set by the pressure gauge is 0.52 MPa.
Further, the model of the filter press is XAZGF120-1250 UK.
Further, the device also comprises a hot water tank, wherein a steam coil is arranged in the hot water tank, and hot water with the temperature of 85-90 ℃ is provided for the by-product salt solution tank through a delivery pump.
And further, the lithium carbonate filter press also comprises a mother liquor tank, wherein the mother liquor tank collects the crude lithium carbonate back salt solution in the filter press and conveys the salt solution to a salt field through a mother liquor tank pump.
The utility model discloses use the washing system that lithium carbonate production by-product salt solution and pressure filter combined together in the aspect of the washing of lithium carbonate trade crude lithium product for the first time, realize by-product salt solution cycle recycle, can not introduce new impurity, can not cause crude lithium product to dissolve and lead to the productivity to descend, and the washing effect is showing, invest in for a short time.
Drawings
FIG. 1: the utility model relates to a crude lithium product washing device's washing flow schematic diagram.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
The first embodiment is as follows:
as shown in fig. 1, a crude lithium product washing device comprises a byproduct salt solution tank, a byproduct salt solution delivery pump, a flowmeter, a pressure gauge, a XAZGF120-1250UK type filter press, a compressed air storage tank, a pneumatic switch valve, a slurry washing tank, a hot water tank and a mother liquor tank. The byproduct salt solution in the byproduct salt solution tank is conveyed to the filter press filled with crude lithium by the byproduct salt solution conveying pump; the compressed air storage tank blows out mother liquor carried in the crude lithium in the filter press through air pressure and discharges the mother liquor to the slurry washing tank; the manometer sets up the accessory substance salt solution advances on the pipeline before the pressure filter for when observing the transport accessory substance salt solution the pressure condition in the pressure filter cavity, the manometer with accessory substance salt solution delivery pump has the interlock relation, and pressure sets for 0.52MPa, prevents to damage filter cloth and filter plate because of the overpressure. The pneumatic switch valve is arranged on a pipeline before byproduct salt solution enters the filter press, is interlocked with the flowmeter and the byproduct salt solution delivery pump to improve automatic control, and improves efficiency and eliminates human interference factors generated during installation of hand valve operation. The flowmeter is arranged on an outlet pipeline of the byproduct salt solution conveying pump and used for metering the amount of the byproduct salt solution conveyed to the filter press, the flowmeter is in linkage relation with a pneumatic switch valve at an inlet of the filter press and the byproduct salt solution conveying pump, and when the conveying amount reaches a set value, the pump is automatically stopped and the valve is closed. A steam coil is arranged in the hot water tank, and hot water at 85-90 ℃ is provided for the by-product salt solution tank through a delivery pump. And the mother liquor tank collects the crude lithium carbonate back salt solution in the filter press and conveys the salt solution to a salt field through a mother liquor tank pump.
The following briefly introduces the working principle of the utility model:
the device is washed by two steps, including the internal displacement washing of the filter press and the washing of the slurry washing tank by adding water:
1. performing displacement washing in the filter press, conveying the salt solution in a byproduct salt solution tank to the filter press filled with crude lithium by using a byproduct salt solution conveying pump in a lateral mode, and controlling the flow, pressure and conveying time in the whole conveying process;
2. and adding water into the pulp washing tank for washing, blowing out the mother liquor carried in the washed crude lithium in a forced air side blowing mode, adding hot water into the pulp washing tank in advance, discharging the crude lithium blown by the forced air into the pulp washing tank, and controlling the liquid-solid ratio to be 3-3.5.
The device is characterized in that the mother liquor in the crude lithium of the filter press is fully replaced by utilizing the byproduct salt solution, and the washing effect can be achieved through one-time slurry washing without secondary slurry washing. The washing device has the advantages of small investment, high automation degree and good implementation effect, improves the technical level of the industrial crude lithium washing process and the equipment utilization rate, realizes the recycling of the byproduct salt solution, and reduces the energy consumption. Soluble impurities are fully dissolved and washed in the process of washing the crude lithium product, and new impurities are not introduced in the washing process, the main components of the crude lithium product are not damaged, and the yield of the main components of the crude lithium product is not reduced.
A set of comparative experimental data is given below, in particular as follows:
as can be seen from the data in the above table: after the device of the utility model is applied, the soluble impurities reach and exceed the index range required by the company, and the content of sodium and chlorine in the product is respectively reduced by more than 70.2 percent and 78 percent compared with the existing washing device; in addition, around new crude lithium product washing technology carry out the supporting upgrading transformation back of soda refining technology (use promptly the utility model discloses the device after), calcium magnesium ion content in the product has all reached battery level lithium carbonate rank requirement, and calcium and magnesium content decline respectively and reach 32.8% and 81.8% more than before supporting upgrading transformation (promptly current washing unit) product.
Finally, it should be noted that: the above embodiments are only used for illustrating the present invention and do not limit the technical solution described in the present invention; thus, while the present invention has been described in detail with reference to the various embodiments thereof, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and within the scope and spirit of the following claims.
Claims (5)
1. A crude lithium product washing device is characterized in that: the system comprises a byproduct salt solution tank, a byproduct salt solution delivery pump, a flowmeter, a pressure gauge, a filter press, a compressed air storage tank, a pneumatic switch valve and a slurry washing tank, wherein the byproduct salt solution in the byproduct salt solution tank is delivered to the filter press filled with crude lithium by the byproduct salt solution delivery pump; the compressed air storage tank blows out mother liquor carried in the crude lithium in the filter press through air pressure and discharges the mother liquor to the slurry washing tank; the flowmeter is arranged on an outlet pipeline of the byproduct salt solution conveying pump and is used for metering the amount of the byproduct salt solution conveyed to the filter press; the pressure gauge is arranged on a pipeline before the byproduct salt solution enters the filter press and used for observing the pressure condition in the cavity of the filter press when the byproduct salt solution is conveyed, and the pressure gauge is in linkage relation with the byproduct salt solution conveying pump; the pneumatic switch valve is arranged on a pipeline before byproduct salt solution enters the filter press and is interlocked with the flowmeter and the byproduct salt solution delivery pump.
2. The crude lithium product washing apparatus of claim 1, wherein: the pressure value set by the pressure gauge is 0.52 MPa.
3. The crude lithium product washing apparatus of claim 1, wherein: the model of the filter press is XAZGF120-1250 UK.
4. The crude lithium product washing apparatus of claim 1, wherein: the hot water tank is internally provided with a steam coil pipe, and hot water with the temperature of 85-90 ℃ is provided for the byproduct salt solution tank through a delivery pump.
5. The crude lithium product washing apparatus of claim 1, wherein: still include the mother liquor cistern, the mother liquor cistern is collected the salt solution behind the crude lithium carbonate in the pressure filter to carry to the salt pan through the mother liquor cistern pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020284466.XU CN211896065U (en) | 2020-03-10 | 2020-03-10 | Crude lithium product washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020284466.XU CN211896065U (en) | 2020-03-10 | 2020-03-10 | Crude lithium product washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211896065U true CN211896065U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020284466.XU Active CN211896065U (en) | 2020-03-10 | 2020-03-10 | Crude lithium product washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211896065U (en) |
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2020
- 2020-03-10 CN CN202020284466.XU patent/CN211896065U/en active Active
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