CN112301226A - Soil rubidium salt circulating leaching and content calculating method - Google Patents
Soil rubidium salt circulating leaching and content calculating method Download PDFInfo
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Abstract
The method for circularly leaching the soil rubidium salt provided by the invention solves the problem of low rubidium salt leaching rate in the previous leaching process, and the method for circularly leaching raw water is utilized, so that the concentration of the rubidium salt of the leachate is several times higher than that of the leachate at one time, the leachate is convenient to store, the consumption of chemical products in the subsequent purification process can be greatly increased, and the method is more environment-friendly.
Description
Technical Field
The invention relates to the technical field of metallurgy and mineral extraction, in particular to a method for circularly leaching and calculating soil rubidium salt.
Background
The content of rubidium in earth crust is 5.1 × 10-5—3.1×10-4And 16 positions respectively according to the abundance arrangement of elements. It has long been recognized that rubidium resources are primarily found in granite pegmatite, brines and potash deposits. People mainly develop and recover rubidium from granite pegmatite ore beds, and the main industrial mineral is lepidolite. The content of rubidium in lepidolite is about 3.75 percent, the content of rubidium in seawater is 0.12 g/ton, and a plurality of stratum water and salt lake brine also contain rubidium.
Rubidium is between potassium and cesium, is extremely active in nature, is a silver white waxy metal, is soft and light, can immediately lose the color of the metal when exposed to air, is severely oxidized by oxygen, and can cause spontaneous combustion of rubidium. The reaction is quite violent when exposed to water and even when exposed to ice at-100 ℃. Rubidium is more chemically reactive and more reactive than sodium and potassium.
Rubidium has irreplaceable use in many fields due to its unique physicochemical properties. With the development of high and new technology industries such as energy industry, atomic energy industry, bioengineering, aerospace industry, national defense industry and the like, rubidium metal and compounds thereof have great development in the traditional application fields such as biochemistry, catalysts, molecular biology, electronic devices, phototubes, special glass, medicines and the like in recent ten years; rubidium also shows strong vitality in new application fields such as magnetohydrodynamic power generation, thermionic conversion power generation, ion propulsion engines, and laser energy conversion electric energy devices.
In China, part of regional soil (mainly red soil) is rich in rubidium elements, has mining value, and is used as a newly-developed soil rubidium extraction industry, in a rubidium salt leaching process, due to the adsorbability of the soil, rubidium salt leached into liquid in industrial production cannot meet the expected requirement, and most of rubidium salt still remains in the soil, so that great waste of manpower, material resources and financial resources is caused, and the technical problem that a production enterprise cannot overcome is solved.
In view of the above, it is an urgent technical problem to be solved by those skilled in the art to provide a method for calculating the content of rubidium salt leached from soil.
Disclosure of Invention
In view of the above, the invention provides a method for circularly leaching soil rubidium salt and a method for calculating rubidium salt content, which solve the problems in the prior art, and the specific scheme is as follows:
a soil rubidium salt circulating leaching method comprises the following steps:
s1: 1-n leaching stations are arranged;
s2: the process raw water and the soil in each leaching station are in proportion A: b, soaking and mixing to obtain a soaking solution;
s3: adding process raw water into a 1 st leaching station, wherein the adding amount is C, and taking out leachate for 1 time after the leaching process is finished, wherein the taking amount of the leachate for 1 time is C;
s4: injecting the 1-time leachate obtained in the step S3 into a 2 nd leaching station, taking out the 2-time leachate after the leaching process is completed, wherein the taking amount of the 2-time leachate is C, repeating the operation until the nth leaching station is reached, obtaining the n-time leachate, and completing the first leaching;
s4: repeating the steps S3-S4 until the detected rubidium salt content in the immersion liquid in the first leaching station is lower than the set percentage of the initial immersion liquid content, and stopping circulation;
s5: abandoning the sample in the 1 st leaching station, lifting the original 2 nd leaching station to a new 1 st leaching station, sequentially advancing the 3 rd and later leaching stations, adding a leaching station behind the original nth leaching station as a new nth leaching station, and continuing the steps S2-S4, wherein the ratio of the soil of the infiltration liquid and the raw process water in the new nth leaching station is the same as the step S2.
Specifically, in the step S5, the samples in the 1 st and 2 nd leaching stations are discarded, the samples after the 3 rd leaching station are sequentially moved forward, two new leaching station samples are added to supplement the samples of the forward-moved n-1 th and nth leaching stations, and the ratio of the soil of the infiltration liquid in the new nth and nth-1 th leaching stations to the raw process water is the same as that in the step S2.
Specifically, the ratio of the process raw water to the soil in the step 2 is 1:1-1: 1.5.
Specifically, the set percentage in step S4 is 5%.
Specifically, n is 3, 4, 5, 6, 7, 8, 9 or 10.
Specifically, the collected leaching solution obtained from the nth station is classified and stored according to the leaching times in the collection process, and then the purification process is carried out.
In 1 st to n th stations, the calculation formula of the rubidium content in leachate in an intermediate sample of any intermediate station is as follows:
in the formula: m: leaching times n: sample numbering
c: adding amount b: residual amount of wetting liquid
d: the rubidium content e in the leachate: rubidium content in residual impregnating solution
A leaching calculation method for soil rubidium salt is characterized by comprising the following steps: in the 1 st to the n th stations, the calculation formula of the rubidium content in the infiltration in the intermediate sample of any intermediate station is as follows:
in the formula: m: leaching times n: sample numbering
c: adding amount b: residual amount of wetting liquid
d: the rubidium content e in the leachate: rubidium content in residual impregnating solution
The method for circularly leaching the soil rubidium salt provided by the invention solves the problem of low rubidium salt leaching rate in the previous leaching process, and the method for circularly leaching raw water is utilized, so that the concentration of the rubidium salt of the leachate is several times higher than that of the leachate at one time, the leachate is convenient to store, the consumption of chemical products in the subsequent purification process can be greatly increased, and the method is more environment-friendly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a method for circularly leaching soil rubidium salt and a method for calculating the rubidium salt content, which solve the problems in the prior art,
the rubidium salt circulating leaching scheme comprises the following steps:
s1: 1-n leaching stations are arranged;
s2: the process raw water and the soil in each leaching station are in proportion A: b, infiltrating and mixing to obtain an infiltration solution, wherein the standard of the obtained infiltration solution is that the soil is saturated at the lowest degree so as to obtain the slurry with the best effect.
S3: adding process raw water into a 1 st leaching station, wherein the adding amount is C, and taking out leachate for 1 time after the leaching process is finished, wherein the taking amount of the leachate for 1 time is C;
s4: injecting the 1-time leachate obtained in the step S3 into a 2 nd leaching station, taking out the 2-time leachate after the leaching process is completed, wherein the taking amount of the 2-time leachate is C, repeating the operation until the nth leaching station is reached, obtaining the n-time leachate, and completing the first leaching;
the ideal state is obtained in the steps 3 and 4, the water content can be reduced due to evaporation or leakage and the like in the actual process operation, and the process raw water can be supplemented to each leaching station in a proper amount according to the actual situation;
s4: repeating the steps S3-S4 until the detected rubidium salt content in the immersion liquid in the first leaching station is lower than the set percentage of the initial immersion liquid content, and stopping circulation;
s5: abandoning the sample in the 1 st leaching station, lifting the original 2 nd leaching station to a new 1 st leaching station, sequentially advancing the 3 rd and later leaching stations, adding a leaching station behind the original nth leaching station as a new nth leaching station, and continuing the steps S2-S4, wherein the ratio of the soil of the infiltration liquid and the raw process water in the new nth leaching station is the same as the step S2.
Specifically, in the step S5, the samples in the 1 st and 2 nd leaching stations are discarded, the samples after the 3 rd leaching station are sequentially moved forward, two new leaching station samples are added to supplement the samples of the forward-moved n-1 th and nth leaching stations, and the ratio of the soil of the infiltration liquid in the new nth and nth-1 th leaching stations to the raw process water is the same as that in the step S2.
Taking circulation three times, 10 stations as an example, the schematic of abandoning the first two leaching stations is shown in the following table for 1-3 times, the third ten the fifth ten
Sixteenth (4) } sixty (nine) (+ -) ((1))
Sixteenth (5) (+/-) - (1) (2) (3) (4)
< 6 th > time, < 6 th > nine (nine) < 1 > (2) (3) (4) (5) (6)
……
And (5) sequentially replacing two new samples for cycle production.
More specifically, the ratio A: B of the process raw water to the soil in the step 2 is 1:1-1: 1.5.
Specifically, the set percentage in step S4 is 5%.
Specifically, n is 3, 4, 5, 6, 7, 8, 9 or 10.
Specifically, the collected leachate obtained by the nth station is classified and stored according to leaching times during collection, and then is transferred to a purification process.
The invention also claims a leaching calculation method of soil rubidium salt,
this example is illustrated by taking as an example a sample of 10 leaching stations, with two samples being replaced simultaneously:
leaching for the first time: the soil is divided into the same mass parts, the water amount b is added into each part of soil to enable the soil to be completely wetted into 1 part of sample, the water amount c is added into each part of sample during leaching, the ideal state is assumed, water is not lost during the leaching process, and the water amount c can be taken out from each part of sample after the leaching is finished. And (3) taking 10 wet soil samples, numbering from 1 to 10, adding water c into the No. 1 sample to start leaching, taking out the leachate and sending the leachate into the No. 2 sample to leach after the No. 1 sample is leached, taking out the leachate and sending the leachate into the No. 3 sample to leach after the No. 2 sample is leached, and so on until the No. 10 sample is leached, taking out the leachate from the No. 10 sample, which is the first leaching.
Thus, the calculation formula of the rubidium salt content in the leaching solution of the nth sample is as follows:
in the formula (d)1nAnd identifying the rubidium salt content in the leaching solution of the nth sample at the first leaching.
Calculation formula of rubidium salt content in residual liquid b in sample n is
In the formula, e1nThis indicates the rubidium salt content in the sample residual liquid b of the nth time at the 1 st leaching.
And after the first leaching is finished, adding water c into the sample No. 1 again, repeating the first leaching process, starting the second leaching, and after the first leaching is finished, taking the leachate out of the sample No. 10. And after the second leaching is finished, adding water amount c into the No. 1 sample again, repeating the process, starting the third leaching, and taking out the leaching solution from the No. 10 sample after the third leaching is finished.
And after the third leaching is finished, abandoning the samples 1 and 2, adding new samples 11 and 12 later, keeping 10 parts of soil sample, adding water c into the sample 3, starting the fourth leaching, and finally taking out the leachate from the sample 12. And after the fourth leaching is finished, discarding the samples No. 3 and No. 4, adding new samples No. 13 and No. 14 later, keeping 10 parts of soil samples, adding water c into the sample No. 5, starting the fifth leaching, and finally taking out the leachate from the sample No. 14. The process is repeated later, discarding the first 2 samples in each leaching pass and adding 2 new samples later.
In this case, in the case of the mth leaching, the calculation formula of the rubidium salt content in the leaching solution of the nth sample is:
in the above formula, dmnDenotes the m-th leachingWhen the rubidium salt is extracted, the rubidium salt content in the leaching solution of the nth sample is obtained;
in the mth leaching, the calculation formula of the rubidium salt content in the residual liquid b of the nth sample is as follows:
in the formula, emnThe rubidium content in the residual liquid b of the sample No. n is shown when leaching for the mth time is carried out;
and when the new sample is leached for the mth time, the calculation formula of the rubidium salt content in the leachate of the new sample for the nth time is as follows:
in the formula (d)mnThe rubidium salt content in the leaching solution of the nth new sample is expressed when the leaching solution of the mth time is performed;
in the mth leaching, the calculation formula of the rubidium salt content in the residual liquid b in the nth new sample is as follows:
the soil object aimed by the leaching method is red clay, the soil in the method comprises but is not limited to red clay, and can also be loess or black soil and the like, the method is suitable for the soil with the rubidium content not lower than 50g/T, and the rubidium-containing soil with the rubidium content lower than the rubidium content loses the exploitation value.
While embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments, which are intended to be illustrative rather than limiting, and many modifications may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A soil rubidium salt circulating leaching method is characterized by comprising the following steps:
s1: 1-n leaching stations are arranged;
s2: the process raw water and the soil in each leaching station are in proportion A: b, soaking and mixing to obtain a soaking solution;
s3: adding process raw water into a 1 st leaching station, wherein the adding amount is C, and taking out leachate for 1 time after the leaching process is finished, wherein the taking amount of the leachate for 1 time is C;
s4: injecting the 1-time leachate obtained in the step S3 into a 2 nd leaching station, taking out the 2-time leachate after the leaching process is completed, wherein the taking amount of the 2-time leachate is C, repeating the operation until the nth leaching station is reached, obtaining the n-time leachate, and completing the first leaching;
s4: repeating the steps S3-S4 until the detected rubidium salt content in the immersion liquid in the first leaching station is lower than the set percentage of the initial immersion liquid content, and stopping circulation;
s5: abandoning the sample in the 1 st leaching station, lifting the original 2 nd leaching station to a new 1 st leaching station, sequentially advancing the 3 rd and later leaching stations, adding a leaching station behind the original nth leaching station as a new nth leaching station, and continuing the steps S2-S4, wherein the ratio of the soil of the infiltration liquid and the raw process water in the new nth leaching station is the same as the step S2.
2. The method for cyclical leaching of soil rubidium salt according to claim 1, characterized in that: in the step S5, the samples in the 1 st and the 2 nd leaching stations are discarded, the samples after the 3 rd leaching station are sequentially moved forward, two new leaching station samples are added to supplement the samples of the n-1 th and the nth leaching stations which are moved forward, and the ratio of the infiltration soil and the raw process water in the new nth and the n-1 th leaching stations is the same as that in the step S2.
3. A soil rubidium salt cycle leaching method according to any one of claims 1 or 2, characterized in that: the ratio of the process raw water to the soil in the step 2 is 1:1-1: 1.5.
4. A soil rubidium salt cycle leaching method according to any one of claims 1 or 2, characterized in that: the set percentage in step S4 is 5%.
5. A soil rubidium salt cycle leaching method according to any one of claims 1 or 2, characterized in that: and n is 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10.
6. A soil rubidium salt cycle leaching method according to any one of claims 1 or 2, characterized in that: and the collected leachate obtained at the nth station is classified and stored according to the leaching times in the collection process, and then is transferred to a purification process.
7. A method for calculating the leaching content of soil rubidium salt is characterized by comprising the following steps: and in the 1 st station to the n th stations, the calculation formula of the rubidium salt content in the leachate in the intermediate sample of any intermediate station is as follows:
in the formula: m: leaching times n: sample numbering
c: adding amount b: residual amount of wet rubidium salt solution
d: rubidium salt content e in leachate: the rubidium salt content of the residual impregnating solution.
8. A method for calculating the leaching content of soil rubidium salt is characterized by comprising the following steps: the rubidium salt content of the infiltration in the intermediate sample of any one of the stations from 1 st to n th is calculated as:
in the formula: m: leaching times n: sample numbering
c: adding amount b: residual amount of wet rubidium salt solution
d: rubidium salt content e in leachate: the rubidium salt content of the residual impregnating solution.
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