CN107287454A - It is a kind of to obtain the method that Rare Earth Mine leaching process adsorbs parameter again - Google Patents
It is a kind of to obtain the method that Rare Earth Mine leaching process adsorbs parameter again Download PDFInfo
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Abstract
The present invention relates to Extraction of rare eart recovery technology field, a kind of method that acquisition Rare Earth Mine leaching process adsorbs parameter again is disclosed, including mother liquor rare earth ion, mother liquor leach the influence that the multinomial factor of Rare Earth Mine of agent concentration, mother liquor total amount, mother liquor pH value, foreign ion, saturated extent of adsorption and different rate of decay is adsorbed again to rare earth ion.The present invention can instruct the practical application of ion adsorption type rare earth ore in production by determining influence result that above-mentioned parameters adsorb again to rare earth ion, rare earth ion is avoided to occur to adsorb again as far as possible, it is significant to saving production cost and high efficiency extraction rare earth.
Description
Technical field
The present invention relates to Extraction of rare eart recovery technology field, and in particular to one kind obtains ion, and absorbent-type Rare Earth Mine is leached again
The method that process adsorbs parameter again.
Background technology
Ion-adsorpting local immersion-extraction method for mining rare-earth minerals makes dew adopt the resource utilization that leaching process exists for many years
Low, environmental disruption is solved with seriously polluted, the problems such as labor intensity is big, productivity ratio is low, production cost is high of digging up mine, but
When large area is exploited using in-situ leach mining method, some stopes have occurred that mother liquor (leachate) concentration is low, raw ore is leached
Rate is low, rare-earth yield is low and the problems such as high reagent consumption, influences the all-round popularization of this method.
The general preservation of ion type rareearth is in residual deposit, and rare earth ion is mainly adsorbed on kaolinite, feldspar, mica
Deng the surface of clay mineral.Adsorbed rare earth ion is running into the more active cation (Na of chemical property+,K+,H+,N H+4
Deng) can be desorbed by its exchange, electrolyte is such as made with ammonium sulfate, ammonium ion exchanges desorption rare earth ion, when leaching electrolyte solution
In contain enough ammonium ions when, rare earth ion can then be desorbed by ammonium ion, into mother liquor.But when the mother liquor for containing rare earth ion
When being run in ore body porous dehiscence gap, the ammonium ion in mother liquor is less and less because constantly exchanging desorption rare earth ion, until be zero,
At this moment rare earth ion is adsorbed in the clay mineral surface in ore body in turn because breaking the unsaturated negative electrical charge that key occurs, and makes dilute in mother liquor
Native content is more and more low, adsorption phenomena again occurs.The generation of above-mentioned phenomenon can be successfully managed, each Rare Earth Mine is directly concerned
Productivity effect.Due to lacking the system research to rare earth ion adsorption mechanism again at present, in Rare-earth Mine Extraction of rare earth ion
During lack theoretical direction.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome of the prior art lack to rare earth ion adsorption machine again
The technological deficiency of the maximization leaching mining of Rare Earth Mine is studied and then instructed to reason.
Therefore, obtaining the method that Rare Earth Mine leaching process adsorbs parameter again the invention provides a kind of, comprise the following steps：
S1. the completely decomposed mine tailing sample ore of several pieces phase homogenous quantities is taken, rare earth ion mother liquor and ion leaching agent is separately added into,
And control ph, mixing time 11~13 hours, obtain stirring liquid；
S2. each stirring liquid that the step S1 is obtained is filtered, obtains solid and filtrate；
S3. the obtained solids of the step S2 are eluted with leacheate, obtains eluate；
S4. eluate described in the filtrate described in the step S2 and the step S3 is mixed, obtains mixed liquor, and
Determine each mixed liquor Rare Earth Ion concentration；
S5. the relation for leaching parameter and leaching rare earth ion amount is formed.
Alternatively, the step of rare earth ion mother liquor and ion leaching agent are added described in the step S1 includes：
By liquid-solid ratio 1：1~6：1 adds rare earth ion mother liquor in the mine tailing sample ore respectively, forms suspension；
Respectively ion leaching agent is added in each suspension；Wherein,
The ion leaching agent is selected from, but not limited to, the aqueous solution of ammonium salt；The concentration of the ion leaching agent is 0.50g/L
~15.00g/L；
The concentration of the rare earth ion mother liquor is 5.05 × 10-4Mol/L~5.05 × 10-3mol/L；
The volume ratio of each rare earth ion mother liquor and the ion leaching agent is 3~5：1；
The grade of the mine tailing sample ore, rate of decay are not all the same.
Alternatively, the liquid-solid ratio is 1：1、2：1、3：1、4：1、5：1 and 6：1, the concentration of the rare earth ion mother liquor is
5.05×10-4Mol/L~5.05 × 10-3Mol/L, the concentration of the ion leaching agent is 0.50g/L~15.00g/L.
Alternatively, the solid-to-liquid ratio is 1：1~6：1, the concentration of the rare earth ion mother liquor is 5.05 × 10-4mol/L、
1.01×10-3mol/L、2.02×10-3mol/L、3.03×10-3mol/L、4.04×10-3mol/L、5.05×10-3mol/L,
The concentration of the ion leaching agent is 0.50g/L~15.00g/L.
Alternatively, the solid-to-liquid ratio is 1：1~6：1, the concentration of the rare earth ion mother liquor is 5.05 × 10-4Mol/L~
5.05×10-3Mol/L, the concentration of the ion leaching agent is 0.50g/L, 1.00g/L, 2.50g/L, 5.00g/L, 10.00g/
L、15.00g/L。
Alternatively, the solid-to-liquid ratio is 1：1~6：1, the concentration of the rare earth ion mother liquor is 5.05 × 10-4Mol/L~
5.05×10-3Mol/L, the concentration of the ion leaching agent is 0.50g/L~15.00g/L, and pH is 1.5~8.5.
Alternatively, the volume ratio of the rare earth ion mother liquor and the ion leaching agent is 4：1.
Alternatively, aluminium composition is different in the mine tailing sample ore；In mine tailing sample ore aluminium ion concentration be 0.00g/L~
1.00g/L。
Alternatively, the rate of decay of the Rare Earth Mine is different；Weathering rate is 80.15% and 40.09%.
Alternatively, the saturated extent of adsorption of the size fractionated completely decomposed mine tailing is 37.10 × 10-2Mg/g~71.66 × 10-2mg/g。
Alternatively, in the step S3, the leacheate is water, and the leacheate consumption is 100ml, point 2-3 elution.
Technical solution of the present invention, has the following advantages that：
The method that a kind of acquisition Rare Earth Mine leaching process provided in an embodiment of the present invention adsorbs parameter again, including mother liquor are leached
Agent concentration, mother liquor rare earth ion, mother liquor total amount, mother liquor pH value, foreign ion, saturated extent of adsorption, the rare earth of different rate of decay
The influence that the multinomial factor of ore deposit is adsorbed again to rare earth, by experiment, has deep understanding to the factor that influence Rare Earth Mine is adsorbed again, obtains
To the rule and critical value for adsorbing generation again, rare earth mining, which is designed and produced, has directive significance, while can be directed to
Property propose that some solve or avoid again the method and strategy of absorption problem, be regime of agent and technological process that Rare Earth Mine is extracted
Condition etc. provides theoretical foundation.
Inventor by creative work find this method can accurate and effective acquisition parameter, and method is simple.
Embodiment
The present invention can be embodied in many different forms, and should not be construed as limited to embodiment set forth herein.
Opposite there is provided these embodiments so that the disclosure will be thorough and complete, and the design of the present invention will be fully conveyed to
Those skilled in the art, the present invention will only be defined by the appended claims.
Following embodiment is in actual mechanical process, and each embodiment is repeated 3 times, and mother liquor rare earth ion concentration takes it to put down
Average.
Embodiment 1
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. 50g/ parts of completely decomposed mine tailing sample ore is taken, by liquid-solid ratio 1：1 toward concentration is added in mine tailing sample ore is 5.05 ×
10-4Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the ammonium sulfate of addition 0.72g/L in the suspension of step S1 formation, suspension and sulfuric acid that S1 is obtained
The volume ratio of ammonium is 5：1, control ph 2~3, moderate-speed mixer 11 hours obtains stirring liquid；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted in three times with 100ml water, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. 50g/ parts of completely decomposed mine tailing sample ore is taken, liquid-solid ratio takes 2 respectively：1、3：1、4：1、5：1 and 6：1, repeat above-mentioned
Step S1 to step S5, respectively obtains the rare earth ion concentration of mixed liquor；
The relation for forming liquid-solid ratio and leaching rare earth ion amount is as follows：
With the increase of liquid-solid ratio, adsorbance gradually increases Rare Earth Mine again, is afterwards 4 in liquid-solid ratio：Slightly weaken when 1,
Finally in liquid-solid ratio 5：Balance is reached after 1.It can thus be appreciated that the increase of mother liquor total amount promotes Rare Earth Mine and adsorbed again, in practical application
It is contemplated that reducing the generation that rare earth ion is adsorbed again by reducing liquid-solid ratio.
Embodiment 2
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. 50g/ parts of completely decomposed mine tailing sample ore is taken, by liquid-solid ratio 1：1 toward concentration is added in mine tailing sample ore is 5.05 ×
10-4Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the ammonium sulfate of addition 0.72g/L in the suspension of step S1 formation, suspension and sulfuric acid that S1 is obtained
The volume ratio of ammonium is 3：1, control ph 2~3, moderate-speed mixer 12 hours obtains stirring liquid；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted twice with 100ml moisture, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. 50g/ parts of completely decomposed mine tailing sample ore is taken, rare earth ion mother liquid concentration is respectively 5.05 × 10-4mol/L、1.01
×10-3mol/L、2.02×10-3mol/L、3.03×10-3mol/L、4.04×10-3mol/L、5.05×10-3Mol/L, is repeated
Above-mentioned steps S1 to step S5, respectively obtains the rare earth ion concentration of mixed liquor；
Form rare earth ion mother liquor and the relation of leaching rare earth ion amount is as follows：
With the rise of rare earth ion mother liquid concentration, adsorbance gradually increases Rare Earth Mine again, 3.03 × 10-3Mol/L with
After reach balance, the adsorbance again of Rare Earth Mine reach its saturation again adsorbance more than 90%.It follows that rare earth ion mother liquor
The rise of concentration promotes Rare Earth Mine and adsorbed again, can contemplate by reducing rare earth ion mother liquid concentration to drop in practical application
The generation that low rare earth ion is adsorbed again.
Embodiment 3
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. 50g/ parts of completely decomposed mine tailing sample ore is taken, by liquid-solid ratio 1：1 toward concentration is added in mine tailing sample ore is 5.05 ×
10-4Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the ammonium sulfate of addition 0.50g/L in the suspension of step S1 formation, suspension and sulfuric acid that S1 is obtained
The volume ratio of ammonium is 4：1, control ph 2~3, moderate-speed mixer 13 hours obtains stirring liquid；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted in three times with 100ml water, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. take 50g/ parts of completely decomposed mine tailing sample ore, ammonium sulfate concentrations be respectively 0.50g/L, 1.00g/L, 2.50g/L,
5.00g/L, 8.00g/L, 10.00g/L, 15.00g/L, repeat the above steps S1 to step S5, respectively obtains the rare earth of mixed liquor
Ion concentration；
Form ammonium sulfate and the relation of leaching rare earth ion amount is as follows：
As ammonium sulfate concentrations are raised, adsorbance is gradually reduced Rare Earth Mine again, dilute when ammonium sulfate concentrations are in 0.50g/L
Tu Kuang adsorbance again reached its saturation again adsorbance more than 80%, ammonium sulfate concentrations reach that Rare Earth Mine is adsorbed again after 8g/L
Amount reaches balance.Rare Earth Mine is inhibited to adsorb again it can thus be appreciated that leaching agent concentration rise, while ammonium sulfate concentrations are should in 8g/L
Under the conditions of critical point, should under the conditions of reduce again absorption and control ammonium sulfate concentrations in more than 8g/L, and ammonium sulfate concentrations are in 8g/L
For optimal parameter.
Embodiment 4
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. 50g/ parts of completely decomposed mine tailing sample ore is taken, by liquid-solid ratio 1：1 toward concentration is added in mine tailing sample ore is 5.05 ×
10-4Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the potassium sulfate of addition 0.5g/L in the suspension of step S1 formation, suspension and sulfuric acid that S1 is obtained
The volume ratio of ammonium is 5：1, control ph 1.5, moderate-speed mixer 12 hours obtains stirring liquid；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted in three times with 100ml water, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. take 50g/ parts of completely decomposed mine tailing sample ore, control ph is respectively 1.5,2.5,3.5,4.5,5.5,6.5,
7.5th, 8.5, repeat the above steps S1 to step S5, respectively obtains the rare earth ion concentration of mixed liquor；
The relation for forming mother liquor pH value and leaching rare earth ion amount is as follows：
As mother liquor pH value is raised, Rare Earth Mine quickly reduces after adsorbance gradually increases again, mother liquor pH value between 4~6 again
Adsorbance peak and the interval again adsorbance change it is smaller.It can thus be appreciated that mother liquor pH value is when less than 4~6, increase meeting
Rare Earth Mine is promoted to adsorb again；When pH value is more than 4~6, suppression Rare Earth Mine is conducive to adsorb again.Parameter point chooses pH value 4~6
Between, it can preferably reduce Rare Earth Mine and adsorb again.
Embodiment 5
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. it is 37.10 × 10 to take saturated extent of adsorption-2The completely decomposed mine tailing sample ore of mg/g 50g/ parts, by liquid-solid ratio 1：1 is past
It is 5.05 × 10 that concentration is added in mine tailing sample ore-4Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the ammonium sulfate of addition 0.5g/L in the suspension of step S1 formation, suspension and sulfuric acid that S1 is obtained
The volume ratio of ammonium is 5：1, control ph 2~3, moderate-speed mixer 12 hours obtains stirring liquid；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted in three times with 100ml water, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. take the completely decomposed mine tailing sample ore of 50g/ parts of size fractionated, the saturated extent of adsorption of completely decomposed mine tailing for 42.06 ×
10-2mg/g、52.12×10-2mg/g、67.28×10-2mg/g、71.66×10-2Mg/g, the S1 that repeats the above steps to step S5,
Respectively obtain the rare earth ion concentration of mixed liquor；
The completely decomposed mine tailing for forming size fractionated and the relation for leaching rare earth ion amount are as follows：
With the increase of the saturation adsorbance again of size fractionated Rare Earth Mine, adsorbance gradually increases Rare Earth Mine again.Thus may be used
Know Rare Earth Mine saturation again adsorbance increase Rare Earth Mine can be promoted to adsorb again, because Rare Earth Mine saturation again adsorbance with rare earth ion
Gradually leach and gradually increase, adsorption capacity strengthens again so Rare Earth Mine is with process Rare Earth Mine is leached.
Embodiment 6
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. the mine tailing sample ore of 50g/ parts that weathering rate is 80.15% is taken, by liquid-solid ratio 1：1 is dense toward adding in mine tailing sample ore
Spend for 5.05 × 10-4Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the ammonium sulfate of addition 0.5g/L in the suspension of step S1 formation, suspension and sulfuric acid that S1 is obtained
The volume ratio of ammonium is 5：1, control ph 2~3, moderate-speed mixer 12 hours obtains stirring liquid；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted in three times with 100ml water, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. the mine tailing sample ore that weathering rate is 40.09% and the raw ore sample ore that weathering rate is 80.15% and 40.09% are taken, weight
Multiple above-mentioned steps S1 to step S5, obtains the rare earth ion concentration of mixed liquor；
Form different rate of decay mine tailings and the relation of leaching rare earth ion amount is as follows：
Rare-earth original ore is with the increase of weathering rate, and adsorbance is gradually reduced rare earth ion again；Rare-earth tailing is with weathering rate
Increase, adsorbance gradually increases rare earth ion again.It can thus be appreciated that rare-earth original ore increases Rare Earth Mine energy of adsorption again with weathering rate
Power reduces, and rare-earth tailing increases Rare Earth Mine adsorption capacity enhancing again with weathering rate.
Embodiment 7
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. 50g/ parts of completely decomposed mine tailing sample ore is taken, by liquid-solid ratio 1：1 toward concentration is added in mine tailing sample ore is 5.05 ×
10-4Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the ammonium sulfate of addition 0.5g/L in the suspension of step S1 formation, suspension and sulfuric acid that S1 is obtained
The volume ratio of ammonium is 5：1, control ph 2~3, moderate-speed mixer 12 hours obtains stirring liquid, do not contain in the stirring liquid aluminium from
Son；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted in three times with 100ml water, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. the mother liquor that aluminium ion concentration is respectively 0.10g/L, 0.20g/L, 0.4g/L, 0.60g/L, 1.00g/L is taken, weight
Multiple above-mentioned steps S1 to step S5, obtains the rare earth ion concentration of mixed liquor；
Form foreign ion aluminium ion and the relation of leaching rare earth ion amount is as follows：
With the rise of mother liquor aluminium ion concentration, adsorbance gradually increases Rare Earth Mine again, is to mother liquor aluminium ion concentration
Adsorbance reaches balance again after 0.50g/L, but the amplification scope of adsorbance again is smaller.It can thus be appreciated that the exchange capacity such as aluminium ion
The concentration impurity ion rise small compared with rare earth ion promotes Rare Earth Mine to adsorb again, therefore, is being applied to it is contemplated that as far as possible
The aluminum ions content of mother liquor is reduced to reduce the generation that rare earth ion is adsorbed again.
Comparative example 1
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. liquid-solid ratio 1 is pressed：1 is 5.05 × 10 to 50g/ parts of completely decomposed mine tailing sample ore addition concentration-4Mol/L rare earth
The mixed liquor of ion mother liquor and 0.72g/L ammonium sulfate；Control ph 2~3, moderate-speed mixer 11 hours obtains stirring liquid；
S2. the stirring liquid that step S1 is obtained is filtered, obtains solid and filtrate；
S3. the obtained solid after step S2 is filtered is eluted in three times with 100ml water, obtains eluate；
S4. the eluate obtained the obtained filtrates of step S2 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S5. 50g/ parts of completely decomposed mine tailing sample ore is taken, liquid-solid ratio takes 2 respectively：1、3：1、4：1、5：1 and 6：1, repeat above-mentioned
Step S1 to step S4, respectively obtains the rare earth ion concentration of mixed liquor.
Result of the test is drawn, with the increase of liquid-solid ratio, and Rare Earth Mine is adsorbed in irregular change in oscillation again, is not balanced
Point rises overally or downward trend.
Comparative example 2
The method that a kind of acquisition Rare Earth Mine leaching process of the present embodiment adsorbs parameter again, comprises the following steps：
S1. 50g/ parts of completely decomposed mine tailing sample ore is taken, by liquid-solid ratio 1：1 toward concentration is added in mine tailing sample ore is 6.05 ×
10-3Mol/L rare earth ion mother liquor, forms suspension；
S2. respectively toward the ammonium sulfate of addition 17g/L in the suspension of step S1 formation, suspension and ammonium sulfate that S1 is obtained
Volume ratio be 5：1, control ph 2~3, moderate-speed mixer 11 hours obtains stirring liquid；
S3. the stirring liquid that step S2 is obtained is filtered, obtains solid and filtrate；
S4. the obtained solid after step S3 is filtered is eluted in three times with 100ml water, obtains eluate；
S5. the eluate obtained the obtained filtrates of step S3 and step S4 is mixed, and obtains mixed liquor, and determine mixed liquor
Rare earth ion concentration；
S6. 50g/ parts of completely decomposed mine tailing sample ore is taken, liquid-solid ratio takes 2 respectively：1、3：1、4：1、5：1 and 6：1, repeat above-mentioned
Step S1 to step S5, respectively obtains the rare earth ion concentration of mixed liquor；
Result of the test is drawn, with the increase of liquid-solid ratio, and Rare Earth Mine is adsorbed in irregular change in oscillation again, is not balanced
Point rises overally or downward trend.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Change the protection domain still in the invention.
Claims (10)
1. a kind of obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that comprises the following steps：
S1. the completely decomposed mine tailing sample ore of several pieces phase homogenous quantities is taken, rare earth ion mother liquor and ion leaching agent is separately added into, and control
PH value processed, mixing time 11~13 hours obtains stirring liquid；
S2. each stirring liquid that the step S1 is obtained is filtered, obtains solid and filtrate；
S3. the obtained solids of the step S2 are eluted with leacheate, obtains eluate；
S4. eluate described in the filtrate described in the step S2 and the step S3 is mixed, obtains mixed liquor, and determine
Each mixed liquor Rare Earth Ion concentration；
S5. the relation for leaching parameter and leaching rare earth ion amount is formed.
2. according to claim 1 obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that the step
The step of adding rare earth ion mother liquor and ion leaching agent described in rapid S1 includes：
By liquid-solid ratio 1：1~6：1 adds rare earth ion mother liquor in the mine tailing sample ore respectively, forms suspension；
Respectively ion leaching agent is added in each suspension；Wherein,
The ion leaching agent is selected from, but not limited to, the aqueous solution of ammonium salt, the concentration of the ion leaching agent for 0.50g/L~
15.00g/L；
The concentration of the rare earth ion mother liquor is 5.05 × 10-4Mol/L~5.05 × 10-3mol/L；
The volume ratio of each rare earth ion mother liquor and the ion leaching agent is 3~5：1；
The grade of the mine tailing sample ore, rate of decay are not all the same.
3. according to claim 2 obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that the liquid
Gu than being 1：1、2：1、3：1、4：1、5：1 and 6：1, the concentration of the rare earth ion mother liquor is 5.05 × 10-4Mol/L~5.05 ×
10-3Mol/L, the concentration of the ion leaching agent is 0.50g/L~15.00g/L.
4. according to claim 2 obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that described solid
Liquor ratio is 1：1~6：1, the concentration of the rare earth ion mother liquor is 5.05 × 10-4mol/L、1.01×10-3mol/L、2.02×
10-3mol/L、3.03×10-3mol/L、
4.04×10-3mol/L、5.05×10-3Mol/L, the concentration of the ion leaching agent is 0.50g/L~15.00g/L.
5. according to claim 2 obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that described solid
Liquor ratio is 1：1~6：1, the concentration of the rare earth ion mother liquor is 5.05 × 10-4Mol/L~5.05 × 10-3Mol/L, it is described from
The concentration of sub- leaching agent be 0.50g/L,
1.00g/L、2.50g/L、5.00g/L、10.00g/L、15.00g/L。
6. according to claim 2 obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that described solid
Liquor ratio is 1：1~6：1, the concentration of the rare earth ion mother liquor is 5.05 × 10-4Mol/L~5.05 × 10-3Mol/L, it is described from
The concentration of sub- leaching agent is 0.50g/L~15.00g/L, and pH is 1.5~8.5.
7. according to claim 2 obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that described dilute
Tu Kuang weathering rate is 80.15% or 40.09%.
8. according to claim 2 obtain the Rare Earth Mine leaching process method of adsorbing parameter again, it is characterised in that it is described not
Saturated extent of adsorption with grade completely decomposed mine tailing is 37.10 × 10-2Mg/g~71.66 × 10-2mg/g。
9. according to claim 2 obtain the method that Rare Earth Mine leaching process adsorbs parameter again, it is characterised in that described mixed
It is 0.00g/L~1.00g/L to close aluminium ion concentration in liquid.
10. the method that the acquisition Rare Earth Mine leaching process according to claim any one of 1-9 adsorbs parameter again, its feature exists
In in the step S3, the leacheate is water, and the leacheate consumption is 100ml, point 2-3 elution.
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| CN111180017A (en) * | 2020-01-09 | 2020-05-19 | 江西理工大学 | Method for calculating dosage of ionic rare earth mineral leaching agent |
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