CN101748447B - Method for producing electrolytic manganese metal - Google Patents
Method for producing electrolytic manganese metal Download PDFInfo
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- CN101748447B CN101748447B CN2009102202755A CN200910220275A CN101748447B CN 101748447 B CN101748447 B CN 101748447B CN 2009102202755 A CN2009102202755 A CN 2009102202755A CN 200910220275 A CN200910220275 A CN 200910220275A CN 101748447 B CN101748447 B CN 101748447B
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Abstract
The invention relates to a method for producing electrolytic manganese metal. The method has the following characteristics that: silicomanganese slag replacing manganese carbonate ore is leached in multiple stages, that is, in the first stage of leaching, anolyte enough for the reaction of materials is poured into a combination tank, concentrated sulfuric acid and the silicomanganese slag are then added, in the second stage and each of the rest stages of leaching, the filtrate produced by filter pressing in the previous stage of leaching is first poured into the combination tank, the anolyte is then replenished, the concentrated sulfuric acid and the silicomanganese slag are then added, so that Mn 2 plus in the slag can be extracted, the produced manganese sulfate enters solution, and after the manganese concentration required by catalysis is reached, processes, such as deironization, desiliconization, neutralization, purification and electrolysis, are sequentially carried out, so that acceptable electrolytic manganese metal is obtained. Since the silicomanganese slag is adopted to replace the manganese carbonate ore in the production of the electrolytic manganese metal, the problem of unstable ore resources is solved, the production cost is greatly reduced, competitiveness is enhanced, moreover, the waste slag produced in the production of silicomanganese can be easily treated, and thereby the recycling economy is formed.
Description
Technical field
The invention belongs to the electrolytic metal Mn technical field, is raw material with the manganese waste slag etc. of containing that produces in the silicomanganese smelting process particularly, and through acidleach, iron removal by oxidation and deep purifying obtain purified manganese salt solution, produce the method for electrolytic metal Mns again through operations such as electrolysis.
Background technology
CN2004780043137.X, the method for electrolytic manganese " from the ferroalloy production waste obtain " literary composition disclose and produced the waste material that obtains in the waste gas that fire grate goes out with the washing iron alloy is raw material is produced electrolytic metal Mns through operations such as sulphating, leaching, purification, electrolysis method.It is meant will produce in the iron alloy production the raw material dust contain the manganese raw material through what drip washing was collected, this raw material still is breeze in fact, replaces the manganese ore powder to leach, and this kind dust material remains manganese resource, and can be recovered to utilization again in the agglomerate in the iron alloy production fully, have higher-value.
The present stage production of my company's electrolytic metal Mn is that raw material carries out through operations such as leaching, neutralization, filtration, purification, electrolysis with manganous carbonate breeze, manganese oxide powder, the vitriol oil and anolyte.Its main raw material is a manganese carbonate ore, but because my company is in the north, there is distance on the resource ground that is rich in manganese carbonate ore with south on the geographical position, so ore deposit per ton will increase by 500 yuan of trucking costs on the cost producing, my company compares with southern electrolytic manganese factory and lacks competitiveness on profit margin in this regard, also there are unfavorable factors such as the unstable and grade of mineral resources is low in the manganese carbonate ore of buying from south simultaneously, manganese carbonate ore has been tending towards in south by the state of local electrolytic manganese factory monopolization, so my company is very difficult, can not guarantee the stability and the permanence of electrolytic manganese production in buying.
My company manganese smeltery will produce a large amount of waste residues---silicon manganese slag, its major ingredient Mn:8-17%, Fe:2.76%, Fe in producing silicomanganese product process
2+: 1.06%, CaO:19.04%, MgO:4.95%, SiO2:39.1%, Mn2+10.5%, this waste residue of Mn4+:5.12%. does not have recycle value in electric furnace production, all gratuitously sent in the past.After we begin electrolytic manganese production, expect that silicon manganese slag also contains manganese, silicon manganese slag can replace manganese carbonate ore to leach as main raw material fully and produce electrolytic manganese through a large amount of experiment showed.
Summary of the invention
To use the higher and mineral resources problem of unstable of manganese carbonate ore production cost in order solving, to propose following technical scheme.
A kind of method of producing electrolytic metal Mn, it comprises operations such as leaching, neutralization, filtration, purification and electrolysis, its special character is to replace the multistage leaching of manganese carbonate ore with silicon manganese slag, be that first step leaching is to inject the anolyte that is enough to make material reaction earlier in the chemical combination jar, add the vitriol oil and silicon manganese slag then, the second stage and later leachings at different levels all are the filtrate of injecting in the chemical combination jar earlier after upper level leaches press filtration, the restock anolyte, add the vitriol oil and silicon manganese slag then, so that extract the Mn in the slag
2+, make it to become manganous sulfate and enter in the solution, reach the manganese concentration of electrolysis requirement.
When leaching was leached for two-stage, its step was as follows.
The step that one-level leaches is:
Inject the anolyte that is enough to make material reaction in the chemical combination jar, the composition of assay anolyte adds sulfuric acid and silicon manganese slag then, and its add-on is calculated as follows according to the analytical results of anolyte composition:
The ∑ Mn content of the silicomanganese quantity of slag=lifting manganese concentration * anolyte volume/1000/ silicon manganese slag ... (1)
The sulfuric acid add-on=(silicomanganese quantity of slag * acid ore deposit ratio-anolyte volume * anolyte contains H
+/ 1000)/the sulfuric acid grade ... (2)
Wherein, promote Mn in the solution
2+Concentration is 8-12g/L, sour ore deposit than (total acid content: the silicomanganese quantity of slag) be 0.65-0.85, silicon manganese slag grade ∑ Mn:8-17%, sulfuric acid concentration 92.5%-98%, anolyte contains H
+Record by assay.
Feeding intake finishes afterwards stirred 1-3 hour, did not heat, and relied on the natural reaction liberated heat, then sampling analysis: Mn
2+, H
+, Fe
2+Content is as Mn
2+Content is approaching or reach calculating target manganese concentration requirement, prepares press filtration.
The step that secondary leaches is:
The one-level leach liquor passes through the pressure filter press filtration to purification pot, pour into again in the chemical combination jar, replenish anolyte and open the stirring of chemical combination jar after 10 minutes, sampling analysis manganese, ammonium sulfate, sulfuric acid content go out the silicon manganese slag and the sulfuric acid amount that should add according to analytical results by (1), (2) formula budgetary estimate.Promote Mn in the solution in the formula
2+Concentration is 8-12g/L, and sour ore deposit is 0.65-0.85 than (total acid content: total the silicomanganese quantity of slag), silicon manganese slag grade ∑ Mn:8-17%, and sulfuric acid concentration 92.5%-98%, anolyte contains H
+Record by assay.
Add sulfuric acid earlier, add silicon manganese slag then, add Polyacrylamide at last, the add-on of Polyacrylamide=liquor capacity * 0.01g/L.
Feeding intake finishes afterwards stirred 1-3 hour, did not heat, and relied on the natural reaction liberated heat, then sampling analysis Mn
2+, H
+, Fe
2+Content calculates the Manganse Dioxide breeze that will drop into according to ferrous content, and its add-on=1.5* records and contains Mn in ferrous amount * material liquid volume/Manganse Dioxide breeze
4+Content.Dioxide ore for manganese major ingredient ∑ Mn45-48%, Mn
4+: 38-45%, ∑ Fe:7-9%, CaO+MgO:11-14% reacted after 1 hour, as ferrous reaching≤0.001g/L, can carry out neutralization operation.
When the silicon manganese slag manganese content is low, need carry out multistage leaching, contain the manganese requirement with what satisfy the electrolysis qualifying liquid, concrete steps and above-mentioned steps are similar.
The neutral step is:
Manganese slag (∑ Mn:24.68%) is adjusted pH value to 4.5-5.0 in dropping into earlier, adds ammoniacal liquor again and continues neutralization, and the pH value of slip in the repeated detection jar reaches till 6.2～6.8 (the test paper measurements) the slip pH value in the N-process.
Reaction equation is:
MnSiO
3+H
2SO
4＝MnSO
4+H
2SiO
3
MnO
2+2FeSO
4+2H
2SO
4＝Fe
2(SO
4)
3+MnSO
4+2H
2O
Fe
2(SO
4)
3+ 6NH
3H
2O=2Fe (OH)
3↓+3 (NH
4)
2SO
4(ammoniacal liquor neutralization)
Stir 0.5---1 hour (scope) after adding ammoniacal liquor, sampling analysis manganese, ammonium sulfate, all iron content, pH value, if iron is qualified entirely≤and 0.001g/l, PH:6.2～6.8 (test paper measurement), can prepare the press filtration operation.
Cleaning section
The press filtration heavy metal content requirement that generally touched the mark in the feed liquid of back that finishes as the content requirement that do not touch the mark, is pressed 50-100g/m according to material liquid volume again
3SDD and 50-100ml/m
3(NH
4)
2The amount of S adds.Scavenging agent (SDD (purity requirement 〉=92%, free alkali≤0.5%, pH value 7.5-11.5) and (NH
4)
2S (requires ammonium sulfide content (in sulphur) 〉=8.0%, iron level≤0.0010%, Na
+Content≤0.030%), slowly join in the feed liquid behind the dilute with water; Stir 20～30 minutes, stop stirring sampling analysis: Co, Ni, Zn content after static 20 minutes, Co, Ni, Zn have one≤0.002g/l, it can be carried out press filtration behind all the other two≤0.001g/l, filtrate is squeezed in the high-order liquid pool static.Qualifying liquid manganese concentration: 30～38g/l; Ammonium sulfate concentrations: 75～125g/l; PH value: 6.2-6.8 (test paper records); ∑ Fe≤0.001g/L; Co, Ni, Zn have one≤0.002g/l, all the other two≤0.001g/l.
Obtain qualified electrolytic metal Mn through electrolysis.
The advantage that the present invention had:
1) owing to adopt silicon manganese slag to replace manganese carbonate ore to produce electrolytic manganese, solves the mineral resources problem of unstable, reduced the production cost of electrolytic manganese significantly, improved competitiveness of product.
2) 80% of the used manganese ore of electrolytic manganese production by the silicon manganese slag replacement, has reduced the consumption of manganese resource.Optimizing resources is utilized, and forms recycling economy.
3) solved the reluctant environmental issue of waste residue that produces in the silicomanganese production, forming manganese is the product industrial chain.
4) consumption of ton manganese scavenging agent is few, well below electrolytic manganese industry consumption indicators.
Description of drawings
Accompanying drawing is the process flow sheet of embodiment 1.
Embodiment
Embodiment 1
Method with silicon manganese slag replaces the multistage leaching of manganese carbonate ore to produce electrolytic metal Mn the steps include:
(1), beat anolyte and go into the chemical combination jar, volume is 120 cubic meters, opens the chemical combination jar and stirs after 10 minutes, sampling send the laboratory to analyze: manganese, ammonium sulfate, sulfuric acid content.Anolyte content Mn
2+: 14g/L, H
+: 35g/L, (NH
4)
2SO
4: 110g/L
(2), calculate the silicon manganese slag and the sulfuric acid amount that should add according to analytical results by (1), (2) formula.The input amount of silicon manganese slag is pressed Mn in the solution
2+Concentration promotes 8g/L and calculates, and sour ore deposit ratio is controlled at 0.65, silicon manganese slag grade ∑ Mn:8%, sulfuric acid concentration 98%.Once leach as calculated and drop into 12 tons of silicon manganese slags, 3.67 tons in sulfuric acid.
(3), to the chemical combination jar, add required as calculated sulfuric acid, require operator to note the vitriolic add-on this moment, and accurately, fast, the special messenger is responsible for keeping an eye on the acid amount that adds from the sulphur acid meter measuring tank.
(4), the notice personnel of feeding intake will leach required whole silicomanganese ground-slags and winch to second floor by ton bag or material handleless cup with overhead traveling crane, be transported to a jar mouth after utilizing the second floor platform scale to its weighing again, according to input amount it is dropped in the jar, want energy focal attention jar internal reaction situation this moment, want strict control feed rate in the reaction process, prevent to emit groove.Add 1 bag of silicon manganese slag every half an hour, about 1.4 tons.
(5), the back that finishes of feeding intake stirred 3 hours, (do not heat, rely on the natural reaction liberated heat), the express laboratory analysis is sent in sampling then: manganese, sulfuric acid, ferrous content, as Mn
2+Content is approaching or reach calculating target manganese concentration requirement (22g/L), prepares press filtration.
(6), by the pressure filter press filtration to purification pot, by pipe special filtrate is poured in the chemical combination jar once more again, replenish anolyte to 120 cubic meter.Open the chemical combination jar and stir after 10 minutes, sampling send the laboratory to analyze: manganese, ammonium sulfate, sulfuric acid content.At this moment anolyte content Mn
2+: 22g/L, H
+: 20g/L, (NH
4)
2SO
4: 110g/L.
(7), budgetary estimate goes out the silicon manganese slag and the sulfuric acid amount that should add according to analytical results.The input amount of silicon manganese slag is by containing Mn in the solution
2+Concentration promotes 8g/L and calculates, and sour ore deposit ratio is controlled at 0.65, silicon manganese slag grade ∑ Mn:8%, sulfuric acid concentration 98%.Secondary leaches and drops into 12 tons of silicon manganese slags, 3.67 tons in sulfuric acid as calculated.
(8), to the chemical combination jar, add required as calculated sulfuric acid, require operator to note the vitriolic add-on this moment, and accurately, fast, the special messenger is responsible for keeping an eye on the acid amount that adds from the sulphur acid meter measuring tank; Employed equipment has the sulphur acid meter measuring tank.
(9), the notice personnel of feeding intake will leach required whole silicomanganese ground-slags and winch to second floor by ton bag or material handleless cup with overhead traveling crane, be transported to a jar mouth after utilizing the second floor platform scale to its weighing again, according to input amount it is dropped in the jar, want energy focal attention jar internal reaction situation this moment, want strict control feed rate in the reaction process, prevent to emit groove.Add 1 bag of silicon manganese slag every half an hour, about 1.4 tons.The back adding Polyacrylamide 1.2Kg that finishes feeds intake.
(10), stirred 3 hours the feed intake back that finishes, (do not heat, rely on the natural reaction liberated heat) take a sample then and send the express laboratory analysis: manganese, sulfuric acid, ferrous content, calculate 1.5 tons of the Manganse Dioxide breezes that will drop into according to ferrous content, react after 1 hour, as ferrous reaching≤0.001g/L, can carry out neutralization operation.Manganese slag (∑ Mn:24.68%) is adjusted pH value to 4.5-5.0 in dropping into earlier, adds ammoniacal liquor again and continues neutralization, and the pH value of slip in the repeated detection jar in the N-process makes the slip pH value reach 6.2～6.8 test paper and measures.
(11), add behind the ammoniacal liquor and stirred 0.5 hour, sampling analysis: manganese, ammonium sulfate, all iron content, pH value, if full iron is qualified and other analytical element reach requirement after≤0.001g/l, PH:6.2～6.8 (test paper measurement), can open and slip valve at the bottom of the chemical combination jar, by chute slip is put in the Buffer Pool, prepared the press filtration operation.
(12), the press filtration back feed liquid heavy metal content requirement that generally touched the mark that finishes, as the content requirement that do not touch the mark, add a spot of scavenging agent (SDD (requiring 〉=92%, free alkali≤0.5%, pH value 7.5-11.5) and (NH according to feed liquid beavy metal impurity content again
4)
2S (requires ammonium sulfide content (in sulphur) 〉=8.0%, iron level≤0.0010%, Na
+Content≤0.030%), slowly join in the feed liquid behind the dilute with water; Stir 20～30 minutes, stop stirring after static 20 minutes sampling and send express laboratory analysis: Co, Ni, Zn content, Co, Ni, Zn have one≤0.002g/l, it can be carried out press filtration behind all the other two≤0.001g/l, filtrate is squeezed in the high-order liquid pool static.Qualifying liquid manganese concentration: 30～38g/l; Ammonium sulfate concentrations: 75～125g/l; PH value: 6.2-6.8 (test paper); ∑ Fe≤0.001g/L;
Co, Ni, Zn have one≤0.002g/l, all the other two≤0.001g/l).
(13), carry out electrolysis through potroom and obtain qualified electrolytic metal Mn.
Example 2: the method with silicon manganese slag replaces the multistage leaching of manganese carbonate ore to produce electrolytic metal Mn the steps include:
(1), beat anolyte and go into the chemical combination jar, volume is 120 cubic meters, opens the chemical combination jar and stirs after 10 minutes, sampling send the laboratory to analyze: manganese, ammonium sulfate, sulfuric acid content.Anolyte content Mn
2+: 14g/L, H
+: 35g/L, (NH
4)
2SO
4: 110g/L.
(2), budgetary estimate goes out the silicon manganese slag and the sulfuric acid amount that should add according to analytical results.Input amount is pressed Mn in the solution
2+Concentration promotes 12g/L and calculates, and sour ore deposit ratio is controlled at 0.85, silicon manganese slag grade ∑ Mn:17%, sulfuric acid concentration 98%.Once leach as calculated and drop into 8.47 tons of silicon manganese slags, 3.06 tons in sulfuric acid.
(3), to the chemical combination jar, add required as calculated sulfuric acid, require operator to note the vitriolic add-on this moment, and accurately, fast, the special messenger is responsible for keeping an eye on the acid amount that adds from the sulphur acid meter measuring tank.
(4), the notice personnel of feeding intake will leach required whole silicomanganese ground-slags and winch to second floor by ton bag or material handleless cup with overhead traveling crane, be transported to a jar mouth after utilizing the second floor platform scale to its weighing again, according to input amount it is dropped in the jar, want energy focal attention jar internal reaction situation this moment, want strict control feed rate in the reaction process, prevent to emit groove.Add 1 bag of silicon manganese slag every half an hour, about 1.4 tons.
(5), the back that finishes of feeding intake stirred 1 hour, do not heat, and relied on the natural reaction liberated heat, the express laboratory analysis is sent in sampling then: manganese, sulfuric acid, ferrous content, as Mn
2+Content is approaching or reach calculating target manganese concentration requirement (22g/L), prepares press filtration.
(6), by the pressure filter press filtration to purification pot, by pipe special filtrate is poured in the chemical combination jar once more again, replenish anolyte to 120 cubic meter.Open the chemical combination jar and stir after 10 minutes, sampling send the laboratory to analyze: manganese, ammonium sulfate, sulfuric acid content.At this moment anolyte content Mn
2+: 22g/L, H
+: 20g/L, (NH
4)
2SO
4: 110g/L.
(7), budgetary estimate goes out the silicon manganese slag and the sulfuric acid amount that should add according to analytical results.Input amount is by containing Mn in the solution
2+Concentration promotes 12g/L and calculates, and sour ore deposit ratio is controlled at 0.85, silicon manganese slag grade ∑ Mn:17%, sulfuric acid concentration 98%.Secondary leaches and drops into 8.47 tons of silicon manganese slags, 3.06 tons in sulfuric acid as calculated.
(8), to the chemical combination jar, add required as calculated sulfuric acid, require operator to note the vitriolic add-on this moment, and accurately, fast, the special messenger is responsible for keeping an eye on the acid amount that adds from the sulphur acid meter measuring tank; Employed equipment has the sulphur acid meter measuring tank.
(9), the notice personnel of feeding intake will leach required whole silicomanganese ground-slags and winch to second floor by ton bag or material handleless cup with overhead traveling crane, be transported to a jar mouth after utilizing the second floor platform scale to its weighing again, according to input amount it is dropped in the jar, want energy focal attention jar internal reaction situation this moment, want strict control feed rate in the reaction process, prevent to emit groove.Add 1 bag of silicon manganese slag every half an hour, about 1.4 tons.The back adding Polyacrylamide 1.2Kg that finishes feeds intake.
(10), the back that finishes of feeding intake stirred 1 hour, do not heat, and relied on the natural reaction liberated heat.The express laboratory analysis is sent in sampling then: manganese, sulfuric acid, ferrous content, calculate 1.5 tons of the Manganse Dioxide breezes that will drop into according to ferrous content, and react after 1 hour, as ferrous reaching≤0.001g/L, can carry out neutralization operation.Manganese slag (∑ Mn:24.68%) is adjusted pH value to 4.5-5.0 in dropping into earlier, adds ammoniacal liquor again and continues neutralization, and the pH value of slip in the repeated detection jar makes the slip pH value reach 6.2～6.8 (test paper measurements) in the N-process.
Following steps are with example 1.
Example 3: the method with silicon manganese slag replaces the multistage leaching of manganese carbonate ore to produce electrolytic metal Mn the steps include:
(1), beat anolyte and go into the chemical combination jar, volume is 120 cubic meters, opens the chemical combination jar and stirs after 10 minutes, sampling send the laboratory to analyze: manganese, ammonium sulfate, sulfuric acid content.Anolyte content Mn
2+: 14g/L, H
+: 35g/L, (NH
4)
2SO
4: 110g/L.
(2), budgetary estimate goes out the silicon manganese slag and the sulfuric acid amount that should add according to analytical results.Input amount is pressed Mn in the solution
2+Concentration promotes 10g/L and calculates, and sour ore deposit ratio is controlled at 0.75, silicon manganese slag grade ∑ Mn:12%, sulfuric acid concentration 98%.Once leach as calculated and drop into 10 tons of silicon manganese slags, 3.37 tons in sulfuric acid.
(3), to the chemical combination jar, add required as calculated sulfuric acid, require operator to note the vitriolic add-on this moment, and accurately, fast, the special messenger is responsible for keeping an eye on the acid amount that adds from the sulphur acid meter measuring tank.
(4), the notice personnel of feeding intake will leach required whole silicomanganese ground-slags and winch to second floor by ton bag or material handleless cup with overhead traveling crane, be transported to a jar mouth after utilizing the second floor platform scale to its weighing again, according to input amount it is dropped in the jar, want energy focal attention jar internal reaction situation this moment, want strict control feed rate in the reaction process, prevent to emit groove.Add 1 bag of silicon manganese slag every half an hour, about 1.4 tons.
(5), the back that finishes of feeding intake stirred 2 hours, do not heat, and relied on the natural reaction liberated heat, the express laboratory analysis is sent in sampling then: manganese, sulfuric acid, ferrous content, as Mn
2+Content is approaching or reach calculating target manganese concentration requirement (22g/L), prepares press filtration.
(6), by the pressure filter press filtration to purification pot, by pipe special filtrate is poured in the chemical combination jar once more again, replenish anolyte to 120 cubic meter.Open the chemical combination jar and stir after 10 minutes sampling analysis: manganese, ammonium sulfate, sulfuric acid content.At this moment anolyte content Mn
2+: 22g/L, H
+: 20g/L, (NH
4)
2SO
4: 110g/L.
(7), budgetary estimate goes out the silicon manganese slag and the sulfuric acid amount that should add according to analytical results.Input amount is by containing Mn in the solution
2+Concentration promotes 10g/L and calculates, and sour ore deposit ratio is controlled at 0.75, silicon manganese slag grade ∑ Mn:12%, sulfuric acid concentration 98%.Secondary leaches and drops into 10 tons of silicon manganese slags, 3.37 tons in sulfuric acid as calculated.
(8), to the chemical combination jar, add required as calculated sulfuric acid, require operator to note the vitriolic add-on this moment, and accurately, fast, the special messenger is responsible for keeping an eye on the acid amount that adds from the sulphur acid meter measuring tank; Employed equipment has the sulphur acid meter measuring tank.
(9), the notice personnel of feeding intake will leach required whole silicomanganese ground-slags and winch to second floor by ton bag or material handleless cup with overhead traveling crane, be transported to a jar mouth after utilizing the second floor platform scale to its weighing again, according to input amount it is dropped in the jar, want energy focal attention jar internal reaction situation this moment, want strict control feed rate in the reaction process, prevent to emit groove.Add 1 bag of silicon manganese slag every half an hour, about 1.4 tons.The back adding Polyacrylamide 1.2Kg that finishes feeds intake.
(10), stirred 2 hours the feed intake back that finishes, do not heat, rely on the natural reaction liberated heat to take a sample then and send the express laboratory analysis: manganese, sulfuric acid, ferrous content, calculate 1.5 tons of the Manganse Dioxide breezes that will drop into according to ferrous content, react after 1 hour, as ferrous reaching≤0.001g/L, can carry out neutralization operation.Manganese slag (∑ Mn:24.68%) is adjusted pH value to 4.5-5.0 in dropping into earlier, adds ammoniacal liquor again and continues neutralization, and the pH value of slip in the repeated detection jar makes the slip pH value reach 6.2～6.8 (test paper measurements) in the N-process.
Following steps are with example 1.
Claims (1)
1. method of producing electrolytic metal Mn, it comprises leaching, neutralization, filtration, purification and electrowinning process, it is characterized in that replacing the manganese carbonate ore two-stage to leach with silicon manganese slag,
The step that one-level leaches is:
Inject the anolyte that is enough to make material reaction in the chemical combination jar, the composition of assay anolyte adds sulfuric acid and silicon manganese slag then, and its add-on is calculated as follows according to the analytical results of anolyte composition:
Mn in the silicomanganese quantity of slag=lifting solution
2+The ∑ Mn content of concentration * anolyte volume/1000/ silicon manganese slag ... (1)
The sulfuric acid add-on=(the silicomanganese quantity of slag * sour ore deposit ratio-anolyte volume * anolyte contains H
+/ 1000)/sulfuric acid concentration ... (2)
Wherein, promote Mn in the solution
2+Concentration is 8-12g/L, and sour ore deposit ratio is that total acid content/silicomanganese quantity of slag is 0.65-0.85, the ∑ Mn content ∑ Mn:8-17% of silicon manganese slag, and sulfuric acid concentration 92.5%-98%, anolyte contains H
+Record by assay;
Feeding intake finishes afterwards stirred 1-3 hour, did not heat, and relied on the natural reaction liberated heat, then sampling analysis: Mn
2+, H
+, Fe
2+Content is as Mn
2+Content is approaching or reach calculating target manganese concentration requirement, prepares press filtration;
The step that secondary leaches is:
The one-level leach liquor passes through the pressure filter press filtration to purification pot, pour into again in the chemical combination jar, replenish anolyte and open the stirring of chemical combination jar after 10 minutes, sampling analysis manganese, ammonium sulfate, sulfuric acid content go out the silicon manganese slag and the sulfuric acid amount that should add according to analytical results by (1), (2) formula budgetary estimate; Promote Mn in the solution in the formula
2+Concentration is 8-12g/L, sour ore deposit ratio, i.e. total acid content: total silicomanganese quantity of slag is 0.65-0.85, the ∑ Mn content ∑ Mn:8-17% of silicon manganese slag, and sulfuric acid concentration 92.5%-98%, anolyte contains H
+Record by assay;
Add sulfuric acid earlier, add silicon manganese slag then, add Polyacrylamide at last, the add-on=liquor capacity of Polyacrylamide * 0.01g/L;
Feeding intake finishes afterwards stirred 1-3 hour, did not heat, and relied on the natural reaction liberated heat, then sampling analysis Mn
2+, H
+, Fe
2+Content calculates the Manganse Dioxide breeze that will drop into according to ferrous content, and its add-on=1.5 * record contain Mn in ferrous amount * material liquid volume/Manganse Dioxide breeze
4+Content; Dioxide ore for manganese major ingredient ∑ Mn45-48%, Mn
4+: 38-45%, ∑ Fe:7-9%, CaO+MgO:11-14% reacted after 1 hour, as ferrous reaching≤0.001g/L, carried out neutralization operation.
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| CN109371421A (en) * | 2018-12-04 | 2019-02-22 | 安徽工业大学 | A kind of production method of the ingot of electrolytic manganese metal containing nano particle |
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|---|---|---|---|---|
| CN102094124B (en) * | 2011-03-10 | 2013-11-20 | 中信锦州金属股份有限公司 | Method for producing electrolytic metal manganese and application thereof |
| CN102560101A (en) * | 2011-11-22 | 2012-07-11 | 保靖正华友丰新型锰材料有限公司 | Process method for improving manganese extracted in manganese ore |
| CN113463134B (en) * | 2021-07-08 | 2023-01-13 | 宁夏天元锰材料研究院(有限公司) | Process method for producing electrolytic manganese metal by using silicomanganese slag |
-
2009
- 2009-11-30 CN CN2009102202755A patent/CN101748447B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371421A (en) * | 2018-12-04 | 2019-02-22 | 安徽工业大学 | A kind of production method of the ingot of electrolytic manganese metal containing nano particle |
| CN109371421B (en) * | 2018-12-04 | 2019-11-12 | 安徽工业大学 | A kind of production method of the ingot of electrolytic manganese metal containing nano particle |
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| CN101748447A (en) | 2010-06-23 |
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