CN103588235A - Method for producing polyaluminium sulfate by using red mud slag - Google Patents
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Abstract
The invention provides a method for producing polyaluminium sulfate by using a red mud slag. The method comprises the following steps: iron in the red mud is recovered, wherein the red mud is a solid waste produced in the production of aluminium oxide, the slag is blended with concentrated sulfuric acid after the recovery of iron to conduct sulfurizing roasting, then water leaching is implemented to obtain an aluminum sulfate solution containing rare metals like rare earth, the rare metal slag is extracted through extraction, the raffinate is added into lime milk to conduct an alkalized polymerization reaction, the pH value and the temperature of the raffinate are controlled, the impurities like titanium and iron are separated through hydrolysis, a stabilizing agent is added at the low basicity, then lime milk is added to conduct an emulsion reaction, the solution is subjected to filter pressing when the basicity reaches a preset value, the filter residue is a titanium-rich slag, the liquid subjected to the filter-pressing is put into an aging vat and aged to obtain a high-concentration polyaluminium sulfate product. The method has the advantages of simple process and feasible operation, the comprehensive utilization of the red mud is achieved, the correlative charge for the stockpiling of the red mud is reduced, and meanwhile, the influence caused by the stockpiling of the red mud to the environment and the accident potential are also eliminated.
Description
Technical field
The present invention relates to field of metallurgy, be specifically related to reclaim in a kind of waste red mud slag that extracts aluminum oxide from ore the method for aluminium.
Background technology
In aluminum ore Bayer process alumina producing, bauxite and lime, circulation alkali liquor mixer mill carry out stripping after making qualified ore pulp, and under high temperature, High Pressure, the aluminum oxide in ore enters solution, and its insolubles is red mud.After stripping, ore pulp is through dilution, after sedimentation solid-liquid separation, and the underflow red mud slurry of generation is outer row after three counter flow washings, the attached alkali of filtered and recycled.Produce l ton aluminum oxide and can produce 1.1～1.5 tons of red muds, along with the fast development of aluminum oxide industry in recent years, nearly 100,000,000 tons of global annual aluminum oxide output, only China's aluminum oxide output of 2012 just reaches 4,214 ten thousand tons, approximately 5000～6,000 ten thousand tons of red mud quantity dischargeds.At present a large amount of red mud is that the method that adopts ocean disposal and land to store up is disposed in the world, and China mostly adopts the methods such as level land Gao Tai, lowland filling to the processing of red mud, taken a large amount of soils.The red mud producing is middle strong basicity, because stacking red mud, can cause certain pollution to underground water, surrounding resident domestic water and farm crop are subject to certain impact, particularly 2010, after having there is Hungary's red mud dam break pollution Danube accident, caused especially the whole world showing great attention to red mud problem.Therefore red mud store up management difficulty and environmental risk is increasing, the stacking of red mud simultaneously can spend a large amount of handling chargess, stockyard construction and maintenance cost, so alumina laterite has a strong impact on and restricting ecotope.
Along with the pay attention to day by day of China to environmental issue, the research about red mud comprehensive utilization in recent years becomes focus again.In red mud, there is valency rare metal kind many, as iron, aluminium, rare metal, rare earth etc., its Fe in red mud
2o
3content can reach more than 38%, Al
2o
3: 16～18%.The comprehensive utilizating research of red mud mainly comprises two aspects: the one, extract the useful component in red mud, and reclaim valuable metal; The 2nd, using red mud as general raw mineral materials, integral body is used.Due to red mud processing cost problem, many achievements in research of utilizing about red mud, also not Industry Promotion.
At present, in prior art, from red mud, reclaim the method for aluminium, it is mainly the method that adopts hydrochloric acid acidleach, pass through comparatively high temps, such as after the mode of Leaching in Hydrochloric Acid under 70 ℃ of heated conditions leaches, through removing titanium slag, calcium slag, after rare earth, the last separated aluminium that obtains, Chinese document for example, Wang Keqin, Wanghao, Li Shenghu work, title " Leaching in Hydrochloric Acid red mud reclaims the research of aluminium ", the technology that < < non-ferrous metal (Smelting Part) > > the 7th phase 16-18 page in 2012 is recorded.The method can reclaim aluminium with the higher rate of recovery.But the method exists step complicated, reclaims composition single, throw out purification separated in its process is cumbersome, is unfavorable for the recycling of other compositions.
Prior art processes route is comparatively complicated, and treatment process trouble mostly is the special recovery for one or two kind of element, and overall availability is low, and other compositions in red mud are discarded more, still have relatively large waste residue and discharge.And prior art does not directly utilize red mud to produce the method for polyaluminium sulfate.Therefore, find a kind of technique more simple, rate of recovery product purity is high, and the method that other elements in red mud reclaim aluminium in also can the red mud of effective recycling has realistic meaning very much.
Polyaluminium sulfate is applied in drinking-water water source purifying is produced more at present, and for the operation of flocculating, the coagulation effect of polymerize aluminum chloride is better, and the colority of water after processing is substantially constant, but in tap water, understands aluminium residual, toxigenous problem.
Summary of the invention
The object of this invention is to provide a kind of method of producing polyaluminium sulfate with red mud slag, the method has been simplified operational path, and in red mud, each useful component comprehensive reutilization rate is high, has overcome the defect of prior art.
Method of producing polyaluminium sulfate with red mud slag of the present invention, comprises the following steps:
A, to from ore, extract after alumina producing waste red mud reclaim ferro element, make the content of ferro element be down to 1%-8%;
B, the slag reclaiming after ferro element is mixed with the vitriol oil, carry out sulfurization roasting;
C, the mixture after roasting is carried out to water logging, after filtering, obtain main containing rare metal vitriol, Tai-Ace S 150 and titanyl sulfate metal-salt mixing solutions;
D, utilize mixed extractant to extract metal-salt mixing solutions, remove organic phase filter residue, retain raffinate solution;
E, to the raffinate solution polyreaction that alkalizes: to limit in surplus solution, stir and add milk of lime, control solution temperature 60-80 ℃, when basicity is 15-25%, add stablizer, continue again to add milk of lime until basicity is greater than 40%, solution is carried out to press filtration, remove filter residue, liquid after press filtration is put into ripening tank slaking 20-40 hour, obtains polyaluminum sulfate aluminum solutions.
The method of extracting aluminum oxide in described steps A from ore is Bayer process, soda-lime sintering process or Bayer-sintering integrated process.It is red mud that these methods are prepared the tailings obtaining after aluminum oxide.
Described steps A is that the pig iron is produced in high temperature reduction melting from the method for recovering iron from red mud element.As applicant's patent, title: " a kind of method that reclaims iron from alumina producing waste red mud ", the patent No.: the technology of recording in " 201310006001.2 ".
The raw ferriferous method of described high temperature reduction melting is:
First red mud is removed to most of moisture content through super-dry, to the red mud water content 12-25% that is its gross weight, this is had to certain moisture red mud ball processed, utilize subsequently the heat of reduction furnace exhaust combustion to dry red mud ball, then dry red mud ball, coke, Wingdale, rhombspar are mixed in the ratio of 25-40:15-20:2-3:1-2, add in reduction furnace and smelt iron, by scum separation, obtain iron and slag.
When the pig iron is produced in described high temperature reduction melting, the hot blast temperature of reduction furnace ironmaking is 900～1100 ℃, blast 220mmHg, and in stove, smelting temperature is 1550～1600 ℃, and tapping temperature is higher than 1400 ℃.
Adopt high temperature reduction melting direct production pig iron technology, iron recovery can reach more than 98%, and in slag, iron level is very low.
In described step B, the weight proportion of slag and the vitriol oil is 1:1-2, and roasting time is 1-2 hour, and by the high heat release of the vitriol oil and metal reaction, the temperature of sulfurization roasting can reach more than 400 ℃, and reaction is fast, leaching effect is good.
In described step C, during water logging, the weight proportion of water and mixture is 2-5:1,, water logging 1-2 hour.
In described step D, the method that rare metal slag is extracted in extraction is:
With P2O4, extract mixed extractant solvent, according to P2O4 extraction mixed solvent and metal-salt mixed liquor volume than being the ratio of 1:8～15, P2O4 is extracted to mixed solvent to add in metal-salt mixing solutions, stratification after stirring, rare metal vitriol enters organic phase, Tai-Ace S 150, titanyl sulfate and other metal ions are retained in raffinate, isolate raffinate solution for standby.
In described step e, alkalization polyreaction is by slowly adding milk of lime, and solution pH value is controlled 2.5-4, controls temperature 65-75 ℃, and the basicity before finally filtering is controlled as 40%-50%.
The definition of basicity: the equivalent per-cent of OH and Al in poly aluminium chloride molecule ((OH)/(Al) * 100 (%)).
During with P2O4 extraction mixed extractant solvent, after P2O4 extraction mixed solvent mixes with metal-salt mixing solutions, can be divided into organic phase and raffinate solution phase, organic phase can also be carried out extraction process and be extracted titanium and rich scandium scraps, its process is: by sodium hydroxide solution back extraction organic phase, obtain back extraction slag, with dissolving with hydrochloric acid back extraction slag, regulator solution pH value, heating hydrolysis is except titanium; Then use TBP, tributyl phosphate extracts for the second time, uses sodium hydroxide solution back extraction, obtains the rich scraps that scandium content is higher.
In described step e, stablizer is tartrate and/or sodium tartrate.
The chemical reaction that aluminium of the present invention reclaims is:
3H
2SO
4+?Al
2O
3=?Al
2（SO
4）
3+3H
2O
nAl
2(SO
4)
3·14H
2O+(n×m/2)Ca(OH)
2+xH
2O?=?[Al
2(OH)m(SO
4)
3-m/2]n+(?n×m/2)CaSO
4↓+yH
20
1≤m≤5 wherein, n≤10.
Positively effect of the present invention:
1, the present invention using the slag after the solid waste red mud ironmaking of alumina producing as raw material, aluminium is reclaimed and polymerization, produce polyaluminium sulfate, the rate of recovery can reach more than 85%, the product polyaluminium sulfate solution quality obtaining is good, on flocculating property or on dosage, all than traditional Tai-Ace S 150, there is larger superiority, and there is the broader use range to former water pH value.Meanwhile, because iron content is very low, be more suitable for the application of the industry such as high-quality papermaking.
2, sulfurization roasting is mainly that material and the vitriol oil are directly mixed and carry out chemical reaction, this reaction is thermopositive reaction, produce a large amount of heat, temperature of reaction is raise, can reach more than 400 ℃, play the effect of roasting, extract technology with respect to prior art, be characterized in that speed of response is fast, leaching effect good, reaction completeness is high, only need within 1-2 hour, just can react completely, and the slag after sulfurization roasting, water logging, main component is calcium sulfate, can be used for producing gypsum or cement additire, can not carry out outer row, on not impact of environment.The amount of integrated solid waste has reduced 20～30%.
3, existing iron recovery technology is mainly the method that adopts magnetic separation, directly from recovering iron from red mud concentrate, iron recovery is about 20%, very not thorough, contriver finds after deliberation, if utilize high Fe contained like this slag to carry out sulfuric acid baking according to method of the present invention, then water logging, metal-salt mixing solutions is extracted and extracts rare metal slag, surplus solution adds the milk of lime polyreaction that alkalizes, get rid of the polyaluminum sulfate aluminum solutions of preparing after rich titanium slag, because the content of iron ion is too high, the iron ion of unavoidable meeting doped portion in last solution, affect the purity of polyaluminium sulfate, therefore, the method cannot be carried out according to technique of the present invention after reclaiming iron.In addition, if in polyaluminium sulfate all there there is no any iron ions, also be unfavorable for the water that ensures safety, because if there is no iron ion, polyaluminium sulfate has aluminum ion pollution after processing water, increase the toxicity of water, if contain a small amount of iron composition, while processing water, not only can keep the coagulation performance of polymerize aluminum chloride, its molysite can also degradation water in organism, increase water quality, there is the advantages such as the water of reduction toxicity.Contriver, after lot of experiment validation, show that in red mud, iron level will be controlled at 1%-8%, the purity of the polyaluminium sulfate that guarantee extracts, the technique effect while simultaneously promoting its post-processed water.
4, in the raw material blast furnace slag in the present invention, contain a lot of valuable elements, filtrate after sulfurization roasting, water logging is extracted rare metal slag by extraction, rich titanium slag is separated out in hydrolysis, make a large amount of valuable elements obtain enrichment, reached industrial grade, for further fully utilizing and created favourable condition.
5, the present invention has that technique is simple, operation is easily gone, and has accomplished the comprehensive utilization of red mud, has reduced the associated cost of red mud pilling, has also eliminated impact and accident potential that red mud pilling brings to environment simultaneously.
Accompanying drawing explanation
Fig. 1 is that the present invention produces the process flow sheet of polyaluminium sulfate with red mud slag
Fig. 2 is PAS and the PAC processing drinking water effect that the embodiment of the present invention provides
embodiment
As shown in Figure 1, the solid waste red mud of alumina producing is through reclaiming iron, slag after recovery iron is mixed with the vitriol oil and carries out sulfurization roasting, after going out by water logging, obtain the alum liquor containing rare metals such as rare earths, by extraction, extract rare metal slag, by the alum liquor heating of raffinate, add the milk of lime polyreaction that alkalizes, control pH value and the temperature of solution, the impurity such as titanium and iron are separated out in hydrolysis, and when low basicity, add stablizer, continue again to add milk of lime to carry out emulsion reaction, when basicity reaches after preset value, solution is carried out to press filtration, filter residue is rich titanium slag, liquid after press filtration is put into ripening tank slaking and is high density polyaluminium sulfate product.The addition of milk of lime can calculate according to the amount of aluminium in slag, basicity is controlled, thereby controlled the amount that adds milk of lime.
Below in conjunction with embodiment, present method is further illustrated
Embodiment 1
Iron-holder 8% in slag after the solid waste red mud recovery iron of alumina producing, slag mixes with the vitriol oil and carries out sulfurization roasting, the weight of slag and the vitriol oil is 1:2, roasting 2 hours, then the water that adds 3 times, water logging 1.5 hours, filters, metal-salt mixing solutions after water logging is filtered extracts with P2O4 extraction mixed solvent, P2O4 extraction mixed solvent is with metal-salt mixed liquor volume than being 1:8, and rare metal slag, the alum liquor composition Al of raffinate are extracted in extraction
2o
335.24g/L, TiO
218.02g/L, Na
2o 23.1g/L, Fe
2o
38.72g/L, Sc
2o
30.32mg/L, adds the milk of lime polyreaction that alkalizes, and controls the pH value 2.5 of solution, temperature 60 C, titanium and iron are separated out in hydrolysis, while detecting basicity 20%, add stablizer, continue to add milk of lime to carry out emulsion reaction, after basicity reaches 40%, solution is carried out to press filtration, filter residue is rich titanium slag, liquid after press filtration is put into ripening tank slaking 30 hours, obtains alumina content 10.7%, the polyaluminium sulfate product of basicity 53.4%.
Embodiment 2
Iron-holder 5% in slag after the solid waste red mud recovery iron of alumina producing, slag mixes with the vitriol oil and carries out sulfurization roasting, the weight of slag and the vitriol oil is 1:1, roasting 1 hour, then the water that adds 2 times, water logging 2 hours, filters, and the metal-salt mixing solutions after water logging is filtered extracts with P2O4 extraction mixed solvent, P2O4 extraction mixed solvent is 1:10 with metal-salt mixed liquor volume ratio, the alum liquor composition Al of raffinate
2o
347.26g/L, TiO
210.58g/L, Na
2o 10.60g/L, Fe
2o
35.15g/L, Sc
2o
30.65mg/L, is heated to 75 ℃ and adds the milk of lime polyreaction that alkalizes, and controls the pH value 2.5～3.0 of solution, stir 1h hydrolysis and separate out titanium and iron, when detection basicity reaches 15%, add stablizer, continue to add milk of lime to carry out emulsion reaction, after basicity reaches 45%, solution is carried out to press filtration, and filter residue is rich titanium slag, and the liquid after press filtration is put into ripening tank slaking 20 hours, obtain alumina content 13.3%, the polyaluminium sulfate product of basicity 52.4%.
Embodiment 3
First red mud is removed to most of moisture content through super-dry, that red mud water content is 12% of gross weight, this is had to certain moisture red mud ball processed, utilize subsequently the heat of reduction furnace exhaust combustion to dry red mud ball, then dry red mud ball, coke, Wingdale, rhombspar are mixed in the ratio of 25:15:2:1, add in reduction furnace and smelt iron, by scum separation, obtain iron and slag.Slag adds in reduction furnace smelts iron, and the hot blast temperature of reduction furnace ironmaking is 900～1000 ℃, blast 220mmHg, and in stove, smelting temperature is 1550～1600 ℃, and tapping temperature, higher than 1400 ℃, obtains iron and slag by scum separation; Iron-holder 3% in slag after the solid waste red mud recovery iron of alumina producing, slag mixes with the vitriol oil and carries out sulfurization roasting, the weight of slag and the vitriol oil is 1:1.5, roasting 1.5 hours, then the water that adds 5 times, water logging 1 hour, filters, and the metal-salt mixing solutions after water logging is filtered extracts with P2O4 extraction mixed solvent, P2O4 extraction mixed solvent is 1:12 with metal-salt mixed liquor volume ratio, the alum liquor composition Al of raffinate
2o
332.16g/L, TiO
218.65g/L, Na
2o 19.75g/L, Fe
2o
37.94g/L, Sc
2o
30.70mg/L, is heated to 80 ℃ and adds the milk of lime polyreaction that alkalizes, and controls the pH value 3.5 of solution, stir 1h hydrolysis and separate out titanium and iron, when detection basicity reaches 25%, add stablizer, continue to add milk of lime to carry out emulsion reaction, after basicity reaches 50%, solution is carried out to press filtration, and filter residue is rich titanium slag, and the liquid after press filtration is put into ripening tank slaking 40 hours, obtain alumina content 10.1%, the polyaluminium sulfate product of basicity 43.9%.
Embodiment 4
First red mud is removed to most of moisture content through super-dry, that red mud water content is 20% of gross weight, this is had to certain moisture red mud ball processed, utilize subsequently the heat of reduction furnace exhaust combustion to dry red mud ball, then dry red mud ball, coke, Wingdale, rhombspar are mixed in the ratio of 40:20:3:2, add in reduction furnace and smelt iron, by scum separation, obtain iron and slag.The hot blast temperature of reduction furnace ironmaking is 1000～1100 ℃, blast 220mmHg, and in stove, smelting temperature is 1550～1600 ℃, and tapping temperature, higher than 1400 ℃, obtains iron and slag by scum separation; Iron-holder 1% in slag after the solid waste red mud recovery iron of alumina producing, slag mixes with the vitriol oil and carries out sulfurization roasting, the weight of slag and the vitriol oil is 1:1.8, roasting 1.6 hours, then the water that adds 4 times, water logging 1 hour, filters, and the metal-salt mixing solutions after water logging is filtered extracts with P2O4 extraction mixed solvent, P2O4 extraction mixed solvent is 1:15 with metal-salt mixed liquor volume ratio, the alum liquor composition Al of raffinate
2o
330.36g/L, TiO
217.62g/L, Na
2o 18.70g/L, Fe
2o
37.65g/L, Sc
2o
30.80mg/L, is heated to 65 ℃ and adds the milk of lime polyreaction that alkalizes, and controls the pH value 4 of solution, stir 1h hydrolysis and separate out titanium and iron, when detection basicity reaches 25%, add stablizer, continue to add milk of lime to carry out emulsion reaction, after basicity reaches 50%, solution is carried out to press filtration, and filter residue is rich titanium slag, and the liquid after press filtration is put into ripening tank slaking 32 hours, obtain alumina content 12.3%, the polyaluminium sulfate product of basicity 47.9%.
Embodiment 5
The river of Qu Liangzumou water factory, each group is established 5 1000ml reactors, and the turbidity of this river is 20.08NTU.First group of technical grade polymerize aluminum chloride (PAC) that adds this current use in waterworks of different amounts, second group of polyaluminium sulfate (PAS) that adds the embodiment of the present invention 2, relatively the polyaluminium sulfate of technical grade polymerize aluminum chloride and the embodiment of the present invention 2 is processed the effect of river.By design sketch 1, can be found out, river turbidity is along with the consumption increase of the polyaluminium sulfate of polymerize aluminum chloride and the embodiment of the present invention 2 all diminishes, and when consumption is 30mg/L, river turbidity is respectively 1.3NTU and 1.67NTU, when consumption is 50mg/L, the river turbidity after processing is substantially similar.In this flow process of purifying river water, require the turbidity of processing river lower than 2NTU, therefore, these two kinds of chemicals treatment rivers can reach cleanup standard, but in the polyaluminium sulfate of the embodiment of the present invention 2, contain a small amount of iron, be the water purification agent with Polyferric Sulfate class character, after wherethrough reason, can avoid or reduce through simple polymerisation aluminum chloride and process aluminium toxicity and the secondary pollution problem that river brings.PAS and PAC processing drinking water effect are shown in Fig. 1.
Embodiment 6
The polyaluminium sulfate dosage of development will adopt the polyaluminium sulfate (PAS) of the embodiment of the present invention 4 and traditional Tai-Ace S 150 wadding (AS), polymerize aluminum chloride (PAC) to coagulate the relation that agent situation makes comparisons to investigate dosage and flocculating effect on the impact of its flocculating property, and the results are shown in Table the turbidity that 1(processes former water is 18.6NTU):
As can be seen from Table 1, the in the situation that of identical dosage, the flocculating effect of the polyaluminium sulfate of the embodiment of the present invention 4 is better than traditional Tai-Ace S 150 greatly, more suitable than flocculating effect with polymerize aluminum chloride, when dosage reaches 20mg/L, raw water turbidity reaches 2.1NTU, and flocculating effect is fine.
By its performance study is shown, polyaluminium sulfate is all having larger superiority than traditional Tai-Ace S 150 on flocculating property or on dosage, under the same conditions, the turbidity removal effect of polyaluminium sulfate is obviously better than Tai-Ace S 150, slightly better than polymerize aluminum chloride.
Claims (10)
1. with red mud slag, produce a method for polyaluminium sulfate, it is characterized in that comprising the following steps:
A, to from ore, extract after alumina producing waste red mud reclaim ferro element, make the content of ferro element be down to 1%-8%;
B, the slag reclaiming after ferro element is mixed with the vitriol oil, carry out sulfurization roasting;
C, the mixture after roasting is carried out to water logging, after filtering, obtain main containing rare metal vitriol, Tai-Ace S 150 and titanyl sulfate metal-salt mixing solutions;
D, utilize mixed extractant to extract metal-salt mixing solutions, remove organic phase filter residue, retain raffinate solution;
E, to the raffinate solution polyreaction that alkalizes: to limit in surplus solution, stir and add milk of lime, control solution temperature 60-80 ℃, when basicity is 15-25%, add stablizer, continue again to add milk of lime until basicity is greater than 40%, solution is carried out to press filtration, remove filter residue, liquid after press filtration is put into ripening tank slaking 20-40 hour, obtains polyaluminum sulfate aluminum solutions.
2. method of producing polyaluminium sulfate with red mud slag as claimed in claim 1, is characterized in that: the method for extracting aluminum oxide in described steps A from ore is Bayer process, soda-lime sintering process or Bayer-sintering integrated process.
3. method of producing polyaluminium sulfate with red mud slag as claimed in claim 1, is characterized in that: described steps A is that the pig iron is produced in high temperature reduction melting from the method for recovering iron from red mud element.
4. method of producing polyaluminium sulfate with red mud slag as claimed in claim 3, is characterized in that, the raw ferriferous method of described high temperature reduction melting is:
First red mud is removed to most of moisture content through super-dry, to the red mud water content 12-25% that is its gross weight, this is had to certain moisture red mud ball processed, utilize subsequently the heat of reduction furnace exhaust combustion to dry red mud ball, then dry red mud ball, coke, Wingdale, rhombspar are mixed in the ratio of 25-40:15-20:2-3:1-2, add in reduction furnace and smelt iron, by scum separation, obtain iron and slag.
5. the method that use red mud slag as claimed in claim 4 is produced polyaluminium sulfate, it is characterized in that: when the pig iron is produced in described high temperature reduction melting, the hot blast temperature of reduction furnace ironmaking is 900～1100 ℃, blast 220mmHg, in stove, smelting temperature is 1550～1600 ℃, and tapping temperature is higher than 1400 ℃.
6. method of producing polyaluminium sulfate with red mud slag as claimed in claim 1, is characterized in that: in described step B, the weight proportion of slag and the vitriol oil is 1:1-2, and roasting time is 1-2 hour.
7. method of producing polyaluminium sulfate with red mud slag as claimed in claim 1, is characterized in that: in described step C, during water logging, the weight proportion of water and mixture is 2-5:1, water logging 1-2 hour.
8. method of producing polyaluminium sulfate with red mud slag as claimed in claim 1, is characterized in that, in described step D, the method that rare metal slag is extracted in extraction is:
With P2O4, extract mixed extractant solvent, according to P2O4 extraction mixed solvent and metal-salt mixed liquor volume than being the ratio of 1:8～15, P2O4 is extracted to mixed solvent to add in metal-salt mixing solutions, stratification after stirring, rare metal vitriol enters organic phase, Tai-Ace S 150, titanyl sulfate and other metal ions are retained in raffinate, isolate raffinate solution for standby.
9. the method that use red mud slag as claimed in claim 1 is produced polyaluminium sulfate, it is characterized in that: in described step e, alkalization polyreaction is by slowly adding milk of lime, and solution pH value is controlled 2.5-4, control temperature 65-75 ℃, the basicity before finally filtering is controlled as 40%-50%.
10. method of producing polyaluminium sulfate with red mud slag as claimed in claim 1, is characterized in that: in described step e, stablizer is tartrate and/or sodium tartrate.
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| CN106745142A (en) * | 2017-01-19 | 2017-05-31 | 济南大学 | A kind of extraction new method for preparing high-purity aluminium chloride |
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| CN109019651A (en) * | 2018-09-30 | 2018-12-18 | 上海高桥大同净水材料有限公司 | A kind of production method of the high-purity poly aluminium sulfate of liquid |
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| CN114127319A (en) * | 2019-03-27 | 2022-03-01 | 多伦多大学管理委员会 | Method for recovering target metal from iron slag or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process |
| CN114438335A (en) * | 2021-12-29 | 2022-05-06 | 绵阳师范学院 | A kind of titanium-containing blast furnace slag treatment method |
| CN114873900A (en) * | 2022-05-31 | 2022-08-09 | 湖南平安环保股份有限公司 | Deep dehydration treatment process for conditioning municipal sludge by comprehensively utilizing red mud |
| CN115057650A (en) * | 2022-06-27 | 2022-09-16 | 安徽海螺新材料科技有限公司 | Chlorine ion permeation resistant fluoride-free alkali-free liquid accelerator and preparation method thereof |
| CN116177779A (en) * | 2022-12-09 | 2023-05-30 | 四川大学 | Recycling method of titanium dioxide wastewater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493327A (en) * | 1967-10-12 | 1970-02-03 | Reynolds Metals Co | Removal of iron from domestic bauxite liquor |
| CN1119626A (en) * | 1994-09-30 | 1996-04-03 | 周泽宇 | Process for producing polymeric aluminum sulfate |
| WO2010079369A1 (en) * | 2009-01-12 | 2010-07-15 | Nikolaos Papadopoulos | Valuable products obtained from red mud |
| CN102115828A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing iron and aluminum and coproducing sodium sulfate from red mud produced by bayer process |
| CN102851425A (en) * | 2012-08-17 | 2013-01-02 | 东北大学 | Method for high-efficiency separation and comprehensive utilization of iron, aluminum and sodium in high-iron red mud |
| CN103074456A (en) * | 2013-01-08 | 2013-05-01 | 中国铝业股份有限公司 | Method for recycling iron from waste red mud in alumina production |
-
2013
- 2013-11-18 CN CN201310575974.8A patent/CN103588235B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493327A (en) * | 1967-10-12 | 1970-02-03 | Reynolds Metals Co | Removal of iron from domestic bauxite liquor |
| CN1119626A (en) * | 1994-09-30 | 1996-04-03 | 周泽宇 | Process for producing polymeric aluminum sulfate |
| WO2010079369A1 (en) * | 2009-01-12 | 2010-07-15 | Nikolaos Papadopoulos | Valuable products obtained from red mud |
| CN102115828A (en) * | 2010-12-31 | 2011-07-06 | 谢善情 | Method for preparing iron and aluminum and coproducing sodium sulfate from red mud produced by bayer process |
| CN102851425A (en) * | 2012-08-17 | 2013-01-02 | 东北大学 | Method for high-efficiency separation and comprehensive utilization of iron, aluminum and sodium in high-iron red mud |
| CN103074456A (en) * | 2013-01-08 | 2013-05-01 | 中国铝业股份有限公司 | Method for recycling iron from waste red mud in alumina production |
Cited By (16)
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|---|---|---|---|---|
| CN104445441A (en) * | 2014-11-14 | 2015-03-25 | 河南省煤气（集团）有限责任公司 | Method for producing polymeric aluminium ferric sulfate solution from industrial waste sulfuric acid generated during purification of acetylene gas and red mud |
| CN106590689A (en) * | 2016-12-26 | 2017-04-26 | 荆门市格林美新材料有限公司 | Method for preparing composite flame retardant through recovering aluminum and magnesium from different types of sludge |
| CN106590689B (en) * | 2016-12-26 | 2018-06-19 | 荆门市格林美新材料有限公司 | The method that magnalium prepares composite flame-retardant agent is recycled from different sludge |
| CN106745142A (en) * | 2017-01-19 | 2017-05-31 | 济南大学 | A kind of extraction new method for preparing high-purity aluminium chloride |
| CN107140718A (en) * | 2017-05-09 | 2017-09-08 | 辽宁科技大学 | A kind of utilize couples the method that external field treatment red mud prepares iron aluminium flocculating agent |
| CN109019651A (en) * | 2018-09-30 | 2018-12-18 | 上海高桥大同净水材料有限公司 | A kind of production method of the high-purity poly aluminium sulfate of liquid |
| CN114127319A (en) * | 2019-03-27 | 2022-03-01 | 多伦多大学管理委员会 | Method for recovering target metal from iron slag or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process |
| CN110639930A (en) * | 2019-09-17 | 2020-01-03 | 昆明理工大学 | Recycling treatment process for roasting red mud by using activated carbon adsorbent for removing benzene and heavy hydrocarbon substances in failure |
| CN110639929A (en) * | 2019-09-17 | 2020-01-03 | 昆明理工大学 | A resource recycling treatment process for roasting red mud with expired desulfurization activated carbon adsorbent |
| CN114438335A (en) * | 2021-12-29 | 2022-05-06 | 绵阳师范学院 | A kind of titanium-containing blast furnace slag treatment method |
| CN114438335B (en) * | 2021-12-29 | 2024-02-09 | 绵阳师范学院 | Treatment method of titanium-containing blast furnace slag |
| CN114873900A (en) * | 2022-05-31 | 2022-08-09 | 湖南平安环保股份有限公司 | Deep dehydration treatment process for conditioning municipal sludge by comprehensively utilizing red mud |
| CN114873900B (en) * | 2022-05-31 | 2023-10-03 | 湖南平安环保股份有限公司 | Advanced dewatering treatment process for comprehensively utilizing red mud in municipal sludge conditioning |
| CN115057650A (en) * | 2022-06-27 | 2022-09-16 | 安徽海螺新材料科技有限公司 | Chlorine ion permeation resistant fluoride-free alkali-free liquid accelerator and preparation method thereof |
| CN116177779A (en) * | 2022-12-09 | 2023-05-30 | 四川大学 | Recycling method of titanium dioxide wastewater |
| CN116177779B (en) * | 2022-12-09 | 2024-04-19 | 四川大学 | Method for recycling titanium dioxide wastewater |
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