CN102826560A - Red mud resource utilization method - Google Patents
Red mud resource utilization method Download PDFInfo
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- CN102826560A CN102826560A CN2012103127185A CN201210312718A CN102826560A CN 102826560 A CN102826560 A CN 102826560A CN 2012103127185 A CN2012103127185 A CN 2012103127185A CN 201210312718 A CN201210312718 A CN 201210312718A CN 102826560 A CN102826560 A CN 102826560A
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Abstract
A red mud resource utilization method includes the steps: mixing red mud with diluted sulfuric acid solution with the concentration of 10-30% according to the weight ratio of 1:2-1:6, and stirring the mixture to slurry; adding, by mass, 5-65% of solution containing NO2<-1> or NO3<-1>, stirring the mixture in a reaction kettle and heating to 40-100 DEG C prior to leaching for 0.5-5 hours, wherein the weight ratio of the solution to the diluted sulfuric acid solution with the concentration of 10-30% is 0.1-1:100; filtering residues out to obtain filtrate, and analyzing the iron content in the filtrate; adding ferrous sulfate into the filtrate, increasing the temperature to 40-100 DEG C after stirring and dissolution, and feeding oxygen or compressed air for reaction for 1-10 hours, wherein the weight ratio of the ferrous sulfate to iron in the filtrate is 1-25:100; and ageing for 5-50 hours to obtain a silicon, iron and aluminum ternary composite water purifying agent finished product. Leaching amount of the silicon, the iron and the aluminum in the red mud can be increased by performing acid leaching for the red mud by the aid of the diluted sulfuric acid solution and the solution containing the NO2<-1> or the NO3<-1>. Besides, the added ferrous sulfate solution and the solution containing the NO2<-1> or the NO3<-1> are capable of promoting polymerization of the silicon, the iron and the aluminum in leaching liquor, and an obtained ternary composite water purifying agent is good in water purification performance.
Description
Technical field
The present invention relates to the resource technology field of industrial waste red mud, specifically is a kind of method of red mud resource utilization.
Background technology
Red mud is from bauxite, to refine the industrial solid waste residue of being discharged behind the aluminum oxide, 1 ton of aluminum oxide of the every production of average, 1.0 tons～2.0 tons red muds of subsidiary generation.China is as the fourth-largest alumina producing in world state, and the annual red mud that is produced is more than 3,000 ten thousand tons, and a large amount of red muds can not fully effectively utilize, and can only rely on large-area stockyard to stack.The one side of storing up of red mud needs certain capital cost, takies a large amount of soils, and makes the composition many capable of using in the red mud can not get reasonable utilization, has caused the waste of resource; On the other hand, because its chemical ingredients penetrates into and is prone to cause soil and groundwater pollution in the soil, people absorb these materials to red mud for a long time, will inevitably influence healthy in stacking process.The content of principal pollutant alkali, fluorochemical, sodium and aluminium etc. in the red mud has substantially exceeded national specified discharge standard.Usually, the mass concentration of alkali is that 30mg/L～400mg/L is the suitable scope at public water source, and the mass concentration of the alkali of wastewater from red mud is visible up to 2648mg/L, and the wastewater from red mud of high basicity gets into water body, and is seriously polluted.
Comprehensive utilization is mainly to red mud both at home and abroad at present: through the component of allotment red mud, utilize red mud to prepare various building materials, pottery or haydite etc.; Expand the application of red mud, reclaim alkali, iron, rare earth in the red mud; Produce water purification agent etc.Red mud is used to prepare building materials, pottery or haydite, is worth lowlyer, and receive the influence of transportation cost, market only limits to this locality, and consumption is limited; Reclaim alkali and can reduce the alkali pollution of red mud environment, little to the recycling contribution of red mud; It is still immature to reclaim iron and the present technology of rare earth, and the recovery is on the low side, and cost is higher, is difficult to extensive Industry Promotion.And utilizing red mud to have the deficiency of two aspects for the prior art of feedstock production ternary composite water purifying agent ferric-polysilicate aluminium: the silicic acid in the first product is to add in addition, does not utilize the silicon of red mud itself; It two is that iron in the red mud has been ferric iron, and is limited to the polymerization of iron.
Summary of the invention
The method that the purpose of this invention is to provide a kind of red mud resource utilization, the recycling rate of raising red mud is utilized silicon, iron and aluminium in the red mud simultaneously, improves the polymerization effect of ternary composite water purifying agent, thereby improves its water purification performance.
The present invention realizes that the technical scheme that above-mentioned purpose adopts is: a kind of method of red mud resource utilization; With the red mud is raw material; Through heating leaching, filtration, polymerization, aging step, finally obtain silicon, iron, aluminium ternary composite water purifying agent finished product, concrete steps are:
(1) is that 10～30% dilution heat of sulfuric acid mixes according to the weight ratio of 1:2～1:6 with red mud and mass percentage content, stirs the furnishing pulpous state;
(2) adding is that 5～65% of 0.1～1:100 contains NO with 10～30% dilution heat of sulfuric acid weight ratios
2 -1Or NO
3 -1Solution;
(3) in reaction kettle, stir and be heated to 40 ℃～100 ℃, leached 0.5～5 hour, filter, remove filter residue, obtain filtrating;
(4) with the content of gained filtrate analysis iron wherein;
(5) the iron weight ratio in adding and the filtrating is the ferrous sulfate of 1～25:100, stirs and is warming up to 40 ℃～100 ℃, and logical oxygen or pressurized air reacted 1～10 hour;
(6) ageing obtains silicon, iron, aluminium ternary composite water purifying agent finished product after 5～50 hours.
A kind of method of red mud resource utilization is a raw material with the red mud, through heating leaching, filtration, polymerization, aging step, finally obtains silicon, iron, aluminium ternary composite water purifying agent finished product, and concrete steps are:
(1) dilution heat of sulfuric acid with red mud and 10～30% mixes according to the weight ratio of 1:2～1:6, stirs the furnishing pulpous state;
(2) in reaction kettle, stir and be heated to 40 ℃～100 ℃, leached 0.5～5 hour, filter, remove filter residue, obtain filtrating;
(3) with the content of gained filtrate analysis iron wherein;
(4) adding is that 5～65% of 0.1～1:100 contains NO with 10～30% dilution heat of sulfuric acid weight ratios
2 -1Or NO
3 -1Solution;
(5) the iron weight ratio in adding and the filtrating is the ferrous sulfate of 1～25:100, stirs and is warming up to 40 ℃～100 ℃, and logical oxygen or pressurized air reacted 1～10 hour;
(6) ageing obtains silicon, iron, aluminium ternary composite water purifying agent finished product after 5～50 hours.
The described NO that contains
2 -1Solution be nitrous acid solution or nitrite solution, the described NO that contains
3 -1Solution be salpeter solution or nitrate soln.
The method of red mud resource utilization of the present invention is compared with the method for preparing ternary composite water purifying agent ferric-polysilicate aluminium of routine, has following beneficial effect:
With dilute sulphuric acid with contain NO
2 -1Or NO
3 -1Solution red mud is carried out acidleach, can improve the leaching amount of silicon in the red mud, iron, aluminium.
2. that adds contains NO
2 -1Or NO
3 -1Solution can promote the oxypolymerization of silicon in the immersion liquid, iron, aluminium.
3. the copperas solution that adds can bring out the polymerization that promotes silicon, iron, aluminium in the immersion liquid.
4. the ternary composite water purifying agent water purification performance of utilizing the method for red mud resource utilization of the present invention to obtain is better.
Description of drawings
Fig. 1 is the method flow diagram of red mud resource utilization of the present invention.
Embodiment
Below in conjunction with Fig. 1 and specific embodiment the present invention is made further detailed description.Except that specified otherwise, degree of the present invention is mass percentage content.
Embodiment 1
1kg red mud and 6kg10% dilution heat of sulfuric acid are mixed, stir the furnishing pulpous state; Add 60g 10% dilute nitric acid solution, in reaction kettle, stir and be heated to 40 ℃, leached 5 hours; Filter, remove filter residue, the content of analyzing iron in the filtrating is 100g; Add the 25g ferrous sulfate, stir and be warming up to 40 ℃, logical oxygen or pressurized air reaction 10 hours; Ageing obtains silicon, iron, aluminium ternary composite water purifying agent after 5 hours, be packaged as finished product.
Embodiment 2
1kg red mud and 5kg15% dilution heat of sulfuric acid are mixed, stir the furnishing pulpous state; Add 25g 5% rare nitrous acid solution, in reaction kettle, stir and be heated to 60 ℃, leached 3 hours; Filter, remove filter residue, the content of analyzing iron in the filtrating is 200g; Add the 2g ferrous sulfate, stir and be warming up to 60 ℃, logical oxygen or pressurized air reaction 6 hours; Ageing obtains the ternary composite water purifying agent after 20 hours, be packaged as finished product.
Embodiment 3
1kg red mud and 4kg25% dilution heat of sulfuric acid are mixed, stir the furnishing pulpous state; In reaction kettle, stir and be heated to 80 ℃, leached 1 hour; Filter, remove filter residue, the content of analyzing iron in the filtrating is 50g; Add 8g 35% potassium nitrate solution 7.5g ferrous sulfate, stir and be warming up to 80 ℃, logical oxygen or pressurized air reaction 4 hours; Ageing obtains the ternary composite water purifying agent after 35 hours, be packaged as finished product.
Embodiment 4
1kg red mud and 2kg30% dilution heat of sulfuric acid are mixed, stir the furnishing pulpous state; In reaction kettle, stir and be heated to 100 ℃, leached 0.5 hour; Filter, remove filter residue, the content of analyzing iron in the filtrating is 150g; Add 2g 65% sodium nitrite solution and 7.5g ferrous sulfate, stir and be warming up to 100 ℃, logical oxygen or pressurized air reaction 1 hour; Ageing obtains the ternary composite water purifying agent after 50 hours, be packaged as finished product.
Claims (3)
1. the method for a red mud resource utilization is a raw material with the red mud, through heating leaching, filtration, polymerization, aging step, finally obtains silicon, iron, aluminium ternary composite water purifying agent finished product; It is characterized in that concrete steps are:
(1) is that 10～30% dilution heat of sulfuric acid mixes according to the weight ratio of 1:2～1:6 with red mud and mass percentage content, stirs the furnishing pulpous state;
(2) add with 10～30% dilution heat of sulfuric acid weight ratios be that the mass percentage content of 0.1～1:100 is 5～65% to contain NO
2 -1Or NO
3 -1Solution;
(3) in reaction kettle, stir and be heated to 40 ℃～100 ℃, leached 0.5～5 hour, filter, remove filter residue, obtain filtrating;
(4) with the content of gained filtrate analysis iron wherein;
(5) the iron weight ratio in adding and the filtrating is the ferrous sulfate of 1～25:100, stirs and is warming up to 40 ℃～100 ℃, and logical oxygen or pressurized air reacted 1～10 hour;
(6) ageing obtains silicon, iron, aluminium ternary composite water purifying agent finished product after 5～50 hours.
2. the method for a red mud resource utilization is a raw material with the red mud, through heating leaching, filtration, polymerization, aging step, finally obtains silicon, iron, aluminium ternary composite water purifying agent finished product; It is characterized in that concrete steps are:
(1) is that 10～30% dilution heat of sulfuric acid mixes according to the weight ratio of 1:2～1:6 with red mud and mass percentage content, stirs the furnishing pulpous state;
(2) in reaction kettle, stir and be heated to 40 ℃～100 ℃, leached 0.5～5 hour, filter, remove filter residue, obtain filtrating;
(3) with the content of gained filtrate analysis iron wherein;
(4) add with 10～30% dilution heat of sulfuric acid weight ratios be that the mass percentage content of 0.1～1:100 is 5～65% to contain NO
2 -1Or NO
3 -1Solution;
(5) the iron weight ratio in adding and the filtrating is the ferrous sulfate of 1～25:100, stirs and is warming up to 40 ℃～100 ℃, and logical oxygen or pressurized air reacted 1～10 hour;
(6) ageing obtains silicon, iron, aluminium ternary composite water purifying agent finished product after 5～50 hours.
3. the method for red mud resource utilization according to claim 1 and 2 is characterized in that, the described NO that contains
2 -1Solution be nitrous acid solution or nitrite solution, the described NO that contains
3 -1Solution be salpeter solution or nitrate soln.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291540A (en) * | 2014-02-19 | 2015-01-21 | 开封新巨源环保科技开发有限公司 | Resourceful treatment method for red mud |
| CN105170155A (en) * | 2015-08-07 | 2015-12-23 | 神华集团有限责任公司 | Modified red mud, modification method thereof and catalyst applicable to direct coal liquefaction |
| CN107447113A (en) * | 2017-08-11 | 2017-12-08 | 中国科学院过程工程研究所 | A kind of method that iron and aluminium are separated from red mud and/or iron content solid waste |
| CN107475520A (en) * | 2017-08-11 | 2017-12-15 | 中国科学院过程工程研究所 | The separating technology of iron aluminium in a kind of red mud |
| CN115180797A (en) * | 2022-07-15 | 2022-10-14 | 上海申英环保科技有限公司 | Polyaluminum ferric silicate medicament for sewage treatment and preparation method and application thereof |
| WO2023004927A1 (en) * | 2021-07-26 | 2023-02-02 | 中钢集团马鞍山矿山研究总院股份有限公司 | Full-quantitative overall utilization method for step-by-step recovery of iron, sodium and tailings from bayer red mud |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117262A (en) * | 2006-07-26 | 2008-02-06 | 淄博中科新材料有限公司 | Manufacturing method of bayer process red mud flocculating agent |
| CN102557388A (en) * | 2012-01-09 | 2012-07-11 | 济南大学 | Composite sludge flocculation dehydration conditioner prepared by using red mud |
-
2012
- 2012-08-29 CN CN2012103127185A patent/CN102826560A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117262A (en) * | 2006-07-26 | 2008-02-06 | 淄博中科新材料有限公司 | Manufacturing method of bayer process red mud flocculating agent |
| CN102557388A (en) * | 2012-01-09 | 2012-07-11 | 济南大学 | Composite sludge flocculation dehydration conditioner prepared by using red mud |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291540A (en) * | 2014-02-19 | 2015-01-21 | 开封新巨源环保科技开发有限公司 | Resourceful treatment method for red mud |
| CN104291540B (en) * | 2014-02-19 | 2015-12-30 | 开封新巨源环保科技开发有限公司 | A kind of recycling processing method of red mud |
| CN105170155A (en) * | 2015-08-07 | 2015-12-23 | 神华集团有限责任公司 | Modified red mud, modification method thereof and catalyst applicable to direct coal liquefaction |
| CN105170155B (en) * | 2015-08-07 | 2018-05-25 | 神华集团有限责任公司 | Changed red mud, its method of modifying and the catalyst suitable for DCL/Direct coal liquefaction |
| CN107447113A (en) * | 2017-08-11 | 2017-12-08 | 中国科学院过程工程研究所 | A kind of method that iron and aluminium are separated from red mud and/or iron content solid waste |
| CN107475520A (en) * | 2017-08-11 | 2017-12-15 | 中国科学院过程工程研究所 | The separating technology of iron aluminium in a kind of red mud |
| WO2023004927A1 (en) * | 2021-07-26 | 2023-02-02 | 中钢集团马鞍山矿山研究总院股份有限公司 | Full-quantitative overall utilization method for step-by-step recovery of iron, sodium and tailings from bayer red mud |
| CN115180797A (en) * | 2022-07-15 | 2022-10-14 | 上海申英环保科技有限公司 | Polyaluminum ferric silicate medicament for sewage treatment and preparation method and application thereof |
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Application publication date: 20121219 |