CN103088203A - Method for producing fine iron powder by sulfate slag - Google Patents
Method for producing fine iron powder by sulfate slag Download PDFInfo
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- CN103088203A CN103088203A CN2013100667063A CN201310066706A CN103088203A CN 103088203 A CN103088203 A CN 103088203A CN 2013100667063 A CN2013100667063 A CN 2013100667063A CN 201310066706 A CN201310066706 A CN 201310066706A CN 103088203 A CN103088203 A CN 103088203A
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Abstract
The invention discloses a method for producing fine iron powder by sulfate slag, which is simple and high in iron recovery rate. According to the method, part of impurities in sulfate slag is removed first by acid wash and then alkaline wash, so that the grade of iron is improved to prepare fine iron powder. The sulfate slag based on weight contains 46-60% of iron. As the acid liquor is reacted with iron in the sulfate slag, technical personnel in the field are hard to imagine that the acid liquor can be used to improve the grade of iron. By means of different reaction activities of impurities in the sulfate slag and acid, an appropriate amount of acid is added to remove impurities which are easier to react with acid, and the impurities which are easy to react with alkali are removed by means of alkali wash, so that the grade of iron can be greatly improved based on simpleness and practicality. The iron recovery rate is high, and unexpected technical effects are obtained.
Description
Technical field
The present invention relates to a kind of chemical treatment method of sulfate slag, be specifically related to a kind of method of producing the iron fine powder with sulfate slag.
Background technology
China produces iron and steel maximum country in the world, and the iron ore deposit of China is worldwide the country that belongs to relative shortage, the annual need from a large amount of iron ore of external import, how to make good use of existing Mineral resources, particularly make good use of the important topic that the Mineral resources of putting aside as useless are current social development.
sulfate slag is to produce with sulfurous iron ore a kind of solid slag that produces in sulfuric acid process, not high and harmful element content is higher due to its ferrous grade, the purposes of sulfate slag mainly contains two kinds at present: the one, and the raw material as manufacture of cement that iron content is low, the 2nd, iron content is high is used for Iron and Steel Production, its utilization ratio only has 40% left and right, a large amount of sulfate slags needs land occupation to stack, this not only causes the waste of iron resources, and cause the pollution of environment, therefore, seek a kind of advanced person's production technique and then produce qualified iron fine powder, the recovery and the utilization that realize sulfate slag have great economy and environment meaning.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of producing the iron fine powder with sulfate slag, and the method is simple and rate of recovery iron is high.
The technical solution adopted for the present invention to solve the technical problems is: produce the method for iron fine powder with sulfate slag, first remove partial impurities in sulfate slag with the technique of alkali cleaning again with pickling, thereby the grade of raising iron makes the iron fine powder; Wherein, sulfate slag iron content 46～60% by mass.
Wherein, aforesaid method comprises the steps:
A, pickling: with sulfate slag and acid solution in mass ratio the ratio of 1 ︰ 1～6 mix, stir 50～90min at the temperature of 5～90 ℃, filter and obtain the pickling slag; The concentration of acid solution is 0.5～15%;
B, washing: the pickling slag that step a is obtained washes with water, filters to obtain washing slag;
C, alkali cleaning: with the washing slag alkali liquid washing that step b obtains, filter and obtain the iron fine powder.
The concentration of acid solution of the present invention is the mass percentage content of acid in acid solution.
Further, in step a, described sulfate slag is iron content 48～58% by mass, sulphur 1.0～2.5%, arsenic 0.15～0.3%, zinc 1.0～2.0%, lead 0.3～0.7%, calcium 4.5～6.8%.
Further, in step a, the mass ratio of sulfate slag and acid solution is 1 ︰ 2～3, and described acid solution refers to that concentration is 4～6% hydrochloric acid soln or sulphuric acid soln.
Wherein, in aforesaid method step c, during alkali cleaning, the mass ratio of washing slag and alkali lye is 1 ︰ 1～3, and during alkali cleaning, churning time is 50～90 minutes.
Further, in step c, described alkali lye refers to that concentration is 0.5～30% sodium hydroxide and/or potassium hydroxide solution.
The concentration of alkali lye of the present invention is the mass percentage content of the alkali in alkali lye.
Further, described alkali lye refers to that concentration is 4～6% sodium hydroxide and/or potassium hydroxide solution.
Wherein, in aforesaid method step b, during washing, the mass ratio of pickling slag and water is 1 ︰ 1～3, and during washing, churning time is 3～5 minutes.
The inventive method specifically can be implemented in such a way: produce the method for iron fine powder with sulfate slag, comprise the steps:
A, pickling: with sulfate slag and hydrochloric acid soln in mass ratio the ratio of 1 ︰ 2～3 mix, stir 50～90min at the temperature of 5～90 ℃, filter and obtain the pickling slag; The concentration of hydrochloric acid soln is 4～6%; Described sulfate slag is iron content 48～58% by mass, sulphur 1.0～2.5%, arsenic 0.15～0.3%, zinc 1.0～2.0%, lead 0.3～0.7%, calcium 4.5～6.8%;
B, washing: the pickling slag that step a is obtained washes with water, and the mass ratio of pickling slag and water is 1 ︰ 1～3, and the washing churning time is 3～5 minutes, filters after washing and obtains washing slag;
C, alkali cleaning: with the washing slag alkali liquid washing that step b obtains, the mass ratio of washing slag and alkali lye is 1 ︰ 1～3, and the alkali cleaning churning time is 50～90 minutes, filters after alkali cleaning and obtains the iron fine powder; Described alkali lye refers to that concentration is 4～6% sodium hydroxide and/or potassium hydroxide solution.
The invention has the beneficial effects as follows: be used as cement producting material when in sulfate slag, iron level is low, be directly used in Iron and Steel Production when iron level is high, sulfate slag for iron content 50% left and right, the invention provides a kind of method of new processing sulfate slag, the method is first removed partial impurities in sulfate slag with the technique of alkali cleaning with pickling again with sulfate slag, thereby the grade that improves iron makes the iron fine powder, thereby the iron fine powder can be used for Iron and Steel Production, has improved the utilization ratio of sulfate slag.Due to acid solution can with sulfate slag in iron react, so those skilled in the art are difficult to expect adopting acid solution to improve the grade of iron; The present invention utilizes in sulfate slag impurity to have different reactive behavioies from acid, thereby add appropriate amount of acid to remove easier and impurity acid-respons, the mode of recycling alkali cleaning is removed easily and the impurity of alkali reaction, on simple and practical basis, the grade of raising iron that can be by a relatively large margin, and the rate of recovery of iron is high, has obtained unforeseeable technique effect.simultaneously, for iron content 48～58%, sulphur 1.0～2.5%, arsenic 0.15～0.3%, zinc 1.0～2.0%, plumbous 0.3～0.7%, the sulfate slag of calcium 4.5～6.8%, the contriver finds, derive according to theory, should adopt hydrochloric acid 5% left and right, the mass ratio of sulfate slag and hydrochloric acid just can better adopt acid cleaning process to remove wherein impurity in 1 ︰ 4～5 left and right, improve grade and the rate of recovery of iron, but the contriver finds to adopt hydrochloric acid 5% left and right by test, the mass ratio of sulfate slag and hydrochloric acid could maximum amplitude between 1 ︰ 2～3 time grade and the rate of recovery of raising iron, reduce the content of acid and but obtained unexpected technique effect.The inventive method is suitable for applying, and has great economy and environment benefit.
Embodiment
The present invention is further described below by embodiment.
The present invention produces the method for iron fine powder with sulfate slag, first remove partial impurities in sulfate slag with the technique of alkali cleaning again with pickling, thereby the grade of raising iron makes the iron fine powder; Wherein, sulfate slag iron content 46～60% by mass.The sulfate slag iron-holder is too high, can be directly used in Iron and Steel Production, and iron-holder is too low, is not enough to the iron grade in sulfate slag is brought up to the stage that iron and steel is used by simple the inventive method.The add-on that it will be appreciated by persons skilled in the art that acid solution can rationally add according to sulfate slag neutral and alkali amount of substance, makes outside the oxide compound of deironing in sulfate slag, and other alkaline matters are tried one's best and acid-respons is removed.
Preferably, aforesaid method comprises the steps:
A, pickling: with sulfate slag and acid solution in mass ratio the ratio of 1 ︰ 1～6 mix, stir 50～90min at the temperature of 5～90 ℃, filter and obtain the pickling slag; The concentration of acid solution is 0.5～15%;
B, washing: the pickling slag that step a is obtained washes with water, filters to obtain washing slag;
C, alkali cleaning: with the washing slag alkali liquid washing that step b obtains, filter and obtain the iron fine powder.
In order to make the inventive method more reasonable, the water lotion that step b washing of the present invention produces can be used for the configuration of acid solution, and the filtrate that produces of step a and step c is replenished respectively after bronsted lowry acids and bases bronsted lowry reusable again.
Preferably, in step a, described sulfate slag is iron content 48～58% by mass, sulphur 1.0～2.5%, arsenic 0.15～0.3%, zinc 1.0～2.0%, lead 0.3～0.7%, calcium 4.5～6.8%.
Acid solution of the present invention can be sulphuric acid soln, hydrochloric acid soln, preferably adopts hydrochloric acid soln, so more is conducive to remove impurity.For iron content 48～58%, sulphur 1.0～2.5%, arsenic 0.15～0.3%, zinc 1.0～2.0%, plumbous 0.3～0.7%, the sulfate slag of calcium 4.5～6.8%, the contriver finds, derives according to theory, in order to remove as much as possible in sulfate slag the alkaline matter of other activity stronger (being other easier and acid-responss) outside iron oxide, the mass ratio that should adopt hydrochloric acid 5% left and right, sulfate slag and hydrochloric acid could improve grade and the rate of recovery of iron so as much as possible in 1 ︰ 4～5 left and right; But grade and the rate of recovery of the raising iron of the maximum amplitude that the mass ratio that the contriver finds to adopt hydrochloric acid 5% left and right, sulfate slag and hydrochloric acid by test could be real between 1 ︰ 2～3 time; The contriver is by analyzing, reason may be due to the cause that contains a large amount of silicon and calcium in sulfate slag, when the usage quantity of acid is relatively high, at the easy generating portion silicic acid of step a, easily generate Calucium Silicate powder at step b and c, originally small portion silicon and the calcium that can remove are trapped in final iron fine powder, and the present invention reduces the content of acid and has but obtained unexpected technique effect.In like manner, for using sulfuric acid too, just hydrochloric acid can than the better effects if of sulfuric acid some.So further preferred, in step a, the mass ratio of sulfate slag and acid solution is 1 ︰ 2～3, described acid solution refers to that concentration is 4～6% hydrochloric acid soln or sulphuric acid soln.
Component content common according to sulfate slag, in preferred aforesaid method step c, during alkali cleaning, the mass ratio of washing slag and alkali lye is 1 ︰ 1～3, during alkali cleaning, churning time is 50～90 minutes.
Further preferred, in step c, described alkali lye refers to that concentration is 0.5～30% sodium hydroxide and/or potassium hydroxide solution.
Further, described alkali lye refers to that concentration is 4～6% sodium hydroxide and/or potassium hydroxide solution.
Preferably, in aforesaid method step b, during washing, the mass ratio of pickling slag and water is 1 ︰ 1～3, and during washing, churning time is 3～5 minutes.
Below by embodiment, the specific embodiment of the present invention is further described, but therefore protection scope of the present invention is not limited among embodiment.
Embodiment one
Get a kind of sulfate slag, the massfraction that contains various elements through chemical examination is: iron 52.48%, sulphur 1.80%, arsenic 0.12%, zinc 1.18%, lead 0.66%, calcium 6.21%.then appoint and get the 500g sulfate slag, adding the 2500g massfraction is 5% hydrochloric acid, temperature is controlled under 80 degree and normal pressure, stir 60min, filtration makes solid-liquid separation, obtain filter residue, add 1000g water in filter residue, stir 5min under normal temperature and pressure, filtration makes solid-liquid separation, obtain washing slag, adding the 1000g massfraction in the washing slag that obtains is 5% sodium hydroxid, stir at normal temperatures and pressures 60min, filtration makes solid-liquid separation, obtain the iron fine powder, wherein, the massfraction of the contained element of iron fine powder is: iron 60.75%, sulphur 0.24%, arsenic 0.0035%, zinc 0.76%0., plumbous 0.49%, calcium 1.37%.Iron recovery reaches 87.15%.
Embodiment two
get the sulfate slag 500g of embodiment one, adding the 1500g massfraction is 5% hydrochloric acid, temperature is controlled under 80 degree and normal pressure, stir 60min, filtration makes solid-liquid separation, obtain filter residue, add 1000g water in filter residue, stir 5min under normal temperature and pressure, filtration makes solid-liquid separation, obtain washing slag, adding the 1000g massfraction in the washing slag that obtains is 5% sodium hydroxid, stir at normal temperatures and pressures 60min, filtration makes solid-liquid separation, obtain the iron fine powder, wherein, the massfraction of the contained element of iron fine powder is: iron 62.61%, sulphur 0.21%, arsenic 0.0038%, zinc 0.82%, plumbous 0.54%, calcium 0.46%.Iron recovery reaches 88.84%.
Embodiment three
Get sulfate slag, the massfraction through chemically examining contained various elements is: iron 48.24%, sulphur 3.26%, arsenic 0.24%, zinc 1.62%0., lead 0.57%, calcium 5.77%.then appoint and get the 500g sulfate slag, the hydrochloric acid that adds 2000g massfraction 6%, temperature is controlled under 50 degree and normal pressure, stir 90min, filtration makes solid-liquid separation, obtain filter residue, add 750g water in filter residue, stir at normal temperatures and pressures the 4min filtration and make solid-liquid separation, obtain washing slag, adding the 1500g massfraction in the washing slag that obtains is 20% potassium hydroxide, stir at normal temperatures and pressures 90min, filtration makes solid-liquid separation, obtain the iron fine powder, the massfraction of the contained element of iron fine powder that makes is iron 58.46%, sulphur 0.28%, arsenic 0.0054%, zinc 0.91%0., plumbous 0.45%, calcium 1.24%.Iron recovery reaches 86.64%.
Embodiment four
get the sulfate slag 500g of embodiment three, the hydrochloric acid that adds 1250g massfraction 6%, temperature is controlled under 50 degree and normal pressure, stir 90min, filtration makes solid-liquid separation, obtain filter residue, add 750g water in filter residue, stir at normal temperatures and pressures the 4min filtration and make solid-liquid separation, obtain washing slag, adding the 1500g massfraction in the washing slag that obtains is 20% potassium hydroxide, stir at normal temperatures and pressures 90min, filtration makes solid-liquid separation, obtain the iron fine powder, the massfraction of the contained element of iron fine powder that makes is iron 58.93%, sulphur 0.27%, arsenic 0.0057%, zinc 0.91%, plumbous 0.44%, calcium 0.39%.Iron recovery reaches 88.69%.
Embodiment five
Get a kind of sulfate slag, the massfraction through chemically examining contained various elements is: iron 55.41%, sulphur 2.1%, arsenic 0.17%, zinc 1.35%0., lead 0.38%, calcium 5.93%.then appoint and get the 500g sulfate slag, the hydrochloric acid that adds 3000g massfraction 8%, temperature is controlled under 30 degree and normal pressure, stir 50min, filtration makes solid-liquid separation, obtain filter residue, add 600g water in filter residue, stir at normal temperatures and pressures 5min, filtration makes solid-liquid separation, obtain washing slag, adding massfraction in the washing slag that obtains is 25% sodium hydroxid 750g, stir at normal temperatures and pressures 50min, filtration makes solid-liquid separation, obtain the iron fine powder, the massfraction of the contained element of iron fine powder is iron 62.78%, sulphur 0.27%, arsenic 0.0042%, zinc 0.73%0., plumbous 0.25%, calcium 1.52%.The rate of recovery is 86.21%.
By embodiment as can be known, the inventive method is applicable to iron level at the sulfate slag of 48～58% left and right, and the iron fine powder that obtains after treatment satisfies the needs of STEELMAKING PRODUCTION.By implementing one and two contrast, three and four contrast can be found out, the mass ratio of the concentration of the preferred hydrochloric acid soln of the present invention and sulfate slag and hydrochloric acid soln can further improve grade and the rate of recovery of iron, has obtained unexpected technique effect.
Claims (8)
1. produce the method for iron fine powder with sulfate slag, it is characterized in that: first remove partial impurities in sulfate slag with the technique of alkali cleaning again with pickling, thereby the grade of raising iron makes the iron fine powder; Wherein, sulfate slag iron content 46～60% by mass.
2. method of producing iron ore concentrate with sulfate slag according to claim 1, is characterized in that comprising the steps:
A, pickling: with sulfate slag and acid solution in mass ratio the ratio of 1 ︰ 1～6 mix, stir 50～90min at the temperature of 5～90 ℃, filter and obtain the pickling slag; The concentration of acid solution is 0.5～15%;
B, washing: the pickling slag that step a is obtained washes with water, filters to obtain washing slag;
C, alkali cleaning: with the washing slag alkali liquid washing that step b obtains, filter and obtain the iron fine powder.
3. method of producing iron ore concentrate with sulfate slag according to claim 2, it is characterized in that: in step a, described sulfate slag is iron content 48～58% by mass, sulphur 1.0～2.5%, arsenic 0.15～0.3%, zinc 1.0～2.0%, lead 0.3～0.7%, calcium 4.5～6.8%.
4. method of producing iron ore concentrate with sulfate slag according to claim 3, it is characterized in that: in step a, the mass ratio of sulfate slag and acid solution is 1 ︰ 2～3, described acid solution refers to that concentration is 4～6% hydrochloric acid soln or sulphuric acid soln.
5. according to claim 2,3 or 4 described methods of producing iron ore concentrate with sulfate slag, it is characterized in that: in step c, during alkali cleaning, the mass ratio of washing slag and alkali lye is 1 ︰ 1～3, and during alkali cleaning, churning time is 50～90 minutes.
6. method of producing iron ore concentrate with sulfate slag according to claim 5, it is characterized in that: in step c, described alkali lye refers to that concentration is 0.5～30% sodium hydroxide and/or potassium hydroxide solution.
7. method of producing iron ore concentrate with sulfate slag according to claim 6, it is characterized in that: described alkali lye refers to that concentration is 4～6% sodium hydroxide and/or potassium hydroxide solution.
8. according to claim 2,3 or 4 described methods of producing iron ore concentrate with sulfate slag, it is characterized in that: in step b, during washing, the mass ratio of pickling slag and water is 1 ︰ 1～3, and during washing, churning time is 3～5 minutes.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152669A (en) * | 2014-08-21 | 2014-11-19 | 武汉中地西能科技有限公司 | Method for extracting high-grade powdered iron from low-grade sulfuric-acid residue |
| CN104789753A (en) * | 2015-02-11 | 2015-07-22 | 安徽盖娅环保科技有限公司 | New sulfur acid residue desulphurization method |
| CN106435171A (en) * | 2016-11-24 | 2017-02-22 | 攀枝花市徳铭再生资源开发有限公司 | Method for producing fine iron powder through sulfuric-acid residues |
| CN106555052A (en) * | 2016-11-24 | 2017-04-05 | 攀枝花市徳铭再生资源开发有限公司 | The method that sulfate slag reclaims iron ore concentrate |
| CN106636612A (en) * | 2016-11-24 | 2017-05-10 | 攀枝花市徳铭再生资源开发有限公司 | Method for producing powdered iron from sulfuric-acid residue |
| CN107099672A (en) * | 2017-05-16 | 2017-08-29 | 中国恩菲工程技术有限公司 | The recovery method of the fume from steel making containing zinc |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1242938A (en) * | 1968-07-08 | 1971-08-18 | Montedison Spa | Purification of iron pyrites cinders |
| DE2459700A1 (en) * | 1973-12-19 | 1975-06-26 | Auxiliar Ind Sa Empresa | Non-ferrous metals extracted from pyrite roasting residues - by the fluidized bed method and oxidation |
| CN101514393A (en) * | 2008-10-13 | 2009-08-26 | 昆明理工大学 | Dearsenization method for sulfurous iron ore slag |
| CN101554613A (en) * | 2009-05-19 | 2009-10-14 | 房志强 | Method for recycling industrial waste sulfate slag |
| CN101733407A (en) * | 2010-01-29 | 2010-06-16 | 中国地质大学（武汉） | Method for selecting iron from low-grade sulfate slag |
| CN102534187A (en) * | 2011-12-12 | 2012-07-04 | 师兆忠 | Method for treating pyrite cinder by combining acidic leaching with alkaline dissolving |
-
2013
- 2013-03-01 CN CN201310066706.3A patent/CN103088203B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1242938A (en) * | 1968-07-08 | 1971-08-18 | Montedison Spa | Purification of iron pyrites cinders |
| DE2459700A1 (en) * | 1973-12-19 | 1975-06-26 | Auxiliar Ind Sa Empresa | Non-ferrous metals extracted from pyrite roasting residues - by the fluidized bed method and oxidation |
| CN101514393A (en) * | 2008-10-13 | 2009-08-26 | 昆明理工大学 | Dearsenization method for sulfurous iron ore slag |
| CN101554613A (en) * | 2009-05-19 | 2009-10-14 | 房志强 | Method for recycling industrial waste sulfate slag |
| CN101733407A (en) * | 2010-01-29 | 2010-06-16 | 中国地质大学（武汉） | Method for selecting iron from low-grade sulfate slag |
| CN102534187A (en) * | 2011-12-12 | 2012-07-04 | 师兆忠 | Method for treating pyrite cinder by combining acidic leaching with alkaline dissolving |
Non-Patent Citations (2)
| Title |
|---|
| 张广伟等: "利用含砷硫酸渣生产铁精矿的实验研究", 《矿业研究与开发》, vol. 33, no. 1, 28 February 2013 (2013-02-28) * |
| 李亚军: "硫铁矿烧渣除硫除砷工艺研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, no. 2, 15 February 2012 (2012-02-15) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152669A (en) * | 2014-08-21 | 2014-11-19 | 武汉中地西能科技有限公司 | Method for extracting high-grade powdered iron from low-grade sulfuric-acid residue |
| CN104789753A (en) * | 2015-02-11 | 2015-07-22 | 安徽盖娅环保科技有限公司 | New sulfur acid residue desulphurization method |
| CN106435171A (en) * | 2016-11-24 | 2017-02-22 | 攀枝花市徳铭再生资源开发有限公司 | Method for producing fine iron powder through sulfuric-acid residues |
| CN106555052A (en) * | 2016-11-24 | 2017-04-05 | 攀枝花市徳铭再生资源开发有限公司 | The method that sulfate slag reclaims iron ore concentrate |
| CN106636612A (en) * | 2016-11-24 | 2017-05-10 | 攀枝花市徳铭再生资源开发有限公司 | Method for producing powdered iron from sulfuric-acid residue |
| CN107099672A (en) * | 2017-05-16 | 2017-08-29 | 中国恩菲工程技术有限公司 | The recovery method of the fume from steel making containing zinc |
| CN107099672B (en) * | 2017-05-16 | 2019-02-26 | 中国恩菲工程技术有限公司 | The recovery method of the fume from steel making containing zinc |
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