CN101831539B - Method for producing artificial rich iron ore from copper smelting waste slag by using new sintering technology - Google Patents
Method for producing artificial rich iron ore from copper smelting waste slag by using new sintering technology Download PDFInfo
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- CN101831539B CN101831539B CN2010101778426A CN201010177842A CN101831539B CN 101831539 B CN101831539 B CN 101831539B CN 2010101778426 A CN2010101778426 A CN 2010101778426A CN 201010177842 A CN201010177842 A CN 201010177842A CN 101831539 B CN101831539 B CN 101831539B
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Abstract
The invention relates to a method for producing artificial rich iron ore for ironmaking from copper smelting waste slag, in particular to a method for producing the artificial rich iron ore from the copper smelting waste slag by using sintering technology. The method is characterized by comprising the following steps: a, pouring copper smelting waste slag at 1100-1300 DEG C into a hot slag ladle, shaking the ladle for 5-15 minutes, and standing for 10-20 minutes; b, transferring the rest of the waste slag in the hot slag ladle into another hot slag ladle; c, adding a ferrous raw material into the hot slag ladle filled with most of the waste slag, wherein the ferrous raw material accounts for 30-100 wt% of the waste slag in the hot slag ladle; and d, pouring out the waste slag with the ferrous raw material, and cooling. By fully utilizing the sensible heat produced by the emission of the copper smelting waste slag, the method removes the impurities to purify the waste slag, recycles the ferrous metals and saves the heat energy, thereby obtaining the novel artificial rich iron ore product.
Description
Technical field
The present invention relates to a kind ofly, especially utilize copper smelting waste slag to pass through the method that sintering process is produced artificial high-grad iron ore deposit with the get rich method of iron ore of copper smelting waste slag production ironmaking personnel selection.
Background technology
Copper smelting waste slag is a kind of solid slag of discharging during the Metal smelting of non-ferrous metallurgical enterprise copper is produced, a kind of iron and steel resource of uniqueness especially.Not only contain a large amount of ferrous metals, silicon-dioxide, quicklime, Natural manganese dioxide in the copper smelting waste slag; And also have metal such as little copper, nickel, cobalt, lead, zinc and non-metallic element sulphur etc.; The copper smelting waste slag of enormous amount is except that additive replacement iron ore is made in a small amount of confession cement mill at present, and all the other are all fully developed.Temperature was at 1100 ℃-1300 ℃ when the pyrogenic process copper smelting waste slag discharged in addition, and the sensible heat after the slag discharging is not utilized effectively, and has caused the great amount of heat energy waste.
At present, from copper smelting waste slag, reclaiming metal has several different methods, and wherein commonly used have the hot method of charcoal, fuming process, electric dilution method, a flotation process etc., utilizes copper smelting waste slag to reclaim ferrous metal, and also existing abroad proven technique technology is used for reference.But, to end up till now, these technical matters processing costs are generally too high, cause its economic benefit too poor, and especially aspect saving energy and reduce the cost, various economic targets are very poor, and therefore, these technology seldom are employed so far.
Iron and steel enterprise is the energy consumption rich and influential family, with traditional SINTERING PRODUCTION technology powdered iron ore carried out agglomeration and become an indispensable important production process in the ferrous metallurgy industry, and specifically be with various powdery iron-containing raw materials; Allocate an amount of fuel and flux into, add an amount of water, on agglomerating plant, make material that a series of physicochemical change take place through mixing with after making ball; Mineral powder granular is cohered caked process; Wherein the sintering circuit energy consumption accounts for 10% in ton steel comprehensive energy consumption, is only second to the ironmaking operation, therefore; Reduce the sintering circuit energy consumption, can effectively reduce a ton steel comprehensive energy consumption.
Summary of the invention
The purpose of this invention is to provide a kind of copper smelting waste slag that utilizes and pass through the method that sintering process is produced artificial high-grad iron ore deposit; Can a kind of approach that effectively utilizes be provided to copper smelting waste slag; The sensible heat that can also make full use of copper smelting waste slag replaces conventional sintering fuel to carry out sintering process; Thereby effectively practiced thrift the required energy consumption of sintering process, also avoided environmental pollution.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of copper smelting waste slag that utilizes passes through the method that sintering process is produced artificial high-grad iron ore deposit, it is characterized in that, comprises the steps:
A, temperature is poured in the warm sludge bag at 1100-1300 ℃ copper smelting waste slag, through leaving standstill 10-20 minute after 5-15 minute the shaking ladle vibration;
B, the showy slag that the waste the superiors in the warm sludge bag are accounted for waste TV 3-8% are partly removed, and keep the bottom slag part that waste orlop in the warm sludge bag accounts for waste TV 3-8%, and the rest part of waste in the warm sludge bag is transferred in another warm sludge bag;
C, in the above-mentioned warm sludge bag that most of waste is housed, add iron-bearing material, the consumption of iron-bearing material is the 30-100% of waste gross weight in this warm sludge bag, stirs afterwards, and iron-bearing material is evenly melted in waste;
D, the waste that will add iron-bearing material are again poured out postcooling and are got final product.
Thereby remainder added recycling in the waste among the step a after the bottom slag that wherein the warm sludge bag orlop that keeps among the step b is accounted for waste TV 3-8% partly carried out the secondary ore dressing.
Utilize its heat energy that iron-bearing material for use is carried out heating, drying to reduce moisture content and to increase temperature when wherein waste cools off in the steps d.
Wherein the iron-holder of iron-bearing material is 60-65%, and iron-bearing material is at least a in the smart powder of iron, iron scale and the high-grad iron ore deposit powder.
The waste that wherein will add iron-bearing material in the steps d pour into the mould internal cooling, or cylinder iron machine carry out broken again after the ingot bar cooling, screening and finishing can be used.
The product of the inventive method can directly be used for iron-smelting raw material, the irony material in producing as iron alloy, and alternative agglomerate, oxide pellet, steel cuttings, iron scale, production cost is lower, and more energy-conserving and environment-protective are a kind of new ferriferous raw materials;
Sensible heat when the inventive method has made full use of the copper smelting waste slag discharging to the waste purification and impurity removal, reclaims ferrous metal, practices thrift heat energy; Thereby obtained a kind of novel artificial high-grad iron ore deposit product, the copper smelting waste slag of serious environment pollution has been turned waste into wealth, turned harm into good; Fully utilize resource to greatest extent, not only met national industrial policies and save energy; Reduce and pollute, for energy-saving and emission-reduction, developing a circular economy has very big meaning.Through experiment showed, that the enriched ore ferrous grade that the inventive method is produced can reach 49-55%, the requirement of National standard; Because wherein contain the little copper metallic element and ordinary sinter ore deposit, acid pellet are compared, this product physical strength is high; Anti-knocking property are good; Good permeability is particularly suitable for the raw material as ironmaking, stainless steel and weathering steel, and the working of a furnace of blast furnace, electric furnace is more smooth and easy, stable when using this raw material.Simultaneously, also can be used as the ferriferous raw material in the iron alloy production, result of use is better, more energy-conservation than effects such as ordinary oxygen pellet, steel cuttings, iron scales in ferrosilicon, ferromanganese, ferrochrome production, cost is lower.
Embodiment
The inventive method still is in molten state after being particularly suitable for smelting, and typical temperature is at 1100-1300 ℃ copper smelting waste slag, if cooled waste then need reheat, its economic benefit obviously can obviously descend.After the showy slag that the warm sludge bag the superiors account for waste TV 3-8% among the step b is in addition partly removed, can supply the cement mill to make additive and replace iron ore to use.
Because the sintering circuit energy consumption accounts for 10% in ton steel comprehensive energy consumption, the inventive method has been saved this part energy consumption fully, the environmental pollutions such as flue dust of also having avoided this part operation to cause simultaneously.
In the inventive method iron-bearing material is added waste, the ferrous metasilicate alkalescence of molten state is increased relatively, acidity weakens, thus transition is a kind of people of hot-melting type (iron) mineral products of getting rich.
The iron-bearing material iron-holder of using in the inventive method is 60-65%; Iron-bearing material is at least a in the smart powder of iron, iron scale and the high-grad iron ore deposit powder; Following embodiment provides the example of independent use above-mentioned raw materials respectively; But through evidence, any two kinds or whole three kinds in the above-mentioned raw materials are mixed with arbitrary proportion and also to be suitable for.
Embodiment 1
A, temperature is poured in the warm sludge bag at 1200 ℃ copper smelting waste slag, through leaving standstill 15 minutes after 10 minutes the shaking ladles vibration;
B, the showy slag that the warm sludge bag the superiors are accounted for waste TV 5% are partly removed, and keep the bottom slag part that warm sludge bag orlop accounts for waste TV 5%, and rest part in the warm sludge bag is transferred in another warm sludge bag;
C, in the above-mentioned warm sludge bag that most of waste is housed, to add iron-holder be 62% the smart powder of iron, the consumption of the smart powder of iron be in this warm sludge bag the waste gross weight 50%, stir afterwards, iron essence powder is evenly melted in waste;
That d, the waste that will add the smart powder of iron are again poured into is broken again after the mould internal cooling, screening and finishing promptly can be used as the qualified artificial high-grad iron ore deposit of finished product and use.
Iron-bearing material adopts the smart powder of iron in the present embodiment; Can the bottom slag that the warm sludge bag orlop that keep among the step b accounts for waste TV 5% partly be carried out the secondary ore dressing in addition; Obtain wherein more valuable metal; Reuse in the waste among the remainder adding step a; If this part noble metal content more also can be abandoned certainly, can also recycle its heat energy that distributes when waste cools off in steps d iron-bearing material for use is carried out heating, drying to reduce moisture content and to increase temperature, the cold water of can also heating is hot water etc.
Embodiment 2
A, temperature is poured in the warm sludge bag at 1100 ℃ copper smelting waste slag, through leaving standstill 10 minutes after 5 minutes the shaking ladles vibration;
B, the showy slag that the warm sludge bag the superiors are accounted for waste TV 3% are partly removed, and keep the bottom slag part that warm sludge bag orlop accounts for waste TV 3%, and rest part in the warm sludge bag is transferred in another warm sludge bag;
C, in the above-mentioned warm sludge bag that most of waste is housed, to add iron-holder be 60% iron scale, and the consumption of iron scale be 30% of the interior waste gross weight of this warm sludge bag, stirs afterwards, and iron scale is evenly melted in waste;
D, will add iron scale again waste cylinder iron machine carry out broken again after the ingot bar cooling, screening and finishing and promptly can be used as the qualified artificial high-grad iron ore deposit of finished product and use.
Iron-bearing material adopts iron scale in the present embodiment, can the bottom slag that the warm sludge bag orlop that keep among the step b accounts for waste TV 3% partly be carried out the secondary ore dressing in addition, and rest part is identical with embodiment 1.
Embodiment 3
A, temperature is poured in the warm sludge bag at 1300 ℃ copper smelting waste slag, through leaving standstill 20 minutes after 15 minutes the shaking ladles vibration;
B, the showy slag that the warm sludge bag the superiors are accounted for waste TV 8% are partly removed, and keep the bottom slag part that warm sludge bag orlop accounts for waste TV 8%, and rest part in the warm sludge bag is transferred in another warm sludge bag;
C, in the above-mentioned warm sludge bag that most of waste is housed, to add iron-holder be 65% high-grad iron ore deposit powder, and the consumption of high-grad iron ore deposit powder be 100% of the interior waste gross weight of this warm sludge bag, stirs afterwards, and the high-grad iron ore deposit powder is evenly melted in waste;
D, will add the high-grad iron ore deposit powder again waste cylinder iron machine carry out broken again after the ingot bar cooling, screening and finishing and promptly can be used as the qualified artificial high-grad iron ore deposit of finished product and use.
Iron-bearing material adopts the high-grad iron ore deposit powder in the present embodiment, can the bottom slag that the warm sludge bag orlop that keep among the step b accounts for waste TV 8% partly be carried out the secondary ore dressing in addition, and rest part is identical with embodiment 1.
Claims (2)
1. one kind is utilized copper smelting waste slag to pass through the method that sintering process is produced artificial high-grad iron ore deposit, it is characterized in that, comprises the steps:
A, temperature is poured in the warm sludge bag at 1100-1300 ℃ copper smelting waste slag, through leaving standstill 10-20 minute after 5-15 minute the shaking ladle vibration;
B, the floating slag that the waste the superiors in the warm sludge bag are accounted for waste TV 3-8% are partly removed, and keep the bottom slag part that waste orlop in the warm sludge bag accounts for waste TV 3-8%, and the rest part of waste in the warm sludge bag is transferred in another warm sludge bag; Thereby remainder added recycling in the waste among the step a after the bottom slag that the warm sludge bag orlop that keeps among the step b accounts for waste TV 3-8% partly carried out the secondary ore dressing;
C, in the above-mentioned warm sludge bag that most of waste is housed, add iron-bearing material, the consumption of iron-bearing material is the 30-100% of waste gross weight in this warm sludge bag, stirs afterwards, and iron-bearing material is evenly melted in waste; Wherein the iron-holder of iron-bearing material is 60-65%, and iron-bearing material is at least a in the smart powder of iron, iron scale and the high-grad iron ore deposit powder;
D, the waste that will add iron-bearing material are again poured out postcooling and are got final product; Utilize its heat energy that iron-bearing material for use is carried out heating, drying to reduce moisture content and to increase temperature when wherein waste cools off in the steps d.
2. the copper smelting waste slag that utilizes as claimed in claim 1 passes through the method that sintering process is produced artificial high-grad iron ore deposit, it is characterized in that: fragmentation, screening and finishing can be used again after the waste that wherein will add iron-bearing material in the steps d was poured the mould internal cooling into, perhaps cylinder iron machine carries out the ingot bar cooling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101778426A CN101831539B (en) | 2010-05-20 | 2010-05-20 | Method for producing artificial rich iron ore from copper smelting waste slag by using new sintering technology |
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| CN2010101778426A CN101831539B (en) | 2010-05-20 | 2010-05-20 | Method for producing artificial rich iron ore from copper smelting waste slag by using new sintering technology |
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| CN101831539A CN101831539A (en) | 2010-09-15 |
| CN101831539B true CN101831539B (en) | 2012-11-28 |
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| CN103667684B (en) * | 2013-12-24 | 2016-04-20 | 云南文山斗南锰业股份有限公司 | Ore powder becomes block method |
| CN107385203B (en) * | 2017-08-25 | 2019-01-08 | 鞍钢股份有限公司 | A method of sinter is prepared using hot vessel slag for Binder Phase |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101545042A (en) * | 2009-02-09 | 2009-09-30 | 牛庆君 | Method for producing microalloy ferro-silicon by using a ferrous metasilicate electric stove integral deoxidation and reduction |
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| JP3529317B2 (en) * | 2000-03-03 | 2004-05-24 | 日鉱金属株式会社 | Operating method of copper smelting furnace |
| JP4112523B2 (en) * | 2004-05-20 | 2008-07-02 | 日鉱金属株式会社 | Dissolution treatment method of hydrous fine iron-containing material in copper PS converter |
| JP4350711B2 (en) * | 2006-02-03 | 2009-10-21 | 日鉱金属株式会社 | Industrial waste melting process |
| CN101831549B (en) * | 2010-05-20 | 2012-05-02 | 牛庆君 | Method for producing artificial rich iron ore from nickel, copper and cobalt smelting waste slag by utilizing new sintering process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101545042A (en) * | 2009-02-09 | 2009-09-30 | 牛庆君 | Method for producing microalloy ferro-silicon by using a ferrous metasilicate electric stove integral deoxidation and reduction |
Non-Patent Citations (5)
| Title |
|---|
| JP特开2001-247922A 2001.09.14 |
| JP特开2005-330541A 2005.12.02 |
| JP特开2007-204826A 2007.08.16 |
| 张林楠等.铜渣的处理与资源化.《矿产综合利用》.2005,(第5期),22-26. * |
| 李磊等.铜渣综合利用的研究进展.《冶金能源》.2009,第28卷(第1期),44-48. * |
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