CN110106347A - A kind of Copper making waste residue is applied to the processing method of sintering - Google Patents

A kind of Copper making waste residue is applied to the processing method of sintering Download PDF

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CN110106347A
CN110106347A CN201910407318.4A CN201910407318A CN110106347A CN 110106347 A CN110106347 A CN 110106347A CN 201910407318 A CN201910407318 A CN 201910407318A CN 110106347 A CN110106347 A CN 110106347A
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waste residue
making waste
sintering
sintered
copper making
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CN110106347B (en
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郭正启
朱德庆
潘建
李启厚
杨聪聪
李紫云
梁钟仁
李思唯
田宏宇
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Central South University
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0056—Scrap treating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses the processing methods that a kind of Copper making waste residue is applied to sintering, comprising the following steps: it is 100% less than 5mm, 10% particle less than 1mm, Copper making waste residue powder that Copper making waste residue, which is broken into granularity,；Copper making waste residue powder is subjected to ingredient with lateritic nickel ore and is mixed, Blended Ore Powder is obtained；It by Blended Ore Powder and solid fuel, composite fluxing agent and returns mine and carries out ingredient, be then uniformly mixed, obtain mixture to be sintered；And mixture to be sintered is mixed in trommel mixer and is pelletized, pellet to be sintered cloth, igniting, sintering and cooling in sintering machine by pellet to be sintered is obtained, primary sinter is obtained；Primary sinter is subjected to cooling, broken and screening, obtains finished product sinter.Method of the invention can not only recycle iron and copper in Copper making waste residue, the problem for avoiding copper, iron separation difficult, can also reduce the discharge of solid waste, save a large amount of fixed-end forces expense, production cost is effectively reduced, achievees the purpose that sustainable development.

Description

A kind of Copper making waste residue is applied to the processing method of sintering
Technical field
The present invention relates to metallurgy and material science and technology fields, it particularly relates to which a kind of Copper making waste residue is applied to burn The processing method of knot.
Background technique
There are about 80% or more copper in the world is produced by pyrometallurgical smelting, is usually produced 1 ton of matte and is about generated 2.2 tons of copper Slag.Currently, the annual copper smelting slag quantum of output in China is at 15,000,000 tons or more；And the metallurgical slag stored up is 1.7 hundred million tons or more accumulative.Copper Metallurgical slag stockpiling does not only take up a large amount of soils, causes serious heavy metal secondary pollution, and waste the precious resources such as copper, iron.
For a long time, China's iron ore and copper concentrate resource critical shortage are up to 65% to the interdependency of import resources respectively With 80%.For the situation for alleviating shortage of resources, the left side of copper 0.3% and 20% is dropped to respectively to the mining grade of copper mine and iron ore at present The right side, but its high production cost, carrying capacity of environment are big.Therefore, cupric 0.6~1.0%, iron content 40% or so copper smelting slag be to have The secondary resource of substantial worth.If can solve the critical issue of its copper and iron high efficiente callback, clean utilization, to develop recycling copper Theory support is provided with the new process of iron, by 15,000,000 tons of the quantum of output calculating of annual copper smelting slag of the whole nation at present, can be produced per year simultaneously 300,000 tons and 8,700,000 tons of iron ore concentrate or more of copper concentrate, annual value of production is at 10,000,000,000 yuan or more.This will be short to China's copper, iron resource is alleviated Status is lacked, heavy metal secondary pollution is eliminated, improving Business Economic Benefit has very major and immediate significance, and research achievement It is had broad popularization and application prospect in terms of the comprehensive utilization of non-ferrous metal iron content metallurgical slag.
In general, the main chemical compositions of Copper making waste residue are Cu 0.6~4%, Fe 35~45%, SiO216~38%, S 0.5~8%.Main mineral constituent is fayalite and copper matte regulus, and the nothing of partial oxidation copper, magnetic iron ore and some gangues composition is fixed Shape vitreum.Copper and iron mineral formation plaque-like is embedding to be distributed in fayalite matrix, or with the mutually embedding cloth symbiosis of several copper minerals.Copper and iron Mineral intergrowth relationship is complicated, and disseminated grain size is fine.Therefore, the difficulty of copper and iron separation and recycling is very big.
Utilization for Copper making waste residue, what is be most widely used at present is slow cooling-ore grinding.High temperature copper ashes passes through slowly cold But, promote copper particle aggregation and grow up；Then, by fine grinding, so that copper particle and other gangue minerals dissociate；Further basis The difference of oxide ore and sulphide ore surface hydrophilicity takes corresponding collecting agent, foaming agent and inhibitor, it is higher to floatingly select grade Copper concentrate, and raw material of the flotation tailings as cement.This method can effectively recycle Copper making Copper Slag, but a large amount of Iron resource be not utilized.In addition, copper ashes can be effectively treated in direct-reduction-magnetic separation process, valuable gold therein is recycled Belong to, but due in copper ashes iron exists in the form of olivine, copper with vulcanize copper segregation cause reproducibility it is poor, restore required temperature Height, energy consumption is high；Modification-magnetic separation technology can recycle ferro element in copper ashes, but silicon, aluminium content are high in product, of poor quality.
The lateritic nickel ore in China is mainly distributed on the member of the meeting reason in Sichuan Province, the Yuanjiang River in Yunnan Province and Mojiang and Qinghai Province The areas such as tor.Lateritic nickel ore reserves account for about the 9.6% of national nickel resources reserves, and nickel sulfide ore accounts for national nickel resources and protects There is the 86% of reserves.Since domestic lateritic nickel ore reserves are relatively fewer, China is a large amount of from Philippine and India's West Asia import every year Lateritic nickel ore, contraposition interdependency is high.Currently, China takes pyrometallurgical smelting ferronickel more universal, it is roughly divided into sintering-blast furnace Method, nickel and low nickel product in production；Rotary kiln electric furnace process (RKEF method), produces high ferronickel.Due to high-grade lateritic nickel ore resource It is most of to be controlled by Western power, and price is expensive, and most of ferronickel manufacturers, China can only use middle-low grade red Native nickel ore resource.But since low-grade laterite nickel ore mechanical water and crystal water content are high, scaling loss is big, and sintering velocity is fast, sinter High temperature hold time is short, and sintering end point temperature is low, and charge level cooling velocity is fast, causes sintering minerogentic condition sharply to deteriorate, sinter Intensity is far below common iron ore sintering mine.Therefore, it is necessary to develop skill, lateritic nickel ore Sintering Problem is solved.
Summary of the invention
The object of the present invention is to provide one kind can synthetical recovery Determination of multiple metal elements, it is at low cost and environmentally friendly to use Copper making Waste residue is applied to the processing method of sintering.
This Copper making waste residue of the present invention is applied to the processing method of sintering, comprising the following steps:
S1, Copper making waste residue is broken into granularity for 100% less than 5mm, 10% particle less than 1mm obtains Copper making Waste residue powder；
S2, Copper making waste residue powder in S1 and lateritic nickel ore are subjected to ingredient and mixed, obtain Blended Ore Powder；
S3, it by Blended Ore Powder in S2 and solid fuel, composite fluxing agent and returns mine and carries out ingredient, be then uniformly mixed, obtain Mixture to be sintered；And mixture to be sintered is mixed in trommel mixer and is pelletized, obtain pellet to be sintered；
S4, cloth, igniting, sintering and cooling in sintering machine by pellet to be sintered in S3, obtain primary sinter；
S5, sinter primary in S4 is subjected to cooling, broken and screening, obtains finished product sinter.
In the S1 step, the broken use double-roll crusher is crushed；The Copper making waste residue mainly include TFe (total iron), the FeO of the Cu of 0.8wt%~1.5wt%, 35wt%~45wt% of following component 35wt%~45wt%, The SiO of 30wt%~40wt%2。
During the S2 is rapid, the lateritic nickel ore is limonite type lateritic nickel ore, specifically includes that 45wt%~55wt%'s The SiO of the MgO of the Ni of TFe, 0.7wt%~1.0wt%, 1wt%~3wt%, 3wt%~6wt%2；LOI value (loss on ignition) is 11wt%~16wt%.
In the S2 step, Copper making waste residue powder and lateritic nickel ore mixing mass ratio are 1:(1.5~4).
In the S3 step, the ingredient is 100% according to mass percent, includes 45wt%~50wt% mixed Even miberal powder, 7.5wt%~8.5wt% solid fuel, 11wt%~18wt% composite fluxing agent, surplus are to return mine；The solid combustion Material is coke powder or coal dust；The composite fluxing agent is made of quick lime, dolomite and lime stone, and the mass ratio of three is (4~6): (1.5~3): (2.5~11.5).
In the S3 step, pelletize specifically includes the following steps: to mixture spray water to be sintered and being mixed and being disappeared After change, with trommel mixer plasmid, pellet to be sintered is obtained.
The Granulation time is 5min；Spray water guarantees pellet moisture content 15wt~16wt% to be sintered；Mixing machine Revolving speed 30rmin-1, pack completeness 20%.
In the S4 step, sintering step are as follows: enter grate-layer material in sintered cup middle berth, then pellet to be sintered is packed into and is sintered In cup, cloth is carried out, cloth height is 700~1000mm；It is lighted a fire using natural gas；Again in the suction pressure of 9~12KPa Under be sintered, when sintered discharge gas temperature rise to when maximum temperature is begun to decline by suction pressure be lowered to 4~6KPa carry out It is cooling, sinter cake is drawn off after cooling 3~6min, obtains primary sinter.
The firing temperature is 1150~1250 DEG C, and light a fire negative pressure 4kPa~6kPa, and the duration of ignition is 1min~3min.
In the S5 step, primary sinter is cooled to room temperature, and is then crushed to using jaw crusher less than 40mm After sieve, obtain being less than 5mm grade as returning mine, be greater than 5mm as finished product sinter, into blast furnace process.
The principle of the present invention: it is mainly incorporated in lateritic nickel ore sintering using copper smelting slag in the present invention, in blast furnace high temperature It restores and melts and divide process, form Fe-Ni-Cu ternary alloy three-partalloy, avoid the difficult problem of copper and iron separation, metal recovery can be effectively improved Rate；And due to copper smelting slag, as a kind of coloured slag, FeO content is high, high temperature soft heat characteristic is good, and liquid phase generative capacity is strong, Lateritic nickel ore sintering process liquid phase output can be improved, reduce liquid phase viscosity, the microstructure of mesoporous heavy wall is promoted to be formed, from And sinter strength is improved, solve that single laterite fusing point is high, scaling loss is big, sintering process liquid phase generates difficulty causes sinter macropore thin The problem that wall tissue is more and intensity is low.
Beneficial effects of the present invention: 1) this Copper making waste residue of the present invention is applied to the processing method of sintering, is by copper smelting Refining waste residue and lateritic nickel ore (with after other auxiliary agents) technique that is sintered, cupric, nickel, iron can be produced by being finally obtained Composite sinter can provide raw material for blast furnace process cupric, ferronickel water；And copper, ferronickel water, cathode copper, electrolysis can be replaced Nickel produces cupric stainless steel, shortens process flow, saves production cost, and blast furnace slag then can original by water quenching as building materials Material.2) difficult since copper, iron mineral disseminated grain size are thin, symbiosis closely causes conventional method to separate and recover in copper smelting slag, and this hair It is bright to be incorporated in lateritic nickel ore sintering using copper smelting slag, divide process with molten in blast furnace high temperature reduction, forms the conjunction of Fe-Ni-Cu ternary Gold avoids the difficult problem of copper and iron separation, can effectively improve metal recovery rate.3) copper smelting slag used in the present invention can be used as A kind of coloured slag, and its FeO content is high, high temperature soft heat characteristic is good, liquid phase generative capacity is strong, and lateritic nickel ore mixed sintering, To improve lateritic nickel ore sintering process liquid phase output, liquid phase viscosity is reduced, the microstructure of mesoporous heavy wall is promoted to be formed, thus Sinter strength is improved, solves that single laterite fusing point is high, scaling loss is big, sintering process liquid phase generates difficulty leads to sinter macropore thin-walled The problem that tissue is more and intensity is low.4) also high using FeO content in copper smelting slag in method of the invention, it is aoxidized in sintering process The amount of heat of generation improves sintering process material layer temperature, reduces sintering solid energy consumption, solve the sintering of single lateritic nickel ore due to Crystal water content height leads to the problem that energy consumption is high, at high cost.5) present invention is blended due to being copper smelting slag and lateritic nickel ore Sintering, thus a kind of composite fluxing agent has been prepared, after the quick lime in composite fluxing agent meets water digestion, formed Ca (OH)2Colloid, ratio Surface area is high, activity is big, and surface wettability is good, can Intensified support, improve the gas permeability of sintering feed, improve sintering using system Number；Lime stone and dolomite in composite fluxing agent can orient basicity and MgO/SiO in regulation sinter2Than reducing slag system and being formed Liquidus temperature improves the mobility of liquid phase in sintering, to improve sinter strength.6) method of the invention can not only recycle Using iron and copper in Copper making waste residue, the problem for avoiding copper, iron separation difficult can also reduce the discharge of solid waste, A large amount of fixed-end forces expense is saved, production cost is effectively reduced, achievees the purpose that sustainable development.
Detailed description of the invention
Process flow chart Fig. 1 of the invention.
Specific embodiment
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.The process flow of the embodiment of the present invention, as shown in Figure 1, the specific steps are as follows:
Embodiment 1
(1) Copper making waste residue is broken: take Copper making waste residue, the TFe (total iron) that main chemical is 39.85%, The SiO of the FeO of the Cu of 0.83wt%, 43.7wt%, 30.81wt%2.Copper making waste residue is broken into granularity to be less than for 100% 5mm, 10% is less than the particle of 1mm, obtains Copper making waste residue powder.
(2) ingredient: by the TFe containing 47.4wt%, the SiO of the MgO of the Ni of 0.90wt%, 1.23wt%, 4.83wt%2； The lateritic nickel ore (37.6wt%) and Copper making waste residue powder (9.4wt%) that LOI value is 13.1wt% are mixed according to the ratio of 8:2 Afterwards, it then returns mine with 30wt%, the mixing of 8.0wt% coal dust, 5wt% quick lime, 2.5wt% dolomite and 7.5wt% lime stone, Obtain mixture to be sintered.
(3) it pelletizes: water is added in mixture to be sintered, the moisture content for adjusting mixture to be sintered is 17.0%.? It is mixed in trommel mixer, controls mixing machine revolving speed 30rmin-1, pack completeness 20%, Granulation time 5min obtains grain to be sintered Expect, it is 85wt% that granularity, which is greater than 0.5mm, in pellet to be sintered, and particle of the partial size greater than 1mm is 75wt%.
(4) it is sintered: the pellet to be sintered of step (3) being subjected to cloth (wherein bed depth is 700mm), then uses day Right gas igniting (wherein firing temperature is 1200 DEG C, duration of ignition 2min, and igniting negative pressure is 5KPa), after igniting, will burn Knot negative pressure, which is modulated to 10KPa, carries out down draft sintering, after down draft sintering is complete, carries out exhausting cooling (cooling negative pressure 5kPa, cooling time 5min), after cooling, drawing off sinter cake is primary sinter.
(5) cooling, broken, screening: primary sinter is cooled to room temperature, is then crushed and is sieved, is greater than The finished product sinter of 5mm and powder of returning mine less than 5mm.
Gained finished product sintered ore rotary drum strength 50.5%, usage factor 1.02tm-2·h-1, solid fuel consumption 135.3Kg/ t。
Embodiment 2
(1) Copper making waste residue is broken: take Copper making waste residue, the TFe that main chemical is 39.85%, The SiO of the FeO of the Cu of 0.83wt%, 43.7wt%, 30.81wt%2.Copper making waste residue is broken into granularity to be less than for 100% 5mm, 10% is less than the particle of 1mm, obtains Copper making waste residue powder.
(2) ingredient: by the TFe containing 47.4wt%, the SiO of the MgO of the Ni of 0.90wt%, 1.23wt%, 4.83wt%2； Ratio of the lateritic nickel ore (32.55wt%) that LOI value is 13.1wt% with Copper making waste residue powder (13.95wt%) according to 7:3 It after mixing, then returns mine with 30wt%, the mixing of 7.5wt% coal dust, 5 quick limes, 2.5wt% dolomite and 8.5wt% lime stone, Obtain mixture to be sintered.
(3) it pelletizes: water is added in mixture to be sintered, the moisture content for adjusting mixture to be sintered is 16.0%.? It is mixed in trommel mixer, controls mixing machine revolving speed 30rmin-1, pack completeness 20%, Granulation time 5min obtains grain to be sintered Expect, it is 85wt% that granularity, which is greater than 0.5mm, in pellet to be sintered, and particle of the partial size greater than 1mm is 75wt%.
(4) it is sintered: the pellet to be sintered of step (3) being subjected to cloth (wherein bed depth is 700mm), then uses day Right gas igniting (wherein, firing temperature is 1200 DEG C, duration of ignition 2min, and igniting negative pressure is 5KPa), after igniting, will burn Knot negative pressure, which is modulated to 10KPa, carries out down draft sintering, and cooling (the wherein cooling negative pressure 5kPa, when cooling of exhausting is carried out after sintering Between 5min)；After cooling, sinter cake is drawn off, as primary sinter.
(5) cooling, broken, screening: primary sinter is cooled to room temperature, is then crushed and is sieved, is greater than The finished product sinter of 5mm and powder of returning mine less than 5mm.
Gained finished product sintered ore rotary drum strength 54.3%, usage factor 1.11tm-2·h-1, solid fuel consumption 121.2Kg/ t。
Embodiment 3
(1) Copper making waste residue is broken: take Copper making waste residue, the TFe that main chemical is 39.85%, The SiO of the FeO of the Cu of 0.83wt%, 43.7wt%, 30.81wt%2.Copper making waste residue is broken into granularity to be less than for 100% 5mm, 10% is less than the particle of 1mm, obtains Copper making waste residue powder.
(2) ingredient: by the TFe containing 47.4wt%, the SiO of the MgO of the Ni of 0.90wt%, 1.23wt%, 4.83wt%2； The lateritic nickel ore (27.6wt%) and Copper making waste residue powder (18.4wt%) that LOI value is 13.1wt% are mixed according to the ratio of 6:4 It after even, then returns mine with 30wt%, 7.5wt% coal dust, 5wt% quick lime, 2.0wt% dolomite and 9.5wt% lime stone mix It is even, obtain mixture to be sintered.
(3) it pelletizes: water is added in mixture to be sintered, the moisture for adjusting mixture to be sintered is 16.0%, is then existed It is mixed in trommel mixer, controls mixing machine revolving speed 30rmin-1, pack completeness 20%, Granulation time 5min obtains grain to be sintered Expect, it is 85wt% that granularity, which is greater than 0.5mm, in pellet to be sintered, and particle of the partial size greater than 1mm is 75wt%.
(4) it is sintered: the pellet to be sintered of step (3) being subjected to cloth (wherein bed depth is 700mm), then uses day Right gas igniting (wherein firing temperature is 1200 DEG C, duration of ignition 2min, and igniting negative pressure is 5KPa), after igniting, will burn Knot negative pressure, which is modulated to 10KPa, carries out down draft sintering, and cooling (the wherein cooling negative pressure 5kPa, when cooling of exhausting is carried out after sintering Between 5min), after cooling, sinter cake is drawn off as primary sinter.
(5) cooling, broken, screening: primary sinter being cooled to room temperature, is crushed and is sieved, and is obtained greater than 5mm's Finished product sinter and powder of returning mine less than 5mm.
Gained finished product sintered ore rotary drum strength 56.2%, usage factor 1.21tm-2·h-1, solid fuel consumption 115.4Kg/ t。
Compared by embodiment 1,2 and 3 it is found that as copper smelting slag ratio from 20% increases to 40%, the rotary drum of sinter Intensity is improved by 50.5% to 56.2%, is sintered usage factor by 1.02tm-2·h-1Increase to 1.21tm-2·h-1, improve Nearly 20%；And solid fuel consumption is reduced to 115.4Kg/t by 135.3Kg/t.Therefore, it was confirmed that the supplying sintering of Copper making waste residue can Improve the sintering character of lateritic nickel ore, improve sinter strength, reduces sintering solid energy consumption.
Embodiment 4
(1) Copper making waste residue is broken: take Copper making waste residue, the TFe that main chemical is 42.12%, The SiO of the FeO of the Cu of 1.32wt%, 44.7wt%, 332.24wt%2.Copper making waste residue is broken into granularity to be less than for 100% 5mm, 10% is less than the particle of 1mm, obtains Copper making waste residue powder.
(2) ingredient: by the TFe containing 51.13wt%, the SiO of the MgO of the Ni of 1.02wt%, 1.19wt%, 4.21wt%2； The lateritic nickel ore (27.9wt%) and Copper making waste residue powder (18.6wt%) that LOI value is 12.3wt% are mixed according to the ratio of 6:4 It after even, then returns mine, the mixing of 7.5wt% coal dust, 5 quick limes, 2.5wt% dolomite and 8.5wt% lime stone, obtains with 30wt% To mixture to be sintered；
(3) it pelletizes: water is added in mixture to be sintered, the moisture for adjusting mixture to be sintered is 16.0%.In cylinder It is mixed in mixing machine, controls mixing machine revolving speed 30rmin-1, pack completeness 20%, Granulation time 5min obtains pellet to be sintered, It is 85wt% that granularity, which is greater than 0.5mm, in pellet to be sintered, and particle of the partial size greater than 1mm is 75wt%.
(4) it is sintered: the pellet to be sintered of step (3) being subjected to cloth (wherein bed depth is 700mm), then uses day Right gas igniting (wherein firing temperature is 1250 DEG C, duration of ignition 2.5min, and igniting negative pressure is 5KPa), will burn after igniting Knot negative pressure, which is modulated to 10KPa, carries out down draft sintering, and cooling (the wherein cooling negative pressure 5kPa, when cooling of exhausting is carried out after sintering Between 5min), after cooling, sinter cake is drawn off, as primary sinter.
(5) cooling, broken, screening: primary sinter is cooled down at room temperature, is then crushed and is sieved, is greater than The finished product sinter of 5mm and powder of returning mine less than 5mm.
Gained finished product sintered ore rotary drum strength 57.3%, usage factor 1.24tm-2·h-1, solid fuel consumption 113.4Kg/ t。
Comparative example 1
(1) ingredient: by the TFe containing 51.13wt%, the SiO of the MgO of the Ni of 1.02wt%, 1.19wt%, 4.21wt%2； LOI value be 12.3wt% lateritic nickel ore (46.5wt%), return mine with 30wt%, 7.5wt% coal dust, 5wt% quick lime, 2.5wt% dolomite and 8.5wt% lime stone mix, and obtain mixture to be sintered.
(2) it pelletizes: water is added in mixture to be sintered, the moisture for adjusting mixture to be sintered is 17.0%.In cylinder It is mixed in mixing machine, controls mixing machine revolving speed 30rmin-1, pack completeness 20%, Granulation time 5min obtains pellet to be sintered, It is 85wt% that granularity, which is greater than 0.5mm, in pellet to be sintered, and particle of the partial size greater than 1mm is 75wt%.
(3) it is sintered: the pellet to be sintered of step (2) being subjected to cloth (wherein bed depth is 700mm), using natural gas Igniting (wherein firing temperature is 1250 DEG C, duration of ignition 2.5min, and igniting negative pressure is 5KPa), it is after igniting that sintering is negative Pressure modulation carries out down draft sintering to 10KPa, after sintering, carries out exhausting cooling and (wherein cools down negative pressure 5kPa, cooling time 5min), sinter cake is drawn off after cooling, as primary sinter.
(4) cooling, broken, screening: primary sinter mine being cooled to room temperature, is then crushed and is sieved, and is obtained big Finished product sinter in 5mm and the powder of returning mine less than 5mm.
Gained finished product sintered ore rotary drum strength 46.3%, usage factor 0.92tm-2·h-1, solid fuel consumption 145.6Kg/ t。
Comparative example 2
(1) ingredient: by the TFe containing 47.4wt%, the SiO of the MgO of the Ni of 0.90wt%, 1.23wt%, 4.83wt%2； LOI value be 13.1wt% lateritic nickel ore (46wt%) and 30wt% return mine, 7.5wt% coal dust, 5wt% quick lime, 2.0wt% Dolomite and 9.5wt% lime stone mix, and obtain mixture to be sintered.
(2) it pelletizes: water is added in mixture to be sintered, the moisture for adjusting mixture to be sintered is 17.0%.In cylinder It is mixed in mixing machine, controls mixing machine revolving speed 30rmin-1, pack completeness 20%, Granulation time 5min obtains pellet to be sintered, It is 85wt% that granularity, which is greater than 0.5mm, in pellet to be sintered, and particle of the partial size greater than 1mm is 75wt%.
(3) it is sintered: the pellet to be sintered of step (2) being subjected to cloth (wherein bed depth is 700mm), using natural gas Igniting (wherein firing temperature is 1200 DEG C, duration of ignition 2min, and igniting negative pressure is 5KPa), will be sintered negative pressure after igniting Modulation carries out down draft sintering to 10KPa, and exhausting cooling is carried out after sintering, (wherein cools down negative pressure 5kPa, cooling time 5min), after cooling, sinter cake is drawn off, as primary sinter.
(4) cooling, broken, screening: after primary sinter is cooled to room temperature, being crushed and sieved, and obtains being greater than 5mm Finished product sinter and powder of returning mine less than 5mm.
Gained sintered ore rotary drum strength 45.1%, usage factor 0.91tm-2·h-1, solid fuel consumption 147.2Kg/t.
Comparative example 1 and comparison 2, it is found that single lateritic nickel ore sintering gained sinter strength compared with Examples 1 to 4 45% or so, usage factor 0.9tm-2·h-1Left and right, solid fuel consumption is up to 145Kg/t or more, and adds Copper making waste residue Afterwards, intensity makes moderate progress, and usage factor improves, and solid fuel consumption significantly reduces；When the additive amount of Copper making waste residue reaches 40%, Sintered ore rotary drum strength can be improved to 57% or so, and usage factor is improved to 1.2tm-2·h-1Left and right, and solid fuel consumption reduces To 114Kg/t hereinafter, sintering character is obviously improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (10)

1. the processing method that a kind of Copper making waste residue is applied to sintering, comprising the following steps:
S1, Copper making waste residue is broken into granularity for 100% less than 5mm, 10% particle less than 1mm obtains Copper making waste residue Powder；
S2, Copper making waste residue powder in S1 and lateritic nickel ore are subjected to ingredient and mixed, obtain Blended Ore Powder；
S3, it by Blended Ore Powder in S2 and solid fuel, composite fluxing agent and returns mine and carries out ingredient, be then uniformly mixed, obtain wait burn Tie mixture；And mixture to be sintered is mixed in trommel mixer and is pelletized, obtain pellet to be sintered；
S4, cloth, igniting, sintering and cooling in sintering machine by pellet to be sintered in S3, obtain primary sinter；
S5, sinter primary in S4 is subjected to cooling, broken and screening, obtains finished product sinter.
2. the processing method that Copper making waste residue according to claim 1 is applied to sintering, which is characterized in that the S1 step In, it is broken to be crushed using double-roll crusher；The Copper making waste residue mainly includes following component 35wt%~45wt% TFe, the SiO of the FeO of the Cu of 0.8wt%~1.5wt%, 35wt%~45wt%, 30wt%~40wt%2。
3. the processing method that Copper making waste residue according to claim 1 is applied to sintering, which is characterized in that the S2 is rapid In, the lateritic nickel ore is limonite type lateritic nickel ore, specifically include that the TFe of 45wt%~55wt%, 0.7wt%~ The SiO of the MgO of the Ni of 1.0wt%, 1wt%~3wt%, 3wt%~6wt%2；LOI value is 11wt%~16wt%.
4. the processing method that Copper making waste residue according to claim 1 or 3 is applied to sintering, which is characterized in that the S2 In step, Copper making waste residue powder and lateritic nickel ore mixing mass ratio are 1:(1.5~4).
5. the processing method that Copper making waste residue according to claim 1 is applied to sintering, which is characterized in that the S3 step In, the ingredient is 100% according to mass percent, includes 45wt%~50wt% Blended Ore Powder, and 7.5wt%~ 8.5wt% solid fuel, 11wt%~18wt% composite fluxing agent, surplus are to return mine.
6. the processing method that Copper making waste residue according to claim 5 is applied to sintering, which is characterized in that the solid combustion Material is coke powder or coal dust；The composite fluxing agent is the composition of quick lime, dolomite and lime stone, the mass ratio of three be (4~ 6): (1.5~3): (2.5~11.5).
7. Copper making waste residue is applied to the processing method of sintering according to claim 1 or 5, which is characterized in that the S3 In step, pelletize specifically includes the following steps: being mixed to mixture spray water to be sintered and after being mixed and being digested with cylinder Machine plasmid obtains pellet to be sintered.
8. the processing method that Copper making waste residue according to claim 7 is applied to sintering, which is characterized in that the granulation Time is 5min；Spray water guarantees pellet moisture content 15wt~16wt% to be sintered；Mixing machine revolving speed 30rmin-1, filling Rate 20%.
9. according to claim 1 or the Copper making waste residue is applied to the processing method being sintered, which is characterized in that the S4 step In rapid, firing temperature is 1150~1250 DEG C, and light a fire negative pressure 4kPa~6kPa, and the duration of ignition is 1min~3min；Cloth height For 700~1000mm, the negative pressure of down draft sintering is 9~12KPa；Cooling negative pressure is 4~6KPa, and cooling time is 3~6min.
10. according to claim 1 or the Copper making waste residue is applied to the processing method being sintered, which is characterized in that the S5 In step, primary sinter is cooled to room temperature, and is then crushed to using jaw crusher and is sieved less than after 40mm, is less than 5mm grade is greater than 5mm as finished product sinter, into blast furnace process as returning mine.
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