CN106521140A - Oil-carbon-sulfur removing high-alkali sodium roasting process - Google Patents

Oil-carbon-sulfur removing high-alkali sodium roasting process Download PDF

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Publication number
CN106521140A
CN106521140A CN201610992533.1A CN201610992533A CN106521140A CN 106521140 A CN106521140 A CN 106521140A CN 201610992533 A CN201610992533 A CN 201610992533A CN 106521140 A CN106521140 A CN 106521140A
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Prior art keywords
sodium
leaching
alkali
roasting
oiling
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CN201610992533.1A
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Inventor
陈礼华
白赓羽
袁善齐
刘德勇
李玉俊
唐仕琼
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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
    • C22B1/02—Roasting processes
    • 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
    • C22B21/00—Obtaining aluminium
    • C22B21/0015—Obtaining aluminium by wet processes
    • 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
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/04—Obtaining nickel or cobalt by wet processes
    • C22B23/0407—Leaching processes
    • 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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/20—Obtaining niobium, tantalum or vanadium
    • C22B34/22—Obtaining vanadium
    • 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
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C22B34/34—Obtaining molybdenum
    • 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

Abstract

The invention discloses an oil-carbon-sulfur removing high-alkali sodium roasting process. The process comprises the following steps: dried leaching slag, oil-low molybdenum-low vanadium contained raw materials, coke powder, low molybdenum-low vanadium contained raw materials, molybdenum-vanadium contained dense pulp alkali liquid and alkali are fed in a rake stirrer, and sodium carbonate is added for uniform stirring to place by 24 hours to obtain a mixture A; the mixture A is added in a rotary kiln roasting furnace for roasting to obtain a roasted material B; the roasted material B is added in a rotary leaching machine with leaching liquid for leaching to obtain leaching suspension C and solution D; and the leaching suspension C and the solution D are further separated for filtering to obtain a final product-aluminum hydroxide. The oil-carbon-sulfur removing high-alkali sodium roasting process finishes roasting by one step; and compared with the prior art, the process saves the time, the labors and the equipment investment, effectively reduces personal investment, reduces the production cost, and realizes full reclamation, reduction and harmlessness in the raw material treatment process.

Description

A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration
Technical field
The present invention relates to roasting technique field, more particularly to a kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration.
Background technology
With industrialized continuous development, roasting technique is more and more applied.Existing de-oiling decarbonization, desulfuration roasting Firing technique, with the addition of the auxiliary materials such as lime stone, fluorite, silica, coke powder, sodium carbonate, and in roasting process, contained by raw material itself Calorific value cannot meet all heats required for production technology, therefore, substantial amounts of natural gas need to be supplemented to maintain baked for producing Persistently carry out, result in input in production process very big；Existing de-oiling decarbonization, desulfuration roasting technique, the roasting obtained by roasting Imitation frosted glass carries out leaching operation, the phase analysis that roasting material is obtained Jing leaching, after separating, using at the method that high-temperature fusion solidifies Reason, contains alloy high-temp melting isolation of purified technical process, the equipment investment of this technical process needs costliness, and greatly Electric energy consumption；Moreover, existing de-oiling decarbonization, desulfuration roasting technique, complex operation, personnel's input amount are big, produce into This height, in production process, raw material conversion ratio is not high, and raw material causes the serious wasting of resources and environment is dirty using not abundant enough Dye.It is more and more rare with social energy resources, and various countries' social enviroment protection tissue increasingly weighing to people's living environment Depending on, existing de-oiling decarbonization, desulfuration roasting technique cannot meet the needs of current production, therefore, it is badly in need of proposing that one kind is new Low input, non-harmful de-oiling decarbonization, desulfuration roasting technique..Based on the problems referred to above, the present invention proposes a kind of de-oiling decarburization The high-alkali sodium roasting technique of desulfurization.
The content of the invention
The invention aims to shortcoming present in prior art is solved, and a kind of de-oiling decarbonization, desulfuration for proposing is high Alkali sodium roasting technique.
A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration, comprises the following steps：
S1, batch mixing：By drying phase analysis, oil-containing containing the low vanadium raw materials of low molybdenum, coke powder, containing the low vanadium raw materials of low molybdenum, containing the dense of molybdenum vanadium Slurry alkali lye and alkali are put in rake mixer, add sodium carbonate, puddle uniform rear placement 24 hours, obtain batch mixing A；
S2, step S1 batch mixing A is added in rotary kiln type roaster carries out roasting, sintering temperature is 1000～1200 DEG C, obtain roasting material B；
S3, the roasting material B of gained in step S2 is added in the swinging leaching machine equipped with leaching liquid and carries out leaching behaviour Make, obtain leaching suspension C and solution D；
S4, the leaching suspension C and solution D of the gained in step S3 are further separated, filter operation, obtain final products Aluminium hydroxide.
Preferably, in step S1, the addition of sodium carbonate is the theoretical value of consumption sodium carbonate in dispensing.
Preferably, in the leaching operation in step S3, soluble sodium molybdate, sodium vanadate, sodium ferrite, sodium aluminate are entered Leaching liquid.
Preferably, in step S3 leach suspension C in suspended things be nickel oxide, di-iron trioxide, sodium silicoaluminate, Raw material particulate.
Preferably, sodium aluminate, sodium molybdate, sodium vanadate are included in step S3 in solution D.
Preferably, in step S4 separation, filter operation are specifically included：Separation, filtration, washing and filtering, heavy aluminium, point Filter from, slurries, desilting is filtered, filtrate concentration, washing and filtering.
A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration of the present invention, makes full use of calorific value contained by raw material itself to expire Heat required for sufficient production technology, raw material per ton can save 200m3～300m3Natural gas, the present invention are no longer adopted to drying phase analysis High-temperature fusion curing process is used, alloy high-temp melting isolation of purified technical process is reduced, is effectively saved electric energy, original per ton It is electric that material can save 1000 degree～1500 degree of electric energy, all adopt waste heat boiler recovery heat energy in the utilization of fume afterheat, and recovery is hot Can be quite；Reduce auxiliary material kind, reduce supplementary product consumption, the present invention does not use lime stone, fluorite and silica, it is coke powder, natural Gas consumption is greatly decreased, and is effectively reduced waste discharge total amount and carbon dioxide gas emissions；The extractable original of the present invention Alundum (Al2O3) in material, makes alundum (Al2O3) resource obtain abundant recycling, than existing process alundum (Al2O3) solid As the more abundant of cement material utilization in slugging, while alundum (Al2O3) of the molybdenum vanadium nickel in drying phase analysis in phase analysis are extracted When, molybdenum vanadium 99% can be extracted again into liquid phase, the comprehensive recovery of molybdenum vanadium up to more than 97%, the molybdenum in the present invention in raw material Vanadium recovery improves 5%, and resource is fully used, and nickel 100% is enriched with 4～8 times into solid phase, the nickel being enriched with solid phase Can be fully utilized as resource；High-alkali one step of sodium roasting of de-oiling decarbonization, desulfuration proposed by the present invention is completed, with respect to existing skill Art is time saving and energy saving, saves equipment investment, is effectively reduced personnel's input, reduces production cost, adequately achieve Feedstock treating During abundant resource, minimizing, innoxious.
Specific embodiment
The present invention is further explained with reference to specific embodiment.
A kind of high-alkali sodium roasting technique of embodiment de-oiling decarbonization, desulfuration proposed by the present invention, comprises the following steps：
Batch mixing：With dry phase analysis as major ingredient, add sodium carbonate, containing the low vanadium raw materials of low molybdenum, the underflow alkali lye containing molybdenum vanadium and alkali Put in rake mixer, add the underflow alkali lye containing molybdenum vanadium, insufficient section to mend by the theoretical value that sodium carbonate is consumed in dispensing Fill sodium carbonate powder, the calorific value of dispensing is so that containing based on low molybdenum vanadium raw materials, insufficient section fills into oil-containing molybdenum vanadium raw materials or coke powder, puddles Batch mixing is obtained after uniform, is used after placing 24 hours；
Roasting：Batch mixing is added in rotary kiln type roaster carries out roasting, and sintering temperature is 1000～1200 DEG C, must be roasted Imitation frosted glass, under normal production scenarios, the energy is from dispensing itself and raw material oil gas, there is provided thermal source, it is ensured that sintering temperature, without supplement Natural gas, the molybdenum vanadium in dispensing are converted into soluble sodium molybdate, sodium vanadate, and conversion ratio reaches more than 98%, silica conversion For insoluble sodium silicoaluminate, conversion ratio more than 80%, alundum (Al2O3) are converted into soluble sodium aluminate, conversion ratio more than 80%, Iron oxide is converted into soluble sodium ferrite, conversion ratio more than 80%, and nickel oxide does not change, and sulphur is oxidized to be converted into titanium dioxide Sulphur, because high-alkali 70%～80% Sulphur Dioxide is that soluble sodium sulfate enters solid phase in wet cleaning removal of impurities purification, life Recycled with sulfate crystal salt in producing wastewater treatment process, 20%～30% sulfur dioxide enters gas phase finally in flue gas The recycling of calcium sulfate solid phase is converted in processing procedure, the sulphur in dispensing comes self-contained low molybdenum vanadium raw materials and oil-containing molybdenum vanadium raw materials, Which only accounts for 20%～30% in dispensing；
Leaching：The roasting material of gained is added in the swinging leaching machine equipped with leaching liquid carries out leaching operation, roasting In material, soluble sodium molybdate, sodium vanadate, sodium ferrite, sodium aluminate are entered in leaching liquid, and up to more than 98%, sodium ferrite exists extraction rate It is di-iron trioxide and NaOH that hydrolysis occur in liquid phase, there is no the raw material for converting and the porcelain bead mixed in raw material Container bottom is leached, is discharged by bottom drain hole, separated raw material return batch mixing, porcelain bead is recycled, oozed turbid liquid and return leaching Go out container, suspended things are nickel oxide, di-iron trioxide, sodium silicoaluminate, raw material particulate etc. in leaching suspension, be aluminic acid in solution Sodium, sodium molybdate, sodium vanadate etc.；
Separate：It is further separated out leaching raw material particulate in suspension using seperator, in raw material particulate, suspension is returned Leaching；
Filter：Using flame filter press suspended things in sodium aluminate solution (nickel oxide, iron oxide, sodium silicoaluminate etc.) mistake Filter, separate；
Washing and filtering：Above-mentioned screening is scrubbed filter to isolate screening in the sodium aluminate solution carried secretly, the screening after washing Middle nickel oxide content can be enriched with 4～8 times；
Heavy aluminium：Adding little particulate in sodium aluminate solution adds precipitating reagent, precipitating reagent to hydrolyze in the solution simultaneously, hydrolysate Soda is generated with the NaOH reaction in solution, sodium aluminate hydrolysis in promoting solution generates aluminium hydroxide absorption in the little of addition Big particulate is formed on particulate；
Separate：Sized particles are separated；
Slurries are filtered：Little particulate is separated with solution, and screening adds depositing technology as little particulate seed；
Desilting is filtered：Big particulate is separated with solution；
Filtrate concentrates：Jing slurries are filtered the soda concentrating filter liquor of vanadium containing molybdenum that gained is filtered with desilting, formation contains molybdenum The soda salt slurry of vanadium returns mixing procedure；
Washing and filtering：The scrubbed sodium carbonate liquor of vanadium containing molybdenum for filtering to isolate entrainment of particulate aluminium hydroxide, obtains hydrogen greatly Alumina product.
A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration of the present invention, makes full use of calorific value contained by raw material itself to expire Heat required for sufficient production technology, raw material per ton can save 200m3～300m3Natural gas, the present invention are no longer adopted to drying phase analysis High-temperature fusion curing process is used, alloy high-temp melting isolation of purified technical process is reduced, is effectively saved electric energy, original per ton It is electric that material can save 1000 degree～1500 degree of electric energy, all adopt waste heat boiler recovery heat energy in the utilization of fume afterheat, and recovery is hot Can be quite；Reduce auxiliary material kind, reduce supplementary product consumption, the present invention does not use lime stone, fluorite and silica, it is coke powder, natural Gas consumption is greatly decreased, raw material per ton save lime stone 150kg～200kg, fluorite 40kg～60kg, silica 50kg～80kg, Coke powder 40kg～60kg, natural gas 200m3～300m3, raw material per ton can reduce solid waste discharge no less than 174kg, can Carbon dioxide discharge is reduced no less than 605kg (150kg lime stone 66kg, 40kg coke powder 146kg, 200m3 natural gases 392kg), waste discharge total amount and carbon dioxide gas emissions are effectively reduced；The extractable raw material of the present invention (45%～ 60% alundum (Al2O3)) in alundum (Al2O3) more than 85%, raw material per ton can reduce solid waste discharge again no less than 382kg Make alundum (Al2O3) resource obtain abundant recycling, than existing process alundum (Al2O3) solidification slag in as cement raw material What is utilized is more abundant, while during alundum (Al2O3) of the molybdenum vanadium nickel in drying phase analysis in phase analysis are extracted, molybdenum vanadium 99% enters liquid Mutually can extract again, up to more than 97%, the molybdenum vanadium recovery in the present invention in raw material improves 5% to the comprehensive recovery of molybdenum vanadium, Resource is fully used, and nickel 100% is enriched with 4～8 times into solid phase, and the nickel being enriched with solid phase can be abundant as resource Utilize；High-alkali one step of sodium roasting of de-oiling decarbonization, desulfuration proposed by the present invention is completed, and hinge structure is time saving and energy saving, saves equipment Investment, is effectively reduced personnel's input, reduces production cost, adequately achieve during Feedstock treating fully resource, It is minimizing, innoxious.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its Inventive concept equivalent or change in addition, should all be included within the scope of the present invention.

Claims (6)

1. the high-alkali sodium roasting technique of a kind of de-oiling decarbonization, desulfuration, it is characterised in that comprise the following steps：
S1, batch mixing：By drying phase analysis, oil-containing containing the low vanadium raw materials of low molybdenum, coke powder, containing the low vanadium raw materials of low molybdenum, the underflow alkali containing molybdenum vanadium Liquid and alkali are put in rake mixer, add sodium carbonate, puddle uniform rear placement 24 hours, obtain batch mixing A；
S2, step S1 batch mixing A is added in rotary kiln type roaster carries out roasting, sintering temperature is 1000～1200 DEG C, is obtained Roasting material B；
S3, the roasting material B of gained in step S2 is added in the swinging leaching machine equipped with leaching liquid and carries out leaching operation, obtained To leaching suspension C and solution D；
S4, the leaching suspension C and solution D of the gained in step S3 are further separated, filter operation, obtain final products hydrogen-oxygen Change aluminium.
2. a kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration according to claim 1, it is characterised in that the step In S1, the addition of sodium carbonate is the theoretical value of consumption sodium carbonate in dispensing.
3. a kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration according to claim 1, it is characterised in that the step In leaching operation in S3, soluble sodium molybdate, sodium vanadate, sodium ferrite, sodium aluminate enter leaching liquid.
4. a kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration according to claim 1, it is characterised in that the step It is nickel oxide, di-iron trioxide, sodium silicoaluminate, raw material particulate that the suspended things in suspension C are leached in S3.
5. a kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration according to claim 1, it is characterised in that the step Sodium aluminate, sodium molybdate, sodium vanadate are included in S3 in solution D.
6. a kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration according to claim 1, it is characterised in that the step Separation, filter operation in S4 is specifically included：Separation, filtration, washing and filtering, heavy aluminium, separation, slurries filtration, desilting are filtered, are filtered Liquid concentration, washing and filtering.
CN201610992533.1A 2016-11-06 2016-11-06 Oil-carbon-sulfur removing high-alkali sodium roasting process Pending CN106521140A (en)

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CN109055718A (en) * 2018-08-11 2018-12-21 德阳市米雅乐食品厂 A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration
CN109082521A (en) * 2018-08-11 2018-12-25 四川如意廊商贸有限公司 A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration

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CN109055718A (en) * 2018-08-11 2018-12-21 德阳市米雅乐食品厂 A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration
CN109082521A (en) * 2018-08-11 2018-12-25 四川如意廊商贸有限公司 A kind of high-alkali sodium roasting technique of de-oiling decarbonization, desulfuration

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Application publication date: 20170322