CN106148728B - A method of a variety of hazardous wastes containing zinc are disposed simultaneously using rotary kiln device - Google Patents
A method of a variety of hazardous wastes containing zinc are disposed simultaneously using rotary kiln device Download PDFInfo
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- CN106148728B CN106148728B CN201610518050.8A CN201610518050A CN106148728B CN 106148728 B CN106148728 B CN 106148728B CN 201610518050 A CN201610518050 A CN 201610518050A CN 106148728 B CN106148728 B CN 106148728B
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- zinc
- slag
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- mass percent
- containing zinc
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 160
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 160
- 239000011701 zinc Substances 0.000 title claims abstract description 160
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000002893 slag Substances 0.000 claims abstract description 102
- 229910052742 iron Inorganic materials 0.000 claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000010791 quenching Methods 0.000 claims abstract description 25
- 230000000171 quenching effect Effects 0.000 claims abstract description 25
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 24
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000011575 calcium Substances 0.000 claims abstract description 23
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 23
- 238000007670 refining Methods 0.000 claims abstract description 21
- 238000009858 zinc metallurgy Methods 0.000 claims abstract description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 18
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 18
- 239000004571 lime Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 24
- 239000000377 silicon dioxide Substances 0.000 claims description 22
- 239000004615 ingredient Substances 0.000 claims description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- 239000000460 chlorine Substances 0.000 claims description 15
- 239000005864 Sulphur Substances 0.000 claims description 14
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 12
- 229910052801 chlorine Inorganic materials 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 9
- 238000001465 metallisation Methods 0.000 claims description 9
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000284 extract Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 238000009854 hydrometallurgy Methods 0.000 description 19
- 239000000203 mixture Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000002699 waste material Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011133 lead Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- -1 calcic Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- QNDQILQPPKQROV-UHFFFAOYSA-N dizinc Chemical compound [Zn]=[Zn] QNDQILQPPKQROV-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/34—Obtaining zinc oxide
- C22B19/38—Obtaining zinc oxide in rotary furnaces
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention refers to a kind of using rotary kiln device while the method for disposing a variety of hazardous wastes containing zinc, belong in metallurgical production and extracts the process technical field of zinc, including zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, with slag, zinc vertical retorting slag, refining six kinds of hazardous wastes containing zinc of lead Water Quenching Slag in wastewater treatment, at least three kinds in six kinds of hazardous wastes containing zinc is mixed and added into coke powder, calorific value is provided；The mass percent of calcium can pass through addition lime adjustment；The present invention has following the utility model has the advantages that the unfavorable factor for optimizing the various hazardous wastes containing zinc has saved production cost as contributing factors.The reduction for realizing clinker residual zinc, carbon residue, reduces knot kiln that rotary kiln occurs during the reaction and clinker etch refractory lining obtains phenomenon；This flow chart of water need to be added with aqueous low hazardous waste containing zinc by reducing the high hazardous waste containing zinc of water content and need to being pre-dried, and shortened the process cycle of the hazardous waste containing zinc, reduced production cost.
Description
Technical field
The present invention refers to a kind of using rotary kiln device while the method for disposing a variety of hazardous wastes containing zinc, belongs to metallurgical life
The process technical field of zinc is extracted in production.
Background technique
It well known, include zinc and the danger of other metals in the waste that a variety of chemical processes and production method generate
Dangerous waste, such as zinc hydrometallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, zinc vertical retorting slag,
Pyrometallurgical smelting of lead Water Quenching Slag, smelting iron and steel blast furnace dust, sewage treatment produce zinc-containing sludge, the residues containing zinc of other non-ferrous metal metallurgies
Deng；Due to containing the metals such as zinc, lead, iron, indium, tin, bismuth, germanium, when disposing these hazardous wastes containing zinc using rotary kiln,
As can the minimizing of zinc hazardous waste and recycling will be contained, it has not only been able to achieve the recycling of valuable metal, but also can be reduced and eliminate to environment
Pollution, to society generate significance.
The application of material is disposed currently with rotary kiln device than wide, such as in cement building material, chemical industry, metallurgy neck
Domain, by the difference of temperature and oven cavity atmosphere in control rotary kiln device, to handle various powderies, granular, block-like material,
There is the pasty material mixed admittedly for treatment fluid.Under working condition, in rotary kiln device burner hearth other than the burning of fuel,
There are also the physics of storeroom generation, chemical reaction, and under the conditions of maintaining certain temperature and atmosphere, this reaction is continuously
It carries out, the volatile gases and burning flue gas for carrying certain heat are received under kiln tail dust collecting system suction function into kiln tail
The devices such as dirt, UTILIZATION OF VESIDUAL HEAT IN, gas cleaning carry out material recycle and heat energy utilization；The revolution of solid material in kiln in rotation
It is moved in kiln to kiln hood direction, is finally excluded from kiln hood, become product or waste residue.The prior art has the following disadvantages and inconvenience:
1. the material entered in rotary kiln burner hearth needs to control certain when handling the hazardous waste containing zinc using rotary kiln device
Composition, make the material of stable components that various reactions occur in burner hearth；2. the construction features of followed by rotary kiln device, material
By the different role of temperature in kiln body, it is divided into dry zone, preheating zone, reaction zone and cooling zone, the difference of material component, each temperature
Degree distribution band can be not identical to the effect of material.Due to various hazardous wastes remove containing the compositions such as zinc, indium, tin, bismuth, germanium, moisture content with
Outside, also it can carry out very big shadow to rotary kiln device band containing impurity, the differences of these impurity contents such as lead, calcium, silicon, iron, sulphur
It rings, such as inner wall knot kiln, influences the hazardous waste treating capacity of rotary kiln device；Sometimes it will cause recoverable metal rate of recovery drop again
It is low；Sometimes the furnace charge melted can corrode kiln body refractory material, reduce the burner hearth service life.The chemical analysis of the various hazardous wastes containing zinc,
Physical specification character is different: blast furnace dust is low containing zinc and moisture, granularity is small, and iron content is high；Zinc hydrometallurgy Zinc in Leaching Residue
Height, water content is high, high containing silica, fine size；It is generally turned round in zinc hydrometallurgy with slag iron content, calcic, aqueous height, moisture height
When kiln disposes dangerous waste material containing zinc, material composition is not easy to control, when being especially disposed to several or a kind of material, only considers
Zinc content and moisture content, the compositions such as calcic, silicon, iron seldom consider.The present invention is special using the composition of the various hazardous wastes containing zinc
Point carries out a certain proportion of ingredient, the method for realizing rotary kiln device disposition hazardous waste.
The zinc hydrometallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, zinc vertical retorting
Slag, pyrometallurgical smelting of lead Water Quenching Slag the hazardous waste containing zinc main chemical compositions mass percent it is as shown in table 1:
Zinc hydrometallurgy leached mud and except in iron and slag mass percent containing zinc is 10% or so, but iron-content and water content matter
Measuring percentage is but 11.32%, 31.02% and 27.42%, 42.11% respectively.Similarly, the type of each hazardous waste containing zinc
Difference, each main component also differ greatly.
The chemical component of the hazardous waste containing zinc listed by the table 1 can classify as follows:
1, zinc content:
High zinc hazardous waste: zinc hydrometallurgy removes in iron and slag, blast furnace gas ash, refining lead Water Quenching Slag；
Low zinc hazardous waste: in zinc hydrometallurgy leached mud, wastewater treatment and slag, zinc vertical retorting slag.
2, iron-content:
High-speed rail hazardous waste: zinc hydrometallurgy is removed in iron and is refined with slag, blast furnace gas ash, perpendicular tank in slag, wastewater treatment
Cadmia, refining lead Water Quenching Slag；
Low iron hazardous waste: zinc hydrometallurgy leached mud.
3, calcium content:
High calcium hazardous waste: in wastewater treatment and slag, refining lead Water Quenching Slag；
Low calcium hazardous waste: zinc hydrometallurgy leached mud, zinc hydrometallurgy are removed in iron and are refined with slag, blast furnace gas ash, perpendicular tank
Cadmia.
4, silicon content:
High silicon hazardous waste: refining lead Water Quenching Slag；
Low silicon hazardous waste: zinc hydrometallurgy leached mud, zinc hydrometallurgy are except in iron and in slag, wastewater treatment and slag, ironmaking are high
Furnace gas ash, zinc vertical retorting slag.
5, chlorinty:
High chlorine hazardous waste: in wastewater treatment and slag, high chlorine gas ash；
Low chlorine hazardous waste: zinc hydrometallurgy leached mud, zinc hydrometallurgy remove in iron and slag, zinc vertical retorting slag, refining lead Water Quenching Slag.
6, water content:
High-moisture hazardous waste: zinc hydrometallurgy leached mud, zinc hydrometallurgy are except in iron and in slag, wastewater treatment and slag；
Low moisture hazardous waste: blast furnace dust, zinc vertical retorting slag, refining lead Water Quenching Slag.
High cadmia, high scum, high calcium slag, six type of high silicon slag, high chlorine slag and high grain slag are obtained according to above-mentioned classification method
Type.
Hazardous waste containing zinc is disposed using rotary kiln device, is generally required as follows into furnace charge index: 1, quality containing zinc hundred
Divide ratio 8-12%；It is low containing zinc, reduce the rate of recovery of zinc；Containing zinc height, fire box temperature can be made excessively high, cause knot kiln, influence rotary kiln
Working condition.2, for weight of iron degree generally in 20-35%, iron content is low, affects to the utilization of subsequent kiln slag,
Especially reduce utilization efficiency.3, for calcium mass percentage content 4-8%, calcic is high, and the clinker of burner hearth reaction zone can be made to melt
Temperature increases, and increases energy consumption, and kiln wall refractory consumption rate increases.4, silica quality degree is siliceous 25-35%
Height can be such that the clinker melt temperature of burner hearth reaction zone reduces, be bonded together clinker, influence the volatilization of valuable metal.5, sulphur
Mass percent 0.2-13%, sulfur-bearing is high, will affect the recycling of the valuable metals such as zinc, also increases kiln exit gas purification
Pressure.6, carbon, carbon content are high, it is possible to reduce the coking coal consumption of rotary kiln device.7, biodiversity percentage is 14-20%；Water
Divide height, processing need to be dried and dehydrated in advance, shorten reacting in rotary kiln strip length, reduces temperature of flue gas in kiln；Moisture is low, largely
Granular material enters dust collecting system with flue gas, influences treating capacity and zinc oxide product quality.8, granularity 5-15mm, granularity is small, needs
It pelletizes, in kiln on reaction zone, reduces the gas permeability of furnace charge, material reaction is bad, reduces the volatility of valuable metal, grain
Degree is big, needs to be crushed.
The fuel and reducing agent that rotary kiln device disposition hazardous waste containing zinc uses are coke grain and coal, and main component is such as
Table 2
It is shown:
The smeltery of present certain scale, rotary kiln device is as matched process equipment, Lai Huishou valuable metal, place
The material component of reason is stablized, so that technology condition, processing method all comparative maturities.Some lesser smelteries of scale,
The facility that the hazardous waste containing zinc of output needs to be transported to special rotary kiln device processing hazardous waste is disposed, equally
Ground, these rotary kiln device disposal facilities are since the hazardous waste source of processing is unstable, kind and complicated component.It is special to collect
Rotary kiln device or factory with disposition hazardous waste containing zinc, usually individually mix material similar in one, two kind of property
Conjunction processing.Such mode is difficult to take into account the satisfaction of the technical conditions in rotary kiln device burner hearth or granularity or moisture or object
Material zinc, iron, lead, calcium, silicon, magnesium all can be to generating adverse effect in kiln.Comparatively, independent processing or two kinds of mixed processings,
Being easy bring harm has: rotary kiln device output clinker is high containing zinc, carbon residue, causes the waste of resource and the increasing of production cost
Add；Second is that also containing the heavy metals such as arsenic, antimony, lead, cadmium, clinker residual quantity height or innoxious conversion in some hazardous wastes containing zinc
Degree is low, can bring pollution and influence to environment；Third is that influencing the service life of rotary kiln kiln body refractory material；Fourth is that kiln body knot kiln,
Influence treating capacity；Fifth is that increasing the workload of stock preparation system, production cost is increased.
Summary of the invention
The purpose of the present invention is to provide it is a kind of using rotary kiln device simultaneously dispose a variety of hazardous wastes containing zinc method,
The rate of recovery of zinc is improved, the production cost of rotary kiln device disposition hazardous waste containing zinc is reduced, to overcome the prior art not
Foot.
The invention is realized by the following technical scheme, including zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash,
In wastewater treatment and slag, zinc vertical retorting slag, refining six kinds of hazardous wastes containing zinc of lead Water Quenching Slag, by six kinds of hazardous wastes containing zinc extremely
Few three kinds are mixed and added into coke powder and provide calorific value；The mass percent of calcium can pass through addition lime adjustment；
Control rotary kiln enters furnace index, mass percent containing zinc 8-12%, leaded mass percent < 1.5%, weight of iron hundred
It is point more general than content in 20-35%, calcium mass percentage content 4-8%, silica quality degree 25-35%,
The mass percent of sulphur is 0.2-13%, and biodiversity percentage is 14-22%, mass percent containing chlorine < 4%, and FeO:
CaO:SiO2=45:20:35；Granularity 5-15mm；The mass percent of coke powder be 30~40%, calorific value be 1500~1800 kilocalories/
Kilogram.
Respectively the calculation method of hazardous waste containing zinc is as follows:
(1) sets zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, zinc vertical retorting slag,
Refine lead Water Quenching Slag, coke powder, lime gross mass be respectively Ma, Mb, Mc, Md, Me, Mf, Mg, Mh；Then corresponding dry weight is
Ma',Mb',Mc',Md',Me',Mf',Mg',Mh'；
(2) sets zinc and accounts for the quality of Ma ' dry weight as ma1, and the quality that lead accounts for Ma ' dry weight is ma2, and iron accounts for the quality of Ma ' dry weight
For ma3, the quality that calcium accounts for Ma ' dry weight is ma4, and the quality that silica accounts for Ma ' dry weight is ma5, and the quality that sulphur accounts for Ma ' dry weight is
Ma5, the quality that moisture accounts for Ma ' dry weight is ma6, and the quality that chlorine accounts for Ma ' dry weight is ma7；
The mass percent that known zinc accounts for Ma gross weight is Wa1, and the mass percent that lead accounts for Ma gross weight is Wa2, and it is total that iron accounts for Ma
The mass percent of weight is Wa3, and the mass percent that calcium accounts for Ma gross weight is Wa4, and silica accounts for the mass percent of Ma gross weight
For Wa5, the mass percent that sulphur accounts for Ma gross weight is Wa6, and the mass percent that moisture accounts for Ma gross weight is Wa7, and chlorine accounts for Ma gross weight
Mass percent is Wa8；
(3) then the quality of zinc is ma1=Ma ' × Wa1% in Ma；
Mb1 to mh1 is similarly acquired, calculate that charge quality the percentage y1, y1 of zinc should meet enters furnace standard；
If the proportion scale that Ma, Mb, Mc, Md, Me, Mf, Mg, Mh are added is Xa1 to Xh1, Xa1 is obtained in y1 to Xh1's
Value range；
(4) and so on obtains the value range of Xa2 to Xh2 in y2, until in y8 Xa8 to Xh8 value range；
(5) traverses Xa1 to Xa8, takes the public value range of Xa1 to Xa8, i.e. the proportion scale of Ma is Xa '；
The proportion scale for similarly obtaining Ma to Mh is Xb ' to Xh '；
(6) takes zinc metallurgy leached mud Xa ' %, except in iron and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, in wastewater treatment and slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, lime Xh ' % mixing.
The present invention the following steps are included:
Step 1, pre-process, detection zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag,
Zinc vertical retorting slag, refining lead Water Quenching Slag, coke powder, the quality of lime, ingredient, granularity；Various hazardous wastes containing zinc are individually stored up, and
Mark；And granularity is sieved and is crushed with blocky hazardous waste containing zinc greatly；
Step 2, ingredient will respectively the ingredient of hazardous waste containing zinc be uniformly mixed；
And meet following mass percentage content standard: zinc 8~12%；Iron 20~35%；Calcium 4~8%；Silica 25~
35%；Sulphur 0.2~13%；Lead < 1.5%；Cl<4%;Moisture 14~22%, 1500~1800 kilocalorie of fixed carbon calorific value/kilogram；And
FeO:CaO:SiO2=45:20:35；5~15mm of granularity；
Zinc metallurgy leached mud Xa ' % is taken, except in iron and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, in wastewater treatment and slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, lime Xh ' % mixing；
Step 3, roasting is collected, and the mixed material for meeting step 2 standard is fed in rotary kiln by feeding device and is roasted,
Generate oxide powder and zinc and metallization clinker；Oxide powder and zinc is collected from kiln tail dust chamber, metallization clinker is discharged from kiln hood.
The present invention has following the utility model has the advantages that utilizing the chemical component of various hazardous wastes containing zinc and coking coal powder and physical
Matter, when solving the hazardous waste of rotary kiln device disposition different types, since composition control does not conform in rotary kiln device burner hearth
Reason bring as temperature is unstable, furnace charge melt temperature is low or furnace charge melt temperature is high, Temperature Distribution band is unreasonable, kiln slag containing zinc,
The problems such as carbon containing high.By 3 kinds or more hazardous wastes containing the zinc method that ingredient is disposed simultaneously, optimize various containing zinc danger
The unfavorable factor of dangerous waste becomes contributing factors, realizes the optimum combination of the material component and property that feed rotary kiln device, both
The beneficial one side of the various composition of every kind of material is utilized, in turn avoids the one side for generating harm, has saved production cost.It realizes
The reduction of clinker residual zinc, carbon residue, reduces knot kiln that rotary kiln occurs during the reaction and clinker etch refractory lining obtains
Phenomenon；On the other hand, reducing the high hazardous waste containing zinc of water content need to be pre-dried and the aqueous low need of hazardous waste containing zinc
Add this flow chart of water, shortens the process cycle of the hazardous waste containing zinc, reduce production cost.
Specific embodiment
It can be seen from background technology that be usually all one in the technique of existing rotary kiln device disposition hazardous waste containing zinc
Kind or two kinds of mixed processings of hazardous waste containing zinc cannot be eliminated each due to the mixed ingredient of independent one or two kinds of materials
Kind component brings the adverse effect of technology condition and equipment when may dispose to rotary kiln device.
Proportion mixing while the present invention provides one kind to several hazardous wastes containing zinc, by each of the various hazardous wastes containing zinc
Kind of ingredient in independent disposition, may bring unfavorable factor become beneficial to factor, to keep zinc metal recovery rate high, production
The low-cost process of dangerous waste disposal containing zinc.
The present invention includes zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, perpendicular tank refining
At least three kinds in six kinds of hazardous wastes containing zinc are mixed and added into coke powder by cadmia, refining six kinds of hazardous wastes containing zinc of lead Water Quenching Slag
Calorific value is provided；The mass percent of calcium can pass through addition lime adjustment；
Control rotary kiln enters furnace index, mass percent containing zinc 8-12%, leaded mass percent < 1.5%, weight of iron hundred
It is point more general than content in 20-35%, calcium mass percentage content 4-8%, silica quality degree 25-35%,
The mass percent of sulphur is 0.2-13%, and biodiversity percentage is 14-22%, mass percent containing chlorine < 4%, and FeO:
CaO:SiO2=45:20:35；Granularity 5-15mm；The mass percent of coke powder be 30~40%, calorific value be 1500~1800 kilocalories/
Kilogram.
Respectively the calculation method of hazardous waste containing zinc is as follows:
(1) sets zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, zinc vertical retorting slag,
Refine lead Water Quenching Slag, coke powder, lime gross mass be respectively Ma, Mb, Mc, Md, Me, Mf, Mg, Mh；Then corresponding dry weight is
Ma',Mb',Mc',Md',Me',Mf',Mg',Mh'；
(2) sets zinc and accounts for the quality of Ma ' dry weight as ma1, and the quality that lead accounts for Ma ' dry weight is ma2, and iron accounts for the quality of Ma ' dry weight
For ma3, the quality that calcium accounts for Ma ' dry weight is ma4, and the quality that silica accounts for Ma ' dry weight is ma5, and the quality that sulphur accounts for Ma ' dry weight is
Ma5, the quality that moisture accounts for Ma ' dry weight is ma6, and the quality that chlorine accounts for Ma ' dry weight is ma7；
The mass percent that known zinc accounts for Ma gross weight is Wa1, and the mass percent that lead accounts for Ma gross weight is Wa2, and it is total that iron accounts for Ma
The mass percent of weight is Wa3, and the mass percent that calcium accounts for Ma gross weight is Wa4, and silica accounts for the mass percent of Ma gross weight
For Wa5, the mass percent that sulphur accounts for Ma gross weight is Wa6, and the mass percent that moisture accounts for Ma gross weight is Wa7, and chlorine accounts for Ma gross weight
Mass percent is Wa8；Ginseng is shown in Table 3,
(3) then the quality of zinc is ma1=Ma ' × Wa1% in Ma；
Mb1 to mh1 is similarly acquired, calculate that charge quality the percentage y1, y1 of zinc should meet enters furnace standard；
If the proportion scale that Ma, Mb, Mc, Md, Me, Mf, Mg, Mh are added is Xa1 to Xh1；
Obtain the value range of Xa1 to Xh1 in y1；
(4) and so on obtains the value range of Xa2 to Xh2 in y2, until in y8 Xa8 to Xh8 value range；
(5) traverses Xa1 to Xa8, takes the public value range of Xa1 to Xa8, i.e. the proportion scale of Ma is Xa '；
The proportion scale for similarly obtaining Ma to Mh is Xb ' to Xh '；
(6) takes zinc metallurgy leached mud Xa ' %, except in iron and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, in wastewater treatment and slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, lime Xh ' % mixing.
The present invention the following steps are included:
Step 1, pre-process, detection zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag,
Zinc vertical retorting slag, refining lead Water Quenching Slag, coke powder, the quality of lime, ingredient, granularity；Various hazardous wastes containing zinc are individually stored up, and
Mark；And granularity is sieved and is crushed with blocky hazardous waste containing zinc greatly；
Step 2, ingredient will respectively the ingredient of hazardous waste containing zinc be uniformly mixed；
And meet following mass percentage content standard: zinc 8~12%；Iron 20~35%；Calcium 4~8%；Silica 25~
35%；Sulphur 0.2~13%；Lead < 1.5%；Cl<4%;Moisture 14~22%, 1500~1800 kilocalorie of fixed carbon calorific value/kilogram
(kcal/kg)；And FeO:CaO:SiO2=45:20:35；5~15mm of granularity；
Zinc metallurgy leached mud Xa ' % is taken, except in iron and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, in wastewater treatment and slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, lime Xh ' % mixing；
Step 3, roasting is collected, and the mixed material for meeting step 2 standard is fed in rotary kiln by feeding device and is roasted,
Generate oxide powder and zinc and metallization clinker；Oxide powder and zinc is collected from kiln tail dust chamber, metallization clinker is discharged from kiln hood.
Specific example is by taking certain rotary kiln device disposably disposes 100 tons of hazardous waste containing zinc as an example, to disposition simultaneously and benefit
It is illustrated with the process that four kinds of hazardous wastes containing zinc extract zinc, the more hazardous waste containing zinc of the daily disposition of the device is
The blast furnace dust of iron-smelter, followed by zinc hydrometallurgy leached mud, except in iron and slag, gas mud, lime are additives, it is main
Chemical component index is as shown in table 4:
Proportion scale according to the invention calculates, and calculates separately under the various ratios composition that gross weight is 100 tons of material combinations
Constituent content.
According to the component content that different ratios combines, optimal combination ratio is determined, as shown in table 5:
The ratio of determining each material is 35 tons of blast furnace ash in 100 tons of mixed materials, 28 tons of zinc hydrometallurgy leached mud, wet
In method zinc metallurgy and 4 tons of iron dross removing, 11 tons of blast furnace gas mud, 2 tons of lime, 20 tons of coal.Each component mass percentage content after ingredient
It is Zn8.42%, moisture 20.94%, 24.97% × 6000kcal/kg of the calorific value of 24.97%(containing fixed carbon=1500kcal.),
FeO23.86%,CaO7.5,SiO2Each ingredient of 12.39%, Cl1.99%. reaches charge quality control range.
It is uniformly mixed with loading machine, the mixture after then mixing to mixing samples sampling observation, chemical examination detection each component
Mass percentage content: Zn8.42%, moisture 20.94%, 24.97% × 6000kcal/kg of the calorific value of 24.97%(containing fixed carbon=
1500kcal.), FeO23.86%, CaO7.5, SiO212.39%,Cl1.99%。
The hazardous waste containing zinc for meeting quality control requirement and coking coal powder mixture are added to disc feeding storehouse, pass through circle
Disk batcher is expected on travelling belt.
Mixture is fed in rotary kiln device, once passes through dryer section drying, the preheating of preheating section, the roasting of conversion zone
Reduction generates Second-rate zinc oxide powder product and metallization clinker.Wherein the temperature of dryer section be maintained at 450 DEG C -750 DEG C, preheating section
Temperature be maintained at 800 DEG C -1000 DEG C, the temperature of conversion zone is maintained at 1100 DEG C -1200 DEG C.
Carbon in mixture also provides 1100 DEG C of maintaining reaction temperature-other than providing the carbonaceous reducing agent of reduction Zn-ef ficiency
1200 DEG C of heat source.Zn-ef ficiency, which is restored in reaction zone by carbon, becomes zinc fume, and with the oxygen in flue gas oxygen occurs for zinc fume again
Change reaction, production zinc oxide fine particles sequentially enter kiln tail expansion chamber, a secondary settlement under the suction function of kiln tail system
Room and bagroom.The grade containing zinc of expansion chamber can't be used as product utilization, again return to ingredient 20% or so
It after system ingredient, is roasted again into rotary kiln device, the oxide powder and zinc zinc grade of secondary settlement room 50% or more, receive by cloth bag
The oxide powder and zinc product that two kinds are collected is stirred mixing with spiral mixer in 65% or more by the zinc grade of dirt room, after mixing
The Wei≤50% of Pin containing zinc, packaging after become product sell or utilize.
After hazardous waste containing zinc proposes zinc disposition by rotary kiln device, wherein iron-containing oxide also part at high temperature
Reduction forms metallization clinker, is discharged from kiln hood.Metallic iron is oxidized at high temperature in order to prevent, the metallization to kiln hood discharge
Clinker carries out Water Quenching, is then recycled in subsequent handling.
Several hazardous wastes containing zinc are handled according to the method described above, finally obtain the secondary oxidation of position≤50% of product containing zinc
Zinc product；Clinker Han Tie≤45%, Han Xin≤1%, Han Tan≤10% for metallizing later, can by magnetic separation recovery iron and carbon, at
For blast furnace, the raw material of converter, tailing can be used as brick-making raw material.Or the raw material directly as cement plant.It realizes and endangers containing zinc
The harmlessness disposing and resource utilization of dangerous waste.
Claims (2)
1. a kind of method for disposing a variety of hazardous wastes containing zinc simultaneously using rotary kiln device, including zinc metallurgy leached mud, except in iron
With slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, zinc vertical retorting slag, refining six kinds of hazardous wastes containing zinc of lead Water Quenching Slag, spy
Sign is:
At least three kinds in six kinds of hazardous wastes containing zinc are mixed and added into coke powder, calorific value is provided；The mass percent of calcium can pass through
Add lime adjustment；
Control rotary kiln enters furnace index, mass percent containing zinc 8-12%, leaded mass percent < 1.5%, weight of iron percentage
Content generally in 20-35%, calcium mass percentage content 4-8%, silica quality degree 25-35%, sulphur
Mass percent is 0.2-13%, and biodiversity percentage is 14-22%, mass percent containing chlorine < 4%, and FeO:CaO:
SiO2=45:20:35；Granularity 5-15mm；The mass percent of coke powder be 30~40%, calorific value be 1500~1800 kilocalories/kilogram；
According to it is described enter furnace standard, respectively hazardous waste containing the zinc calculation method of addition is as follows:
(1) sets zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, zinc vertical retorting slag, refining lead
Water Quenching Slag, coke powder, lime gross mass be respectively Ma, Mb, Mc, Md, Me, Mf, Mg, Mh；Then corresponding dry weight be Ma ',
Mb',Mc',Md',Me',Mf',Mg',Mh'；
(2) sets zinc and accounts for the quality of Ma ' dry weight as ma1, and the quality that lead accounts for Ma ' dry weight is ma2, and the quality that iron accounts for Ma ' dry weight is
Ma3, the quality that calcium accounts for Ma ' dry weight is ma4, and the quality that silica accounts for Ma ' dry weight is ma5, and the quality that sulphur accounts for Ma ' dry weight is
Ma5, the quality that moisture accounts for Ma ' dry weight is ma6, and the quality that chlorine accounts for Ma ' dry weight is ma7；
The mass percent that known zinc accounts for Ma gross weight is Wa1, and the mass percent that lead accounts for Ma gross weight is Wa2, and iron accounts for Ma gross weight
Mass percent is Wa3, and the mass percent that calcium accounts for Ma gross weight is Wa4, and the mass percent that silica accounts for Ma gross weight is
Wa5, the mass percent that sulphur accounts for Ma gross weight is Wa6, and the mass percent that moisture accounts for Ma gross weight is Wa7, and chlorine accounts for the matter of Ma gross weight
Amount percentage is Wa8；
(3) then the quality of zinc is ma1=Ma ' × Wa1% in Ma；
Mb1 to mh1 is similarly acquired, calculate that charge quality the percentage y1, y1 of zinc should meet enters furnace standard；
If the proportion scale that Ma, Mb, Mc, Md, Me, Mf, Mg, Mh are added is Xa1 to Xh1；
Obtain the value range of Xa1 to Xh1 in y1；
(4) and so on obtains the value range of Xa2 to Xh2 in y2, until in y8 Xa8 to Xh8 value range；
(5) traverses Xa1 to Xa8, takes the public value range of Xa1 to Xa8, i.e. the proportion scale of Ma is Xa '；
The proportion scale for similarly obtaining Ma to Mh is Xb ' to Xh '；
(6) takes zinc metallurgy leached mud Xa ' %, except in iron and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, in wastewater treatment and slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, lime Xh ' % mixing.
2. a kind of method for disposing a variety of hazardous wastes containing zinc simultaneously using rotary kiln device according to claim 1,
Be characterized in the following steps are included:
Step 1, it pre-processes, detection zinc metallurgy leached mud, except in iron and slag, blast furnace ironmaking gas ash, in wastewater treatment and slag, perpendicular tank
Zinc metallurgy slag, refining lead Water Quenching Slag, coke powder, the quality of lime, ingredient, granularity；Various hazardous wastes containing zinc are individually stored up, and are marked
Know；And granularity is sieved and is crushed with blocky hazardous waste containing zinc greatly；
Step 2, ingredient will respectively the ingredient of hazardous waste containing zinc be uniformly mixed；
And meet following mass percentage content standard: zinc 8~12%；Iron 20~35%；Calcium 4~8%；Silica 25~35%；
Sulphur 0.2~13%；Lead < 1.5%；Cl<4%;Moisture 14~22%, 1500~1800 kilocalorie of fixed carbon calorific value/kilogram；And FeO:
CaO:SiO2=45:20:35；5~15mm of granularity；
Zinc metallurgy leached mud Xa ' % is taken, it is in wastewater treatment and slag Xd ' %, perpendicular except in iron and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %
Tank zinc metallurgy slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, lime Xh ' % mixing；
Step 3, roasting is collected, and the mixed material for meeting step 2 standard is fed in rotary kiln by feeding device and is roasted, and is generated
Oxide powder and zinc and metallization clinker；Oxide powder and zinc is collected from kiln tail dust chamber, metallization clinker is discharged from kiln hood.
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| CN107227411A (en) * | 2017-05-12 | 2017-10-03 | 鑫联环保科技股份有限公司 | A kind of method that rotary kiln oxygen-enriched combusting prepares high-grade secondary zinc oxide |
| CN108950183B (en) * | 2018-07-16 | 2020-01-14 | 四环锌锗科技股份有限公司 | Method for improving roasting mode of zinc electrolysis waste residues |
| CN110055403B (en) * | 2019-05-31 | 2022-05-13 | 衢州市业胜金属材料有限公司 | Method for joint treatment of electroplating sludge and blast furnace gas ash |
| CN111118283B (en) * | 2020-01-07 | 2021-10-08 | 云南云铜锌业股份有限公司 | Method for granulating zinc leaching residues, zinc leaching residue material and application thereof |
| CN111893295A (en) * | 2020-08-12 | 2020-11-06 | 鑫联环保科技股份有限公司 | Enrichment recovery method for zinc-containing secondary resource volatilization kiln |
| CN113846234B (en) * | 2021-10-19 | 2022-10-11 | 新疆紫金有色金属有限公司 | Rotary kiln volatilization treatment method for high-silicon zinc leaching residues |
| CN114540628B (en) * | 2022-01-20 | 2023-11-14 | 云南云铜锌业股份有限公司 | Method for treating zinc-impregnated slag, zinc smelting gypsum slag and blast furnace gas ash |
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