CN106148728A - A kind of utilize rotary kiln device to dispose the multiple method containing zinc hazardous waste simultaneously - Google Patents
A kind of utilize rotary kiln device to dispose the multiple method containing zinc hazardous waste simultaneously Download PDFInfo
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- CN106148728A CN106148728A CN201610518050.8A CN201610518050A CN106148728A CN 106148728 A CN106148728 A CN 106148728A CN 201610518050 A CN201610518050 A CN 201610518050A CN 106148728 A CN106148728 A CN 106148728A
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- Prior art keywords
- zinc
- slag
- accounts
- hazardous waste
- mass percent
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- Granted
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 165
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 165
- 239000011701 zinc Substances 0.000 title claims abstract description 165
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000002893 slag Substances 0.000 claims abstract description 122
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 65
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 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
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002351 wastewater Substances 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 23
- 238000009858 zinc metallurgy Methods 0.000 claims abstract description 22
- 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
- 239000000203 mixture Substances 0.000 claims description 21
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- 239000011593 sulfur Substances 0.000 claims description 15
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000000460 chlorine Substances 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 9
- 229910052801 chlorine Inorganic materials 0.000 claims description 9
- 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
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000000205 computational method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 21
- 238000009854 hydrometallurgy Methods 0.000 description 19
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 239000003546 flue gas 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
- 238000011084 recovery Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- 230000000694 effects Effects 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
- 239000011133 lead Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000005070 sampling Methods 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
- 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
- 230000002411 adverse Effects 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
- 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
- 230000003247 decreasing effect Effects 0.000 description 1
- QNDQILQPPKQROV-UHFFFAOYSA-N dizinc Chemical compound [Zn]=[Zn] QNDQILQPPKQROV-UHFFFAOYSA-N 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000284 extract Substances 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
- 230000009931 harmful effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000005272 metallurgy 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
- 238000005453 pelletization Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000004064 recycling 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
- 238000005728 strengthening Methods 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 utilize rotary kiln device to dispose the multiple method containing zinc hazardous waste simultaneously, belong to the process technical field extracting zinc in metallurgical production, including zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, zinc vertical retorting slag, refining six kinds of hazardous wastes on zinc of lead Water Quenching Slag, is mixed and added into coke powder by six kinds containing at least three kinds in zinc hazardous waste and provides calorific value；The mass percent of calcium can adjust by adding Calx；The present invention possesses following beneficial effect: optimizing the various unfavorable factor containing zinc hazardous waste becomes contributing factors, has saved production cost.Achieve the residual zinc of slag, the reduction of carbon residue, decrease knot kiln that rotary kiln occurs in course of reaction and slag etch refractory lining obtains phenomenon；Decrease high need to being pre-dried containing zinc hazardous waste of water content low need to add water this flow chart containing zinc hazardous waste with aqueous, shorten the process cycle containing zinc hazardous waste, reduce production cost.
Description
Technical field
The present invention refers to a kind of utilize rotary kiln device to dispose the multiple method containing zinc hazardous waste simultaneously, belongs to metallurgical raw
Product extracts the process technical field of zinc.
Background technology
Well known, in the garbage that multiple chemical process and production method produce, the danger of zinc and other metals is all comprised
Danger refuse, such as zinc hydrometallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, zinc vertical retorting slag,
Pyrometallurgical smelting of lead Water Quenching Slag, smelting iron and steel blast furnace dust, zinc-containing sludge, the residues containing zinc of other non-ferrous metal metallurgies are produced in sewage disposal
Deng；Due to containing metals such as zinc, lead, ferrum, indium, stannum, bismuth, germanium, utilizing rotary kiln to dispose these containing zinc hazardous waste when,
If zinc hazardous waste minimizing and resource will be contained, the recovery of valuable metal can be realized, can reduce and eliminate environment again
Pollution, to society produce significance.
The Application comparison disposing material currently with rotary kiln device is extensive, as at cement building material, chemical industry, metallurgical neck
Territory, by temperature and the difference of oven cavity atmosphere in control rotary kiln device, processes various powdery, granular, block material, also
There is the pasty material that admittedly mixes for treatment fluid.Under duty, in rotary kiln device burner hearth in addition to the burning of fuel,
Also having the physics of storeroom generation, chemical reaction, under the conditions of maintaining certain temperature and atmosphere, this reaction is continuously
Carry out, carry the volatile gases of certain heat and the useless flue gas of burning under kiln tail dust collecting system suction function, enter kiln tail and receive
The devices such as dirt, UTILIZATION OF VESIDUAL HEAT IN, gas cleaning, carry out material recycle and heat energy utilization；Solid material in kiln is in the revolution rotated
Move to kiln hood direction in kiln, finally get rid of from kiln hood, become product or waste residue.Prior art suffers from the drawback that and inconvenience:
1., when utilizing rotary kiln device to process the hazardous waste containing zinc, entering into the material in rotary kiln burner hearth needs to control necessarily
Composition, make the material of stable components that various reaction to occur in burner hearth；2. next to that the construction features of rotary kiln device, material
By the not same-action 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
The effect of material can be differed by degree distribution band.Due to various hazardous wastes except containing the compositions such as zinc, indium, stannum, bismuth, germanium, moisture content with
Outward, possibly together with the impurity such as lead, calcium, silicon, ferrum, sulfur, the difference of these impurity contents, rotary kiln device can be brought the biggest shadow
Ring, as inwall ties kiln, affect the hazardous waste treating capacity of rotary kiln device；The recoverable metal response rate can be caused the most again to drop
Low；Sometimes melted furnace charge can corrode kiln body refractory material, reduces the burner hearth life-span.The various chemical analysis containing zinc hazardous waste,
Physical specification character is different: blast furnace dust is containing zinc and moisture is low, granularity is little, and iron content is high；Zinc hydrometallurgy Zinc in Leaching Residue
Height, water content is high, high containing silicon dioxide, fine size；With slag iron content, calcic, aqueous height in zinc hydrometallurgy, the high general revolution of moisture
When kiln is disposed containing zinc dangerous waste material, material composition is wayward, when being particularly disposed several or a kind of material, only considers
Zinc content and moisture, the composition such as calcic, silicon, ferrum seldom considers.The present invention utilizes the various composition containing zinc hazardous waste special
Point, carries out a certain proportion of dispensing, it is achieved rotary kiln device disposes the method for hazardous waste.
Described zinc hydrometallurgy leached mud, except in ferrum with slag, blast furnace ironmaking gas ash, waste water process neutralize slag, zinc vertical retorting
Slag, pyrometallurgical smelting of lead Water Quenching Slag the main chemical compositions mass percent containing zinc hazardous waste as shown in table 1:
Zinc hydrometallurgy leached mud and except in ferrum and slag containing zinc mass percent about 10%, but iron-holder and water content quality hundred
Proportion by subtraction is 11.32%, 31.02% and 27.42%, 42.11% the most respectively.In like manner, each kind containing zinc hazardous waste is different,
Each main component also differs greatly.
Can classify as follows from the listed chemical composition containing zinc hazardous waste of table 1:
1, zinc content:
High zinc hazardous waste: zinc hydrometallurgy removes in ferrum and slag, blast furnace gas ash, refining lead Water Quenching Slag；
Low zinc hazardous waste: zinc hydrometallurgy leached mud, waste water process and neutralizes slag, zinc vertical retorting slag.
2, iron-holder:
High ferro hazardous waste: zinc hydrometallurgy except in ferrum and slag, waste water process neutralize slag, blast furnace gas ash, zinc vertical retorting slag,
Refining lead Water Quenching Slag；
Low ferrum hazardous waste: zinc hydrometallurgy leached mud.
3, calcium content:
High calcium hazardous waste: waste water processes and neutralizes slag, refining lead Water Quenching Slag；
Low calcium hazardous waste: zinc hydrometallurgy leached mud, zinc hydrometallurgy remove in ferrum and slag, blast furnace gas ash, zinc vertical retorting slag.
4, silicon content:
High silicon hazardous waste: refining lead Water Quenching Slag；
Low silicon hazardous waste: zinc hydrometallurgy leached mud, zinc hydrometallurgy are except processing neutralize slag, blast furnace watt with slag, waste water in ferrum
This ash, zinc vertical retorting slag.
5, chlorinty:
High chlorine hazardous waste: waste water processes and neutralizes slag, high chlorine gas ash；
Low chlorine hazardous waste: zinc hydrometallurgy leached mud, zinc hydrometallurgy remove in ferrum 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 processing neutralize slag with slag, waste water in ferrum；
Low moisture hazardous waste: blast furnace dust, zinc vertical retorting slag, refining lead Water Quenching Slag.
High cadmia, high scum, high calcium slag, high white residue, high chlorine slag and high grain slag six kind is drawn according to above-mentioned sorting technique
Type.
Utilize rotary kiln device to dispose containing zinc hazardous waste, typically require into furnace charge index as follows: 1, containing zinc quality hundred
Proportion by subtraction 8 12%；Low containing zinc, reduce the response rate of zinc；High containing zinc, fire box temperature can be made too high, cause knot kiln, affect rotary kiln
Working condition.2, weight of iron degree is typically at 20-35%, and iron content is low, and the utilization on follow-up kiln slag brings impact,
Particularly it is reduced by efficiency.3, calcium mass percentage content is 4 8%, and calcic is high, and the slag of burner hearth reaction zone can be made to melt
Temperature raises, and increases energy consumption, and kiln wall refractory consumption rate strengthens.4, silicon dioxide quality degree is 25 35%, siliceous
Height, can make the slag melt temperature of burner hearth reaction zone reduce, make slag be bonded together, affect the volatilization of valuable metal.5, sulfur
Mass percent 0.2 13%, sulfur-bearing is high, can affect the recovery of the valuable metals such as zinc, too increases what kiln exit gas purified
Pressure.6, carbon, carbon content is high, it is possible to reduce the coking coal consumption of rotary kiln device.7, biodiversity percentage ratio is 14 20%；Water
Divide high, processed need to be dried in advance, shorten reacting in rotary kiln strip length, reduce kiln exit gas temperature；Moisture is low, in a large number
Granular material enters dust collecting system with flue gas, affects treating capacity and zinc oxide product quality.8, granularity 5-15mm, granularity is little, needs
Pelletizing, in kiln on reaction zone, reduce the breathability of furnace charge, material reaction is bad, reduces the volatility of valuable metal, grain
Degree is big, needs broken.
Rotary kiln device disposes the fuel used containing zinc hazardous waste and reducing agent is coke grain and coal, and its main component is such as
Shown in table 2:
The smeltery of certain scale now, rotary kiln device, as supporting process equipment, reclaims valuable metal, and it processes
Material component is stable so that technology condition, processing method all comparative maturities.The smeltery that some scales are less, its output
The hazardous waste containing zinc need to be transported to special rotary kiln device and process the facility of hazardous waste and be disposed, similarly, this
A little rotary kiln device disposal facilities are due to the hazardous waste source instability processed, kind and complicated component.Special collection and place
Put the rotary kiln device containing zinc hazardous waste or factory, be usually individually to one, material that two kind of character is close carries out at mixing
Reason.Such mode, meeting of the technical conditions being difficult to take into account in rotary kiln device burner hearth, or granularity or moisture or material
Zinc, ferrum, lead, calcium, silicon, magnesium all can be to producing harmful effect in kiln.Comparatively speaking, individual processing or two kinds of mixed processing, hold
The harm easily brought has: rotary kiln device output slag is high containing zinc, carbon residue, causes the waste of resource and the increase of production cost；
Two is that some contain possibly together with heavy metals such as arsenic, antimony, lead, cadmiums in zinc hazardous waste, and slag residual quantity is high or innoxious conversion journey
Spend low, environment can be brought pollution and impact；Three is the life-span affecting rotary kiln kiln body refractory material；Four is that kiln body ties kiln, shadow
Ring treating capacity；Five is the workload strengthening stock preparation system, adds production cost.
Summary of the invention
It is an object of the invention to provide and a kind of utilize rotary kiln device to dispose the multiple method containing zinc hazardous waste simultaneously,
Improve the response rate of zinc, reduce rotary kiln device and dispose the production cost containing zinc hazardous waste, thus overcome prior art not
Foot.
The present invention is achieved through the following technical solutions, including zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash,
Waste water processes and neutralizes slag, zinc vertical retorting slag, refining six kinds of hazardous wastes on zinc of lead Water Quenching Slag, contains in zinc hazardous waste extremely by six kinds
Few three kinds are mixed and added into coke powder offer calorific value；The mass percent of calcium can adjust by adding Calx；
Control rotary kiln and enter stove index, containing zinc mass percent 8 12%, leaded mass percent < 1.5%, weight of iron percentage ratio
Content typically at 20-35%, calcium mass percentage content 4 8%, silicon dioxide quality degree 25 35%, sulfur
Mass percent is 0.2 13%, and biodiversity percentage ratio is 14 22%, chloride mass percent < 4%, and FeO:CaO:
SiO2=45:20:35；Granularity 5-15mm；The mass percent of coke powder is 30～40%, calorific value be 1500～1800 kilocalories/kilogram.
Respectively the hazardous waste computational methods on zinc are as follows:
(1). set zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, zinc vertical retorting slag, refining lead
Water Quenching Slag, coke powder, the gross mass of Calx are respectively Ma, Mb, Mc, Md, Me, Mf, Mg, Mh；The most each self-corresponding dry weight be Ma ',
Mb’、Mc’、Md’、Me’、Mf’、Mg’、Mh’；
(2). setting zinc and account for the quality of Ma ' dry weight as ma1, it is ma2 that lead accounts for the quality of Ma ' dry weight, and ferrum accounts for the quality of Ma ' dry weight and is
Ma3, it is ma4 that calcium accounts for the quality of Ma ' dry weight, and it is ma5 that silicon dioxide accounts for the quality of Ma ' dry weight, and sulfur accounts for the quality of Ma ' dry weight and is
Ma5, it is ma6 that moisture accounts for the quality of Ma ' dry weight, and it is ma7 that chlorine accounts for the quality of Ma ' dry weight；
It is Wa1 that known zinc accounts for the mass percent of Ma gross weight, and it is Wa2 that lead accounts for the mass percent of Ma gross weight, and ferrum accounts for Ma gross weight
Mass percent is Wa3, and it is Wa4 that calcium accounts for the mass percent of Ma gross weight, and silicon dioxide accounts for the mass percent of Ma gross weight and is
Wa5, it is Wa6 that sulfur accounts for the mass percent of Ma gross weight, and it is Wa7 that moisture accounts for the mass percent of Ma gross weight, and chlorine accounts for the matter of Ma gross weight
Amount percentage ratio is Wa8；
(3) then the quality of zinc is ma1=Ma ' × Wa1% in Ma；
In like manner trying to achieve mb1 to mh1, calculate the charge quality percentage ratio y1 of zinc, what y1 should meet enters stove standard；
If the proportion scale that Ma, Mb, Mc, Md, Me, Mf, Mg, Mh add is Xa1 to Xh1, obtain the value of Xa1 to Xh1 in y1
Scope；
(4). obtain the span of Xa2 to Xh2 in y2 by that analogy, the span of Xa8 to Xh8 to y8；
(5). traversal Xa1 to Xa8, take the public span of Xa1 to Xa8, i.e. the proportion scale of Ma is Xa '；
In like manner obtain the proportion scale of Ma to Mh for going out Xb ' to Xh '；
(6). take zinc metallurgy leached mud Xa ' %, except in ferrum and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, waste water process neutralize slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, Calx Xh ' % mixing.
The present invention comprises the following steps:
Step 1, pretreatment, detection zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, perpendicular tank
Zinc metallurgy slag, refining lead Water Quenching Slag, coke powder, the quality of Calx, composition, granularity；The various hazardous wastes containing zinc are individually stored up, and marks
Know；And carry out sieving and crushing by big for granularity and the block zinc hazardous waste that contains；
Step 2, dispensing, will each hazardous waste dispensing mix homogeneously on zinc；
And meet following mass percentage content standard: zinc 8～12%；Ferrum 20～35%；Calcium 4～8%；Silicon dioxide 25～35%；
Sulfur 0.2～13%；Lead < 1.5%；Cl<4%;Moisture 14～22%, fixed carbon caloric value 1500～1800 kilocalorie/kilogram；And FeO:
CaO:SiO2=45:20:35；Granularity 5～15mm；
Take zinc metallurgy leached mud Xa ' %, except in ferrum and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, waste water processes and neutralizes slag Xd ' %, perpendicular
Tank zinc metallurgy slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, Calx Xh ' % mixing；
Step 3, roasting collects, and feeds roasting in rotary kiln, generation by meeting the mixed material of step 2 standard by feeding device
Oxide powder and zinc and metallization slag；Collect oxide powder and zinc from kiln tail dust chamber, discharge metallization slag from kiln hood.
The present invention possesses following beneficial effect: utilize various containing zinc hazardous waste and the chemical composition of coking coal powder with physical property
Matter, when solving the hazardous waste that rotary kiln device disposes different types, owing in rotary kiln device burner hearth, composition controls not conform to
Reason bring as unstable in temperature, furnace charge melt temperature is low or furnace charge melt temperature high, Temperature Distribution band is unreasonable, kiln slag containing zinc,
The problems such as carbon containing is high.By 3 kinds and the above method being disposed containing dispensing while of zinc hazardous waste, optimize various containing zinc danger
The unfavorable factor of danger refuse becomes contributing factors, it is achieved feed material component and the optimum combination of character of rotary kiln device, both
Make use of the useful one side of the various compositions of every kind of material, turn avoid the one side producing harm, saved production cost.Realize
The residual zinc of slag, the reduction of carbon residue, decrease knot kiln that rotary kiln occurs in course of reaction and slag etch refractory lining obtains
Phenomenon；On the other hand, high need to being pre-dried and aqueous low needing containing zinc hazardous waste containing zinc hazardous waste of water content is decreased
Add water this flow chart, shortens the process cycle containing zinc hazardous waste, reduces production cost.
Detailed description of the invention
From background technology, in the technique that existing rotary kiln device is disposed containing zinc hazardous waste, it is the most all one
Plant or two kinds of hazardous waste mixed processing on zinc, due to the independent mixed composition of one or both materials, it is impossible to eliminate each
Plant the adverse effect bringing technology condition and equipment when rotary kiln device may be disposed by component.
The present invention provide a kind of to several containing proportioning mixing while zinc hazardous waste, by various each containing zinc hazardous waste
Kind composition is when individually disposing, and the unfavorable factor that may bring becomes useful factor, so that zinc metal recovery rate is high, produces
With low cost containing zinc dangerous waste disposal process.
The present invention includes zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, perpendicular tank refining
Cadmia, refining six kinds of hazardous wastes on zinc of lead Water Quenching Slag, be mixed and added into coke powder by six kinds containing at least three kinds in zinc hazardous waste
Calorific value is provided；The mass percent of calcium can adjust by adding Calx；
Control rotary kiln and enter stove index, containing zinc mass percent 8 12%, leaded mass percent < 1.5%, weight of iron percentage ratio
Content typically at 20-35%, calcium mass percentage content 4 8%, silicon dioxide quality degree 25 35%, sulfur
Mass percent is 0.2 13%, and biodiversity percentage ratio is 14 22%, chloride mass percent < 4%, and FeO:CaO:
SiO2=45:20:35；Granularity 5-15mm；The mass percent of coke powder is 30～40%, calorific value be 1500～1800 kilocalories/kilogram.
Respectively the hazardous waste computational methods on zinc are as follows:
(1). set zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, zinc vertical retorting slag, refining lead
Water Quenching Slag, coke powder, the gross mass of Calx are respectively Ma, Mb, Mc, Md, Me, Mf, Mg, Mh；The most each self-corresponding dry weight be Ma ',
Mb’、Mc’、Md’、Me’、Mf’、Mg’、Mh’；
(2). setting zinc and account for the quality of Ma ' dry weight as ma1, it is ma2 that lead accounts for the quality of Ma ' dry weight, and ferrum accounts for the quality of Ma ' dry weight and is
Ma3, it is ma4 that calcium accounts for the quality of Ma ' dry weight, and it is ma5 that silicon dioxide accounts for the quality of Ma ' dry weight, and sulfur accounts for the quality of Ma ' dry weight and is
Ma5, it is ma6 that moisture accounts for the quality of Ma ' dry weight, and it is ma7 that chlorine accounts for the quality of Ma ' dry weight；
It is Wa1 that known zinc accounts for the mass percent of Ma gross weight, and it is Wa2 that lead accounts for the mass percent of Ma gross weight, and ferrum accounts for Ma gross weight
Mass percent is Wa3, and it is Wa4 that calcium accounts for the mass percent of Ma gross weight, and silicon dioxide accounts for the mass percent of Ma gross weight and is
Wa5, it is Wa6 that sulfur accounts for the mass percent of Ma gross weight, and it is Wa7 that moisture accounts for the mass percent of Ma gross weight, and chlorine accounts for the matter of Ma gross weight
Amount percentage ratio is Wa8；Ginseng is shown in Table 3,
(3) then the quality of zinc is ma1=Ma ' × Wa1% in Ma；
In like manner trying to achieve mb1 to mh1, calculate the charge quality percentage ratio y1 of zinc, what y1 should meet enters stove standard；
If the proportion scale that Ma, Mb, Mc, Md, Me, Mf, Mg, Mh add is Xa1 to Xh1；
Obtain the span of Xa1 to Xh1 in y1；
(4). obtain the span of Xa2 to Xh2 in y2 by that analogy, the span of Xa8 to Xh8 to y8；
(5). traversal Xa1 to Xa8, take the public span of Xa1 to Xa8, i.e. the proportion scale of Ma is Xa '；
In like manner obtain the proportion scale of Ma to Mh for going out Xb ' to Xh '；
(6). take zinc metallurgy leached mud Xa ' %, except in ferrum and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, waste water process neutralize slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, Calx Xh ' % mixing.
The present invention comprises the following steps:
Step 1, pretreatment, detection zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, perpendicular tank
Zinc metallurgy slag, refining lead Water Quenching Slag, coke powder, the quality of Calx, composition, granularity；The various hazardous wastes containing zinc are individually stored up, and marks
Know；And carry out sieving and crushing by big for granularity and the block zinc hazardous waste that contains；
Step 2, dispensing, will each hazardous waste dispensing mix homogeneously on zinc；
And meet following mass percentage content standard: zinc 8～12%；Ferrum 20～35%；Calcium 4～8%；Silicon dioxide 25～35%；
Sulfur 0.2～13%；Lead < 1.5%；Cl<4%;Moisture 14～22%, fixed carbon caloric value 1500～1800 kilocalorie/kilogram (kcal/
Kg)；And FeO:CaO:SiO2=45:20:35；Granularity 5～15mm；
Take zinc metallurgy leached mud Xa ' %, except in ferrum and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, waste water processes and neutralizes slag Xd ' %, perpendicular
Tank zinc metallurgy slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, Calx Xh ' % mixing；
Step 3, roasting collects, and feeds roasting in rotary kiln, generation by meeting the mixed material of step 2 standard by feeding device
Oxide powder and zinc and metallization slag；Collect oxide powder and zinc from kiln tail dust chamber, discharge metallization slag from kiln hood.
Instantiation is as a example by certain rotary kiln device is disposably disposed containing zinc hazardous waste 100 tons, to disposing and profit simultaneously
Extracting the processes of zinc with four kinds containing zinc hazardous waste to illustrate, the more hazardous waste containing zinc of the daily disposal of this device is
The blast furnace dust of iron-smelter, next to that zinc hydrometallurgy leached mud, except in ferrum and slag, gas mud, Calx are additives, it is main
Chemical composition index is as shown in table 4:
Calculate according to the proportion scale of the present invention, calculate the group under the various ratios composition that gross weight is 100 tons of material combinations respectively
Divide content.
According to the component content of different ratio combinations, determine best of breed ratio, as shown in table 5:
The ratio of each material determined is in 100 tons of mixed materials, blast furnace ash 35 tons, zinc hydrometallurgy leached mud 28 tons, and wet method is refined
With iron dross removing 4 tons in zinc, blast furnace gas mud 11 tons, 2 tons of Calx, 20 tons of coal.After dispensing, each constituent mass degree is
Zn8.42%, moisture 20.94%, containing fixed carbon 24.97%(caloric value 24.97% × 6000kcal/kg=1500kcal.),
FeO23.86%,CaO7.5,SiO2The each composition of 12.39%, Cl1.99%. reaches charge quality span of control.
Uniformly mixing with loader, then to the compound sampling sampling observation after mixing mixing, chemical examination detects each component
Mass percentage content: Zn8.42%, moisture 20.94%, containing fixed carbon 24.97%(caloric value 24.97% × 6000kcal/kg=
1500kcal.), FeO23.86%, CaO7.5, SiO212.39%,Cl1.99%。
Disc feeding storehouse is joined, by circle containing zinc hazardous waste and coking coal powder compound by meet quality control requirement
Dish batcher is expected on travelling belt.
Compound feeds in rotary kiln device, be once dried by dryer section, the preheating of preheating section, the roasting of conversion zone
Reduction, generates Second-rate zinc oxide powder product and metallization slag.Wherein the temperature of dryer section is 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 compound except provide reduction zinc element carbonaceous reducing agent in addition to, also provide for maintain reaction temperature 1100 DEG C-
The thermal source of 1200 DEG C.Zinc element is restored by carbon at reaction zone and becomes zinc fume, zinc fume again with the oxygen generation oxygen in flue gas
Change reaction, produce zinc oxide fine particles, under the suction function of kiln tail system, sequentially enter kiln tail expansion chamber, a secondary settlement
Room and bagroom.Expansion chamber containing zinc grade about 20%, dispensing can't be again returned to as product utilization
After system dispensing, entering the roasting again of rotary kiln device, the oxide powder and zinc zinc grade of secondary settlement room is more than 50%, and cloth bag is received
The zinc grade of dirt room is more than 65%. the oxide powder and zinc product spiral mixer that two kinds are collected is stirred mixing, after mixing
Containing zinc grade 50%, become product after packaging and sell or utilize.
Carried by rotary kiln device containing zinc hazardous waste and postponing at zinc, wherein the oxide of iron content the most also part
Reduction forms metallization slag, discharges from kiln hood.In order to prevent metallic iron the most oxidized, the metallization that kiln hood is discharged
Slag carries out Water Quenching, then recycles in subsequent handling.
According to the method described above several hazardous wastes on zinc are processed, finally give time oxidation containing zinc grade 50%
Zinc product；Metallize later slag iron content 45%, containing zinc 1%, carbon containing 10%, can reclaim ferrum and carbon by magnetic separation, become
For blast furnace, the raw material of converter, mine tailing can be as brick-making raw material.Or the raw material directly as cement plant.Achieve and endanger containing zinc
The harmlessness disposing of danger refuse and recycling.
Claims (3)
1. utilize rotary kiln device to dispose a multiple method containing zinc hazardous waste, including zinc metallurgy leached mud, except in ferrum simultaneously
With slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, zinc vertical retorting slag, refining six kinds of hazardous wastes on zinc of lead Water Quenching Slag, and it is special
Levy and be:
It is mixed and added into coke powder by six kinds containing at least three kinds in zinc hazardous waste and calorific value is provided；The mass percent of calcium can be passed through
Add Calx to adjust；
Control rotary kiln and enter stove index, containing zinc mass percent 8 12%, leaded mass percent < 1.5%, weight of iron percentage ratio
Content typically at 20-35%, calcium mass percentage content 4 8%, silicon dioxide quality degree 25 35%, sulfur
Mass percent is 0.2 13%, and biodiversity percentage ratio is 14 22%, chloride mass percent < 4%, and FeO:CaO:
SiO2=45:20:35；Granularity 5-15mm；The mass percent of coke powder is 30～40%, calorific value be 1500～1800 kilocalories/kilogram.
The most according to claim 1 a kind of utilize rotary kiln device to dispose the multiple method containing zinc hazardous waste simultaneously, its
Feature is, according to described enter stove standard, the respectively hazardous waste computational methods on zinc of interpolation are as follows:
(1). set zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, zinc vertical retorting slag, refining lead
Water Quenching Slag, coke powder, the gross mass of Calx are respectively Ma, Mb, Mc, Md, Me, Mf, Mg, Mh；The most each self-corresponding dry weight be Ma ',
Mb’、Mc’、Md’、Me’、Mf’、Mg’、Mh’；
(2). setting zinc and account for the quality of Ma ' dry weight as ma1, it is ma2 that lead accounts for the quality of Ma ' dry weight, and ferrum accounts for the quality of Ma ' dry weight and is
Ma3, it is ma4 that calcium accounts for the quality of Ma ' dry weight, and it is ma5 that silicon dioxide accounts for the quality of Ma ' dry weight, and sulfur accounts for the quality of Ma ' dry weight and is
Ma5, it is ma6 that moisture accounts for the quality of Ma ' dry weight, and it is ma7 that chlorine accounts for the quality of Ma ' dry weight；
It is Wa1 that known zinc accounts for the mass percent of Ma gross weight, and it is Wa2 that lead accounts for the mass percent of Ma gross weight, and ferrum accounts for Ma gross weight
Mass percent is Wa3, and it is Wa4 that calcium accounts for the mass percent of Ma gross weight, and silicon dioxide accounts for the mass percent of Ma gross weight and is
Wa5, it is Wa6 that sulfur accounts for the mass percent of Ma gross weight, and it is Wa7 that moisture accounts for the mass percent of Ma gross weight, and chlorine accounts for the matter of Ma gross weight
Amount percentage ratio is Wa8；
(3) then the quality of zinc is ma1=Ma ' × Wa1% in Ma；
In like manner trying to achieve mb1 to mh1, calculate the charge quality percentage ratio y1 of zinc, what y1 should meet enters stove standard；
If the proportion scale that Ma, Mb, Mc, Md, Me, Mf, Mg, Mh add is Xa1 to Xh1；
Obtain the span of Xa1 to Xh1 in y1；
(4). obtain the span of Xa2 to Xh2 in y2 by that analogy, the span of Xa8 to Xh8 to y8；
(5). traversal Xa1 to Xa8, take the public span of Xa1 to Xa8, i.e. the proportion scale of Ma is Xa '；
In like manner obtain the proportion scale of Ma to Mh for going out Xb ' to Xh '；
(6). take zinc metallurgy leached mud Xa ' %, except in ferrum and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, waste water process neutralize slag
Xd ' %, zinc vertical retorting slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, Calx Xh ' % mixing.
The most according to claim 1 and 2 a kind of utilize rotary kiln device to dispose the multiple method containing zinc hazardous waste simultaneously,
It is characterized in that comprising the following steps:
Step 1, pretreatment, detection zinc metallurgy leached mud, except in ferrum and slag, blast furnace ironmaking gas ash, waste water processes and neutralizes slag, perpendicular tank
Zinc metallurgy slag, refining lead Water Quenching Slag, coke powder, the quality of Calx, composition, granularity；The various hazardous wastes containing zinc are individually stored up, and marks
Know；And carry out sieving and crushing by big for granularity and the block zinc hazardous waste that contains；
Step 2, dispensing, will each hazardous waste dispensing mix homogeneously on zinc；
And meet following mass percentage content standard: zinc 8～12%；Ferrum 20～35%；Calcium 4～8%；Silicon dioxide 25～35%；
Sulfur 0.2～13%；Lead < 1.5%；Cl<4%;Moisture 14～22%, fixed carbon caloric value 1500～1800 kilocalorie/kilogram；And FeO:
CaO:SiO2=45:20:35；Granularity 5～15mm；
Take zinc metallurgy leached mud Xa ' %, except in ferrum and slag Xb ' %, blast furnace ironmaking gas ash Xc ' %, waste water processes and neutralizes slag Xd ' %, perpendicular
Tank zinc metallurgy slag Xe ' %, refining lead Water Quenching Slag Xf ' %, coke powder Xg ' %, Calx Xh ' % mixing；
Step 3, roasting collects, and feeds roasting in rotary kiln, generation by meeting the mixed material of step 2 standard by feeding device
Oxide powder and zinc and metallization slag；Collect oxide powder and zinc from kiln tail dust chamber, discharge metallization slag 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 |
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| 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 |
| CN114540628A (en) * | 2022-01-20 | 2022-05-27 | 云南云铜锌业股份有限公司 | Method for treating zinc dipping slag, zinc smelting gypsum slag and blast furnace gas ash |
| 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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