CN103389256A - Method for measuring metal aluminum content in garbage incineration slag - Google Patents
Method for measuring metal aluminum content in garbage incineration slag Download PDFInfo
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- CN103389256A CN103389256A CN2013103182030A CN201310318203A CN103389256A CN 103389256 A CN103389256 A CN 103389256A CN 2013103182030 A CN2013103182030 A CN 2013103182030A CN 201310318203 A CN201310318203 A CN 201310318203A CN 103389256 A CN103389256 A CN 103389256A
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- incineration slag
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- slag
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Abstract
The invention discloses a method for measuring metal aluminum content in garbage incineration slag. The method comprises the following steps of fully dispersing garbage incineration slag in a saturated Ca(OH)2 alkali liquor, measuring the volume of discharged hydrogen through a drainage method, and calculating the metal aluminum content in the garbage incineration slag. The method has the excellent effects that the measurement result is accurate, and the repetition rate is high; the measurement cost is low, and only an analytically pure Ca(OH)2 reagent is required to be purchased in conventional measurement; in addition to the obtained metal aluminum content, the gas-forming property of metal aluminum in the saturated Ca(OH)2 solution can be measured, and thus beneficial reference can be provided for production of aerated concrete by taking the garbage incineration slag as a gas-forming agent.
Description
Technical field
The invention belongs to solid waste resource recovery and utilize field, be specifically related to a kind of method of measuring metallic aluminium content in waste incineration slag.
Background technology
Due to the domestic waste complicated component, its processing mode is mainly take landfill as main at present.But along with further developing of social city, garbage discharge amount is increasing, and the bed rearrangement city will almost be enclosed among rubbish.Owing to there being the material that calorific value is arranged in a large number in house refuse, therefore can emit heat after burning, thereby can be used to generating, volume has significantly reduction simultaneously.But this has brought again the processing problem of cinder from refuse incineration.Cinder from refuse incineration mainly is divided into flying dust and slag, and wherein the former contains a certain amount of bioxin, generally believes that toxicity is relatively large, generally buries as main after stabilization method is processed, and the latter is relatively low, has the potentiality of recycling.
Through in " middle National IP Network ", carrying out literature search, China is existing several pieces of research papers about urban domestic garbage incinerator slag building resource at present.Scientific paper " domestic waste incineration residue is as the research of cement mixture " (" South China Science ﹠ Engineering University's journal (natural science edition) ", 12 phases in 2009, Xie Yan etc.) study domestic waste incineration residue (abbreviation slag) as the impact of composite material on cement performance, investigated simultaneously the environmental safety of corresponding goods.Result shows: slag to mix stability on cement, consumptive use of water normal consistence and impact setting time little, but with the increase of volume, intensity descends.When volume is 7.5%, can meet the production requirement of PO42.5 cement.Research shows that mixing slag makes composite material, can not bring harm to environment and human health.Scientific paper " character of waste incineration slag reaches the concrete crushing strength impact " (" highway ", 07 phase in 2010, Zhang Rui etc.) studied the engineering properties of residential quarter, Harbin City MSW Incineration Plant slag, its composition, grating, water-intake rate, apparent density and crush index have been tested, test shows that garbage slag physics complicated components, grating are good, compare with the normal concrete aggregate, water-intake rate is high, apparent density is little, crush index is large.Coarse aggregate in its all or part of alternative normal concrete is carried out compressive strength test research, analyzed the impact of garbage slag aggregate on concrete crushing strength.Scientific paper " the waste incineration slag activity excitation reaches the impact on cement performance " (" Wuhan University of Technology's journal ", 06 phase in 2012, prime minister Lee etc.) study the urban domestic garbage incinerator slag as the impact of cement mixture on cement performance by outer doping, investigated simultaneously the environmental safety of slag activity excitation and blast furnace cement.Result shows, still can reach the requirement of P.O.32.5 manufacture of cement when in P.O.42.5 cement, the slag volume reaches 25%.When slag volume 35%, the heavy metal limit stripping content of mortar specimen, far below the national standard maximum permissible concentration, can not bring secondary pollution to environment.Scientific paper " waste incineration slag is for the production of the discussion of portland slag cement " (" Guangdong building materials ", 08 phase in 2012, Lin Bingmei) think the production of the cement industrial residue of dissolving in a large number, this for the problem that solves dregs of incinerator for municipal garbage provides may.By the contrast of waste incineration slag and blast-furnace slag chemical composition between the two, both chemical compositions are very approaching as can be known, and waste incineration slag is feasible for the production of portland slag cement; On the other hand, to the waste incineration slag minimizing, innoxiously also will play huge impetus.
In addition, through granted patent is retrieved, China has obtained some application technology patents to the research of waste incineration slag.China's granted patent document (CN1792942 that " utilizes domestic waste incineration residue to produce the method for masonry cement ", application number: CN200510120665.7), " method of one way of life incinerator slag aggregate comprehensive utilization " (CN102515599A, application number: CN201110391113.5), " the trench backfill material take waste incineration slag as raw material and production method and application " (CN102515600A, application number: CN201110405686.9) with " utilizing domestic waste incineration residue to produce the method for Portland clinker " (CN101386480, application number: CN200810199156.1) etc. patent mainly concentrates on the building materials association area.
Above research mainly concentrates on two aspects: (1) utilizes the pozzolanic reaction activity of waste incineration slag or fills effect, uses it for cement concrete supplementary cementitious material composition; (2) waste incineration slag is used for gathering materials concrete batching or pave the way.But the metallic aluminium composition in the waste incineration slag has all been ignored in above research.Contain a certain amount of aluminum products in house refuse, can be enriched in after burning in the refuse incineration slag slag, general content is between 0.2-1%.Metallic aluminium, with after alkaline matter mixes, has hydrogen and emits.Therefore can consider that waste incineration slag is made foaming agent produces gas concrete.But at first need to know the metallic aluminium content in waste incineration slag.
at present existing patent documentation has proposed the assay method of metallic aluminium in the different matrix: Chinese granted patent document " method for determining metal aluminum content in steelmaking exothermal agent " (CN102507853A, application number: CN201110315933.6), " metallic aluminium content in watery hydrochloric acid leaching-EDTA volumetric determination steel-making exothermic mixture " (CN102507854A, application number: CN201110316246.6), " assay method of metallic aluminium in a kind of aluminium slag making materials " (CN102269708A, application number: CN201010201591.0) with " assay method of alundum (Al2O3) and metallic aluminium in the AD15 deoxidizer " (CN101349651, application number: what CN200810048907.X) adopt is all solution compleximetries, and be not suitable for the metallic aluminium content of measuring in waste incineration slag.This is because waste incineration slag contains many kinds of metal ions, as Al
3+, Fe
2+, Ca
2+And Zn
2+Deng, can the phase mutual interference while adopting these methods and affect the mensuration precision.China granted patent document " a kind of method and device that detects metallic aluminium content in burning ash " (CN103091200A, application number: CN201210591714.5) proposed a kind of method and device that detects metallic aluminium content in burning ash, belong in essence drainage, but complicated operation, and the alkali lye of use is NaOH solution, with the Ca (OH) in cement system
2Alkaline environment is also inconsistent.
Therefore, find no at present the method that is fit to measure the metallic aluminium content in waste incineration slag.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, a kind of method of measuring the metallic aluminium content in waste incineration slag is provided.This invention has proposed a kind of determinator and related operating method, and is simple to operate, and result is accurate, both is fit to colleges and universities, scientific research institutions' scientific research use, also is fit to factory and fast measures.
Technical scheme of the present invention is as follows:
Measure the method for metallic aluminium content in waste incineration slag, waste incineration slag is well dispersed in saturated Ca (OH)
2In alkali lye, adopt drainage to measure the hydrogen volume of emitting, and then calculate the content of metallic aluminium in waste incineration slag.
Foregoing method, preferably scheme is, described Ca (OH)
2Pure for analyzing.
Foregoing method, preferred scheme is that described waste incineration slag joins Ca (OH)
2Before in alkali lye, through levigate.
Foregoing method, preferred scheme be, describedly levigately refers to that it is below 80 microns that waste incineration slag is milled to mean grain size.
Foregoing method, preferred scheme is that waste incineration slag joins Ca (OH)
2Before in alkali lye, through drying and processing.
Foregoing method, preferred scheme is that waste incineration slag joins Ca (OH)
2Before in alkali lye, through pre-service.
Foregoing method, preferred scheme are that described pre-service is deodorizing, deironing or screening, in order to wood, potsherd and uncombusted plastics are removed.
Measure the method for the metallic aluminium content in waste incineration slag, the method is that waste incineration slag is levigate to below 80 microns, is well dispersed in saturated Ca (OH)
2In alkali lye, the hydrogen volume (preferably measuring the hydrogen volume of emitting under 70 ℃) that adopts drainage mensuration to emit.
, through consulting scientific paper and the granted patent of having delivered at present, still do not measure the method for metallic aluminium in waste incineration slag.The present invention has following features and advantage: (1) condition is easily set up, and used unit is all more common, as flask, graduated cylinder and water-bath etc.(2) take up room little.The plane bench area can be enough.(3) operating process is convenient and swift.Can draw measurement result with interior in general 1 hour.In addition, excellent effect of the present invention also is embodied in:
1, measurement result is accurate, and fidelity factor is high.
2, cost of determination is lower.Conventional determining only need be bought and analyze pure Ca (OH)
2Reagent gets final product.
3, except obtaining metallic aluminium content, can also obtain metallic aluminium at saturated Ca (OH)
2The characteristic of getting angry in solution, can be waste incineration slag and make foaming agent and produce gas concrete useful reference is provided.
Description of drawings
Device connection diagram when Fig. 1 is drainage mensuration hydrogen volume.Wherein 1 is thermometer; 2 is dog-house; 3 is tracheae; 4 is (three mouthfuls) flask; 5. water-bath; 6 is graduated cylinder; 7 is large beaker; 8. water.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing, but the scope of protection of present invention is not limited to the scope that embodiment represents.
Saturated Ca (OH)
2The preparation of solution: under 25 ℃, take 2g calcium hydroxide in 1L distilled water, stir 30min, then filter, get clear liquid.The solubility with temperature of calcium hydroxide in water raises and descends, and therefore during the calcium hydroxide saturated solution when needing certain design temperature under, solution is heated to design temperature, and then filtration gets final product.
Embodiment 1 measures the method for metallic aluminium content in waste incineration slag, and waste incineration slag is well dispersed in saturated Ca (OH)
2In alkali lye, adopt drainage to measure the hydrogen volume of emitting, and then calculate the content of metallic aluminium in waste incineration slag.Described Ca (OH)
2Pure for analyzing.Described waste incineration slag joins Ca (OH)
2Before in alkali lye, through levigate, being milled to mean grain size is below 80 microns.
Adopt drainage to measure hydrogen volume, device as shown in Figure 1.Connect device according to Fig. 1, the escape pipe end is immersed in water, then both hands are held flask, observe and have or not bubble to overflow, if any illustrating that impermeability is good, as without needing, carefully investigating to guarantee the impermeability of device.
Before test hydrogen generating capacity, water-filled 200mL graduated cylinder is stood upside down and inserts in the 1000mL large beaker, and with the as far as possible close graduated cylinder of gas outlet end bottom.With saturated Ca (OH)
2Solution is poured flask into, alkali lye to 80 ℃ in the heating water bath flask.Add 10g left and right waste incineration slag, rapid cover lid, the hydrogen that produces will move down because drainage makes liquid level in graduated cylinder, during reading, liquid level in the interior liquid level of graduated cylinder and beaker is maintained an equal level, and the volume of discharging water in graduated cylinder is the volume of generation gas.
The hydrogen volume that produces of test different time, finish to test 1% the time when last reading and a front reading error.Attention as far as possible strengthens gas conduit length, and out hot gas can farthest be cooled to room temperature from flask like this.
Embodiment 2 measures the method for metallic aluminium content in waste incineration slag, and basic step is with embodiment 1, but alkali lye to 70 ℃ in the heating water bath flask, and the waste incineration slag that uses wet row's mode to obtain, waste incineration slag is through 105 ℃ of drying and processings.
Embodiment 3 measures the method for metallic aluminium content in waste incineration slag, and basic step is with embodiment 1, but alkali lye to 60 ℃ in the heating water bath flask.In the present embodiment, waste incineration slag has larger stink and remaining wood, potsherd, ferrous material and uncombusted plastics etc., so, also to pass through the pre-service such as deodorizing, deironing, screening before levigate, this pre-service is that wood, potsherd and uncombusted plastics are removed.
Principle of the present invention: waste incineration slag contains a certain amount of metallic aluminium composition, metallic aluminium and Ca (OH)
2The solution reaction equation is as follows: Ca (OH)
2+ 2Al+2H
2O=Ca (AlO
2)
2+ 3H
2↑.Under standard conditions, 1 mole of shared volume of any ideal gas all is about 22.4 liters.Therefore,, as long as can accurately detect the volume of generation hydrogen, just can calculate according to above-mentioned chemical equation the content of metallic aluminium., if environment temperature and standard conditions during test are inconsistent, need to utilize PV=nRT to proofread and correct volume.
Of the present inventionly complete the subsidy that has obtained state natural sciences fund (No.51272222), Shandong Province's key scientific and technological projects (No.2011GGX10705) and Yantai City's key scientific and technological projects (No.2012ZH249) project.
Claims (7)
1. the method for metallic aluminium content in the mensuration waste incineration slag, is characterized in that, waste incineration slag is well dispersed in saturated Ca (OH)
2In alkali lye, adopt drainage to measure the hydrogen volume of emitting, and then calculate the content of metallic aluminium in waste incineration slag.
2. method according to claim 1, is characterized in that, described Ca (OH)
2Pure for analyzing.
3. method according to claim 1, is characterized in that, described waste incineration slag joins Ca (OH)
2Before in alkali lye, through levigate.
4. method according to claim 1, is characterized in that, describedly levigately refers to that it is below 80 microns that waste incineration slag is milled to mean grain size.
5. method according to claim 1, is characterized in that, waste incineration slag joins Ca (OH)
2Before in alkali lye, through drying and processing.
6. method according to claim 1, is characterized in that, waste incineration slag joins Ca (OH)
2Before in alkali lye, through pre-service.
7. method according to claim 6, is characterized in that, described pre-service is deodorizing, deironing or screening, in order to wood, potsherd and uncombusted plastics are removed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808629A (en) * | 2014-03-07 | 2014-05-21 | 周长祥 | Phase analysis method for metal zinc in hot-dip galvanized ashes |
| CN109507385A (en) * | 2018-12-07 | 2019-03-22 | 中国工程物理研究院化工材料研究所 | A kind of active aluminium content measuring device and its application method |
| CN111943136A (en) * | 2020-07-29 | 2020-11-17 | 浙江工业大学 | Method for producing hydrogen by directly utilizing household garbage incineration slag |
| CN112730147A (en) * | 2020-12-16 | 2021-04-30 | 浙江工业大学 | Method for analyzing content of nonferrous metals in waste incineration slag according to different particle size grading |
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|---|---|---|---|---|
| DE3612699C1 (en) * | 1986-04-15 | 1987-04-09 | Wehrle E Gmbh | Device for determining the ammonium nitrogen content |
| CN101694449A (en) * | 2009-10-19 | 2010-04-14 | 重庆大学 | Testing device for carbonization resistance of cement based materials and testing method |
| CN201780246U (en) * | 2010-07-26 | 2011-03-30 | 长江大学 | Carbonate content measurement instrument employing pressure-volume method |
| CN102539279A (en) * | 2011-12-09 | 2012-07-04 | 首钢水城钢铁（集团）有限责任公司 | Analytical method for single substance calcium in core-spun calcium line |
| CN103091200A (en) * | 2012-12-30 | 2013-05-08 | 浙江工业大学 | Method and device for detecting metal aluminum content in burned ash |
-
2013
- 2013-07-18 CN CN2013103182030A patent/CN103389256A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3612699C1 (en) * | 1986-04-15 | 1987-04-09 | Wehrle E Gmbh | Device for determining the ammonium nitrogen content |
| CN101694449A (en) * | 2009-10-19 | 2010-04-14 | 重庆大学 | Testing device for carbonization resistance of cement based materials and testing method |
| CN201780246U (en) * | 2010-07-26 | 2011-03-30 | 长江大学 | Carbonate content measurement instrument employing pressure-volume method |
| CN102539279A (en) * | 2011-12-09 | 2012-07-04 | 首钢水城钢铁（集团）有限责任公司 | Analytical method for single substance calcium in core-spun calcium line |
| CN103091200A (en) * | 2012-12-30 | 2013-05-08 | 浙江工业大学 | Method and device for detecting metal aluminum content in burned ash |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808629A (en) * | 2014-03-07 | 2014-05-21 | 周长祥 | Phase analysis method for metal zinc in hot-dip galvanized ashes |
| CN109507385A (en) * | 2018-12-07 | 2019-03-22 | 中国工程物理研究院化工材料研究所 | A kind of active aluminium content measuring device and its application method |
| CN111943136A (en) * | 2020-07-29 | 2020-11-17 | 浙江工业大学 | Method for producing hydrogen by directly utilizing household garbage incineration slag |
| CN112730147A (en) * | 2020-12-16 | 2021-04-30 | 浙江工业大学 | Method for analyzing content of nonferrous metals in waste incineration slag according to different particle size grading |
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Application publication date: 20131113 |