CN107363074A - A kind of aluminium cell carbonaceous materials recycling is alternative coal-fired method - Google Patents

A kind of aluminium cell carbonaceous materials recycling is alternative coal-fired method Download PDF

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CN107363074A
CN107363074A CN201710600311.5A CN201710600311A CN107363074A CN 107363074 A CN107363074 A CN 107363074A CN 201710600311 A CN201710600311 A CN 201710600311A CN 107363074 A CN107363074 A CN 107363074A
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nitrate
coal
catalytic oxidant
aluminium cell
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CN107363074B (en
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尹小林
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Changsha Zichen Technology Development Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00Operations not covered by a single other subclass or by a single other group in this subclass
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00Solid fuels
    • C10L5/02Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04Raw material of mineral origin to be used; Pretreatment thereof

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Abstract

A kind of aluminium cell carbonaceous materials recycling is alternative coal-fired method, is comprised the following steps:(1)It is granulated detoxification:Aluminium cell carbonaceous waste material is crushed, atomized spray detoxification agent solution, detoxification material must be granulated;(2)Activation:Catalytic oxidant is added, homogenizing is modified,;Or catalytic oxidant and lime are added, add water stirring or roll over mixed, oxidation dealkalize, filtering or filtering washing, dry,;Or catalytic oxidant, lime, sodium hydroxide are added, add water stirring or roll over mixed, oxidation dealuminzation dealkalize, filtering or filtering washing, dry,;Or molten processing is soaked using overcritical or liquid carbon dioxide, catalytic oxidant homogeneous modification is added in carbon dry mash,.The alternative fire coal that the present invention regenerates is suitable with semibituminous coal, anthracite calorific value, average about 5000kcal/kg, can be used as alternative fire coal;The inventive method technique is simple, and energy consumption is low, cost is low, suitable industrialized production.

Description

A kind of aluminium cell carbonaceous materials recycling is alternative coal-fired method
Technical field
It is alternative coal-fired method the present invention relates to a kind of materials recycling, and in particular to a kind of aluminium cell carbonaceous waste material It is regenerated as alternative coal-fired method.
Background technology
At present, the development of the electrolytic aluminium yield in China and the world is swift and violent.According to statistics, in by the end of December, 2016, China's electrolytic aluminium Aluminium smelter enterprise be completed production capacity up to 4369.8 ten thousand tons, run production capacity up to 3673.9 ten thousand tons.With the increasing of electrolytic aluminium yield Add, caused solid waste in electrolytic process, such as waste cathode carbon block, scrap anode carbon granule, useless refractory brick, useless insulating brick, useless guarantor The yield of warm clinker also increases sharply, wherein only the caused negative electrode that gives up is up to 250,000 tons every year for China's aluminum electrolysis industry, in recent years still The accumulative volume of cargo in storage for having more than 400 ten thousand tons fills without suitable area, and the waste cathode carbon block actual amount of whole world stockpiling is up to ten million Ton.
Aluminium cell carbonaceous waste material includes caused waste cathode carbon block and scrap anode carbon granule during electrolytic aluminium etc., predominantly Waste cathode carbon block.The main component of waste cathode of aluminum electrolytic cell carbon block is C, also contains Na3AlF6、CaF2、NaF、AlF3、α-Al2O3 Deng, wherein carbon content be 50~70%, electrolyte fluoride be 30~50%, cyanide is about 0.2%.Do not have in aluminium electrolysis process Participate in the anode carbon granule of electrolyte in electrolysis and Electolyte-absorptive(Also known as anode breeze)Main component be with Na3AlF6Based on Sodium aluminium fluoride, α-Al2O3And C, remaining is electrolyte fluoride, wherein, carbon content is 40~60%.
Electrolytic aluminium waste cathode carbon block belongs to the high artificial material of degree of graphitization, it is well known that electrolytic aluminium negative electrode is to forge The anthracite of burning, metallurgical coke, graphite etc. are that aggregate, coal tar pitch etc. is made up of binding agent shaping and roasting, for charcoal containing aluminium cell The block class or paste class carbon product of matter liner, are graphitization or graphite carbon cellulosic material, with hardness is big, coefficient of friction is small, no Broken, extremely difficult combustion(Relative to fire coal)The characteristics of.The electrolysis temperature of modern large-scale aluminium electrolysis pre-baking tank 950~970 DEG C it Between, the electrolyte such as 1 ton of aluminium consumption about 50kg ice crystals, aluminum fluoride, magnesium fluoride are often produced, due to heat effect, chemical action, machinery Erosion effect, electro ultrafiltration, sodium and electrolyte infiltration etc. caused by fused salt reaction, chemical reaction, the negative electrode charcoal in aluminium cell Block can be damaged after using certain time, needs to carry out large repairs after typically running 4~7 years, the mainly waste cathode carbon block that removes, Waste refractory materials, useless insulation material etc., while a certain amount of anode carbon granule is also produced in electrolytic process.
For the treatment technology of the less scrap anode carbon granule of quantity, current research is concentrated mainly on is returned using floatation process Charcoal and electrolyte are received, by scrap anode carbon granule grinding to certain particle size, adds water to add collecting agent after sizing mixing, makes charcoal abundant with electrolyte Separation, so as to obtain using electrolyte as two kinds of products advocating peace based on charcoal.Electrolyte therein can back within aluminium electroloysis In groove, powdered carbon can be used for the raw material that Soderberg Anode In Aluminium Electrolysis Cells make anode mix, but processing cost is high and secondary pollution is big.
For waste cathode of aluminum electrolytic cell carbon block, at present both at home and abroad the technical method of processing waste cathode carbon block up to tens of kinds it It is more, it may be summarized to be wet method, high temperature hydro-thermal method, superhigh temperature partition method, burning partition method, fuel process and security landfill method etc..
(1)Wet method:For the main direction of studying of current internal lining of aluminium electrolytic bath, basic working procedure is grinding, water logging/alkali leaching/acid Wash, flotation, separation, drying etc..The external representative use aquation method released for M.M.Williams handles waste cathode carbon Block(Isolated thick carbon granule and fine grain electrolyte), and Austrian Lun Sihuofen aluminium manufacturers and Li Sita aluminium manufacturers of U.S. alkali The molten leaching electrolyte therein of liquid(Leachate is used for synthetic cryolite, and charcoal is used as the fuel of high temperature furnace collocation).Chalco stock Part Co., Ltd, Beijing Mine and Metallurgy General Inst, Central South University etc. have also carried out substantial amounts of research and practice, as Lu Huimin et al. is used Floatation reclaims charcoal and electrolyte, and waste cathode carbon block is crushed, obtains the powder of certain particle size after classification, adds water to be added after sizing mixing Collecting agent, to realize farthest separating for carbon and electrolyte, so as to obtain using electrolyte as advocate peace based on charcoal two kinds Product.Electrolyte therein can be backed within aluminium cell, and graphited powdered carbon can return to negative electrode production system.But It is that the toner value that method for wet separation obtains at present is not high, and resource utilization efficiency is low, and the processing power consumption such as grinding is high, place It is high to manage cost, and serious secondary pollution be present.
(2)High temperature hydro-thermal method separation method:It is most representational to be used for J.E.Dentschman and J.S.Lobos etc. More than 1200 DEG C of hot water Hydrolyze method processing waste cathode carbon block, make fluoride and the hydrogen fluoride of steam reaction generation concentration 25% molten Liquid, then aluminum fluoride is produced with synthetic method, and collect the fluorine ion in solution with gypsum.But this method investment is big, high energy consumption, Processing cost is high, and difficulty is administered in secondary pollution.
(3)Superhigh temperature separation method:External representative " AUMSET " technique for the exploitation of Alcoa companies, in powder Adding the flux such as lime in broken waste lining carbon block, blended stock is heat-treated in AUS-MELT stoves at 1300 DEG C of temperature, Lime etc. is reacted with the electrolyte in waste cathode carbon block, obtain calcirm-fluoride, sodium fluoride and aluminum fluoride, reclaim high-temperature flue gas Middle HF gases generate aluminum fluoride, make fluorine obtain solidifying to re-use, final products are glassy state slag, and the charcoal of recovery is used again In manufacture cathode material.The technique has carried out commercial Application, handles waste lining year up to 12000t, but invests big, processing energy consumption Height, processing cost are too high.It is domestic also to have research more, as CN105642649A discloses a kind of high-temperature treatment of electrolytic aluminium waste cathode Method, it is that electrolytic aluminium waste cathode carbon block is crushed to 3~15mm, then, is roasted in 2600~2800 DEG C of superhigh temperature vacuum electric furnaces Burning processing, it be nitride to volatilize fluoride therein, decompose cyanide therein, and high-temperature flue gas is by the way of water smoke absorbs Absorb again by the processing such as filtering drying, obtain can reuse fluoride, the negative electrode carbon materials after superhigh temperature roasting is through being cooled to Reach 97% carbon materials for fixed carbon content.But this method is significantly present of following problem:First, electrolytic aluminium waste cathode carbon is broken Toxic dust and toxic gas containing cyanide are produced in broken screening process;Second, it is actual to 2600~2800 DEG C for electrical heating Power consumption is very high, maintain vacuum suction power consumption it is higher, the requirement of equipment and cost are also very high;Third, 2600~2800 DEG C volatilization It is too high that fluoride gas using water smoke absorb requirement to equipment, because 1200 DEG C of water vapour can be so that calcirm-fluoride etc. to be fluorinated Thing is converted into the hydrogen fluoride of the severe corrosive of severe toxicity;Fourth, serious secondary pollution is also easy to produce, and the carbon materials reclaimed In still contain 3% or more fluoride, recycling can shorten overhaul life and uneconomical.CN106269787A discloses one kind For disposing the high temperature continous way processing method of electrolytic aluminium waste cathode, teach one kind and be crushed to electrolytic aluminium waste cathode carbon block not Particle more than 3mm, 3~100mm compound particles are made with kneadings such as pitches, then, compound particles are placed in superelevation In warm vacuum electric furnace, in not less than 2000 DEG C(2300~2600 DEG C)Continous way calcination process in superhigh temperature vacuum electric furnace, is obtained high Warm electro-forge flue gas and electrolytic aluminium waste cathode carbon granules, then high temperature electro-forge flue gas is subjected to second-time burning, completely burned volatile matter flue gas In carbon dust, carbon powder and ice crystal, it is nitride to decompose cyanide therein, after cooling, dedusting, desulphurization denitration, obtains reuse Fluoride and fixed carbon content reach 95% carbon materials.But this method is significantly present of following problem:First, electrolytic aluminium waste is cloudy Toxic dust and toxic gas containing cyanide are produced during the carbon crushing and screening of pole;Second, electrical heating to 2000~2600 DEG C its Actual power consumption is very high, maintains that the power consumption of vacuum suction is higher, and the requirement of equipment and cost are also very high;Third, after second-time burning Gas cleaning investment is high, is also easy to produce serious secondary pollution;Fourth, still contain in the carbon of 2000~2600 DEG C of electric furnace calcination processing Substantial amounts of fluoride, because more than 2497 DEG C of the boils up till of calcirm-fluoride, fluorine-containing carbon materials, which recycles, can shorten overhaul time Limit and it is uneconomical.
(3)Burn separation method:It is to use professional incinerator and fluid bed furnace technique etc., because electrolytic aluminium waste cathode carbon is different In fire coal, though calorific value is generally up to 4000~5500kcal/kg, activation energy needed for oxidation reaction is high, need to reach 1500 DEG C of height It is warm could the efficient oxidation burning, therefore combustion method is present that separating process is cumbersome, the heat time needed for after-flame is long, energy consumption is big and difficult The problem of effectively to reclaim wherein fluoride, and secondary pollution issue handling difficulty is also big.
(4)Fuel process:Because the main component of electrolytic aluminium waste cathode carbon block is charcoal, and the theoretical combustion heat of completely burned is typically up to More than 4000kcal/kg, high reaches 5500kcal/kg equivalent to conventional anthracitic calorific value, so, domestic and international substantial amounts of skill Art worker has carried out unremitting effort, and effect pole is not so good as people's will so far.The domestic method as fuel has China YouSe metal The identification for the Shandong Aluminum Co., Ltd. factory " recycling of waste cathode of aluminum electrolytic cell carbon block " that Industry Corporation organized on November 16th, 1988 Achievement.Specific method is:" Shandong Aluminum Plant in alumina producing, using waste and old cathode carbon block it is levigate after as desulfurizing agent and substitute Part anthracite is added in alumina rotary kiln, produces alumina sintering block.Contained fluoride salt changes into sinter leaching Insoluble calcirm-fluoride enters red mud, and red mud replaces fluorescent mineralizer for manufacture of cement dispensing when preparing cement." still, This method grinding energy is high, the discharge capacity increase of pernicious gas in flue gas.Further to solve the turning sludge into fuel profit of waste cathode carbon block With problem, research institute of Shandong branch company of Chinese Aluminium Co., Ltd poplar meeting guest waits the cement producing line in Shandong Aluminum Plant enterprising In-depth study practice is gone, with calorific value 21MJ/kg(5024kcal/kg)Waste cathode carbon block be applied to cement producing line work Industry is tested, and is specifically first crushed waste cathode carbon block, by the maximum ratio dosage of clinker 5kg waste cathode carbon blocks per ton(Convert and be About less than the 3% of coal consumption), together grinding is incorporated in coal mill in grinding coal dust, and conclusion (of pressure testing) is clinker per ton by the useless the moon of 5kg Pole carbon block is to clinker quality without visible influences(Application study light metal of the waste cathode carbon blocks such as Yang Huibin in manufacture of cement, 2nd phase in 2008, P59-64.).Yang Huibin etc. is high using cement kiln internal reaction temperature, carbon block residence time on stream The condition such as long, makes the harmful substance in waste cathode carbon block carry out decomposition displacement in hot environment, and it is ripe to be finally solidificated in cement In material, while attempt to reducing the consumption of coal by the use of the carbon in waste cathode carbon block as fuel.But its still have safety problem, Addition problem and the influence problem to production, after all, waste cathode carbon are not coal-fired, the extremely difficult combustions of charcoal in waste cathode carbon block.So And the defects of real is not the problem of fluorine is exceeded in the erosion of refractory material caused by fluoride and flue gas, because calcium aluminum fluoride The production of cement also ensure that refractory material safety and flue gas in fluorine it is not exceeded, normal cement kiln preheaters system visitor after all There is the preheater for realizing that Pyatyi exchanges trapping with Alkaline high-strength powder in sight;Nor the problem of alkali content is high, because often Ton clinker consumption coal normally only 0.15~0.18t, the electrolyte in a small amount of cathode carbon pieces is mainly aluminum fluoride, calcirm-fluoride, fluorine aluminium Sour sodium, fluoaluminic acid magnesium, sodium fluoride only account on a small quantity, dosage hour it is limited with the total alkali content in cryolite and sodium fluoride, typically Influence to cement later strength is limited.Therefore, Shandong Aluminum Plant so far still can not be using negative electrode charcoal normal use as alternative combustion The true cause of coal is:First the mill efficiency of coal mill is influenceed, is second that the graphitic carbon of low activity seriously reduces the whole of coal dust Body combustibility, the serious normal combustion efficiency that have impact on coal dust, it is impossible to which the timely and effective exothermic charcoal element of burning is fallen into Clinker entrains into the strong reduction of generation in powder, have impact on kiln system operating mode, have impact on clinker quality.Obviously, prior art is not still Can be using electrolytic aluminium waste cathode carbon block as effective alternative fuel.
(5)Security landfill method:Because high energy consumption, high cost and secondary pollution problems be present in existing processing method, because This, the problem of environmental pollution of electrolytic aluminium waste cathode carbon block is never effectively solved, and causes most aluminium electrolytics Cathode carbon pieces are still thrown aside, and use the security landfill method of high cost at present or mainly.And the current landfill generally used, stockpiling Method handles electrolytic aluminium solid waste method, high risks can be caused to environment, even completely by the harmless of hazardous waste Lasting contact scar will be produced by changing landfill, and cause ample resources waste.
In addition, electrolytic aluminium solid waste is due to containing substantial amounts of soluble fluoride and a small amount of cyanide(Predominantly Cymag and the sodium ferricyanide), belong to danger wastes, must be dealt carefully with.And under the conditions of prior art, electrolytic aluminium factory is universal Landfill, the stacked arrangement of use handle these solid waste, and contained soluble fluoride and cyanide can pass through wind, day The effect transfer that shine, drenches with rain is volatized into air, or be mixed into rivers with rainwater, permeate the ground contaminated soil and underground water, right Animals and plants and human body produce very big infringement, destroy ecological environment, influence Agro-ecology balance, make crop production reduction, and it endangers will It is long-term.Processing for cyanide in waste cathode carbon block, treatment technology mainly have weak acid dissolving+polysulfide to be converted into sulphur For the method for cyanate and metal thiophosphate thing, manganese ion+ultraviolet catalytic oxidation method, ozone and sodium hypochlorite co-oxidation side Method, high temperature chlorination processing method, high-temperature oxidation method, biochemical process processing cyanide technology.But at these existing cyanides Reason technical method is cumbersome, cost is high, and secondary pollution be present.CN101811695A discloses a kind of from electrolytic aluminium waste cathode carbon block The method of middle recovery graphite, it is that the process such as acidleach removes fluoride therein again using grinding, water logging, flotation, separates and recovers it In carbon materials drying to obtain refined graphite powder.But this method process is numerous and diverse, secondary pollution is big, high energy consumption, the stone of recovery Black fine powder impurity content is high.
To sum up, the outstanding problem as aluminum electrolysis industry general character, it is necessary to it is harmless to break through electrolytic aluminium solid waste as early as possible Change industrialization technology problem.The characteristic of electrolytic aluminium solids waste material how is utilized to implement recycling, it is especially safe , low energy consumption, low cost regeneration as alternative fire coal be the technical method for being worth a researching and solving problem.
The content of the invention
The technical problems to be solved by the invention are to overcome drawbacks described above existing for prior art, there is provided one kind regeneration institute It is high to obtain alternative coal-fired safety and environmental protection, non-secondary pollution, calorific value, regeneration technology is simple, low energy consumption, low cost, suitable industrialization The aluminium cell carbonaceous materials recycling of production is alternative coal-fired method.
The technical solution adopted for the present invention to solve the technical problems is as follows:A kind of aluminium cell carbonaceous materials recycling be for For the method that property is coal-fired, comprise the following steps:
(1)It is granulated detoxification:Aluminium cell carbonaceous waste material is crushed, broken while, atomized spray is equivalent to aluminium cell charcoal Matter waste material quality 1~10%(It is preferred that 3~8%)Detoxification agent solution, and with the dedusting of catalytic oxidizer negative pressure extracting crushing system Waste gas, detoxification material must be granulated;
(2)Activation:By step(1)Gained granulation detoxification material is placed in blender, is added under agitation equivalent to aluminium cell Carbonaceous waste material quality 0.6~8.0%(It is preferred that 2~6%)Catalytic oxidant, homogenizing be modified, obtain alternative fire coal;
Or by step(1)Gained granulation detoxification material is placed in in the leaching groove or tank that stir or roll over mixing device, adds phase respectively When in aluminium cell carbonaceous waste material quality 1~8%(It is preferred that 2~6%)Catalytic oxidant and 2~20%(It is preferred that 5~15%)Stone Ash, and add equivalent to 1~10 times of aluminium cell carbonaceous waste material quality(It is preferred that 2~6 times)Water stirring or roll over mixed, oxidation is de- Alkali, filtering or filtering washing, obtain dealkalize activated carbon slag, dry to moisture≤15%, homogenizing and are modified, obtain alternative fire coal;
Or by step(1)Gained granulation detoxification material is placed in in the leaching groove or tank that stir or roll over mixing device, adds phase respectively When in aluminium cell carbonaceous waste material quality 1~8%(It is preferred that 2~6%)Catalytic oxidant, 2~20%(More preferably 5~15%)Stone Ash, 2~20%(More preferably 5~15%)Sodium hydroxide, and add equivalent to 1~10 times of aluminium cell carbonaceous waste material quality(More It is preferred that 4~8 times)Water stirring or roll over mixed, aoxidize dealuminzation dealkalize, filtering or filtering washing, obtain the activated carbon slag of dealuminzation alkali, dry To moisture≤15%, homogenizing is modified, and obtains alternative fire coal;
Or by step(1)Gained granulation detoxification material leaching is dissolved in 0~80 DEG C(More preferably 10~50 DEG C)Overcritical or liquid two Process in carbonoxide, then in separating obtained carbon dry mash, add equivalent to carbon dry mash quality 0.5~6%(It is more excellent Select 2~5%)Catalytic oxidant carry out mixing homogeneous modification, obtain alternative fire coal.Using known overcritical or liquid dioxy Change the molten method of carbon-impregnated to be processed granulation detoxification material.
Preferably, step(1)In, granularity≤25mm after waste material is broken.
Preferably, step(1)In, the crumbling method is hammering, extruding or impact type crush.The attrition crushing is preferred Double roller squash type crushes.Electrolytic aluminium waste cathode carbon block has the characteristics of hardness is big, coefficient of friction is small, non-breakable, and aluminium electroloysis Carbon-containing part and other compositions in groove waste and old cathode carbonaceous material is there is the feature at obvious interface, using energy-efficient Extruding/impact type crumbling method, first save comminution energy conssumption and be subsequently used as possible grinding energy during fuel applications, two It is then the irregular granular material containing a large amount of cracks by waste cathode carbon block fragmentation, the absorption and depth for being easy to cyanide detoxicant are oozed Enter reaction.
Preferably, step(1)In, the main component of the aluminium cell carbonaceous waste material is waste cathode carbon block and/or useless sun Pole carbon granule, wherein, inanimate matter content 20~50%, carbon content 50~80%, 3800~6000kcal/kg of calorific value.
Preferably, step(1)In, the detoxicant for can efficient digestion cyanide hypertoxicity material, be ferrate Detoxicant, bichromate detoxicant, thiosulfate detoxicant, perchlorate detoxicant, hydroxide detoxicant, hypochlorite One or more in detoxicant or chlorine dioxide etc..For the main Toxic in electrolytic aluminium waste cathode carbon block be Cymag and The sodium ferricyanide, the characteristics of main violent in toxicity is Cymag, carried out during broken using efficient cyanide detoxicant and When and efficiently remove toxicity processing, can efficient digestion cyanide hypertoxicity.
It is highly preferred that the ferrate detoxicant be one kind in potassium ferrate, ferrate-lithium or Na2Fe04 etc. or Several, the bichromate detoxicant is one kind or several in potassium bichromate, sodium dichromate, dichromic acid cobalt or dichromic acid acid anhydride etc. Kind, the thiosulfate detoxicant is sodium thiosulfate and/or potassium thiosulfate etc., and the perchlorate is lithium perchlorate And/or cobaltous perchlorate etc., the hydroxide are the one or more in cobalt hydroxide, sodium hydroxide or potassium hydroxide etc., institute Hypochlorite is stated as sodium hypochlorite and/or calcium hypochlorite etc..
It is further preferred that the detoxicant is commercially available ZC-XJ1 type detoxification agent solutions(That is ferrate detoxicant With hypochlorite detoxicant with mass ratio 1:1 saturated solution prepared), ZC-XJ10 type detoxification agent solutions(I.e. thiosulfate is gone The saturated solution that toxic agent is prepared), ZC-XJ3 type detoxification agent solutions(That is bichromate detoxicant and hypochlorite detoxicant is with quality Than 1:1 saturated solution prepared), ZC-XJ5 type detoxification agent solutions(That is perchlorate detoxicant and hypochlorite detoxicant is with matter Measure ratio 1:1 saturated solution prepared)Or ZC-XJ13 type detoxification agent solutions(The saturated solution that i.e. hypochlorite detoxicant is prepared). Above-mentioned detoxification agent solution is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd..
The detoxification agent solution is the solution that the one or more in the detoxicant are prepared.
Preferably, step(1)In, the detoxification agent solution is first by sodium hypochlorite addition equivalent to its quality 1.5~5.5 Times(More preferably 1.8~3.0 times)Water dissolving, then potassium ferrate and potassium hydroxide are pressed 1:0.8~1.2 mass ratio is dissolved in secondary The saturated solution formed in sodium chlorate solution.
Step(1)In, can be while dust suppression by atomized spray so that detoxification agent solution penetrates into broken granular material In hole crack, the resolution of cyanide toxicity is realized;And catalytic oxidizer can implement catalysis oxidation decomposition to body containing dicyanogen, it is ensured that The security of broken granulation detoxification process.
Preferably, step(2)In, the catalytic oxidant is bichromate catalytic oxidant, metavanadate catalysis oxidation One or more in agent, ferrate catalytic oxidant, perchlorate catalytic oxidant or nitrate catalytic oxidant.For Electrolytic aluminium waste cathode carbon block is graphitization or graphite carbon cellulosic material, and carbon structure stablizes extremely difficult combustion, must be effective up to 1500 DEG C of ability The characteristics of oxidation, use of the present invention can destroy or activate the netted carbon structure of graphite, and can effectively facilitate charcoal element oxidation reaction Catalytic oxidant is modified to it, first, the activation that charcoal element oxidizing fire reacts in electrolytic aluminium waste cathode carbon block is greatly reduced Can, second implement dynamic multiphase catalytic oxidation combustion, it is substituted coal-fired application.
It is highly preferred that the bichromate catalytic oxidant is one in ammonium dichromate, strontium dichromate or lithium bichromate etc. Kind or it is several, the metavanadate catalytic oxidant be ammonium metavanadate, the ferrate catalytic oxidant be ferric acid cobalt with/ Or ferrate-lithium etc., the perchlorate are lithium perchlorate and/or cobaltous perchlorate etc., the nitrate catalytic oxidant is nitric acid Cerium, lanthanum nitrate, ferric nitrate, copper nitrate, lithium nitrate, nitric acid tin, nitric acid antimony, cobalt nitrate, zirconium nitrate, nickel nitrate, platinum nitrate, nitric acid One or more in palladium or rhodium nitrate etc..
It is further preferred that the catalytic oxidant is ZC-7 type liquid catalytic oxidants(That is perchlorate catalysis oxygen Agent and nitrate catalytic oxidant are with mass ratio 2:The saturated solution that 1 mixture is prepared), ZC-3 type powdery catalytic oxidants (That is bichromate catalytic oxidant and nitrate catalytic oxidant is with mass ratio 1:1 mixture), ZC-9 type catalytic oxidants (That is metavanadate catalytic oxidant and nitrate catalytic oxidant is with mass ratio 1:1 mixture)Or ZC-11 type catalysis oxidations Agent(That is ferrate catalytic oxidant and nitrate catalytic oxidant is with mass ratio 1:1 mixture).Above-mentioned catalytic oxidant It is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd..
It is highly preferred that step(2)In, the catalytic oxidant be ammonium dichromate, metavanadic acid ammonia, lithium perchlorate, cerous nitrate, Cobalt nitrate, nickel nitrate in mass ratio 2:0.8~1.2:0.8~1.2:1.5~2.5:1.5~2.5:2.5~3.5 ratio is dissolved in Saturated solution made of water.
Step(2)In, in addition to catalytic oxidant, the raw material of other additions is auxiliary material.The lime includes hydroxide Calcium and/or calcium oxide.When containing lime in auxiliary material, under the conditions of strong oxidizing solution, calcium hydroxide and the sodium fluoride containing alkali, The reactions such as cryolite are converted into calcirm-fluoride and dealkalize, and oxidized activating carbon and catalysis oxidation element are attached into carbon materials On;When containing lime and sodium hydroxide in auxiliary material, under strong oxidizing property solvent condition, calcium hydroxide and sodium hydroxide collaboration, With the reactions such as the sodium fluoride containing alkali, cryolite, aluminum oxide be converted into calcirm-fluoride, water-soluble sodium metaaluminate, sodium hydroxide and take off Aluminium dealkalize, and oxidized activating carbon materials and catalysis oxidation element is attached on carbon materials.
Preferably, step(2)In, water lotion is recyclable to be used to leach, and the recyclable concentrated base processed of filtrate containing alkali or carries aluminium concentrated base.
Preferably, step(2)In, after catalytic oxidant is added or after drying, add and given up equivalent to aluminium cell carbonaceous Expect the % of quality 1~20(More preferably 2~10 %)Calcium oxide and/or magnesia, and/or equivalent to aluminium cell carbonaceous waste material matter Measure 1~50 %(More preferably 10~40 %)Hydrocarbon-containiproducts combustable organic thing, then be homogenized modification;It is described to contain nytron The combustable organic thing of thing is the one or more in coal tar, useless molding powder, waste Crumb rubber or husk etc..
Technical scheme is as follows used by of the invention another solves its technical problem:A kind of aluminium cell carbonaceous waste material is again Life is alternative coal-fired method, after aluminium cell carbonaceous waste material is crushed into granularity≤25mm, is added equivalent to its quality 0.8 ~8.0%(More preferably 3~7%)Catalytic oxidant and 1~50%(More preferably 20~40%)The organic of hydrocarbon-containiproducts can Combustion things, homogenizing are modified, and obtain alternative fire coal.
Preferably, the catalytic oxidant is bichromate catalytic oxidant, metavanadate catalytic oxidant, ferrate One or more in catalytic oxidant, perchlorate catalytic oxidant or nitrate catalytic oxidant etc.;The bichromate Catalytic oxidant is the one or more in ammonium dichromate, strontium dichromate or lithium bichromate etc., the metavanadate catalysis oxidation Agent is ammonium metavanadate, and the ferrate catalytic oxidant is ferric acid cobalt and/or ferrate-lithium etc., and the perchlorate is height Lithium chlorate and/or cobaltous perchlorate etc., the nitrate catalytic oxidant are cerous nitrate, lanthanum nitrate, ferric nitrate, copper nitrate, nitric acid One or more in lithium, nitric acid tin, nitric acid antimony, cobalt nitrate, zirconium nitrate, nickel nitrate, platinum nitrate, palladium nitrate or rhodium nitrate etc..
Preferably, the combustable organic thing of the hydrocarbon-containiproducts is in coal tar, useless molding powder, waste Crumb rubber or husk etc. One or more.
Beneficial effects of the present invention are as follows:
(1)1 ton of aluminium cell carbonaceous waste material can be processed into 1 ton of alternative fire coal, and used with general industry kiln semibituminous coal, Anthracite calorific value is suitable, average about 5000kcal/kg, can be used as alternative fire coal;
(2)During for manufacture of cement, in the case of other controlling of production process parameter constants, experiment display:Coal grinds yield phase When kiln yield is without visible change, and kiln system operating mode is normal, and without strongly reducing atmosphere in kiln, clinker is without strong reduction feature, clinker knot grain Take a turn for the better, the early stage of clinker and later strength are synchronously improved, and data statistics coal consumption is controlled in online and declines up to 7.5%, kiln tail discharge Oil repellent detection has no change in flue gas, is not detected by cyanide;For fluidized bed furnace, rotary kiln, tunnel cave fire coal in use, coal It is suitable to grind yield, for kiln yield without visible change, limekiln system condition is normal, and without strongly reducing atmosphere in kiln, data are controlled in online It is suitable to count coal consumption, Oil repellent, which detects, in kiln tail discharge flue gas has no change, and detection lime quality is not detected by without visible change Cyanide;
(3)The alternative coal-fired safety and environmental protection of aluminium cell carbonaceous materials recycling of the present invention, non-secondary pollution;
(4)The inventive method technique is simple, and has ready-made equipment can be selected, and energy consumption is low, cost is low, and treating capacity is big, suitable work Industry metaplasia is produced.
Embodiment
With reference to embodiment, the invention will be further described.
Raw material used in the embodiment of the present invention or chemical reagent, unless otherwise specified, obtained by routine business approach .
Embodiment 1
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the block carbonaceous waste material stored up in certain aluminium manufacturer storehouse, detection Aggregate sample inanimate matter content 28.49%, carbon content 71.51%, calorific value 5615kcal/kg;Detoxicant is used in the present embodiment ZC-XJ1 type detoxification agent solutions(That is ferrate detoxicant and hypochlorite detoxicant is with mass ratio 1:1 saturation prepared is molten Liquid), catalytic oxidant used in the present embodiment is ZC-7 type liquid catalytic oxidants(That is perchlorate catalytic oxidant and nitre Hydrochlorate catalytic oxidant is with mass ratio 2:The saturated solution that 1 mixture is prepared), it is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd..
(1)It is granulated detoxification:The aluminium cell carbonaceous waste material of bulk is crushed to by particle diameter using double roller squash type crushing system ≤ 8mm, broken while, atomized spray equivalent to aluminium cell carbonaceous waste material quality 8% ZC-XJ1 type detoxification agent solutions, And catalysis oxidation decomposition is implemented to body containing dicyanogen with the dust-removing waste gas of catalytic oxidizer negative pressure extracting crushing system, obtain granulation detoxification Material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in blender, is added under agitation equivalent to aluminium cell The ZC-7 type liquid catalytic oxidants of carbonaceous waste material quality 6%, homogenizing are modified, and obtain alternative fire coal.
Alternative fire coal obtained by the present embodiment is used for certain Ф 3.5 × 54m new type nonaqueous cement production line(Used in the factory Raw coal be volatile matter 16.7% semibituminous coal, calorific value 5587kcal/kg, raw coal sulfur content 3.7%), will be substituted obtained by the present embodiment Property coal-fired and raw coal in mass ratio 1:1 ratio is incorporated in coal mill grinding together.
In the case of other controlling of production process parameter constants, experiment display:Coal mill yield is suitable, and kiln yield is without visible Change, kiln system operating mode is normal, and kiln is interior to be taken a turn for the better without strongly reducing atmosphere, clinker without strong reduction feature, clinker knot grain, and number is controlled in online Coal consumption declines 7.3% according to statistics, and kiln tail discharges Oil repellent detection in flue gas and has no change, is not detected by cyanide.
Detection gained clinker setting time is normal, and 3 days compression strength improves 3.3MPa, and compression strength improves within 28 days 3.9MPa.Through thinking:It is due to that bringing into for fluoride cooperates with caused fluorine sulphur ore deposit with sulphur in raw coal in alternative fire coal Agent, burn-ability is improved, cause clinker knot graininess to take a turn for the better and decline with coal consumption, and because bringing into for fluorine generates appropriate fluoaluminic acid Calcium mineral cause the early stage of clinker and later strength synchronously to improve.
This experiment shows that the waste cathode carbon block material of activated modification has the combustibility suitable with semibituminous coal, can made For alternative fire coal.
Embodiment 2
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the mixing bulk carbonaceous waste material stored up in certain aluminium manufacturer storehouse (Containing anodic carbon residue), detection aggregate sample inanimate matter content 34.17%, carbon content 65.83%, calorific value 5169kcal/kg;It is of the invention real Applying detoxification agent solution used in example is:Sodium hypochlorite is first added to water of 2 times equivalent to its quality to dissolve, then by potassium ferrate 1 is pressed with potassium hydroxide:1 mass ratio is dissolved in the saturated solution formed in liquor natrii hypochloritis;It is catalyzed used in the present embodiment Oxidant is ZC-3 type powdery catalytic oxidants(Bichromate catalytic oxidant and nitrate catalytic oxidant are with mass ratio 1:1 Mixture), it is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd.;Auxiliary material used in the present embodiment is city The useless molding powder sold.
(1)It is granulated detoxification:Using paddle type mill crushing system will mix block aluminium cell carbonaceous waste material be crushed to particle diameter≤ 5mm, broken while, atomized spray equivalent to aluminium cell carbonaceous waste material quality 6% detoxification agent solution, and to be catalyzed oxygen The dust-removing waste gas for changing device negative pressure extracting crushing system implements catalysis oxidation decomposition to body containing dicyanogen, must be granulated detoxification material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in blender, is added under agitation equivalent to aluminium cell The ZC-3 type powdery catalytic oxidants of carbonaceous waste material quality 3.5% and the useless modeling equivalent to aluminium cell carbonaceous waste material quality 15% Powder, homogenizing are modified, and obtain alternative fire coal.
Alternative fire coal obtained by the present embodiment is used for certain Ф 3 × 46m new type nonaqueous cement production line(It is former used in the factory Coal be volatile matter 8.3% anthracite, calorific value 5349kcal/kg, raw coal sulfur content 1.8%), by alternative combustion obtained by the present embodiment Coal and raw coal in mass ratio 1:1 ratio is incorporated in coal mill grinding together.
In the case of other controlling of production process parameter constants, experiment display:Coal mill yield is suitable, and kiln yield is without visible Change, kiln system operating mode is normal, and kiln is interior to be taken a turn for the better without strongly reducing atmosphere, clinker without strong reduction feature, clinker knot grain, and number is controlled in online Coal consumption declines 5% according to statistics, and kiln tail discharges Oil repellent detection in flue gas and has no change, is not detected by cyanide.
Detection clinker setting time is normal, and 3 days compression strength improves 2.9MPa, and compression strength improves 1.8MPa within 28 days.Through Think:It is due to that bringing into for fluoride cooperates with caused fluorine sulphur mineralizer with sulphur in raw coal in alternative fire coal, improves Burn-ability, causes that clinker knot graininess takes a turn for the better and coal consumption declines, and because bringing into for fluorine generates appropriate calcium aluminum fluoride mineral and caused The early stage and later strength for making clinker synchronously improve.
This experiment shows that the aluminium cell carbonaceous waste material of activated modification has the combustibility suitable with anthracite, can As alternative fire coal.
Embodiment 3
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the mixing bulk carbonaceous waste material stored up in certain aluminium manufacturer storehouse (Containing anodic carbon residue), detection inanimate matter content 34.17%, carbon content 65.83%, calorific value 5169kcal/kg;The present embodiment is used Detoxicant be ZC-XJ10 type detoxification agent solutions(The saturated solution that thiosulfate detoxicant is prepared), the present embodiment used Catalytic oxidant be ZC-3 type powdery catalytic oxidants(Bichromate catalytic oxidant and nitrate catalytic oxidant are with quality Than 1:1 mixture), it is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd.;Used in the present embodiment Auxiliary material is commercially available calcium hydroxide, calcium oxide and waste Crumb rubber.
(1)It is granulated detoxification:Using paddle type mill crushing system will mix block aluminium cell carbonaceous waste material be crushed to particle diameter≤ 10mm, broken while, atomized spray equivalent to aluminium cell carbonaceous waste material quality 5% ZC-XJ10 type detoxification agent solutions, And catalysis oxidation decomposition is implemented to body containing dicyanogen with the dust-removing waste gas of catalytic oxidizer negative pressure extracting crushing system, obtain granulation detoxification Material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in in the leaching groove for rolling over mixing device, adds phase under agitation When in the ZC-3 type powdery catalytic oxidants and 10.4% calcium hydroxide of aluminium cell carbonaceous waste material quality 5%, add equivalent to The water of 4 times of aluminium cell carbonaceous waste material quality rolles over mixed leaching oxidation dealkalize, and filtering washing obtains dealkalize activated carbon slag, and detection alkali takes off Except rate 81.4%, filtrate containing alkali reclaims concentrated base processed, and water lotion is reclaimed for leaching, dry dealkalize activated carbon slag to moisture≤10%, Add equivalent to the calcium oxide of dealkalize activated carbon slag amount 5% and mixed equivalent to the waste Crumb rubber of dealkalize activated carbon slag amount 20% Compound, homogenizing are modified, and obtain alternative fire coal.
Alternative fire coal obtained by the present embodiment is used for certain Ф 3.5 × 54m new type nonaqueous cement production line(Used in the factory Raw coal be volatile matter 8.3% anthracite, calorific value 5349kcal/kg, raw coal sulfur content 3.1%), will be alternative obtained by the present embodiment Coal-fired and raw coal in mass ratio 1:1 ratio is incorporated in coal mill grinding together.
In the case of other controlling of production process parameter constants, experiment display:Coal mill yield is suitable, and kiln yield is without visible Change, kiln system operating mode is normal, and kiln is interior to be taken a turn for the better without strongly reducing atmosphere, clinker without strong reduction feature, clinker knot grain, and number is controlled in online Coal consumption declines 7% according to statistics, and kiln tail discharges Oil repellent detection in flue gas and has no change, is not detected by cyanide.
Detection gained clinker setting time is normal, and 3 days compression strength improves 3.2MPa, and compression strength improves within 28 days 2.7MPa.Through thinking:It is due to that bringing into for fluoride cooperates with caused fluorine sulphur ore deposit with sulphur in raw coal in alternative fire coal Agent, burn-ability is improved, cause clinker knot graininess to take a turn for the better and decline with coal consumption, and because bringing into for fluorine generates appropriate fluoaluminic acid Calcium mineral cause the early stage of clinker and later strength synchronously to improve.
This experiment shows that the waste cathode carbon block material of activated modification has the combustibility suitable with anthracite, can made For alternative fire coal.
Embodiment 4
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the mixing bulk carbonaceous waste material stored up in certain aluminium manufacturer storehouse (Containing anodic carbon residue), detection inanimate matter content 34.17%, carbon content 65.83%, calorific value 5169kcal/kg;Institute of the embodiment of the present invention The detoxicant used is ZC-XJ10 type detoxification agent solutions(The saturated solution that thiosulfate detoxicant is prepared), the present embodiment institute The catalytic oxidant used is ZC-9 type catalytic oxidants(Metavanadate catalytic oxidant and nitrate catalytic oxidant are with quality Than 1:1 mixture), it is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd.;Used in the present embodiment Auxiliary material is commercially available calcium oxide and sodium hydroxide.
(1)It is granulated detoxification:Using paddle type mill crushing system will mix block aluminium cell carbonaceous waste material be crushed to particle diameter≤ 5mm, broken while, atomized spray equivalent to aluminium cell carbonaceous waste material quality 5% ZC-XJ10 type detoxification agent solutions, and Catalysis oxidation decomposition is implemented to body containing dicyanogen with the dust-removing waste gas of catalytic oxidizer negative pressure extracting crushing system, granulation is obtained and removes poisonous substance Material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in in the leaching can for rolling over mixing device, adds phase under agitation When the ZC-9 types catalytic oxidant in aluminium cell carbonaceous waste material quality 4.6%, equivalent to aluminium cell carbonaceous waste material quality 9.2% Calcium oxide and the sodium hydroxide equivalent to aluminium cell carbonaceous waste material quality 8.6%, add equivalent to aluminium cell carbonaceous waste material The water that 5 times of quality rolles over mixed leaching oxidation dealuminzation dealkalize, filtering washing, obtains the activated carbon slag of dealuminzation alkali, detects aluminium removal efficiency 74.9%th, alkali removal efficiency 87.7%, the recovery of the filtrate of alkali containing aluminium carry aluminium concentrated base, and water lotion is reclaimed for leaching, and dries the work of dealuminzation alkali Change carbon slag to moisture≤15%, homogenizing to be modified, obtain alternative fire coal.
Alternative fire coal obtained by the present embodiment is used for certain Ф 3 × 46m new type nonaqueous cement production line(It is former used in the factory Coal be volatile matter 8.3% anthracite, calorific value 5349kcal/kg, raw coal sulfur content 3.7%), by alternative combustion obtained by the present embodiment Coal and raw coal in mass ratio 1:1 ratio is incorporated in coal mill grinding together.
In the case of other controlling of production process parameter constants, experiment display:Coal mill yield is suitable, and kiln yield is without visible Change, kiln system operating mode is normal, and kiln is interior to be taken a turn for the better without strongly reducing atmosphere, clinker without strong reduction feature, clinker knot grain, and number is controlled in online Coal consumption declines 7.5% according to statistics, and kiln tail discharges Oil repellent detection in flue gas and has no change, is not detected by cyanide.
Detection gained clinker setting time is normal, and 3 days compression strength improves 3.0MPa, and compression strength improves within 28 days 2.1MPa.Through thinking:It is due to that bringing into for fluoride cooperates with caused fluorine sulphur ore deposit with sulphur in raw coal in alternative fire coal Agent, burn-ability is improved, cause clinker knot graininess to take a turn for the better and decline with coal consumption, and because bringing into for fluorine generates appropriate fluoaluminic acid Calcium mineral cause the early stage of clinker and later strength synchronously to improve.
This experiment shows that the waste cathode carbon block material of activated modification has the combustibility suitable with anthracite, can made For alternative fire coal.
Embodiment 5
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the block carbonaceous waste material stored up in certain aluminium manufacturer storehouse, detection Inanimate matter content 28.49%, carbon content 71.51%, the kcal/kg of calorific value 5615;Detoxicant is used in the embodiment of the present invention ZC-XJ1 type detoxification agent solutions(Ferrate detoxicant and hypochlorite detoxicant are with mass ratio 1:1 saturated solution prepared), Catalytic oxidant used in the present embodiment is ZC-7 type liquid catalytic oxidants(Perchlorate catalytic oxidant and nitrate are urged Change oxidant with mass ratio 2:The saturated solution that 1 mixture is prepared), it is purchased from Hunan Province little Yin Wuji environmental energy science and technology and opens Send out Co., Ltd;The present embodiment is from commercially available liquid carbon dioxide as leaching solvent.
(1)It is granulated detoxification:Using double roller squash type crushing system by block aluminium cell carbonaceous waste material be crushed to particle diameter≤ 8mm, broken while, atomized spray equivalent to aluminium cell carbonaceous waste material quality 8% ZC-XJ1 type detoxification agent solutions, and Catalysis oxidation decomposition is implemented to body containing dicyanogen with the dust-removing waste gas of catalytic oxidizer negative pressure extracting crushing system, granulation is obtained and removes poisonous substance Material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in the leaching fluid bowl with milling device, and leaching is dissolved in 10 DEG C of liquid Processed in state carbon dioxide, separate, obtain carbon dry mash, the carbon dry mash of gained is placed in blender, added under agitation Enter the ZC-7 type liquid catalytic oxidants equivalent to carbon dry powder quality 3.1%, homogenizing is modified, and obtains alternative fire coal.
Alternative fire coal obtained by the present embodiment is used for certain Ф 3.5 × 54m new type nonaqueous cement production line(Used in the factory Raw coal be volatile matter 16.7% semibituminous coal, calorific value 5587kcal/kg, raw coal sulfur content 3.7%), will be substituted obtained by the present embodiment Property coal-fired and raw coal in mass ratio 1:1 ratio is incorporated in coal mill grinding together.
In the case of other controlling of production process parameter constants, experiment display:Coal mill yield is suitable, and kiln yield is without visible Change, kiln system operating mode is normal, and kiln is interior to be taken a turn for the better without strongly reducing atmosphere, clinker without strong reduction feature, clinker knot grain, and number is controlled in online Coal consumption is suitable according to statistics, and Oil repellent, which detects, in kiln tail discharge flue gas has no change, is not detected by cyanide.Detection gained clinker coagulates Tie the time it is normal, 3 days and 28 days compression strength it is suitable.
This experiment shows that the waste cathode carbon block material of activated modification has the combustibility suitable with semibituminous coal, can made For alternative fire coal.
Embodiment 6
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the block carbonaceous waste material mixing stored up in certain aluminium manufacturer storehouse Thing(Carbon granules containing anode), detection inanimate matter content 41.14%, carbon content 58.86%, calorific value 4622kcal/kg;The embodiment of the present invention Used detoxicant is ZC-XJ3 type detoxification agent solutions(Bichromate detoxicant and hypochlorite detoxicant are with mass ratio 1:1 The saturated solution of preparation), it is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd.;Urged used in the present embodiment Change oxidant is commercially available ammonium dichromate, metavanadic acid ammonia, lithium perchlorate, cerous nitrate, cobalt nitrate, nickel nitrate in mass ratio 2:1:1: 2:2:3 ratio is dissolved in saturated solution made of water.
(1)It is granulated detoxification:Block aluminium cell carbonaceous waste material is crushed to by particle diameter≤25mm using paddle type mill crushing system, Broken while, atomized spray equivalent to aluminium cell carbonaceous waste material quality 3.2% ZC-XJ3 type detoxification agent solutions, and with The dust-removing waste gas of catalytic oxidizer negative pressure extracting crushing system implements catalysis oxidation decomposition to body containing dicyanogen, obtains granulation and removes poisonous substance Material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in spreading formula blender, is added under agitation equivalent to aluminium The catalysis oxidation agent solution of electrolytic cell carbonaceous waste material quality 3.8%, homogenizing are modified, and obtain alternative fire coal.
Using alternative coal-fired certain factory's drying system that is used for obtained by the present embodiment by the use of being used as alternative fire coal on fluidized bed furnace(The factory Raw coal used in fluidized bed furnace be volatile matter 12.4% semibituminous coal, calorific value 4983kcal/kg, seethe with excitement boiler ash sediment in carbon content 6.9%), The alternative coal-fired raw coal of substitution completely obtained by the present embodiment is tested, experiment display, alternative fire coal fires in fluidized bed furnace Burn functional, furnace temperature is normal, and carbon content is down to 2.9% in the boiler ash sediment that seethes with excitement, and Oil repellent detection is not in drying system discharge flue gas See change, be not detected by cyanide.
This experiment shows, the combustibility phase of the aluminium cell carbonaceous waste material of activated modification with semibituminous coal in fluidized bed furnace When alternative fire coal can be used as.
Embodiment 7
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the waste cathode carbon block stored up in certain aluminium manufacturer storehouse, detects nothing Machine matter content 30.47%, carbon content 69.53%, calorific value 5460kcal/kg;Detoxicant used in the embodiment of the present invention is ZC- XJ5 type detoxification agent solutions(Perchlorate detoxicant and hypochlorite detoxicant are with mass ratio 1:1 saturated solution prepared), this reality It is ZC-9 type catalytic oxidants to apply catalytic oxidant used in example(Metavanadate catalytic oxidant and nitrate catalytic oxidant With mass ratio 1:1 mixture), it is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd..
(1)It is granulated detoxification:Aluminium cell carbonaceous waste material is crushed to by particle diameter≤10mm using impact type crushing system, broken While broken, atomized spray equivalent to aluminium cell carbonaceous waste material quality 5% ZC-XJ5 type detoxification agent solutions, and to be catalyzed oxygen The dust-removing waste gas for changing device negative pressure extracting crushing system implements catalysis oxidation decomposition to body containing dicyanogen, must be granulated detoxification material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in blender, is added under agitation equivalent to aluminium cell The ZC-9 type catalytic oxidants of carbonaceous waste material quality 2.9%, homogenizing are modified, and obtain alternative fire coal.
By the alternative coal-fired alternative fire coal for being used as certain factory revolution lime burning obtained by the present embodiment(The burnt lime institute of factory With the semibituminous coal that raw coal is volatile matter 17.4%, calorific value 5523kcal/kg), alternative fire coal obtained by the present embodiment is pressed with raw coal Mass ratio 1:1 ratio supplying is milled into coal dust.
In the case of other controlling of production process parameter constants, experiment display:Coal mill yield is suitable, and kiln yield is without visible Change, limekiln system condition is normal, and without strongly reducing atmosphere in kiln, online middle control data statistics coal consumption is suitable, kiln tail discharge cigarette Oil repellent detection has no change in gas, and detection lime quality is not detected by cyanide without visible change.
This experiment shows, the combustibility phase of the waste cathode carbon block material of activated modification with semibituminous coal in rotary kiln When alternative fire coal can be used as.
Embodiment 8
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the block carbonaceous waste material stored up in certain aluminium manufacturer storehouse, detection Inanimate matter content 37.2%, carbon content 62.8%, the kcal/kg of calorific value 4931;Detoxicant used in the embodiment of the present invention is ZC- XJ13 type detoxification agent solutions(The saturated solution that hypochlorite detoxicant is prepared), catalytic oxidant used in the present embodiment is ZC-11 type catalytic oxidants(Ferrate catalytic oxidant and nitrate catalytic oxidant are with mass ratio 1:1 mixture), It is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd.;Auxiliary material used in the present embodiment is commercially available oxidation Calcium.
(1)It is granulated detoxification:Block aluminium cell carbonaceous waste material is crushed to by particle diameter≤5mm using impact type crushing system, Broken while, atomized spray equivalent to aluminium cell carbonaceous waste material quality 7% ZC-XJ13 type detoxification agent solutions, and to urge The dust-removing waste gas for changing oxidator negative pressure extracting crushing system implements catalysis oxidation decomposition to body containing dicyanogen, must be granulated detoxification material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in blender, is added under agitation equivalent to aluminium cell The ZC-11 types catalytic oxidant of carbonaceous waste material quality 4.1% and the calcium oxide equivalent to aluminium cell carbonaceous waste material quality 5%, Change and be modified, obtain alternative fire coal.
Alternative fire coal obtained by the present embodiment is made into alternative fire coal for certain Building Materials Factory's tunnel cave shale brick firing system (Raw coal used in factory's tunnel cave shale brick firing system be volatile matter 7.6% anthracite, calorific value 5031kcal/kg), by this reality Apply alternative coal-fired complete substitution raw coal obtained by example to be tested, experiment display, alternative fire coal obtained by the embodiment of the present invention exists Combustibility is good in tunnel cave shale brick firing system, and tunnel cave operating mode is normal.After testing:Using alternative coal-fired shale brick Sintering quality is more preferable, and compression strength averagely improves 2.6MPa, and Oil repellent detects in tunnel cave shale brick firing system discharge flue gas Change is had no, is not detected by cyanide.
This experiment shows that the aluminium cell carbonaceous waste material and anthracite of activated modification are in tunnel cave shale brick firing system In combustibility it is suitable, alternative fire coal can be used as.
Embodiment 9
Aluminium cell carbonaceous waste material used in the embodiment of the present invention is derived from the block carbonaceous waste material stored up in certain aluminium manufacturer storehouse, detection Aggregate sample inanimate matter content 28.49%, carbon content 71.51%, calorific value 5615kcal/kg;Catalysis oxidation used in the present embodiment Agent is ZC-7 type liquid catalytic oxidants(Perchlorate catalytic oxidant and nitrate catalytic oxidant are with mass ratio 2:1 prepares Saturated solution), it is purchased from Hunan Province little Yin Wuji environmental energy Science and Technology Development Co., Ltd.;Auxiliary material used in the present embodiment For commercially available coal tar.
After aluminium cell carbonaceous waste material is crushed into granularity≤15mm, be placed in blender, add under agitation equivalent to ZC-7 type liquid catalytic oxidants of aluminium cell carbonaceous waste material quality 6.5% and equivalent to aluminium cell carbonaceous waste material quality 30% Coal tar, homogenizing be modified, obtain alternative fire coal.
By the alternative coal-fired alternative fire coal for being used as certain factory revolution lime burning obtained by the present embodiment(The burnt lime institute of factory With the semibituminous coal that raw coal is volatile matter 17.4%, calorific value 5523kcal/kg), alternative fire coal obtained by the present embodiment is pressed with raw coal Mass ratio 1:1 ratio supplying is milled into coal dust.
In the case of other controlling of production process parameter constants, experiment display:Coal mill yield is suitable, and kiln yield is without visible Change, limekiln system condition is normal, and without strongly reducing atmosphere in kiln, online middle control data statistics coal consumption is suitable, kiln tail discharge cigarette Oil repellent detection has no change in gas, and detection lime quality is not detected by cyanide without visible change.
This experiment shows, the combustibility phase of the waste cathode carbon block material of activated modification with semibituminous coal in rotary kiln When alternative fire coal can be used as.

Claims (9)

1. a kind of aluminium cell carbonaceous materials recycling is alternative coal-fired method, it is characterised in that is comprised the following steps:
(1)It is granulated detoxification:Aluminium cell carbonaceous waste material is crushed, broken while, atomized spray is equivalent to aluminium cell charcoal The detoxification agent solution of matter waste material quality 1~10%, and with the dust-removing waste gas of catalytic oxidizer negative pressure extracting crushing system, must be granulated Detoxification material;
(2)Activation:By step(1)Gained granulation detoxification material is placed in blender, is added under agitation equivalent to aluminium cell The catalytic oxidant of carbonaceous waste material quality 0.6~8.0%, homogenizing are modified, and obtain alternative fire coal;
Or by step(1)Gained granulation detoxification material is placed in in the leaching groove or tank that stir or roll over mixing device, adds phase respectively When in the catalytic oxidant and 2~20% lime of aluminium cell carbonaceous waste material quality 1~8%, and add equivalent to aluminium cell Mixed, oxidation dealkalize, filtering or filtering washing are rolled in the water stirring of 1~10 times of carbonaceous waste material quality, are obtained dealkalize activated carbon slag, are dried To moisture≤15%, homogenizing is modified, and obtains alternative fire coal;
Or by step(1)Gained granulation detoxification material is placed in in the leaching groove or tank that stir or roll over mixing device, adds phase respectively When in the catalytic oxidant of aluminium cell carbonaceous waste material quality 1~8%, 2~20% lime, 2~20% sodium hydroxide, and add Enter water stirring of 1~10 times equivalent to aluminium cell carbonaceous waste material quality or roll over mixed, oxidation dealuminzation dealkalize, filtering or filter water Wash, obtain the activated carbon slag of dealuminzation alkali, dry to moisture≤15%, homogenizing and be modified, obtain alternative fire coal;
Or by step(1)Gained granulation detoxification material leaching, which is dissolved in 0~80 DEG C of overcritical or liquid carbon dioxide, processes, then In separating obtained carbon dry mash, the catalytic oxidant added equivalent to carbon dry mash quality 0.5~6% mix Matter is modified, and obtains alternative fire coal.
2. aluminium cell carbonaceous materials recycling is alternative coal-fired method according to claim 1, it is characterised in that:Step (1)In, granularity≤25mm after waste material is broken;The crumbling method is hammering, extruding or impact type crush.
3. aluminium cell carbonaceous materials recycling according to claim 1 or claim 2 is alternative coal-fired method, it is characterised in that: Step(1)In, the main component of the aluminium cell carbonaceous waste material is waste cathode carbon block and/or scrap anode carbon granule, wherein, it is inorganic Matter content 20~50%, carbon content 50~80%, 3800~6000kcal/kg of calorific value.
4. being alternative coal-fired method according to one of claims 1 to 3 aluminium cell carbonaceous materials recycling, its feature exists In:Step(1)In, the detoxicant is ferrate detoxicant, bichromate detoxicant, thiosulfate detoxicant, high chlorine One or more in hydrochlorate detoxicant, hydroxide detoxicant, hypochlorite detoxicant or chlorine dioxide;The ferrate Detoxicant is the one or more in potassium ferrate, ferrate-lithium or Na2Fe04, and the bichromate detoxicant is dichromic acid One or more in potassium, sodium dichromate, dichromic acid cobalt or dichromic acid acid anhydride, the thiosulfate detoxicant are sodium thiosulfate And/or potassium thiosulfate, the perchlorate are lithium perchlorate and/or cobaltous perchlorate, the hydroxide is cobalt hydroxide, hydrogen One or more in sodium oxide molybdena or potassium hydroxide, the hypochlorite are sodium hypochlorite and/or calcium hypochlorite.
5. being alternative coal-fired method according to one of Claims 1 to 4 aluminium cell carbonaceous materials recycling, its feature exists In:Step(2)In, the catalytic oxidant is bichromate catalytic oxidant, metavanadate catalytic oxidant, ferrate are urged Change the one or more in oxidant, perchlorate catalytic oxidant or nitrate catalytic oxidant;The bichromate catalysis Oxidant is the one or more in ammonium dichromate, strontium dichromate or lithium bichromate, and the metavanadate catalytic oxidant is inclined Ammonium vanadate, the ferrate catalytic oxidant are ferric acid cobalt and/or ferrate-lithium, and the perchlorate is lithium perchlorate And/or cobaltous perchlorate, the nitrate catalytic oxidant are cerous nitrate, lanthanum nitrate, ferric nitrate, copper nitrate, lithium nitrate, nitric acid One or more in tin, nitric acid antimony, cobalt nitrate, zirconium nitrate, nickel nitrate, platinum nitrate, palladium nitrate or rhodium nitrate.
6. being alternative coal-fired method according to one of Claims 1 to 5 aluminium cell carbonaceous materials recycling, its feature exists In:Step(1)In, the detoxification agent solution dissolves for sodium hypochlorite first to be added to water of 1.5~5.5 times equivalent to its quality, Potassium ferrate and potassium hydroxide are pressed 1 again:0.8~1.2 mass ratio is dissolved in the saturated solution formed in liquor natrii hypochloritis;Step Suddenly(2)In, the catalytic oxidant is ammonium dichromate, metavanadic acid ammonia, lithium perchlorate, cerous nitrate, cobalt nitrate, nickel nitrate press quality Than 2:0.8~1.2:0.8~1.2:1.5~2.5:1.5~2.5:2.5~3.5 ratio is dissolved in saturated solution made of water.
7. being alternative coal-fired method according to one of claim 1~6 aluminium cell carbonaceous materials recycling, its feature exists In:Step(2)In, after catalytic oxidant is added or after drying, add equivalent to the % of aluminium cell carbonaceous waste material quality 1~20 Calcium oxide and/or magnesia, and/or hydrocarbon-containiproducts equivalent to the % of aluminium cell carbonaceous waste material quality 1~50 have Machine combustible, then it is homogenized modification;The combustable organic thing of the hydrocarbon-containiproducts is coal tar, useless molding powder, waste Crumb rubber or paddy One or more in shell.
8. a kind of aluminium cell carbonaceous materials recycling is alternative coal-fired method, it is characterised in that:Aluminium cell carbonaceous is given up After material is crushed to granularity≤25mm, the catalytic oxidant equivalent to its quality 0.8~8.0% and 1~50% carbon containing hydrogenation are added The combustable organic thing of compound, homogenizing are modified, and obtain alternative fire coal.
9. aluminium cell carbonaceous materials recycling is alternative coal-fired method according to claim 8, it is characterised in that:It is described Catalytic oxidant is bichromate catalytic oxidant, metavanadate catalytic oxidant, ferrate catalytic oxidant, perchlorate One or more in catalytic oxidant or nitrate catalytic oxidant;The bichromate catalytic oxidant be ammonium dichromate, One or more in strontium dichromate or lithium bichromate, the metavanadate catalytic oxidant are ammonium metavanadate, the ferric acid Salt catalytic oxidant is ferric acid cobalt and/or ferrate-lithium, and the perchlorate is lithium perchlorate and/or cobaltous perchlorate, described Nitrate catalytic oxidant is cerous nitrate, lanthanum nitrate, ferric nitrate, copper nitrate, lithium nitrate, nitric acid tin, nitric acid antimony, cobalt nitrate, nitre One or more in sour zirconium, nickel nitrate, platinum nitrate, palladium nitrate or rhodium nitrate;The combustable organic thing of the hydrocarbon-containiproducts For the one or more in coal tar, useless molding powder, waste Crumb rubber or husk.
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