CN101528371A - Method of treating asbestos-containing waste material - Google Patents
Method of treating asbestos-containing waste material Download PDFInfo
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- CN101528371A CN101528371A CNA2007800394872A CN200780039487A CN101528371A CN 101528371 A CN101528371 A CN 101528371A CN A2007800394872 A CNA2007800394872 A CN A2007800394872A CN 200780039487 A CN200780039487 A CN 200780039487A CN 101528371 A CN101528371 A CN 101528371A
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Abstract
The invention provides a method of asbestos treatment in which an asbestos-containing waste material of arbitrary configuration can be detoxified completely and safely. The method of asbestos treatment comprises impregnating an asbestos-containing waste material with an acid so as to cause at least the asbestos at the surface of the waste material to be nonasbestous and further treating the treatment product in a cement production plant. In particular, the treatment in a cement production plant is a fusion treatment by means of a cement kiln. Therefore, not only can the asbestos-containing waste material be detoxified completely and safely but also a cement reusing the waste material can be produced.
Description
Technical field
The present invention relates to contain the processing method of the waste wood of asbestos, particularly relating to can be fully and handle the processing method of the asbestos-containing waste material of the waste wood that contains asbestos safely.
Background technology
In the past, asbestos are not because through still having situation such as intensity reduction for a long time, fire resistance is also excellent, so be used in various fields widely, the packing material etc. that is used in corrugated blank (ス レ one ト plate), water pipe, fireproof coating material, brake rim, liner, warming plate, rope, filler, acetylene gas bomb relates to many members in various fields.
Yet, verify asbestos in recent years and be form asbestosis, lung cancer, pernicious in the essential factor of many Health cost such as skin is swollen, so the use that is under an embargo.
The member that particularly contains asbestos waits as corrugated blank member or fire resistance lining material mostly and uses, and these corrugated blank members etc. are used for ceiling, wall material etc. mostly.
Yet, these are a large amount of use contain the asbestos member because above-mentioned environment aspect, if former state continues to use, can be dangerous with regard to environment, must discard as quickly as possible/harmless treatment, this is present situation.
Mass-produced before this corrugated blank member etc. contains the asbestos member and is used as general discarded object and treats, and is used as industrial waste now and gives waste disposal, but have the problem that asbestos disperse or discharges, and hope has urgent Security Countermeasures.
Particularly fireproof coating material or the uses such as ceiling floor that the crumble disintegration etc. that contains the fabrication of asbestos building materials enters the peak, and the handling problem of the exposure of asbestos and these asbestos is very serious.
This asbestos are mineral fibres of natural generation, and the choysotile (3MgO2SiO of snake series of rocks is for example arranged
22H
2O), the amosite of hornblend system (Mg, Fe)
7Si
8O
22(OH)
2), crocidolite (Na
2Fe
3 2+Fe
2 3+Si
8O
22(OH)
2), anthophyllite (Mg
7Si
8O
22(OH)
2), the tremolite (Ca
2Mg
5Si
8O
22(OH)
2), actinolite (Ca
2(Mg, Fe)
5Si
8O
22(OH)
2).
When the choysotile of this snake series of rocks heats,, under about 900 ℃, become harmless forsterite (2MgOSiO in about 700 ℃ of dehydration, metamorphosis down
2), this is known, but it is difficult in fact easily carrying out innoxious, so do not seek its effective utilization fully yet.
The harmfulness of this asbestos is its cellulosic.
Therefore, as making the innoxious method of asbestos by cellulosic upgrading, fusion, in patent No. 3680958 (patent documentation 1), put down in writing a kind of cement manufacturing method, it is to use the cement manufacturing method of rotary kiln, it is characterized by, near the set burner of the discharge oral-lateral of above-mentioned rotary kiln, the asbestos waste wood is fed in the above-mentioned rotary kiln, handle asbestos waste wood and the cement raw material of being supplied by above-mentioned burner.
Also have, in TOHKEMY 2005-279589 communique (patent documentation 2), put down in writing a kind of processing method of corrugated blank waste wood, it is characterized by, the corrugated blank waste wood that contains asbestos not impregnated in all to pieces by borax, the mixture of boric acid and sodium carbonate, or in the aqueous solution of the formed fusion agent of the mixture of borax and sodium carbonate, it is under reduced pressure placed, the fusion agent is contained in the space that is dipped in corrugated blank inside and after carrying out preliminary treatment from the surface of corrugated blank waste wood, impregnated in through this pretreated corrugated blank waste wood in the calciner that is full of the fusion agent, be heated to 780～1000 ℃ scope, make in the corrugated blank waste wood the asbestos fusion and with its vitrifying.
Have again, open the processing method of having put down in writing a kind of waste wood of inanimate matter based material in the 2006-52177 communique (patent documentation 3) the spy, it is that the waste wood of inanimate matter based material is dropped into the cement manufacturing with in the kiln with the cement production of raw material for use, carry out heat treated, thereby it is transformed into cement, it is characterized by, size to waste wood is more than the 1mm by minimum of a value, maximum is internal diameter 1/10 below of cement manufacturing with kiln, and the beeline on any position of waste wood inside to surface is that the mode in the following scope of 30mm is carried out size adjusting, waste wood shared ratio in the total amount of waste wood and cement raw material is 1～20% scope by the quality ratio under the drying regime, waste wood is dropped into the cement manufacturing with in the kiln with the cement production of raw material for use from the kiln tail, obtain sintered body 1000～1500 ℃ of following heat treated 20～60 minutes, the sintered body that is obtained is given powdered.
The existing method of putting down in writing in above-mentioned each patent documentation is to carry out innoxious method containing in asbestos discarded object input melting furnace or the cement kiln.
Yet,, can't prevent dispersing or discharging of asbestos when containing the asbestos discarded object and be supplied to melting furnace or cement kiln.Also have, in above-mentioned existing method, as preliminary treatment, for asbestos-containing waste material being pulverized, is decomposed or forms fine fragment etc., must use heavy-duty machinery to wait and destroy asbestos-containing waste material etc., mainly be to use mechanical device, asbestos will disperse, discharges as a result, fully solution in the operation that is supplied to melting furnace or cement kiln to the problem that influences aspect the health.
Patent documentation 1: No. 3680958, Japan Patent
Patent documentation 2: TOHKEMY 2005-279589 communique
Patent documentation 3: TOHKEMY 2006-52177 communique
Summary of the invention
The problem that invention will solve
The object of the present invention is to provide a kind of and size or robustness irrelevant can be fully and carry out the processing method of the asbestos-containing waste material of harmless treatment safely to the asbestos-containing waste material of any form.
When particularly asbestos-containing waste material is corrugated blank, needed high temperature/processing for a long time in the past, innoxious efficient is not good, and in the present invention, provide a kind of can be at short notice to asbestos-containing waste material fully and carry out the processing method of the asbestos-containing waste material of harmless treatment safely.
Also has the processing method of the asbestos-containing waste material that the raw material when a kind of can the manufacturing asbestos-containing waste material as clinker or cement is provided utilizes again.
Solve the scheme of problem
Discoveries such as the inventor are by carrying out acid treatment to asbestos-containing waste material, then in cement equipment, handle, carry out 2 phase process, just can be complete and innoxious safely the asbestos-containing waste material of any form of continuous shape, tabular, Powdered, fragmentation shape, finish the present invention then.
The processing method of the asbestos-containing waste material of technical scheme 1 record is characterized by, and contains pickling in containing the waste wood of asbestos, the asbestos in the above-mentioned waste wood is given non-asbestosization obtain handled thing, and then handle this handled thing in cement making equipment.
Also have, the processing method of the asbestos-containing waste material of technical scheme 2 records is characterized by, and in the processing method of the asbestos-containing waste material that technical scheme 1 is put down in writing, the processing in the above-mentioned cement making equipment is a melt process of utilizing cement kiln to carry out.
The processing method of the asbestos-containing waste material of technical scheme 3 records, it is characterized by, in the processing method of the asbestos-containing waste material that technical scheme 2 is put down in writing, this asbestos-containing waste material is a corrugated blank, above-mentioned cement kiln is the cement rotary kiln, and from the kiln tail of this cement rotary kiln supply above-mentioned non-asbestos change handled thing.
The processing method of the asbestos-containing waste material of technical scheme 4 record is characterized by, in the processing method of the asbestos-containing waste materials of technical scheme 2 or 3 records, above-mentioned non-asbestos change handled thing not bad land be supplied to cement kiln.
Like this, by 2 phase process of acid treatment and melt process, can be the asbestos member safety of any form and preliminary treatment ground such as fully and not need to pulverize fully innoxious.
Particularly before offering melt process, the asbestos member is given non-asbestosization by acid treatment, asbestos just can not disperse/discharge, and can handle safely, and health affected is become minimum.
The processing method of the asbestos-containing waste material of technical scheme 5 records, it is characterized by, in technical scheme 1～3, in the processing method of the asbestos-containing waste material of any record, when in asbestos-containing waste material, containing pickling, this waste wood that contains asbestos is carried out fragmentation/pulverization process under air-tight state.
The processing method of the asbestos-containing waste material of technical scheme 6 records is characterized by, and in the processing method of the asbestos-containing waste material that technical scheme 5 is put down in writing, above-mentioned air-tight state is that a waste wood that contains asbestos is immersed in the state in the acid.
The processing method of the asbestos-containing waste material of technical scheme 7 records, it is characterized by, in the processing method of the asbestos-containing waste material that technical scheme 5 is put down in writing, above-mentioned air-tight state is for giving airtight fragmentation/pulverizings that fragmentation/pulverizer carried out and the handover from this fragmentation/pulverizer to the acid treatment container is to give airtight handover state by casing by casing, and perhaps use can give the state that airtight acid treatment container is realized fragmentation/pulverizing by casing.
Like this, possess under the air-tight state safe asbestos-containing waste material is carried out fragmentation/pulverization process, carries out acid treatment, carries out the operation of melt process environment, even the asbestos-containing waste materials that size is big etc. are the asbestos-containing waste material of form arbitrarily, also can be effectively and safe, fully that it is innoxious.
Particularly to asbestos-containing waste material after carrying out fragmentation/pulverization process, acid treatment under the air-tight state with its non-asbestosization, the handled thing of gained is offered cement kiln carry out melt process, thereby asbestos can not disperse/discharge, and can handle safely, and health affected is become minimum.
The processing method of the asbestos-containing waste material of technical scheme 8 records, it is characterized by, in the processing method of the asbestos-containing waste material that technical scheme 2 is put down in writing, above-mentioned asbestos waste wood is the asbestos injection materials, the processing of this cement equipment be the raw material that clinker burns till the workshop accept the non-asbestos change of supply in arbitrary operation of operation to the cement kiln supply operation handled thing, carry out melt process by cement kiln.
Remove comparatively fine and close waste wood like this, the selected especially asbestos winding-up waste wood that contains, it is inner and it is innoxious fully that acid is soaked into fully to waste wood, can not produce dispersing, discharging of the problem that becomes asbestos, the raw material that is supplied to clinker to burn till the workshop is accepted the arbitrary operation of operation to the cement kiln supply operation, all can be asbestos-containing waste material safety and fully and not need pulverize fully innoxious with waiting preliminary treatment.
The processing method of the asbestos-containing waste material of technical scheme 9 records, it is characterized by, in technical scheme 2～8 in the processing method of the asbestos-containing waste material of any record, acid is to contain the fluorine-containing compound and the aqueous acid of inorganic acid, non-asbestos handled thing is with carrying out this solution after the acid treatment and the sediment that generates in the alkali and to asbestos-containing waste material, raw material when cooperating this sediment as the clinker of making the fluorinated calcium aluminate carries out melt process at above-mentioned cement kiln.
The processing method of the asbestos-containing waste material of technical scheme 10 records is characterized by, and in the processing method of the asbestos-containing waste material that technical scheme 9 is put down in writing, this sediment contains calcirm-fluoride, aluminium hydroxide, iron hydroxide, magnesium hydroxide and silicate compound.
So just can handle with the treatment fluid that contains fluorochemical and inorganic acid asbestos-containing waste material, asbestos are carried out harmless treatment, and effectively utilize calcium fluorine ion contained in the disposing waste liquid after this harmless treatment or the metal ion of Al, Fe etc., its raw material as the clinker of fluorinated calcium aluminate is used.
The processing method of the asbestos-containing waste material of technical scheme 11 records is characterized by, and in the processing method of the asbestos-containing waste material of any record, the handled thing of above-mentioned non-asbestosization is supplied to cement kiln with flux in technical scheme 2～10.
The processing method of the asbestos-containing waste material of technical scheme 12 record is characterized by, and above-mentioned cement making equipment is that cement is finished the disintegrating apparatus in the operation, non-asbestos change the gypsum source of handled thing when making as cement cooperate.
The processing method of the asbestos-containing waste material of technical scheme 13 records, it is characterized by, in the processing method of the asbestos-containing waste material that technical scheme 12 is put down in writing, this non-asbestos change handled thing be in the waste wood that contains asbestos and gypsum, to contain pickling, asbestos contained in the described waste wood are given non-asbestosization obtain.
Like this waste wood that contains asbestos and gypsum is carried out acid treatment, can be safely with regard to environment and fully that it is innoxious, and this harmless treatment thing is effectively utilized as the gypsum source, so can contain effective utilization of the waste wood of asbestos and gypsum with the promotion of low-energy-consumption amount.
The processing method of the asbestos-containing waste material of technical scheme 14 records, it is characterized by, in the processing method of the asbestos-containing waste material that technical scheme 12 is put down in writing, above-mentioned non-asbestos change handled thing be in the waste wood that contains asbestos and calcium, to contain pickling, asbestos contained in the described waste wood are given non-asbestosization, and contained calcium and sulfuric acid are reacted generate gypsum and obtain.
So just can carry out sulfuric acid treatment to the waste wood that contains asbestos and calcium, safety and fully that asbestos are innoxious with regard to environment, and calcium contained in this waste wood and sulfuric acid are reacted and generate gypsum, so the gypsum source can make this harmless treatment thing as cement with the low-energy-consumption amount time and effectively utilizing.
Therefore, can promote to contain effective utilization of the waste wood of asbestos and calcium.
The processing method of the asbestos-containing waste material of technical scheme 15 records, it is characterized by, in the processing method of the asbestos-containing waste material that technical scheme 12 is put down in writing, non-asbestos handled thing is the solid constituent that obtains by following operation: by reacting the 1st operation that the waste wood that contains asbestos is dissolved in the 1st acid that generates water soluble salt with calcium or magnesium; The treatment fluid of the 1st operation is contacted with sulfuric acid, separate out the 2nd operation of calcium sulfate; And the 3rd operation of the treatment fluid of the 2nd operation being carried out Separation of Solid and Liquid.
The processing method of the asbestos-containing waste material of technical scheme 16 record is characterized by, and in technical scheme 12～15 in the processing method of the asbestos-containing waste material of any record, above-mentioned waste wood is the winding-up waste wood to be disintegrated and the waste wood that generates.
The processing method of the asbestos-containing waste material of technical scheme 17 records, it is characterized by, in the processing method of the asbestos-containing waste material of any record, acid is the acid of selecting from the group that phosphoric acid, sulfuric acid, nitric acid, hydrochloric acid and fluoric acid are formed more than a kind in technical scheme 1～13,15～16.
Herein, particularly in the processing method of the asbestos-containing waste material of technical scheme 9, above-mentioned acid is meant inorganic acid, also has, in the processing method of the asbestos-containing waste material of technical scheme 15, above-mentioned acid is meant the 1st acid, removes to generate difficult water soluble salt.
The processing method of the asbestos-containing waste material of technical scheme 18 records is processing methods of a kind of asbestos, it is characterized by, in the processing method of the asbestos-containing waste material that technical scheme 17 is put down in writing, acid is to add fluoride and inorganic acid and the aqueous acid that obtains, wherein, described fluoride is from the fluoride salt of alkali metal, alkaline-earth metal or ammonia and fluoridizes at least a kind of fluoride selecting the group that hydracid forms, and above-mentioned inorganic acid is that the pH value by the aqueous acid that is obtained becomes at least a kind of inorganic acid that the mode below 1 is selected from the group that hydrochloric acid, sulfuric acid and nitric acid are formed.
The processing method of the asbestos-containing waste material of technical scheme 19 records is method for innocent treatment of a kind of asbestos-containing waste material, it is characterized by, in the method for innocent treatment of the asbestos-containing waste material of technical scheme 18 record, above-mentioned fluoride is that the mode that the fluoride ion concentration in the aqueous acid when having dissociated by whole ion guns becomes 1.5～10 weight % is added.
The processing method of the asbestos-containing waste material of technical scheme 20 records is method for innocent treatment of a kind of asbestos-containing waste material, it is characterized by, in the method for innocent treatment of asbestos-containing waste materials of technical scheme 18 or 19 records, be 3～100 by weight with respect to the cooperation ratio of the aqueous acid of asbestos-containing waste material.
Adopt this processing method, just can destroy the acicular texture of asbestos, asbestos are carried out non-asbestosization, harmless treatment.
Therefore, carry out asbestos-containing waste material after this processing can be used as can safe handling the harmless treatment thing treat.
The invention effect
The processing method of asbestos-containing waste material of the present invention can be to asbestos-containing waste material safety and fully carry out harmless treatment.
Also have, particularly use cement making equipment to handle, just it can be used in and make clinker or cement, and can promote utilizing effectively again of asbestos-containing waste material.
In addition, no matter proterties such as the size of asbestos-containing waste material or robustness how, all can be handled all waste wood such as corrugated blank, injection materials fully and safely.
Description of drawings
The process chart of the summary of cement is made in [Fig. 1] expression.
[Fig. 2] roughly represents to make the process chart of finishing operation of cement.
Symbol description
1: the raw material reception funnel
2: the raw material bunker
3: the raw material pulverizing machine
4: mixing bunker
5: the raw material repository
6: preheating device (pre-heater)
7: roaster
8: the cement rotary kiln
9: cooler
1 ': the clinker storehouse
2 ': the gypsum field
3 ': the preparation pulverizer
4 ': the cement pulverizer
5 ': seperator
6 ': mixer
7 ', 8 ': cement bin
The specific embodiment
With following best mode example explanation the present invention, but the present invention is not limited by they.
Asbestos processing method of the present invention is to contain pickling in containing the waste wood of asbestos, and the asbestos in the above-mentioned waste wood are given non-asbestosization, the processing method of the asbestos-containing waste material that the handled thing of gained is further handled in cement making equipment.
As the processing in the cement making equipment, can enumerate and utilize the melt process that cement kiln carries out and utilize cement to finish the processing that the disintegrating apparatus in the operation carries out.
Possess the processing in acid treatment and the cement equipment like this, just can be the asbestos member safety of any form and fully innoxious.
When particularly carrying out the related melt process of cement kiln, before the processing that is supplied to cement making equipment to carry out, preferably be supplied to cement kiln, more preferably before the melt process that the cement rotary kiln is carried out, the asbestos member by acid treatment but not asbestosization, thereby make asbestos can not disperse/discharge, can handle safely, health affected is become minimum.
Asbestos-containing waste material as the processing method that can use asbestos-containing waste material of the present invention, have no particular limits for kind or form, for example can contain the middle waste wood that uses such as the waste wood that member/the construction product disintegrate and produced, particularly building materials of asbestos to the asbestos injection material of cement system or gypsum system or corrugated blank etc. all as object.
Can especially effectively be used in the problematic especially waste wood of asbestos winding-up construction product that contain that disperse/the discharge a large amount of discharges of expectation meeting, asbestos from now on through disintegrating and being produced.
For example, contain asbestos plasterboard or contain the waste wood that contains asbestos and gypsum that uses in the building materials such as asbestos winding-ups gypsum and also can become object.
Have, for example containing the asbestos cement tie-plate or containing asbestos cement is that the waste wood that contains asbestos and calcium of injection material also can become object again.
,, not only comprise calcium itself herein, also comprise mineral contained in the cement such as the calcium oxide that works as the calcium source, calcium hydroxide, janeckeite, dicalcium silicate stone, calcium aluminate, ferrite or their compounds such as hydrate as calcium contained in the waste wood.
Also have, for example also comprise organic additives such as paper fiber or paste containing after recovery in the asbestos corrugated blank, can after acid treatment, leach residue, thereby easily with its separation, also comprise organic additives such as paper fiber or paste in the plasterboard after the recovery, can be easily with its separation in following acid-treated process.
In the processing method of asbestos-containing waste material of the present invention, at first, asbestos-containing waste material is carried out acid treatment.Specifically be asbestos-containing waste material to be contained to be dipped in the acid get final product.
For example, can be set forth in and on-the-spot acid be jetted on the construction product, asbestos are given the method for non-asbestosization, or at the scene after containing the asbestos product of constructing and disintegrating, this waste wood be impregnated in method in the acid etc. before containing asbestos construction product and disintegrating.
As spendable acid, can use phosphoric acid, sulfuric acid, nitric acid, hydrochloric acid, fluoric acid or their mixed liquor effectively, its concentration has no particular limits so long as the condition that can make asbestos produce non-asbestos reaction gets final product, and the material that concentration is high can carry out harmless treatment at short notice in a large number.
And the situation at the visual scene of concentration of acid etc. is suitably set.
By this acid treatment the non-asbestosization of the asbestos in the above-mentioned asbestos-containing waste material.Even when asbestos-containing waste material was waiting of densification, inside also can be moistening by acid, asbestos can not disperse.
Herein, non-asbestosization are that expression asbestos and acid are reacted, and the acicular crystal of choysotile, crocidolite, amosite etc. changes into the state of material in addition.Asbestos become this state, and human body is just become harmless.
Particularly this acid treatment preferably uses the aqueous acid that contains fluorine-containing compound and inorganic acid the non-asbestosization of asbestos-containing waste material.
As inorganic acid, can use water-soluble inorganic acid arbitrarily such as above-mentioned phosphoric acid, hydrochloric acid, sulfuric acid, nitric acid, particularly various inorganic acids and their mixed acid such as hydrochloric acid, sulfuric acid, nitric acid, the preferred at least a inorganic acid of selecting from the group that hydrochloric acid, sulfuric acid and nitric acid are formed that uses, this is from being suitable use of situation that adhesive is dissolved to the cement of high pH value contained the asbestos-containing waste material.
Preferably, acid is to add from the fluoride salt of alkali metal, alkaline-earth metal or ammonia and fluoridize at least a fluoride selected the group that hydracid forms and be the aqueous acid of at least a inorganic acid gained selected from the group that hydrochloric acid, sulfuric acid and nitric acid are formed of the mode below 1 by the pH value of the aqueous acid that is obtained.
, as inorganic acid, can use any water-soluble inorganic acid except that phosphoric acid herein, the situation of the dissolving of the sticking platform agent of cement system of the high pH value of various inorganic acids such as particularly hydrochloric from waste wood, sulfuric acid, nitric acid and their mixed acid is fit to use.
The concentration of this inorganic acid has no particular limits, and is that mode below 1 cooperates by the pH value of the aqueous acid that is obtained preferably.
This is that the cement that can dissolve high pH value contained in the asbestos-containing waste material in shorter time is adhesive because the pH value of the aqueous acid that obtained is 1 when following.
Also have, use this aqueous acid implement the asbestos in the asbestos-containing waste material non-asbestos processing during, promptly, make this aqueous acid and asbestos-containing waste material by impregnating contact during, the pH value of this treatment fluid remains in below 1 always, this makes the cement of high pH value contained in the waste wood for shortening is preferable for time of adhesive dissolving, and this can look in the non-asbestos processing of asbestos-containing waste material, and it is required and add inorganic acid contained in this aqueous acid and keep.
Also have, as fluorochemical contained in the above-mentioned aqueous acid, so long as have the compound of solubility to get final product to glassware for drinking water, have no particular limits, for example can enumerate from fluoride salt, tetrafluoroborate, the hexafluorosilicate of alkali metal, alkaline-earth metal or ammonia and fluoridize at least a fluorochemical of selecting the group that hydracid forms that glassware for drinking water is had solubility.Preferably from the fluoride salt of alkali metal, alkaline-earth metal or ammonia and fluoridize at least a fluorochemical of selecting the group that hydracid forms that glassware for drinking water is had solubility.
As this fluoride salt, for example can enumerate the fluoride, difluoride, their mixture of alkali metal, alkaline-earth metal or ammonia.
The fluoride that is particularly suitable for using as ammonium fluoride, fluoridize hydracid.
In aqueous acid, contain this fluorochemical, just can destroy the SiO of asbestos
2Framework.
The addition of this fluorochemical is that the fluoride ion concentration in the aqueous acid becomes 1.5～10 weight % when all being dissociated into ion gun by the hypothesis fluorochemical, and the mode that particularly preferably is 2.5～7 weight % is added.
Add the fluorochemical of this scope, just can have the SiO that can more effectively make asbestos
2The action function of framework dissolving.
Use above-mentioned aqueous acid that asbestos-containing waste material is contacted with this aqueous acid, particularly, asbestos-containing waste material be impregnated in this aqueous acid, left standstill or stir, asbestos in the asbestos-containing waste material are contacted effectively with this aqueous acid, can seek the non-asbestosization of asbestos.
At this moment, as mentioned above, the pH value of aqueous acid is remained in below 1.As its maintenance method, can enumerate that inorganic acid contained in this aqueous acid is suitably made an addition in the above-mentioned harmless treatment, thereby make the pH value remain in method below 1 etc.
Particularly contained asbestos amount or cement is that amount of binder is set arbitrarily in the visual asbestos-containing waste material of cooperation ratio for the asbestos-containing waste material aqueous acid in the non-asbestos processing of asbestos, preferably be 3～100 by weight, more preferably 5～20.
Weight ratio is in above-mentioned scope the time, can more suppress inorganic acid and cement is the rising of the pH value of aqueous solution that reaction caused of adhesive, can in the shorter time, handle, improve treatment effeciency, also can get the cost control of liquid waste processing after the non-asbestos processing lower.
Like this, preferably, the aqueous acid that use the pH value to be below 1, to have specific fluorinion concentration scope, thereby can prevent dispersing or discharging of asbestos dust etc. effectively to the asbestos-containing waste material of any form, safer and below the 0.1 weight % by above-mentioned MHLW regulation, easily carry out non-asbestos processing at short notice.
In addition, in only asbestos-containing waste material being carried out the related non-asbestos processing method of acid-treated operation, for example for comparatively fine and close, larger-size asbestos-containing waste material, acid sometimes is difficult for soaking into, and is difficult for fully innoxious to waste wood inside in the practicality.
To this, if for example by in waste wood, adding the operation or the pulverizing/broken process in crack, thereby before acid treatment, be implemented in the preliminary treatment that waste wood inside contains pickling, can produce therefore then that new asbestos disperse, emission problem.
Yet, in the method for the invention, for example larger-size asbestos-containing waste material is carried out non-asbestos handled thing after the acid treatment, even suppose conveyance after this or be supplied in the processing operation of melting furnace etc. waste wood to produce to break, defective, owing to become moisture state in acid treatment stage inside, do not become dispersing/discharging of asbestos problem so can not produce with above-mentioned degree.
Particularly asbestos-containing waste material is when containing the asbestos injection material, and acid can be soaked into fully to this waste wood inside, makes it innoxious fully.
Therefore, after above-mentioned acid treatment operation, implement countermeasure to the residue of acid or leachable etc., just can be fully and carry out harmless treatment safely.
When especially the waste wood that contains asbestos and calcium being finished disintegrating apparatus in the operation and handles with cement, preferably in acid treatment, use sulfuric acid.
The waste wood that contains asbestos and calcium be impregnated in the sulfuric acid fully, thereby the non-asbestosization of asbestos, and contained calcium and sulfuric acid react and generate gypsum in this waste wood, so can be used as gypsum source as cement raw material.
Particularly preferably be, acid treatment possesses: the 1st acid that generates water soluble salt by reacting with calcium or magnesium makes the 1st operation of asbestos-containing waste material dissolving; The treatment fluid contact that makes the 1st operation is reacted with calcium and is generated the 2nd acid of water-insoluble salt, separates out the 2nd operation of water-insoluble salt; And the 3rd operation of the treatment fluid of the 2nd operation being carried out Separation of Solid and Liquid.
In the 1st operation, calcium in the asbestos or magnesium are dissolved, destroy structure, asbestos are carried out non-asbestos processing.Therefore, the asbestos-containing waste material that carries out this processing gained non-asbestos handled thing that can be used as handling safety is treated.
As the 1st acid, adopt the inorganic agent that contains inorganic acid, as inorganic acid, preferably adopt at least a kind that from hydrochloric acid, fluoric acid, phosphoric acid, nitric acid, selects.Also have, preferably this inorganic agent also contains fluorine compounds, as this fluorochemical, preferably adopts at least a kind that selects from fluoride, silicofluoride, boron fluoride.
Secondly, in the 2nd operation, the treatment fluid contact that makes the 1st operation is reacted with calcium and is generated the 2nd acid of water-insoluble salt, and water-insoluble is salted out.Particularly, utilize sulfuric acid just can calcium sulfate be separated out as the 2nd acid.
In the 3rd operation, the treatment fluid of the 2nd operation is carried out Separation of Solid and Liquid.Residue after the separation is the calcium sulfate accessory substance that contains a large amount of calcium sulfate, the gypsum source in the time of can utilizing it as manufacturing cement.
The concentration of the acid of being added in each treatment process has no particular limits, and for example the concentration of the 1st acid is so long as the condition that can make asbestos carry out non-asbestos reaction gets final product, and generally speaking concentration is higher, more can be at short notice and carry out non-asbestos processing in large quantities.In addition, also be, get final product that the visual field conditions of concentration when using sulfuric acid etc. is suitably set so long as can separate out the concentration of calcium sulfate about the 2nd acid.
As an example, the hydrogen ion concentration of the 1st acid of adding in the 1st operation is the degree of 3mol/L, and the hydrogen ion concentration of treatment fluid of having handled the moment of asbestos in the 1st operation is 10
-4The degree of mol/L.Then, in the 2nd operation, add sulfuric acid again, thereby make the hydrogen ion concentration of the treatment fluid that the 3rd operation filters return to the degree of 1.6mol/L.Therefore, utilize this filtered treatment fluid again, just can suppress the consumption of the acid used in the method for innocent treatment of asbestos as the 1st acid.
Preferably, before asbestos-containing waste material is carried out above-mentioned acid treatment or during above-mentioned acid treatment, carry out fragmentation, pulverizing herein, with air-tight state.
The asbestos-containing waste material that possesses like this environmentally safe carries out fragmentation/pulverization process, acid treatment, for example with cement kiln, preferably cement making equipment such as cement rotary kiln is handled, preferably carry out the operation of melt process, even thereby any asbestos-containing waste material of form such as larger-size asbestos-containing waste material, also can be effectively and safe, fully innoxious.
Particularly asbestos-containing waste material is carried out non-asbestos processing after carrying out fragmentation/pulverizing, acid treatment under the air-tight state, the handled thing of gained with cement kiln, cement rotary kiln preferably, be supplied to melt process, thereby asbestos can not disperse/discharge, but safe handling is minimum to the influence of healthy aspect.
Herein, air-tight state be meant asbestos directly with operating environment in free atmosphere (removing the interior atmosphere of confined space) state of contact, for example can enumerate and can give airtight fragmentation/pulverizing that fragmentation/pulverizer carried out and handover from this fragmentation/pulverizer to the acid treatment container for giving airtight handover state by casing by casing, perhaps use can give the state etc. that airtight acid treatment container is realized fragmentation/pulverizing by casing.
Like this asbestos-containing waste material is carried out fragmentation/pulverization process, can easily make asbestos become non-asbestos handled thing, and these non-asbestosization also can be implemented at short notice by acid treatment.
When particularly asbestos-containing waste material being carried out acid treatment, preferably, impregnated in above-mentioned the 1st acid, when carrying out fragmentation/pulverization process simultaneously, suitably carrying out the operation of fragmentation/pulverizing that asbestos can not disperse/discharge simultaneously and make asbestos-containing waste material become the acid treatment operation of non-asbestos handled thing.
Also have, asbestos-containing waste material is as long as be to form moisture state by acid at least, thereby can under the state that in a manner described asbestos-containing waste material be impregnated in the acid, implement fragmentation/pulverizing, asbestos-containing waste material is immersed in when forming moisture state in the acid, it is taken out from acid, implement fragmentation/pulverizing.
Also have, as the additive method that asbestos-containing waste material is carried out fragmentation/pulverizing under air-tight state, for example have and can give airtight fragmentation/pulverizer and handover from this fragmentation/pulverizer to the acid treatment container for giving airtight handover state by casing by casing, perhaps use can be given the method for airtight acid treatment container by casing.
As this method, can enumerate configuration fragmentation/pulverizer, transfer device and acid treatment container, the method that these devices are covered with an airtight casing, or for fragmentation/pulverizer, transfer device and acid treatment container by can give respectively airtight mode to each device implement sealing, the method that connects etc.
Device as carrying out fragmentation/pulverizing to asbestos-containing waste material can use the known device that the building materials waste wood is carried out fragmentation/pulverizing.
Particularly install sealable mode, can enumerate impact crusher, hammer mill, ball mill, longitudinal type grinding machine, tower mill etc. as each.
So just can be fully, easily carry out non-asbestosization by acid to asbestos-containing waste material that for example the corrugated blank equidimension is big.
In addition, in just asbestos-containing waste material not being carried out the non-asbestos processing method that the acid-treated operation of fragmentation/carry out all to pieces carries out, for example for very fine and close asbestos-containing waste material, acid sometimes is difficult for soaking into, and is difficult for giving until waste wood inside innoxious fully in the practicality.
Yet, to the non-asbestos handled thing of asbestos-containing waste material after carrying out fragmentation/pulverization process, acid treatment under the air-tight state, owing to can carry out fragmentation/pulverization process safely, and after fragmentation/pulverizing, carry out acid treatment, historical facts or anecdotes use can give until waste wood inside innoxious fully, in thereafter conveyance or be supplied in the processing operation of melting furnace etc., can not produce becomes dispersing/discharging of asbestos problem.
Therefore, after above-mentioned acid treatment operation, implement countermeasure to the residue or the leachable of acid, just can be fully and carry out harmless treatment unchangeably.
Below enumerate the example of the non-asbestos processing in the acid treatment of asbestos-containing waste material of the present invention.In addition, example 2 is the examples that asbestos-containing waste material carried out fragmentation/pulverizing before acid treatment under air-tight state.
Wherein, fluoride ion concentration is represented the fluoride that the is added value in whole 100% whens disassociation, " part " expression mass parts, and " % " represents quality %.
Also have, the quantitative analysis of asbestos is to be the value that benchmark is measured with JIS A 1481 " the asbestos containing ratio assay method in the building material made ", the employed x-ray analysis device of quantitative analysis (Spectris (Spectris) (limited company)) Panalitical divisional system X ' pert pro) in the lower limit of quantitation value of each asbestos be choysotile 0.026%, amosite 0.008%, crocidolite 0.012%.
Example 1
At 95 parts 10% hydrochloric acid (Northeast chemistry limited company system: 35% hydrochloric acid is through the dilution) aqueous solution, the aqueous solution (the hydrogen ion concentration: 2.81mol/LpH value=-0.45 of 5 parts ammonium fluoride (Northeast chemistry limited company system), fluoride ion concentration: respectively flood 20 parts choysotile 27000mg/L=1.4mol/L2.9%), amosite, each asbestos standard test portion of crocidolite (measuring the obtained standard test portion of association) by (company) Japanese operating environment, dissolved 3 hours down at 40 ℃, the residual rate of each asbestos is measured with above-mentioned quantitative analysis method, below above-mentioned lower limit of quantitation.
Example 2
The cement tie-plate that contains choysotile 3.4%, amosite 36.2% and crocidolite 8.1% (corrugated material (ス レ one ト material)), in the glove compartment of band HEPA filter, use hawkbill to carry out coarse crushing (maximum particle diameter is the degree of 1～2cm), use the IKA corporate system to analyze grinding machine, under sealing state, pulverize.
In 95 parts 10% hydrochloric acid (Northeast chemistry limited company system: 35% hydrochloric acid is through the dilution) aqueous solution, 5 parts the aqueous solution (hydrogen ion concentration: 2.81mol/LpH value=-0.45 of ammonium fluoride (Northeast chemistry limited company system), fluoride ion concentration: flood 20 parts above-mentioned crushing cement plate (corrugated material) 27000mg/L=1.4mol/L2.9%), dissolved 3 hours down at 40 ℃, the residual rate of each asbestos is measured with above-mentioned quantitative analysis method, below above-mentioned lower limit of quantitation.
Example 3
At 95 parts 10% hydrochloric acid (Northeast chemistry limited company system: 35% hydrochloric acid is through the dilution) aqueous solution, 5 parts 46% the aqueous solution (hydrogen ion concentration: 2.81mol/LpH value=-0.45 of fluoridizing hydracid (Northeast chemistry limited company system), fluoride ion concentration: respectively flood 20 parts choysotile 23000mg/L=1.4mol/L2.4%), amosite, each asbestos standard test portion of crocidolite (measuring the obtained standard test portion of association) by (company) Japanese operating environment, dissolved 3 hours down at 40 ℃, the residual rate of each asbestos is measured with above-mentioned quantitative analysis method, below above-mentioned lower limit of quantitation.
Preferably in the disposing waste liquid after asbestos-containing waste material is carried out non-asbestos processing by above-mentioned acid treatment, add alkali and neutralized, generate sediment.
Particularly, can impregnated in asbestos-containing waste material and be in contact with it in the above-mentioned processing aqueous solution and carry out harmless treatment, filter the insoluble part of gained, and in filtrate, add alkali and neutralized, the sediment that generates filter, dehydration, acquisition sediment piece; Also can impregnated in asbestos-containing waste material and be in contact with it in the above-mentioned processing aqueous solution and carry out harmless treatment, not filter the insoluble part of gained, add alkali and neutralized, filter then, dewater, obtain the sediment piece.
In the waste liquid that disposes after asbestos-containing waste material is given harmless treatment with the above-mentioned processing aqueous solution, for example be dissolved with fluorine ion, ammonium ion, hydrogen ion, chlorion, calcium ion, silicic acid ion, iron ion, aluminium ion, magnesium ion, sulfate ion etc.
In this solution, for example can add alkali such as NaOH, calcium hydroxide, calcium oxide, calcium carbonate, thereby generate calcirm-fluoride (CaF
2), iron hydroxide (Fe (OH)
3), aluminium hydroxide (Al (OH)
3), magnesium hydroxide (Mg (OH)
2), sediment such as silicate compound, cooperate containing the raw material of these sedimentary blocks when making clinker.Particularly in acid treatment, use the aqueous acid that contains fluorochemical and inorganic acid, in the waste liquid that disposes, contain fluorine ion, when generating calcirm-fluoride in sediment, the raw material when can be used as the employed clinker of the fast rigid cement of the clinker of making the fluorinated calcium aluminate, hope cooperates.
As the cement of fluorinated calcium aluminate, for example can enumerate extra rapid hardening cement.
When making the cement as the fluorinated calcium aluminate of the fast rigid cement as quick hardening cement with hope, because except that the employed raw material of general Portland cement, necessary use fluorite (CaF
2), aluminium aluminite (Al
2O
3) as raw material, what generate the fast hard component of conduct contained in the cement fluoridizes calcium aluminate 11CaO7Al
2O
3CaF
2So, can the above-mentioned sediment that generates by neutralization after filtration, the block of dehydration gained supplies as the raw material of this clinker.
In the method for the invention, when asbestos-containing waste material is corrugated blank, above-mentioned through acid-treated non-asbestos handled thing, preferably do not carry out fragmentation/pulverization process, but in cement equipment, handle, preferably by cement kiln, more preferably melting furnace such as cement rotary kiln carries out melt process.
About the melt process in the cement equipment, during for example the containing the asbestos corrugated material and move into the melt process field of the size of disintegrating into 50cm * 50cm degree at the disintegration scene, in the melt process field, do not carry out further fragmentation, but, it is directly dropped in the melting furnace via above-mentioned acid treatment.
So just can handle by high-temperature fusion, the asbestos that may remain in the asbestos-containing waste material inside after the acid treatment are carried out harmless treatment fully, and can handle remaining acid or leachable that acid treatment causes, and its raw material as clinker can be utilized again.
This cement kiln can preferably use clinker to burn till the cement rotary kiln in workshop, utilizes this cement kiln, can carry out melt process once in a large number, equably, and can make clinker, can reclaim the use asbestos-containing waste material effectively.
In addition, handled thing by above-mentioned acid treatment, non-asbestos gained is during for the handled thing of winding-up waste wood, with it at melting furnace, preferably burn till when carrying out melt process in the cement kiln of using in the workshop at clinker, as shown in Figure 1, can receive operation to arbitrary operations such as cement kiln supply operation at following raw material, supply is via above-mentioned acid-treated non-asbestos handled thing.
Particularly, then can make the clinker of fluorinated calcium aluminate if, specifically be that above-mentioned sediment piece uses as raw material by the sediment that above-mentioned alkali treatment obtained.
When making cement, roughly be divided into material process, firing process, finish operation, below describe with reference to Fig. 1.
This material process roughly is divided into raw material and receives operation, pulverizing/classification operation.
Receive in the operation at raw material, at first, burn till the raw material of usefulness with the clinker that comes from carrying outside the venue, promptly lime stone as main body, receives clay, silica, iron material etc. respectively by reception funnel 1 in addition.
When this raw material is bulk, disintegrating machine (among the figure not expression) is set in the downstream of reception funnel 1, it is crushed to set particle diameter after, by conveyer each raw material is stored in the raw material bunker 2.
Then, in the pulverizing/classification operation of material process, the raw material of raw material bunker 2 is mixed pulverizing by " raw material pulverizing machine " (raw material grinding machine), carry out classification, be modulated into stable powder material by " grader ".
At present, this raw material pulverizing machine adopts " the longitudinal type grinding machine " 3 of these the 3 kinds of functions of classification that have drying, pulverizing, meal and micro mist concurrently mostly.
Then, the powder material of gained, after for example being mixed equably, import in the raw material repository 5 by mixing bunker 4.
In the processing method of asbestos-containing waste material of the present invention, blow when paying waste wood in processing, can similarly import reception funnel 1 to non-asbestos handled thing and other raw materials after the acid treatment, store in addition as raw material, import in the above-mentioned pulverizer 3, perhaps can not store especially yet and directly import in the pulverizer 3, perhaps can in this material process, not import yet.
Secondly, the powder material of being modulated via the above-mentioned raw materials operation is via firing process.
This firing process is that powder material is heated to both fixed temperatures, by making it present the operation of being burnt till as the mode of the hydraulic characteristic of cement.
This firing process roughly is divided into cement kiln supply operation, firing process, refrigerating work procedure.
In cement kiln supply operation, at first,, then it is dropped in rotary kiln 8 being heated in the powder material input preheating device (pre-heater) 6.
Cement raw material one side decline in preheating device 6 of putting in the preheating device 6 is heated to 800～900 ℃ on one side.
The heating of the cement raw material in the preheating device 6 is undertaken by send into hot blast in preheating device 6.
In addition, preheating device 6 is provided with roaster 7 in lower floor mostly.
In firing process, heat and the cement raw material of delivering to cement rotary kiln 8 rotated in 1 minute 2～3 times in this rotary kiln 8 on one side and move to Way out by preheating device 6, one side is burnt till under the high temperature of 1500 ℃ of degree and is become sintered body (clinker), is removed from rotary kiln 8.
Burning till of cement raw material in this rotary kiln 8 is towards kiln tail (dropping into a side of cement raw material) direction by the direction of (taking out a side of sintered body) before the kiln of rotary kiln 8, make the micro mist carbon burning and it is sent into and carry out in the rotary kiln 8, temperature in this rotary kiln 8, at the kiln tail is about 1000 ℃ degree, maximum temperature is about 1400～1500 ℃, is about 1200 ℃ degree before the kiln.
Then, the sintered body that takes out from rotary kiln 8 is delivered to the cooler 9.
In refrigerating work procedure, the sintered body that takes out from rotary kiln 8 is given chilling by cooler 9 with forced air-cooling, deliver to and finish operation.
In the processing method of asbestos-containing waste material of the present invention, when handling the winding-up waste wood, no matter is the non-asbestos handled thing after the acid treatment to import via material process in the preheating device 6, still before the kiln of rotary kiln 8, import, still import at the kiln tail, as long as can carry out melt process in cement kiln, the period of supply has no particular limits.
Also have, when handling corrugated blank, from the kiln tail supply of cement kiln.
So just can under situation about not pulverizing, directly be supplied to cement kiln to above-mentioned harmless treatment thing with bulk, even just in case the harmless treatment under the above-mentioned acid treatment is incomplete, also can prevent to pulverize dispersing, discharging of the asbestos that caused, and compare with the situation of before kiln, supplying, the harmless treatment thing is stranded in the kiln for a long time, thereby has melt process advantage more completely.
As mentioned above, while the non-asbestos handled thing material after the acid treatment in cement raw material drops into rotary kiln rotates the heating and melting processing that for example stands 20～60 minutes under 1000～1500 ℃ in rotary kiln.
At this moment, preferably, making maximum temperature is more than 1450 ℃, and is more than 5 minutes in the time of heating under the temperature more than 1450 ℃.
By this heat treated, asbestos-containing waste material is given fusion, burns till and form sintered body.
The condition of the temperature and time that above-mentioned heat treated is related is general cement firing condition, so can handle this waste wood with the condition of common manufacturing cement.
Also have, when carrying out this melt process, look it is required, also can add flux.
As this flux, for example can use fluorine compounds such as barium compounds such as carbonate compounds such as silicate compounds such as phosphate cpds such as boronic acid compounds such as boric acid, borax, line borate, tincalcite, phosphoric acid, sodium phosphate, calcium phosphate, silicic acid, sodium metasilicate, potassium silicate, sodium carbonate, potash, lithium carbonate, brium carbonate, barium sulfate, hydrogen fluoride, calcirm-fluoride etc.
Also have, if add this flux, then fusion becomes rapidly, carries out in heterogeneity easily, thereby preferably adds this flux in melt process, but be not to add.
The fusing point that this flux has when making fusion reduces or makes the function that the melting time shortens.
In the clinker sintered body that obtains like this, be purpose to adjust cement setting time, look it is required and add gypsum, through by finishing the finish operation of pulverizer (finishing grinding machine), make cement with its pulverizing.
Particularly in acid treatment, use when containing the aqueous acid of fluorochemical and inorganic acid, if sediment through above-mentioned alkali treatment obtained, specifically be to use as raw material by the sediment piece that calcirm-fluoride generates, then can make the clinker of fluorinated calcium aluminate, can obtain the cement of fluorinated calcium aluminates such as quick hardening cement.
On the other hand, the asbestos-containing waste material that contains asbestos and gypsum, what particularly contain asbestos and gypsum contains asbestos winding-ups waste wood, the handled thing that gives non-asbestos processing gained by acid treatment can be used as the gypsum source of cement when making and uses, finish down the above-mentioned pulverizer of finishing down in the operation by cement, mixed with above-mentioned clinker (sintered body) and make cement.
Have again, can as mentioned above the waste wood that contains asbestos and calcium by non-asbestos handled thing that sulfuric acid treatment obtained, and be the material that has generated gypsum, and use because of having material that above-mentioned the 1st～the 3rd acid treatment operation generated non-asbestos handled thing and the gypsum gypsum source when making as cement, finish down the above-mentioned pulverizer of finishing in the operation by cement, mixed with above-mentioned clinker (sintered body) and make cement.
Shown in the 2nd figure, particularly the clinker of for example supplying from the clinker storehouse 1 ' of storing clinker is at first pulverized by preparation pulverizer 3 '.
The waste wood that contains asbestos and calcium that contains asbestos and gypsum waste wood, generated gypsum through above-mentioned non-asbestos processing after the above-mentioned non-asbestos processing is stored in the gypsum field 2 ' as the gypsum source.
Clinker after this precomminution and containing asbestos and the gypsum waste wood importing cement pulverizer (finishing grinding machine) 4 ' after the above-mentioned harmless treatment of gypsum field 2 ' supply, pulverize mixing.
The crushed mixture that is obtained is imported in the separator 5 ', and the powder of the particle size range that acquisition is wished is as Portland cement 7 '.
Also have, by above-mentioned separator 5 ' the big cement powder of granularity is imported in the cement pulverizer (finishing grinding machine) 4 ' once more and pulverized.
Look it is required, also can in the finished ground cement of the particle size range that is adjusted into hope by separator 5, add flying dust or blast furnace residue powder, mix modulation flyash cement or blast-furance cement 8 ' by mixer 6 ' equably.
In addition, contain asbestos and gypsum waste wood or contain asbestos and the above-mentioned non-asbestos handled thing of calcium waste wood contains gypsum as active ingredient, contain the non-asbestos product that transforms by asbestos as impurity.
On the other hand, when for example making normal portland cement, the cooperation ratio of gypsum is with SO in the cement
3Be scaled the degree of 2～3 weight %.
Therefore, the cooperation limit of the non-asbestos handled thing in the normal portland cement is with SO
3Conversion can reach the degree of 2～3 weight %.
The cement that is obtained according to the present invention has stable performance as cement, and the cement of Huo Deing has stable performance like this, can make contain asbestos winding-ups waste wood fully, innoxious and seek to utilize again safely.
Industrial applicibility
The processing method of asbestos-containing waste material of the present invention, no matter the proterties of asbestos-containing waste material is how, All can effectively be applicable to all waste wood such as corrugated blank, winding-up material.
Also have, also applicable to clinker or the cement of making this waste wood of recycling.
Claims (20)
1. the processing method of an asbestos-containing waste material is characterized by, and contains pickling in containing the waste wood of asbestos, the asbestos in the described waste wood is given non-asbestosization obtain handled thing, and then handle this handled thing in cement making equipment.
2. according to the processing method of the asbestos-containing waste material of claim 1 record, it is characterized by, the processing in the described cement making equipment is a melt process of utilizing cement kiln to carry out.
3. according to the processing method of the asbestos-containing waste material of claim 2 record, it is characterized by, described asbestos-containing waste material is a corrugated blank, and described cement kiln is the cement rotary kiln, and from the kiln tail of this cement rotary kiln supply described non-asbestos change handled thing.
4. according to the processing method of asbestos-containing waste materials of claim 2 or 3 records, it is characterized by, described non-asbestos change handled thing not bad land be supplied to cement kiln.
5. according to the processing method of the asbestos-containing waste material of any record in the claim 1～3, it is characterized by, in asbestos-containing waste material, during dipping acid, this waste wood that contains asbestos is carried out fragmentation/pulverization process under air-tight state.
6. according to the processing method of the asbestos-containing waste material of claim 5 record, it is characterized by, described air-tight state is that the waste wood that contains asbestos is immersed in state in the acid.
7. according to the processing method of the asbestos-containing waste material of claim 5 record, it is characterized by, described air-tight state is for giving airtight fragmentation/pulverizings that fragmentation/pulverizer carried out and the handover from this fragmentation/pulverizer to the acid treatment container is to give airtight handover state by casing by casing, and perhaps use can give the state that airtight acid treatment container is realized fragmentation/pulverizing by casing.
8. according to the processing method of the asbestos-containing waste material of claim 2 record, it is characterized by, described asbestos waste wood is an asbestos winding-up waste wood, processing in this cement equipment be the raw material that clinker burns till the workshop accept the non-asbestos change of supply in arbitrary operation of operation to the cement kiln supply operation handled thing, carry out melt process by cement kiln.
9. according to the processing method of the asbestos-containing waste material of any record in the claim 2～8, it is characterized by, acid is to contain the fluorine-containing compound and the aqueous acid of inorganic acid, non-asbestos handled thing is with carrying out this solution after the acid treatment and the sediment that generates in the alkali and to asbestos-containing waste material, raw material when cooperating this sediment as the clinker of making the fluorinated calcium aluminate carries out melt process at described cement kiln.
10. according to the processing method of the asbestos-containing waste material of claim 9 record, it is characterized by, this sediment contains calcirm-fluoride, aluminium hydroxide, iron hydroxide, magnesium hydroxide and silicate compound.
11. the processing method according to the asbestos-containing waste material of any record in the claim 2～10 is characterized by, described non-asbestos change handled thing be supplied to cement kiln with flux.
12. the processing method according to the asbestos-containing waste material of claim 1 record is characterized by, described cement making equipment is that cement is finished the disintegrating apparatus in the operation, non-asbestos change the gypsum source of handled thing when making as cement cooperate.
13. the processing method according to the asbestos-containing waste material of claim 12 record is characterized by, this non-asbestos change handled thing be in the waste wood that contains asbestos and gypsum, to contain pickling, asbestos contained in the described waste wood are given non-asbestosization obtain.
14. processing method according to the asbestos-containing waste material of putting down in writing in claim 12, it is characterized by, described non-asbestos change handled thing be in the waste wood that contains asbestos and calcium, to contain pickling, asbestos contained in the described waste wood are given non-asbestosization, and contained calcium and sulfuric acid are reacted generate gypsum and obtain.
15. processing method according to the asbestos-containing waste material of claim 12 record, it is characterized by, non-asbestos handled thing is the solid constituent that obtains by following operation: by reacting the 1st operation that the waste wood that contains asbestos is dissolved in the 1st acid that generates water soluble salt with calcium or magnesium; The treatment fluid of the 1st operation is contacted with sulfuric acid, separate out the 2nd operation of calcium sulfate; And the 3rd operation of the treatment fluid of the 2nd operation being carried out Separation of Solid and Liquid.
16. the processing method according to the asbestos-containing waste material of any record in the claim 12～15 is characterized by, described waste wood is that the winding-up material is disintegrated and the waste wood that generates.
17. the processing method according to the asbestos-containing waste material of any record in the claim 1～13,15～16 is characterized by, acid is the acid of selecting from the group that phosphoric acid, sulfuric acid, nitric acid, hydrochloric acid and fluoric acid are formed more than a kind.
18. the method for innocent treatment of asbestos, it is characterized by, in the processing method of the asbestos-containing waste material that claim 17 is put down in writing, acid is to add fluoride and inorganic acid and the aqueous acid that obtains, wherein, described fluoride is from the fluoride salt of alkali metal, alkaline-earth metal or ammonia and fluoridizes at least a kind of fluoride selecting the group that hydracid forms, and described inorganic acid is that the pH value by the aqueous acid that is obtained becomes at least a kind of inorganic acid that the mode below 1 is selected from the group that hydrochloric acid, sulfuric acid and nitric acid are formed.
19. the method for innocent treatment according to the asbestos-containing waste material of claim 18 record is characterized by, described fluoride is that the mode that the fluoride ion concentration in the aqueous acid when having dissociated by whole ion guns becomes 1.5～10 weight % is added.
20. the method for innocent treatment of asbestos-containing waste materials according to claim 18 or 19 records is characterized by, and is 3～100 by weight with respect to the cooperation ratio of the aqueous acid of asbestos-containing waste material.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP288001/2006 | 2006-10-23 | ||
| JP288003/2006 | 2006-10-23 | ||
| JP2006288001 | 2006-10-23 | ||
| JP288002/2006 | 2006-10-23 | ||
| JP288004/2006 | 2006-10-23 | ||
| JP288005/2006 | 2006-10-23 | ||
| JP094326/2007 | 2007-03-30 | ||
| JP143748/2007 | 2007-05-30 | ||
| JP195474/2007 | 2007-07-27 |
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|---|---|
| CN101528371A true CN101528371A (en) | 2009-09-09 |
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ID=41095692
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800394872A Pending CN101528371A (en) | 2006-10-23 | 2007-10-23 | Method of treating asbestos-containing waste material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150493A (en) * | 2014-07-27 | 2014-11-19 | 许盛英 | Acidified asbestos |
| CN105378194A (en) * | 2013-09-27 | 2016-03-02 | 独立行政法人产业技术综合研究所 | Heat treatment device and heat treatment method |
| CN108290186A (en) * | 2015-09-22 | 2018-07-17 | P·颇纪 | It neutralizes and the movement or fixing means that recycle asbestos waste and equipment |
| CN114057205A (en) * | 2021-11-26 | 2022-02-18 | 陕西汉鼎辉能源材料科技有限公司 | Comprehensive treatment method of asbestos tailings |
-
2007
- 2007-10-23 CN CNA2007800394872A patent/CN101528371A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105378194A (en) * | 2013-09-27 | 2016-03-02 | 独立行政法人产业技术综合研究所 | Heat treatment device and heat treatment method |
| CN104150493A (en) * | 2014-07-27 | 2014-11-19 | 许盛英 | Acidified asbestos |
| CN104150493B (en) * | 2014-07-27 | 2016-04-06 | 许盛英 | Asbestos after acidifying |
| CN108290186A (en) * | 2015-09-22 | 2018-07-17 | P·颇纪 | It neutralizes and the movement or fixing means that recycle asbestos waste and equipment |
| CN108290186B (en) * | 2015-09-22 | 2021-07-30 | P·颇纪 | Mobile or stationary method and apparatus for neutralizing and reusing asbestos waste |
| CN114057205A (en) * | 2021-11-26 | 2022-02-18 | 陕西汉鼎辉能源材料科技有限公司 | Comprehensive treatment method of asbestos tailings |
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Application publication date: 20090909 |