CN103392015B - The method of modifying of coal and/or iron ore slurry - Google Patents
The method of modifying of coal and/or iron ore slurry Download PDFInfo
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- CN103392015B CN103392015B CN201280010072.3A CN201280010072A CN103392015B CN 103392015 B CN103392015 B CN 103392015B CN 201280010072 A CN201280010072 A CN 201280010072A CN 103392015 B CN103392015 B CN 103392015B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The object of the invention is to, provide the method for modifying of coal and/or iron ore slurry and the manufacture method of the raw material of modification thus, to reduce more easily the mobility of deposit. To achieve these goals, in coal and/or iron ore slurry, add also mixing water solubleness high molecular compound and carry out the modification of coal and/or iron ore slurry. And then, carry out the manufacture of modified feedstock by this modification. In addition, above-mentioned water-soluble high-molecular compound preferred anionic w/o type emulsion polymer.
Description
Technical field
This technology relates to the method for modifying of coal and/or iron ore slurry, and the system of the raw material of modification thusMaking method.
Background technology
Coal and/or iron ore (below also referred to as " iron ore etc. ") at mining are transported by beltThe means of transport of machine, lorry, freighter or truck etc. is transported to the on-the-spot inside and outside keeping storage site of exploitation or locatesReason equipment etc. is located, and is taken care of and stores or processed. Afterwards, iron ore etc. is by ribbon conveyerDeng handbarrow be transported to the facility (for example steel plant, generating and the industrial thermal source that use iron ore etc.Produce facility, factory etc.) locate, be used.
In such exploitation scene, means of transport, treatment facility, use facility etc., have more following theseSituation: iron ore etc. are caught in the rain; When keeping or cleaning etc., water is spread across or is sprayed onto on iron ore etc.; Coal and/ or iron ore soaked etc. Therefore, at exploitation scene, treatment facility, use facility (especiallySteel plant etc.) etc. in, the situation that iron ore etc. contact with water is a lot.
So, because coal and/or iron ore contact with water and contain water, can generate coal and/or iron oreSlurry. Such slurry need to be recycled as raw material, or as waste treatment.
Then, these slurry fluidities are large, are difficult to carry out various operations or processing. For example,, even by itStore and keeping outdoor, because mobility is large, be therefore difficult to pile high, be also not easy in addition transport.
Therefore the method for modifying that, proposes to be useful on recycling or dispose the slurry of coal or iron ore. For exampleKnow that useful concrete or sandy soil etc. arrange pit, and therein the slurry of coal or iron ore is carried out to daylight and doDry and dewater method; Utilize the method for the dewater unit dehydration of filter press; With specific porous media shapeBecome pit, add therein the slurry of coal or iron ore, utilize Separation of Solid and Liquid to make the micro mist in this slurry formerMaterial waits the method (patent documentation 1) that is adsorbed in porous media and collect powder material etc.
But for pit is set, wide space or the pit that must be useful in advance formation pit are executedThe operation of work, and solidifying dry needs for a long time in pit. In addition, in order to use dehydration treatment equipment,Need the equipment investment for this device is set in advance and space is set, and must be transported to this and specifically establishPut space place.
Therefore, wish can be more easily to coal or iron ore, with and the slurry method of carrying out modification.
Prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 8-196820 communique
Summary of the invention
The problem that invention will solve
This technology in view of the above problems and present situation, provide coal and/or iron ore, with and slurry simplerJust method of modifying, and the manufacture method of the raw material of modification thus.
For the method for dealing with problems
The inventor concentrates on studies, and its result, because pulp-like is difficult and be difficult to easyIn the coal and/or iron ore slurry of ground modification, add and mixing water solubleness high molecular compound, thus energyReduce easily the mobility of this slurry, the stable processing of the modifier obtaining becomes easy.
Thereby this technology relates to following (1)～(7).
(1) method of modifying of coal and/or iron ore slurry, is characterized in that, at coal and/or iron ore slurryIn material, add and mixing water solubleness high molecular compound.
(2) method of modifying as described in above-mentioned (1), is characterized in that above-mentioned water soluble polymerCompound is anionic property w/o type emulsion polymer.
(3) method of modifying as described in above-mentioned (1) or (2), is characterized in that, adds and mixesAfter above-mentioned water-soluble high-molecular compound, further add inorganic metal salt.
(4) method of modifying as described in above-mentioned (3), wherein, above-mentioned inorganic metal salt is aluminium salt.
(5) manufacture method of modified feedstock, is characterized in that, in coal and/or iron ore slurry, addsAnd mixing water solubleness high molecular compound.
(6) manufacture method as described in above-mentioned (5), is characterized in that, is adding and is mixing above-mentioned waterAfter solubleness high molecular compound, further add inorganic metal salt.
(7) coal that contains water-soluble high-molecular compound and/or iron ore slurry modifier.
The effect of invention
According to this technology, can be more easily produced by coal and/or iron ore and at products such as steel plantRaw coal and/or iron ore slurry are modified as easy to handle deposit. Thus, can obtain easy processingThe raw material that contains coal and/or iron ore.
Brief description of the drawings
Fig. 1 represents that iron ore is the mobility improvement test of slurry: adding water-soluble high-molecular compoundIn (A agent) and inorganic metal salt (B agent) situation about stirring (be respectively 1:1,2:1,3：2，3：3，5：5kg/m3) or at (the 0:0kg/m stir in the situation that without adding3）Result.
Fig. 2 represents the mobility improvement test of coal measures slurry: adding water-soluble high-molecular compound (AAgent) and situation about stirring under (1,2,3kg/m3) or in the feelings that stir without adding(0kg/m under condition3) result.
Fig. 3 represents the dry promotion test of coal measures slurry: adding water-soluble high-molecular compound (A agent)And (5:5kg/m in inorganic metal salt (B agent) situation about stirring3) or without add and(0:0kg/m in situation about stirring3) result.
Detailed description of the invention
This technology coal and/or iron ore, with and slurry in add and mixing water soluble macromolecular chemical combinationThing. Now, preferably add and mix above-mentioned water-soluble high-molecular compound after further add and mixInorganic metal salt.
Coal and/or iron ore slurry as handling object refer to the slurry that at least contains coal and/or iron oreMaterial. And then, wherein also can further contain the composition of the iron-smelting raw material that serves as coke or slag etc.
As above-mentioned coal and/or iron ore slurry, can enumerate as mentioned above in the material storage yard in mine,In the treatment facility of pulverizing etc., in the scene of keeping such as the storage in stockyard etc. in the open, ribbon conveyer,In the means of transport of ship, lorry etc., in use facility of steel plant etc. etc., because iron ore etc. is moistureAnd the slurry producing etc.
For example can enumerate because the raw material of air storage in outdoor stockyard is subject to rainfall or in order to prevent powderDirt object and water of spilling etc., the raw materials such as coal or iron ore, coke, slag flow out and are deposited in gutterSlurry; The pit being stored from the water of the ribbon conveyer to cleaning transport raw material or production line, flowThe raw material going out is because rainwater etc. flows into and be deposited in the slurry in sedimentation basin (pond); By wet type control of dustDeposit in deposit or stockyard that device reclaims; With ribbon conveyer transport air storage at outdoor heapWhen raw material in, be to prevent that dust from sprinkling water and moisture slurry; From the recovery of dry dust collection deviceThing flows through and the slurry of slurry through water; In handbarrow, treatment facility, storage administrative office etc. forManagement keeping is sprinkled water and moisture slurry; The wet state in board soaking in order to store keepingSlurry; Water cleans means of transport etc. and the slurry that reclaims etc.
The fine raw material such as coal or iron ore easily becomes slurry, for example can enumerate as the size of its raw materialParticle diameter (maximum major diameter) is below 5mm.
As the coal of the handling object of this technology and/or iron ore slurry due in composition, comprise carbon component andFerrous components, does not therefore almost have water-retaining property, thereby can think and the digging in the construction site from generalSoil or mud shape sandy soil are different in proterties, are difficult to process, and make to process change but can carry out modification by this technologyObtain easily.
The moisture content of above-mentioned coal and/or iron ore slurry is not particularly limited, but preferably more than 10 quality %,Further preferably 15～80 quality %, more preferably 20～70 quality %. This moisture content can be by JISA1125Measure.
The water-soluble high-molecular compound using in this technology for example can be enumerated synthesizing water-solubility producing high-molecularCompound, semi-synthetic water-soluble high-molecular compound and water-soluble macromolecular compound etc. And, canAdopt a kind of or two or more combination in following these materials.
As above-mentioned synthesizing water-solubility macromolecular compound can enumerate polyvinyl alcohol, polyvinylpyrrolidone,Poly-(methyl) acrylamide, poly-(methyl) acrylic acid or its salt, polyethylene glycol oxide PEO,Polyvinyl methyl ether; (methyl) acrylic acid, (methyl) acrylamide, maleic anhydride, maleic acid, horseCome copolymer or its salt etc. of sour acid amides, succinimide, Yi Kang acid, crotonic acid, fumaric acid etc. DoFor example can enumerate alkali metal salt of sodium, potassium etc. etc. for this salt.
Can enumerate viscose glue, methylcellulose, cation as above-mentioned semi-synthetic water-soluble high-molecular compoundThe cellulose derivative of cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose etc.; In advanceThe starch of gelling starch, carboxyl starch, dialdehyde starch, cationic starch, glucan, dextrin etc. is derivativeThing; Cation guar gum, anion guar gum, Propylene Glycol shitosan etc.
Can enumerate starch, mannosan, guar gum, Huang as above-mentioned water-soluble macromolecular compoundVirgin rubber, sodium alginate, locust bean gum, pectin, glucan, gelatin, La Muzan glue (ラ system ザ Application ガSystem), gellan gum etc.
In addition, above-mentioned water-soluble high-molecular compound can be anionic property, cationic, nonionic,Any in negative ions. Wherein, preferably to the little anionic property of toxicity in fish and nonionic,More preferably anionic property.
In above-mentioned water-soluble high-molecular compound, preferably synthesizing water-solubility macromolecular compound.
Above-mentioned synthesizing water-solubility macromolecular compound is preferably by anionic property monomer and non-ionic monomerOne or more homopolymers as constituent or copolymer.
As above-mentioned anionic property base (anionic property monomer) for example can enumerate acrylic acid, methacrylic acid,The carboxylic acid (monomer) of maleic acid, fumaric acid, Yi Kang acid etc.; Styrene sulfonic acid, vinyl sulfonic acid, 3-The sulfonic acid (monomer) of allyloxy-2-hydroxy-propanesulfonic acid etc. etc.
In addition, for example can enumerate acrylamide as above-mentioned nonionic base (non-ionic monomer) (singleBody) or Methacrylamide (monomer) etc.
And then, in above-mentioned synthesizing water-solubility macromolecular compound, preferably acrylic acid series and/or acryloylAmine based copolymer.
As aforesaid propylene acid system and/or acrylamide based copolymer for example can enumerate acrylate homopolymer,The partial hydrolystate, third of methacrylamide homopolymer, acrylic acid/acrylamide copolymer, polyacrylamideOlefin(e) acid/Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer, acrylic acid/maleic acidDeng, they can be used separately or are used in combination. Wherein, acrylic acid/acrylamide is commonThe partial hydrolystate of polymers, methacrylamide homopolymer, polyacrylamide because of molecular weight high, therefore preferably.
The mean molecule quantity of aforesaid propylene acid amides system or acrylic acid series copolymer preferably 1,000,000～10,000,000, more preferably 5,000,000～9,000,000(intrinsic viscosity method).
In addition, in the time adopting anionic property macromolecule, generate aforesaid propylene acid system and/or acrylamideThe content of acrylic acid units when copolymer with respect to use the whole total amounts of monomer (100 % by mole),Be preferably more than 5 % by mole more preferably 20～100 % by mole.
State during as the above-mentioned water-soluble high-molecular compound of use, is not particularly limited, preferably at powderUnder powder, liquid or emulsion form, use. Especially, preferably not increasing the moisture of handling objectPowdered and the emulsion form of using in situation uses. And then, preferably at the modified effect that can reduce slurryThe lower use of emulsion form (preferably w/o type emulsion form) of the generation of the contradictory phenomena increasing with mobility.The water-soluble high-molecular compound of w/o type emulsion form can for example, by known method (, Japanese Patent Publication52-039417 communique, Japanese kokai publication sho 51-41090 communique) manufacture.
The use amount of above-mentioned water-soluble high-molecular compound is with respect to above-mentioned coal and/or iron ore slurry 1m3，To be converted into dry thing, conventionally add 0.1～15kg, and preferably interpolation scope is 1～10kg. AsFruit is the use amount within the scope of this, can make above-mentioned coal and/or iron ore slurry granulation neither too much nor too littlely,And also favourable aspect economy.
Above-mentioned water-soluble high-molecular compound is when becoming (25 DEG C: above-mentioned water soluble polymer chemical combination of the aqueous solutionConcentration 0.1～0.3 quality % of thing) time, preferably pH6～8.
The interpolation of above-mentioned water-soluble high-molecular compound and mixing can suitably be carried out, as an example,Can in above-mentioned slurry, add after above-mentioned water-soluble high-molecular compound common every 1m3Slurry mixing 0.5～About 60 minutes. And then, in the time that coal and/or iron ore slurry contain oil content, add above-mentioned water-solubleAfter macromolecular compound, from improving the viewpoint of operating efficiency, preferably place 5～60 minutes laggardRow mixes.
By carrying out above-mentioned mixing (stirring), thereby make above-mentioned water-soluble high-molecular compound contain this slurryMoisture in material, and make to be dispersed with in this slurry above-mentioned water-soluble high-molecular compound. Therefore, above-mentioned waterEach particle of solubleness high molecular compound and coal or iron ore is crosslinked, and constraint moisture. Thus, can obtainHandled thing (through the raw material of modification) that mobility has reduced, i.e. modifier.
Be not particularly limited for the mixer or the mixing roll that mix for above-mentioned, for example, can use backhoe to digThe existing known machine of soil machine, excavator, stabilizer, double-shaft mixer etc.
In addition, now, treatment temperature is not particularly limited, from reactive viewpoint, preferably existsUnder normal temperature (5～35 DEG C) scope, carry out.
And then, owing to adding and mixing after above-mentioned water-soluble high-molecular compound, then add and mixWhile stating inorganic metal salt, can obtain the modification deposit that further do not have sticking granule shape, outstandingThat mobility reduces, through the material (raw material) of modification, thereby preferably.
Be not particularly limited as above-mentioned inorganic metal salt, for example, can enumerate univalent metal salt, divalent metalSalt and trivalent metal salt etc. In addition, for example can be categorized as metal chloride, metal sulfate etc.
For example can enumerate the alkali metal class of sodium, potassium etc. etc. as above-mentioned monovalence metal. In addition, as above-mentionedDivalent metal can be enumerated alkaline-earth metal class and the ferrous iron etc. of calcium, barium, magnesium etc. In addition, as above-mentioned threeValency metal can be enumerated the trivalent metal of aluminium, ferric iron etc. etc.
Wherein, preferably from divalent metal salt and trivalent metal salt (removing basic anhydride), select oneSlaine more than kind.
For example can enumerate calcium chloride, calcium sulfate, barium chloride, magnesium chloride, sulphur as above-mentioned divalent metal saltDivalent metal chloride or the divalent metal sulfate etc. of acid magnesium, frerrous chloride etc.
In addition, for example can enumerate polyaluminium chloride (PAC), aluminum sulfate (sulphur as above-mentioned trivalent metal saltAcid alumina), trivalent metal chloride or the trivalent metal sulfate etc. of iron chloride, ferric sulfate etc. Wherein,Preferably aluminium salt, particularly preferably PAC or aluminum sulfate. Thus, the mobility of handled thing further reduces,Even if be subject to rainfall and also can obtain little modifier affected by environment outdoor in addition.
Can use the one in them, or combine two or more uses.
State during as the above-mentioned inorganic metal salt of use is not particularly limited, preferably at Powdered or liquidUnder the state of shape, use.
The use amount of above-mentioned inorganic metal salt is with respect to above-mentioned coal and/or iron ore slurry 1m3, to be converted intoDry thing meter, adds 0.1～15kg conventionally, and preferably interpolation scope is 1～10kg.
Mixing after the interpolation of above-mentioned inorganic metal salt, at the slurry containing above-mentioned water-soluble high-molecular compoundAfter the above-mentioned inorganic metal salt of middle interpolation, conventionally carry out 1～60 minute, preferably carry out about 1～30 minute.Owing to having promoted the independence of particle by this mixing (stirring), therefore can more stably obtain streamDeposit that moving property reduces, better modification deposit.
Now, about the mixer and the mixing roll that use, in the same manner as described above, can use existing knownMachine.
In addition, now, treatment temperature is not particularly limited, from reactive viewpoint, preferably existsUnder normal temperature (5～35 DEG C) scope, carry out.
Add and mix above-mentioned water-soluble high-molecular compound or above-mentioned water-soluble high-molecular compound andAfter inorganic metal compound, the maintenance of above-mentioned coal and/or iron ore slurry being carried out to certain hour can promoteBe dried and realize lightweight, thereby preferably. As the time of this maintenance, from the viewpoint of operating efficiency,Preferably 10～150 hours, more preferably 48～120 hours.
And then, can under this state, carry out stable granulating, thus, slurry obtains modification, can also makeThe mobility of above-mentioned coal and/or iron ore slurry reduces. And then, for mobility is reduced, and realizeLightweight, the moisture content of the modifier obtaining after dry, maintenance is preferably 10～40 quality %,More preferably 15～30 quality %.
The mechanism of the modification to this technology describes.
Above-mentioned coal and/or iron ore, with and slurry in to add the water soluble polymer of this technology (excellentSelect emulsion state) after (if the slurry that contains oil content, preferably after having added and having placed), asFruit mixes and stirs, and above-mentioned water soluble polymer is contained adjusted coal and/or the iron of moistureIn ore and this slurry, when contained moisture, water-soluble high-molecular substance is under the existence of moistureBe scattered in coal and/or iron ore and this slurry.
In the above-mentioned object of this above-mentioned coal and/or iron ore slurry etc., contain to high concentration coal or ironOre, afterwards, under the existence of water, water-soluble high-molecular compound and coal and/or iron ore are handed overConnection, can carry out granulating. By granulating, thereby moisture is strapped in this particle, slurry flowProperty is suppressed. And the improvement of the plastic fluidity by slurry, can see that material through modification is in propertyModification on shape. Even if become coal and/or iron ore before slurry, by use this under the existence of waterThe water soluble polymer (preferred emulsion state) of technology, also can complete their modification. Thereby, through changingAlso can suppress slurry even if the iron ore of property etc. contacts with water afterwards, thereby easily process.
And then, except adding the water-soluble high-molecular compound that stirs this technology, also can stir by interpolationInorganic metal salt, promotes the independence of particle. Thus, form more stable particle.
So, the coal that energy flow is large or the slurry of iron ore promptly carry out modification, and becoming canThe material of the state of piling up. In addition, even if modifier is subject to the also slurry again not such as rainfall, can preventThe only avalanche of accumulation body. In addition, modifier not only can have the independence of the transports such as easy-to-use dump truck,Also can there is the size (for example, diameter 10mm left and right) of the conveyings such as easy-to-use ribbon conveyer.
Herein, coal and/or iron ore slurry, because mobility is large and heavy, dewater also poor, and conveying is taken time,And cannot pile up on outdoor highland dry also needs for a long time.
For example,, although be to make the slurry containing iron-smelting raw materials such as coal or iron ores dry in the sun all the timeDry, and it is long-pending etc. to make its mobility reduce laggard windrow, but owing to being to carry out outdoor, thereby be easily subject to skyGas left and right, the dry time that needs length. In addition, due to rainfall, the surperficial particle of accumulation body is because fallRain etc. and flowing out, and the accumulation body that contains above-mentioned iron-smelting raw material also may avalanche.
Also adopt and have such method in addition: on the deposit that contains iron-smelting raw material of piling up (surface)Spray W/W type ethene-vinyl acetate-lactic acid vinyl emulsion, make the surface cure of accumulation body. ButBe, piling up before coal or iron ore, if it is dried to a certain degree, cannot pile up on highland,And be dried and need the time. In addition, due to this resin emulsion be sprayed onto sclerosis till need a few days, thereforeIf there is rainfall therebetween, medicament meeting and rainwater together flow out, and cannot bring into play effect.
In addition, also adopt and have the method for adding quick lime. In above-mentioned slurry, add calcium oxide (quick lime),Carry out hydration reaction and the reaction heat that produces makes moisture evaporation with the moisture in coal or iron ore and calcium oxide,Make this slurry sclerosis by hydration reaction simultaneously. Thus, can obtain moisture content reduces, is applicable to piling up or removingFortune state through modification material. But, add quick lime due to a large amount of, thus the amount of handled thingIncrease, not only place is processed in requirement, site of storage is large, and carrying amount also increases. In addition, due to greatlyAmount is used overbasic powder, and when therefore it processing, operator may be exposed to alkaline environmentUnder, the possibility that also has high alkalinity deposit dust to disperse in addition.
On the other hand, according to the method for this technology, even not in above-mentioned coal or iron ore, its slurryAdd cement or lime, do not exert an influence or produce hardly shadow when adding recyclings such as ironmakingThe raw material (above-mentioned water-soluble high-molecular compound or above-mentioned inorganic metal compound) ringing also mixes,Also can obtain low, the recycling raw material through modification of mobility (recycling raw material). , with above-mentionedMacromolecular compound also can be made raw material (recycling raw material) coal and/or iron ore, its slurry. And,Due to this raw material little effect on the human body, thereby yet do not have and be exposed to alkalescence in being uniformly mixed or in transportProblem under environment, has also improved operating efficiency and security.
In addition, because above-mentioned coal, iron ore, its slurry (deposit) obtain granulating, promoted de-Water, thus more easily dry state formed. And then, thereby when dry, the moisture content step-down of modifier becomesGently, this modifier can maintain stable graininess, therefore can easily carry, and can also pile up highly.
As mentioned above, the water-soluble high-molecular compound of this technology makes an addition to object under existing at waterIn, and mix, thereby can carry out modification to the raw material of coal and/or iron ore, and can be to coal and/orIron ore slurry carries out modification. In addition, can also manufacture the water soluble polymer chemical combination by using this technologyThing and obtain the coal of modification and/or the raw material of iron ore.
And then, what the water-soluble high-molecular compound of this technology can be for the manufacture of coal and/or iron ore raw materialThe modifier (below also referred to as " modifier ") of the modifier of modifier, this slurry etc. This modifierThe composition arbitrarily such as blending inorganic metal salt, emulsifying agent, surfactant as required. These become arbitrarilyDivide the auxiliary agent that can be used as this modifier to use, also can use with this modifier simultaneously or use respectively.And these various reagent can be any states in liquid, solid, powder etc.
For example can enumerate coal and/or iron ore (below also referred to as " iron as the object of this technology herein,Ore etc. "), moisture iron ore etc. and slurries such as iron ore etc., can be also the thing becoming before slurryMatter.
And then, at the coal of this technology and/or the method for modifying of iron ore raw material, the method for modifying of this slurryIn, above-mentioned water-soluble high-molecular compound (and then inorganic metal salt) can be directly used in or prepareBecome the aqueous solution and for above-mentioned object. In addition, above-mentioned water-soluble high-molecular compound is (and then inorganicSlaine) can be used as modifier for object. For example, make an addition to by the modifier this technologyIn coal and/or iron ore or its slurry and mix, can acquired character (dehydration, light weight, particleShape etc.) better modifier. In addition, as an example of processing method, available water solution stateThe modifier etc. of this technology process iron ore etc., also can come with the modifier of this technology of powder shaped etc.Process moisture iron ore etc.
And, " water-soluble high-molecular compound of this technology with and the aqueous solution, with contain this technologyThe modifier of water-soluble high-molecular compound " also referred to as " modifier of this technology etc. ".
Thereby this technology can provide adds and mixes this skill under the existence of water in coal and/or iron oreThe coal of the modifier of art etc. and/or the method for modifying of iron ore, through the manufacture method of the raw material of modification.
This method of modifying, through modification the manufacture method of raw material in each condition can with above-mentioned coal and/Or iron ore slurry method of modifying, through modification the manufacture method of raw material in each condition identical.
And above-mentioned " under the existence of water " refers in order to reach and above-mentioned " coal and/or iron ore slurryThe moisture content of material " identical moisture content, in coal and/or iron ore, can there is water. In addition, above-mentioned " coalAnd/or iron ore slurry 1m3" can be regarded as " and water exist under coal and/or iron ore 1m3”。
The place to use of the modifier of this technology etc. is as long as can be under the existence of water, at coal and/or iron oreThe place of adding and mixing modifier of this technology etc. in stone, is just not particularly limited. For example, as above instituteState the material storage yard that can enumerate mine, the treatment facility of pulverizing etc., the storage keeping of open storage ground etc.,The means of transport of ribbon conveyer, ship, lorry etc., the use facility of steel plant etc. etc.
Use equipment as modifier of this technology etc. for example can be enumerated: can in above-mentioned object, addThe modifier of (sprinkling etc.) this technology etc. the device stirring; The haulagman of mixing roll can be there isIn tool, add (spray etc.) and mix the device of the modifier etc. of this technology to transported above-mentioned objectDeng.
More specifically, as for transporting and the continuous modification treatment system of accumulation etc. etc., can enumerate:In means of transport in above-mentioned object is deposited in to stockyard time, or in the time being transplanted on ship, truck etc.Means of transport (for example, ribbon conveyer etc.) in there is mixing roll, with this mixing roll transportedIn above-mentioned object, add and mix the modifier etc. of this technology; Being transported in ship or from transporting in shipIn equipment, there is mixing roll, above-mentioned object (for example, having adjusted the iron ore of moisture etc.) is transported to fortuneThe fashionable modifier etc. that adds and mix this technology in above-mentioned object, and be loaded into means of transportMedium.
Also can enumerate in the means of transports such as ship, lorry, truck mixing arrangement is set in addition, in transitIn above-mentioned object, add/mix the methods such as the modifier of this technology.
Can enumerate in addition in the time of keeping and storage, with machinery or the dress that can stir (mixing) above-mentioned objectPut to add and mix the method for modifier of this technology etc.
And then, be exemplified below, but and be not limited by it. When large by the mobility in ribbon conveyer transportSlurry in the time that conveyer belt falls, spray modifier of this technology etc., and with backacter at slurry heap etc.The method of middle stir process. In the large slurry of the mobility with the transport such as truck, ship, add this technologyModifier etc. also carry out the method for mixed processing. By with scraper bowl moistening coal and/or iron ore fromIn ship, be transported to the mixing roll in the step of ribbon conveyer, thereby add continuously the modifier of this technologyDeng and carry out the method for mixed processing. Mixing roll when piling up for stockyard, thereby at iron ore etc.In add continuously modifier of this technology etc. and carry out the method for mixed processing.
Embodiment
Below specific embodiment etc. is described, but this technology being not limited by it.
The mobility of (test example 1) iron ore slurry is improved validation test
Experiment condition
With reference to testing according to the physical behavior of the cement of JISR5201, for the wet ore pulp material to after modificationVibration resistance assess, increase for 15 times by dropping shock number of times mobile testing stand from JIS regulationAdding to 50 times assesses. In addition, the situation of 0 time is also assessed.
1) slurry 0.5L is added in mortar mixer (capacity 3L). The slurry now using is table 1Shown slurry.
Slurry is the deposit in the pulp-like of steel plant's acquisition, and with concentration of iron 40～80 quality %Contain (fragmentation) iron ore, also contain (fragmentation) coal.
2) adding therein with the blending amount shown in table 2 acrylic acid/acrylamide that contains 40 quality % is total toThe anionic property w/o type emulsion polymer of polymers, and stir 30 seconds.
Herein, " the kg/m in table3" refer to anionic property w/o type emulsion polymer emulsion relativeIn 1m3The use amount (kg) of slurry.
In addition, according to the convert molecular weight of the acrylic acid/acrylamide copolymer that obtains of intrinsic viscosity be8000000. In addition, the acrylic monomers of acrylic acid/acrylamide copolymer % by mole is 35 % by mole.
And the available known method of w/o type emulsion polymer (left and right, pH6～8) is (for example, with reference to dayThis examined patent publication 52-039417 communique, Japanese kokai publication sho 51-41090 communique) manufacture, concrete andSpeech can be by adding surfactant (also comprising phase inversion agent) and acrylic acid/acryloyl in mineral oilThe monomer solution of amine, obtains through emulsion polymerization.
3) add therein afterwards, the nothing of the PAC that contains 10 quality % with the blending amount shown in table 2Machine aqueous metal salt, and stir 30 seconds.
Herein, " the kg/m in table3" refer to inorganic metal saline solution with respect to 1m3Making of slurryConsumption (kg).
4) take out sample, taking JISR-5201 as benchmark, detect testing stand slamp value (dropping shockNumber: 0 time).
5) detect testing stand is carried out to the testing stand slamp value after dropping shock.
[table 1]
| Proterties | Broken granular iron ore |
| Moisture content | 35 quality % |
| Total solid constituent concentration | 65 quality % |
| Mud proportion | 1.51 |
[table 2]
Test example 1 be the results are shown in to table 2 and Fig. 1.
As test as shown in 2-5 knownly, along with the increase of water-soluble high-molecular compound addition, fall punchingThe slamp value that hits 0 time (n=0) diminishes, and slurry fluidity reduces, and slurry fluidity is progressively changedKind.
In addition we know, experiment 2-5 and experiment 1(non-processor: former state processing) compared with, slamp value obtainsSignificantly improve.
Known in experiment 6, testing stand slamp value when dropping shock 50 times (n=50) is lower than 110mm.If the testing stand slamp value after dropping shock 50 times is below 110mm, once for the material of slurry obtainsTo abundant modification, become the form of a shape, form also can stably be maintained.
The mobility of (test example 2) coal slurry material is improved validation test
Use the coal slurry material of table 3 obtaining in steel plant, each measured value is based on above-mentioned test example 1, and withAddition shown in table 4 (use the anionic property w/o type emulsion polymer identical with test example 1 andInorganic metal saline solution) carry out the processing of slurry.
[table 3]
| Proterties | Coal measures |
| Moisture content | 41 quality % |
| Total solid constituent concentration | 59 quality % |
| Mud proportion | 1.20 |
[table 4]
Test example 2 be the results are shown in to table 4 and Fig. 2.
As test as shown in 7-12 knownly, along with the increase of water-soluble high-molecular compound addition, fallThe slamp value that impacts 0 time (n=0) diminishes, and the mobility of pulp-like reduces, and is progressively improved.
In addition we know, experiment 8-12 and experiment 7(non-processor: former state processing) compared with, slamp value obtainsSignificantly improve.
In experiment 12, dropping shock 0(n=0) and testing stand when 50 times (n=50) mobileValue is lower than 110mm. If the testing stand slamp value after dropping shock 50 times is below 110mm, onceFor the material of slurry obtains abundant modification, become the form of a shape, form also can stably be maintained.
The promotion drying effect validation test of (test example 3) coal slurry material
Slurry use be test example 2(table 3) coal slurry material. Now, " the reality based on test example 1Test condition ", (use the anionic property w/o type identical with test example 1 with the addition shown in table 5Emulsion polymer and inorganic metal saline solution), carry out the processing of slurry as experiment 14.
Slurry, in non-processor with after modification, is placed under room temperature (25 DEG C), and drierState.
[table 5]
Test example 3 be the results are shown in to table 5 and Fig. 3.
As test as shown in the of 13 and 14 knownly, compare non-processor through the underspeeding of moisture content of the material of modificationSlurry fast. Known, by adding medicament, slurry is carried out to modification, promote to be dried thereby haveEffect.
The modified test of the iron ore slurry that (test example 4) contains oil content
Use the iron ore slurry of the table 6 obtaining in steel plant, based on above-mentioned test example 1, with table 7The addition showing and adding after emulsion polymer to the standing time of mixing, carries out locating of slurryReason.
By the table 7 that the results are shown in of test example 4. As shown in table 7, containing in a large number oil content, (n-hexane is carriedGet thing) slurry in, by mixing afterwards adding after emulsion polymer further placement, fromArrive and can shorten the incorporation time that modification completes.
And, in this slurry, add and mix n-hexane, extract the oil content containing in slurry by n-hexane,Oil content using this extracted amount in slurry and be shown in table 6.
[table 6]
[table 7]
Can be confirmed by above result, by adding and mixing water dissolubility high score in coal and iron ore slurrySub-compound, thus the mobility of (improvement) slurry can be reduced. And can confirm, mobile by reducingProperty, can carry out higher accumulation.
And can confirm, by mixing the further inorganic metal that mixes after water-soluble high-molecular compoundSalt, thus can make better particle.
Can confirm thus no matter be to use water-soluble high-molecular compound, or also use water-soluble high scoreSub-compound and inorganic metal salt, can, by the material of pulp-like, form good particle. And then,In the slurry that contains oil content, if mixed at interpolation water-soluble high-molecular compound and after placing,, compared with not placing the situation of just mixing, can shorten and arrive the incorporation time that modification completes.
Industrial applicibility
Can in reducing slurry (deposit of pulp-like etc.) mobility, carry out particle by this technologyChange. In addition, by promoting the dry lightweight that also can realize. So more outstanding in changing owing to obtainingProperty material, therefore can also pile up higher this modifier, can save and process the space in place. And then,Because used water-soluble high-molecular compound and inorganic metal salt are almost harmless, therefore easily guaranteeOperating personnel's safety, and improve workability. And then, in the situation that recycling aluminium, also can be used asIron-smelting raw material recycles, and processes and is also easier in addition when as waste treatment.
Claims (20)
1. the method for modifying of coal and/or iron ore slurry, is characterized in that, at coal and/or iron ore slurryIn material, with respect to described coal and/or iron ore slurry 1m3Add and mix w/o type emulsion form, choosingFree acrylate homopolymer, methacrylamide homopolymer, acrylic acid/acrylamide copolymer, polyacrylamideThe partial hydrolystate of amine, acrylic acid/acrylamide/2-acrylamide-2-methylpro panesulfonic acid copolymer,The water soluble polymer of one or more in the group of acrylic acid/maleic acid compositionCompound 0.1～15kg.
2. method of modifying as claimed in claim 1, is characterized in that, above-mentioned water soluble polymerCompound is anionic property w/o type emulsion polymer.
3. method of modifying as claimed in claim 1 or 2, is characterized in that, on adding and mixingState after water-soluble high-molecular compound, further add inorganic metal salt.
4. method of modifying as claimed in claim 3, is characterized in that, above-mentioned inorganic metal salt is aluminiumSalt.
5. method of modifying as claimed in claim 1 or 2, is characterized in that, above-mentioned coal and/or ironThe moisture content of ore slurry is 10～80 quality %.
6. method of modifying as claimed in claim 1 or 2, is characterized in that, above-mentioned coal and/or ironOre slurry is the state of deposit.
7. method of modifying as claimed in claim 1 or 2, is characterized in that, at above-mentioned coal and/orIn iron ore slurry, add after above-mentioned water-soluble high-molecular compound every 1m3Slurry mixes 0.5～60Minute.
8. method of modifying as claimed in claim 1 or 2, is characterized in that, on adding and mixingState after water-soluble high-molecular compound, carry out the maintenance of certain hour.
9. method of modifying as claimed in claim 8, is characterized in that, to coal and/or iron ore slurryMaterial carries out granulating.
10. method of modifying as claimed in claim 9, is characterized in that, coal and/or iron ore slurryMaterial carries out granulating as iron-smelting raw material.
The manufacture method of 11. modified feedstocks, is characterized in that, in coal and/or iron ore slurry, and phaseFor described coal and/or iron ore slurry 1m3Add and mix w/o type emulsion form, select free propyleneThe part of acid homopolymers, methacrylamide homopolymer, acrylic acid/acrylamide copolymer, polyacrylamideHydrolysate, acrylic acid/acrylamide/2-acrylamide-2-methylpro panesulfonic acid copolymer, acrylic acid/The water-soluble high-molecular compound of one or more in the group of maleic acid composition0.1～15kg。
12. manufacture methods as claimed in claim 11, is characterized in that, above-mentioned water soluble polymerCompound is anionic property w/o type emulsion polymer.
13. manufacture methods as described in claim 11 or 12, is characterized in that, are adding and are mixingClose and state after water-soluble high-molecular compound, further add inorganic metal salt.
14. manufacture methods as claimed in claim 13, is characterized in that, above-mentioned inorganic metal salt isAluminium salt.
15. manufacture methods as described in claim 11 or 12, is characterized in that, above-mentioned coal and/orThe moisture content of iron ore slurry is 10～80 quality %.
16. manufacture methods as described in claim 11 or 12, is characterized in that, above-mentioned coal and/orIron ore slurry is the state of deposit.
17. manufacture methods as described in claim 11 or 12, is characterized in that, above-mentioned coal and/Or in iron ore slurry, add after above-mentioned water-soluble high-molecular compound every 1m3Slurry mixes 0.5～60Minute.
18. manufacture methods as described in claim 11 or 12, is characterized in that, are adding and are mixingClose and state after water-soluble high-molecular compound, carry out the maintenance of certain hour.
19. manufacture methods as claimed in claim 18, is characterized in that, to coal and/or iron oreSlurry carries out granulating.
20. manufacture methods as claimed in claim 19, is characterized in that, by coal and/or iron oreSlurry carries out granulating as iron-smelting raw material.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
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| JP2011066894 | 2011-03-25 | ||
| JP2011-066894 | 2011-03-25 | ||
| JP2011178001A JP5927807B2 (en) | 2011-03-25 | 2011-08-16 | Method for modifying coal and / or iron ore slurry |
| JP2011-178001 | 2011-08-16 | ||
| PCT/JP2012/051486 WO2012132521A1 (en) | 2011-03-25 | 2012-01-25 | Method for modifying slurry of coal and/or iron ore |
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| CN103392015B true CN103392015B (en) | 2016-05-04 |
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| KR (1) | KR101869330B1 (en) |
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| FR3005063B1 (en) * | 2013-04-26 | 2015-04-24 | Snf Sas | PROCESS FOR LOADING IRON ORE IN BULK TREATED PARTIALLY BY SUPERABSORBENTS |
| US11008228B1 (en) * | 2017-06-05 | 2021-05-18 | Kinetix Performance Solutions, LLC | Method of preparing potable water |
| JP7212506B2 (en) * | 2017-12-07 | 2023-01-25 | 日鉄環境株式会社 | Method for treating oil-containing sludge and method for treating wastewater |
| JP7299027B2 (en) * | 2018-09-05 | 2023-06-27 | 日鉄環境株式会社 | Method of piling up raw materials for ironmaking |
| JP6969629B2 (en) * | 2020-04-09 | 2021-11-24 | 栗田工業株式会社 | Remodeling method of mineral raw materials |
| BR112022026010A2 (en) * | 2020-06-25 | 2023-01-17 | Nippon Catalytic Chem Ind | AGENT TO REDUCE DUST DISPERSION, BINDING AGENT FOR STORAGE OF STACKED MATERIALS IN AN OPEN STORAGE AREA, STORAGE OF MATERIALS AND METHOD FOR PRODUCING A STORAGE OF MATERIALS |
| KR102631581B1 (en) * | 2021-11-04 | 2024-02-02 | 주식회사 쓰리아이씨 | The additive for improving coal fluidity |
| JPWO2024004298A1 (en) * | 2022-06-30 | 2024-01-04 |
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| CN101448583A (en) * | 2006-05-19 | 2009-06-03 | 西巴控股有限公司 | Treatment of aqueous suspensions |
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| JPS57192493A (en) * | 1981-05-22 | 1982-11-26 | Kao Corp | Granulation of aqueous slurry of coal powder |
| JPH05317899A (en) * | 1992-05-26 | 1993-12-03 | Hitachi Kiden Kogyo Ltd | Treatment of sludge |
| JPH07308700A (en) * | 1994-05-19 | 1995-11-28 | Nippon Kayaku Co Ltd | Flocculant and method for dehydrating sludge |
| BR9508580A (en) * | 1994-08-12 | 1997-12-23 | Cytec Tech Corp | Process for stabilizing and for stacking an aqueous suspension and composition having stabilized flow characteristics |
| JPH08196820A (en) | 1995-01-25 | 1996-08-06 | Nippon Steel Corp | Dehydration of source slurry containing fine powder |
| KR19980047617U (en) * | 1996-12-28 | 1998-09-25 | 김영환 | Insert structure of the phone |
| JPH11169900A (en) * | 1997-12-10 | 1999-06-29 | Taiyo Koko Co Ltd | Treatment of hydrated cake |
| MXPA02011398A (en) * | 2000-05-31 | 2003-04-25 | Ciba Spec Chem Water Treat Ltd | Treatment of mineral materials. |
| JP4204798B2 (en) * | 2002-04-04 | 2009-01-07 | 新日本製鐵株式会社 | Method for granulating raw materials for iron making |
| GB0310419D0 (en) * | 2003-05-07 | 2003-06-11 | Ciba Spec Chem Water Treat Ltd | Treatment of aqueous suspensions |
| JP2006212569A (en) * | 2005-02-04 | 2006-08-17 | Nippon Steel Corp | Slurry concentrating method |
| JP4816374B2 (en) * | 2006-09-28 | 2011-11-16 | 栗田工業株式会社 | Coagulation method of high water content sludge |
| JP2010227745A (en) * | 2009-03-26 | 2010-10-14 | Nippon Paper Industries Co Ltd | Method of dehydrating incineration ash |
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| JP2012214292A (en) | 2012-11-08 |
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