CN103796968A - Lime slurry and clinker production method using same - Google Patents
Lime slurry and clinker production method using same Download PDFInfo
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- CN103796968A CN103796968A CN201280044419.6A CN201280044419A CN103796968A CN 103796968 A CN103796968 A CN 103796968A CN 201280044419 A CN201280044419 A CN 201280044419A CN 103796968 A CN103796968 A CN 103796968A
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- lime
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- gypsum
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
- C04B7/323—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
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Abstract
Provided is a lime slurry able to produce clinker with a minimal burden on the global environment, suppress the generation of an orifice-shaped coating within a kiln during clinker firing, and suppress pipe blockage during pumping. A lime slurry containing slaked lime with an average particle size of at least 4 [mu]m, gypsum, alumina, water and a water-reducing agent, the lime slurry having a hydrotalcite content of less than 0.5% by mass, and a flow value of at least 200 mm. Alternatively, a lime slurry containing slaked lime with an average particle size of at least 4 [mu]m, gypsum, alumina, water and a polycarboxylic-acid-based water-reducing agent, the lime slurry having a hydrotalcite content of at least 0.5% by mass, and a flow value of at least 200 mm.
Description
Technical field
The present invention relates to a kind of mud that contains lime composition.In addition, the invention still further relates to the method for manufacturing grog take this mud as raw material.
Background technology
Calcium sulphoaluminate (3CaO3Al
2o
3caSO
4, hereinafter referred to as " CSA ".) due to by being mixed in cement and thering is expansion character as swelling property mixing material, be therefore used as preventing chemical pre-stressed material (No. 2007/029399th, the International Publication of concrete importing such as concrete crackle, Hume's pipe; Patent documentation 1).
In the manufacture method of CSA, owing to requiring raw material to admix precision, therefore adopt following wet type process for calcining: the wet type slurry basin (slurry basin) being made up of lime composition (Wingdale, unslaked lime, slaked lime, acetylene produce chip etc.), gypsum (chemical gypsum, the plaster of paris etc.), alumina raw material (bauxite, the residual ash of aluminium etc.) and water is reached to CaO/Al with molar ratio computing
2o
3=1～5 or 2～6, CaSO
4/ Al
2o
3=2～4 mode is admixed, and slurry basin is fed in kiln, manufactures CSA grog.As the patent documentation of the manufacture method about these CSA grogs, can enumerate Japanese Patent Publication 42-21840 communique (patent documentation 2), Japanese Patent Publication 47-840 communique (patent documentation 3), Japanese Patent Publication 51-22013 communique (patent documentation 4), No. 2672008 communique of Japanese Patent (patent documentation 5).
Prior art document
Patent documentation
Patent documentation 1: No. 2007/029399th, International Publication
Patent documentation 2: Japanese Patent Publication 42-21840 communique
Patent documentation 3: Japanese Patent Publication 47-840 communique
Patent documentation 4: Japanese Patent Publication 51-22013 communique
Patent documentation 5: No. 2672008 communique of Japanese Patent
Summary of the invention
Invent problem to be solved
In the past, the general Wingdale that uses is as the lime composition of raw material that becomes CSA, if but use Wingdale as raw material, CSA grog is burnt till with firing furnaces such as rotary kilns, need decarboxylation energy (Decarbonation energy), therefore burn till fuel rate variance, in addition, also can produce in large quantities CO
2so, there is the large such problem of the burden that global environment is caused.In addition, owing to little by little causing pressure disturbance, combustion air quantity not sufficient in kiln, have to suppress raw material supplying amount, and present incomplete combustion, therefore occurred the following state of affairs: in the stage that produces CO gas, for fear of blast, must stop the running of kiln.Its reason is, grows at leisure poroid coating at kiln inwall, dwindled the sectional area in kiln.From experience, also nonrandom at the position of firing furnace undercoat growth, but grow at privileged site.
On the other hand, slaked lime, compared with Wingdale, as in raw-material situation, does not need decarboxylation energy in the stage of burning till, and therefore not only can reduce and burn till fuel rate, and can reduce CO
2generation is effective for reducing to the burden of global environment.In addition, due to decarboxylic reaction not occurring, therefore can also suppress the generation of coating.But when the wet type slurry basin to containing slaked lime carries out when mixing, gelation will occur wet type slurry basin, viscosity raises, and therefore can cause that pump stops up and the load of slurry mixer is excessive, and existence cannot be carried out pipe arrangement and carry such problem.
Particularly, due to from carbide of calcium manufacture with the dust producing electric furnace take slaked lime as main body, if therefore used as the raw material of mud, the lime raw material that just can be used as replace lime stone uses, and can reduce CO
2generation, it uses effectiveness large, but because this dust has thixotropy, therefore in the slurry manufacture stage, can produce the fault of slurry mixer, or in delivery phase, produces the fault of the transfer rollers such as pump, so its a large amount of use is obstructed.
In addition, it is also conceivable that the method using unslaked lime as mud raw material, but consider to be difficult to use from the viewpoint of cost, secure context.
The present invention In view of the foregoing creates.That is, one of problem of the present invention is, a kind of lime white is provided, and it can manufacture grog under the less burden that global environment is caused, and can suppress the generation of the poroid coating in kiln in the time burning till grog, and pipe arrangement can suppress pump delivery time stops up.In addition, another problem of the present invention is, the method for manufacturing grog take lime white of the present invention as raw material is provided.
For the scheme of dealing with problems
The inventor conducts in-depth research in order to address the above problem repeatedly, found that, and by using slaked lime as raw material, the CO can suppress to burn till time
2and the generation of coating, and by adding the raw material of water reducer as mud, can prevent gelation, the obstruction of pipe arrangement when slurry transportation can also be reduced.The present invention is found to be basis with this and completes, and determines by following content.
The present invention, in first aspect, is a kind of lime white, and it contains median size is slaked lime, gypsum, aluminum oxide, water and water reducers more than 4 μ m, and the content of hydrotalcite is less than 0.5 quality %, and flow valuve is more than 200mm.
In an embodiment of the lime white of a first aspect of the present invention, water reducer be select in the group of free Lignins, melamine system, polycarboxylic acid series and naphthalene system composition more than a kind.
In another embodiment of the lime white of a first aspect of the present invention, meet any one following above condition.
(a) more than poly carboxylic acid series water reducer accounts for 0.20 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide,
(b) more than naphthalene water reducer accounts for 0.28 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide,
(c) more than Lignins water reducer accounts for 1.00 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide,
(d) more than melamine based water reducer accounts for 1.00 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide.
In another embodiment again of the lime white of a first aspect of the present invention, contain the secondary slaked lime generating while producing acetylene by carbide of calcium.
The present invention, in second aspect, is a kind of lime white, and it contains median size is slaked lime, gypsum, aluminum oxide, water, poly carboxylic acid series water reducers more than 4 μ m, and the content of hydrotalcite is more than 0.5 quality %, and flow valuve is more than 200mm.
In an embodiment of the lime white of a second aspect of the present invention, contain dust, this dust is to catch in the wet type control of dust operation of carbide of calcium electric furnace, comprises slaked lime and hydrotalcite and has thixotropy.
In another embodiment again of the lime white of a second aspect of the present invention, more than poly carboxylic acid series water reducer accounts for 1.00 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide.
Of the present invention first or another embodiment again of the lime white of second aspect in, the content of the water in lime white is 8～25 quality %, gypsum is with respect to the mol ratio (CaSO of aluminum oxide
4/ Al
2o
3) be 2～10, slaked lime is with respect to the mol ratio (Ca(OH) of aluminum oxide
2/ Al
2o
3) be 2～30.
Of the present invention first or another embodiment again of the lime white of second aspect in, lime white is the manufacture raw material of grog.
Of the present invention again aspect another in, be a kind of manufacture method of grog, it comprises the lime white of above-mentioned record is carried out to the operation of being burnt till after pipe arrangement conveying.
In an embodiment of the manufacture method of grog of the present invention, grog is calcium sulphoaluminate CSA(Calcium Sulfoaluminate).
The effect of invention
By manufacture grog take lime white of the present invention as raw material, can suppress CO
2produce, manufacture grog with little energy, the burden that therefore can reduce global environment to cause.In addition, if take lime white of the present invention as raw material, can in the time burning till grog, suppress the generation of the poroid coating in kiln.In addition, lime white of the present invention is by suppressing gelation and viscosity can being guaranteed for adequate value, and the pipe arrangement therefore can suppress pump delivery time stops up, in addition, to slurry basin stirring rake (ベ ー ズ ン レ ー キ) load that applies also can be less.So industrial utility value of the present invention is very big.
Accompanying drawing explanation
Fig. 1 be the mobile cone reversion while representing to measure flow valuve and beat after the schematic diagram of appearance of sample.
Fig. 2 is the schematic diagram that represents an embodiment of CSA manufacturing system of the present invention.
Embodiment
Lime white of the present invention contains water, slaked lime, gypsum, aluminum oxide and water reducer.This lime white can be as the manufacture raw material of grog.So-called grog, the material obtaining as follows: the crushed material of the mineral that contain one or more is burnt till to a part of melting (partly melting state) to its composition, entirety is fired as block and obtained, be not particularly limited for its kind, but exemplarily, can enumerate calcium sulphoaluminate CSA(Calcium Sulfoaluminate) and the grog such as cement.Calcium sulphoaluminate is to have CaO, CaSO as chemical constitution in typical situation
4, and Al
2o
3, contain CaO, CaSO as essential mineral
4, 3CaO3Al
2o
3caSO
4the resultant of reaction matter of (being known as Yeelimite or Hauyne, is the chemical substance being defined by CAS No.12005-25-3).
As water used in the present invention, underground water, tap water, rainwater etc. can utilize.These water hardness etc. do not limit, and can utilize.Water plays the effect of giving mobility.For the content of the water in lime white, consider suitably to adjust from this point, if but very few, pump delivery will become difficulty, and on the other hand, if too much, will be separated with other compositions.So the content of the preferred water in lime white is 8～25 quality %, more preferably 10～20 quality %.
Lime composition used in the present invention adopts slaked lime.Owing to Wingdale will being burnt to the energy of achievement need for decarboxylic reaction, on energy, be therefore disadvantageous.In addition, in the time that Wingdale is burnt till, stopping up in stove because the reason of decarboxylic reaction generates poroid coating, is also disadvantageous in this.If use slaked lime, can eliminate this kind of inconvenience.As slaked lime, be not particularly limited, but contained by-product slaked lime etc. in for example can enumerating chemically utilizing the micro mist slaked lime of settling process manufacture, by the dust of catching in micro mist slaked lime being pulverized to the slaked lime, wet type control of dust operation at carbide of calcium electric furnace of dioxin absorption micro mist slaked lime, secondary generation in the manufacturing process of the acetylene gas by calcium carbide route of the incinerator obtaining.
Particularly, the dust of catching in the wet type control of dust operation of carbide of calcium electric furnace contains hydrotalcite (typically being 1～10 quality %, is more typically 2～8 quality %), will have like this thixotropy, therefore pipe arrangement difficulty of transportation.Thus, do not utilize purposes, generally go out of use, but can be used as the raw material recycling of lime white by the present invention., the present invention also can contribute to reduce the amount of waste.
In order to obtain fully the raising effect by the mobility of water reducer, the median size of slaked lime need to be more than 4 μ m, more than being preferably 5 μ m.Be less than 4 μ m in the median size of slaked lime, little by the raising effect of the mobility of water reducer, therefore easily there is the gelation of mud, viscosity raises, and the conveying of mud becomes difficulty.On the other hand, if the median size of slaked lime exceedes 100 μ m, easily cause and burn till badly etc. in the material separation, kiln of slurry basin, likely make running become difficulty.Thus, the median size of slaked lime is preferably made as below 80 μ m, more preferably below 60 μ m, more preferably below 50 μ m.By using these slaked limes, significantly reduce the unit power consumption in the operation of in the past wet type slurry being made up of Wingdale, gypsum, alumina raw material and water being utilized to wet mill pulverizing.
In the present invention, what median size adopted is 50% diameter that utilizes the cumulative percentage rate of the volume reference of " the particle size distribution measuring method of the laser diffraction/scattering method based on JIS R1629 fine ceramics raw material " mensuration.
The content of the slaked lime in lime white is as long as suitably adjust according to the kind of the grog of manufacturing, but for example in the situation that of manufacture CSA, can be according to making Ca(OH with molar ratio computing)
2/ Al
2o
3=2～30, be preferably Ca(OH)
2/ Al
2o
3=2～25 mode coordinates.
As gypsum used in the present invention, dihydrate gypsum, semi-hydrated gypsum, dehydrated gyp-etc. can utilize, for example, as dihydrate gypsum, can utilize the stack desulfurization dihydrate gypsum producing in natural dihydrate gypsum, heat power station, the waste gypsum plate as industrial waste deposits yields, the semi-hydrated gypsum that is known as calcined gypsum, phosphoric acid by-product dehydrated gyp-, natural dehydrated gyp-etc.Granularity does not limit, and piece, crushed material etc. can utilize.
The content of the gypsum in lime white is as long as suitably adjust according to the kind of the grog of manufacturing, but for example in the situation that of manufacture CSA, can be according to making CaSO with molar ratio computing
4/ Al
2o
3=2～10 mode coordinates.
As aluminum oxide used in the present invention, natural aluminous shale, the residual ash of aluminium, Calcined polishing aluminum oxide that produce as aluminium slag, can utilize as the aluminum oxide mud of industrial waste deposits yields etc.Granularity does not limit, and piece, crushed material etc. can utilize.
In the present invention, water reducer plays the effect of the gelation that prevents lime white, makes reduced viscosity and improves mobility.Like this, in the time lime white being carried out to pipe arrangement conveying, just can prevent that pipe arrangement from stopping up.The amount of adding the water reducer in lime white to is not particularly limited, if but addition is excessive, effect is saturated and uneconomical, if instead addition is too small, cannot obtain sufficient effect, therefore need to manage rightly the amount of water reducer with respect to the total amount of the slaked lime in lime white, aluminum oxide, gypsum and water reducer.This suitable amount as described later, changes according to the kind of water reducer, in addition, also whether demonstrates thixotropy according to lime white and changes, and therefore requires to make wise selection.
As water reducer used in the present invention, can use Lignins (typically being sulfonated lignin system), melamine system (typically being melamine sulfonates system), polycarboxylic acid series (typically being polycarboxylic acid series macromolecular compound system), naphthalene system (typically being naphthene sulfonic acid system).In the middle of them, because mobility raising effect is large, therefore preferably polycarboxylic acid series and naphthalene are, most preferably polycarboxylic acid series.Exemplarily, as Lignins water reducer, can enumerate " the Darex F-1 take sulfonated lignin as main body, WRDA " (Grace Chemicals Co., Ltd.), " Pozzolith No.70 series " (BASF Pozzolith Co., Ltd.), as melamine based water reducer, can enumerate " FT-700N series " (the Grace Chemicals Co., Ltd.) take the salt of melamine sulfonic formaldehyde condensation compound as main body, as poly carboxylic acid series water reducer, can enumerate " the Darex Super100 of polycarboxylic acid series macromolecular compound, 200, 300, 1000N " series (Grace Chemicals Co., Ltd.), as naphthalene water reducer, can enumerate " FT-500V series " (Grace Chemicals Co., Ltd.) take alkyl naphthalene sulfonic acid formalin condenses as main body etc.In addition, can also enumerate as Lignins and naphthalene is " FT-80 " (Grace Chemicals Co., Ltd.) of mixture etc.
The amount of the water reducer that should add has greatly difference because of the content of the hydrotalcite in lime white.Be less than 0.5 quality % at the content of hydrotalcite, be preferably be less than 0.1 quality %, more preferably when 0 quality %, kind for operable water reducer is not particularly limited, as long as suitably adjust addition so that flow valuve described later is more than 200mm mode.But, even if it should be noted that additive effect also can be saturated too much.
The addition of the water reducer in this situation for example preferably meets any one following above condition.
(a) poly carboxylic acid series water reducer lower value with respect to the total quality of slaked lime, gypsum and aluminum oxide is more than 0.20 quality %, more than being preferably 0.25 quality %, higher limit is below 10.00 quality %, is preferably below 5.00 quality %, more preferably below 1.00 quality %.
(b) naphthalene water reducer lower value with respect to the total quality of slaked lime, gypsum and aluminum oxide is more than 0.28 quality %, more than being preferably 0.50 quality, higher limit is below 10.00 quality %, is preferably below 5.00 quality %, more preferably below 1 quality.
(c) Lignins water reducer lower value with respect to the total quality of slaked lime, gypsum and aluminum oxide is more than 1.00 quality %, more than being preferably 2.00 quality %, higher limit is below 10.00 quality %, is preferably below 5.00 quality %, more preferably below 3.00 quality %.
(d) melamine based water reducer is more than 1.00 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide, more than being preferably 2.00 quality %, higher limit is below 10.00 quality %, is preferably below 5.00 quality %, more preferably below 3.00 quality %.
The content of the hydrotalcite in lime white is more than 0.5 quality %, typically be 1～8 quality %, while being more typically 2～5 quality %, the kind of operable water reducer is restricted.Specifically, owing to can't see practical effective effect except poly carboxylic acid series water reducer, therefore need to use poly carboxylic acid series water reducer.The addition of the water reducer in this situation lower value with respect to the total quality of slaked lime, gypsum and aluminum oxide is more than 1.00 quality %, more than being preferably 2.00 quality, higher limit is below 10.00 quality %, is preferably below 5.00 quality, more preferably below 3.00 quality %.
Lime white of the present invention can by by above-mentioned composition with mixing manufactures such as ball mills.In an embodiment of the lime white of the present invention so obtaining, it is more than 200mm can making flow valuve, in a preferred embodiment, more than can being made as 250mm, in typical embodiment, is 200～300mm.Flow valuve is the index of the mobility of mud, and this value is higher represents that mobility is more excellent.Can be by increasing the addition of the water reducer flow valuve that raises.Therefore, as long as till the addition of water reducer is increased to flow valuve and is increased to desired value.But the difference that necessary addition basis becomes the median size of the slaked lime of the raw material of lime white changes, the median size of slaked lime is larger, and the raising effect of mobility is higher.
In the present invention, the physical test method (flow test) of the measuring method of flow valuve based on JIS R5201 cement.It should be noted that, in the time that powder shaped is shown, flowing after cone reversion, beat the appearance that is presented Fig. 1 by test plastomer after 15 times (1 time/1 second), powder also demonstrates the broadening of W1 except W2, W3.In the time of powder shaped, demonstrate with respect to the W1 value after the beaing for 15 seconds 15 times of the W1 value in when reversion cone of flowing the value that is greater than 1.5, more preferably demonstrate the value that is greater than 2.0.
The lime white of gained can utilize transferpump to carry out pipe arrangement conveying, for example, can carry to grog firing furnace.Lime white of the present invention, because gelation is inhibited, is also difficult to produce the rising of viscosity, therefore can carry out pipe arrangement conveying.As firing furnace, although not determinate, generally adopt rotary kiln.The condition of firing furnace is as long as suitably regulate according to the kind of grog, but for example in the situation that CSA is burnt till, at the temperature of 1100～1300 ℃ of left and right, burns till.As previously mentioned, lime white of the present invention, owing to not needing decarboxylation energy in the stage of burning till, therefore not only can reduce and burn till fuel rate, can also reduce CO
2generation is effective for the burden that reduces global environment to cause.In addition, due to decarboxylic reaction not occurring, therefore can also suppress the generation of coating.
In Fig. 2, an example of the schematically illustrated grog manufacturing system of having utilized lime white of the present invention.Water, slaked lime, gypsum, aluminum oxide and water reducer as the raw material of lime white are supplied with to wet type raw material grinding machine 6 by pipe arrangement by feed feeder 1, slaked lime feeder 2, gypsum feeder 3, feeds of alumina device 4 and water reducer feeder 5 respectively.Each raw material is mixing and become after lime white fully in wet type raw material grinding machine 6, utilize slurry transportation pump 7, by pipe arrangement, temporary storage is in the surge tank 8 with stirrer, thereafter, utilize slurry transportation pump 9 to drop into firing furnace 10 by pipe arrangement, manufacture grog.
Embodiment
Below, embodiments of the invention are described, but they are illustrative object, and are not intended to limit the present invention.
< 1. raw material >
The raw material of the lime white using in example and comparative example is shown below.
(1) lime composition
Lime 1: be the dust of catching in the wet type control of dust operation of carbide of calcium electric furnace.
Lime 2: be the by-product slaked lime producing in the manufacturing process of the acetylene gas by calcium carbide route.
Lime 3: be lime 2 to be pulverized and the material that obtains.
Lime 4: the slaked lime (" Hishikaru " Ling Guang lime Industrial Co., Ltd) that is commercially available product.
Lime 5: the Wingdale that is the Qinghai plant produced of Deuki Kagaku Kogyo Co., Ltd.
The composition of these lime compositions and median size shown in table 1.
[table 1]
* Igloss is burning decrement; Burning decrement test method (the geotechnical engineering association benchmark) JGS0221 of soil; 2009
* Insol is insoluble residual component
(2) gypsum
In all examples and comparative example, use in thering is following table 2 gypsum of getting rid of of the composition recorded.This gets rid of gypsum is to utilize flue gas desulfurization equipment to reclaim SO from the smoke evacuation from heat power station
2gas, and in addition gypsification obtain.
[table 2]
(3) aluminum oxide
In all examples and comparative example, use Al
2o
3account for the residual ash of aluminium of 90 quality %.
(4) water
In all examples and comparative example, water has used common process water.
(5) water reducer
" FT-500V " (Grace Chemicals Co., Ltd.): alkyl naphthalene sulfonic acid formalin condenses is (hereinafter referred to as " β-NS ".）
" Darex Super1000N " (Grace Chemicals Co., Ltd.): polycarboxylic acid series macromolecular compound is (hereinafter referred to as " Super1000 ".）
" FT-80 " (Grace Chemicals Co., Ltd.): the 1:1(mass ratio of sulfonated lignin and alkyl naphthalene sulfonic acid formalin condenses) mixture (Grace Chemicals Co., Ltd.) (hereinafter referred to as " FT-80 ".）
" FT-700N " (Grace Chemicals Co., Ltd.): the salt of melamine sulfonic formaldehyde condensation compound is (hereinafter referred to as " FT-700N ".）
" Darex WRDA " (Grace Chemicals Co., Ltd.): sulfonated lignin are (hereinafter referred to as " WRDA ".）
The testing of characteristic > of < 2. lime whites
Above-mentioned each raw material is supplied with and mixing in wet type raw material ball grinding machine from feeder by every kind of raw material with each proportioning of recording in table 3, obtained the lime white of example and comparative example.For each mud, determine after the unit power consumption of flow valuve and wet type raw material ball grinding machine, show the result in table 3.
[table 3]
Then, each mud is delivered in the surge tank with stirring rake with transferpump, re-used transferpump and carry out pipe arrangement conveying from this, drop into rotary kilns (internal diameter is as 3m, length are as 70m) take the flows of 300t/ days, carried out the firing test of CSA grog.
Having used in the No.1 of Wingdale as the raw material of lime white, from running starts, after about 3 days, kiln inner pressure raises, and in the time of 1 week left and right, becomes and can not turn round, and has therefore checked in rotary kiln, consequently, has produced poroid coating in kiln inside.
No.2～8th, the dust that has used lime 1(to catch in the wet type control of dust operation of carbide of calcium electric furnace) example.Lime 1, owing to containing significantly hydrotalcite, therefore, with regard to water reducer, only has polycarboxylic acid series Super1000 to bring into play practical mobility and improves effect.Thus, about 1 hour time, stirring rake stops.In addition, also there is obstruction in transferpump.In addition, although in table, not do not show, even the addition of increase water reducer also be can't see the raising of mobility substantially except Super 1000.
No.9～21st, has been used the by-product slaked lime producing in the manufacturing process of lime 2(by the acetylene gas of calcium carbide route) example.Known because lime 2 does not contain hydrotalcite, therefore various water reducers play a role effectively.
No.22～23rd, has been used the crushed material of lime 3(lime 2) example.Lime 3, because median size is too small, also cannot obtain practical mobility raising effect even if therefore add water reducer.Thus, about 1 hour time, stirring rake stops.In addition, also there is obstruction in transferpump.
No.24～25th, has been used the slaked lime of lime 4(commercially available product) example.Lime 4, because median size is too small, also cannot obtain practical mobility raising effect even if therefore add water reducer.Thus, about 1 hour time, stirring rake stops.In addition, also there is obstruction in transferpump.
Description of reference numerals
1 feed feeder
2 slaked lime feeders
3 gypsum feeders
4 feeds of alumina devices
5 water reducer feeders
6 wet type raw material grinding machines
7 slurry transportation pumps
8 surge tanks
9 slurry transportation pumps
10 firing furnaces
Claims (11)
1. a lime white, it contains median size is slaked lime, gypsum, aluminum oxide, water and water reducers more than 4 μ m, and the content of hydrotalcite is less than 0.5 quality %, and flow valuve is more than 200mm.
2. lime white according to claim 1, wherein, water reducer be select in the group of free Lignins, melamine system, polycarboxylic acid series and naphthalene system composition more than a kind.
3. lime white according to claim 2, it meets any one following above condition:
(a) more than poly carboxylic acid series water reducer accounts for 0.20 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide,
(b) more than naphthalene water reducer accounts for 0.28 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide,
(c) more than Lignins water reducer accounts for 1.00 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide,
(d) more than melamine based water reducer accounts for 1.00 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide.
4. according to the lime white described in any one in claim 1～3, it contains the secondary slaked lime generating in the time producing acetylene by carbide of calcium.
5. a lime white, it contains median size is slaked lime, gypsum, aluminum oxide, water, poly carboxylic acid series water reducers more than 4 μ m, and the content of hydrotalcite is more than 0.5 quality %, and flow valuve is more than 200mm.
6. lime white according to claim 5, it contains dust, and this dust is to catch in the wet type control of dust operation of carbide of calcium electric furnace, comprises slaked lime and hydrotalcite and has thixotropy.
7. according to the lime white described in claim 5 or 6, wherein, more than poly carboxylic acid series water reducer accounts for 1.00 quality % with respect to the total quality of slaked lime, gypsum and aluminum oxide.
8. according to the lime white described in any one in claim 1～7, wherein, the content of the water in lime white is 8～25 quality %, and gypsum is with respect to the mol ratio of aluminum oxide, i.e. CaSO
4/ Al
2o
3be 2～10, slaked lime is with respect to the mol ratio of aluminum oxide, i.e. Ca(OH)
2/ Al
2o
3be 2～30.
9. according to the lime white described in any one in claim 1～8, the manufacture raw material that it is grog.
10. a manufacture method for grog, it comprises the lime white described in any one in claim 1～9 is carried out to the operation of being burnt till after pipe arrangement conveying.
The manufacture method of 11. grogs according to claim 10, wherein, grog is calcium sulphoaluminate CSA.
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|---|---|---|---|
| JP2011-200970 | 2011-09-14 | ||
| JP2011200970 | 2011-09-14 | ||
| PCT/JP2012/071881 WO2013038908A1 (en) | 2011-09-14 | 2012-08-29 | Lime slurry and clinker production method using same |
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| Publication Number | Publication Date |
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| CN103796968A true CN103796968A (en) | 2014-05-14 |
| CN103796968B CN103796968B (en) | 2016-04-13 |
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| CN (1) | CN103796968B (en) |
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| CN111925181A (en) * | 2020-08-11 | 2020-11-13 | 湖州五好建材有限公司 | Environment-friendly heat-insulating material with desulfurized gypsum as main raw material |
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| JPH07206494A (en) * | 1994-01-25 | 1995-08-08 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP2672008B2 (en) * | 1989-02-22 | 1997-11-05 | 電気化学工業株式会社 | Method for producing cement expansion material |
| JPH1179816A (en) * | 1997-08-29 | 1999-03-23 | Denki Kagaku Kogyo Kk | Cement admixture for grout and cement composition |
| CN1369455A (en) * | 2002-03-22 | 2002-09-18 | 陈智丰 | Efficient calcium thioaluminate type bulking agent and its preparing process |
| CN1990413A (en) * | 2005-12-27 | 2007-07-04 | 尹小林 | Synthesis-reactivation technique for preparing inorganic coagulation material |
| CN101519282A (en) * | 2008-02-27 | 2009-09-02 | 尹小林 | Novel technology of vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3390078B2 (en) * | 1994-02-23 | 2003-03-24 | 電気化学工業株式会社 | Cement admixture and cement composition for grout |
| JP3543272B2 (en) * | 1994-04-14 | 2004-07-14 | 電気化学工業株式会社 | Concrete product and method for producing the same |
| JPH09156978A (en) * | 1995-12-11 | 1997-06-17 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JP3973331B2 (en) * | 1999-12-17 | 2007-09-12 | 電気化学工業株式会社 | Construction method of quick setting cement concrete |
| JP5500828B2 (en) * | 2009-01-08 | 2014-05-21 | 株式会社トクヤマ | Soil hardening material |
| JP2011111376A (en) * | 2009-11-30 | 2011-06-09 | Denki Kagaku Kogyo Kk | Method for producing expansion material clinker |
-
2012
- 2012-08-29 JP JP2013533601A patent/JP5941918B2/en active Active
- 2012-08-29 CN CN201280044419.6A patent/CN103796968B/en active Active
- 2012-08-29 WO PCT/JP2012/071881 patent/WO2013038908A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2672008B2 (en) * | 1989-02-22 | 1997-11-05 | 電気化学工業株式会社 | Method for producing cement expansion material |
| JPH07206494A (en) * | 1994-01-25 | 1995-08-08 | Denki Kagaku Kogyo Kk | Cement admixture and cement composition |
| JPH1179816A (en) * | 1997-08-29 | 1999-03-23 | Denki Kagaku Kogyo Kk | Cement admixture for grout and cement composition |
| CN1369455A (en) * | 2002-03-22 | 2002-09-18 | 陈智丰 | Efficient calcium thioaluminate type bulking agent and its preparing process |
| CN1990413A (en) * | 2005-12-27 | 2007-07-04 | 尹小林 | Synthesis-reactivation technique for preparing inorganic coagulation material |
| CN101519282A (en) * | 2008-02-27 | 2009-09-02 | 尹小林 | Novel technology of vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching |
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| Publication number | Publication date |
|---|---|
| JPWO2013038908A1 (en) | 2015-03-26 |
| CN103796968B (en) | 2016-04-13 |
| JP5941918B2 (en) | 2016-06-29 |
| WO2013038908A1 (en) | 2013-03-21 |
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