Summary of the invention
The objective of the invention is to seek industrial residue and replace industrial raw material in the original exciting agent, reduce production costs.To solve two problems: composition and the production method of determining this flyash excitant for this reason.In order to adapt to different purposes,, develop three kinds of flyash excitants based on same design.Technical scheme of the present invention is as follows:
Scheme 1
A kind ofly be used for non-reinforced concrete, its volume is the flyash excitant of the 2-4% of cement and flyash gross weight, it comprises following component and content (weight percent):
Component concentration
Salt slurry 25-----40%
Lime mud 10-----20%
Aluminium sulfate slag 10-----20%
Sodium-chlor 5------15%
Phosphogypsum 10-----30%
In order to improve the serviceability of concrete mix, improve concrete intensity, reduce contraction ratio, increase following component and content (weight percent) on the basis of such scheme:
Component concentration
High efficiency water reducing agent 5------15%
Calcium lignin sulphonate 1-------6%
Compound for the ease of said components, and improve homogeneity after compound can increase flyash or zeolite powder respectively as solid support material on the basis of above-mentioned two schemes, its volume is 100 to deduct each component sum.
Scheme 2:
A kind ofly be used for Steel Concrete, its volume is the flyash excitant of the 2-4% of cement and flyash gross weight, it comprises following component and content (weight percent):
Component concentration
Salt slurry 20-----40%
Lime mud 10-----20%
Aluminium sulfate slag 10-----20%
Sodium-chlor 6------10%
Phosphogypsum 15------25%
Calcium nitrite 6-------10%
Increasing the purpose of calcium nitrite in this scheme, is to utilize its resistance rust effect, prevents the steel bar corrosion harm that chlorion may cause in wet environment, improves concrete weather resistance.
In order to improve the serviceability of concrete mix, improve concrete intensity, reduce contraction ratio, can increase following component and content (weight percent) on the basis of such scheme:
Component concentration
High efficiency water reducing agent 6------15%
Calcium lignin sulphonate 1-------5%
Compound for the ease of said components, and improve homogeneity after compound can increase flyash or zeolite powder respectively as solid support material on the basis of above-mentioned two schemes, its volume is 100 to deduct each component sum.
High efficiency water reducing agent in above-mentioned each scheme comprises products such as UNF---5 or FDN.
The scheme 2 described exciting agents that are used for Steel Concrete also can be used for non-reinforced concrete, and technique effect is better, and only cost is slightly high.
Scheme 3
A kind of flyash excitant that is used for manufacture of cement, it comprises following component and content:
Component concentration
Salt slurry 25-----40%
Lime mud 10-----20%
Aluminium sulfate slag 10-----20%
Trolamine 0.75-1.5%
Phosphogypsum 10------30%
This flyash excitant is to remove sodium-chlor on scheme 1 basis, and the increase trolamine constitutes.It can guarantee that the cement of producing has early epistasis and late-enhancement, and improves its grinding aid, and saves energy improves mill output.
Compound for the ease of said components, and improve homogeneity after compound can increase flyash or zeolite powder as solid support material on the basis of such scheme, its volume is 100 to deduct each component sum.
Salt slurry in the such scheme is a waste residue of producing the chlor-alkali discharging, and aluminium sulfate slag is a waste residue of producing the Tai-Ace S 150 discharging, and lime mud is a waste residue of producing the lime discharging, and phosphogypsum is to produce tertiary sodium phosphate to discharge waste residue.Their basic chemical constitution (weight percent) is as follows:
Salt slurry:
NaCl 8-20% CaCO
3 20-35% Mg(OH)
2 5-15%
BaSO
410-30% moisture 25-40%
Aluminium sulfate slag:
Al
2O
3 18-25% SiO
2 30-35% SO
3 20-30%
CaO 2-5% Fe
2O
31-3% MgO a little
SO3 content (weight percent) 38-45% in the phosphogypsum.
CaO content (weight percent) 10-30% in the lime mud.
This flyash excitant is that main raw material is composited with the industrial residue, it can excite the lateral reactivity of flyash effectively, increase the incorporation of flyash in concrete and cement, under the prerequisite that guarantees outstanding technique effect, reduce product cost to greatest extent, increase economic efficiency, social benefit and environmental benefit.
A kind of method of producing the described flyash excitant of above-mentioned each scheme, its special character is earlier salt slurry, aluminium sulfate slag and phosphogypsum to be carried out drying treatment, then according to the described component proportion speed of each scheme raw materials weighing, and with its input have mix in the pulverizer that stirs and pulverize function pulverize, stirring, homogenizing and grinding form.Be used for concrete exciting agent, its fineness should be controlled at can be all by the 0.63mm sieve, and the 0.315mm screen over-size is not more than 12%, and is applied to the situation of manufacture of cement, its fineness is not limit by this.
Drying means to salt slurry, aluminium sulfate slag and phosphogypsum can be airing, also can Tumble Dry.But, because the salt slurry water ratio is higher, artificial airing is difficult for dry, Tumble Dry, when temperature was too high, chemical transformation can take place in some component, was unfavorable for the performance of its performance, so adopt following method: earlier with salt slurry and lime mud mix, sloughing after wherein the most of moisture again with the calcium oxide in the lime mud, row dries.
The performance index that are used for the exciting agent of flyash concrete and goods thereof are controlled by table 1.
Table 1 is mixed the concrete performance index of this flyash excitant
Test subject | Flyash excitant |
The Sy--------1 type | The SY------2 type |
Flyash replaces cement rate 30% | Flyash replaces cement rate 40% |
Compressive strength rate % is not less than | 7d | 75 | 75 |
28d | 100 | 100 |
56d | 105 | 105 |
Shrinkage ratio % is not more than | 28d | 110 | 110 |
Annotate: the volume of exciting agent, SY------1 type are 3% of cement and flyash gross weight, and the SY-------2 type is 4%.
This exciting agent is used for flyash concrete, and the measured result of its mechanical property (compressive strength rate) sees Table 2.
Table 2 is mixed the mechanical performance of concrete measured result of this exciting agent
(according to 5.6.1 test among the standard GB8076----1997)
Numbering | Ultimate compression strength, the Mpa/ relative percentage |
7d | 28d | 56d |
K
0(100% cement)
| 19.2/100 | 28.9/100 | 34.1/100 |
K---F (70% cement+30% flyash) | 12.1/63 | 19.2/66.4 | 23.0/67.4 |
K----F----S---1 | 16.6/86.2 | 29.5/102.1 | 37.0/108.5 |
K----F----S---2 | 21.5/112.0 | 35.2/121.8 | 38.9/114.1 |
Annotate: K----F----S----1, K----f-----s----2 are respectively to be respectively to mix 3% embodiment 1, the exciting agent shown in the embodiment 4 on the basis of K----F.
Major technique effect to this exciting agent of being used for manufacture of cement is embodied in: under the suitable situation of cement physical and mechanical property, use this exciting agent, can make mill output improve 10----20%; Under the constant substantially condition of cement raw material proportioning, use this exciting agent, can make early strength (3d or 7d) improve 5-----10Mpa, intensity improved more than the 5Mpa in 28 days; Under the suitable condition of 28 days intensity of cement, use this exciting agent can make the grog incorporation reduce more than 8%.
List the testing data that this exciting agent is used to produce 32.5 class g cements and M275 cement below respectively, see Table 3 and table 4 respectively.
Table 3 is used for the experimental result of 32.5 class g cements
Numbering | Fineness | Presetting period (h:min) | Final setting time (h:min) | Stability | Anti-folding/ultimate compression strength, Mpa |
3 days | 28 days |
0 | 7.0 | 2:15 | 4:15 | Qualified | 3.7/18.2 | 6.8/42.5 |
1 | 4.5 | 2:25 | 4:40 | Qualified | 3.5/17.8 | 6.6/43 |
2 | 5.0 | 2:20 | 3:50 | Qualified | 4.8/27.8 | 6.7/48.1 |
3 | 5.0 | 1:50 | 3:05 | Qualified | 4.9/26.0 | 6.7/47.1 |
4 | 5.0 | 2:15 | 3:50 | Qualified | 4.7/24.5 | 7.8/47 |
5 | 5.4 | 2:15 | 3:35 | Qualified | 4.7/24.7 | 7.5/47.4 |
6 | 6.0 | 2:00 | 3:20 | Qualified | 5.2/27.8 | 7.3/48.3 |
7 | 5.6 | 1:45 | 2:55 | Qualified | 4.7/26.5 | 7.7/48.0 |
Annotate: 1, No. 0 is comparative group, and 1----7 number is test group, grinds with experiment, down together.
2, cement proportion (%): grog (rotary kiln) liquid slag zeolite gypsum grinding aid
Comparative group 68 19 10 3-----
Test group 60 23 10 34
Table 4 is used to produce M275 cement experiment result
Factory is other | Numbering | Fineness | Presetting period (h:min) | Final setting time (h:min) | Stability | Anti-folding/ultimate compression strength, Mpa |
7 days | 28 days |
A factory | A---0 | 6.4 | 2:55 | 3:30 | Qualified | 5.1/29.6 | 7.1/45.9 |
A---1 | 5.7 | 2:10 | 3:10 | Qualified | 5.3/31.8 | 7.6/44.7 |
A---2 | 4.9 | 1:55 | 3:30 | Qualified | 5.2/33.6 | 7.5/47.0 |
A---3 | 4.4 | 3:40 | 5:00 | Qualified | 5.1/35.0 | 7.3/46.1 |
B factory | B---0 | 5.6 | 2:40 | 4:05 | Qualified | 5.4/32.7 | 6.5/48.6 |
B---1 | 4.2 | 2:25 | 3:30 | Qualified | 5.4/33.5 | 6.5/50.5 |
C factory | C---0 | 5.7 | 3:10 | 4:35 | Qualified | 3.7/13.3 | 5.9/29.7 |
C---1 | 5.3 | 2:50 | 4:00 | Qualified | 4.1/21.8 | 6.5/32.9 |
C---2 | 4.6 | 2:35 | 3:50 | Qualified | 3.2/15.8 | 5.9/29.6 |
Annotate: 1, be numbered 0 be comparative group, all the other are test group.
2, the grog in the cement proportion, A factory test group grog reduces 8%, and B factory, C factory all reduce 10%.
What 3, test method was carried out is the regulation of GB/T3183-----1997 standard.
The present invention has following advantage: this exciting agent can excite the lateral reactivity of flyash effectively, increase the volume of flyash in concrete (containing goods) or cement, and can improve early stage (1d, 3d, 7d) intensity of concrete and cement, 28 days intensity increases the longterm strength sustainable growth with comparing of fly ash not.Because the increase of doping quantity of fly ash for concrete and production of articles thereof, can be saved cement; For manufacture of cement, can save grog, thereby can reduce the cost of concrete (containing goods) and cement.Because this exciting agent uses the salt slurry of significant proportion, the aluminium slag, phosphogypsum, industrial residues such as lime mud, so cost is low than like product, and in producing again with high efficiency water reducing agent, the ordinary water-reducing agent science is compound, the more existing again exciting agent height of its performance.Through budgetary estimate, for concrete and production of articles thereof, 1 ton of this exciting agent of every application, can fully utilize about 10 tons in flyash, can save about 10 tons of cement, economize on the use of funds more than 1000 yuan, being used for manufacture of cement, use this exciting agent, 1 ton of cement of every production, the 5----10 unit that can reduce cost produces 100000 tons of small cement plants per year to one, can increase by ten thousand yuan of benefit 50-----100 every year, Shang Keyin saves a large amount of grogs and increases production cement.In a word, produce and use this exciting agent, its economic benefit, social benefit and environmental benefit are all very outstanding.