CN116730682A - Production process and production system of concrete added with marble Dan Jumo - Google Patents
Production process and production system of concrete added with marble Dan Jumo Download PDFInfo
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- CN116730682A CN116730682A CN202310712858.XA CN202310712858A CN116730682A CN 116730682 A CN116730682 A CN 116730682A CN 202310712858 A CN202310712858 A CN 202310712858A CN 116730682 A CN116730682 A CN 116730682A
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- 239000004579 marble Substances 0.000 title claims abstract description 137
- 239000004567 concrete Substances 0.000 title claims abstract description 94
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 58
- 239000004576 sand Substances 0.000 claims abstract description 174
- 239000000428 dust Substances 0.000 claims abstract description 84
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000002360 preparation method Methods 0.000 claims abstract description 58
- 239000000725 suspension Substances 0.000 claims abstract description 43
- 239000004568 cement Substances 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 16
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 239000002893 slag Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims description 27
- 229910019142 PO4 Inorganic materials 0.000 claims description 20
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 20
- 239000010452 phosphate Substances 0.000 claims description 20
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 20
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 239000002270 dispersing agent Substances 0.000 claims description 16
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 claims description 15
- 229940055577 oleyl alcohol Drugs 0.000 claims description 15
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 14
- BSWXAWQTMPECAK-UHFFFAOYSA-N 6,6-diethyloctyl dihydrogen phosphate Chemical compound CCC(CC)(CC)CCCCCOP(O)(O)=O BSWXAWQTMPECAK-UHFFFAOYSA-N 0.000 claims description 13
- 230000018044 dehydration Effects 0.000 claims description 11
- 238000006297 dehydration reaction Methods 0.000 claims description 11
- GTVWRXDRKAHEAD-UHFFFAOYSA-N Tris(2-ethylhexyl) phosphate Chemical compound CCCCC(CC)COP(=O)(OCC(CC)CCCC)OCC(CC)CCCC GTVWRXDRKAHEAD-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 3
- 208000005156 Dehydration Diseases 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 229920005646 polycarboxylate Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000007655 standard test method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 239000010754 BS 2869 Class F Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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
- C04B28/04—Portland cements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
- B02C13/04—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters hinged to the rotor; Hammer mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The application relates to a production process and a production system of concrete added with marble Dan Jumo, belonging to the technical field of concrete. The production process comprises the following steps: s1, mixing marble saw dust mud cakes and water to prepare marble saw dust suspension, cleaning and screening sand, recovering fine sand, mixing the marble saw dust suspension with the fine sand, and dehydrating to prepare mixed sand; s2, uniformly mixing the mixed sand with other preparation raw materials of the concrete to prepare the concrete; other preparation raw materials of the concrete comprise cement, fly ash, slag powder, broken stone, a water reducing agent and water; wherein the mixed sand is produced by a production system. By using the production process and the production system, the process is simple when the marble saw dust is used for producing concrete, the treatment cost of the marble saw dust is low, the marble saw dust is easier to mix with other preparation raw materials of the concrete, and the strength of the finally prepared concrete is improved.
Description
Technical Field
The application relates to the technical field of concrete, in particular to a production process and a production system of concrete added with marble Dan Jumo.
Background
The concrete is a composite material composed of river sand, broken stone, cement, fly ash, slag powder, water and water reducer, and the cement can be subjected to physical and chemical changes in the solidification process of the concrete, so that the solidified concrete has higher strength and hardness and can be widely applied to various building engineering. However, it has been found that more than 20% of the cement in the concrete does not undergo sufficient hydration reaction and only serves as a filler.
Marble need cut it when production and processing, can produce a large amount of marbles Dan Jumo when cutting, and marble saw powder belongs to the waste material, if abandon at will produce fly ash, polluted air, consequently need professional equipment to handle, otherwise can cause certain pollution to the environment, for example, can spray marble when cutting it, will mix the waste water of marble Dan Jumo again and retrieve, collect it after the marble saw powder deposits, obtain marble saw powder mud cake.
At present, higher cost is generally required for recycling the marble saw dust mud cake, so how to reduce the production cost of concrete added with marble Dan Jumo and improve the economic utilization value of the marble saw dust is a problem to be solved.
Disclosure of Invention
In order to solve the problem of how to use marble saw dust for preparing concrete on the premise of low cost, the application provides a production process and a production system of concrete added with marble Dan Jumo. According to the application, through the cooperation of a concrete production system, the marble saw dust mud cake is firstly mixed with water to prepare the suspension, and then the suspension is mixed with sand to be used for preparing concrete together.
In a first aspect, the application provides a production process of concrete added with marble Dan Jumo, which adopts the following technical scheme:
a process for producing concrete to which marble Dan Jumo is added, the process comprising the steps of:
s1, mixing marble saw dust mud cakes and water to prepare marble saw dust suspension, cleaning and screening sand, recovering fine sand, mixing the marble saw dust suspension with the fine sand, and dehydrating to prepare mixed sand;
s2, uniformly mixing the mixed sand with other preparation raw materials of the concrete to prepare the concrete;
the concrete comprises cement, fly ash, slag powder, broken stone, a water reducing agent and water as other preparation raw materials.
Because the marble saw dust has smaller particle size and the particles are tightly combined, in actual production, if the marble saw dust mud cake is directly mixed with other preparation raw materials of concrete, the mixing uniformity of the marble saw dust mud cake and the concrete cannot be ensured. And when the marble saw dust mud cake is dried and crushed and then is used for producing concrete, the defects of complex operation, high treatment cost and the like exist. Aiming at the problems, the application firstly mixes the marble saw dust mud cake with water directly to prepare the marble saw dust suspension, then evenly mixes the marble saw dust with the recycled fine sand, and then carries out dehydration treatment, so that the marble saw dust can be attached to the fine sand grains and evenly mixed with other preparation raw materials of concrete along with the fine sand, thus not only ensuring that the process of the marble saw dust is simple when the marble saw dust is used for concrete production, but also ensuring that the processing cost of the marble saw dust is low, and the marble saw dust can be more easily mixed with other preparation raw materials of concrete, thereby improving the strength of the finally prepared concrete.
Because part of cement and sand are used for filling gaps among broken stones in the raw materials for preparing the concrete, the concrete is more compact, and the addition of the marble Dan Jumo can replace part of cement and sand, so that the production cost of the concrete is reduced. In addition, the maximum grain diameter of the marble saw dust is smaller than 80 meshes, the grain diameter of fine sand is smaller than or equal to 0.5mm, and the marble saw dust is added into concrete, so that the compactness of the concrete can be improved, the structural strength of the concrete is improved, and the quality of the concrete is improved.
As preferable: the concrete comprises the following raw materials in parts by weight: 160-250 parts of cement, 30-90 parts of fly ash, 40-90 parts of slag powder, 770-930 parts of mixed sand, 990-1050 parts of crushed stone and 4.5-10.5 parts of water reducer
And 155-170 parts of water.
Through adopting above-mentioned technical scheme, can reduce the addition of partial cement and sand after adding marble saw dust, according to concrete strength's demand difference, above-mentioned preparation raw materials and addition volume can make corresponding adjustment, if: the raw materials for preparing the C15 concrete comprise, by weight, 170 parts of cement, 40 parts of fly ash, 50 parts of slag powder, 920 parts of mixed sand, 1000 parts of broken stone, 5.0 parts of a water reducer and 165 parts of water; the preparation raw materials of the C20 concrete comprise 180 parts of cement, 50 parts of fly ash, 60 parts of slag powder, 910 parts of mixed sand, 1000 parts of broken stone, 6.5 parts of water reducer and 165 parts of water; the preparation raw materials of the C25 concrete comprise 190 parts of cement, 60 parts of fly ash, 61 parts of slag powder, 880 parts of mixed sand, 1010 parts of broken stone, 7.4 parts of water reducer and 160 parts of water; the preparation raw materials of the C30 concrete comprise 190 parts of cement, 70 parts of fly ash, 70 parts of slag powder, 860 parts of mixed sand, 1020 parts of broken stone, 8.0 parts of water reducer and 160 parts of water; the preparation raw materials of the C35 concrete comprise 210 parts of cement, 70 parts of fly ash, 80 parts of slag powder, 850 parts of mixed sand, 1030 parts of crushed stone, 9.0 parts of water reducer and 160 parts of water; the preparation raw materials of the C40 concrete comprise 240 parts of cement, 80 parts of fly ash, 80 parts of slag powder, 780 parts of mixed sand, 1040 parts of crushed stone, 10.0 parts of water reducer and 160 parts of water.
In some specific embodiments, the crushed stone has a particle size of 5-30mm, and the water reducer is a polycarboxylate water reducer.
As preferable: the content of marble sawdust in the mixed sand is 9-20% of the content of the fine sand.
By adopting the technical scheme, when the content of the marble saw dust in the mixed sand is controlled within the range, the production cost can be reduced as much as possible, the strength of concrete is ensured, and the economic utilization value of the marble saw dust is brought into play to the best.
In some preferred embodiments, the marble sawdust content of the mixed sand is 10% -15% of the fine sand content.
As preferable: the mass concentration of the marble saw dust in the marble saw dust suspension is 15-40%.
Through adopting above-mentioned technical scheme, when controlling marble saw dust's concentration in the marble saw dust suspension in above-mentioned within range, can make marble Dan Jumo and fine sand more evenly mix to guarantee the filling effect of marble saw dust in the concrete, promote the homogeneity and the compactness of concrete.
In some preferred embodiments, the mass concentration of the marble saw dust in the marble saw dust suspension is 20% -30%.
As preferable: in the step S1, a dispersing agent is further added in the mixing process of the marble saw dust mud cake and water, wherein the adding amount of the dispersing agent is 5% -10% of the adding amount of the marble saw dust, and the dispersing agent comprises oleyl polyoxyethylene ether phosphate and triethylhexyl phosphoric acid.
Through adopting above-mentioned technical scheme, oleyl alcohol polyoxyethylene ether phosphate has better wetting and dispersion ability, can make marble saw powder disperse in water, prevents its gathering, and triethylhexyl phosphoric acid has stronger dispersion stability, and the two is compound, can promote the stability of marble saw powder suspension to it is more even with fine sand mixing ground.
In some preferred embodiments, the dispersant may be added in an amount of 6% or 8% of the marble saw dust added, etc.
As preferable: the mass ratio of the oleyl alcohol polyoxyethylene ether phosphate to the triethyl hexyl phosphate is (2-5): 1.
By adopting the technical scheme, the mass ratio of the oleyl alcohol polyoxyethylene ether phosphate to the triethylhexyl phosphoric acid is further adjusted, so that the synergistic effect of the oleyl alcohol polyoxyethylene ether phosphate and the triethylhexyl phosphoric acid is better, and the stability of the marble saw dust suspension is improved.
In some preferred embodiments, the mass ratio of the oleyl alcohol polyoxyethylene ether phosphate to the triethylhexyl phosphate may be 3:1 or 5:1, etc.
In a second aspect, the application provides a concrete production system added with a marble Dan Jumo, which adopts the following technical scheme: the utility model provides an add concrete production system of marble Dan Jumo, production system includes agitator, hammer crusher, sand washing all-in-one and swirler, the agitator is used for preparing marble saw end suspension, hammer crusher's material export with sand washing all-in-one's material import links to each other, hammer crusher is used for smashing the caking in the sand, sand washing all-in-one is used for wasing the sand after smashing, just sand washing all-in-one includes sand washing portion and dehydration portion, the swirler set up in between sand washing portion with dehydration portion for get rid of coarse sand in the sand after wasing and retrieve the fine sand in the sand after wasing.
By adopting the technical scheme, the marble saw dust mud cake, the dispersing agent and the water are placed into the stirring barrel to be mixed, so that the marble saw dust suspension is prepared. The production system of the application can also comprise a saw dust conveyor belt, and the marble saw dust mud cake can be conveyed by the saw dust conveyor belt to be put into the stirring barrel. Meanwhile, sand is crushed by a hammer crusher and then enters a sand washing part for cleaning, impurities in the sand are removed, then coarse sand and fine sand are separated by a cyclone, fine sand is collected and enters a dewatering part, then marble saw powder suspension is sprayed from the upper part of the fine sand, marble saw powder is mixed with the fine sand along with the penetration effect of water, and the marble saw powder mixed with the fine sand can be more easily mixed with other preparation raw materials of concrete, so that the strength of the finally prepared concrete is improved.
In some specific embodiments, the production system may further comprise a sand conveyor belt for transporting sand into the hammer crusher; and a transfer conveyor belt can be arranged between the hammer crusher and the sand washing integrated machine, and the crushed sand is conveyed to the sand washing part for washing.
As preferable: one side of the stirring barrel is provided with a water pump, a water inlet of the water pump is communicated with the stirring barrel through a water inlet pipe, a water outlet of the water pump is connected with a spray pipe, and the spray pipe is used for spraying marble saw dust suspension in the stirring barrel to fine sand of a dehydration part of the sand washing integrated machine.
As preferable: the dewatering part is a dewatering screen, and one end of the spray pipe, which is far away from the water pump, is fixedly arranged above the middle position of the dewatering screen along the sand moving direction.
Through adopting above-mentioned technical scheme, with spray tube fixed mounting in the top of dewatering screen along sand direction intermediate position, can make the marble saw powder suspension spray in the fine sand after the partial dehydration like this, fine sand part dehydration back, the fine sand that contains a small amount of water can form "loading board", when marble saw powder suspension drenches down, marble saw powder can be born and adsorb by the fine sand can form "loading board", thereby mix with fine sand, after subsequent dehydration, can prepare the higher mixed sand of quality, be favorable to the preparation of concrete, promote the intensity of concrete.
As preferable: and a concentration measuring instrument is fixedly arranged on the inner wall of the stirring barrel and is electrically connected with the water pump.
Through adopting above-mentioned technical scheme, when the concentration measuring apparatu detects that the concentration of marble saw powder suspension in the agitator reaches the predetermined value, the water pump starts, mixes marble saw powder suspension pump to dehydration portion middle part, with fine sand, need not to consume the manpower and transport marble saw powder suspension, has strengthened concrete production system's use convenience, promotes the production efficiency of mixed sand.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the application, a concrete production system is utilized, firstly, marble saw dust mud cakes and water are mixed to prepare marble saw dust suspension, then, the marble saw dust suspension is mixed with fine sand obtained by screening to prepare mixed sand, and then, the mixed sand is mixed with other concrete preparation raw materials to prepare concrete, so that the production process of the marble saw dust for preparing the concrete is simpler, and the addition of the marble saw dust can replace part of cement and sand to perform a filling effect in the concrete, so that the addition amount of cement and sand can be reduced, the production cost of the concrete is reduced, and in addition, a large amount of carbon dioxide can be released in the production process of the cement, and the reduction of the addition amount of the cement can greatly reduce the carbon emission;
2. because the particle size of the marble Dan Jumo is smaller and even smaller than that of the cement and sand replaced by the marble Dan Jumo, the uniformity and compactness of the concrete can be improved, and the structural strength of the concrete can be effectively enhanced;
3. according to the concrete production process added with marble Dan Jumo, on the premise of not increasing production cost, the application designs a concrete production system which is convenient for mixing marble sawdust and fine sand, thereby greatly saving manpower, enhancing the production convenience of mixed sand and further improving the production efficiency of concrete.
Drawings
Fig. 1 is a schematic diagram of a construction of a production system for producing concrete to which marble Dan Jumo is added in example 1 of the present application.
In the figure, 1, a saw dust conveyor belt; 2. a stirring barrel; 3. a sand conveyor belt; 4. a hammer crusher; 5. the sand washing integrated machine; 501. a sand washing part; 502. dewatering screen; 6. a cyclone; 7. a water pump; 8. a spray pipe; 9. a concentration measuring instrument.
Detailed Description
In order that the application may be more readily understood, the application will be further described in detail with reference to the following examples, which are given by way of illustration only and are not limiting in scope of application. The starting materials or components used in the present application may be prepared by commercial or conventional methods unless specifically indicated.
The raw material sources are as follows:
the cement of the application adopts ordinary Portland cement 42.5, which is purchased from Wihai mountain-water cement Co., ltd; sand and crushed stone were purchased from angtai building materials limited in the literature; the fly ash is class F I and is purchased from the Widget domain fly ash technology Co., ltd; the slag powder is grade S95 and is purchased from Wilfin Chengxiang building materials Co., ltd; the polycarboxylate water reducer is purchased from Shandong Hongquan chemical technology Co.
Example 1:
the present embodiment provides a production system for producing concrete to which the marble Dan Jumo is added, the schematic structure of which is shown in fig. 1. The production system comprises a sawdust conveying belt 1, a stirring barrel 2, a sand conveying belt 3, a hammer crusher 4, a sand washing integrated machine 5 and a cyclone 6, wherein the stirring barrel 2 is cylindrical in shape, is arranged at one end of the sawdust conveying belt 1, and can be conveyed into the stirring barrel 2 by the sawdust conveying belt 1 to be mixed with dispersing agents and water to prepare marble sawdust suspension. One side of the stirring barrel 2 is fixedly provided with a water pump 7, a water inlet of the water pump 7 is communicated with the stirring barrel 2 through a water inlet pipe, and a water outlet of the water pump 7 is connected with a spray pipe 8. The hammer crusher 4 is installed to the one end of sand conveyer belt 3 for transport the sand to smash in the hammer crusher 4, wash sand all-in-one 5 install in the hammer crusher 4 one side of keeping away from sand conveyer belt 3, just set up between hammer crusher 4 and the wash sand all-in-one 5 and transport the conveyer belt (not shown in the drawing), be used for transporting broken sand to wash sand portion 501 and wash. The sand washing integrated machine 5 comprises a sand washing part 501 and a dewatering part, the dewatering part is a dewatering screen 502, and a cyclone 6 is arranged between the sand washing part 501 and the dewatering screen 502 and is used for removing coarse sand in washed sand and recycling fine sand. One end of the spray pipe 8 far away from the water pump 7 is fixedly arranged above the middle position of the dewatering screen 502 along the sand moving direction. In addition, a concentration measuring instrument 9 is fixedly arranged on the inner wall of the stirring barrel 2, so that the concentration of the marble saw dust suspension can be detected in real time, and the concentration measuring instrument 9 is electrically connected with the water pump 7.
When producing mixed sand, the sand is transported to the hammer crusher 4 through the sand conveyer belt 3, the hammer crusher 4 can crush the agglomerated sand, the crushed sand is put into the sand washing part 501 for washing through the transportation conveyer belt, impurities in the crushed sand are removed, the washed sand enters the cyclone 6 for screening, and fine sand is recovered to the dewatering screen 502 to remove redundant water. Meanwhile, the marble saw dust mud cake is conveyed into the stirring barrel 2 through the saw dust conveying belt 1 and is mixed with the dispersing agent and water to prepare a marble saw dust suspension, when the concentration measuring instrument 9 detects that the mass concentration of the marble saw dust suspension reaches a preset value, the water pump 7 is started to pump the marble saw dust suspension to fine sand positioned on the dewatering screen 502, so that marble Dan Jumo is mixed with the fine sand, and mixed sand is prepared.
Preparation example 1
1000kg of sand is placed on a sand conveyor belt and conveyed into a hammer crusher to crush a agglomerated screen, then the crushed sand is conveyed into a sand washing part through a conveying belt to be washed, impurities in the sand are removed, the washed sand enters a cyclone, coarse sand and fine sand can be separated by the cyclone, fine sand is collected and dehydrated on a dewatering screen, wherein the grain size of the fine sand is less than or equal to 0.5mm, the impurity and coarse sand removal rate in the sand is 10%, that is, 900kg of fine sand is recovered on the dewatering screen to be dehydrated. Meanwhile, conveying the marble saw dust mud cake into a stirring barrel by a saw dust conveying belt, stirring and mixing with water to obtain a marble saw dust suspension with the mass concentration of 20%, when a concentration measuring instrument detects that the mass concentration of the marble saw dust suspension reaches 20%, starting a water pump, uniformly spraying 675L of the marble saw dust suspension with the mass concentration of 20% onto fine sand positioned on a dewatering screen through a spray pipe, and mixing the marble saw dust with the fine sand to obtain mixed sand, wherein the addition amount of the marble Dan Jumo is 135kg, and the addition amount is equivalent to 15% of the total mass of the fine sand.
Preparation example 2
Preparation example 2 is different from preparation example 1 in that 540L of a marble saw dust suspension having a mass concentration of 20% was sprayed onto fine sand located on a dewatering screen, wherein the addition amount of marble Dan Jumo was 108kg, which corresponds to 12% of the total mass of fine sand. The procedure is as in preparation example 1.
Preparation example 3
Preparation example 3 is different from preparation example 1 in that 405L of a 20% mass concentration marble saw dust suspension was sprayed onto fine sand on a dewatering screen, wherein the addition amount of marble Dan Jumo was 81kg, which corresponds to 9% of the total mass of fine sand. The procedure is as in preparation example 1.
Preparation example 4
Preparation example 4 is different from preparation example 2 in that 432L of a marble saw dust suspension having a mass concentration of 25% was sprayed onto fine sand located on a dewatering screen, wherein the addition amount of marble Dan Jumo was 108kg, which corresponds to 12% of the total mass of fine sand. The procedure is as in preparation example 2.
Preparation example 5
Preparation example 5 is different from preparation example 2 in that 360L of marble saw dust suspension having a mass concentration of 30% was sprayed onto fine sand located on a dewatering screen, wherein the addition amount of marble Dan Jumo was 108kg, which corresponds to 12% of the total mass of fine sand. The procedure is as in preparation example 2.
Preparation example 6
Preparation example 6 is different from preparation example 4 in that 6.48kg of a dispersant is further added during mixing of the marble dust cake and water, which is equivalent to 6% of the addition amount of the marble dust, wherein the dispersant comprises 4.86kg of oleyl alcohol polyoxyethylene ether phosphate and 1.62kg of triethylhexyl phosphoric acid, that is, the mass ratio of oleyl alcohol polyoxyethylene ether phosphate to triethylhexyl phosphoric acid is 3:1. The procedure is as in preparation example 4.
Preparation example 7
Preparation example 7 is different from preparation example 4 in that 8.64kg of a dispersant is further added during mixing of the marble dust cake and water, which is equivalent to 8% of the added amount of the marble dust, wherein the dispersant comprises 6.48kg of oleyl polyoxyethylene ether phosphate and 2.16kg of triethylhexyl phosphoric acid, that is, the mass ratio of oleyl polyoxyethylene ether phosphate to triethylhexyl phosphoric acid is 3:1. The procedure is as in preparation example 4.
Preparation example 8
Preparation example 8 differs from preparation example 7 in that the dispersant comprises 7.2kg of oleyl alcohol polyoxyethylene ether phosphate and 1.44kg of triethylhexyl phosphoric acid, that is, the mass ratio of oleyl alcohol polyoxyethylene ether phosphate to triethylhexyl phosphoric acid is 5:1. The procedure is as in preparation 7.
Preparation example 9
Preparation example 9 differs from preparation example 7 in that the dispersant includes 4.32kg of oleyl alcohol polyoxyethylene ether phosphate and 4.32kg of triethylhexyl phosphoric acid, that is, the mass ratio of oleyl alcohol polyoxyethylene ether phosphate to triethylhexyl phosphoric acid is 1:1. The procedure is as in preparation 7.
Examples 2 to 3
Taking the production of C25 concrete as an example, the preparation raw materials of the C25 concrete of examples 2-3 are shown in Table 1, wherein the mixed sand is the mixed sand produced in preparation example 1, the particle size of broken stone is 20mm, and the water reducing agent is a polycarboxylate water reducing agent. The concrete production method comprises the following steps: and stirring and uniformly mixing the preparation raw materials to obtain the C25 concrete.
TABLE 1 preparation raw materials and addition amount (kg) of C25 concrete
Examples 4 to 11
Examples 4 to 11 are different from example 2 in that the mixed sand was produced in preparation examples 2 to 9, and the rest is the same as example 2.
Comparative example 1
Comparative example 1 was different from example 2 in that fine sand recovered after sieving with a cyclone was used instead of the mixed sand, the fine sand was added in an amount of 840kg, the cement was added in an amount of 225kg, and the rest was the same as example 2.
Test case
The C25 concrete produced in examples 2-11 and comparative example 1 was subjected to performance test, specifically comprising 7d compressive strength, 28d compressive strength and slump, wherein the tests of 7d compressive strength and 28d compressive strength were referred to GB/T50081-2002 "Standard test method for mechanical Properties of ordinary concrete", and the test of slump was referred to GB/T50080-2002 "Standard test method for Properties of ordinary concrete mix", and the test results are shown in Table 2.
TABLE 2
| 7d compressive Strength (MPa) | 28d compressive Strength (MPa) | Slump (mm) | |
| Example 2 | 26.8 | 33.4 | 195 |
| Example 3 | 25.3 | 31.7 | 204 |
| Example 4 | 27.3 | 33.8 | 192 |
| Example 5 | 26.1 | 32.5 | 198 |
| Example 6 | 27.7 | 34.2 | 188 |
| Example 7 | 27.4 | 33.6 | 193 |
| Example 8 | 27.9 | 34.5 | 186 |
| Example 9 | 28.8 | 35.5 | 180 |
| Example 10 | 28.3 | 34.9 | 183 |
| Example 11 | 28.1 | 34.6 | 184 |
| Comparative example 1 | 26.6 | 33.5 | 197 |
As can be seen from the test results of Table 2, the C25 concrete produced in examples 2-11 and comparative example 1 had a 7d compressive strength of 25.3-28.8MPa, a 28d compressive strength of 31.7-35.5MPa and a slump of 180-204mm.
From the test results of examples 2 and 3, it is apparent that the compressive strength of the C25 concrete produced from the raw materials for preparation and the addition amount thereof of example 2 is large, the slump is small, and the marble saw dust in the mixed sand can replace part of cement to fill the concrete and can ensure the strength of the C25 concrete.
From the detection results of examples 2, 4 and 5, when the content of the marble sawdust in the mixed sand is 12% of the content of the fine sand, the strength and slump of the C25 concrete can be ensured on the premise of reducing the production cost as much as possible, and the economic utilization value of the marble sawdust is improved.
From the detection results of examples 4, 6 and 7, it is known that when the mass concentration of the marble sawdust in the marble sawdust suspension is 25%, the marble sawdust can be more uniformly mixed with fine sand, so that the filling effect of marble Dan Jumo in the C25 concrete is ensured, and the compactness of the C25 concrete is improved.
From the detection results of examples 6, 8 and 9, it is known that the dispersibility of the marble Dan Jumo can be improved and the aggregation or sinking phenomenon of the marble saw dust can be reduced by adding the oleyl polyoxyethylene ether phosphate and the triethylhexyl phosphate in the mixing process of the marble saw dust cake and the water. When the total addition amount of the oleyl alcohol polyoxyethylene ether phosphate and the triethylhexyl phosphate is 8% of the addition amount of the marble saw dust, the dispersion stability of the marble saw dust suspension is stronger, and the uniformity of mixing the marble saw dust and the fine sand is further ensured.
From the detection results of examples 9 to 11, when the mass ratio of oleyl alcohol polyoxyethylene ether phosphate to triethylhexyl phosphate is 3:1, the synergistic effect between the oleyl alcohol polyoxyethylene ether phosphate and the triethylhexyl phosphate is better, and the stability of the marble saw dust suspension can be further improved, so that the mixture is uniformly mixed with fine sand, and the strength of C25 concrete is ensured.
As is clear from the test results of example 2 and comparative example 1, comparative example 1 was not added with marble Dan Jumo, so that the strength similar to that of example 2 could be achieved after the amount of cement and fine sand was increased; in the embodiment 2, the marble Dan Jumo is added into the raw materials for preparing the C25, so that part of cement and fine sand can be replaced, the addition amount of the cement and the fine sand is reduced, and the production cost of the C25 concrete is obviously reduced.
It should be noted that the above-described embodiments are only for explaining the present application and do not constitute any limitation of the present application. The application has been described with reference to exemplary embodiments, but it is understood that the words which have been used are words of description and illustration, rather than words of limitation. Modifications may be made to the application as defined in the appended claims, and the application may be modified without departing from the scope and spirit of the application. Although the application is described herein with reference to particular means, materials and embodiments, the application is not intended to be limited to the particulars disclosed herein, as the application extends to all other means and applications which perform the same function.
Claims (10)
1. A production process of concrete added with marble Dan Jumo is characterized in that: the production process comprises the following steps:
s1, mixing marble saw dust mud cakes and water to prepare marble saw dust suspension, cleaning and screening sand, recovering fine sand, mixing the marble saw dust suspension with the fine sand, and dehydrating to prepare mixed sand;
s2, uniformly mixing the mixed sand with other preparation raw materials of the concrete to prepare the concrete;
the concrete comprises cement, fly ash, slag powder, broken stone, a water reducing agent and water as other preparation raw materials.
2. The production process according to claim 1, characterized in that: the concrete comprises the following raw materials in parts by weight: 160-250 parts of cement, 30-90 parts of fly ash, 40-90 parts of slag powder, 770-930 parts of mixed sand, 990-1050 parts of crushed stone, 4.5-10.5 parts of water reducer and 155-170 parts of water.
3. The production process according to claim 1, characterized in that: the content of marble sawdust in the mixed sand is 9-20% of the content of the fine sand.
4. A production process according to any one of claims 1-3, characterized in that: the mass concentration of the marble saw dust in the marble saw dust suspension is 15-40%.
5. A production process according to any one of claims 1-3, characterized in that: in the step S1, a dispersing agent is further added in the mixing process of the marble saw dust mud cake and water, wherein the adding amount of the dispersing agent is 5% -10% of the adding amount of the marble saw dust, and the dispersing agent comprises oleyl polyoxyethylene ether phosphate and triethylhexyl phosphoric acid.
6. The production process according to claim 5, characterized in that: the mass ratio of the oleyl alcohol polyoxyethylene ether phosphate to the triethyl hexyl phosphate is (2-5): 1.
7. A production system for a production process of the concrete added with marble Dan Jumo as defined in any one of claims 1 to 6, characterized in that: the production system comprises a stirring barrel (2), a hammer crusher (4), a sand washing integrated machine (5) and a cyclone (6), wherein the stirring barrel (2) is used for preparing marble saw dust suspension, a material outlet of the hammer crusher (4) is connected with a material inlet of the sand washing integrated machine (5), the hammer crusher (4) is used for crushing a lump in sand, the sand washing integrated machine (5) is used for cleaning the crushed sand, the sand washing integrated machine (5) comprises a sand washing part (501) and a dehydration part, and the cyclone (6) is arranged between the sand washing part (501) and the dehydration part and is used for removing coarse sand in the cleaned sand and recycling fine sand in the cleaned sand.
8. The production system of claim 7, wherein: one side of agitator (2) is provided with water pump (7), the water inlet of water pump (7) pass through the inlet tube with agitator (2) are linked together, the delivery port of water pump (7) is connected with spray tube (8), spray tube (8) are used for with marble saw powder suspension in agitator (2) sprays to on the sand of the dehydration portion of sand washing all-in-one (5).
9. The production system of claim 8, wherein: the dewatering part is a dewatering screen (502), and one end of the spray pipe (8) far away from the water pump (7) is fixedly arranged above the middle position of the dewatering screen (502) along the sand moving direction.
10. The production system of claim 8, wherein: the inner wall of the stirring barrel (2) is fixedly provided with a concentration measuring instrument (9), and the concentration measuring instrument (9) is electrically connected with the water pump (7).
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