CN115490449A - Preparation method of superfine mineral admixture - Google Patents
Preparation method of superfine mineral admixture Download PDFInfo
- Publication number
- CN115490449A CN115490449A CN202211218774.2A CN202211218774A CN115490449A CN 115490449 A CN115490449 A CN 115490449A CN 202211218774 A CN202211218774 A CN 202211218774A CN 115490449 A CN115490449 A CN 115490449A
- Authority
- CN
- China
- Prior art keywords
- grinding
- type
- industrial solid
- grinding device
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/06—Selection or use of additives to aid disintegrating
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
Abstract
The invention discloses a preparation method of an ultrafine mineral admixture, which is characterized by classifying a large amount of industrial solid waste raw materials according to grindability, classifying the raw materials into A type and B type, respectively proportioning the A type/B type raw materials, an activity excitant and a grinding aid additive according to the raw materials, feeding the raw materials into a grinding device I/grinding device II at a certain feeding station, discharging the raw materials from the grinding device when the raw materials are discharged from the grinding device at the same grinding station, feeding the discharged materials of the grinding device I and the grinding device II into a mixing device when the discharged materials are discharged from the grinding station, and uniformly mixing the discharged materials to obtain an ultrafine powder material, namely the ultrafine mineral admixture. The invention classifies bulk industrial solid wastes according to the grindability of raw materials, and puts the solid wastes with similar grindability into the same type of grinding device, so that the grinding between the materials is more sufficient. The problems that the materials with larger difference of easy grindability are mixed and ground, the grinding with good easy grindability is too fine, and the grinding with poor easy grindability is insufficient, so that the quality and the curing activity of the mineral admixture fluctuate are avoided.
Description
Technical Field
The invention relates to a preparation method of a mineral admixture, in particular to a preparation method of an ultrafine mineral admixture, belonging to the field of production technology and application of powder materials.
Background
The cement and the concrete are important ways for recycling the bulk industrial solid wastes, the annual output of the cement exceeds 20 billion tons in China, and the annual output of the premixed concrete exceeds 30 billion cubic meters.
The research on the large amount of industrial solid wastes can be used as raw materials in the cement production process or partially replace cement in concrete to be used as a cementing material, and mineral admixtures commonly used in cement and concrete are mineral admixtures such as mineral powder, fly ash, silica fume, zeolite powder, microbeads and the like, so that the consumption of cement clinker is remarkably reduced, and the carbon dioxide emission and energy consumption in the cement clinker production process are further reduced.
Li Bao Liang and the like [ hydration mechanism and durability of cement-nickel slag-lithium slag binary and ternary composite gelled materials [ D ]. Jiangsu Nanjing university, 2019] researches the hydration process and hydration mechanism of a binary or ternary composite gelled material formed by compounding nickel slag and lithium slag as admixture with cement, and deeply researches the influence of a maintenance system on the reaction activity of the nickel slag and the lithium slag and the influence of the maintenance system on the volume stability of the cement.
Wumeng and the like [ design preparation and hydration mechanism research of lime-based low-carbon cementing materials [ D ]. Jiangsu Nanjing university, 2020] researches a composite system formed by low-calcium fly ash, slag powder, cement clinker, lime, gypsum and the like to prepare the novel lime-based low-carbon cementing material, the mechanical property of the novel lime-based low-carbon cementing material is the same as that of common silicate cement, and the carbonization resistance of the novel lime-based low-carbon cementing material is slightly reduced due to lower alkalinity of the fly ash and the slag powder.
The effect of the fly ash and the slag powder on the hydration heat of the cement [ J ]. Beijing, qinghua university, 2015] researches show that the fly ash and the slag powder partially replace the cement, so that the hydration heat of the cement in each age period can be reduced.
The application research of mineral admixtures with large mixing amount in steam-cured concrete [ D ]. Beijing: qinghua university, 2015] researches show that the mechanical strength and durability of the steam-cured concrete can be improved by replacing cement with the mineral admixtures such as fly ash or mineral powder in the steam-cured concrete as a cementing material.
The research and development and application of von-Gemini and other high-performance and ultra-high-performance concrete tubular piles [ J ]. Concrete and cement products 2010, (6): 25-28] researches that when microbeads and zeolite powder are compounded and mixed under steam curing conditions (85 ℃, 4-5 h), the compressive strength of concrete reaches over 100MPa, and the mechanical property and durability of concrete are improved.
In summary, the mineral admixture prepared from the bulk industrial solid wastes shows better application performance in cement or concrete, and has certain improvement effect on workability, mechanical property, durability and the like of the concrete. Furthermore, the mineral admixture partially replaces cement in cement clinker or concrete, effectively reduces the consumption of the cement clinker, has obvious effects on reducing the energy consumption and carbon dioxide emission in the cement production process, and contributes to the implementation of resource utilization, energy conservation, environmental protection and carbon neutralization strategies of massive industrial solid wastes in China.
However, the research depth and the resource utilization degree of the mineral admixture prepared by using bulk industrial solid wastes as raw materials are relatively primary at present. A great deal of research is focused on the combination and application performance of one or two to three admixtures, the composition change of the admixtures, the processing method, the particle size distribution and the median particle size (D) of the admixtures 50 ) The research on the working performance, the mechanical property and the durability of the mineral admixture, such as fineness, particle size distribution and the like, is relatively lacked. Furthermore, the composition and source of the bulk industrial solid wastes are complex, the problems of sulfate content, clay content, stone powder content, grading distribution and the like exist, and under the working condition that the mineral admixture partially replaces cement, the problems of water demand, setting time, strength, volume stability, concrete workability and the like of cement or concrete are easily caused.
Based on the above, the invention controls the raw material composition, the grinding processing process, the grinding aid additive, the key technical indexes of the product and the like of the mineral admixture, and reports a preparation method of the superfine mineral admixture with wide raw material source, simple preparation, stable quality and high maintenance activity.
Disclosure of Invention
The invention aims to solve the problems and provide a preparation method of an ultrafine mineral admixture with wide raw material sources, simple preparation, stable quality and high curing activity.
The invention realizes the aim through the following technical scheme, a preparation method of a superfine mineral admixture comprises a large amount of industrial solid waste raw materials, wherein the large amount of industrial solid waste raw materials comprise slag, limestone, gypsum stone, coal gangue, raw ash, coarse ash, secondary ash, primary ash, silica fume, furnace slag, nickel slag, steel slag, lithium slag, carbide slag, desulfurized gypsum powder, phosphogypsum powder and marble powder, the specific preparation steps are as follows,
s1, classifying bulk industrial solid waste raw materials according to grindability, and dividing the bulk industrial solid waste into A type and B type, wherein the A type bulk industrial solid waste comprises slag, limestone, gypsum stone, coal gangue, furnace slag, nickel slag and steel slag, and the B type bulk industrial solid waste comprises raw ash, coarse ash, secondary ash, primary ash, silica fume, lithium slag, carbide slag, desulfurized gypsum powder, phosphogypsum powder and marble powder;
s2, mixing the A-type raw material, the active exciting agent and the grinding aid additive according to a raw material ratio, feeding the raw material into a grinding device I at a certain feeding stage, and discharging the raw material from the grinding device when the raw material is discharged from the grinding stage;
the mass percentage of the A-type raw material and the active exciting agent is (90-98%) (2-10%), and the dosage of the grinding aid additive is 0.05-0.1% of the total mass of the A-type raw material and the active exciting agent;
s3, mixing the B-type raw material, the active exciting agent and the grinding aid additive according to the raw material ratio, feeding the mixture into a grinding device II when the mixture enters a grinding table, and discharging the mixture from the grinding device when the mixture exits the grinding table;
the mass percentage of the B-type raw material and the active exciting agent is (90-98%) (2-10%), and the dosage of the grinding aid additive is 0.05-0.1% of the total mass of the B-type raw material and the active exciting agent;
and S4, feeding the ground materials of the grinding device I and the grinding device II to a mixing device for uniform mixing when the ground materials are discharged from a grinding table to obtain an ultrafine powder material, namely the ultrafine mineral admixture.
Preferably, before the A-type bulk industrial solid waste enters the grinding device I, the A-type bulk industrial solid waste needs to be pre-ground to have a particle size of less than 2mm, the mass proportion of the slag in the A-type bulk industrial solid waste is more than or equal to 80%, the mass proportion of the gypsum stone in the A-type bulk industrial solid waste is less than or equal to 8%, and one or more of the rest A-type raw materials can be added into the grinding device I in any mass proportion.
Preferably, the total mass ratio of the coarse ash, the raw ash, the secondary ash or the primary ash in the B-type bulk industrial solid waste is more than or equal to 80%, the total mass ratio of the desulfurized gypsum powder and the phosphogypsum powder in the B-type bulk industrial solid waste is less than or equal to 8%, the mass ratio of the siliceous dust in the B-type bulk industrial solid waste is less than or equal to 10%, and one or more of the rest B-type raw materials can be added into the grinding device II in any mass ratio.
Preferably, the activity activator is one of aluminum sulfate octadecahydrate, anhydrous sodium sulphate, calcium formate, calcium acetate and alum stone powder.
Preferably, the grinding aid additive mainly comprises an unsaturated carboxylic acid polymer and an alcohol amine monomer, wherein the unsaturated carboxylic acid polymer mainly refers to one of alkali metal salts of polyacrylic acid with the number average molecular weight of 500-3000 or alkali metal salts of hydrolyzed polymaleic anhydride, and comprises sodium salt, potassium salt and calcium salt, and the alcohol amine monomer mainly refers to one of triethanolamine, diethanol monoisopropanolamine and triisopropanolamine.
Preferably, the mass ratio of the unsaturated carboxylic acid polymer to the alkanolamine monomer is 1 (1.0-2.0).
Preferably, the 28d standard-maintenance activity of the ultrafine mineral admixture reaches the level of S95 mineral powder, and the specific surface area is 600-1000 m 2 Kg; the fineness is less than or equal to 9 percent; median particle diameter (D) 50 ) 5 to 10 mu m.
The beneficial effects of the invention are: the preparation method of the ultrafine mineral admixture disclosed by the invention has the following advantages,
1. the invention classifies the bulk industrial solid wastes according to the grindability of the raw materials, and puts the grindability similar to each other into the same type of grinding device, so that the grinding among the materials is more sufficient. The problems that the materials with larger difference of easy grindability are mixed and ground, the grinding with good easy grindability is too fine, and the grinding with poor easy grindability is insufficient, so that the quality and the curing activity of the mineral admixture fluctuate are avoided.
2. The ball forging grading in the grinding device is optimally adjusted according to the grain size of the feeding grains, the ball forging grading of different bin sections is different, the grain size of the ball forging is reduced while the grain size of the material is reduced, and the grinding device has a better grinding effect on the material or an effect of improving the production time.
3. The invention uses the compounding of alkali metal salt of unsaturated carboxylic acid polymer and alcohol amine monomer as grinding aid additive. On one hand, the alkali metal salt of the unsaturated carboxylic acid polymer is adsorbed to the surface of the raw material, so that the static electricity generated in the grinding process is reduced and a certain grinding aid effect is achieved; on the other hand, the grinding aid effect and the maintenance activity of the alcamines monomer on the raw material are utilized to improve the effect. The grinding aid improves the maintenance activity of the superfine mineral admixture and the grinding device when the superfine mineral admixture goes out of a grinding table by the aid of two functions of the grinding aid additive.
4. The invention designs a processing scheme of an ultrafine mineral admixture matched with grinding devices and mixing devices in parallel, and the fineness, the specific surface area and the median diameter (D) of the ground material are adjusted by adjusting the grinding stations of the two grinding devices 50 ) Mixing with a mixer to obtain fineness, specific surface area and median diameter (D) 50 ) And an ultrafine mineral admixture having an optimized particle size distribution.
Drawings
FIG. 1 is a flow chart of a grinding device system and a preparation process of an ultra-fine mineral admixture according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The powder raw materials in the invention are all commercial products, the parts are specified in the examples as mass parts, and the addition amount of other materials is converted into mass parts.
The specific surface area is measured by using a DBT-127 type Boehringer's air permeability specific surface area instrument;
in the invention, the fineness uses an FSY-150B cement fineness negative pressure sieve analyzer to measure the screen residue of a 30-micron square-hole sieve, and the fineness is obtained by calculating the mass percentage of the screen residue in the total material quantity;
median particle diameter (D) in the invention 50 ) And the particle size distribution was measured using a BT-9300 type laser particle size analyzer.
The standard curing activity of the mortar in the invention is tested by referring to a method specified in GB/T18046-2017 granulated blast furnace slag powder used in cement, mortar and concrete.
A preparation method of a superfine mineral admixture comprises a large amount of industrial solid waste raw materials, wherein the large amount of industrial solid waste raw materials comprise slag, limestone, gypsum stone, coal gangue, raw ash, coarse ash, secondary ash, primary ash, silica fume, furnace slag, nickel slag, steel slag, lithium slag, carbide slag, desulfurized gypsum powder, phosphogypsum powder and marble powder, and the preparation method comprises the following specific steps,
s1, classifying bulk industrial solid waste raw materials
Bulk industrial solid waste raw materials are classified into A type and B type according to grindability, the bulk industrial solid waste of the A type comprises slag, limestone, gypsum stone, coal gangue, slag, nickel slag and steel slag, and the bulk industrial solid waste of the B type comprises raw ash, coarse ash, secondary ash, primary ash, silica fume, lithium slag, carbide slag, desulfurized gypsum powder, phosphogypsum powder and marble powder.
S2, grinding the A-type raw materials
A raw material, an active exciting agent and a grinding aid additive are proportioned according to raw materials, enter a grinding device I in a certain feeding table, and are discharged from the grinding device in the same grinding table; the mass percentage of the A-type raw material and the active exciting agent is (90-98%) (2-10%), and the dosage of the grinding aid additive is 0.05-0.1% of the total mass of the A-type raw material and the active exciting agent.
In the embodiment, before the A-type bulk industrial solid waste enters the grinding device I, the A-type bulk industrial solid waste needs to be pre-ground to have a particle size of less than 2mm, the mass proportion of the slag in the A-type bulk industrial solid waste is more than or equal to 80%, the mass proportion of the gypsum stone in the A-type bulk industrial solid waste is less than or equal to 8%, and one or more of the rest A-type raw materials can be added into the grinding device I in any mass proportion.
The grinding device I in this embodiment is a commercially available pulverizer, and includes a pre-grinding device and a core grinding device.
The pre-grinding device comprises a roller press and an FPP pre-grinding system, and is mainly used for pre-grinding granular or blocky raw materials in bulk industrial solid wastes to reduce the grain size to be less than 2mm so as to meet the processing requirement of a grinding mill.
The core grinding device is a tube mill generally having the standard sizes of 3.2m × 11m,3.2m × 13m,3.2m × 15m,3.2m × 17m,3.5m × 13m,3.5m × 15m,3.5m × 17m,3.8m × 13m,3.8m × 15m,3.8m × 17m,4.2m × 13m,4.2m × 15m,4.2m × 17m, and the like, and comprises an open-path tube mill and a closed-path tube mill, and the interior of the tube mill is divided into three chamber sections by using wall plates.
The pipe mill is filled with steel balls or steel forgings serving as grinding accessories, the steel balls or the steel forgings are sold in the market and are generally made of alloy steel materials containing nickel and chromium, and the loading capacity of the steel balls or the steel forgings is 15% -30% of the volume of the pipe mill.
The diameters of the steel balls are 90mm,80mm,70mm,60mm,50mm,40mm,30mm,20mm,15mm and other sizes; the steel is forged into 90mm × 90mm,80mm × 80mm,70mm × 70mm,60mm × 60mm,50mm × 50mm,40mm × 40mm,30mm × 30mm,20mm × 20mm,15mm × 15mm, etc.
The ball forging gradation of each bin section in the tube mill is as follows: the grain diameter of the steel ball or steel forging grains in the first bin section is 60-90 mm, and each grain diameter accounts for one fourth; the grain diameter of the steel ball or steel forging grains in the second bin section is 20-50 mm, and each grain diameter accounts for one fourth; the grain diameter of the grains in the third bin section is 15-40 mm, and each grain diameter accounts for one fourth.
The material feeding process of the grinding device I comprises the steps of metering and conveying A-type bulk industrial solid wastes to a pre-grinding device through different pipelines or belt conveying systems according to the proportion of raw materials, and processing the A-type bulk industrial solid wastes into powder with the particle size less than 2mm so as to meet the feeding requirement of a core grinding device; directly metering and conveying the active excitant to a core grinding device; the liquid grinding aid additive is metered and pumped to the core grinding device through a flow pump. The materials continuously enter the core grinding device at a grinding head of the core grinding device at a certain speed.
The feeding rate of a grinding head of the core grinding device of the grinding device I is the same as the discharging rate of a mill tail, and the feeding rate of raw materials is generally adjusted according to the discharging rate of the mill tail. The powder discharge rate of the mill tail is generally called as production bench time, namely the powder discharge amount of the mill tail of the grinding device in 1 hour.
The size of the grinding device I, the steel ball/steel forging gradation of each bin section in the mill and the dosage ratio in each embodiment of the invention are shown in Table 1.
Table 1 embodiment of the grinding device I size, steel ball/steel forging gradation and amount of each bin section in the mill
S3, grinding the B raw materials
B raw materials, an active exciting agent and a grinding aid additive are mixed according to a raw material ratio, enter a grinding device II when entering a grinding table in a certain ratio, and are discharged from the grinding device when leaving the grinding table in the same ratio; the mass percentage of the B-type raw material and the active exciting agent is (90-98%) (2-10%), and the dosage of the grinding aid additive is 0.05-0.1% of the total mass of the B-type raw material and the active exciting agent.
The pulverizing device II in this embodiment is a commercially available pulverizer, and includes a pre-pulverizing device and a core pulverizing device.
The pre-grinding device comprises a roller press and an FPP pre-grinding system, and is mainly used for pre-grinding granular or blocky raw materials in bulk industrial solid wastes to reduce the grain size to be less than 2mm so as to meet the processing requirement of a grinding mill.
The core grinding device is a tube mill with the specification and the size of 3.2m multiplied by 11m,3.2m multiplied by 13m,3.2m multiplied by 15m,3.5m multiplied by 13m,3.5m multiplied by 15m,3.8m multiplied by 13m,3.8m multiplied by 15m,4.2m multiplied by 13m,4.2m multiplied by 15m and the like, and comprises an open-path tube mill and a closed-path tube mill, wherein the inner part of the tube mill is divided into three bin sections by using a wall plate.
The tube mill is filled with steel balls or steel forgings as grinding accessories, the steel balls or steel forgings are commercially available and are generally made of alloy steel materials containing nickel and chromium, and the loading capacity of the steel balls or the steel forgings is 15-30% of the volume of the tube mill.
The diameters of the steel balls are 30mm,25mm,20mm,15mm,10mm,8mm,5mm and other sizes; the steel forging was 30 mm. Times.30mm, 25mm. Times.25mm, 20mm. Times.20mm, 15mm. Times.15mm, 10mm. Times.10mm, 8mm. Times.8mm, 5mm. Times.5 mm, and the like.
The ball forging gradation of each bin section in the tube mill is as follows: the grain diameter of the steel ball or steel forging grains in the first bin section is 30-20 mm, and each grain diameter accounts for one third; the grain diameter of the steel ball or steel forging grains in the second bin section is 8-15 mm, and each grain diameter accounts for one third; the grain diameter of the grains in the third bin section is 5-10 mm, and each grain diameter accounts for one third.
The material feeding process of the grinding device II is to directly measure and convey the B-type bulk industrial solid wastes and the activity excitant to the grinding device II according to the raw material proportion; and the liquid grinding aid additive is metered and pumped to the grinding device II through a flow pump. The materials continuously enter the grinding device at a grinding head of the grinding device II at a certain speed.
The feeding rate of the grinding head of the grinding device II is the same as the discharging rate of the mill tail, and the feeding rate of raw materials is generally adjusted according to the discharging rate of the mill tail. The powder discharge rate of the mill tail is generally called as production bench time, namely the powder discharge amount of the mill tail of the grinding device in 1 hour.
The size of the grinding device II, the steel ball/steel forging gradation of each bin section in the mill and the dosage ratio in each embodiment of the invention are shown in Table 2.
Table 2 embodiment of the grinding apparatus II size, steel ball/steel forging gradation and amount of each bin in the mill
S4, preparation of superfine mineral admixture
Feeding the ground materials of the grinding device I and the grinding device II into a mixing device for uniform mixing when the ground materials are discharged from a grinding table to obtain an ultrafine powder material, namely the ultrafine mineral admixture.
The mixing device has the functions of mixing and conveying powder, is a common spiral reamer conveyor, and is used for feeding ground materials in the grinding device I and the grinding device II into the spiral reamer conveyor while mixing and conveying the ground materials to subsequent processes.
The ground materials of the grinding device I and the grinding device II are mixed, the feeding speed of the mixing device is set when the materials of the grinding device I and the grinding device II are discharged from the grinding table, and the mass ratio of the materials of the grinding device I and the grinding device II discharged from the grinding table is 1 (1-1.2). And mixing uniformly by a mixing device to obtain the superfine powder material, namely the superfine mineral admixture.
The grinding device system and the preparation process flow of the ultrafine mineral admixture are shown in figure 1.
In the invention, the total mass ratio of the coarse ash, the raw ash, the secondary ash or the primary ash in the B-type bulk industrial solid waste is more than or equal to 80%, the total mass ratio of the desulfurized gypsum powder and the phosphogypsum powder in the B-type bulk industrial solid waste is less than or equal to 8%, the mass ratio of the siliceous dust in the B-type bulk industrial solid waste is less than or equal to 10%, and one or more of the rest B-type raw materials can be added into the grinding device II in any mass ratio.
In the invention, the activity excitant is one of aluminum sulfate octadecahydrate, anhydrous sodium sulphate, calcium formate, calcium acetate and alum stone powder.
The main components of the grinding aid additive are unsaturated carboxylic acid polymer and alcamines monomer, the unsaturated carboxylic acid polymer mainly refers to one of alkali metal salt of polyacrylic acid with number average molecular weight of 500-3000 or alkali metal salt of hydrolyzed polymaleic anhydride, and comprises sodium salt, potassium salt and calcium salt, and the alcamines monomer mainly refers to one of triethanolamine, diethanol monoisopropanolamine and triisopropanolamine.
In the invention, the mass ratio of the unsaturated carboxylic acid polymer to the alcohol amine monomer is 1 (1.0-2.0).
The code, the composition and the proportion of the grinding aid additive are shown in Table 3.
TABLE 3 code, composition and proportioning table of grinding aid additives
The standard-maintenance activity of the 28d colloidal sand of the superfine mineral admixture prepared by the invention reaches the level of S95 mineral powder, and the specific surface area is 600-1000 m 2 Per Kg; the fineness is less than or equal to 9 percent; median particle diameter (D) 50 ) 5 to 10 mu m.
Example 1
Grinding processing steps of A-type industrial solid wastes: weighing A-class industrial solid wastes such as slag, limestone, gypsum stone and the like, feeding the A-class industrial solid wastes into a roller press, preparing the A-class industrial solid wastes according to the mass ratio of 80.0 percent to 12.0 percent to 8.0 percent, and processing the A-class industrial solid wastes into A-class powder with the particle size of less than 2 mm. The active excitant is aluminum sulfate octadecahydrate, and the grinding aid additive is ZM-1. The feeding rates of the A-type powder, the active exciting agent and the grinding aid additive are 30.0t/h, 0.67t/h and 15.3Kg/h, and the materials are continuously fed at a grinding head of a grinding device I to obtain the A-type mineral admixture.
B-type industrial solid waste grinding processing steps: weighing B-type industrial solid wastes such as raw ash, silica fume, lithium slag and the like, and preparing according to the mass ratio of 80.0% to 8.0% to 12.0%. The active excitant is anhydrous sodium sulphate, and the grinding aid additive is ZM-2. The feeding rates of the B-type powder, the activity excitant and the grinding aid additive are 40.0t/h, 4.1t/h and 40.8Kg/h, and the materials are continuously fed at a grinding head of a grinding device-II to obtain the B-type mineral admixture.
The A-type mineral admixture and the B-type mineral admixture enter a spiral reamer conveyor to be mixed simultaneously to obtain an ultrafine mineral admixture which is named as CXCHL-1, and tests show that the fineness of the ground powder material is 9.0 percent and the specific surface area is 600m 2 Kg, median particle diameter (D) 50 ) Is 10.0. Mu.m.
Example 2
Grinding processing steps of A-type industrial solid wastes: weighing A-class industrial solid wastes such as slag, furnace slag and the like, feeding the A-class industrial solid wastes into a roller press, preparing according to the mass ratio of 85.0% to 15.0%, and processing into A-class powder with the particle size of less than 2 mm. The active excitant is calcium formate, and the grinding aid additive is ZM-2. The feeding rates of the A-type powder, the active exciting agent and the grinding aid additive are 40.0t/h, 2.1t/h and 33.7Kg/h, and the materials are continuously fed at a grinding head of a grinding device I to obtain the A-type mineral admixture.
B-type industrial solid waste grinding processing steps: weighing B-type industrial solid wastes such as raw ash, coarse ash, desulfurized gypsum powder and the like, and preparing according to the mass ratio of 30.0 percent to 64.0 percent to 6.0 percent. The active excitant is calcium acetate, and the grinding aid additive is ZM-2. The feeding rates of the B-type powder, the active exciting agent and the grinding aid additive are 35.0t/h, 2.9t/h and 22.7Kg/h, and the materials are continuously fed at a grinding head of a grinding device-II to obtain the B-type mineral admixture.
The A-type mineral admixture and the B-type mineral admixture enter a spiral reamer conveyor to be mixed simultaneously to obtain the superfine mineral admixture named as CXCHL-2, and the fineness of the ground powder material is proved to be CXCHL-2 through tests1.5% and a specific surface area of 1000m 2 Kg, median particle diameter (D) 50 ) It was 5.0. Mu.m.
Example 3
Grinding processing steps of A-type industrial solid wastes: weighing A-type industrial solid wastes such as slag, steel slag and the like, feeding the A-type industrial solid wastes into an FPP pre-grinding system, preparing according to the mass ratio of 90.0% to 10.0%, and processing into A-type powder with the particle size of less than 2 mm. The active excitant is alunite powder and the grinding aid additive is ZM-3. The feeding rates of the A-type powder, the active exciting agent and the grinding aid additive are 50.0t/h, 2.5t/h and 35.8Kg/h, and the materials are continuously fed at a grinding head of a grinding device I to obtain the A-type mineral admixture.
B-type industrial solid waste grinding processing steps: b-type industrial solid wastes such as secondary ash, primary ash, phosphogypsum powder and the like are weighed and prepared according to the mass ratio of 70.0 percent to 25.0 percent to 5.0 percent. The active excitant is anhydrous sodium sulphate, and the grinding aid additive is ZM-5. The feeding rates of the B-type powder, the activity excitant and the grinding aid additive are 45.0t/h, 3.6t/h and 34.0Kg/h, and the materials are continuously fed at a grinding head of a grinding device-II to obtain the B-type mineral admixture.
The A-type mineral admixture and the B-type mineral admixture enter a spiral reamer conveyor to be mixed simultaneously to obtain an ultrafine mineral admixture which is named as CXCHL-3, and tests show that the fineness of the ground powder material is 5.5 percent and the specific surface area is 800m 2 Kg, median particle diameter (D) 50 ) It was 7.0. Mu.m.
Example 4
Grinding processing steps of A-type industrial solid wastes: weighing A-class industrial solid wastes such as slag, steel slag, nickel slag and the like, entering an FPP pre-grinding system, preparing according to the mass ratio of 90.0% to 10.0%, and processing into A-class powder with the particle size of less than 2 mm. The active excitant is calcium formate, and the grinding aid additive is ZM-4. The feeding rates of the A-type powder, the active exciting agent and the grinding aid additive are 30.0t/h, 3.0t/h and 29.7Kg/h, and the materials are continuously fed at a grinding head of a grinding device I to obtain the A-type mineral admixture.
B-type industrial solid waste grinding processing steps: weighing B-class industrial solid wastes such as raw ash, first-grade ash, marble powder and the like, and preparing according to the mass ratio of 50.0% to 40.0% to 10.0%. The active excitant is aluminum sulfate octadecahydrate, and the grinding aid additive is ZM-4. The feeding rates of the B-type powder, the active exciting agent and the grinding aid additive are 30.0t/h, 0.8t/h and 21.5Kg/h, and the materials are continuously fed at a grinding head of a grinding device-II to obtain the B-type mineral admixture.
The A-type mineral admixture and the B-type mineral admixture enter a spiral reamer conveyor to be mixed simultaneously to obtain an ultrafine mineral admixture which is named as CXCHL-4, and tests show that the fineness of the ground powder material is 6.5 percent and the specific surface area is 700m 2 Kg, median particle diameter (D) 50 ) It was 8.0. Mu.m.
Example 5
Grinding processing steps of A-type industrial solid wastes: weighing A-class industrial solid wastes such as slag, coal gangue, nickel slag and the like, entering an FPP pre-grinding system, preparing according to the mass ratio of 85.0 percent to 10.0 percent to 5.0 percent, and processing into A-class powder with the particle size of less than 2 mm. The active excitant is anhydrous sodium sulphate, and the grinding aid additive is ZM-5. The feeding rates of the A-type powder, the active exciting agent and the grinding aid additive are 60.0t/h, 4.4t/h and 39.5Kg/h, and the materials are continuously fed at a grinding head of a grinding device I to obtain the A-type mineral admixture.
B-type industrial solid waste grinding processing steps: weighing B-class industrial solid wastes such as secondary ash, carbide slag and the like, and preparing according to the mass ratio of 90.0% to 10.0%. The activity excitant is calcium acetate, and the grinding aid additive is ZM-6. The feeding rates of the B-type powder, the activity excitant and the grinding aid additive are 50.0t/h, 3.0t/h and 47.7Kg/h, and the materials are continuously fed at a grinding head of a grinding device-II to obtain the B-type mineral admixture.
The A-type mineral admixture and the B-type mineral admixture enter a spiral reamer conveyor to be mixed simultaneously to obtain an ultrafine mineral admixture which is named as CXCHL-5, and tests show that the fineness of the ground powder material is 3.5 percent and the specific surface area is 900m 2 Kg, median particle diameter (D) 50 ) It was 6.0. Mu.m.
Example 6
Grinding processing steps of A-type industrial solid wastes: weighing A-class industrial solid wastes such as slag, coal gangue and the like, feeding the A-class industrial solid wastes into a roller press, preparing according to the mass ratio of 85.0% to 15.0%, and processing into A-class powder with particle size of less than 2 mm. The active excitant is aluminum sulfate octadecahydrate, and the grinding aid additive is ZM-6. The feeding rates of the A-type powder, the active exciting agent and the grinding aid additive are 45.0t/h, 3.8t/h and 29.2Kg/h, and the materials are continuously fed at a grinding head of a grinding device I to obtain the A-type mineral admixture.
B-type industrial solid waste grinding processing steps: weighing B-class industrial solid wastes such as secondary ash, primary ash and the like, and preparing according to the mass ratio of 40.0% to 60.0%. The active excitant is calcium hydroxide powder, and the grinding aid additive is ZM-6. The feeding rates of the B-type powder, the active exciting agent and the grinding aid additive are 40.0t/h, 2.5t/h and 29.8Kg/h, and the materials are continuously fed at a grinding head of a grinding device-II to obtain the B-type mineral admixture.
The A-type mineral admixture and the B-type mineral admixture enter a spiral reamer conveyor to be mixed simultaneously to obtain an ultrafine mineral admixture which is named as CXCHL-6, and tests show that the fineness of the ground powder material is 6.0 percent and the specific surface area is 750m 2 Kg, median particle diameter (D) 50 ) It was 8.5 μm.
Comparative example 1
Grinding processing steps of A-type industrial solid wastes: weighing A-type industrial solid wastes such as slag, furnace slag, gypsum stone and the like, feeding the A-type industrial solid wastes into an FPP pre-grinding system, preparing according to the mass ratio of 60.0% to 25.0% to 15.0%, and processing into A-type powder with the particle size of less than 2 mm. The active excitant is alunite powder and the grinding aid additive is ZM-1. The feeding rates of the A-type powder, the active exciting agent and the grinding aid additive are 45.0t/h, 3.0t/h and 9.6Kg/h, and the materials are continuously fed at a grinding head of a grinding device I to obtain the A-type mineral admixture.
B-type industrial solid waste grinding processing steps: weighing B-class industrial solid wastes such as secondary ash, lithium slag, desulfurized gypsum powder and the like, and preparing according to the mass ratio of 70.0 percent to 15.0 percent. The active excitant is calcium formate, and the grinding aid additive is ZM-6. The feeding rates of the B-type powder, the activity excitant and the grinding aid additive are 50.0t/h, 4.5t/h and 78.2Kg/h, and the materials are continuously fed at a grinding head of a grinding device-II to obtain the B-type mineral admixture.
The A-type mineral admixture and the B-type mineral admixture enter a spiral reamer conveyor to be mixed simultaneously to obtain an ultrafine mineral admixture which is named as CXCHL-7, and tests show that the fineness of the ground powder material is 0.9 percent and the specific surface area is 1050m 2 Kg, median particle diameter (D) 50 ) And was 4.0 μm.
Comparative example 2
S95 mineral powder and silica fume are mixed according to the mass ratio of 90.0 percent to 10 percent, the feeding rates of two powder materials are respectively 30.0t/h and 3.3t/h, the materials simultaneously enter a spiral reamer conveyor to be mixed to obtain an ultrafine mineral admixture which is named as CXCHL-8, and tests show that the fineness of the ground powder material is 3.8 percent, and the specific surface area is 550m 2 Kg, median particle diameter (D) 50 ) It was 8.5 μm.
Application example 1
The performance of the ultra fine mineral admixtures was tested using the mortar test. The test was carried out with reference to the method and the maintenance conditions specified in the national standard GB/T18046-2017 granulated blast furnace slag powder for use in cement, mortar and concrete. The raw material proportion of the mortar test is 225g of conch 425 cement, 225g of mineral admixture, 1350g of standard sand and 225g of mixing water, the mixture is transferred into a standard curing box after being formed, the curing is carried out in the standard curing box with the temperature of 20 +/-2 ℃ and the relative humidity of more than or equal to 95%, and the test data of the mortar test is shown in table 4.
TABLE 4 Standard curing Activity mortar test for ultra-fine mineral admixtures
From the data in Table 4, it can be seen that the vibration spread in the mortar test using the ultra-fine mineral admixtures of the present invention was similar to or slightly better than that of the commercial S95 ore fines, and was significantly better than that of the mineral admixtures reported in other documents or patents in comparative examples 1 and 2. Under the working condition of standard maintenance, the standard culture activities of 3d,7d and 28d of the molding mortar using the ultrafine mineral admixture are slightly better than those of comparative commercially available S95 mineral powder, and the standard culture activity of 28d reaches 99% or more, thus completely meeting the technical requirements of national standard on the standard culture activity of S95 mineral powder and being obviously better than those of comparative example 1 and comparative example 2.
Application example 2
The performance of the mineral admixture for commercial concrete was tested using the concrete test. The concrete slump is tested according to the regulations in GB/T8076-2008 'concrete admixture', and the concrete test block is formed according to the regulations in GB/T50081-2002 'Standard test method for mechanical Properties of ordinary concrete'. The adopted cement is all the cement of the conch 425, and the fly ash is secondary ash; the sand is medium sand with fineness modulus Mx =2.6, and the water content of the sand is 5%; the stones are continuous graded broken stones with the grain diameter of 5-20 mm, and the water content of the stones is 2%. Concrete unit weight of 2317Kg/m in C30 strength grade 3 The concrete test raw material formulation is shown in table 5.
TABLE 5 concrete raw material proportioning table
Forming a concrete test block with the thickness of 100 multiplied by 100mm, and curing the concrete test block in a standard curing box under the curing condition of 20 +/-2 ℃ and the relative humidity of more than or equal to 95 percent. The concrete test data is shown in table 6.
TABLE 6 concrete test of admixtures
As can be seen from the data in Table 6, the slump and the spreading of the concrete using the ultra-fine mineral admixture of the present invention are significantly better than those of the mineral admixtures reported in other documents or patents of comparative examples 1 and 2, slightly better than that of the commercial S95 ore powder, and the workability of the concrete is better. Under the standard curing condition, the concrete test block formed by using the ultrafine mineral admixture completely meets the compressive strength requirement of C30 concrete, and the 7d compressive strength and the 28d compressive strength of the concrete test block are slightly better than those of commercial S95 mineral powder and the mineral admixtures in comparative examples 1 and 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1.A preparation method of an ultrafine mineral admixture is characterized by comprising the following steps: comprises bulk industrial solid waste raw materials, wherein the bulk industrial solid waste raw materials comprise slag, limestone, gypsum stone, coal gangue, raw ash, coarse ash, secondary ash, primary ash, silica fume, furnace slag, nickel slag, steel slag, lithium slag, carbide slag, desulfurized gypsum powder, phosphogypsum powder and marble powder, and the specific preparation steps are as follows,
s1, classifying bulk industrial solid waste raw materials according to grindability, and dividing the bulk industrial solid waste raw materials into a class A and a class B, wherein the class A bulk industrial solid waste comprises slag, limestone, gypsum stone, coal gangue, furnace slag, nickel slag and steel slag, and the class B bulk industrial solid waste comprises raw ash, coarse ash, secondary ash, primary ash, silica fume, lithium slag, carbide slag, desulfurized gypsum powder, phosphogypsum powder and marble powder;
s2, proportioning the A-type raw material, the activity excitant and the grinding aid additive, feeding the raw material into a grinding device I at a certain feeding stage, and discharging the raw material from the grinding device when the raw material is discharged from the grinding device;
the mass percentage of the A-type raw material and the active exciting agent is (90-98%) (2-10%), and the dosage of the grinding aid additive is 0.05-0.1% of the total mass of the A-type raw material and the active exciting agent;
s3, mixing the B-type raw material, the active exciting agent and the grinding aid additive according to the raw material ratio, feeding the mixture into a grinding device II when the mixture enters a grinding table, and discharging the mixture from the grinding device when the mixture exits the grinding table;
the mass percentage of the B-type raw material and the active exciting agent is (90-98%) (2-10%), and the dosage of the grinding aid additive is 0.05-0.1% of the total mass of the B-type raw material and the active exciting agent;
and S4, feeding the ground materials of the grinding device I and the grinding device II to a mixing device for uniform mixing when the ground materials are discharged from a grinding table to obtain an ultrafine powder material, namely the ultrafine mineral admixture.
2. The method of claim 1, wherein the step of adding the ultrafine mineral admixtures to the slurry comprises: before the A-type bulk industrial solid waste enters the grinding device I, the A-type bulk industrial solid waste needs to be pre-ground to have a particle size of less than 2mm, the mass proportion of the slag in the A-type bulk industrial solid waste is more than or equal to 80%, the mass proportion of the gypsum stone in the A-type bulk industrial solid waste is less than or equal to 8%, and one or more of the rest A-type raw materials can be added into the grinding device I in any mass proportion.
3. The method of claim 1, wherein the ultra-fine mineral admixture is prepared by: the total mass ratio of the coarse ash, the raw ash, the secondary ash or the primary ash in the B-type bulk industrial solid waste is more than or equal to 80%, the total mass ratio of the desulfurized gypsum powder and the phosphogypsum powder in the B-type bulk industrial solid waste is less than or equal to 8%, the mass ratio of the silica fume in the B-type bulk industrial solid waste is less than or equal to 10%, and one or more of the rest B-type raw materials can be added into the grinding device II in any mass ratio.
4. The method of claim 1, wherein the step of adding the ultrafine mineral admixtures to the slurry comprises: the activity excitant is one of aluminum sulfate octadecahydrate, anhydrous sodium sulphate, calcium formate, calcium acetate and alum stone powder.
5. The method of claim 1, wherein the step of adding the ultrafine mineral admixtures to the slurry comprises: the main components of the grinding aid additive are unsaturated carboxylic acid polymer and alcamines monomer, the unsaturated carboxylic acid polymer mainly refers to one of alkali metal salt of polyacrylic acid with the number average molecular weight of 500-3000 or alkali metal salt of hydrolyzed polymaleic anhydride, and comprises sodium salt, potassium salt and calcium salt, and the alcamines monomer mainly refers to one of triethanolamine, diethanol monoisopropanolamine and triisopropanolamine.
6. The method of claim 5, wherein the step of adding the ultrafine mineral admixtures to the slurry comprises: the mass ratio of the unsaturated carboxylic acid polymer to the alcohol amine monomer is 1 (1.0-2.0).
7. The method of claim 1, wherein the step of adding the ultrafine mineral admixtures to the slurry comprises: the standard-maintenance activity of the 28d colloidal sand of the superfine mineral admixture reaches the level of S95 mineral powder, and the specific surface area is 600-1000 m 2 Kg; the fineness is less than or equal to 9 percent; median particle diameter (D) 50 ) 5 to 10 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211218774.2A CN115490449A (en) | 2022-10-07 | 2022-10-07 | Preparation method of superfine mineral admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211218774.2A CN115490449A (en) | 2022-10-07 | 2022-10-07 | Preparation method of superfine mineral admixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115490449A true CN115490449A (en) | 2022-12-20 |
Family
ID=84471482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211218774.2A Pending CN115490449A (en) | 2022-10-07 | 2022-10-07 | Preparation method of superfine mineral admixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115490449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116040974A (en) * | 2023-03-20 | 2023-05-02 | 解婧秋 | Method for preparing superfine powder cement admixture |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401607A (en) * | 2002-07-25 | 2003-03-12 | 中国建筑材料科学研究院 | Composite low-heat-release high-active superfine powder concrete admixture and making method thereof |
| CN1403400A (en) * | 2002-10-14 | 2003-03-19 | 上海市建筑科学研究院 | Admixture specially for high-performance marine concrete |
| CN1482088A (en) * | 2003-06-19 | 2004-03-17 | 中国建筑材料科学研究院 | Concrete slurry form finely-divided mineral admixture and and method for manufacturing the same |
| CN101215137A (en) * | 2008-01-01 | 2008-07-09 | 桂林工学院 | Ferromanganese ore slag concrete blending material and producing method thereof |
| CN101367631A (en) * | 2008-09-27 | 2009-02-18 | 天津水泥工业设计研究院有限公司 | Ultra-fine coal ash based composite mineral blending material and manufacturing method thereof |
| CN102633461A (en) * | 2012-03-22 | 2012-08-15 | 内蒙古科技大学 | Composite gel material and preparation method thereof |
| CN102775085A (en) * | 2012-08-13 | 2012-11-14 | 厦门益材粉煤灰有限责任公司 | Fly ash compounding product and preparation method thereof |
| CN102976672A (en) * | 2012-11-27 | 2013-03-20 | 新疆研科节能科技有限公司 | Low-carbon high-performance concrete auxiliary cementing material |
| CN105152567A (en) * | 2015-09-18 | 2015-12-16 | 南京荣丰环保科技有限公司 | Slag grinding aid for vertical grinding |
| CN106082753A (en) * | 2016-06-12 | 2016-11-09 | 陕西建业环保科技有限公司 | Superfine powder concrete admixture |
| CN108341618A (en) * | 2018-02-05 | 2018-07-31 | 无锡金木土科技有限公司 | A kind of non-steamed reactive powder concrete admixture and production method |
| CN108483969A (en) * | 2018-03-08 | 2018-09-04 | 新疆研科节能科技有限公司 | Granular concrete admixture and its prilling process |
| CN108585573A (en) * | 2018-05-15 | 2018-09-28 | 北京建筑材料科学研究总院有限公司 | Composite reactive for concrete blends preparation method for material |
| CN110407492A (en) * | 2019-08-21 | 2019-11-05 | 山东鲁碧建材有限公司 | A kind of modified superfine fly ash aggregate |
| CN110903048A (en) * | 2019-11-22 | 2020-03-24 | 湖北大学 | High-activity ultrafine mineral admixture and preparation method thereof |
| CN111233364A (en) * | 2020-03-06 | 2020-06-05 | 广州市圣丰混凝土有限公司 | Composite mineral admixture, preparation method thereof and artificial sand concrete material containing composite mineral admixture |
| CN111943548A (en) * | 2020-03-16 | 2020-11-17 | 江苏奥莱特新材料股份有限公司 | Steam-pressure-free concrete active powder for PHC pipe pile and preparation method thereof |
| CN113213802A (en) * | 2021-05-10 | 2021-08-06 | 江苏金木土科技有限公司 | High-performance concrete admixture and production method thereof |
| CN114477806A (en) * | 2022-01-29 | 2022-05-13 | 钧博环保科技(大连)有限公司 | Low-carbon cementing material and preparation method thereof |
| CN114956633A (en) * | 2022-01-20 | 2022-08-30 | 福建省广建环保科技有限公司 | Superfine composite mineral admixture and preparation method and application thereof |
-
2022
- 2022-10-07 CN CN202211218774.2A patent/CN115490449A/en active Pending
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401607A (en) * | 2002-07-25 | 2003-03-12 | 中国建筑材料科学研究院 | Composite low-heat-release high-active superfine powder concrete admixture and making method thereof |
| CN1403400A (en) * | 2002-10-14 | 2003-03-19 | 上海市建筑科学研究院 | Admixture specially for high-performance marine concrete |
| CN1482088A (en) * | 2003-06-19 | 2004-03-17 | 中国建筑材料科学研究院 | Concrete slurry form finely-divided mineral admixture and and method for manufacturing the same |
| CN101215137A (en) * | 2008-01-01 | 2008-07-09 | 桂林工学院 | Ferromanganese ore slag concrete blending material and producing method thereof |
| CN101367631A (en) * | 2008-09-27 | 2009-02-18 | 天津水泥工业设计研究院有限公司 | Ultra-fine coal ash based composite mineral blending material and manufacturing method thereof |
| CN102633461A (en) * | 2012-03-22 | 2012-08-15 | 内蒙古科技大学 | Composite gel material and preparation method thereof |
| CN102775085A (en) * | 2012-08-13 | 2012-11-14 | 厦门益材粉煤灰有限责任公司 | Fly ash compounding product and preparation method thereof |
| CN102976672A (en) * | 2012-11-27 | 2013-03-20 | 新疆研科节能科技有限公司 | Low-carbon high-performance concrete auxiliary cementing material |
| CN105152567A (en) * | 2015-09-18 | 2015-12-16 | 南京荣丰环保科技有限公司 | Slag grinding aid for vertical grinding |
| CN106082753A (en) * | 2016-06-12 | 2016-11-09 | 陕西建业环保科技有限公司 | Superfine powder concrete admixture |
| CN108341618A (en) * | 2018-02-05 | 2018-07-31 | 无锡金木土科技有限公司 | A kind of non-steamed reactive powder concrete admixture and production method |
| CN108483969A (en) * | 2018-03-08 | 2018-09-04 | 新疆研科节能科技有限公司 | Granular concrete admixture and its prilling process |
| CN108585573A (en) * | 2018-05-15 | 2018-09-28 | 北京建筑材料科学研究总院有限公司 | Composite reactive for concrete blends preparation method for material |
| CN110407492A (en) * | 2019-08-21 | 2019-11-05 | 山东鲁碧建材有限公司 | A kind of modified superfine fly ash aggregate |
| CN110903048A (en) * | 2019-11-22 | 2020-03-24 | 湖北大学 | High-activity ultrafine mineral admixture and preparation method thereof |
| CN111233364A (en) * | 2020-03-06 | 2020-06-05 | 广州市圣丰混凝土有限公司 | Composite mineral admixture, preparation method thereof and artificial sand concrete material containing composite mineral admixture |
| CN111943548A (en) * | 2020-03-16 | 2020-11-17 | 江苏奥莱特新材料股份有限公司 | Steam-pressure-free concrete active powder for PHC pipe pile and preparation method thereof |
| CN113213802A (en) * | 2021-05-10 | 2021-08-06 | 江苏金木土科技有限公司 | High-performance concrete admixture and production method thereof |
| CN114956633A (en) * | 2022-01-20 | 2022-08-30 | 福建省广建环保科技有限公司 | Superfine composite mineral admixture and preparation method and application thereof |
| CN114477806A (en) * | 2022-01-29 | 2022-05-13 | 钧博环保科技(大连)有限公司 | Low-carbon cementing material and preparation method thereof |
Non-Patent Citations (7)
| Title |
|---|
| 中国国家标准化管理委员会: "GB/T 18046-2017《用于水泥、砂浆和混凝土中的粒化高炉矿渣粉》", 武汉理工大学出版社, pages: 369 * |
| 孙犁;钱大行;张日华;: "矿渣微粉基复合掺合料的试验研究", 混凝土, no. 06 * |
| 庞传涛;何廷树;高蓓;王明贵;宁纪华;刘建华;: "复合矿物掺合料对砂浆力学性能的影响", 混凝土, no. 05 * |
| 王复生等: "水泥物料高细粉磨的意义及要求", 水泥, no. 1, pages 49 - 4 * |
| 王琼,施惠生,俞海勇,徐强: "高性能混凝土中多元胶凝材料复合效应的研究", 粉煤灰, no. 06 * |
| 贾保栓;张日华;: "高性能混凝土复合掺合料的研制", 福建建材, no. 04 * |
| 黄继明等: "聚马来酸酐盐水泥助磨剂的制备及性能研究", 硅酸盐通报, vol. 34, no. 05, pages 1434 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116040974A (en) * | 2023-03-20 | 2023-05-02 | 解婧秋 | Method for preparing superfine powder cement admixture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110683774B (en) | Cementing material taking slag-steel slag-gypsum as raw material and preparation method thereof | |
| CN110041028A (en) | A kind of regeneration concrete and preparation method thereof using building waste | |
| CN109928685B (en) | Quick-hardening early-strength concrete prepared from various industrial solid wastes and preparation method thereof | |
| CN110903043B (en) | Composite steel slag activity excitant and preparation method and application thereof | |
| CN110304847A (en) | A kind of wet-milling carbide slag exciting agent and its preparation method and application | |
| CN102718423B (en) | Preparation method of low-grade activated coal ash composite material | |
| CN104876519B (en) | A kind of Pb-Zn tailings and Aggregate of recycled concrete prepare autoclaved lime-sand brick method | |
| CN112456848B (en) | Steel slag micro-powder activity excitant, preparation method and preparation device thereof | |
| CN102795883B (en) | High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof | |
| CN112608046A (en) | Coal-fired furnace slag composite mixed material and preparation method and application thereof | |
| CN102887677B (en) | Method for producing gravity cementing filler from secondary quenched slag after nickel residue iron extraction | |
| CN107522501B (en) | Aerated concrete and preparation method thereof | |
| CN106927701A (en) | A kind of special composite gelled material of maritime concrete and its production method and purposes | |
| CN115490449A (en) | Preparation method of superfine mineral admixture | |
| CN103755165A (en) | Modified silicon-manganese slag, concrete prepared from the same and preparation method for concrete | |
| CN113213797A (en) | Steel slag and slag composite admixture and preparation method and application thereof | |
| CN113213802A (en) | High-performance concrete admixture and production method thereof | |
| CN108455885B (en) | Composite portland cement and preparation method and application thereof | |
| CN101279832A (en) | Composite mineral blending concrete with mixed coarse aggregate | |
| CN115432951A (en) | Preparation method of mineral admixture for commercial concrete | |
| CN115466090B (en) | Cement-based 3D printing material utilizing solid waste as well as preparation method and application thereof | |
| CN103848580A (en) | Clinker-free slag portland cement and production method thereof | |
| CN106587867B (en) | The building block and preparation method thereof prepared using river sand as raw material | |
| CN115925344A (en) | Baking-free brick taking iron tailings as raw material and preparation method thereof | |
| CN105884235B (en) | A method of superelevation strong rubber gel material is prepared using granulated blast-furnace slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |