CN110981232B - Steel slag doped adhesive and preparation method thereof - Google Patents

Steel slag doped adhesive and preparation method thereof Download PDF

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CN110981232B
CN110981232B CN201911134739.0A CN201911134739A CN110981232B CN 110981232 B CN110981232 B CN 110981232B CN 201911134739 A CN201911134739 A CN 201911134739A CN 110981232 B CN110981232 B CN 110981232B
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steel slag
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weight
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CN110981232A (en
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李鹏
龚炜庭
齐泽心
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Wuhan University of Technology WUT
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
    • C04B7/19—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/1535—Mixtures thereof with other inorganic cementitious materials or other activators with alkali metal containing activators, e.g. sodium hydroxide or waterglass
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a steel slag doped adhesive and a preparation method thereof. The steel slag doped adhesive is prepared by the following preparation method: 1) mixing 700-1200 parts of cement clinker, 20-40 parts of wet desulfurization dihydrate gypsum, 15-30 parts of sodium silicate, 10-25 parts of fly ash, 5-15 parts of sodium carbonate, 10-30 parts of calcium stearate, 5-15 parts of bauxite and 10-60 parts of mirabilite to obtain an adhesive precursor; 2) adding an adhesive precursor into 700-1000 parts of molten steel slag discharged during steel making, mixing and stirring, cooling to room temperature, and grinding to obtain the steel slag doped adhesive. Aiming at the problems of low strength, poor stability, low activity and the like of a large-dosage steel slag cementing material, the invention develops a steel slag-doped adhesive, which can greatly improve the dosage of steel slag and simultaneously can meet the strength requirement of P.I 52.5R cement.

Description

Steel slag doped adhesive and preparation method thereof
Technical Field
The invention relates to an adhesive, in particular to a steel slag doped adhesive and a preparation method thereof.
Background
The steel slag is a byproduct in the steel-making process, and the production amount of the steel slag is 10 to 15 percent of the yield of the crude steel. In 2017, the production of the national metallurgical slag is 3.94 hundred million tons, wherein the production of the steel slag is 1.08 million tons, and the production is increased by 300 million tons on a par with the same. But the comprehensive utilization rate of the steel slag is very low, and the utilization rate of the converter steel slag is only 10-20%. In developed countries, the utilization rate of steel slag is over 95%. The stacking of the waste residue not only occupies a large amount of land, but also becomes a great public nuisance for polluting the environment. The problem of treatment and resource utilization of steel slag is more and more emphasized.
The research of our country on the treatment and utilization of steel slag starts at the end of the 50 th 20 th century, and has developed remarkably since the middle of the 80 th century, so far, various steel slag treatment and comprehensive utilization technologies have been researched and developed and applied to production. After being explored for decades, the utilization ways of steel slag in China are as follows: as raw material for sintered ore, roadbed material, backfill material and cement material. Wherein, the production of cement by using steel slag is one of the important ways of the comprehensive utilization of steel slag. In the early 90 s of the 20 th century, more than 50 steel slag cement production enterprises in China already form the production scale of over 200 million tons of steel slag cement produced every year, but the mixing amount of the steel slag in the cement is about 20 percent generally, so that the aim of efficiently and highly utilizing the steel slag is difficult to achieve. Only by increasing the mixing amount of the steel slag in the steel slag cement, the recycling of steel slag resources can be accelerated, and the pollution to the environment is reduced. However, as the steel slag is added, the strength of the cement is rapidly reduced and the volume stability is deteriorated, thereby limiting further increase of the steel slag.
The steel slag is composed of various oxides formed by oxidizing impurities such as silicon, manganese, phosphorus, sulfur and the like in pig iron in a smelting process and salts generated by reacting the oxides with a solvent. The main chemical components of the steel slag are CaO and SiO2、Al2O3、Fe2O3MgO and a small amount of f-CaO, MnO, FeO, P2O5And metal Fe, the components of which are similar to those of cement, is a resource with potential utilization value. However, the steel slag has low activity and high impurity content, so that the utilization rate of the steel slag is low.
At present, the utilization of the steel slag is that after molten stainless steel slag discharged from a steel-making workshop is cooled into solid, the solid is ground and then activated, so that the activity of the steel slag cannot be well increased. The performance of the steel slag doped gelled material still needs to be further improved and enhanced, which is a technical problem to be solved by workers in the field.
Disclosure of Invention
In order to overcome the problems of low strength, poor stability, low activity and the like of the conventional large-doped steel slag cementing material, the invention aims to provide a steel slag-doped adhesive, and the invention aims to provide a preparation method of the steel slag-doped adhesive.
The invention concept of the invention is as follows: according to solid physics theory, substances react more vigorously at high temperatures than at low temperatures. If the adhesive can directly react with the active excitant when the steel slag is discharged, the activity of the steel slag can be greatly increased, and the adhesive with high steel slag doping amount can be prepared by mixing the steel slag with enhanced activity and a certain proportion of cement clinker.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a preparation method of a steel slag doped adhesive, which comprises the following steps:
1) mixing 700-1200 parts by mass of cement clinker, 20-40 parts by mass of wet desulfurization dihydrate gypsum, 15-30 parts by mass of sodium silicate, 10-25 parts by mass of fly ash, 5-15 parts by mass of sodium carbonate, 10-30 parts by mass of calcium stearate, 5-15 parts by mass of bauxite and 10-60 parts by mass of mirabilite to obtain an adhesive precursor;
2) adding an adhesive precursor into molten steel slag discharged during steel making, wherein the molten steel slag is 700-1000 parts by mass, mixing and stirring, cooling to room temperature, and grinding to obtain the steel slag doped adhesive.
Preferably, in the step 1) of the preparation method of the steel slag-doped adhesive, the particle size distribution of the cement clinker is as follows: 10% by weight of particles having a particle size of less than 2.67 μm, 30% by weight of particles having a particle size of less than 5.29. mu.m, 50% by weight of particles having a particle size of less than 7.57. mu.m, 60% by weight of particles having a particle size of less than 11.18. mu.m, and 90% by weight of particles having a particle size of less than 31.09. mu.m.
Preferably, in the step 1) of the preparation method of the steel slag doped adhesive, the parameters of the wet desulfurization dihydrate gypsum are as follows: the breaking strength is 2MPa to 3 MPa; the expansion coefficient is 2-4; the standard consistency is 85 to 90 percent; the initial setting time is 5min to 10 min; the final setting time is 12 min-18 min; further preferably, the parameters of the desulfurized dihydrate gypsum are as follows: the breaking strength is 2.5 MPa; the coefficient of expansion is 3; the standard consistency is 88%; the initial setting time is 5min to 10 min; the final setting time was 15 min.
Preferably, in the preparation method 1) of the steel slag doped adhesive, the sodium silicate is anhydrous d-Na2Si2O5。
Preferably, in the preparation method of the steel slag doped adhesive, in the step 1), the granularity of the sodium silicate is 550-650 meshes; most preferably, the particle size of the sodium silicate is 600 mesh.
Preferably, in the step 1) of the preparation method of the steel slag-doped adhesive, the fly ash is selected from class I or class II F fly ash.
Preferably, in the step 1) of the preparation method of the steel slag doped adhesive, the fineness of calcium stearate is required to be at least 99 wt% and the calcium stearate can pass through a 75-micrometer screen; most preferably, the fineness of the calcium stearate is such that 99.5 wt% passes through a 75 μm sieve.
Preferably, the preparation method of the steel slag doped adhesive comprises the following steps1) In the calcium stearate, the Ca content is 6-7 wt%, the melting point is 149-155 ℃, and the density is 1.08g/cm3～1.15g/cm3。
Preferably, in the step 1) of the preparation method of the steel slag doped adhesive, the particle size of bauxite is 180-230 meshes; most preferably, the bauxite has a particle size of 200 mesh.
Preferably, in step 1) of the preparation method of the steel slag-doped adhesive, the chemical composition of the bauxite is as follows: al (Al)2O3Content greater than 85 wt%, Fe2O3TiO less than 2 wt%2The content is less than 4 wt%.
Preferably, in the step 1) of the preparation method of the steel slag doped adhesive, the density of bauxite is 3.1g/cm3～3.5g/cm3。
Preferably, in the step 1) of the preparation method of the steel slag doped adhesive, the particle size distribution of the mirabilite is as follows: 10% by weight of particles having a particle size of less than 2.75. mu.m, 30% by weight of particles having a particle size of less than 5.54. mu.m, 50% by weight of particles having a particle size of less than 8.61. mu.m, 60% by weight of particles having a particle size of less than 13.46. mu.m, and 90% by weight of particles having a particle size of less than 35.94. mu.m.
Preferably, in the step 1) of the preparation method of the steel slag doped adhesive, mixing is ball milling stirring, and the mixing is carried out in a planetary ball mill specifically; further preferably, the mixing is ball milling and stirring for 20-60 min at the rotating speed of 200-400 r/min; still more preferably, the mixing is ball milling at a rotation speed of 300r/min for 25-35 min.
Preferably, in the step 1) of the preparation method of the steel slag-doped adhesive, the particle size of the adhesive precursor is 200-300 meshes after mixing.
In the step 2) of the preparation method of the steel slag doped adhesive, the molten steel slag discharged by steelmaking is the molten steel slag just discharged by a converter in a steelmaking workshop. The temperature of the molten steel slag just discharged from the furnace is about 1300 ℃, and then an adhesive precursor is rapidly added and mixed under the high-temperature state. The materials are mutually acted at high temperature, so that the activity of the steel slag is greatly enhanced.
In the step 2) of the preparation method of the steel slag doped adhesive, mixing and stirring are carried out as soon as possible at a high temperature (1300 ℃) so as to ensure that the materials are uniformly mixed; the mixing and stirring time is preferably 20 to 40min, and more preferably 30 min.
In the step 2) of the preparation method of the steel slag doped adhesive, cold air is used for rapidly cooling the steel slag doped adhesive to the room temperature.
Preferably, in the step 2) of the preparation method of the steel slag-doped adhesive, the steel slag has the following chemical composition: CaO content of 35-38 wt%, SiO228 to 30 weight percent of Al2O313 to 16 weight percent of MgO, 8 to 10 weight percent of Fe2O3The content is 3 to 5 weight percent, and the rest is loss on ignition.
Preferably, in the step 2) of the preparation method of the steel slag-doped adhesive, the steel slag-doped adhesive is ground until the specific surface area of the steel slag-doped adhesive is 380m2/kg～450m2/kg。
Preferably, the steel slag doped adhesive comprises the following components in parts by mass: 700-980 parts of steel slag; 900-1140 parts of cement clinker; 20-40 parts of wet desulfurization dihydrate gypsum; 15-25 parts of sodium silicate; 10-22.5 parts of fly ash; 5-12.5 parts of sodium carbonate; 10-28 parts of calcium stearate; 5-12.5 parts of bauxite; 15-50 parts of mirabilite.
The invention provides a steel slag doped adhesive, which is prepared by the preparation method.
The invention has the beneficial effects that:
aiming at the problems of low strength, poor stability, low activity and the like of a large-dosage steel slag cementing material, the invention develops a steel slag-doped adhesive, which can greatly improve the dosage of steel slag and simultaneously can meet the strength requirement of P.I 52.5R cement.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The starting materials, reagents or apparatus used in the examples and comparative examples were obtained from conventional commercial sources unless otherwise specified. Unless otherwise indicated, the testing or testing methods are conventional in the art.
In the following examples, the starting materials used are illustrated below:
the particle size distribution of the cement clinker is as follows: 10% by weight of particles having a particle size of less than 2.67 μm, 30% by weight of particles having a particle size of less than 5.29. mu.m, 50% by weight of particles having a particle size of less than 7.57. mu.m, 60% by weight of particles having a particle size of less than 11.18. mu.m, and 90% by weight of particles having a particle size of less than 31.09. mu.m.
Wet desulfurization dihydrate gypsum: the flexural strength is 2.5MPa, the expansion coefficient is 3, the standard consistency is 88 percent, the initial setting time is 5-10min, and the final setting time is 15 min.
Sodium silicate: anhydrous d-Na form2Si2O5The granularity is 600 meshes, and the product is of industrial purity.
Fly ash: class I class F fly ash.
Calcium stearate: the calcium content is 6.5 +/-0.5 wt%, the melting point is 149-155 ℃, and the density is 1.08-1.15g/cm3The fineness of 99.5% was able to pass through a 75 μm sieve.
Bauxite: the grain diameter is 200 meshes, wherein Al2O3Content greater than 85 wt%, Fe2O3TiO less than 2 wt%2The content is less than 4 wt%, and the density is 3.1-3.5 g/cm3。
The particle size distribution of the mirabilite is as follows: 10% by weight of particles having a particle size of less than 2.75. mu.m, 30% by weight of particles having a particle size of less than 5.54. mu.m, 50% by weight of particles having a particle size of less than 8.61. mu.m, 60% by weight of particles having a particle size of less than 13.46. mu.m, and 90% by weight of particles having a particle size of less than 35.94. mu.m.
The chemical composition of the steel slag is as follows: CaO content of 36-37 wt%, SiO229-30 wt% of Al2O314 to 15 weight percent of MgO, 9 to 10 weight percent of Fe2O3The content is 4 wt% -4.5 wt%, and the rest is loss on ignition.
Example 1
The preparation method of the steel slag doped adhesive comprises the following steps:
1) weighing 900 parts by mass of cement clinker, 20 parts by mass of wet desulfurization dihydrate gypsum, 25 parts by mass of sodium silicate, 22.5 parts by mass of fly ash, 12.5 parts by mass of sodium carbonate, 15 parts by mass of calcium stearate, 5 parts by mass of bauxite and 15 parts by mass of mirabilite, and putting the materials into a planetary ball mill to perform ball milling and stirring for 30 minutes at a rotating speed of 300r/min to obtain an adhesive precursor with the particle size of 200-300 meshes;
2) adding adhesive precursor into 700 mass parts of molten stainless steel slag just discharged from a steelmaking workshop, simultaneously quickly and uniformly mixing at about 1300 ℃, rapidly cooling to room temperature by using cold air after stirring for 30 minutes, and grinding the steel slag mixture cooled to room temperature to a specific surface area of 380-450 m-2And/kg of powder to obtain the steel slag doped adhesive.
Example 2
The preparation method of the steel slag doped adhesive comprises the following steps:
1) weighing 940 parts by mass of cement clinker, 25 parts by mass of wet desulfurization dihydrate gypsum, 25 parts by mass of sodium silicate, 21 parts by mass of fly ash, 8 parts by mass of sodium carbonate, 10 parts by mass of calcium stearate, 11 parts by mass of bauxite and 30 parts by mass of mirabilite, and putting the materials into a planetary ball mill to perform ball milling and stirring for 30 minutes at the rotating speed of 300r/min to obtain an adhesive precursor with the particle size of 200-300 meshes;
2) rapidly adding an adhesive precursor into 790 mass parts of molten stainless steel slag just discharged from a steelmaking workshop, rapidly and uniformly mixing at about 1300 ℃, rapidly cooling to room temperature by using cold air after stirring for 30 minutes, and grinding the steel slag mixture cooled to room temperature to a specific surface area of 380-450 m-2And/kg of powder to obtain the steel slag doped adhesive.
Example 3
The preparation method of the steel slag doped adhesive comprises the following steps:
1) weighing 1120 parts by mass of cement clinker, 30 parts by mass of wet desulfurization dihydrate gypsum, 15 parts by mass of sodium silicate, 20 parts by mass of fly ash, 10 parts by mass of sodium carbonate, 12.5 parts by mass of calcium stearate, 12.5 parts by mass of bauxite and 50 parts by mass of mirabilite, and putting the mixture into a planetary ball mill to perform ball milling and stirring for 30 minutes at the rotating speed of 300r/min to obtain an adhesive precursor with the particle size of 200-300 meshes;
2) adding adhesive precursor into 850 mass parts of molten stainless steel slag just discharged from a steelmaking workshop, simultaneously quickly and uniformly mixing at about 1300 ℃, rapidly cooling to room temperature by using cold air after stirring for 30 minutes, and grinding the steel slag mixture cooled to room temperature to a specific surface area of 380-450 m-2And/kg of powder to obtain the steel slag doped adhesive.
Example 4
The preparation method of the steel slag doped adhesive comprises the following steps:
1) weighing 1140 parts by mass of cement clinker, 35 parts by mass of wet desulfurization dihydrate gypsum, 17 parts by mass of sodium silicate, 10 parts by mass of fly ash, 5 parts by mass of sodium carbonate, 28 parts by mass of calcium stearate, 5 parts by mass of bauxite and 43 parts by mass of mirabilite, and putting the materials into a planetary ball mill to perform ball milling and stirring for 30 minutes at the rotating speed of 300r/min to obtain an adhesive precursor with the particle size of 200-300 meshes;
2) adding adhesive precursor into 980 parts by mass of molten stainless steel slag just discharged from a steelmaking workshop, simultaneously stirring uniformly at 1300 ℃ quickly, after stirring for 30 minutes, rapidly cooling to room temperature by using cold air, and grinding the steel slag mixture cooled to room temperature to a specific surface area of 380-450 m-2And/kg of powder to obtain the steel slag doped adhesive.
Example 5
The preparation method of the steel slag doped adhesive comprises the following steps:
1) weighing 1050 parts by mass of cement clinker, 40 parts by mass of wet desulfurization dihydrate gypsum, 19 parts by mass of sodium silicate, 17 parts by mass of fly ash, 6 parts by mass of sodium carbonate, 12 parts by mass of calcium stearate, 6 parts by mass of bauxite and 50 parts by mass of mirabilite, and putting the materials into a planetary ball mill to perform ball milling and stirring for 30 minutes at the rotating speed of 300r/min to obtain an adhesive precursor with the particle size of 200-300 meshes;
2) adding adhesive precursor into 730 parts by mass of molten stainless steel slag just discharged from a steelmaking workshop, simultaneously quickly and uniformly mixing at about 1300 ℃, rapidly cooling to room temperature by using cold air after stirring for 30 minutes, and grinding the steel slag mixture cooled to room temperature to a specific surface area of 380-450 m-2And/kg of powder to obtain the steel slag doped adhesive.
Comparative example 1
The commercially available P · I52.5R cement was used directly as the cement in this example.
Comparative example 2
The composition of the steel slag-doped adhesive in the embodiment is the same as that in the embodiment 4, except that in the step 2) of the preparation method, the molten stainless steel slag just discharged from a steel-making workshop is cooled to room temperature, then an adhesive precursor is added, mixed and stirred, and then the steel slag-doped adhesive in the embodiment is prepared.
The performances of the cementing materials obtained in examples 1-5 and comparative examples 1-2 were tested according to the standards GB/T20491-2017 steel slag powder for cement and concrete and GB/T17671-1999 Cement mortar Strength test method (ISO method), and the specific test results are shown in Table 1.
TABLE 1 test results of Material Properties
Figure BDA0002279280730000061
The test results in table 1 show that the steel slag content in the cementing material can be increased to more than 35 wt% by using the high steel slag-doped adhesive of the invention, and the steel slag utilization rate is greatly improved, and simultaneously, the performances of the high steel slag-doped adhesive basically reach the performances of P.I 52.5R cement, and the fluidity of the cementing material is favorably increased. Meanwhile, the alkaline raw materials selected by the adhesive are easily available and cheap, so that the production cost is reduced, and the adhesive is suitable for popularization and application.
As can be seen from the comparison of the test results of the example and the comparative example 2, the performance of the cementing material prepared by reacting with the steel slag at high temperature is obviously superior to that of the conventional adhesive prepared by cooling the steel slag.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (10)

1. The preparation method of the steel slag doped adhesive is characterized by comprising the following steps of: the method comprises the following steps:
1) mixing 700-1200 parts by mass of cement clinker, 20-40 parts by mass of wet desulfurization dihydrate gypsum, 15-30 parts by mass of sodium silicate,
10-25 parts of fly ash, 5-15 parts of sodium carbonate, 10-30 parts of calcium stearate, 5-15 parts of bauxite and 10-60 parts of mirabilite by mass are mixed to obtain an adhesive precursor;
2) adding an adhesive precursor into molten steel slag discharged during steel making, wherein the molten steel slag is 700-1000 parts by mass, mixing and stirring, cooling to room temperature, and grinding to obtain a steel slag doped adhesive;
in the step 2), the steel slag comprises the following chemical compositions: CaO content of 35-38 wt%, SiO228 to 30 weight percent of Al2O313 to 16 weight percent of MgO, 8 to 10 weight percent of Fe2O3The content is 3 to 5 weight percent, and the rest is loss on ignition.
2. The method of claim 1, wherein: in the step 1), the particle size distribution of the cement clinker is as follows: 10% by weight of particles having a particle size of less than 2.67 μm, 30% by weight of particles having a particle size of less than 5.29. mu.m, 50% by weight of particles having a particle size of less than 7.57. mu.m, 60% by weight of particles having a particle size of less than 11.18. mu.m, and 90% by weight of particles having a particle size of less than 31.09. mu.m.
3. The method of claim 1, wherein: in the step 1), the parameters of the wet desulfurization dihydrate gypsum are as follows: the breaking strength is 2MPa to 3 MPa; the expansion coefficient is 2-4; the standard consistency is 85 to 90 percent; the initial setting time is 5min to 10 min; the final setting time is 12 min-18 min.
4. The method of claim 1, wherein: in the step 1), soaking the flowersThe alkali is d-Na in anhydrous d type2Si2O5The granularity of the sodium silicate is 550 meshes to 650 meshes.
5. The method of claim 1, wherein: in the step 1), the fly ash is selected from class I or class II F fly ash.
6. The method of claim 1, wherein: in the step 1), the fineness of calcium stearate is required to be at least 99 wt% of calcium stearate which can pass through a 75-micron screen.
7. The method of claim 1, wherein: in the step 1), the particle size of the bauxite is 180-230 meshes.
8. The method of claim 1, wherein: in the step 1), the particle size distribution of the mirabilite is as follows: 10% by weight of particles having a particle size of less than 2.75. mu.m, 30% by weight of particles having a particle size of less than 5.54. mu.m, 50% by weight of particles having a particle size of less than 8.61. mu.m, 60% by weight of particles having a particle size of less than 13.46. mu.m, and 90% by weight of particles having a particle size of less than 35.94. mu.m.
9. The method of claim 1, wherein: in the step 2), grinding is carried out until the specific surface area of the steel slag doped adhesive is 380m2/kg～450m2/kg。
10. The steel slag doped adhesive is characterized by comprising the following components in parts by weight: is prepared by the preparation method of any one of claims 1 to 9.
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