CN115583814A - Method for producing building sand and tailing micro powder by using high-silicon tailing slag - Google Patents
Method for producing building sand and tailing micro powder by using high-silicon tailing slag Download PDFInfo
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- CN115583814A CN115583814A CN202211175988.6A CN202211175988A CN115583814A CN 115583814 A CN115583814 A CN 115583814A CN 202211175988 A CN202211175988 A CN 202211175988A CN 115583814 A CN115583814 A CN 115583814A
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- 239000002893 slag Substances 0.000 title claims abstract description 83
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 70
- 239000010703 silicon Substances 0.000 title claims abstract description 70
- 239000004576 sand Substances 0.000 title claims abstract description 47
- 239000000843 powder Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000002245 particle Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 9
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 15
- 239000011707 mineral Substances 0.000 claims description 15
- 230000003213 activating effect Effects 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims description 14
- 239000004094 surface-active agent Substances 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000012190 activator Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 3
- -1 alkyl alcohol amine Chemical class 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000004566 building material Substances 0.000 abstract description 5
- 239000004568 cement Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 38
- 235000010755 mineral Nutrition 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000011521 glass Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006066 glass batch Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Images
Classifications
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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
- 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
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a method for producing building sand and tailing micro powder by using high-silicon tailing slag, and relates to the technical field of tailing treatment. The method comprises the steps of drying, sorting, crushing and screening the high-silicon tailing slag, dividing the high-silicon tailing slag into building sand with the particle diameter of 0.08-2.36 mm, grinding the tailing slag with the particle diameter of less than 0.08mm by adding an additive into the tailing slag to prepare tailing micropowder, using the produced building sand as a raw material of a dry-mixed mortar plant, and using the produced tailing micropowder as an admixture of concrete; the invention utilizes the high-silicon tailing slag to produce the building sand and the tailing micropowder, has good effect on mine treatment of the tailing slag, can apply the produced building sand to building material products, and the tailing micropowder is mainly applied to various fields such as concrete mixing plants and cement plants as admixture, so the requirement is large, the treatment rate of the tailing is higher, and the invention is an excellent scheme for solving the problem of tailing accumulation.
Description
Technical Field
The invention relates to the technical field of tailing treatment, in particular to a method for producing building sand and tailing micro powder by using high-silicon tailing slag.
Background
Along with the gradual mining and exploitation of world mineral resources, available resources are gradually reduced, tailings are seriously accumulated, the tailings which can be used as secondary resources begin to attract attention of people, and the problems of resource exhaustion and environmental pollution can be relieved by the development and utilization of the tailings.
The stockpiling of the tailings not only occupies cultivated land and pollutes the environment, but also needs to invest a large amount of capital for maintenance. At present, the comprehensive utilization rate of iron tailings in China is only 7 percent and is far lower than the utilization rate of 60 percent in developed countries, so that the research on the comprehensive utilization of the tailings is very important. The high-silicon tailings mainly comprise siliceous materials and metallic components, wherein the content of silicon dioxide can reach more than 60 percent, and the content of impurities is low.
At present, there are many ways to treat high silicon tailings, for example, chinese patent with publication number CN101817640B discloses a method for manufacturing microlite from high silicon iron tailings, where 30-70% of iron tailings are introduced into glass batch, the introduced iron tailings can partially replace quartz sand, alumina, soda ash, calcium carbonate and other raw materials, glass is melted for 4 hours in a glass tank furnace, crucible or box-type electric furnace, the melting temperature is 1480-1500 ℃, after the melting is completed, the glass liquid directly flows into water to form glass granules, and then the glass granules are flatly laid in a refractory mold for crystallization heat treatment, the crystallization heat treatment is performed in a tunnel furnace, shuttle furnace or box-type electric furnace, and the crystallization temperature is 1020-1050 ℃.
Although the method for manufacturing the microlite by using the high-silicon iron tailings reduces the stockpiling amount of the tailings to a certain extent and lightens the environmental pollution, the microlite serving as a building decoration material has less demand, the tailing treatment speed is lower, and the tailing stockpiling amount is more, so that the tailing treatment method with high tailing treatment speed and large demand needs to be developed urgently to solve the tailing stockpiling problem.
Disclosure of Invention
Aiming at the technical problems, the invention overcomes the defects of the prior art and provides a method for producing building sand and tailing micropowder by using high-silicon tailing slag.
In order to solve the technical problems, the invention provides a method for producing building sand and tailing micropowder by using high-silicon tailing slag.
The technical effects are as follows: the invention utilizes the high-silicon tailing slag to produce the building sand and the tailing micropowder, has good effect on mine treatment of the tailing slag, can be applied to building material products, and the tailing micropowder is mainly applied to various fields such as concrete mixing plants and cement plants as admixture, so the demand is large, the treatment rate of the tailing is higher, and the invention is an excellent scheme for solving the problem of tailing accumulation; in addition, the product produced by the method has good quality, is economic and environment-friendly, and has good industrial prospect and social benefit.
The invention further defines the technical scheme that: a method for producing building sand and tailing micro powder by using high-silicon tailing slag comprises the following steps:
s1: after the high-silicon tailing slag is dried by drying equipment, sorting the high-silicon tailing slag by an airflow sorting machine, and dividing the high-silicon tailing slag into two parts with the particle diameter of more than or equal to 0.08mm and the particle diameter of less than 0.08 mm;
s2: high silicon tailing slag with the particle diameter of more than or equal to 0.08mm is divided into a part with the particle diameter of more than 2.36mm and a part with the particle diameter of 0.08-2.36 mm through a drum sieve;
s3: throwing the screened high-silicon tailing slag with the particle diameter larger than 2.36mm into a crusher, throwing the crushed high-silicon tailing slag into a drum sieve again, and repeating the step S2;
s4: putting the high-silicon tailing slag with the particle diameter of 0.08-2.36 mm into a grading vibration sieve, and sieving the high-silicon tailing slag into medium-grade sand with the particle diameter of 0.6-2.36 mm and fine-grade sand with the particle diameter of 0.08-0.6 mm to obtain finished building sand which is mainly used as a raw material in a dry-mixed mortar plant;
s5: and (2) adding an activator and a mineral surface active agent into the high-silicon tailing slag with the particle diameter of less than 0.08mm in the step (S1) for grinding and powder selection to obtain a tailing micro powder finished product, wherein the tailing micro powder finished product is mainly used as an admixture of concrete.
Further, in the step S5, when the tailing micropowder is prepared from the high-silicon tailing slag with the particle diameter of less than 0.08mm, the following materials are mixed according to the weight ratio:
95 to 99 portions of high silicon tailing slag
1 to 5 portions of activating agent
0.05-0.2 part of mineral surface active agent;
wherein the activating agent is powder, and the mineral surface activating agent is water.
The method for producing the building sand and the tailing micro powder by using the high-silicon tailing slag comprises the step of using Na as an activating agent 2 CO 3 Or Na 2 SiO 3 Either one or a mixture of both.
The method for producing the building sand and the tailing micro powder by using the high-silicon tailing slag comprises the following steps of:
the method for producing the building sand and the tailing micro powder by using the high-silicon tailing slag comprises the step of mixing one or more of triethanolamine, diethanolamine, diethanol monoisopropanolamine or triisopropanolamine as an alkyl alcohol amine solvent.
The method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag comprises the step S5, wherein the specific surface area of the tailing micropowder is 450-550 m 2 Per kg; the 45 mu m sieve residue is less than 12 percent; the sulfur trioxide content is less than 3.5 percent.
The method for producing the building sand and the tailing micro powder by using the high-silicon tailing slag comprises the step S1 that the silicon content of the high-silicon tailing slag is more than 65 percent, and the sulfur trioxide content is less than 3.5 percent.
The beneficial effects of the invention are:
(1) According to the invention, the pretreated high-silicon tailing slag can be divided into two types, the grain diameter of the grains is 0.08mm as a boundary, the tailing slag with the grain diameter smaller than 0.08mm is added with a surfactant and an activator to be prepared into tailing micropowder, and the activated tailing micropowder is used as an admixture of concrete, so that the method is an important aspect of comprehensive utilization research of tailings in recent years and plays an important role in relieving environmental pollution and potential safety hazard caused by large-scale discharge of tailings; the high-silicon tailing slag with the grain diameter of 0.08-2.36 mm can be directly used as building sand, wherein the grains with the grain diameter of 0.08-0.6 mm are fine-grade sand, and the grains with the grain diameter of 0.6-2.36 mm are medium-grade sand, and are mainly used as raw materials of dry-mixed mortar plants and other building material products;
(2) The invention mainly aims at a large amount of solid waste tailings generated and left after mining and mineral separation, and the tailings have the requirements that the content of silicon dioxide is required to be more than 65 percent, the content of sulfur trioxide is required to be less than 3.5 percent, and the radioactivity, leaching toxicity and physical and chemical properties of the tailings are required to meet the relevant indexes of building sand and tailing micro powder;
(3) In the invention, various performance indexes of the produced building sand and tailing micro powder meet related standards, the mine tailing micro powder has good effect on mine tailing slag treatment, the requirement of the produced building sand and tailing micro powder is large, the yield is high, the whole production process is simple and practical, the cost is low, various types of tailing slag can be treated, the utilization rate of the tailing slag is extremely high, the utilization rate of the tailing slag can reach nearly 100 percent, and the production efficiency is high;
(4) In the invention, the high-silicon tailing slag is utilized to produce the building sand and the tailing micropowder, which has good effect on mine treatment tailing slag, the produced building sand can be applied to building material products, and the tailing micropowder is mainly applied to various fields such as concrete mixing plants and cement plants as admixture, so that the demand is large, the treatment rate of tailings is higher, and the method is an excellent scheme for solving the problem of tailing accumulation.
Drawings
FIG. 1 is a process flow diagram of the production of construction sand and fine tailings powder in example 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is made with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag provided by the embodiment has the advantages that the whole process is shown in figure 1, the high-silicon tailing slag is prepared firstly, and the high-silicon tailing slag adopted in the method meets the following conditions: the content of silicon dioxide is required to be more than 65%, the content of sulfur trioxide is required to be less than 3.5%, and the radioactivity, leaching toxicity and physical and chemical properties of the tailing slag are required to meet the relevant indexes of the building sand and the tailing micro powder.
Drying the high-silicon tailing slag after screening and material preparation through drying equipment, separating the high-silicon tailing slag through an airflow separator after the high-silicon tailing slag is dried, and dividing the high-silicon tailing slag into two parts with the particle diameter of more than or equal to 0.08mm and the particle diameter of less than 0.08 mm.
And step two, putting the screened part with the particle diameter larger than 0.08mm into a drum screen, and screening the part into two parts with the particle diameter between 0.08 and 2.36mm and the particle diameter larger than 2.36mm again.
And step three, putting the high-silicon tailing slag particles with the particle diameter larger than 2.36mm into a crusher, putting the crushed particles into a drum sieve again, and repeating the step two until the diameters of all the particles are between 0.08 and 2.36 mm.
And step four, putting the high-silicon tailing slag with the particle diameter of 0.08-2.36 mm obtained in the step two into a grading vibration sieve, and sieving the high-silicon tailing slag into medium-grade sand with the particle diameter of 0.6-2.36 mm and fine-grade sand with the particle diameter of 0.08-0.6 mm to obtain the finished product of the building sand, wherein the finished product of the building sand is mainly used as a raw material in a dry-mixed mortar plant and other building material products.
And step five, separating the high-silicon tailing slag with the particle diameter smaller than 0.08mm, which is screened in the step one, adding an activating agent and a mineral surface active agent into the high-silicon tailing slag for grinding and powder separation to obtain a finished tailing micropowder, wherein the tailing micropowder is mainly used as an admixture of concrete.
When the tailing micro powder is prepared in the step five, high-silicon tailing slag with the particle diameter smaller than 0.08mm is selected and mixed according to the following weight component ratio:
95 to 99 parts of high-silicon tailing slag
1 to 5 portions of activating agent
0.05-0.2 part of mineral surface active agent;
wherein the activating agent is powder, and the mineral surface activating agent is water.
When the tailing micro powder is prepared, the used activating agent can be Na 2 CO 3 Or Na 2 SiO 3 Either one or a mixture of both.
The mineral surface active agent used consists of the following substances in parts by weight:
the above-mentioned alkyl alcohol amine solvent can be one of triethanolamine, diethanolamine, diethanol monoisopropanolamine and triisopropanolamine, or the mixture of above-mentioned several solutions.
The specific surface area of the tailing micro powder produced by the high-silicon tailing slag, the activating agent and the mineral surface activating agent in the proportion is 450-550 m 2 (iv) kg; the 45 mu m screen allowance is less than 12%; the sulfur trioxide content is less than 3.5 percent.
In the invention, various indexes of the tailing micro powder prepared from metal tailing slag (the particle diameter is less than 0.08 mm) are tested by referring to a (GB/T1596-2017) standard method, a cement blank group is also set in the test as a comparative example (namely embodiment 0), the preparation scheme of the tailing micro powder is shown in table 1, and the test result is shown in table 2.
TABLE 1 metallic tailing powder (particle size less than 0.08 mm) preparation process scheme
TABLE 2 table of physicochemical properties of tailing powder prepared from metal tailing slag (particle diameter less than 0.08 mm)
As can be seen from tables 1 and 2, the metal tailing slag (the particle diameter is less than 0.08 mm) is prepared into the tailing micro powder, and the detection according to the GB/T1596-2017 method shows that the 7d activity index is greater than or equal to 68 percent, and the 28d activity index is greater than or equal to 70 percent, so that the metal tailing slag can be used as a common mineral admixture for producing cement, mortar and concrete.
Various performance indexes of the building sand and the tailing micro powder produced by the method all meet related standards, the method has good effect on mine tailing treatment, the requirement on the produced building sand and the tailing micro powder is large, the yield is high, the whole production process is simple and practical, the cost is low, various types of tailing slag can be treated, the utilization rate of the tailing slag is extremely high, the utilization rate of the tailing slag can reach nearly 100%, and the production efficiency is high.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. A method for producing building sand and tailing micro powder by using high-silicon tailing slag is characterized by comprising the following steps:
s1: after the high-silicon tailing slag is dried by drying equipment, sorting the high-silicon tailing slag by an airflow sorting machine, and dividing the high-silicon tailing slag into two parts with the particle diameter of more than or equal to 0.08mm and the particle diameter of less than 0.08 mm;
s2: high silicon tailing slag with the particle diameter of more than or equal to 0.08mm is divided into a part with the particle diameter of more than 2.36mm and a part with the particle diameter of 0.08-2.36 mm through a drum sieve;
s3: throwing the screened high-silicon tailing slag with the particle diameter larger than 2.36mm into a crusher, throwing the crushed high-silicon tailing slag into a drum sieve again, and repeating the step S2;
s4: putting the high-silicon tailing slag with the particle diameter of 0.08-2.36 mm into a grading vibration sieve, and sieving the high-silicon tailing slag into medium-grade sand with the particle diameter of 0.6-2.36 mm and fine-grade sand with the particle diameter of 0.08-0.6 mm to obtain finished building sand which is mainly used as a raw material in a dry-mixed mortar plant;
s5: and (3) adding an activator and a mineral surface active agent into the high-silicon tailing slag with the particle diameter of less than 0.08mm in the step (S1) for grinding and powder selection to obtain a finished tailing micropowder product, wherein the finished tailing micropowder product is mainly used as an admixture of concrete.
2. The method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag according to claim 1, which is characterized in that: in the step S5, when the tailing micropowder is prepared from the high-silicon tailing slag with the particle diameter of less than 0.08mm, the following substances are mixed according to the weight ratio:
95 to 99 portions of high silicon tailing slag
1 to 5 portions of activating agent
0.05-0.2 part of mineral surface active agent;
wherein the activating agent is powder, and the mineral surface activating agent is water.
3. The method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag as claimed in claim 2, characterized in that: the activator is Na 2 CO 3 Or Na 2 SiO 3 Either one or a mixture of both.
4. The method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag as claimed in claim 2, characterized in that: the mineral surface active agent consists of the following substances in parts by weight:
5. the method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag according to claim 4, which is characterized in that: the alkyl alcohol amine solvent is one or a mixture of triethanolamine, diethanolamine, diethanol monoisopropanolamine and triisopropanolamine.
6. The method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag as claimed in claim 5, wherein the method comprises the following steps: the specific surface area of the tailing micro powder in the step S5 is 450-550 m 2 (iv) kg; the 45 mu m sieve residue is less than 12 percent; the sulfur trioxide content is less than 3.5 percent.
7. The method for producing the building sand and the tailing micropowder by using the high-silicon tailing slag as claimed in claim 1, wherein: the silicon content of the high-silicon tailing slag used in the step S1 is more than 65 percent, and the sulfur trioxide content is less than 3.5 percent.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236784A (en) * | 2015-09-18 | 2016-01-13 | 花垣县强桦矿业有限责任公司 | Preparation method of composite tailing slag active micro-powder for concrete admixture |
| CN108298898A (en) * | 2018-01-21 | 2018-07-20 | 李肇炯 | A kind of method of metal tail slag production dry-mixed mortar |
| CN112723779A (en) * | 2021-01-22 | 2021-04-30 | 张延年 | Concrete admixture containing high-silicon iron tailings and preparation method thereof |
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2022
- 2022-09-26 CN CN202211175988.6A patent/CN115583814A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236784A (en) * | 2015-09-18 | 2016-01-13 | 花垣县强桦矿业有限责任公司 | Preparation method of composite tailing slag active micro-powder for concrete admixture |
| CN108298898A (en) * | 2018-01-21 | 2018-07-20 | 李肇炯 | A kind of method of metal tail slag production dry-mixed mortar |
| CN112723779A (en) * | 2021-01-22 | 2021-04-30 | 张延年 | Concrete admixture containing high-silicon iron tailings and preparation method thereof |
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Application publication date: 20230110 |