CN115872636A - Application of modified steel slag in preparation of fitness equipment - Google Patents
Application of modified steel slag in preparation of fitness equipment Download PDFInfo
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- CN115872636A CN115872636A CN202211569021.6A CN202211569021A CN115872636A CN 115872636 A CN115872636 A CN 115872636A CN 202211569021 A CN202211569021 A CN 202211569021A CN 115872636 A CN115872636 A CN 115872636A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 149
- 239000010959 steel Substances 0.000 title claims abstract description 149
- 239000002893 slag Substances 0.000 title claims abstract description 148
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 11
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 7
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 6
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 6
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 6
- 238000007598 dipping method Methods 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000003085 diluting agent Substances 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims abstract description 3
- JYIMWRSJCRRYNK-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4] JYIMWRSJCRRYNK-UHFFFAOYSA-N 0.000 claims abstract 3
- 238000002156 mixing Methods 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 6
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 5
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 claims description 4
- 239000000429 sodium aluminium silicate Substances 0.000 claims description 4
- 235000012217 sodium aluminium silicate Nutrition 0.000 claims description 4
- 239000002440 industrial waste Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 36
- 229910052742 iron Inorganic materials 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000011575 calcium Substances 0.000 description 9
- 239000000292 calcium oxide Substances 0.000 description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 239000000395 magnesium oxide Substances 0.000 description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 239000004568 cement Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910019440 Mg(OH) Inorganic materials 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 235000013527 bean curd Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
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- 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
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses application of modified steel slag in preparation of fitness equipment, and belongs to the field of fitness equipment. The method comprises the following specific steps: filling the modified steel slag serving as aggregate into a mold for molding, curing, encapsulating or plastic dipping to obtain the fitness equipment, wherein the preparation method of the modified steel slag comprises the following steps: (1) naturally cooling the high-temperature liquid steel slag to a low temperature; (2) Putting the low-temperature liquid steel slag into a hot stuffy tank, and adding water to cover the tank for sealing for a period of time; (3) Intermittently spraying a diluent of a steel slag treating agent to the steel slag in the hot stuffy tank to obtain modified steel slag; the steel slag treating agent is prepared with sodium silicate, sodium aluminate, sodium silicoaluminate, sodium sulfate, calcium hydroxide, aluminum sulfate and/or aluminum hydroxide as main component. The manufacturing method of the invention is green and environment-friendly, the density of the iron-containing component in the steel slag is large enough, the high density of the aggregate is ensured by mixing the iron-containing component in the steel slag, the volume is smaller in fitness equipment with the same weight grade, and the preparation method is simple and has low cost.
Description
Technical Field
The invention belongs to the field of fitness equipment, and particularly relates to treatment of solid waste such as steel slag.
Background
The steel slag is waste slag in the steel-making industry, the discharge amount of the steel slag is 15-20% of the output of crude steel, and the waste steel slag discharged in large amount can cause the problems of resource waste, land occupation, environmental pollution and the like. With the development of the steel industry, the discharge amount of steel slag is increased, and the consumption speed of the steel slag is lower than the discharge speed, so that the storage amount of the steel slag is increased continuously. In 2017, the discharge amount of steel slag in China is about 8000 ten thousand t each year, the steel yield in 2018 is about 11 hundred million t, and the steel slag yield is about 1.7 hundred million t, but the utilization rate is only 22 percent and is less than 30 percent. In these days of increasingly scarce resources, how to effectively and rapidly treat and utilize the steel slag becomes a focus of attention. In order to find an effective comprehensive utilization method, many researchers have made much research on the comprehensive utilization of steel slag. With the development of the comprehensive utilization technology of the steel slag, the steel slag becomes a resource, is popularized and applied in a plurality of industries, and provides technical support for the comprehensive utilization of the steel slag due to the release of a series of steel slag product standards.
The existing dumbbell is mostly made of metal materials such as steel, the dumbbell is molded by casting or mechanically cut and polished by high-temperature melting, the manufacturing process is complex, the energy consumption is large, the cost is high, the price is high, and the dumbbell made of the metal materials can generate rust and stain after being used for a period of time; the existing steel slag is mostly used as a low-grade building material, and needs complicated processing such as crushing, sorting, fine grinding, multi-grade iron removal and the like to eliminate possible potential safety hazards, and has high application cost and low yield value.
Through retrieval, the Chinese patent application number is 201310233233446.4, the application publication date is 2014, 12 and 24, and the short-flow production process for casting the barbell and dumbbell products by utilizing the waste steel and iron slag is described, and comprises the following steps: (1) crushing steel slag, iron flow or waste steel produced by a blast furnace for smelting molten iron in a large-scale steel smelting plant, and screening and recovering a raw material containing iron; (2) and (3) putting the recovered raw materials containing the iron components into one or more intermediate frequency furnaces in a foundry to be recycled, heating and smelting molten iron, keeping the temperature at 1300-1600 ℃, and then casting into dumbbell-shaped bar products. However, the proposal still cannot utilize the non-iron components of the steel slag, and the gelling property of the steel slag is a worthwhile resource, so the proposal does not utilize the steel slag to the maximum extent.
Wherein, the steel slag mainly contains mineral substances such as calcium, iron, aluminum, silicon, magnesium and the like, and because the steel slag is generated at about 1600 ℃ and is slowly cooled, the crystal growth in the steel slag is overlarge, the activity is poor and the reaction is not easy to occur. Particularly, the expansion coefficients of f-CaO and f-MgO contained in the steel slag are large, and the excessive content of the f-CaO and the f-MgO can cause the steel slag to be extremely easy to expand and crack in the later use process, thereby causing the bean curd residue engineering. However, the gel material of the products such as the wall material doped with the steel slag is normal, but the aggregate contains f-CaO and f-MgO, which are easy to crack, and the unqualified aggregate at the early stage is difficult to detect. When the steel slag is used in the production of cement products, most energy of the cement is stored in the cement due to quick cooling and extreme cooling reactions in the production of the cement, so that the hydration reaction of the cement with water can release a large amount of heat, and the later period easy expansion and cracking of the steel slag doped wall material are promoted.
Therefore, in order to better utilize the steel slag resource, an application method of the modified steel slag in preparing fitness equipment is provided.
Disclosure of Invention
1. Problems to be solved
The invention provides application of modified steel slag in preparation of fitness equipment, and aims to treat the steel slag at low cost, eliminate instability of the steel slag and fully utilize the gelling property of the steel slag to prepare the fitness equipment.
2. Technical scheme
In order to solve the problems, the invention aims to provide a novel green and environment-friendly dumbbell manufacturing method, which not only saves investment, but also can realize high value-added utilization of steel slag and reduce production cost. The technical scheme is as follows:
the application of the modified steel slag in preparing the fitness equipment comprises the following steps of filling the modified steel slag serving as aggregate into a mold for molding, maintaining, encapsulating or dipping to obtain the fitness equipment, wherein the preparation method of the modified steel slag comprises the following steps:
(1) Naturally cooling the high-temperature liquid steel slag to a low temperature;
(2) Putting the low-temperature liquid steel slag into a hot stuffy tank, and adding water to cover the tank for sealing for a period of time;
(3) Intermittently spraying a diluent of a steel slag treating agent to the steel slag in the hot stuffy tank to obtain modified steel slag; wherein the main component of the steel slag treating agent is sodium silicate Na 2 SiO 3 Sodium aluminate NaAlO 2 Sodium aluminosilicate AlNaO 6 Si 2 Sodium sulfate Na 2 SO 4 Calcium sulfate CaSO 4 Calcium hydroxide Ca (OH) 2 Aluminum sulfate Al 2 (SO 4 ) 3 Aluminum hydroxide Al (OH) 3 One or more of them are mixed.
In one possible embodiment of the invention, the modified steel slag is used as aggregate, and the solidified material is added, the mixture is filled into a mould for forming, and is cured for about 28 days, and is encapsulated or soaked for plastic, so as to obtain the fitness equipment with the desired shape. Wherein the curing material is any additive for cement curing, such as zeolite, clay, retarder or accelerator, butyl stearate, and the like.
In one possible embodiment of the present invention, the exercise apparatus includes, but is not limited to, a barbell disc, a barbell bar, and a dumbbell.
In one possible embodiment of the present invention, in step (1), the liquid steel slag is controlled to be cooled to 300-800 ℃.
In one possible embodiment of the present invention, in the step (2), after the thermally sealed can is sealed, the internal pressure is maintained at 1 to 1.5 atm for 0.5h.
In one possible embodiment of the present invention, in the step (3), the steel slag treating agent is preferably a mixture of sodium silicate and sodium sulfate.
In one possible embodiment of the invention, the mass ratio of sodium silicate to sodium sulfate is 3.
In one possible embodiment of the invention, in step (3), the steel slag treatment agent further contains water.
In a possible embodiment of the invention, in the step (3), the slag treating agent is an industrial waste liquid containing one or more of sodium silicate, sodium aluminate, sodium aluminosilicate, sodium sulfate, calcium hydroxide, aluminum sulfate and aluminum hydroxide.
In one possible embodiment of the invention, in the step (3), the mass of the steel slag treating agent added is 3-5% of the mass of the steel slag.
In one possible embodiment of the invention, in step (3), the steel slag treating agent has a dilution concentration of 10g/L.
In one possible embodiment of the present invention, in the step (3), the time required for intermittently spraying the steel slag treating agent is 10 to 15 hours.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) The manufacturing method of the fitness equipment is green and environment-friendly, and because the fitness equipment only needs enough density to ensure the weight, and the steel slag contains enough iron and iron-containing components with large density, the steel slag is mixed in the steel slag to ensure that the density of the aggregate is large, and in the fitness equipment with the same weight grade, the equipment prepared by the steel slag has smaller volume; meanwhile, the steel slag of the invention contains more stable gel property, through the modification treatment of the steel slag, the instability of the steel slag is eliminated, in the process of compression molding of fitness equipment, high-temperature melting treatment is not needed, the preparation method is simple and the cost is low. It is worth to explain that the invention can design the corresponding mould according to the size and shape of the body-building apparatus, for example, the dumbbell disk is a disc, the outer edge can be a standard circle, also can be a regular hexagon, octagon and other inscribed polygon of the excircle, the diameter of the disk can be the same, also can be decreased gradually or increased gradually according to a certain number sequence; compared with the prior art, the dumbbell has the advantages that the dumbbell is novel in structure, compact and reasonable in configuration, DIY (Dolly it is easy to operate) for body builders, and the weight of the dumbbell can be adjusted at will; the process investment is saved, the operation cost is low, and no pollution is caused; solid wastes such as steel slag and the like are utilized with high added value, so that waste is changed into valuable, and the production cost is reduced;
(2) In the process of modifying steel slag, after the steel slag treating agent is intermittently sprayed to the high-temperature steel slag to be treated, because of the expansion of iron and slagThe expansion coefficients are different, so that uneven cold contraction is generated, and the slag and the iron are separated; meanwhile, the steel slag and steel slag treating agent added according to the chemical composition of the steel slag promotes substances such as free calcium oxide, free magnesium oxide and the like to be converted into harmless calcium hydroxide and magnesium hydroxide under high temperature and high pressure, scientifically and reasonably regulates the chemical composition of the steel slag, and simultaneously forms a large amount of C 3 Tricalcium S silicate, C 2 Dicalcium S silicate, C 3 A, tricalcium aluminate, AFm and other active substances enable common steel slag to generate high-performance steel slag; the working principle is as follows: na in steel slag treating agent + 、Ca 2+ 、Al 3+ Hydrolysis promoted by alkali metal ions to OH - So that free CaO and free MgO (f-CaO and f-MgO) which are easy to expand react into hydroxide Ca (OH) which is not easy to expand 2 、Mg(OH) 2 ，Ca(OH) 2 、Mg(OH) 2 Supply of OH - So that the steel slag treating agent generates C 3 Tricalcium S silicate, C 2 Dicalcium S silicate, C 3 A tricalcium aluminate, AFm and other active substances;
because the minerals such as calcium, iron, aluminum, silicon, magnesium and the like in the steel slag are relatively stable, C is not easy to generate 3 S、C 2 S、C 3 A. AFm, and the like, so that the steel slag treating agent of the invention promotes the generation of Ca (OH) by matching with the process of the invention 2 、Mg(OH) 2 And the like, a hydroxide, a salt of a carboxylic acid,
the steel slag component is mineral, is not simple CaO and MgO, and exists in the form of mineral such as calcium forsterite and spinel, and is difficult to hydrolyze. By using the process of the invention, under the environment of 1-1.5 atmospheric pressure and 300-800 ℃, the large steel slag is decomposed and dispersed, and under the synergistic action of the steel slag treating agent, the large steel slag is decomposed into small blocks, the reaction contact area of the small steel slag is increased, the reaction is easy, and free calcium oxide and free magnesium oxide in the steel slag are expanded in advance, so that the steel slag is prevented from expanding and cracking in the later-stage use process of the wall material. Meanwhile, according to the invention, uneven shrinkage is generated according to different expansion coefficients of the slag and iron, and the steel slag is cracked, so that the iron in the steel slag can be separated.
Drawings
FIG. 1 is a flow chart of the manufacturing process of the exercise apparatus of the present invention.
Detailed Description
The invention is further described with reference to specific examples.
Examples
Referring to fig. 1, the application of the modified steel slag in the preparation of fitness equipment in the embodiment comprises the following steps:
step one, preparing a steel slag treating agent: sodium silicate Na is added by the person skilled in the art 2 SiO 3 Sodium aluminate NaAlO 2 Sodium aluminosilicate AlNaO 6 Si 2 Sodium sulfate Na 2 SO 4 Calcium sulfate CaSO 4 Calcium hydroxide Ca (OH) 2 Aluminum sulfate Al 2 (SO 4 ) 3 Aluminum hydroxide Al (OH) 3 After one or more of the above components are mixed, diluting the mixture to 10g/L with water to obtain a steel slag treating agent, taking the mass ratio of sodium silicate to sodium sulfate as an example 3;
step two, modification treatment of steel slag:
(a) Cooling steel slag: naturally cooling 1t of liquid steel slag (about 1600 ℃) to 800 ℃ to obtain low-temperature steel slag to be treated;
(b) Putting the steel slag to be treated into a hot stuffy tank, adding 0.5kg of water to cover the tank, sealing, and keeping the pressure in the tank at 1-1.5 atmospheric pressure for 0.5h;
(c) Intermittently spraying the steel slag treating agent prepared in the step one onto the steel slag in the tank in the step (b), wherein the amount of the sprayed steel slag treating agent is 0.3t, and the spraying lasts for 12 hours; obtaining the modified steel slag.
Step three, preparing the fitness equipment: and (3) filling the modified steel slag prepared in the step two into a mould, performing compression molding, maintaining for about 28 days, and encapsulating or dipping plastic to prevent the steel slag from scattering, wherein the thickness of the encapsulation or dipping plastic is preferably 3-5 mm, so as to obtain fitness equipment, including but not limited to barbell plates, barbell rods, dumbbells and the like. Of course, in order to improve the formability of the steel slag in the mold, some additives such as zeolite, clay, retarder or accelerator, butyl stearate, etc. may be properly added during the forming process.
The above description is a more detailed description of the present invention with reference to specific preferred embodiments, and it is not intended to limit the present invention to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications, additions, substitutions, and the like can be made without departing from the spirit of the invention.
Claims (10)
1. The application of the modified steel slag in preparing fitness equipment is characterized in that: filling the modified steel slag serving as aggregate into a mold for molding, curing, encapsulating or plastic dipping to obtain the fitness equipment, wherein the preparation method of the modified steel slag comprises the following steps:
(1) Naturally cooling the high-temperature liquid steel slag to a low temperature;
(2) Putting the low-temperature liquid steel slag into a hot stuffy tank, and adding water to cover the tank for sealing for a period of time;
(3) Intermittently spraying a diluent of a steel slag treating agent to the steel slag in the hot stuffy tank to obtain modified steel slag; the steel slag treating agent is mainly prepared by mixing one or more of sodium silicate, sodium aluminate, sodium silicoaluminate, sodium sulfate, calcium hydroxide, aluminum sulfate and aluminum hydroxide.
2. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, is characterized in that: including but not limited to barbell plates, barbell bars, and dumbbells.
3. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, wherein the steel slag comprises the following components in percentage by weight: in the step (1), the liquid steel slag is controlled to be cooled to 300-800 ℃.
4. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, wherein the steel slag comprises the following components in percentage by weight: in the step (2), after the tank is sealed by hot sealing, the internal air pressure is kept at 1-1.5 atmospheric pressures, and the tank is sealed for 0.5h.
5. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, wherein the steel slag comprises the following components in percentage by weight: in the step (3), the steel slag treating agent is preferably a mixture of sodium silicate and sodium sulfate.
6. The application of the modified steel slag in preparing fitness equipment according to claim 5, wherein the steel slag comprises the following components in percentage by weight: the mass ratio of the sodium silicate to the sodium sulfate is 3.
7. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, wherein the steel slag comprises the following components in percentage by weight: in the step (3), the steel slag treating agent also contains water.
8. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, wherein the steel slag comprises the following components in percentage by weight: in the step (3), the steel slag treating agent is industrial waste liquid containing one or more of sodium silicate, sodium aluminate, sodium aluminosilicate, sodium sulfate, calcium hydroxide, aluminum sulfate and aluminum hydroxide.
9. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, wherein the steel slag comprises the following components in percentage by weight: in the step (3), the mass of the added steel slag treating agent is 3-5% of the mass of the steel slag.
10. The application of the modified steel slag in the preparation of fitness equipment according to claim 1, wherein the steel slag comprises the following components in percentage by weight: in the step (3), the time required for intermittently spraying the steel slag treating agent is 10-15 h.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101396843A (en) * | 2007-09-27 | 2009-04-01 | 张金宝 | Processing method of dumbbell, disc for dumbbell or the like |
| CN102531419A (en) * | 2012-01-04 | 2012-07-04 | 浙江大学宁波理工学院 | Steel slag activation method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101396843A (en) * | 2007-09-27 | 2009-04-01 | 张金宝 | Processing method of dumbbell, disc for dumbbell or the like |
| CN102531419A (en) * | 2012-01-04 | 2012-07-04 | 浙江大学宁波理工学院 | Steel slag activation method |
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