CN115679023A - Steel slag activity excitant and preparation method thereof - Google Patents
Steel slag activity excitant and preparation method thereof Download PDFInfo
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- CN115679023A CN115679023A CN202211287956.5A CN202211287956A CN115679023A CN 115679023 A CN115679023 A CN 115679023A CN 202211287956 A CN202211287956 A CN 202211287956A CN 115679023 A CN115679023 A CN 115679023A
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Abstract
The invention relates to the technical field of metallurgical slag, in particular to a steel slag activity excitant and a preparation method thereof, and the steel slag activity excitant comprises an excitant for exciting the activity of chemical components of steel slag and an excitant for exciting the activity of vitreous bodies in the slag, wherein the vitreous bodies in the slag account for about 90%, the proportion of the excitant for exciting the activity of the chemical components of the steel slag to the excitant for exciting the activity of vitreous bodies in the slag is 1.5.
Description
Technical Field
The invention relates to the technical field of metallurgical slag, in particular to a steel slag activity excitant and a preparation method thereof.
Background
A by-product of the steel making process. It is composed of various oxides formed by oxidizing impurities in pig iron, such as silicon, manganese, phosphorus, sulfur, etc. in the smelting process, and salts generated by the reaction of these oxides and solvent. Steel slag contains a plurality of useful components: 2 to 8 percent of metallic iron, 40 to 60 percent of calcium oxide, 3 to 10 percent of magnesium oxide and 1 to 8 percent of manganese oxide, so the iron-manganese composite material can be used as a ferrous metallurgy raw material.
The existing steel slag activator can excite the activity of the steel slag step by step, and the excitation mode can stably excite the activity of the steel slag, but has lower excitation efficiency and speed on the steel slag.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a steel slag activity excitant and a preparation method thereof.
In order to solve the technical problems, the invention provides the following technical scheme: a steel slag activity excitant comprises an excitant for exciting the activity of chemical components of steel slag and an excitant for exciting the activity of vitreous bodies in the slag, wherein the vitreous bodies in the slag account for about 90 percent, the proportion of the excitant for exciting the activity of the chemical components of the steel slag to the excitant for exciting the activity of the vitreous bodies in the slag is 1.5 to 1, the excitant for exciting the chemical activity in the slag comprises triethanolamine and glycerol, and the rest of the excitant comprises aluminum sulfate solution, pulp waste liquid and other components, and the excitant for exciting the activity of the vitreous components of the steel slag comprises water glass, sodium hydroxide, potassium carbonate, pulp waste liquid and other components.
As a preferable technical scheme of the invention, the exciting agent for exciting the activity of the steel slag vitreous body component comprises 20% of water glass, 20% of sodium hydroxide, 20% of potassium carbonate, 40% of pulp waste liquid and the like, and the mixing amount of the exciting agent for exciting the activity of the steel slag vitreous body component is 0.04-0.06% of the mass of slag.
As a preferred technical scheme of the invention, the exciting agent for exciting the chemical activity in the slag comprises 20 percent of triethanolamine, 20 percent of glycerol, 15 percent of aluminum sulfate solution, 45 percent of pulp waste liquid and the like, and the mixing amount of the exciting agent for exciting the chemical activity in the slag is 0.04 to 0.08 percent of the mass of the slag.
A preparation method of a steel slag active excitant comprises the following steps:
the first step is as follows: detecting the property of the steel slag, mixing the steel slag with the main excitant and the auxiliary excitant to realize the excitation process.
The second step is that: and (3) treating the steel slag after the reaction, allowing the reaction liquid to leave the steel slag, and drying the steel slag.
The third step: and (3) treating the activated steel slag, and carrying out furnace returning on the steel slag or preparing the steel slag into a finished product material.
The activity of the steel slag is excited by adopting a physical excitation mode, namely, the steel slag is ground by a slag grinding aid, the crystal structure in the steel slag is irregular, multiphase crystal form transformation is generated, lattice defects are generated, the specific surface area is increased, the surface energy is increased, and the like, so that the thermodynamic property, the crystallographic property, the physicochemical property and the like of materials are regularly changed, new activation points are generated on the particle surface along with the change of grinding time, the slag powder is easy to uniformly disperse in an alkaline aqueous solution, OH-ions enter the slag to generate hydration reaction, strong mechanical impact, shearing and grinding effects and mutual extrusion and collision effects among particles can promote the depolymerization of slag vitreous body to a certain degree, the split-phase structure in the vitreous body can be obtained to a certain degree, the exciting agent for exciting the chemical activity in the slag comprises 20% of triethanolamine and 20% of glycerol, the rest 15% of aluminum sulfate solution and 45% of waste liquid of pulp, the 3d strength of slag cement can be improved by 2-3 MPa, the exciting amount of the exciting agent in the slag is 0.04-0.08% of the arc-shaped exciting agent of the steel slag, and the exciting agent has a small chemical reaction effect due to the slag cement.
The slag excitant has the main effects of (1) promoting the disintegration of slag; (2) the formation of stable hydration products is facilitated; (3) the slag glass is characterized in that the slag glass is formed into a hydrate network structure, the exciting agent for exciting the activity of the components of the slag glass comprises 20% of water glass, 20% of sodium hydroxide, 20% of potassium carbonate, 40% of pulp waste liquid and the like, the mixing amount of the exciting agent for exciting the activity of the components of the slag glass is 0.04-0.06% of the mass of the slag, the potassium carbonate and the slag are mixed for pretreatment, after the potassium carbonate is discharged, the potassium carbonate contains FeCl3, al2 (SO 4) 3, alCl3, fe2 (SO 4) 3, H2SiO3 and other components, the components are hydrolyzed to form a plurality of complex multi-core complexes, the complexes are continuously condensed to form high-charge and high-molecular polymers, special chemical adsorption and bridging effects are formed between the polymers and hydrophilic colloids, the adsorption of colloid substances suspended in water is facilitated, the water glass breaks down the silica network structure to form slag crystals, the glass body is decomposed to participate in the hydration reaction of a base material, sodium hydroxide and silica gel are generated after the water glass is hydrolyzed, the sodium hydroxide can improve the pH value of a hydration liquid phase glass, the silica network is rapidly dissociated, the hydration reaction is accelerated, and the hydration strength of the slag is further improved, and the early hydration strength of the slag is further improved.
The activator for exciting the activity of the components of the steel slag vitreous body is a main activator, and the activator for exciting the chemical activity in the slag is an auxiliary activator, and the activator and the auxiliary activator are matched and react with the steel slag to realize the activation of the steel slag, so the treatment effect of the steel slag is improved and the activation effect of the steel slag is improved.
After the steel slag is reacted, suspending the steel slag, so that the activator of the reaction leaves the steel slag, preventing the steel slag from being excessively excited, and after the steel slag is suspended, recycling the reaction liquid, detecting the reaction liquid, and treating the reaction liquid for secondary utilization.
After the reaction, the activity of the reaction slag is excited, and the reaction slag is used as a smelting solvent to be recycled in a factory, so that the reaction slag not only can replace limestone, but also can recover a large amount of metallic iron and other useful elements, the activated steel slag is convenient to treat, and the recovery effect of the steel slag is improved.
Compared with the prior art, the invention can achieve the following beneficial effects:
1. the activator for exciting the activity of the components of the steel slag vitreous body is a main activator, and the activator for exciting the chemical activity in the slag is an auxiliary activator, and the activator and the auxiliary activator are matched and react with the steel slag to realize the activation of the steel slag, so the treatment effect of the steel slag is improved and the activation effect of the steel slag is improved.
2. After the steel slag is reacted, suspending the steel slag, so that the activator of the reaction leaves the steel slag, preventing the steel slag from being excessively excited, and after the steel slag is suspended, recycling the reaction liquid, detecting the reaction liquid, and treating the reaction liquid for secondary utilization.
3. After the reaction, the activity of the reaction slag is excited, and the reaction slag is used as a smelting solvent to be recycled in a factory, so that the reaction slag not only can replace limestone, but also can recover a large amount of metallic iron and other useful elements, the activated steel slag is convenient to treat, and the recovery effect of the steel slag is improved.
4. Sodium hydroxide and hydrated silica gel are generated after the water glass is hydrolyzed, the sodium hydroxide can improve the pH value of a hydrated liquid phase, so that a vitreous silica network in slag is rapidly dissociated, the hydration reaction is accelerated, the hydration reaction is further improved by additionally adding the sodium hydroxide, the strength of a gelling system is increased, and the early strength of the steel slag is improved.
5. The mixing amount of the excitant for exciting the chemical activity in the slag is 0.04-0.08 percent of the mass of the slag, the reaction effect with the steel slag is better, and the excitant for exciting the chemical component activity of the steel slag is an auxiliary excitant because the arc-shaped component in the steel slag is smaller, so that the activation effect of the steel slag can be better improved.
Drawings
FIG. 1 is a topological diagram of the operation of the present invention.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the implementation belong to the protection scope of the invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The embodiment is as follows:
as shown in fig. 1, the steel slag activating agent comprises an activator for activating chemical components of steel slag and an activator for activating vitreous body in the slag, the vitreous body accounts for about 90%, the ratio of the activator for activating chemical components of steel slag to the activator for activating vitreous body in the slag is 1.5.
The exciting agent for exciting the activity of the components of the steel slag vitreous body comprises 20 percent of water glass, 20 percent of sodium hydroxide, 20 percent of potassium carbonate, 40 percent of pulp waste liquid and the like, and the mixing amount of the exciting agent for exciting the activity of the components of the steel slag vitreous body is 0.04 to 0.06 percent of the mass of slag.
The exciting agent for exciting the chemical activity in the slag comprises 20 percent of triethanolamine and 20 percent of glycerol, and the balance of components such as 15 percent of aluminum sulfate solution, 45 percent of pulp waste liquid and the like, and the mixing amount of the exciting agent for exciting the chemical activity in the slag is 0.04 to 0.08 percent of the mass of the slag.
A preparation method of a steel slag active excitant comprises the following steps:
the first step is as follows: detecting the property of the steel slag, mixing the steel slag with the main excitant and the auxiliary excitant to realize the excitation process.
The second step is that: and treating the reacted steel slag, allowing the reaction liquid to leave the steel slag, and drying the steel slag.
The third step: the activated steel slag is treated and then is melted back or made into finished products.
The activity of the steel slag is excited by adopting a physical excitation mode, namely, the steel slag is ground by a slag grinding aid, the crystal structure in the steel slag is irregular, multiphase crystal form transformation is generated, lattice defects are generated, the specific surface area is increased, the surface energy is increased, and the like, so that the thermodynamic property, the crystallographic property, the physicochemical property and the like of materials are regularly changed, new activation points are generated on the particle surface along with the change of grinding time, the slag powder is easy to uniformly disperse in an alkaline aqueous solution, OH-ions enter the slag to generate hydration reaction, strong mechanical impact, shearing and grinding effects and mutual extrusion and collision effects among particles can promote the depolymerization of slag vitreous body to a certain degree, the split-phase structure in the vitreous body can be obtained to a certain degree, the exciting agent for exciting the chemical activity in the slag comprises 20% of triethanolamine and 20% of glycerol, the rest 15% of aluminum sulfate solution and 45% of waste liquid of pulp, the 3d strength of slag cement can be improved by 2-3 MPa, the exciting amount of the exciting agent in the slag is 0.04-0.08% of the arc-shaped exciting agent of the steel slag, and the exciting agent has a small chemical reaction effect due to the slag cement.
The slag excitant has the main effects of (1) promoting the disintegration of slag; (2) the formation of stable hydration products is facilitated; (3) the slag-silica gel activator is characterized in that the slag-silica gel activator is formed by 20% of sodium silicate, 20% of sodium hydroxide, 20% of potassium carbonate and 40% of pulp waste liquid, the amount of the slag-silica gel activator is 0.04-0.06% of the mass of slag, the potassium carbonate and the slag are mixed for pretreatment, and after the potassium carbonate is discharged, the potassium carbonate contains FeCl3, al2 (SO 4) 3, alCl3, fe2 (SO 4) 3, H2SiO3 and other components, and the components are hydrolyzed to form a plurality of complex multi-core complexes which are continuously condensed to form high-charge and high-molecular polymers.
The activator for exciting the activity of the components of the steel slag vitreous body is a main activator, and the activator for exciting the chemical activity in the slag is an auxiliary activator, and the activator and the auxiliary activator are matched and react with the steel slag to realize the activation of the steel slag, so the treatment effect of the steel slag is improved and the activation effect of the steel slag is improved.
After the steel slag is reacted, suspending the steel slag, so that the activator of the reaction leaves the steel slag, preventing the steel slag from being excessively excited, and after the steel slag is suspended, recycling the reaction liquid, detecting the reaction liquid, and treating the reaction liquid for secondary utilization.
After the reaction, the activity of the reaction slag is excited, and the reaction slag is used as a smelting solvent to be recycled in a factory, so that the reaction slag not only can replace limestone, but also can recover a large amount of metallic iron and other useful elements, the activated steel slag is convenient to treat, and the recovery effect of the steel slag is improved.
The working principle is as follows:
the first step is as follows: the activity of the steel slag is excited by adopting a physical excitation mode, namely, the steel slag is ground by a slag grinding aid, the crystal structure in the steel slag is irregular, multiphase crystal form transformation is generated, lattice defects are generated, the specific surface area is increased, the surface energy is increased, and the like, so that the thermodynamic property, the crystallographic property, the physicochemical property and the like of materials are regularly changed, new activation points are generated on the particle surface along with the change of grinding time, the slag powder is easy to uniformly disperse in an alkaline aqueous solution, OH-ions enter the slag to generate hydration reaction, strong mechanical impact, shearing and grinding effects and mutual extrusion and collision effects among particles can promote the depolymerization of slag vitreous body to a certain degree, the split-phase structure in the vitreous body can be obtained to a certain degree, the exciting agent for exciting the chemical activity in the slag comprises 20% of triethanolamine and 20% of glycerol, the rest 15% of aluminum sulfate solution and 45% of waste liquid of pulp, the 3d strength of slag cement can be improved by 2-3 MPa, the exciting amount of the exciting agent in the slag is 0.04-0.08% of the arc-shaped exciting agent of the steel slag, and the exciting agent has a small chemical reaction effect due to the slag cement.
The second step is that: the slag excitant has the main effects of (1) promoting the disintegration of slag; (2) the formation of stable hydration products is facilitated; (3) the slag-silica gel activator is characterized in that the slag-silica gel activator is formed by 20% of sodium silicate, 20% of sodium hydroxide, 20% of potassium carbonate and 40% of pulp waste liquid, the amount of the slag-silica gel activator is 0.04-0.06% of the mass of slag, the potassium carbonate and the slag are mixed for pretreatment, and after the potassium carbonate is discharged, the potassium carbonate contains FeCl3, al2 (SO 4) 3, alCl3, fe2 (SO 4) 3, H2SiO3 and other components, and the components are hydrolyzed to form a plurality of complex multi-core complexes which are continuously condensed to form high-charge and high-molecular polymers.
The third step: the activator for exciting the activity of the components of the steel slag vitreous body is a main activator, and the activator for exciting the chemical activity in the slag is an auxiliary activator, and the activator and the auxiliary activator are matched and react with the steel slag to realize the activation of the steel slag, so the treatment effect of the steel slag is improved and the activation effect of the steel slag is improved.
The fourth step: after the steel slag is reacted, suspending the steel slag, so that the activator of the reaction leaves the steel slag, preventing the steel slag from being excessively excited, and after the steel slag is suspended, recycling the reaction liquid, detecting the reaction liquid, and treating the reaction liquid for secondary utilization.
The fifth step: after the reaction, the activity of the reaction slag is excited, and the reaction slag is used as a smelting solvent to be recycled in a factory, so that the reaction slag not only can replace limestone, but also can recover a large amount of metallic iron and other useful elements, the activated steel slag is convenient to treat, and the recovery effect of the steel slag is improved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The steel slag activity excitant is characterized by comprising an excitant for exciting the activity of chemical components of steel slag and an excitant for exciting the activity of vitreous bodies in the slag, wherein the vitreous bodies in the slag account for about 90 percent, the proportion of the excitant for exciting the activity of the chemical components of the steel slag to the excitant for exciting the activity of the vitreous bodies in the slag is 1.5 to 1, the excitant for exciting the chemical activity in the slag comprises triethanolamine and glycerol, the rest components comprise aluminum sulfate solution, pulp waste liquid and the like, and the excitant for exciting the activity of the vitreous components of the steel slag comprises water glass, sodium hydroxide, potassium carbonate, pulp waste liquid and the like.
2. The steel slag activator according to claim 1, wherein the activator for activating the glass components of steel slag comprises 20% of water glass, 20% of sodium hydroxide, 20% of potassium carbonate and 40% of pulp waste liquid.
3. The steel slag activity excitant and the preparation method thereof as claimed in claim 2, wherein the amount of the excitant for exciting the activity of the glass component of the steel slag is 0.04-0.06% of the mass of the slag.
4. The steel slag activity excitant as claimed in claim 1, wherein the chemical excitant for exciting slag consists of triethanolamine 20% and glycerin 20%, and further contains 15% aluminum sulfate solution and 45% waste pulp liquid.
5. The steel slag activity excitant of claim 4, wherein the amount of the excitant for exciting the chemical activity in the slag is 0.04-0.08% of the mass of the slag.
6. A method for preparing a steel slag activator, comprising the steel slag activator according to any one of claims 1 to 5, comprising the steps of:
the first step is as follows: detecting the property of the steel slag, mixing the steel slag with the main excitant and the auxiliary excitant to realize the excitation process.
The second step is that: and treating the reacted steel slag, allowing the reaction liquid to leave the steel slag, and drying the steel slag.
The third step: and (3) treating the activated steel slag, and carrying out furnace returning on the steel slag or preparing the steel slag into a finished product material.
7. The method for preparing the steel slag activity excitant according to claim 6, wherein the activity of the steel slag is excited by adopting a physical excitation mode, namely, the steel slag is ground by the slag grinding aid, so that the crystal structure in the steel slag is irregular and multiphase crystal form transformation is generated, lattice defects are generated, the specific surface area is increased, the surface energy is increased and the like, the thermodynamic property, the crystallographic property, the physicochemical property and the like of the materials are regularly changed along with the grinding time, new activation points are generated on the surfaces of particles along with the grinding time, the slag powder is easy to uniformly disperse in an alkaline aqueous solution, OH-ions enter the slag to generate hydration reaction, strong mechanical impact, shearing and grinding action and mutual extrusion and collision action among the particles can promote the slag vitreous body to generate depolymerization to a certain degree, the phase separation structure in the vitreous body is homogenized to a certain degree, the group of the excitant with chemical activity in the slag is composed of 20% of triethanolamine and 20% of glycerol, the rest is 15% of pulp solution and 45% of components such as pulp, the excitation strength of the slag cement in the slag can be improved by 3d to 3-3.08%, and the excitation effect of the slag cement in the slag.
8. The method for preparing the steel slag activity excitant according to claim 7, wherein the slag excitant has three main functions of (1) promoting the disintegration of slag; (2) the formation of stable hydration products is facilitated; (3) the forming of hydrate network structure is facilitated, the exciting agent for exciting the activity of the components of the steel slag glass body consists of 20% of water glass, 20% of sodium hydroxide, 20% of potassium carbonate, 40% of pulp waste liquid and the like, the mixing amount of the exciting agent for exciting the activity of the components of the steel slag glass body is 0.04% -0.06% of the mass of the slag, the potassium carbonate and the slag are mixed for pretreatment, after the potassium carbonate is discharged, the potassium carbonate contains FeCl3, al2 (SO 4) 3, alCl3, fe2 (SO 4) 3, H2SiO3 and other components, the components are hydrolyzed to form a plurality of complex multi-core complexes, the complexes are continuously condensed to form high-charge and high-molecular polymers, special chemical adsorption and bridging effects are formed between the polymers and hydrophilic colloids, the adsorption of colloid substances suspended in water is facilitated, the water glass together damage to the silica network structure is slag crystals, the glass body is decomposed, the sodium hydroxide and the hydrated reaction of a base material is participated, the sodium hydroxide and the hydrated silica gel are generated after the water glass is hydrolyzed, the sodium hydroxide can improve the pH value of a hydrated liquid phase glass, SO that the silica network is rapidly dissociated, the hydrated reaction is accelerated, and the hydrated reaction is further improved.
9. The method of claim 8, wherein the activator for activating the glass components of the steel slag is a primary activator, the activator for activating the chemical activity in the slag is an auxiliary activator, and the primary activator and the auxiliary activator are combined to react with the steel slag to activate the steel slag, so that the treatment effect and the activation effect of the steel slag are improved.
10. The method of claim 9, wherein the steel slag is suspended after the reaction of the steel slag, and the activator is separated from the steel slag to prevent over-activation of the steel slag, and the reaction solution is recycled after the suspension of the steel slag, and the activity of the reaction slag is activated after the reaction, and the reaction slag is recycled as a smelting solvent in a factory, so that the steel slag can be used as a substitute for limestone, and a large amount of metallic iron and other useful elements can be recycled from the steel slag.
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| CN101717837A (en) * | 2009-12-19 | 2010-06-02 | 中北大学 | Chemical activation liquid of converter slag and application method thereof |
| CN109053024A (en) * | 2018-08-25 | 2018-12-21 | 广州吉前化工有限公司 | A kind of slag grinding aid and preparation method thereof |
-
2022
- 2022-10-20 CN CN202211287956.5A patent/CN115679023A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996034989A1 (en) * | 1995-05-02 | 1996-11-07 | Holderbank Financière Glarus Ag | Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium |
| CN101209908A (en) * | 2007-12-25 | 2008-07-02 | 大连理工大学 | Liquid high-efficiency cement grinding aid reinforcing agent and producing method thereof |
| CN101717837A (en) * | 2009-12-19 | 2010-06-02 | 中北大学 | Chemical activation liquid of converter slag and application method thereof |
| CN109053024A (en) * | 2018-08-25 | 2018-12-21 | 广州吉前化工有限公司 | A kind of slag grinding aid and preparation method thereof |
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| Title |
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| 王樾;张伟;: "矿渣的活性激发剂", 江苏建材, no. 04, pages 19 - 22 * |
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