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CN116177917A - Electrolytic manganese slag treatment method and active micro powder material - Google Patents

Electrolytic manganese slag treatment method and active micro powder material Download PDF

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CN116177917A
CN116177917A CN202310467901.0A CN202310467901A CN116177917A CN 116177917 A CN116177917 A CN 116177917A CN 202310467901 A CN202310467901 A CN 202310467901A CN 116177917 A CN116177917 A CN 116177917A
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slag
electrolytic manganese
treatment
manganese slag
glass
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CN116177917B (en
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代文彬
陈曦
祁永峰
陈学刚
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China ENFI Engineering Corp
China Nonferrous Metals Engineering Co Ltd
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China ENFI Engineering Corp
China Nonferrous Metals Engineering Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001Dry processes
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/69Sulfur trioxide; Sulfuric acid
    • C01B17/74Preparation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • C04B40/0042Powdery mixtures

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  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract

The invention provides a treatment method of electrolytic manganese slag and an active micro powder material. The processing method comprises the following steps: and adding a modifier and a regulator into the electrolytic manganese slag for smelting to obtain flue gas and slag. And carrying out quenching treatment on the slag to obtain glass slag. And carrying out magnetic separation treatment on the glass slag to obtain metallic iron and iron-removing glass slag. Mixing the deironing glass slag and the activity excitant in hot flue gas atmosphere to perform grinding treatment, thus obtaining the active micro powder material. Wherein, the modifier is one or more of quicklime, limestone, dolomite, industrial by-product gypsum, steel slag, quartz or tailings; the regulator is one or more of fluorite, sodium carbonate, potassium carbonate or sodium bicarbonate. Based on the method, the electrolytic manganese slag can be fully utilized, the added value of manganese slag products is higher, the market consumption is larger, and the treatment process flow is shorter.

Description

Electrolytic manganese slag treatment method and active micro powder material
Technical Field
The invention relates to the field of electrolytic manganese slag, in particular to a treatment method of electrolytic manganese slag and an active micro powder material.
Background
The electrolytic (leached) manganese slag is industrial slag which is discharged by taking manganese ore as a raw material, grinding the manganese ore, leaching the manganese ore with sulfuric acid solution, and then carrying out filter pressing and water draining, wherein the water content of the industrial slag is generally about 20%. The electrolytic manganese slag is a fine-particle black brown solid waste, is acidic or weak acid and has a density of 2-3 g/cm 3 Between them. After the water is directly discharged, the water content is higher due to the storage of rainwater, and the water is in a pasty state. The air-dried electrolytic manganese slag particles can be clustered together, and have certain mud plasticity. According to different ore grades and production processes, the amount of the discharged manganese slag is 6-9 tons on average per 1 ton of electrolytic manganese metal produced, so that the yield of the electrolytic manganese slag is high, and a large amount of land resources are occupied. In addition, the electrolytic manganese slag contains soluble sulfate, heavy metal, residual acid and other toxic and harmful substances, and serious ecological influence is caused on local and peripheral soil and groundwater, so that harmless and recycling treatment of the electrolytic manganese slag is a trend at present.
At present, because electrolytic manganese slag contains high sulfate such as calcium sulfate, manganese sulfate, ferric sulfate and the like, most of the prior art mainly uses the electrolytic manganese slag to replace gypsum to manufacture cement retarder, produce cement concrete, wall materials and other building materials. The invention patent CN110467365A uses electrolytic manganese slag to prepare cement, the CN108585721A uses electrolytic manganese slag and steel slag tailing mud to produce autoclaved aerated blocks, and the CN109482624A uses electrolytic manganese slag to produce sintered lightweight aggregate and the like.
Of course, besides being used for manufacturing building materials, the electrolytic manganese slag also has the characteristic of high sulfur element in the manganese slag in the prior art, industrial sulfuric acid is prepared through high-temperature calcination or roasting treatment, such as the patent CN105217580B and the patent CN110482612A, the recycling of the sulfur element in the manganese slag is realized, and the added value of the product is higher. However, due to the characteristics of low activity of the mixed material after high-temperature calcination or roasting treatment, high residual sulfur content and the like, the mixing amount of the mixed material in cement is still low, the product value is low, and the process economy is poor.
In addition, aiming at the characteristic that the manganese slag is rich in iron and manganese elements, a roasting and magnetic separation process is adopted to separate metal oxides in the manganese slag, such as patent CN106755950B. Besides, manganese ore is added to prepare ferromanganese alloy in an electric furnace smelting mode, such as patent CN 105624438B, and recovery of valuable metal elements in electrolytic manganese slag is realized.
To sum up, the prior art processes electrolytic manganese slag, which is mainly developed and extracted for a certain valuable component (such as iron, manganese, sulfur, ammonia, etc.) of electrolytic manganese slag, and finally the residual low-value components (main components are CaO and SiO) 2 、Al 2 O 3 MgO, etc.) for use in building materials. The field focuses on the aspect of valuable component extraction, the development of the value of the residual components is often focused on the defect of insufficient research, so that the residual components are mostly directly used as low-value building materials for application, the added value of the product is very low, the market competitiveness is insufficient, and policy subsidy is often required to help to be barely generated. In addition, domestic electrolytic manganese enterprises are mostly concentrated in southwest areas such as Yun Guian and the like with rich manganese ores, and have more mountainous regions, less plain and inconvenient traffic. The residual low-value components after simple development and extraction cannot be widely applied to building material raw materials in each row, the sales range and market consumption of products are affected, and the economic income is also insufficient.
Therefore, it is necessary to provide a new electrolytic manganese slag treatment method, especially for electrolytic manganese slag after extracting valuable components such as sulfur, iron and the like, so that the electrolytic manganese slag can be fully recycled, and recycling is better.
Disclosure of Invention
The invention mainly aims to provide a treatment method of electrolytic manganese slag and an active micro powder material, which are used for solving the problem that the electrolytic manganese slag with extracted valuable components cannot be effectively utilized in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method for treating electrolytic manganese slag, comprising the steps of: adding a modifier and a regulator into electrolytic manganese slag to perform smelting at 1300-1450 ℃ to obtain flue gas and slag; the flue gas is used for preparing acid; quenching the slag to obtain glass slag; carrying out magnetic separation treatment on the glass slag to obtain iron-removing glass slag; mixing the deironing glass slag and the active exciting agent in hot flue gas atmosphere to perform drying and grinding treatment to obtain an active micro powder material; wherein, the modifier is one or more of quicklime, limestone, dolomite, industrial by-product gypsum, steel slag, quartz or tailings; the regulator is one or more of fluorite, sodium carbonate, potassium carbonate or sodium bicarbonate.
Further, the slag comprises the following components: caO 22-45wt%, siO 2 26~52wt%,Al 2 O 3 3-10wt% of MgO, 1-9wt% of FeO, 0.2-2wt% of MnO, 1-5wt% of MnO and the balance of impurities; preferably, the electrolytic manganese slag comprises the following components: caO 3-16wt%, siO 2 20~40wt%,Al 2 O 3 1~3wt%,MgO 1~3wt%,Fe 2 O 3 5~12wt%,MnO 4~11wt%、SO 3 28-33 wt% and the balance of impurities.
Further, the weight ratio of the modifier to the slag is (10-35): 100; preferably, the weight ratio of the regulator to the slag is (1-5): 100.
further, the weight ratio of the iron-removing glass slag to the activity excitant is 100: (5-20); preferably, the active excitant comprises a main material, auxiliary materials and an enhancer; the main materials are untreated electrolytic manganese slag and/or electrolytic manganese slag after low-temperature roasting treatment; preferably, the temperature of the low-temperature roasting treatment is 300-500 ℃; one or more of quicklime, limestone, calcined dolomite, volcanic ash, clinker or industrial gypsum as auxiliary materials; the reinforcing agent is one or more of caustic alkali, sodium carbonate, calcium sulfate, sodium silicate or sodium sulfate.
Further, the weight ratio of the main materials to the auxiliary materials to the reinforcing agents is (65-90): (10-25): (1-8).
Further, the temperature of the slag is 1250-1400 ℃, the slag is cooled to 300-500 ℃ within 2-8 s, and quenching treatment is completed.
Further, in the process of drying and grinding, the treatment temperature is 110-160 ℃ and the treatment time is 1-3 h.
Further, the raw materials in the process of drying and grinding treatment also comprise grinding aids; preferably, the grinding aid is one or more of triethanolamine, fly ash, industrial salt, triisopropanolamine, ethylene glycol, propylene glycol, glycerol, sodium fatty acid, calcium chloride, sodium acetate, aluminum sulfate, calcium formate, wood calcium or wood sodium; the consumption of the grinding aid is preferably 0.02-1% of the weight of the iron glass slag; preferably, the grinding treatment is carried out in a ball mill, a vertical mill or a roller mill.
In order to achieve the above object, according to one aspect of the present invention, there is provided an active fine powder material obtained by the aforementioned electrolytic manganese slag treatment method.
Further, the specific surface area of the active micro powder material is more than or equal to 350m 2 /kg。
Based on the method, the electrolytic manganese slag can be fully utilized, and the developed manganese slag products such as metallic iron, active micro powder and the like have higher added value, larger market consumption and shorter treatment process flow. Particularly, based on the treatment method, the harmless, reduction and recycling treatment of the electrolytic manganese slag can be realized more effectively, the potential utilization value of the manganese slag is fully excavated, and the characteristics of different properties of the electrolytic manganese slag before and after calcination are fully utilized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 shows a schematic flow chart of a method for treating electrolytic manganese slag in an embodiment of the invention.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
As described in the background and part of the invention, the prior art has the problem that the electrolytic manganese slag after extracting valuable components cannot be effectively utilized. In order to solve the problem, the invention provides a treatment method of electrolytic manganese slag, as shown in fig. 1, comprising the following steps: adding a modifier and a regulator into electrolytic manganese slag for smelting (the modification deconstructing treatment is realized in a smelting mode, namely, the chemical components and the mineral phase composition of the original electrolytic manganese slag are changed), so as to obtain flue gas and slag. Wherein the flue gas is used for preparing acid. And carrying out quenching treatment on the slag to obtain glass slag. And carrying out magnetic separation treatment on the glass slag to obtain metallic iron and iron-removing glass slag. Mixing the deironing glass slag and the activity excitant in hot flue gas atmosphere to perform drying and grinding treatment to obtain the active micro powder material. Wherein, the modifier is one or more of quicklime, limestone, dolomite, industrial by-product gypsum, steel slag, quartz or tailings; the regulator is one or more of fluorite, sodium carbonate, potassium carbonate or sodium bicarbonate.
The electrolytic manganese slag disclosed by the invention is molten electrolytic manganese slag subjected to melting treatment (1250-1400 ℃), wherein valuable metal elements (such as iron and manganese), sulfur-containing compounds (such as calcium sulfate) and water are separated, and the residual main components are calcium oxide, silicon oxide, aluminum oxide, magnesium oxide and the like. According to the invention, the electrolytic manganese slag, the modifier and the regulator are mixed to carry out modification and deconstruction treatment at 1300-1450 ℃ so as to obtain slag and flue gas (the flue gas is sent to an acid making system to prepare concentrated sulfuric acid and the like). And then quenching the slag to obtain glass slag (amorphous). And then carrying out magnetic separation treatment on the glass slag so as to further remove metal iron mixed in the glass slag and obtain the iron-removing glass slag. Finally, the deironing glass slag and the activity excitant are mixed in hot flue gas atmosphere to carry out grinding treatment, so that the materials can be ground while being dried, and the active micro powder material is obtained efficiently. Wherein, the modifier is one or more of fluorite, sodium carbonate, potassium carbonate or sodium bicarbonate, which can further reduce the viscosity of slag on the basis of better fluxing property. The modifier is one or more of quicklime, limestone, dolomite, industrial by-product gypsum, steel slag, quartz or tailings, and can further effectively reduce the connection degree of silicon-oxygen and aluminum-oxygen networks in the slag. The smelting temperature is lower than 1300 ℃, and the activity index of the obtained micro powder material is lower in the subsequent application process; the application performance of the micro powder material is not increased in a breakthrough way when the temperature is higher than 1450 ℃, but the damage of the kiln refractory is promoted to be quicker, the energy consumption is higher, the overall cost is higher, and the economical efficiency is poorer.
The active micro powder material obtained by the treatment method can change the chemical components and the mineral phase composition of the original electrolytic manganese slag (the raw slag has poor hydration activity), has excellent potential hydration activity (the potential hydration activity is that the material can generate complex hydration reaction under the alkaline solution environment to generate hydration products with cementing property), can be directly used as an active admixture for being sold to production enterprises such as concrete, cement products and the like, has excellent hydration activity under corresponding conditions (such as alkaline conditions), replaces partial cement raw materials to be used, and reduces the cost.
In a word, the invention can fully utilize the electrolytic manganese slag, the added value of the manganese slag product is higher, the market consumption is larger, and the treatment process flow is shorter. In particular, based on the treatment method, the harmless, reduction and recycling treatment of the electrolytic manganese slag can be realized more effectively, and the characteristics of different properties of the electrolytic manganese slag before and after calcination are fully utilized.
In an alternative embodiment, the glass slag is subjected to a magnetic separation treatment by passing it through a magnetic separation drum or other iron removal device, on the basis of which the metals entrained in the glass slag can be ferromagnetically separated and sold as iron raw material.
The electrolytic manganese slag disclosed by the invention is molten electrolytic manganese slag subjected to melting treatment (1250-1400 ℃), wherein valuable metal elements (such as iron and manganese), sulfur-containing compounds (such as calcium sulfate) and water are separated, and the residual main components are calcium oxide, silicon oxide, aluminum oxide, magnesium oxide and the like. Specifically, the electrolytic manganese slag comprises the following components: caO 3-16wt%, siO 2 20~40wt%,Al 2 O 3 1~3wt%,MgO 1~3wt%,Fe 2 O 3 5~12wt%,MnO 4~11wt%、SO 3 28 to 33wt% and the balance of impurities (e.g. NaO) 2 、K 2 O、BaO、P 2 O 5 NH and NH 4+ Etc.). The mineral phase composition of the electrolytic manganese slag is as follows: quartz, gypsum, iron vitriol, hematite, feldspar, mica, calcite, chlorite, and the like.
In a preferred embodiment, the slag comprises the following components: caO 22-45wt%, siO 2 26~52wt%,Al 2 O 3 3-10wt% of MgO, 1-9wt% of FeO, 0.2-2wt% of MnO, 1-5wt% of MnO and the balance of impurities. The mineral phase of the slag is mainly a glassy phase. In order to further improve the effect of the modification and deconstruction treatment, the weight ratio of the modifier to the slag is preferably (10 to 35): 100, which may be, for example, 10:100, 15:100, 20:100, 25:100, 30:100 or 35:100; the weight ratio of the regulator to the slag is (1-5): 100, for example, may be 1:100, 2:100, 3:100, 4:100, or 5:100. Based on the method, the synergistic effect of the modifier and the regulator is better, so that the reagent and the electrolytic manganese slag can be promoted to fully react, the effect of modification and deconstruction treatment can be promoted to be better, more electrolytic manganese slag can be subjected to effective treatment, and the performance of the subsequently obtained active micro powder material is better. Wherein, the micro powder material with excellent activity can not be obtained by too little modifier; and too much amount of the catalyst has larger influence on the physical and chemical properties of the slag, so that the melting temperature and the viscosity of the slag are increased, and the temperature is required to be increased, which brings about problems caused by the temperature increase, and has poorer cost and economy.
In a preferred embodiment, the active activator comprises a main ingredient, an auxiliary ingredient and a reinforcing agent. The main materials are untreated electrolytic manganese slag and/or electrolytic manganese slag after low-temperature roasting treatment; the temperature of the low-temperature roasting treatment is preferably 300-500 ℃. Based on the method, the treatment method not only adopts a modification and activation process route which takes molten electrolytic manganese slag as a main body cementing material, but also adopts a manganese slag double-main-body utilization route which takes electrolytic manganese slag which is in an original state or is subjected to low-temperature roasting and activation treatment as a main body activity excitant, fully utilizes the performance characteristics of the manganese slag at different temperatures, improves the comprehensive resource utilization rate of the manganese slag, develops a novel manganese slag-based activity excitant which takes the manganese slag as the main body material of the activity excitant, can effectively improve the potential activity of the molten manganese slag, and reduces the manufacturing cost of the activity excitant material.
In order to further increase the excitation effect of the activity excitant, one or more of quicklime, limestone, calcined dolomite, volcanic ash, clinker or industrial gypsum (for example, industrial solid waste such as industrial byproduct gypsum) is preferably selected as auxiliary materials; preferably the strengthening agent is one or more of caustic, sodium carbonate, calcium sulphate, sodium silicate or sodium sulphate. Based on the above, the main materials, auxiliary materials and the reinforcing agent have better synergistic effect. Further preferably, the weight ratio of the main material to the auxiliary material to the reinforcing agent is (65-90): (10-25): (1-8), for example, may be 65:10:1, 70:12:2, 75:14:3, 80:15:4, 85:20:6, or 90:25:8.
In a preferred embodiment, the weight ratio of the iron-removing glass slag to the activity excitant is 100: (5-20), for example, may be 100:5, 100:10, 100:15 or 100:20. Based on the method, the excitation effect of the iron-removing glass slag is better, so that the activity of the active micro powder material is better, and the utilization value is higher.
In order to further improve the morphological effect of the glass slag, the temperature of the slag is 1250-1400 ℃, the temperature of the slag is reduced to 300-500 ℃ within 2-8 seconds, and quenching treatment is completed. Based on this, amorphous glassy residues can be obtained more smoothly and efficiently.
In a preferred embodiment, the iron-removing glass slag and the activity excitant are mixed under the hot flue gas atmosphere (110-160 ℃) to carry out drying and grinding treatment, wherein the treatment temperature is 110-160 ℃ and the treatment time is 1-3 hours in the grinding treatment process. When the temperature is too low, the drying time is long, the production efficiency is low, and when the temperature is too high, the energy consumption is increased. In the concrete operation, the flue gas from the kiln can be utilized by the person skilled in the art to provide hot flue gas atmosphere for grinding treatment, the heat release can be further generated by the severe movement friction of the glass slag, the consumption of dry flue gas is reduced, meanwhile, water stored by solid slag is released by mutual collision among particles, and the grinding effect is better.
In order to further improve the grinding effect, so that the active micro powder material is promoted to have better application specific surface area, preferably, the raw materials in the grinding treatment process also comprise grinding aids; more preferably, the grinding aid is one or more of triethanolamine, fly ash, industrial salt, triisopropanolamine, ethylene glycol, propylene glycol, glycerol, sodium fatty acid, calcium chloride, sodium acetate, aluminum sulfate, calcium formate, wood calcium or wood sodium; the consumption of the grinding aid is 0.02-1% of the weight of the dry glass slag. The above-described grinding treatment of the present invention is carried out in a ball mill, a vertical mill or a roll mill.
The invention also provides an active micro powder material which is obtained by the treatment method of the electrolytic manganese slag.
Based on the reasons, the active micro powder material obtained by the treatment method has potential hydration activity and better activity. The material can be used as an active mixed material by virtue of better hydration activity, and can be directly used as an active admixture for being sold to production enterprises such as concrete, cement products and the like. The specific surface area of the active micropowder material is not less than 350m 2 /kg。
The present application is described in further detail below in conjunction with specific embodiments, which should not be construed as limiting the scope of the claims.
Example 1
Electrolytic manganese slag components: caO 7wt%, siO 2 30wt%、MnO4wt%、Fe 2 O 3 6wt%、Al 2 O 3 2.5wt%、MgO 2.4wt%、SO 3 30wt% and the balance impurities.
The electrolytic manganese slag, the modifier (limestone) and the regulator (sodium carbonate) are mixed according to the weight ratio of 86:12:2, and then are put into a melting furnace and are smelted at 1400 ℃ to obtain slag. The slag comprises the following components: 25wt% of CaO and SiO 2 55wt%,Al 2 O 3 4.5wt percent of MgO 5.6wt percent, feO 1.0wt percent, mnO 1.4wt percent and the balance of impurities.
Wherein the weight ratio of the modifier to the slag is 26:100; the weight ratio of the regulator to the slag is 2:100.
the slag enters a cooler through a chute, and is cooled to 350 ℃ in 6s in a water spray cooling mode, so that quenching is completed, and glass slag is obtained. And carrying out magnetic separation on the glass slag to remove iron to obtain iron-removed glass slag. Removal ofAfter iron glass slag is doped with an activity excitant (the weight ratio of electrolytic manganese slag, quicklime and sodium silicate which are subjected to oxidation roasting treatment at 400 ℃ is 80:15:4) and grinding aid (triethanolamine), grinding is carried out in a ball mill (under the atmosphere of hot flue gas at 160 ℃) for 2 hours to a specific surface area of 410m 2 And (3) per kg, preparing the active micro powder material. Wherein, the weight ratio of the iron-removing glass slag to the activity excitant is 100:10; the consumption of the grinding aid is 0.1 percent of the weight of the iron-removing glass slag.
Example 2
The only difference from example 1 is that:
the electrolytic manganese slag, the modifier (limestone) and the regulator (sodium carbonate) are mixed according to the weight ratio of 100:10:1, and then are put into a melting furnace and are smelted at 1350 ℃ to obtain slag. The slag comprises the following components: caO 22.3wt%, siO 2 57.3wt%,Al 2 O 3 4.7wt percent of MgO 5.5wt percent, feO 1.0wt percent, mnO 1.5wt percent and the balance of impurities.
Wherein the weight ratio of the modifier to the slag is 19:100; the weight ratio of the regulator to the slag is 1.9:100. the weight ratio of the iron-removing glass slag to the activity excitant is 100:5, a step of; the consumption of the grinding aid is 0.05 percent of the weight of the iron glass slag. Grinding to specific surface area of 380m 2 /kg。
Example 3
The only difference from example 1 is that:
the electrolytic manganese slag, the modifier (limestone) and the regulator (sodium carbonate) are mixed according to the weight ratio of 100:35:5, and then are put into a melting furnace and are smelted at 1400 ℃ to obtain slag. The slag comprises the following components: caO 34.1wt%, siO 2 44.3wt%,Al 2 O 3 3.6wt percent of MgO 5.9wt percent, 0.8wt percent of FeO, 1.2wt percent of MnO and the balance of impurities.
Wherein the weight ratio of the modifier to the slag is 50:100; the weight ratio of the regulator to the slag is 7:100.
the weight ratio of the iron-removing glass slag to the activity excitant is 100:18; the consumption of the grinding aid is 1% of the weight of the iron glass slag. Grinding to specific surface area of 450m 2 /kg。
Example 4
The only difference from example 1 is that: smelting is carried out at 1300 ℃.
The slag comprises the following components: 25wt% of CaO and SiO 2 55wt%,Al 2 O 3 4.5wt percent of MgO 5.6wt percent, feO 1.0wt percent, mnO 1.4wt percent and the balance of impurities.
Example 5
The only difference from example 1 is that: smelting is carried out at 1450 ℃.
The slag comprises the following components: 25wt% of CaO and SiO 2 55wt%,Al 2 O 3 4.5wt percent of MgO 5.6wt percent, feO 1.0wt percent, mnO 1.4wt percent and the balance of impurities.
Example 6
The only difference from example 1 is that: smelting is carried out at 1200 ℃.
The slag comprises the following components of CaO 25wt percent and SiO 2 55wt%,Al 2 O 3 4.5wt percent of MgO 5.6wt percent, feO 1.0wt percent, mnO 1.4wt percent and the balance of impurities.
Example 7
The only difference from example 1 is that: the weight ratio of the modifier to the slag is 10:100.
the slag comprises the following components: caO 18.8wt%, siO 2 60.5wt%,Al 2 O 3 5wt%, mgO 5.3wt%, feO 1.1wt%, mnO 4.0wt% and the balance of impurities.
Example 8
The only difference from example 1 is that: the weight ratio of the modifier to the slag is 35:100.
the slag comprises the following components: caO 28.6wt%, siO 2 51.7wt%,Al 2 O 3 4.2wt percent of MgO, 5.8wt percent of FeO, 0.9wt percent of MnO, 1.4wt percent and the balance of impurities.
Characterization of the properties:
activity index test: the test is performed with reference to GB/T18046-2017.
TABLE 1
Figure SMS_1
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The method for treating the electrolytic manganese slag is characterized by comprising the following steps of:
adding a modifier and a regulator into the electrolytic manganese slag to perform smelting at 1300-1450 ℃ to obtain flue gas and slag;
the flue gas is used for preparing acid;
quenching the slag to obtain glass slag;
carrying out magnetic separation treatment on the glass slag to obtain iron-removing glass slag;
mixing the deironing glass slag and the activity excitant in hot flue gas atmosphere to perform drying grinding treatment to obtain an active micro powder material;
wherein the modifier is one or more of quicklime, limestone, dolomite, industrial by-product gypsum, steel slag, quartz or tailings; the regulator is one or more of fluorite, sodium carbonate, potassium carbonate or sodium bicarbonate.
2. The method for treating electrolytic manganese slag according to claim 1, wherein the slag comprises the following components: caO 22-45wt%, siO 2 26~52wt%,Al 2 O 3 3-10wt% of MgO, 1-9wt% of FeO, 0.2-2wt% of MnO, 1-5wt% of MnO and the balance of impurities;
the electrolytic manganese slag comprises the following components: caO 3-16wt%, siO 2 20~40wt%,Al 2 O 3 1~3wt%,MgO 1~3wt%,Fe 2 O 3 5~12wt%,MnO 4~11wt%、SO 3 28-33 wt% and the balance of impurities.
3. The method for treating electrolytic manganese slag according to claim 1 or 2, wherein the weight ratio of the modifier to the slag is (10 to 35): 100;
the weight ratio of the regulator to the slag is (1-5): 100.
4. the method for treating electrolytic manganese slag according to claim 1 or 2, wherein the weight ratio of the iron-removing glass slag to the activity excitant is 100: (5-20);
the active excitant comprises main materials, auxiliary materials and reinforcing agents;
the main material is the electrolytic manganese slag and/or the electrolytic manganese slag after low-temperature roasting treatment; the temperature of the low-temperature roasting treatment is 300-500 ℃;
the auxiliary materials are one or more of quicklime, limestone, calcined dolomite, volcanic ash, clinker or industrial gypsum;
the reinforcing agent is one or more of caustic alkali, sodium carbonate, calcium sulfate, sodium silicate or sodium sulfate.
5. The method for treating electrolytic manganese slag according to claim 4, wherein the weight ratio of the main material, the auxiliary material and the reinforcing agent is (65-90): (10-25): (1-8).
6. The method for treating electrolytic manganese slag according to claim 1 or 2, wherein the temperature of the slag is 1250-1400 ℃, the slag is cooled to 300-500 ℃ within 2-8 seconds, and the quenching treatment is completed.
7. The method for treating electrolytic manganese slag according to claim 1, wherein in the dry grinding treatment process, the treatment temperature is 110-160 ℃ and the treatment time is 1-3 h.
8. The method for treating electrolytic manganese slag according to claim 7, wherein the raw materials in the dry grinding treatment process further comprise grinding aids;
the grinding aid is one or more of triethanolamine, fly ash, industrial salt, triisopropanolamine, ethylene glycol, propylene glycol, glycerol, fatty acid sodium, calcium chloride, sodium acetate, aluminum sulfate, calcium formate, wood calcium or wood sodium;
the consumption of the grinding aid is 0.02-1% of the weight of the iron glass slag;
the dry grinding treatment is carried out in a ball mill, a vertical mill or a roller mill.
9. An active micropowder material, characterized in that it is obtained by the method for treating electrolytic manganese slag according to any one of claims 1 to 8.
10. The active micropowder material according to claim 9, characterized in that the specific surface area of the active micropowder material is not less than 350m 2 /kg。
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