Environment-friendly iron channel ramming material and preparation method and construction method thereof

Abstract

The application discloses an environment-friendly iron channel ramming material and a preparation method and a construction method thereof. The iron channel ramming material comprises aggregate powder, polyvinyl alcohol fiber and silica sol; wherein the components of the bone powder material are as follows in percentage by mass: waste alumina porcelain particles 52-60%, waste silicon carbide box car particles 5-9%, waste alumina porcelain powder 10-14%, waste silicon carbide dust powder 3-7%, waste silicon carbide box car powder 5-9%, waste polysilicon slice powder 1-2%, waste brown corundum dust powder 8-12%, and waste electrode powder 1-3%. When used on site, a layer of silica sol is sprayed on the cleaned branch channel or slag channel, then the iron channel ramming material is put into the channel and rammed, liquid high-temperature molten slag is scooped from the main channel and poured on the rammed ramming material, and the ramming material can be used after 4-6 minutes. The iron channel ramming material improves the service life and quality stability of the ramming material, the utilization ratio of waste refractory materials of the bone powder material reaches 100%, is green and environment-friendly, low in cost, and has a wide application prospect.

Description

Technical Field

[0001] This invention belongs to the field of undetermined refractory materials, specifically relating to an environmentally friendly iron trench ramming mix and its preparation and construction methods. Background Technology

[0002] Iron trough ramming mix is ​​an important material for the daily maintenance of the blast furnace tapping area. Traditional iron trough ramming mixes typically have the following problems in application:

[0003] ① The use of resin bonding releases carcinogenic gases and pollutes the environment.

[0004] ② Using traditional refractory materials is too costly, and the processing of traditional refractory materials is a high-energy-consuming and high-polluting process.

[0005] ③ Poor sintering properties; the higher the grade of iron grooving ramming mix, the worse the effect.

[0006] ④ The service life fluctuates greatly because the ramming material does not bond sufficiently with the construction surface and is greatly affected by the quality of the ramming process.

[0007] Because other bonding methods struggle to achieve the early strength and bake-free characteristics of resin bonding, resin bonding has long been used for ramming mixes in iron trenches. However, resin itself has an irritating odor, and high-temperature carbonization can produce carcinogenic gases. The production of traditional refractory materials for iron trench ramming mixes is characterized by high energy consumption and pollution; for example, fused alumina consumes 2300 kWh per ton, and silicon carbide consumes 6000 kWh per ton. Overcoming the technical bottleneck of resin bonding in iron trench ramming mixes, completely avoiding harm to human health and environmental pollution, and simultaneously utilizing more recycled refractory materials to reduce mineral resource and energy consumption has become a crucial research topic for iron trench ramming mixes in the new era.

[0008] Patent 201610059719.1 discloses a non-baking ramming mix for use in the tapping trough of an ironmaking blast furnace. Expressed as a weight percentage, the non-baking ramming mix is ​​mainly composed of 10-15% 0-1mm bauxite, 12-18% 1-3mm bauxite, 15-20% 3-5mm bauxite, 18-23% brown corundum, 10-15% silicon carbide, 8-10% modified pitch, 7-10% phenolic resin, 2-3% hexamethylenetetramine, and 1-2% spodumene powder. While this improves the sintering strength of the ramming mix itself, the use of resin bonding pollutes the environment.

[0009] Patent 201410492117.6 discloses an environmentally friendly ramming mix for blast furnace tapping troughs and its preparation method. The ramming mix comprises bauxite particles and / or fine powder, brown corundum particles and / or fine powder, silicon carbide particles and / or fine powder, clay fine powder, carbon source, expanding agent, antioxidant, and composite binder. The composite binder consists of modified tar, modified pitch, and a wetting agent. This reduces the content of harmful substances in the ramming mix, with benzo(a)pyrene content <100 ppm. However, it does not completely eliminate the environmental pollution and harm caused by carbonaceous binders at high temperatures. Furthermore, using only mineral-derived refractory materials is not only costly but also requires the consumption of large amounts of mineral resources and energy.

[0010] 201410118848.4 discloses an environmentally friendly high-throughput iron-filling ramming material that does not require baking. The material is characterized by being composed of the following raw materials in parts by weight: 45-55 parts brown corundum, 19-27 parts dense corundum, 11-23 parts SiC, 0-8 parts Si powder, 0-12 parts Si-(3)N-(4) powder, 3-6 parts active α-Al-(2)O-(3) powder, 1-5 parts flake graphite, and 3-8 parts binder, wherein the total number of raw materials other than the binder is 100 parts; the binder is composed of: 40-80 parts carbon resin, 10-40 parts vegetable oil, 5-15 parts melamine urea-formaldehyde resin, and 2-8 parts carbon powder. While improving the quality of raw materials for ramming mixes has increased the amount of iron passing through them, a large amount of resin and oil are still used as binders. This does not change the environmental pollution and harm caused by carbonaceous binders such as resin and oil at high temperatures. At the same time, using only mineral-derived refractory raw materials is not only costly, but also requires the consumption of a large amount of mineral resources and energy. Summary of the Invention

[0011] The present invention addresses the shortcomings of existing technologies by providing an environmentally friendly method for preparing and constructing iron trench ramming material.

[0012] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0013] An environmentally friendly iron trench ramming mix is ​​provided, comprising aggregate powder, polyvinyl alcohol fiber, and silica sol; wherein:

[0014] The aggregate powder comprises, by weight percentage, the following components:

[0015] Waste alumina ceramic particles: 52-60%;

[0016] Waste silicon carbide crucible particles: 5-9%;

[0017] 10-14% waste alumina ceramic powder;

[0018] Waste silicon carbide dust contains 3-7%;

[0019] 5-9% waste silicon carbide crucible powder;

[0020] 1-2% waste polycrystalline silicon wafer powder;

[0021] Waste brown corundum dust removal powder: 8-12%;

[0022] 1-3% waste electrode powder;

[0023] Polyvinyl alcohol fiber accounts for 0.08-0.12% of the aggregate powder by weight;

[0024] The silica sol constitutes 7-8% of the aggregate powder by weight;

[0025] The silica sol is prepared from elemental Si and has an average particle size of 9.5-11.5 nm.

[0026] According to the above scheme, in the silica sol, SiO2 ≥ 30%; Na2O ≤ 0.35%; pH value 9.5-10.5; viscosity (25℃, mpa.s): 4-5.

[0027] According to the above scheme, the waste alumina ceramic particles are obtained by selecting, recycling, and crushing used waste electronic ceramics. The waste alumina ceramic particles have an Al2O3 content of ≥94% and a particle size of 8-0.1mm. Preferably, the ratio of 8-5mm particles: 5-3mm particles: 3-1mm particles: 1-0.1mm particles is 13-15: 13-15: 18-20: 5-13.

[0028] According to the above scheme, the waste silicon carbide sagger particles are made by selecting, recycling, and crushing waste silicon carbide sagger plates into particles with a particle size of 1-0.1mm and a SiC content of ≥80%.

[0029] According to the above scheme, the waste alumina ceramic powder is obtained by selecting, recycling, and grinding the waste electronic ceramics. The particle size of the waste alumina ceramic powder is ≤74μm and the Al2O3 content is ≥93%.

[0030] According to the above scheme, the waste silicon carbide dust is the dust generated during the crushing and pulverizing of first-grade silicon carbide with a SiC content of ≥98%, and its SiC content is ≥95.5%.

[0031] According to the above scheme, the waste silicon carbide sagger powder is obtained by selecting, reusing and grinding waste silicon carbide sagger plates. The particle size of the waste silicon carbide sagger powder is ≤74μm and the SiC content is ≥80%.

[0032] According to the above scheme, the waste polycrystalline silicon wafer powder is obtained by grinding the waste generated from polycrystalline silicon cutting. The particle size of the waste polycrystalline silicon wafer powder is ≤74μm and the Si content is ≥86%.

[0033] According to the above scheme, the waste brown fused alumina dust removal powder is obtained after dust removal during the crushing and processing of brown fused alumina, and the Al2O3 content of the waste brown fused alumina dust removal powder is ≥87.5%.

[0034] According to the above scheme, the waste electrode powder is obtained by selecting, regenerating and processing waste graphite electrodes and grinding them. The particle size of the waste electrode powder is ≤74μm and the C content is ≥90%.

[0035] According to the above scheme, the polyvinyl alcohol fiber is a water-soluble fiber with good dispersibility at 80°C (meaning it is water-soluble at 80°C), with a length of 5.5-6.5 mm and a diameter of 16-18 micrometers. Fibers of this size and material have the best anti-explosion performance among this material.

[0036] A method for preparing the above-mentioned environmentally friendly iron trench ramming material is provided, the specific steps of which are as follows:

[0037] When using it on site, first mix the bone meal with polyvinyl alcohol fiber evenly, then add silica sol and mix evenly to obtain environmentally friendly iron trench ramming material.

[0038] A construction method for the above-mentioned environmentally friendly iron trench ramming material is provided, specifically as follows:

[0039] After cleaning the branch trench or slag trench, spray a layer of silica sol, then put the above-mentioned environmentally friendly iron trench ramming material into the trench and compact it with a vibratory tamping machine. Scoop a small amount of liquid high-temperature molten slag from the main trench and gradually pour it onto the compacted ramming material. It can be used after 4-6 minutes.

[0040] According to the above plan, liquid high-temperature slag is poured onto the compacted ramming material until more than 50% of the ramming material area is covered.

[0041] This invention provides an environmentally friendly iron trench ramming material, the specific working mechanism of which is as follows:

[0042] This invention uses waste alumina ceramics, waste silicon carbide crucible material, waste polycrystalline silicon wafer powder, waste brown fused alumina dust extraction powder, waste electrode powder, and waste silicon carbide dust extraction powder as the main powder components, achieving a breakthrough in using 100% waste refractory materials as the aggregate powder for iron trench ramming mix. The waste brown fused alumina dust extraction powder reduces the amount of liquid added and can adjust the curing time of the ramming mix; the waste electrode powder provides the carbon source from the asphalt and resin in the original ramming mix; the waste polycrystalline silicon wafer powder acts as an antioxidant for the graphite contained in the waste electrode powder; the waste silicon carbide dust extraction powder not only increases the silicon carbide content and slag resistance of the ramming mix, but also plasticizes the silica sol-bonded iron trench ramming mix and acts as a filler, reducing the amount of binder added. The main powder component of this invention has high content and good high-temperature performance, which not only improves the high-temperature performance of the ramming mix, but also promotes the full sintering inside the ramming mix (containing trace amounts of free impurities, forming a liquid phase at high temperature to promote the sintering of aggregate and matrix). This invention achieves a breakthrough by using 100% waste refractory materials for the ramming mix, thus realizing the long service life of environmentally friendly iron trench ramming mix.

[0043] The silica sol with good sphericity and an average particle size of about 10 nm, selected in this invention, combined with a specific polyvinyl alcohol fiber blend, can significantly increase the blast resistance temperature of the castable, greatly improving the blast resistance of the sol-bonded ramming mix. This makes it possible to use silica sol as a binder to replace highly polluting resin binders. Waste brown fused alumina dust removal powder not only reduces the amount of liquid added to the ramming mix but also promotes the curing of the sol. This may be due to the alkaline impurities in the brown fused alumina dust removal powder ionizing into metal cations in the silica sol.

[0044] This invention achieves a thorough "surface bond" between the sol-bonded ramming material and the lining by first spraying a layer of sol-bonded binder onto the lining and then adding and tamping it. This avoids gaps or "point bonding" caused by the rapid solidification of the sol-bonded ramming material directly on the surface of the lining material. Covering the surface of the ramming material with molten slag allows for rapid solidification and sintering without cracking, improving the bonding strength of the sol-bonded ramming material and ensuring its service life and quality stability.

[0045] The beneficial effects of this invention are as follows:

[0046] 1. This invention provides an environmentally friendly iron trench ramming mix, using 100% waste refractory materials as aggregate powder, which reduces costs, improves the high-temperature performance of the ramming mix, and promotes full sintering inside the ramming mix, thus achieving a long service life for the environmentally friendly iron trench ramming mix. Furthermore, by combining silica sol with good sphericity and an average particle size of approximately 10nm, along with polyvinyl alcohol fibers, the explosion-proof temperature of the castable is significantly improved. It eliminates the need for environmentally polluting components such as resins and asphalt, making it more green and environmentally friendly. It exhibits excellent industrial application performance and significant economic and social benefits.

[0047] 2. This invention achieves a thorough "surface bond" between the sol-bonded ramming material and the trench lining by first spraying a layer of sol-bonded binder onto the hot trench lining, then adding ramming material for ramming, and finally covering the surface of the ramming material with molten slag. This results in a stronger bond between the ramming material and the trench lining, improving the service life and quality stability of the ramming material.

[0048] 3. This invention innovatively applies a silica sol bonding system to iron trough ramming mix, breaking through the long-standing technical bottleneck that iron trough ramming mix cannot get rid of the environmentally polluting bonding methods of resin and asphalt, and providing a good foundation for iron trough ramming mix to truly achieve environmental protection and pollution-free operation. Detailed Implementation

[0049] To better understand the present invention, the following embodiments further illustrate the content of the present invention, but the content of the present invention is not limited to the following embodiments.

[0050] The specific specifications of the raw materials used in the following embodiments are as follows:

[0051] The waste alumina ceramic particles are obtained by selecting, recycling, and crushing waste electronic ceramics. The waste alumina ceramic particles have an Al2O3 content of ≥94% and a particle size of 8-0.1mm. Specifically, the ratio of particles with a particle size of 8-5mm: particles with a particle size of 5-3mm: particles with a particle size of 3-1mm: particles with a particle size of 1-0.1mm is 13-15: 13-15: 18-20: 5-13.

[0052] The waste silicon carbide sagger particles are made from waste silicon carbide sagger plates that have been carefully selected, recycled, and crushed into particles with a diameter of 1-0.1 mm and a SiC content of ≥80%.

[0053] The waste alumina ceramic powder is obtained by selecting, recycling, and grinding waste electronic ceramics. The particle size of the waste alumina ceramic powder is ≤74μm and the Al2O3 content is ≥93%.

[0054] The waste silicon carbide dust is the dust generated during the crushing and grinding of first-grade silicon carbide with a SiC content of ≥98%, and its SiC content is ≥95.5%.

[0055] The waste silicon carbide sagger powder is obtained by selecting, recycling, and grinding waste silicon carbide sagger plates. The particle size of the waste silicon carbide sagger powder is ≤74μm and the SiC content is ≥80%.

[0056] The waste polycrystalline silicon wafer powder is obtained by grinding waste generated from polycrystalline silicon cutting. The particle size of the waste polycrystalline silicon wafer powder is ≤74μm and the Si content is ≥86%.

[0057] The waste brown fused alumina dust removal powder is obtained after dust removal during the crushing and processing of brown fused alumina, and the Al2O3 content of the waste brown fused alumina dust removal powder is ≥87.5%.

[0058] The waste electrode powder is obtained by selecting, regenerating, and grinding waste graphite electrodes. The particle size of the waste electrode powder is ≤74μm and the C content is ≥90%.

[0059] The polyvinyl alcohol fiber is a water-soluble fiber with good dispersibility at 80°C, with a length of 5.5-6.5 mm and a diameter of 16-18 micrometers. Fibers of this size and material have excellent explosion resistance.

[0060] The silica sol is prepared from elemental Si, with SiO2 ≥ 30%; Na2O ≤ 0.35%; pH value 9.5-10.5; viscosity (25℃, mPa·s): 4-5; and average particle size 9.5-11.5 nm. The silica sol prepared from elemental Si has a more uniform particle size distribution and better sphericity. Simultaneously controlling the particle size to around 10 nm results in higher drying strength and better anti-explosion performance when added to castables.

[0061] Example 1

[0062] An environmentally friendly ramming mix for iron trenches includes aggregate powder, polyvinyl alcohol fiber, and silica sol; wherein:

[0063] The aggregate powder comprises, by mass percentage: 52% waste alumina ceramic particles, 9% waste silicon carbide crucible particles, 10% waste alumina ceramic powder, 3% waste silicon carbide dust extraction powder, 9% waste silicon carbide crucible powder, 2% waste polycrystalline silicon wafer powder, 12% waste brown corundum dust extraction powder, and 3% waste electrode powder.

[0064] Polyvinyl alcohol fiber accounts for 0.1% of the aggregate powder mass;

[0065] The silica sol accounts for 7% of the aggregate powder mass.

[0066] The environmentally friendly iron trench ramming mix sample prepared in Example 1 was tested, and the test results are shown in Table 1. The tests were conducted in accordance with current national or industry standards, and the results obtained are the average of three tests (hereinafter the same).

[0067] Table 1. Test results of the environmentally friendly iron trench ramming mix samples prepared in Example 1.

[0068]

[0069] For on-site use, first mix bone meal with 0.1% polyvinyl alcohol fiber (by weight of bone meal) until homogeneous, then add 7% silica sol (by weight of bone meal) to prepare ramming mix for iron trenches. After cleaning the branch trenches or slag trenches, spray a layer of silica sol, then put the ramming mix into the trench and compact it with a vibratory tamper. Slowly pour a small amount of liquid high-temperature molten slag from the main trench onto the compacted ramming mix. It is ready for use after 5 minutes.

[0070] Example 2

[0071] An environmentally friendly ramming mix for iron trenches includes aggregate powder, polyvinyl alcohol fiber, and silica sol; wherein:

[0072] The aggregate powder comprises, by mass percentage: 60% waste alumina ceramic particles, 5% waste silicon carbide crucible particles, 12% waste alumina ceramic powder, 7% waste silicon carbide dust extraction powder, 5% waste silicon carbide crucible powder, 2% waste polycrystalline silicon wafer powder, 8% waste brown corundum dust extraction powder, and 1% waste electrode powder.

[0073] Polyvinyl alcohol fiber accounts for 0.08% of the aggregate powder mass;

[0074] The silica sol accounts for 7.5% of the aggregate powder mass.

[0075] The environmentally friendly iron trench ramming mix sample prepared in Example 2 was tested, and the test results are shown in Table 2. The tests were conducted in accordance with current national or industry standards, and the results obtained are the average of three tests (hereinafter the same).

[0076] Table 2. Test results of the environmentally friendly iron trench ramming mix samples prepared in Example 2 of this study.

[0077]

[0078]

[0079] For on-site use, first mix bone meal with 0.08% (by weight of bone meal) of polyvinyl alcohol fiber until homogeneous, then add 7.5% (by weight of bone meal) of silica sol to prepare ramming mix for iron trenches. After cleaning the branch trenches or slag trenches, spray a layer of silica sol, then put the ramming mix into the trench and compact it with a vibratory tamper. Slowly pour a small amount of liquid high-temperature molten slag from the main trench onto the compacted ramming mix. It is ready for use after 5 minutes.

[0080] Example 3

[0081] An environmentally friendly ramming mix for iron trenches includes aggregate powder, polyvinyl alcohol fiber, and silica sol; wherein:

[0082] The aggregate powder comprises, by mass percentage: 56% waste alumina ceramic particles, 7% waste silicon carbide crucible particles, 12% waste alumina ceramic powder, 5% waste silicon carbide dust extraction powder, 7% waste silicon carbide crucible powder, 1% waste polycrystalline silicon wafer powder, 10% waste brown corundum dust extraction powder, and 2% waste electrode powder.

[0083] Polyvinyl alcohol fiber accounts for 0.12% of the aggregate powder mass;

[0084] The silica sol accounts for 8% of the aggregate powder mass.

[0085] The environmentally friendly iron trench ramming mix sample prepared in Example 3 was tested, and the test results are shown in Table 3. The tests were conducted in accordance with current national or industry standards, and the results obtained are the average of three tests (hereinafter the same).

[0086] Table 3. Test results of the environmentally friendly iron trench ramming mix samples prepared in Example 3 of this study.

[0087]

[0088] For on-site use, first mix bone meal with 0.12% polyvinyl alcohol fiber by weight of bone meal, then add 8% silica sol by weight of bone meal to prepare iron trench ramming mix. After cleaning the branch trenches or slag trenches, spray a layer of silica sol, then put the iron trench ramming mix into the trench and compact it with a vibratory tamping machine. Slowly pour a small amount of liquid high-temperature molten slag from the main trench onto the compacted ramming mix. It can be used after 5 minutes.

[0089] Example 4

[0090] An environmentally friendly iron trench ramming mix comprises aggregate powder, polyvinyl alcohol fiber, and silica sol; wherein:

[0091] The aggregate powder comprises, by mass percentage: 52% waste alumina ceramic particles, 9% waste silicon carbide crucible particles, 14% waste alumina ceramic powder, 3% waste silicon carbide dust extraction powder, 6.5% waste silicon carbide crucible powder, 1.5% waste polycrystalline silicon wafer powder, 12% waste brown corundum dust extraction powder, and 2% waste electrode powder.

[0092] Polyvinyl alcohol fiber accounts for 0.1% of the aggregate powder mass;

[0093] The silica sol accounts for 7.2% of the aggregate powder by weight.

[0094] The environmentally friendly iron trench ramming mix sample prepared in Example 4 was tested, and the test results are shown in Table 4. The tests were conducted in accordance with current national or industry standards, and the results obtained are the average of three tests (hereinafter the same).

[0095] Table 4. Test results of the environmentally friendly iron trench ramming mix samples prepared in Example 4 of this study.

[0096]

[0097] For on-site use, first mix bone meal with 0.1% polyvinyl alcohol fiber (by weight of bone meal) until homogeneous, then add 7.2% silica sol (by weight of bone meal) to prepare ramming mix for iron trenches. After cleaning the branch trenches or slag trenches, spray a layer of silica sol, then put the ramming mix into the trench and compact it with a vibratory tamper. Slowly pour a small amount of liquid high-temperature molten slag from the main trench onto the compacted ramming mix. It is ready for use after 5 minutes.

[0098] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An environmentally friendly iron channel ramming material, characterized in that, It comprises aggregate powder, polyvinyl alcohol fiber and silica sol; wherein: The aggregate powder comprises the following components in percentage by mass: Waste alumina ceramic particles 52-60%; Waste silicon carbide anode block particles 5~9%; Waste alumina ceramic powder 10~14%; Waste silicon carbide dust 3~7%; Waste silicon carbide anode block powder 5~9%; Waste polysilicon slice powder 1-2%; Waste brown corundum dust 8~12%; Waste electrode powder 1~3%; The polyvinyl alcohol fiber is 0.08-0.12% of the mass of the aggregate powder; The silica sol is 7-8% of the mass of the aggregate powder; The silica sol is prepared from elemental Si and has an average particle size of 9.5-11.5 nm; The polyvinyl alcohol fiber is a water-soluble fiber with good dispersibility at 80℃, 5.5-6.5 mm long and 16-18 microns in diameter.

2. The environment-friendly iron channel ramming mass according to claim 1, characterized in that, In the silica sol, SiO2≥30%, Na2O≤0.35%, pH value 9.5-10.5, and viscosity at 25℃ 4-5 mpa.s.

3. The environment-friendly iron channel ramming mass according to claim 1, characterized in that, The waste alumina ceramic particles are obtained by crushing the used waste electronic ceramics after selection and recycling, the waste alumina ceramic particles have Al2O3 content≥94% and particle size of 8-0.1 mm; the waste alumina ceramic powder is obtained by grinding the used waste electronic ceramics after selection and recycling, the waste alumina ceramic powder has particle size≤74 μm and Al2O3 content≥93%.

4. The environmentally friendly iron trough ramming mass according to claim 1, characterized in that, The waste silicon carbide anode block particles are obtained by crushing the used waste silicon carbide anode block plates after selection and recycling, the waste silicon carbide anode block particles have SiC content≥80% and particle size of 1-0.1 mm; the waste silicon carbide anode block powder is obtained by grinding the used waste silicon carbide anode block plates after selection and recycling, the waste silicon carbide anode block powder has particle size≤74 μm and SiC content≥80%.

5. The environmentally friendly iron trough ramming mass according to claim 1, characterized in that, The waste silicon carbide dust is the dust generated during the crushing of the first grade silicon carbide with SiC content≥98%, the waste silicon carbide dust has SiC content≥95.5%; the waste brown corundum dust is obtained after the dust is removed during the crushing of the brown corundum, the waste brown corundum dust has Al2O3 content≥87.5%.

6. The environmentally friendly iron trough ramming mass according to claim 1, characterized in that, The waste polysilicon slice powder is obtained by grinding the waste material generated during the cutting of polysilicon, the waste polysilicon slice powder has particle size≤74 μm and Si content≥86%.

7. The environmentally friendly iron trough ramming mass according to claim 1, characterized in that, The waste electrode powder is obtained by grinding the used graphite electrode after selection and recycling, the waste electrode powder has particle size≤74 μm and C content≥90%.

8. A method for producing an environmentally friendly iron channel ramming mass according to any one of claims 1 to 7, characterized in that The specific steps are as follows: During on-site use, the aggregate powder is stirred with the polyvinyl alcohol fiber, and then the silica sol is added and stirred, to obtain the environment-friendly iron channel ramming material.

9. A method of constructing an environmentally friendly iron trough ramming mass according to any one of claims 1 to 7, characterized in that, Specifically, After the branch channel or slag channel is cleaned, a layer of silica sol is sprayed, then the environment-friendly iron channel ramming material is put into the channel and compacted by vibration ramming, and then a small amount of liquid high-temperature slag is poured on the compacted ramming material, and the channel can be used after 4-6 minutes.

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