CN110408779B - Method for comprehensively recycling vanadium-containing solid waste resources - Google Patents
Method for comprehensively recycling vanadium-containing solid waste resources Download PDFInfo
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Abstract
The invention discloses a method for comprehensively recycling vanadium-containing solid waste resources, which comprises the following steps: (1) uniformly mixing 50 vanadium-iron-silicon hot slag and vanadium-aluminum waste with vanadium pentoxide, aluminum particles, iron particles, lime and cold materials according to a certain mass ratio to obtain a uniformly mixed material; (2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and igniting by an electrode to enable the materials to react; (3) and naturally cooling the alloy after smelting, removing the furnace after cooling, slagging off to obtain a ferrovanadium alloy ingot, crushing and screening to obtain a 50 ferrovanadium qualified product and 50 ferrovanadium powder, and recovering the 50 ferrovanadium powder. According to the invention, by adopting the technology of smelting 50 ferrovanadium by an electro-aluminothermic process, the resources of 50 ferrovanadium silicon hot slag and vanadium aluminum waste vanadium-containing solid waste are recycled, the recovery rate of metal vanadium in the vanadium-containing solid waste is 90.0-95.0%, the 50 ferrovanadium yield is averagely improved by 2-3%, and the method accords with the mode of circular economy and the development direction of green production of manufacturing industry.
Description
Technical Field
The invention belongs to the technical field of ferrovanadium alloy production, and particularly relates to a method for comprehensively recycling vanadium-containing solid waste resources.
Background
Ferrovanadium is widely used for smelting alloy steel as an alloy additive, and the mainstream processes of the production method of 50 ferrovanadium are an electro-silicothermic method and an electro-aluminothermic method. The 50 ferrovanadium silicon hot slag generated by smelting 50 ferrovanadium by an electro-silicothermic process contains 9.0-15.0% of V, and is an important vanadium-containing waste. In the screening step in the process of producing the vanadium-aluminum alloy, a certain amount of vanadium-aluminum alloy powder (the granularity is less than 1 mm) can be generated, the requirement on the granularity of qualified products can not be met, the vanadium-aluminum alloy powder is considered as vanadium-aluminum alloy waste, and the vanadium-aluminum alloy waste comprises the following main components: v: 55.00-59.90%, Al: 40.0-45.0%. If the two vanadium-containing solid wastes cannot be effectively utilized, firstly, the development mode of circular economy is not met, secondly, the environmental protection problem caused by accumulation of the solid wastes is also against the requirement of green production, and in addition, the loss of valuable metals caused is not beneficial to cost reduction and efficiency improvement of enterprises.
50 ferrovanadium is produced by adopting an electro-aluminothermic method, and the main raw materials are as follows: vanadium pentoxide, aluminum particles, iron particles, lime, cold charge and the like, wherein the cold charge is 50 ferrovanadium powder with the particle size of less than 10mm and can not be sold. Because the 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste contain a certain amount of valuable metal vanadium, how to mix the two vanadium-containing wastes with the raw materials for producing 50 ferrovanadium by an electro-aluminothermic process according to a certain proportion, and the problem of recovering the valuable metal in the 50 ferrovanadium by the process of smelting the 50 ferrovanadium by the electro-aluminothermic process is urgently needed to be solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for comprehensively recycling vanadium-containing solid waste resources. According to the invention, by adopting the technology of smelting 50 ferrovanadium by an electro-aluminothermic process, the vanadium-containing solid waste such as 50 ferrovanadium silicon hot slag, vanadium-aluminum waste and the like is subjected to resource recycling, the recovery rate of metal vanadium in the vanadium-containing solid waste is 90.0-95.0%, and the yield of 50 ferrovanadium is averagely improved by 2-3%; effectively solves the environmental protection problem caused by the accumulation of the vanadium-containing solid waste and conforms to the development mode of circular economy.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 vanadium-iron-silicon hot slag, vanadium-aluminum waste, vanadium pentoxide, aluminum particles, iron particles, white ash and cold materials according to the mass ratio of 50 vanadium-iron-silicon hot slag to 0.03-0.05: 1 vanadium pentoxide, 0.02-0.05: 1 vanadium pentoxide to vanadium-aluminum waste to 1, 0.50-0.60: 1 aluminum particles to vanadium pentoxide, 0.40-0.50: 1 iron particles to vanadium pentoxide, 0.05-0.15: 1 white ash to vanadium pentoxide, and 0.10-0.30: 1 cold materials to obtain uniformly mixed materials;
(2) putting the mixed material into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and reacting the material by igniting an electrode, wherein the ignition voltage of the electrode is 160-180V, the current is 7000-8000A, the smelting temperature is 1600-1800 ℃, and the electrifying time of the electrode is 5-15 min;
(3) and naturally cooling for 20-30 h after smelting is finished, removing the furnace after cooling to separate slag from metal, selling a slag layer for building material enterprises, crushing and screening a ferrovanadium alloy ingot to obtain a qualified ferrovanadium product 50 and ferrovanadium powder 50, and recovering the ferrovanadium powder 50.
The V content of the vanadium iron silicon hot slag in the step (1) 50 is as follows: 9.0-15.0% and the granularity is less than or equal to 30 mm; the vanadium-aluminum waste comprises the following main components: v: 55.00-59.99%, Al: 40-45% and the granularity is less than 1 mm.
The vanadium pentoxide in the step (1) comprises the following components: v2O5≥98%、P≤0.050%、S≤0.030%、 K2O+Na2O is less than or equal to 1.5 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm; the aluminum particle comprises the following components: al is more than or equal to 99.0 percent, and the granularity is as follows: 1.0-6.0 mm; iron particles: fe is more than or equal to 99.0 percent, and the particle size is as follows: 1.0-8.0 mm; lime: CaO is more than or equal to 86.0 percent, P is less than or equal to 0.06 percent, activity is more than or equal to 300ml, and granularity: 10-20 mm; cooling: v: 48.0-55.0%, less than or equal to 3.0% of Si, less than or equal to 0.10% of P, less than or equal to 2.5% of Al, and granularity<10mm。
The step (3) of the invention is to crush and screen to obtain a qualified product of 50 ferrovanadium: v: 48.0-55.0%, C is less than or equal to 0.40%, Si is less than or equal to 2.0%, P is less than or equal to 0.06%, S is less than or equal to 0.04%, Al is less than or equal to 1.5%, and the particle size is as follows: 10-50 mm.
The step (3) of the invention is to obtain 50 ferrovanadium powder after crushing and screening: v: 48.0-55.0%, C is less than or equal to 0.40%, Si is less than or equal to 2.0%, P is less than or equal to 0.06%, S is less than or equal to 0.04%, Al is less than or equal to 1.5%, and the granularity is less than 10 mm.
According to the method, the recovery rate of metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and vanadium-aluminum waste is 90.0-95.0%, and the yield of 50 ferrovanadium is averagely improved by 2-3%.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: 1. according to the invention, by adopting the technology of smelting 50 ferrovanadium by an electro-aluminothermic process, resources of 50 ferrovanadium silicon hot slag and vanadium aluminum waste are recycled, valuable metal loss is avoided, the recovery rate of metal vanadium in vanadium-containing solid waste is 90.0-95.0%, and the yield of 50 ferrovanadium is averagely improved by 2-3%. 2. According to the invention, by means of aluminothermic reaction, vanadium oxide in 50 vanadium iron silicon hot slag is reduced, vanadium enters vanadium iron alloy melt, after the vanadium aluminum waste is melted, aluminum can be used as a reducing agent, the adding amount of aluminum particles in the material is reduced, after the reaction is finished, the metal melt is settled to form vanadium iron alloy, and a byproduct is electric aluminothermic furnace slag which can be used for producing building materials. 3. The invention effectively solves the environmental protection problem caused by accumulation of vanadium-containing solid waste, and accords with the development mode of circular economy and the development direction of green production of manufacturing industry.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples.
The vanadium-containing solid waste in the following examples is selected from 50 ferrovanadium refined slag smelted by a silicothermic process of river steel advanced vanadium titanium new materials, and vanadium-aluminum waste is alloy powder in the process of producing vanadium-aluminum alloy.
Example 1
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 t of ferrovanadium-silicon hot slag, 0.032t of vanadium-aluminum waste, 1.6t of vanadium pentoxide, 0.8t of aluminum particles, 0.64t of iron particles, 0.08t of white ash and 0.16t of cold materials to obtain uniformly mixed materials;
the V content of the 50V-Fe-Si hot slag is as follows: 10.46 percent, the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 56.85%, Al: 43.25 percent and the granularity is less than 1 mm;
the vanadium pentoxide comprises the following components: v2O5：98.05%、P：0.044%、S：0.028%、K2O+Na2O: 0.81 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm;
the aluminum particle comprises the following components: al: 99.08%, particle size: 1.2-5.7 mm;
iron particles: fe: 99.02%, particle size: 1.8-7.0 mm;
lime: CaO: 86.98%, P: 0.05%, activity not less than 300ml, particle size: 12-19 mm;
cooling: v: 51.05%, Si: 1.2%, P: 0.08%, Al: 1.0%, granularity is less than 10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and igniting by an electrode to enable the materials to react, wherein the ignition voltage of the electrode is 160V, the current is 7894A, the smelting temperature is 1640 ℃, and the electrifying time of the electrode is 10.55 min;
(3) naturally cooling for 24 hours after smelting is finished, removing the furnace after cooling, slagging off, separating slag from metal, selling the slag layer for building material enterprises, crushing and screening ferrovanadium ingots to obtain 50 ferrovanadium qualified products and 50 ferrovanadium powder, and recycling the 50 ferrovanadium powder;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 50.02%, C: 0.35%, Si: 1.14%, P: 0.035%, S: 0.012%, Al: 0.95%, particle size: 15-50 mm; 50 ferrovanadium powder: v: 50.02%, C: 0.35%, Si: 1.14%, P: 0.035%, S: 0.012%, Al: 0.95% and granularity less than 10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 91.88%, and the yield of 50 ferrovanadium is averagely improved by 2.74%.
Example 2
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 t of ferrovanadium-silicon hot slag, 0.064t of vanadium-aluminum waste, 1.6t of vanadium pentoxide, 0.848t of aluminum particles, 0.688t of iron particles, 0.16t of white ash and 0.24t of cold materials to obtain uniformly mixed materials;
the V content of the 50V-Fe-Si hot slag is as follows: 12.61 percent and the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 57.21%, Al: 42.64 percent, the granularity is less than 1 mm;
the vanadium pentoxide comprises the following components: v2O5：98.12%、P：0.036%、S：0.023%、K2O+Na2O: 0.77 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm;
the aluminum particle comprises the following components: al: 99.11%, particle size: 1.0-6.0 mm;
iron particles: fe: 99.05%, particle size: 1.0-8.0 mm;
lime: CaO: 88.32%, P: 0.04%, activity more than or equal to 300ml, granularity: 10-20 mm;
cooling: v: 51.63%, Si: 1.14%, P: 0.057%, Al: 1.23% and the granularity is less than 10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by an electro-aluminothermic process, and reacting the materials by electrode ignition, wherein the electrode ignition voltage is 160V, the current is 7894A, the smelting temperature is 1720 ℃, and the electrode electrifying time is 13.20 min;
(3) after smelting, natural cooling is carried out for 28.5 hours, the furnace is removed and slag is removed after cooling, so that slag and metal are separated, a slag layer can be sold to building material enterprises, ferrovanadium ingots are crushed and screened to obtain 50 ferrovanadium qualified products and 50 ferrovanadium powder, and the 50 ferrovanadium powder is recycled;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 51.08%, C: 0.26%, Si: 1.17%, P: 0.041%, S: 0.020%, Al: 0.94%, particle size: 10-50 mm; 50 ferrovanadium powder: v: 51.08%, C: 0.26%, Si: 1.17%, P: 0.041%, S: 0.020%, Al: 0.94% and particle size <10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 92.84%, and the yield of 50 ferrovanadium is averagely improved by 2.56%.
Example 3
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 t of ferrovanadium-silicon hot slag, 0.072t of vanadium-aluminum waste, 1.6t of vanadium pentoxide, 0.912t of aluminum particles, 0.736t of iron particles, 0.192t of white ash and 0.32t of cold burden to obtain a uniformly mixed material;
the V content of the 50V-Fe-Si hot slag is as follows: 11.98 percent and the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 58.05%, Al: 41.83 percent and the granularity is less than 1 mm;
the vanadium pentoxide comprises the following components: v2O5：98.09%、P：0.034%、S：0.021%、K2O+Na2O: 0.81 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm;
the aluminum particle comprises the following components: al: 99.09%, particle size: 1.0-6.0 mm;
iron particles: fe: 99.11%, particle size: 1.0-8.0 mm;
lime: CaO: 88.76%, P: 0.04%, activity more than or equal to 300ml, granularity: 10-20 mm;
cooling: v: 50.78%, Si: 1.09%, P: 0.061%, Al: 1.17%, particle size <10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and igniting by an electrode to enable the materials to react, wherein the ignition voltage of the electrode is 160V, the current is 7894A, the smelting temperature is 1670 ℃, and the electrifying time of the electrode is 12.08 min;
(3) naturally cooling for 30 hours after smelting is finished, removing the furnace after cooling, slagging off, separating slag from metal, selling a slag layer for building material enterprises, crushing and screening ferrovanadium ingots to obtain 50 ferrovanadium qualified products and 50 ferrovanadium powder, and recycling the 50 ferrovanadium powder;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 50.85%, C: 0.24%, Si: 1.12%, P: 0.048%, S: 0.027%, Al: 0.98%, particle size: 10-50 mm; 50 ferrovanadium powder: v: 50.85%, C: 0.24%, Si: 1.12%, P: 0.048%, S: 0.027%, Al: 0.98% and granularity less than 10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 93.04%, and the yield of 50 ferrovanadium is averagely improved by 2.15%.
Example 4
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 t of ferrovanadium-silicon hot slag, 0.08t of vanadium-aluminum waste, 1.6t of vanadium pentoxide, 0.96t of aluminum particles, 0.8t of iron particles, 0.24t of white ash and 0.32t of cold materials to obtain uniformly mixed materials;
the V content of the 50V-Fe-Si hot slag is as follows: 13.26 percent and the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 55.38%, Al: 44.56 percent, the granularity is less than 1 mm;
the vanadium pentoxide comprises the following components: v2O5：98.27%、P：0.046%、S：0.025%、K2O+Na2O: 0.94% block size≤25mm×25mm；
The aluminum particle comprises the following components: al: 99.23%, particle size: 2.0-4.0 mm;
iron particles: fe: 99.31%, particle size: 3.0-8.0 mm;
lime: CaO: 87.32%, P: 0.042%, activity more than or equal to 300ml, granularity: 10-18 mm;
cooling: v: 48.92%, Si: 1.63%, P: 0.052%, Al: 1.45 percent and the granularity is less than 10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and igniting by an electrode to enable the materials to react, wherein the ignition voltage of the electrode is 165V, the current is 7890A, the smelting temperature is 1625 ℃, and the electrifying time of the electrode is 8.24 min;
(3) naturally cooling for 26.2 hours after smelting is finished, removing the furnace after cooling, slagging off, separating slag from metal, selling a slag layer for building material enterprises, crushing and screening a ferrovanadium alloy ingot to obtain a qualified ferrovanadium product 50 and ferrovanadium powder 50, and recovering the ferrovanadium powder 50;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 48.73%, C: 0.31%, Si: 1.43%, P: 0.052%, S: 0.033%, Al: 1.21%, particle size: 10-45 mm; 50 ferrovanadium powder: v: 48.73%, C: 0.31%, Si: 1.43%, P: 0.052%, S: 0.033%, Al: 1.21% and a particle size <10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 90.56%, and the yield of 50 ferrovanadium is averagely improved by 2.4%.
Example 5
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 t of ferrovanadium-silicon hot slag, 0.036t of vanadium-aluminum waste, 1.8t of vanadium pentoxide, 0.9t of aluminum particles, 0.72t of iron particles, 0.09t of white ash and 0.18t of cold materials to obtain uniformly mixed materials;
the V content of the 50V-Fe-Si hot slag is as follows: 9.78 percent and the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 58.34%, Al: 40.62 percent and the granularity is less than 1 mm;
the vanadium pentoxide comprises the following components: v2O5：98.53%、P：0.047%、S：0.026%、K2O+Na2O: 1.27 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm;
the aluminum particle comprises the following components: al: 99.37%, particle size: 1.0-5.0 mm;
iron particles: fe: 99.22%, particle size: 2.0-8.0 mm;
lime: CaO: 86.43%, P: 0.046%, activity more than or equal to 300ml, granularity: 11-19 mm;
cooling: v: 53.12%, Si: 2.01%, P: 0.074%, Al: 1.83%, particle size <10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by an electro-aluminothermic process, and igniting by an electrode to enable the materials to react, wherein the ignition voltage of the electrode is 165V, the current is 7890A, the smelting temperature is 1755 ℃, and the electrifying time of the electrode is 6.28 min;
(3) naturally cooling for 23.1h after smelting is finished, removing the furnace after cooling, slagging off, separating slag from metal, selling a slag layer for building material enterprises, crushing and screening a ferrovanadium alloy ingot to obtain a qualified ferrovanadium product 50 and ferrovanadium powder 50, and recovering the ferrovanadium powder 50;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 53.07%, C: 0.29%, Si: 1.76%, P: 0.057%, S: 0.035%, Al: 1.45%, particle size: 20-48 mm; 50 ferrovanadium powder: v: 53.07%, C: 0.29%, Si: 1.76%, P: 0.057%, S: 0.035%, Al: 1.45 percent and the granularity is less than 10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 94.27%, and the yield of 50 ferrovanadium is averagely improved by 2.7%.
Example 6
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 t of ferrovanadium-silicon hot slag, 0.072t of vanadium-aluminum waste, 1.8t of vanadium pentoxide, 0.954t of aluminum particles, 0.774t of iron particles, 0.18t of white ash and 0.27t of cold materials to obtain uniformly mixed materials;
the V content of the 50V-Fe-Si hot slag is as follows: 14.35 percent and the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 59.43%, Al: 41.38 percent and the granularity is less than 1 mm;
the vanadium pentoxide comprises the following components: v2O5：98.35%、P：0.030%、S：0.020%、K2O+Na2O: 1.39 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm;
the aluminum particle comprises the following components: al: 99.62%, particle size: 2.0-5.0 mm;
iron particles: fe: 99.54%, particle size: 3.0-7.0 mm;
lime: CaO: 88.02%, P: 0.053%, activity is more than or equal to 300ml, granularity: 12-18 mm;
cooling: v: 54.21%, Si: 2.53%, P: 0.092%, Al: 2.28%, particle size <10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and reacting the materials by igniting an electrode, wherein the ignition voltage of the electrode is 170V, the current is 7900A, the smelting temperature is 1788 ℃, and the electrifying time of the electrode is 9.25 min;
(3) naturally cooling for 22.5 hours after smelting is finished, removing the furnace after cooling, slagging off, separating slag from metal, selling a slag layer for building material enterprises, crushing and screening a ferrovanadium alloy ingot to obtain a qualified ferrovanadium product 50 and ferrovanadium powder 50, and recovering the ferrovanadium powder 50;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 49.34%, C: 0.37%, Si: 1.32%, P: 0.038%, S: 0.022%, Al: 1.08%, particle size: 13-42 mm; 50 ferrovanadium powder: v: 49.34%, C: 0.37%, Si: 1.32%, P: 0.038%, S: 0.022%, Al: 1.08% and the granularity is less than 10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 92.04%, and the yield of 50 ferrovanadium is averagely improved by 2.3%.
Example 7
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 50 t of ferrovanadium hot slag 0.081t, 0.063t of vanadium-aluminum waste, 1.8t of vanadium pentoxide, 1.026t of aluminum particles, 0.828t of iron particles, 0.216t of white ash and 0.36t of cold materials to obtain uniformly mixed materials;
the V content of the 50V-Fe-Si hot slag is as follows: 9.0 percent and the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 59.99%, Al: 40 percent, the granularity is less than 1 mm;
oxygen fiveThe vanadium dioxide comprises the following components: v2O5：98.0%、P：0.042%、S：0.030%、K2O+Na2O: 1.12 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm;
the aluminum particle comprises the following components: al: 99.62%, particle size: 3.0-6.0 mm;
iron particles: fe: 99.51%, particle size: 1.0-5.0 mm;
lime: CaO: 86%, P: 0.057%, activity more than or equal to 300ml, granularity: 14-20 mm;
cooling: v: 48%, Si: 2.27%, P: 0.10%, Al: 2.05 percent and the granularity is less than 10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and igniting by an electrode to enable the materials to react, wherein the ignition voltage of the electrode is 170V, the current is 7000A, the smelting temperature is 1600 ℃, and the electrifying time of the electrode is 15 min;
(3) naturally cooling for 20 hours after smelting is finished, removing the furnace after cooling, slagging off, separating slag from metal, selling a slag layer for building material enterprises, crushing and screening ferrovanadium ingots to obtain 50 ferrovanadium qualified products and 50 ferrovanadium powder, and recycling the 50 ferrovanadium powder;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 48%, C: 0.29%, Si: 2.0%, P: 0.046%, S: 0.04%, Al: 1.13%, particle size: 25-50 mm; 50 ferrovanadium powder: v: 48%, C: 0.29%, Si: 2.0%, P: 0.046%, S: 0.04%, Al: 1.13% and a particle size <10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 90.0%, and the yield of 50 ferrovanadium is averagely improved by 3%.
Example 8
The method for comprehensively recycling vanadium-containing solid waste resources comprises the following steps:
(1) uniformly mixing 0.09t of 50V-Fe-Si hot slag, 0.09t of V-Al waste, 1.8t of vanadium pentoxide, 1.08t of aluminum particles, 0.9t of iron particles, 0.27t of white ash and 0.54t of cold materials to obtain uniformly mixed materials;
the V content of the 50V-Fe-Si hot slag is as follows: 15.0 percent and the granularity is less than or equal to 30 mm;
the vanadium-aluminum waste comprises the following main components: v: 55%, Al: 45 percent, and the granularity is less than 1 mm;
the vanadium pentoxide comprises the following components: v2O5：98.42%、P：0.05%、S：0.022%、K2O+Na2O: 1.5 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm;
the aluminum particle comprises the following components: al: 99.0%, particle size: 1.0-3.0 mm;
iron particles: fe: 99.0%, particle size: 4.0-8.0 mm;
lime: CaO: 87.35%, P: 0.06%, activity more than or equal to 300ml, granularity: 10-15 mm;
cooling: v: 55%, Si: 3.0%, P: 0.065%, Al: 2.5% and the granularity is less than 10 mm;
(2) putting the uniformly mixed materials into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and reacting the materials by igniting an electrode, wherein the ignition voltage of the electrode is 180V, the current is 8000A, the smelting temperature is 1800 ℃, and the electrifying time of the electrode is 5 min;
(3) naturally cooling for 27h after smelting is finished, removing the furnace after cooling, slagging off, separating slag from metal, selling a slag layer for building material enterprises, crushing and screening ferrovanadium ingots to obtain 50 ferrovanadium qualified products and 50 ferrovanadium powder, and recycling the 50 ferrovanadium powder;
crushing and screening to obtain a qualified product of 50 ferrovanadium: v: 55%, C: 0.40%, Si: 1.55%, P: 0.06%, S: 0.018%, Al: 1.5%, particle size: 10-30 mm; 50 ferrovanadium powder: v: 55%, C: 0.40%, Si: 1.55%, P: 0.06%, S: 0.018%, Al: 1.5% and the granularity is less than 10 mm.
In the embodiment, the recovery rate of the metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and the vanadium-aluminum waste is 95.0%, and the yield of 50 ferrovanadium is averagely improved by 2%.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.
Claims (5)
1. A method for comprehensively recycling vanadium-containing solid waste resources is characterized by comprising the following steps:
(1) uniformly mixing 50 vanadium-iron-silicon hot slag, vanadium-aluminum waste, vanadium pentoxide, aluminum particles, iron particles, white ash and cold materials according to the mass ratio of 50 vanadium-iron-silicon hot slag to 0.03-0.05: 1 vanadium pentoxide, 0.02-0.05: 1 vanadium pentoxide to vanadium-aluminum waste to 1, 0.50-0.60: 1 aluminum particles to vanadium pentoxide, 0.40-0.50: 1 iron particles to vanadium pentoxide, 0.05-0.15: 1 white ash to vanadium pentoxide, and 0.10-0.30: 1 cold materials to obtain uniformly mixed materials; the V content of the 50V-Fe-Si hot slag is as follows: 9.0-15.0% and the granularity is less than or equal to 30 mm; the vanadium-aluminum waste comprises the following main components: v: 55.00-59.99%, Al: 40-45% and the granularity is less than 1 mm;
(2) putting the mixed material into an electric furnace, smelting 50 ferrovanadium by adopting an electro-aluminothermic process, and reacting the material by igniting an electrode, wherein the ignition voltage of the electrode is 160-180V, the current is 7000-8000A, the smelting temperature is 1600-1800 ℃, and the electrifying time of the electrode is 5-15 min;
(3) and naturally cooling for 20-30 h after smelting is finished, removing the furnace after cooling to separate slag from metal, selling a slag layer for building material enterprises, crushing and screening a ferrovanadium alloy ingot to obtain a qualified ferrovanadium product 50 and ferrovanadium powder 50, and recovering the ferrovanadium powder 50.
2. The method for comprehensively recycling vanadium-containing solid waste resources according to claim 1, wherein the vanadium pentoxide component in the step (1) is: v2O5≥98%、P≤0.050%、S≤0.030%、 K2O+Na2O is less than or equal to 1.5 percent, and the lumpiness is less than or equal to 25mm multiplied by 25 mm; the aluminum particle comprises the following components: al is more than or equal to 99.0 percent, and the granularity is as follows: 1.0-6.0 mm; iron particles: fe is more than or equal to 99.0 percent, and the particle size is as follows: 1.0-8.0 mm; lime: CaO is more than or equal to 86.0 percent, P is less than or equal to 0.06 percent, activity is more than or equal to 300ml, and granularity: 10-20 mm; cooling: v: 48.0-55.0%, less than or equal to 3.0% of Si, less than or equal to 0.10% of P, less than or equal to 2.5% of Al, and granularity<10mm。
3. The method for comprehensively recycling vanadium-containing solid waste resources according to claim 1 or 2, characterized in that 50 vanadium iron qualified products are obtained after crushing and screening in the step (3): v: 48.0-55.0%, C is less than or equal to 0.40%, Si is less than or equal to 2.0%, P is less than or equal to 0.06%, S is less than or equal to 0.04%, Al is less than or equal to 1.5%, and the particle size is as follows: 10-50 mm.
4. The method for comprehensively recycling vanadium-containing solid waste resources according to claim 1 or 2, characterized in that 50 ferrovanadium powder is obtained after crushing and screening in the step (3): v: 48.0-55.0%, C is less than or equal to 0.40%, Si is less than or equal to 2.0%, P is less than or equal to 0.06%, S is less than or equal to 0.04%, Al is less than or equal to 1.5%, and the granularity is less than 10 mm.
5. The method for comprehensively recycling vanadium-containing solid waste resources according to claim 1 or 2, characterized in that the recovery rate of metal vanadium of the vanadium-containing solid waste 50 ferrovanadium silicon hot slag and vanadium aluminum waste material is 90.0-95.0%, and the yield of 50 ferrovanadium is averagely increased by 2-3%.
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| CN113621870A (en) * | 2021-07-08 | 2021-11-09 | 河钢承德钒钛新材料有限公司 | Application and application method of vanadium-containing cold material |
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| CN114293088A (en) * | 2021-11-17 | 2022-04-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting FeV80 by using vanadium-aluminum residual alloy |
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| CN102115821B (en) * | 2010-09-13 | 2013-01-23 | 攀钢集团钢铁钒钛股份有限公司 | Method for smelting ferrovanadium |
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