CN106744974A - A kind of method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent - Google Patents
A kind of method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent Download PDFInfo
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- CN106744974A CN106744974A CN201611144651.3A CN201611144651A CN106744974A CN 106744974 A CN106744974 A CN 106744974A CN 201611144651 A CN201611144651 A CN 201611144651A CN 106744974 A CN106744974 A CN 106744974A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 87
- 239000002028 Biomass Substances 0.000 title claims abstract description 83
- 239000002006 petroleum coke Substances 0.000 title claims abstract description 66
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 60
- 239000010703 silicon Substances 0.000 title claims abstract description 60
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000004913 activation Effects 0.000 title claims abstract description 22
- 238000005453 pelletization Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 11
- 239000012467 final product Substances 0.000 claims abstract description 3
- 238000005336 cracking Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 238000003763 carbonization Methods 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 18
- 230000009467 reduction Effects 0.000 abstract description 12
- 239000003610 charcoal Substances 0.000 abstract description 10
- 239000000377 silicon dioxide Substances 0.000 abstract description 9
- 230000009257 reactivity Effects 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 19
- 238000003723 Smelting Methods 0.000 description 13
- 238000006722 reduction reaction Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000470 constituent Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 239000012778 molding material Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 241000758789 Juglans Species 0.000 description 5
- 235000009496 Juglans regia Nutrition 0.000 description 5
- 239000010903 husk Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 235000020234 walnut Nutrition 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 241000209140 Triticum Species 0.000 description 4
- 235000021307 Triticum Nutrition 0.000 description 4
- 240000008042 Zea mays Species 0.000 description 4
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- 235000009973 maize Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 239000010902 straw Substances 0.000 description 4
- 241000609240 Ambelania acida Species 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 244000062793 Sorghum vulgare Species 0.000 description 2
- 239000010905 bagasse Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 235000019713 millet Nutrition 0.000 description 2
- 235000014571 nuts Nutrition 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/021—Preparation
- C01B33/023—Preparation by reduction of silica or free silica-containing material
- C01B33/025—Preparation by reduction of silica or free silica-containing material with carbon or a solid carbonaceous material, i.e. carbo-thermal process
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to the method that a kind of biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent, belong to non-ferrous metal metallurgy technical field.Biomass material is dried, crushed, is hot pressed into section bar and heat and charing process by the present invention, cooling, is crushed and is obtained biomass carbon；Petroleum coke is dried, is crushed；Then biomass carbon is well mixed with petroleum coke, is hot pressed into pelletizing and obtains final product industrial silicon carbonaceous reducing agent.Industrial silicon carbonaceous reducing agent prepared by this method has the features such as ratio resistance is high, reactivity is high, can improve 5 ~ 10% silica percent reduction, reduces reducing agent unit consumption, reduce the use of charcoal or wooden unit, it is to avoid a large amount of disafforestations bring serious ecological problem.
Description
Technical field
The present invention relates to the method that a kind of biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent, belonging to has
Non-ferrous metal technical field of smelting.
Background technology
Petroleum coke is higher because of fixed carbon content, and volatile matter content is relatively low, and combustion heat value is higher, so as to be widely used in
Smelting industrial silicon is with composite carbonaceous reducing agent（Mass ratio is more than 30%）, during smelting industrial silicon, its fixation higher
Carbon is the primary reducing agent for participating in silica carbon thermal reduction.It is one but petroleum coke is the principal by product of petroleum refining process
Plant the carbon material with graphite-like structure.And smelting industrial silicon is carried out in high-temperature electric resistance furnace, arc smelting to raw material, especially
It is that carbon raw material requirement has ratio resistance higher, it is ensured that the underthrust depth of electrode and the electric loss of energy of reduction.On the other hand
The graphite-like structure of petroleum coke causes that petroleum coke has relatively low reduction reaction activity.Therefore, during petroleum coke use, i.e.,
Make the fixed carbon content of petroleum coke higher, but can not vast scale use petroleum coke.Currently in order to petroleum coke performance deficiency is made up,
Charcoal or wooden unit and petroleum coke are mixed as reaching a preferable reduced level after additive, but charcoal or wooden unit are
Obtained with disafforestation, sacrificialing environment as cost, a large amount of natural calamities brought with mankind's environmental consciousness and environmental disruption,
Deforestation has been well controlled, or even prohibits disafforestation in plain text.Therefore for charcoal or the source of wooden unit
It is inhibited, develops that a kind of can substitute charcoal or wooden unit to be used to the reducing agent of smelting industrial silicon production be sustainable development
Necessary ways.
Biomass belong to a kind of agricultural byproducts, it is most of burned or stored up rotted, burning can be produced
Volume of smoke and CO2Deng having certain destructiveness to environment, substantial amounts of space is stored up so as to cause to occupy.Biomass have with
The similar property of timber, alkali and alkaline earth metal ions higher are contained with volatile matter content higher, and in ash content, so that
With reactivity higher, from the point of view of apparent form, biomass have more flourishing gap structure.Therefore biomass material passes through
Charing obtain biomass carbon for substitute charcoal and petroleum coke to be mixed with smelting industrial silicon production reducing agent be that a kind of have can
Continue, the approach of better economic benefit.
The content of the invention
For needing to consume substantial amounts of charcoal or wooden unit in current smelting industrial silicon production and application reducing agent, and charcoal and
Wooden unit source needs to cut down substantial amounts of forest, so that heavy damage ecological environment.It is sustainable it is an object of the invention to provide one kind
Charcoal or wooden unit can be substituted is used for the industrial silicon carbonaceous reducing agent of smelting industrial silicon production.
A kind of method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent, comprises the following steps that：
（1）Biomass material is dried, crush, be hot pressed into section bar；
（2）By step（1）Gained section bar heat and charing process, then cools down, broken obtains biomass carbon；
（3）Petroleum coke is dried, is crushed；
（4）By step（2）Gained biomass carbon and step（4）Gained petroleum coke is well mixed, and is hot pressed into pelletizing and obtains final product industrial silicon
Carbonaceous reducing agent.
The step（1）Middle biomass material can use walnut shell, bagasse, rice husk, pine nut shell, maize straw, wheat
One or any various mixture such as shell, wheat stalk；
The step（1）Middle biomass material is crushed to granularity no more than 30mm；
The step（1）The temperature of middle hot pressing is 80 ~ 120 DEG C, and pressure is 20 ~ 50MPa;
The step（1）Section bar middle part have more than one through hole, through-hole diameter in 10 ~ 30mm, make section bar carbonize operation in
It is heated evenly, programming rate is fast, charing is thorough；
The step（2）5~30 DEG C/min of heating rate of middle heating；
The step（2）Middle carbonization temperature is 250~900 DEG C, and carbonization time is 30~240min；
The step（2）Middle biomass carbon particle size after cracking is not more than 0.2mm；
The step（2）The constituent mass percentage of middle biomass carbon be fixed carbon 65 ~ 85%, volatile matter 8 ~ 25%, moisture 1 ~ 5%,
Ash content is less than 4%, it is ensured that biomass carbon has porosity and reactivity higher higher；The ratio resistance of biomass carbon is not
Less than 4000 μ Ω m, ratio resistance is more high more is conducive to industrial silicon furnace to smelt production, even more for the oil relatively low with ratio resistance
Jiao is allocated, to meet requirement of the smelting industrial silicon to carbonaceous reducing agent ratio resistance；
The step（3）The mass percent of fixed carbon is 75 ~ 90% in petrochina Jiao, the mass percent of volatile matter for 5 ~
10%, the mass percent of moisture is not more than 5%, and the mass percent of ash content is less than 0.5%, and ratio resistance is not less than 2000 μ Ω m；
The step（3）Petrochina Jiao's particle size after cracking accounts for more than 50% for 0.2 ~ 0.3mm；
The step（4）Middle biomass carbon is 20 ~ 40 with the mass ratio of petroleum coke:80~60；
The step（4）The temperature of middle hot pressing is 80 ~ 120 DEG C, and pressure is 20 ~ 50MPa；
The step（4）The middle a diameter of 30 ~ 120mm of pelletizing；
The industrial silicon carbonaceous reducing agent ratio resistance be not less than 3500 μ Ω m, it is to avoid in smelting industrial silicon production process because than
Resistance is low to cause arc loss serious, causes to be moved on electrode position, the reduction of electric arc furnaces bottom temperature, yield reduction, furnace bottom rising,
Mineral hot furnace blowing out etc. endangers.
The beneficial effects of the invention are as follows：
（1）The inventive method comprehensively utilizes agricultural byproducts, and by being recovered according to a price agricultural byproducts, increased farmers' income；
（2）Industrial silicon carbonaceous reducing agent of the invention is produced for smelting industrial silicon, reduces the use of charcoal or wooden unit, it is to avoid
A large amount of disafforestations bring serious ecological problem；
（3）Industrial silicon carbonaceous reducing agent of the invention, has activation synergy to petroleum coke using biomass carbon, is ensureing former
The proportional quantity of petroleum coke is increased on the basis of material reactivity, so as to reduce the consumption of reducing agent raw material on year-on-year basis, is improve
The utilization rate of raw material, reduces raw material consumption, further reduces smelting industrial silicon production cost；
（4）The present invention has ratio resistance and reactivity higher higher, the oil with high specific resistance using biomass carbon
Burnt mixing prepares industrial silicon carbonaceous reducing agent, and its ratio resistance is high, reactivity is high, can improve 5 ~ 10% silica percent reduction, drop
Low-reductant unit consumption.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
The present invention is described in further detail with reference to specific embodiment, but protection scope of the present invention is not limited
In the content.
Embodiment 1：As shown in figure 1, a kind of biomass carbon collaboration activation petroleum coke prepares the side of industrial silicon carbonaceous reducing agent
Method, comprises the following steps that：
（1）The biomass mixed material such as rice husk, walnut shell and maize straw is dried, granularity is crushed to less than 30mm,
Temperature is 80 DEG C, and pressure is under the conditions of 50MPa, there is 1 through hole of a diameter of 30mm at hot pre-molding material, its medium section middle part；
（2）Under conditions of 5 DEG C/min of heating rate, by step（1）Gained section bar is heated to 250 DEG C and carries out charing process
240min, the through hole in the middle part of section bar makes section bar be heated evenly in operation is carbonized, and programming rate is fast, and charing is thorough；It is cooled to room
Temperature, is crushed to granularity no more than 0.2mm and obtains biomass carbon, and the constituent mass percentage of biomass carbon is fixed carbon 75%, volatilization
Divide 15%, moisture 3%, ash content is less than 4%；The ratio resistance of biomass carbon is 5500 μ Ω m；
（3）By petroleum coke drying, particle size after cracking for 0.2 ~ 0.3mm accounts for more than 50%；The quality percentage of fixed carbon wherein in petroleum coke
Number is 75%, and the mass percent of volatile matter is 10%, and the mass percent of moisture is 5%, and the mass percent of ash content is 0.5%,
Ratio resistance is 3000 μ Ω m；
（4）Mass ratio according to biomass carbon and petroleum coke is 20:80 ratio, by step（2）Gained biomass carbon and step
（3）Gained petroleum coke is mixed evenly, and is 80 DEG C in temperature, and pressure is for hot precompressed is into pelletizing under the conditions of 50MPa, and pelletizing is a diameter of
30mm, ratio resistance is 3552 μ Ω m, and pelletizing is industrial silicon carbonaceous reducing agent.
To 200kg silicas it is that every batch carries out industrial silicon production, the metallic silicon product purity of production by pelletizing reducing agent
It is 99.45%, silica percent reduction improves 5%.
Embodiment 2：As shown in figure 1, a kind of biomass carbon collaboration activation petroleum coke prepares the side of industrial silicon carbonaceous reducing agent
Method, comprises the following steps that：
（1）The biomass mixed materials such as pine nut shell, millet stalk, maize straw are dried, granularity is crushed to less than 28mm,
It it is 90 DEG C in temperature, pressure is hot pre-molding material under the conditions of 40MPa, there are 2 through holes of a diameter of 10mm at its medium section middle part；
（2）Under conditions of 10 DEG C/min of heating rate, by step（1）Gained section bar is heated to 500 DEG C and carries out charing process
200min, the through hole in the middle part of section bar makes section bar be heated evenly in operation is carbonized, and programming rate is fast, and charing is thorough；It is cooled to room
Temperature, is crushed to granularity no more than 0.2mm and obtains biomass carbon, and the constituent mass percentage of biomass carbon is fixed carbon 80%, volatilization
Divide 13%, moisture 3%, ash content is less than 0.4%；The ratio resistance of biomass carbon is 5200 μ Ω m；
（3）By petroleum coke drying, particle size after cracking for 0.2 ~ 0.3mm accounts for more than 60%；The quality percentage of fixed carbon wherein in petroleum coke
Number is 80%, and the mass percent of volatile matter is 8%, and the mass percent of moisture is 4%, and the mass percent of ash content is 0.45%,
Ratio resistance is 2600 μ Ω m；
（4）Mass ratio according to biomass carbon and petroleum coke is 25:75 ratio, by step（2）Gained biomass carbon and step
（3）Gained petroleum coke is mixed evenly, and being 90 DEG C in temperature, pressure be under the conditions of 40MPa hot precompressed into pelletizing, pelletizing diameter
It is 50mm, ratio resistance is 3550 μ Ω m, and pelletizing is industrial silicon carbonaceous reducing agent.
To 200kg silicas it is that every batch carries out industrial silicon production, the metallic silicon product purity of production by pelletizing reducing agent
It is 99.15%, silica percent reduction improves 6%.
Embodiment 3：As shown in figure 1, a kind of biomass carbon collaboration activation petroleum coke prepares the side of industrial silicon carbonaceous reducing agent
Method, comprises the following steps that：
（1）The biomass mixed material such as bagasse, corncob and wheat stalk is dried, granularity is crushed to less than 25mm,
It it is 100 DEG C in temperature, pressure is hot pre-molding material under the conditions of 30MPa, its medium section middle part has that 2 a diameter of 20mm's is logical
Hole；
（2）Under conditions of 15 DEG C/min of heating rate, by step（1）Gained section bar is heated to 600 DEG C and carries out charing process
180min, the through hole in the middle part of section bar makes section bar be heated evenly in operation is carbonized, and programming rate is fast, and charing is thorough；It is cooled to room
Temperature, is crushed to granularity no more than 0.2mm and obtains biomass carbon, and the constituent mass percentage of biomass carbon is fixed carbon 65%, volatilization
Divide 20%, moisture 8%, ash content is less than 3%；The ratio resistance of biomass carbon is 6000 μ Ω m；
（3）By petroleum coke drying, particle size after cracking for 0.2 ~ 0.3mm accounts for more than 65%；The quality percentage of fixed carbon wherein in petroleum coke
Number is 85%, and the mass percent of volatile matter is 6%, and the mass percent of moisture is 4%, and the mass percent of ash content is 0.4%, than
Resistance is 2300 μ Ω m；
（4）Mass ratio according to biomass carbon and petroleum coke is 30:70 ratio, by step（2）Gained biomass carbon and step
（3）Gained petroleum coke is mixed evenly, and is being 100 DEG C in temperature, and pressure is for hot precompressed is into pelletizing under the conditions of 30MPa, and pelletizing is straight
Footpath is 60mm, and ratio resistance is 3750 μ Ω m, and pelletizing is industrial silicon carbonaceous reducing agent.
To 200kg silicas it is that every batch carries out industrial silicon production, the metallic silicon product purity of production by pelletizing reducing agent
It is 99.55%, silica percent reduction improves 7%.
Embodiment 4：As shown in figure 1, a kind of biomass carbon collaboration activation petroleum coke prepares the side of industrial silicon carbonaceous reducing agent
Method, comprises the following steps that：
（1）The biomass mixed material such as rice husk, walnut shell and wheat husk is dried, granularity is crushed to less than 20mm, in temperature
It it is 110 DEG C, pressure is hot pre-molding material under the conditions of 25MPa, there are 3 through holes of a diameter of 15mm at its medium section middle part；
（2）Under conditions of 20 DEG C/min of heating rate, by step（1）Gained section bar is heated to 700 DEG C and carries out charing process
120min, the through hole in the middle part of section bar makes section bar be heated evenly in operation is carbonized, and programming rate is fast, and charing is thorough；It is cooled to room
Temperature, is crushed to granularity no more than 0.2mm and obtains biomass carbon, and the constituent mass percentage of biomass carbon is fixed carbon 80%, volatilization
Divide 12%, moisture 5%, ash content is less than 3%；The ratio resistance of biomass carbon is 5000 μ Ω m；
（3）By petroleum coke drying, particle size after cracking for 0.2 ~ 0.3mm accounts for more than 70%；The quality percentage of fixed carbon wherein in petroleum coke
Number is 82%, and the mass percent of volatile matter is 15%, and the mass percent of moisture is 2%, and the mass percent of ash content is 0.35%,
Ratio resistance is 2400 μ Ω m；
（4）Mass ratio according to biomass carbon and petroleum coke is 35:65 ratio, by step（2）Gained biomass carbon and step
（3）Gained petroleum coke is mixed evenly, and is being 110 DEG C in temperature, and pressure is for hot precompressed is into pelletizing under the conditions of 25MPa, and pelletizing is straight
Footpath is 70mm, and ratio resistance is 3660 μ Ω m, and pelletizing is industrial silicon carbonaceous reducing agent.
To 200kg silicas it is that every batch carries out industrial silicon production, the metallic silicon product purity of production by pelletizing reducing agent
It is 99.23%, silica percent reduction improves 8.5%.
Embodiment 5：As shown in figure 1, a kind of biomass carbon collaboration activation petroleum coke prepares the side of industrial silicon carbonaceous reducing agent
Method, comprises the following steps that：
（1）The biomass mixed material such as rice husk, walnut shell and maize straw is dried, granularity is crushed to less than 20mm,
Temperature is 115 DEG C, and pressure is hot pre-molding material under the conditions of 22MPa, and there are 4 through holes of a diameter of 10mm at its medium section middle part；
（2）Under conditions of 25 DEG C/min of heating rate, by step（1）Gained section bar is heated to 800 DEG C and carries out charing process
90min, the through hole in the middle part of section bar makes section bar be heated evenly in operation is carbonized, and programming rate is fast, and charing is thorough；It is cooled to room
Temperature, is crushed to granularity no more than 0.2mm and obtains biomass carbon, and the constituent mass percentage of biomass carbon is fixed carbon 82%, volatilization
Divide 10%, moisture 5%, ash content is less than 3%；The ratio resistance of biomass carbon is 4800 μ Ω m；
（3）By petroleum coke drying, particle size after cracking for 0.2 ~ 0.3mm accounts for more than 60%；The quality percentage of fixed carbon wherein in petroleum coke
Number is 88%, and the mass percent of volatile matter is 6%, and the mass percent of moisture is 3%, and the mass percent of ash content is 0.3%, than
Resistance is 2300 μ Ω m；
（4）Mass ratio according to biomass carbon and petroleum coke is 40:60 ratio, by step（2）Gained biomass carbon and step
（3）Gained petroleum coke is mixed evenly, and is being 115 DEG C in temperature, and pressure is under the conditions of 22MPa, hot precompressed is into pelletizing, and pelletizing is straight
Footpath is 100mm, and ratio resistance is 3600 μ Ω m, and pelletizing is industrial silicon carbonaceous reducing agent.
To 200kg silicas it is that every batch carries out industrial silicon production, the metallic silicon product purity of production by pelletizing reducing agent
It is 99.35%, silica percent reduction improves 10%.
Embodiment 6：As shown in figure 1, a kind of biomass carbon collaboration activation petroleum coke prepares the side of industrial silicon carbonaceous reducing agent
Method, comprises the following steps that：
（1）The biomass mixed material such as millet stalk, walnut shell and corncob is dried, granularity is crushed to less than 30mm,
Temperature be 120 DEG C, pressure be under the conditions of the hot pre-molding materials of 20MPa, its medium section middle part have 4 through holes of a diameter of 5mm；
（2）Under conditions of 30 DEG C/min of heating rate, by step（1）Gained section bar is heated to 900 DEG C and carries out charing process
30min, the through hole in the middle part of section bar makes section bar be heated evenly in operation is carbonized, and programming rate is fast, and charing is thorough；It is cooled to room
Temperature, is crushed to granularity no more than 0.2mm and obtains biomass carbon, and the constituent mass percentage of biomass carbon is fixed carbon 85%, volatilization
Divide 8%, moisture 4%, ash content is less than 3%；The ratio resistance of biomass carbon is 4200 μ Ω m；
（3）By petroleum coke drying, particle size after cracking for 0.2 ~ 0.3mm accounts for more than 55%；The quality percentage of fixed carbon wherein in petroleum coke
Number is 90%, and the mass percent of volatile matter is 5%, and the mass percent of moisture is 2%, and the mass percent of ash content is 0.2%, than
Resistance is 2100 μ Ω m；
（4）Mass ratio according to biomass carbon and petroleum coke is 40:60 ratio, by step（2）Gained biomass carbon and step
（3）Gained petroleum coke is mixed evenly, and is being 120 DEG C in temperature, and pressure is for hot precompressed is into pelletizing under the conditions of 20MPa, and pelletizing is straight
Footpath is 120mm, and ratio resistance is 3529 μ Ω m, and pelletizing is industrial silicon carbonaceous reducing agent.
To 200kg silicas it is that every batch carries out industrial silicon production, the metallic silicon product purity of production by pelletizing reducing agent
It is 99.28%, silica percent reduction improves 10%.
Specific embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula, in the ken that those of ordinary skill in the art possess, can also make on the premise of present inventive concept is not departed from
Go out various change.
Claims (10)
1. a kind of method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent, it is characterised in that specific step
It is rapid as follows：
（1）Biomass material is dried, crush, be hot pressed into section bar；
（2）By step（1）Gained section bar heat and charing process, then cools down, broken obtains biomass carbon；
（3）Petroleum coke is dried, is crushed；
（4）By step（2）Gained biomass carbon and step（4）Gained petroleum coke is well mixed, and is hot pressed into pelletizing and obtains final product industrial silicon
Carbonaceous reducing agent.
2. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 1, it is special
Levy and be：Step（1）Middle biomass material is crushed to granularity no more than 30mm.
3. the method that biomass carbon collaboration activation petroleum coke according to claim 1 or claim 2 prepares industrial silicon carbonaceous reducing agent, its
It is characterised by：Step（1）There is more than one through hole at section bar middle part.
4. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 3, it is special
Levy and be：Step（2）Middle carbonization temperature is 250~900 DEG C, and carbonization time is 30~240min.
5. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 4, it is special
Levy and be：Step（2）Middle biomass carbon particle size after cracking is not more than 0.2mm.
6. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 1, it is special
Levy and be：Step（3）The mass percent of fixed carbon is 75 ~ 90% in petroleum coke, and the mass percent of volatile matter is 5 ~ 10%, water
The mass percent for dividing is not more than 5%, and the mass percent of ash content is less than 0.5%, and ratio resistance is not less than 2000 μ Ω m.
7. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 6, it is special
Levy and be：Step（3）Middle particle size after cracking accounts for more than 50% for 0.2 ~ 0.3mm.
8. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 4, it is special
Levy and be：Step（4）Middle biomass carbon is 20 ~ 40 with the mass ratio of petroleum coke:80~60.
9. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 4, it is special
Levy and be：Step（4）The temperature of middle hot pressing is 80 ~ 120 DEG C, and pressure is 20 ~ 50MPa.
10. the method that biomass carbon collaboration activation petroleum coke prepares industrial silicon carbonaceous reducing agent according to claim 4, it is special
Levy and be：Step（4）The middle a diameter of 30 ~ 120mm of pelletizing.
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| CN112897506A (en) * | 2021-03-25 | 2021-06-04 | 昆明理工大学 | Method for preparing industrial silicon reducing agent by using vinasse natural fermentation and cooperative reinforcement of petroleum coke |
| CN113060736A (en) * | 2021-04-12 | 2021-07-02 | 昆明理工大学 | Method for preparing industrial silicon reducing agent by using biomass and additive to synergistically strengthen natural fermentation of petroleum coke |
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| CN113060736A (en) * | 2021-04-12 | 2021-07-02 | 昆明理工大学 | Method for preparing industrial silicon reducing agent by using biomass and additive to synergistically strengthen natural fermentation of petroleum coke |
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