CN108796211A - A kind of method and calciner of the high titanium slag desulfurization of microwave fluosolids roasting - Google Patents
A kind of method and calciner of the high titanium slag desulfurization of microwave fluosolids roasting Download PDFInfo
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- CN108796211A CN108796211A CN201710283966.4A CN201710283966A CN108796211A CN 108796211 A CN108796211 A CN 108796211A CN 201710283966 A CN201710283966 A CN 201710283966A CN 108796211 A CN108796211 A CN 108796211A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/10—Roasting processes in fluidised form
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
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Abstract
The present invention relates to a kind of methods of microwave fluosolids roasting high titanium slag desulfurization, belong to non-ferrous metal metallurgy and secondary resource technical field of comprehensive utilization.This method include high titanium slag grinding and drying, microwave fluosolids roasting and room temperature washing and etc..Due to selecting microwave heating as mode of heating, and fluidised heating technique can improve the thermal efficiency of material, accelerate reaction speed, and the consumption of the energy is reduced from source, is achieved the purpose that energy-saving.Therefore the required equipment investment of the present invention and energy consumption reduce, for slag specimen sulfur-bearing weight meter 0.01% hereinafter, material is heated evenly, the reaction time is short after high titanium slag desulfurization, and the removal efficiency of sulphur is high, and for material without sintering phenomenon, loss is relatively low.
Description
Technical field
The present invention relates to a kind of methods and calciner of the high titanium slag desulfurization of microwave fluosolids roasting, belong to non-ferrous metal metallurgy
With cleaning technical field of resource comprehensive utilization.
Background technology
The Titanium performance excellent in many of Material Field, is widely used, and alloy, the material of titaniferous being capable of larger amplitudes
The various performances of the raising material of degree, in field of metallurgy, titanium is mainly used for the making of titanium dioxide and titanium sponge, due to titanium dioxide
It is one of the raw material of current better performances in the world, this makes titanium be widely used in industry-by-industry.
Titanium dioxide scientific name titanium dioxide is a kind of sufficiently stable oxide, has excellent optical property, medical performance
Deng with long-range foreground in industry-by-industry.Titanium dioxide is mainly used as the manufacture of titanium dioxide, and titanium dioxide is top in the world
One of pigment.The production method of titanium dioxide mainly has two kinds of sulfuric acid process and chloridising, since existing production method extracts two
The grade of titanium oxide is relatively low, so new method of purification is constantly found by people.
The high titanium slag that the present invention uses is the slag specimen after electro-smelting, is the trifling shape of black.Wherein, sulfur content is higher, no
Conducive to product is subsequently generated, so removing sulfur content therein while generating rutile to producing subsequent titanium series of products
Have great importance.
In order to preferably solve the defect of the prior art, the present invention is on summarizing existing technical foundation, by a large amount of
Experiment and analysis, the present inventor develop a kind of method of microwave fluosolids roasting high titanium slag desulfurization, solve and are producing artificial gold
The excessively high problem of sulfur content during red stone, provide synthetic rutile some special dimensions important function.
Invention content
Technical problems to be solved]
The object of the present invention is to provide a kind of methods of microwave fluosolids roasting high titanium slag desulfurization.
It is a further object to provide a kind of devices of microwave fluosolids roasting desulfurization.
Technical solution]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of methods of microwave fluosolids roasting high titanium slag desulfurization.
The step of processing method, is as follows:
A, grinding, drying
High titanium slag is ground using planetary ball mill, it is by weight 95% or more to take -150 ~+200 mesh, is used for
Water removal is dried in microwave device, and drying is to high titanium slag moisture in 0.1wt% hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating, using microwave heating as heat
Processing mode uses air as the carrier of fluosolids roasting, controls the flow velocity of air at 1.0 ~ 1.5 cubic metres per hour, then
Microwave heating treatment is carried out under conditions of 850 ~ 1050 DEG C of temperature, after reaching microwave heating temperature, is kept the temperature, soaking time
1 ~ 2h obtains the high titanium slag after microwave fluosolids roasting, then
C, room temperature is washed
High titanium slag sample after the microwave fluosolids roasting that step B is obtained is 8 ~ 10 according to liquid-solid ratio:1 is uniformly mixed, and makes the mixing
Liquid carries out room temperature washing under the action of magnetic stirring apparatus, is then filtered and dry, obtains the roasting slag specimen of room temperature washing.
A preferred embodiment of the invention, in step, the frequency of the microwave device is 2400 ~
2500MHz。
According to another preferred method of implementation of the present invention, in step, the microwave power of the microwave drier
It is 915 ~ 945MHZ for 0.5 ~ 0.8kW, microwave frequency.
According to another preferred method of implementation of the present invention, in step, the time of the microwave drying is 3 ~ 5min.
A preferred embodiment of the invention, in stepb, the power of microwave is in the microwave heating equipment
0.5 ~ 1.5kW, microwave frequency are 2350 ~ 2550MHZ.
According to another preferred method of implementation of the present invention, in stepb, the material carrier of the fluosolids roasting is sky
Gas blasts air using air generator.
According to another preferred method of implementation of the present invention, in stepb, the air mass flow of the fluosolids roasting be 1.0 ~
1.5 cubic metres per hour.
A preferred embodiment of the invention, in step C, the time of the room temperature washing is 30 ~ 60min.
According to another preferred method of implementation of the present invention, in step C, the obtained microwave fluosolids roasting high titanium slag
Slag specimen after desulfurization, S contents are by weight 0.015% or less.
The present invention is described in more detail below.
The present invention relates to a kind of methods of microwave fluosolids roasting high titanium slag desulfurization.
The step of processing method, is as follows：
A, grinding, drying
High titanium slag is ground using planetary ball mill, it is by weight 95% or more to take -150 ~+200 mesh, is used for
Water removal is dried in microwave drier, and drying is to high titanium slag moisture in 0.1wt% hereinafter, obtaining the high titanium pre-processed
Slag.
The grinding device that the present invention uses is product available on the market, such as by Nanjing Nanda Instrument Co., Ltd. with quotient
The product of name of an article QM-3SP4 planetary ball mills sale.
The high titanium slag that the present invention uses is the slag specimen after electro-smelting, is the trifling shape of black.It needs to use planetary ball mill
It is ground, it is by weight 95% or more that take particle size range, which be -150 ~+200 mesh,.In the present invention, if the grain of slag specimen
Degree is less than -150 mesh, then the particle of material is bigger than normal, and the fluosolids roasting of high titanium slag can be made to reach non-uniform effect, if slag specimen
Granularity is more than+200 mesh, then the particle of material is too small, and high titanium slag material can be made to be diffused into instrument device, damages instrument.Therefore slag
The granularity of sample is reasonable in -150 ~+200 mesh ranges.
The high titanium slag be using microwave drier in microwave field dry 3 ~ 5min, the power of processing is 0.5 ~
0.8kW, microwave frequency are 915 ~ 945MHZ.
The time of the microwave drying of high-titanium slag can be such that the moisture of high titanium slag contains if drying time is less than 3min
Amount is higher, influences the fluosolids roasting of high titanium slag, if drying time is higher than 5min, the moisture in high titanium slag has been difficult to remove,
The excessive time can consume unnecessary energy consumption, and therefore, the dry time is reasonable in 3 ~ 5min.Preferably 3.5 ~
4.5min, more preferably 4.0 ~ 4.3min.
The microwave heating equipment that the present invention uses is product available on the market, such as by Kunming University of Science and Technology with trade name
The box reactor of microwave（HM）The product of sale.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating（Such as Fig. 1）, with microwave plus
Heat is used as heat treatment mode, uses air as the carrier of fluosolids roasting, and the flow velocity for controlling air is every small at 1.0 ~ 1.5 cubic metres
When, microwave heating treatment then is carried out under conditions of 850 ~ 1050 DEG C of temperature, after reaching microwave heating temperature, is kept the temperature,
1 ~ 2h of soaking time obtains the high titanium slag after microwave fluosolids roasting, then
The high titanium slag is heated to that the power that temperature is 850 ~ 1050 DEG C is 0.5 ~ 1.5kW, microwave frequency is in microwave field
2350~2550MHZ。
The high titanium slag is heated to doing fluosolids roasting under conditions of temperature is 850 ~ 1050 DEG C in microwave field.
The air mass flow of fluosolids roasting of the high titanium slag in microwave field, if air mass flow is less than 1.0 cubic metres
Per hour, then high titanium slag can be prevented from becoming fluidisation state well, if the flow of air is more than 1.5 cubic metres per hour,
High titanium slag fluidisation can be made violent, be unfavorable for the roasting of high titanium slag；Therefore, it is to close per hour that air mass flow, which is 1.0 ~ 1.5 cubic metres,
It manages appropriately；Preferably 1.15 ~ 1.4 cubic metres per hour, and more preferably 1.24 ~ 1.35 cubic metres per hour.
The soaking time of the microwave fluosolids roasting high titanium slag can react incomplete if soaking time is less than 1h,
If soaking time is higher than 2h, material, which has completely reacted, to be over, and the excessive time will produce a large amount of energy consumption；Therefore, it protects
The warm time is that 1 ~ 2h is rationally appropriate；Preferably 1.2 ~ 1.85h, more preferably 1.5 ~ 1.65h.
C, room temperature is washed
High titanium slag sample after the microwave fluosolids roasting that step B is obtained is 8 ~ 10 according to liquid-solid ratio:1 is uniformly mixed, and makes the mixing
Liquid carries out room temperature washing under the action of magnetic stirring apparatus, is then filtered and dry, obtains the roasting slag specimen of room temperature washing.
In the present invention, the liquid-solid ratio of the high titanium slag of washing microwave fluosolids roasting is 8 ~ 10:1, if distilled water and slag specimen
Ratio be less than 8:1, then slag specimen can be made to leach incomplete；If the liquid-solid ratio of distilled water and slag specimen is more than 10:1, then it can be not
Also additional water resource is wasted while easy to operate.Therefore, the ratio of distilled water and slag specimen is 8 ~ 10:1 be it is feasible, preferably
Be 8.5 ~ 9.5:1, more preferably 9.0 ~ 9.2:1.
The separating treatment of the microwave fluosolids roasting slag specimen is centrifugal treating, and it is currently on the market to centrifuge equipment used
The product of sale, such as the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd..
The drying of the microwave fluosolids roasting slag specimen is to use current market sales of product, such as interrogated by Shanghai is rich
The product that industry equipment Co., Ltd is sold with trade name digital display air dry oven.
Advantageous effect]
The beneficial effects of the invention are as follows：Compared with prior art, using the microwave fluosolids roasting of this method treated high titanium
Slag, S contents are in national standard hereinafter, meeting the theory of the cleaning utilization of resources.It can more make material using microwave and streaming mode
Uniform heating, improves the thermal efficiency, accelerates reaction speed, achievees the purpose that energy-saving.Sulphur can be uniform in the present invention
Removing will not make material sintering in container wall using fluosolids roasting, and the loss of material is few, shortens the time of reaction, enables
Consumption reduces, and the content of sulphur is below 0.015% in the slag specimen obtained.
[description of the drawings]
Fig. 1 is the apparatus structure schematic diagram of microwave fluosolids roasting high titanium slag desulfurization in the present invention.
In figure：1- air generators, 2- flow control meters, 3- thermocouples, 4- magnetrons, 5- heat-preservation cottons, 6- feed inlets, 7- dust
Collector, 8- fluidized reaction cavitys, 9- discharge port valves, 10- material collectors.
Specific implementation mode
The present invention is will be better understood when by following embodiments.
Embodiment 1：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take -150 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.06% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating（Such as Fig. 1）, with microwave plus
Heat is used as heat treatment mode, uses air as the carrier of fluosolids roasting, controls the flow velocity of air at 1.0 cubic metres per hour,
Then it is 850 DEG C that temperature is risen under conditions of microwave frequency is 2450MHZ, after the temperature for reaching microwave heating, is kept the temperature,
Soaking time 1h obtains the high titanium slag after microwave fluosolids roasting, then
C, room temperature is washed
It is 8 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.008% by weight.
Embodiment 2：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take -175 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.04% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating（Such as Fig. 1）, with microwave plus
Heat is used as heat treatment mode, uses air as the carrier of fluosolids roasting, controls the flow velocity of air at 1.15 cubic metres per hour,
Then it is 950 DEG C that temperature is risen under conditions of microwave frequency is 2450MHZ, after the temperature for reaching microwave heating, is kept the temperature,
Soaking time 1.5h obtains the high titanium slag after microwave fluosolids roasting, then
C, room temperature is washed
It is 9 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.005% by weight.
Embodiment 3：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take+175 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.03% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating（Such as Fig. 1）, with microwave plus
Heat is used as heat treatment mode, uses air as the carrier of fluosolids roasting, controls the flow velocity of air at 1.24 cubic metres per hour,
Then it is 1050 DEG C that temperature is risen under conditions of microwave frequency is 2450MHZ, after the temperature for reaching microwave heating, is protected
Temperature, soaking time 2h obtain the high titanium slag after microwave fluosolids roasting, then
C, room temperature is washed
It is 10 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and is carried out normal
Warm water is washed, and then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to height
Titanium slag slag specimen is separated by solid-liquid separation, and is then used and is sold with trade name digital display air dry oven by the rich industry equipment company that proves to be true after interrogation in Shanghai
Drying equipment processing is dried to sample under conditions of 105 DEG C, the slag specimen of obtained microwave fluosolids roasting processing, wherein
Amount containing S is 0.004% by weight.
Embodiment 4：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take+200 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.06% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating（Such as Fig. 1）, with microwave plus
Heat is used as heat treatment mode, uses air as the carrier of fluosolids roasting, controls the flow velocity of air at 1.35 cubic metres per hour,
Then it is 850 DEG C that temperature is risen under conditions of microwave frequency is 2450MHZ, after the temperature for reaching microwave heating, is kept the temperature,
Soaking time 1.2h obtains the high titanium slag after microwave fluosolids roasting, then
C, room temperature is washed
It is 8 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.008% by weight.
Embodiment 5：Microwave fluosolids roasting high titanium slag dechlorination process
The implementation steps of the embodiment are as follows：
A, grinding, drying
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take -150 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.04% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating（Such as Fig. 1）, with microwave plus
Heat is used as heat treatment mode, uses air as the carrier of fluosolids roasting, controls the flow velocity of air at 1.4 cubic metres per hour,
Then it is 950 DEG C that temperature is risen under conditions of microwave frequency is 2450MHZ, after the temperature for reaching microwave heating, is kept the temperature,
Soaking time 1.65h obtains the high titanium slag after microwave fluosolids roasting, then
C, room temperature is washed
It is 9 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.005% by weight.
Embodiment 6：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take -175 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.03% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating（Such as Fig. 1）, with microwave plus
Heat is used as heat treatment mode, uses air as the carrier of fluosolids roasting, controls the flow velocity of air at 1.4 cubic metres per hour,
Then it is 1050 DEG C that temperature is risen under conditions of microwave frequency is 2450MHZ, after the temperature for reaching microwave heating, is protected
Temperature, soaking time 1.85h obtain the high titanium slag after microwave fluosolids roasting, then
C, room temperature is washed
It is 8 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.006% by weight.
Comparative example 1：Resistant heating fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
Use the high titanium slag of embodiment 1.
The product sold with trade name QM-3SP4 planetary ball mills using Nanjing Nanda Instrument Co., Ltd. is to high titanium slag
Ball milling is carried out, it is by weight 95% or more to take -150 mesh, is used for microwave drier and water removal is dried, drying is supreme
Titanium slag moisture is in 0.06% wt hereinafter, obtaining the high titanium slag pre-processed.
B, Resistant heating fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of Resistant heating（Such as Fig. 1）, with resistance
Silk heating is used as heat treatment mode, uses air as the carrier of fluosolids roasting, and the flow velocity for controlling air is every small at 1.0 cubic metres
When, it is 850 DEG C then to rise to temperature in the rate that heating rate is 10 DEG C/min, after reaching the temperature needed for heating, is protected
Temperature, soaking time 1h obtain the high titanium slag after Resistant heating fluosolids roasting, then
C, room temperature is washed
It is 8 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.036% by weight.
Comparative example 2：Resistant heating fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
Use the high titanium slag of embodiment 2.
The product sold with trade name QM-3SP4 planetary ball mills using Nanjing Nanda Instrument Co., Ltd. is to high titanium slag
Ball milling is carried out, it is by weight 95% or more to take -175 mesh, is used for microwave drier and water removal is dried, drying is supreme
Titanium slag moisture is in 0.04% wt hereinafter, obtaining the high titanium slag pre-processed.
B, Resistant heating fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of Resistant heating（Such as Fig. 1）, with resistance
Silk heating is used as heat treatment mode, uses air as the carrier of fluosolids roasting, and the flow velocity for controlling air is every at 1.15 cubic metres
Hour, it is 950 DEG C then to rise to temperature in the rate that heating rate is 10 DEG C/min, after reaching the temperature needed for heating, is carried out
Heat preservation, soaking time 1.5h obtain the high titanium slag after Resistant heating fluosolids roasting, then
C, room temperature is washed
It is 9 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.024% by weight.
Comparative example 3：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
Use the high titanium slag of embodiment 3
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take+175 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.03% wt hereinafter, obtaining the high titanium slag pre-processed.
B, Resistant heating fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of Resistant heating（Such as Fig. 1）, with resistance
Silk heating is used as heat treatment mode, uses air as the carrier of fluosolids roasting, and the flow velocity for controlling air is every at 1.24 cubic metres
Hour, it is 1050 DEG C then to rise to temperature in the rate that heating rate is 10 DEG C/min, after reaching the temperature needed for heating, is carried out
Heat preservation, soaking time 2h obtain the high titanium slag after Resistant heating fluosolids roasting, then
C, room temperature is washed
It is 10 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and is carried out normal
Warm water is washed, and then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to height
Titanium slag slag specimen is separated by solid-liquid separation, and is then used and is sold with trade name digital display air dry oven by the rich industry equipment company that proves to be true after interrogation in Shanghai
Drying equipment processing is dried to sample under conditions of 105 DEG C, the slag specimen of obtained microwave fluosolids roasting processing, wherein
Amount containing S is 0.022% by weight.
Comparative example 4：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
Use the high titanium slag of embodiment 4
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take+200 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.06% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of Resistant heating（Such as Fig. 1）, with resistance
Silk heating is used as heat treatment mode, uses air as the carrier of fluosolids roasting, and the flow velocity for controlling air is every at 1.35 cubic metres
Hour, it is 850 DEG C then to rise to temperature in the rate that heating rate is 10 DEG C/min, after the temperature for reaching microwave heating, is carried out
Heat preservation, soaking time 1.2h obtain the high titanium slag after Resistant heating fluosolids roasting, then
C, room temperature is washed
It is 8 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.032% by weight.
Comparative example 5：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
Use the high titanium slag of embodiment 5
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take -150 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.04% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of Resistant heating（Such as Fig. 1）, with resistance
Silk heating is used as heat treatment mode, uses air as the carrier of fluosolids roasting, and the flow velocity for controlling air is every small at 1.4 cubic metres
When, it is 950 DEG C then to rise to temperature in the rate that heating rate is 10 DEG C/min, after the temperature for reaching microwave heating, is protected
Temperature, soaking time 1.65h obtain the high titanium slag after Resistant heating fluosolids roasting, then
C, room temperature is washed
It is 9 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.028% by weight.
Embodiment 6：Microwave fluosolids roasting high titanium slag desulfurization process
The implementation steps of the embodiment are as follows：
A, grinding, drying
High titanium slag is carried out with the product that trade name QM-3SP4 planetary ball mills are sold using Nanjing Nanda Instrument Co., Ltd.
Ball milling, it is by weight 95% or more to take -175 mesh, is used for microwave drier and water removal is dried, dry to high titanium slag
Moisture is in 0.03% wt hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of Resistant heating（Such as Fig. 1）, with resistance
Silk heating is used as heat treatment mode, uses air as the carrier of fluosolids roasting, and the flow velocity for controlling air is every small at 1.4 cubic metres
When, it is 1050 DEG C then to rise to temperature in the rate that heating rate is 10 DEG C/min, after the temperature for reaching microwave heating, is protected
Temperature, soaking time 1.85h obtain the high titanium slag after Resistant heating fluosolids roasting, then
C, room temperature is washed
It is 8 that the microwave that step B is obtained, which fluidizes the slag specimen after heat treatment according to liquid-solid ratio,:1 amount is uniformly mixed, and carries out room temperature
Washing, then uses the product sold with trade name hugging centrifuge by Jiangsu Bo Wei environmental protection equipments Science and Technology Ltd. to high titanium
Slag slag specimen is separated by solid-liquid separation, and is then used and is proved to be true after interrogation what industry equipment company was sold with trade name digital display air dry oven by Shanghai is rich
Processing is dried to sample under conditions of 105 DEG C in drying equipment, the slag specimen of obtained microwave fluosolids roasting processing, wherein containing
S amounts are 0.024% by weight.
The result of implementation of example 1-6 is instructed with the result of implementation comparative analysis of comparative example 1-6, using microwave of the present invention
Fluosolids roasting high titanium slag desulfuration processing method is significantly improved than comparison case effect, is conducive to the removing of sulphur.
Claims (10)
1. a kind of method of microwave fluosolids roasting high titanium slag desulfurization, it is characterised in that the step of this method is as follows：
A, grinding, drying
High titanium slag is ground using planetary ball mill, it is by weight 95% or more to take -150 ~+200 mesh, is used for
Water removal is dried in microwave device, and drying is to high titanium slag moisture in 0.1wt% hereinafter, obtaining the high titanium slag pre-processed.
B, microwave fluosolids roasting
By step A obtain grind, dry after high titanium slag be put into the fluidisation state device of microwave heating, using microwave heating as heat
Processing mode when material roasts by the way of fluidisation movement, then carries out microwave under conditions of 850 ~ 1050 DEG C of temperature and adds
Heat treatment, after reaching microwave heating temperature, is kept the temperature, 1 ~ 2h of soaking time obtains the high titanium slag after microwave fluosolids roasting, connects
It
C, room temperature is washed
High titanium slag sample after the microwave fluosolids roasting that step B is obtained is 8 ~ 10 according to liquid-solid ratio:1 is uniformly mixed, and makes the mixing
Liquid carries out room temperature washing under the action of magnetic stirring apparatus, is then filtered and dry, obtains the roasting slag specimen of room temperature washing.
2. method according to claim 1, it is characterised in that in step A, the high titanium slag is S contents by weight
It is 1.45% or more.
3. method according to claim 1, it is characterised in that in step A, the drying mode is dry for microwave heating
It is dry.
4. method according to claim 1, it is characterised in that in step A, the microwave work(of the microwave drier
Rate is 0.5 ~ 0.8kW, microwave frequency is 915 ~ 945MHZ.
5. method according to claim 1, it is characterised in that in step A, the time of the microwave drying is 3 ~ 5min.
6. method according to claim 1, it is characterised in that in step B, the work(of microwave in the microwave heating equipment
Rate is 0.5 ~ 1.5kW, microwave frequency is 2350 ~ 2550MHZ.
7. method according to claim 1, it is characterised in that in step B, the material carrier of the fluosolids roasting is sky
Gas blasts air using air generator.
8. method according to claim 1, it is characterised in that in step B, the air mass flow of the fluosolids roasting is 1.0
~ 1.5 cubic metres per hour.
9. method according to claim 1, it is characterised in that in step C, time of room temperature washing is 30 ~
60min。
10. method according to claim 1, it is characterised in that in step C, the obtained high titanium of microwave fluosolids roasting
Slag specimen after slag desulfurization, S contents are by weight 0.01% or less.
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Application publication date: 20181113 |