CN109133649A - It is a kind of to propose the system that titanium slag prepares devitrified glass using containing chlorine - Google Patents
It is a kind of to propose the system that titanium slag prepares devitrified glass using containing chlorine Download PDFInfo
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- CN109133649A CN109133649A CN201811088007.8A CN201811088007A CN109133649A CN 109133649 A CN109133649 A CN 109133649A CN 201811088007 A CN201811088007 A CN 201811088007A CN 109133649 A CN109133649 A CN 109133649A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0063—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing waste materials, e.g. slags
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B1/00—Preparing the batches
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B1/00—Preparing the batches
- C03B1/02—Compacting the glass batches, e.g. pelletising
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
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- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Processing Of Solid Wastes (AREA)
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Abstract
The system that titanium slag prepares devitrified glass is proposed using containing chlorine the present invention provides a kind of.The system comprises pretreatment unit, base unit and thermal treatment units, wherein the raw material containing the titanium slag containing chlorine is dried, crushes and cooperates by pretreatment unit, obtains base powder；Base unit can form pressed by powder, obtain green body；Thermal treatment unit includes low-temperature heat area, high-temperature heating area and cooling zone, green body can be heated to 800~1000 DEG C and kept the temperature by low-temperature heat area, obtain the first intermediate product, first intermediate product can be heated to 1100~1200 DEG C and kept the temperature by high-temperature heating area, obtain the second intermediate product, cooling zone can cool down the second intermediate product, to obtain devitrified glass.The beneficial effect comprise that features simple structure, waste residue utilization rate are high, the waste material of generation can be re-used, and heat treatment process can satisfy the technical requirements of green production without noxious gas emission, production process three-waste free discharge.
Description
Technical field
The present invention relates to Solid Waste Treatment and Resources utilization and inorganic non-metallic functional material preparation fields, especially
Ground is related to a kind of utilize and proposes the system that titanium slag prepares devitrified glass containing chlorine.
Background technique
Devitrified glass also known as glass ceramics, micro-crystalline ceramic are to pass through control based on glass and ceramic forming technique
Heat treating regime, obtained crystallite phase and glass phase and a kind of polycrystalline material deposited are high hard because it is with good mechanical performance
Degree, high abrasion and acid-alkali-corrosive-resisting etc. can be used as high-grade construction decoration material and multiple functions material etc..Existing devitrified glass
Production technology specifically includes that whole crystallization method, molten sintering method and sol-gel method, for industrial residue devitrified glass, master
Wanting production technology is first two, and the stage of high-temperature process twice need to be arranged in the equipment of both techniques, all there is energy consumption height, sets
The problems such as standby cumbersome, and its there is also the drawbacks such as the utilization rate of industrial residue is low.
It is high that titanium slag chlorinity is mentioned containing chlorine, it is difficult to is directly used in building material, usually be passed through washing roasting dechlorination or addition
It could be used after antichlor roasting dechlorination, and added value of product is lower after its dechlorination.
Currently, there has been no the devices for only needing a high-temperature process that can prepare devitrified glass, and during the preparation process
It can dechlorinate to titanium slag is mentioned containing chlorine.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to solve above-mentioned one existing in the prior art
Or multiple problems.For example, one of the objects of the present invention is to provide a kind of utilize to propose the system that titanium slag prepares devitrified glass containing chlorine,
The system can recycle chloride simultaneously.
To achieve the goals above, one aspect of the present invention provides a kind of is using mention that titanium slag prepares devitrified glass containing chlorine
System, the system can include: pretreatment unit, base unit and thermal treatment unit, wherein the pretreatment unit can will contain
Chlorine mentions titanium slag and is dried, crushes, and to obtain the powder of base, drying can be before crushing；The thermal treatment unit includes
Green body can be heated to 800~1000 DEG C and carried out by low-temperature heat area, high-temperature heating area and cooling zone, the low-temperature heat area
Heat preservation, obtains the first intermediate product, the first intermediate product can be heated to 1100~1200 DEG C and gone forward side by side by the high-temperature heating area
Row heat preservation, obtains the second intermediate product, the cooling zone can cool down the second intermediate product, to obtain devitrified glass.
Another aspect of the present invention provides a kind of utilize and proposes the system that titanium slag prepares devitrified glass containing chlorine, and the system can wrap
It includes: pretreatment unit, base unit and thermal treatment unit, wherein raw material can be dried, crush by the pretreatment unit
And mixing, to obtain the powder of base；Wherein, raw material includes mentioning titanium slag, ingredient containing chlorine, and drying can be before crushing；It is described
Base unit can form the pressed by powder, obtain the green body of devitrified glass；The thermal treatment unit includes low-temperature heat
Green body can be heated to 800~1000 DEG C and kept the temperature, obtained by area, high-temperature heating area and cooling zone, the low-temperature heat area
To the first intermediate product, the first intermediate product can be heated to 1100~1200 DEG C and kept the temperature by the high-temperature heating area,
The second intermediate product is obtained, the cooling zone can cool down the second intermediate product, to obtain devitrified glass.
One or more exemplary embodiment according to the present invention, the ingredient may include quartz, potassium feldspar, nepheline, boron
At least one of sand, soda ash and cullet.
One or more exemplary embodiment according to the present invention, the thermal treatment unit may include tunnel oven.
One or more exemplary embodiment according to the present invention, described crush includes broken, grinding and classification.
One or more exemplary embodiment according to the present invention, when the object of pretreatment unit processing is to mention containing chlorine
When titanium slag, the pretreatment unit may include drying machine or hothouse and pulverizer；When pair of pretreatment unit processing
When as to mention titanium slag and ingredient containing chlorine, the pretreatment unit may include drying machine or hothouse and pulverizer and batch mixer.
One or more exemplary embodiment according to the present invention, the pulverizer may include crushing mechanism, grinding mechanism；
Pulverizer may also include grading mechanism.
One or more exemplary embodiment according to the present invention, the thermal treatment unit may also include transport mechanism, institute
State low-temperature heat area, high-temperature heating area and cooling zone that the green body can be successively passed to thermal treatment unit by transport mechanism.
One or more exemplary embodiment according to the present invention, the system may also include exhaust unit and condensation is single
Member, wherein the exhaust unit includes air-introduced machine and exhaust pipe, and the inlet end of exhaust pipe is arranged in the low-temperature heat area
Exit or be heated at high temperature area inlet, the air-introduced machine can be by the gas and/or high temperature in the low-temperature heat area
The gas of heating zone introduces in exhaust pipe；Wherein, the gas for being heated at high temperature area includes that flow through cooling zone laggard from external world's introducing
Enter to be heated at high temperature the gas in area；The condensing unit is arranged on the exhaust pipe, and can be in the exhaust pipe
Gas is cooled down, and is attached on the inner wall of the exhaust pipe after condensing the chloride in gas.
One or more exemplary embodiment according to the present invention, the system may also include chloride collector unit, institute
Stating chloride collector unit may also include scrapper conveyor and collection vessel, and the inner wall of the exhaust pipe is arranged in the scrapper conveyor
On, and the chloride on the exhaust pipe inner wall can be struck off, the collection vessel can collect what the scrapper conveyor struck off
Chloride.
One or more exemplary embodiment according to the present invention, the thermal treatment unit, which may also include, to be arranged described low
The outlet of green body preheating zone before warm heating zone, the exhaust pipe is connect with green body preheating zone, in green body preheating zone, institute
The flow direction of exhaust pipe discharge gas and the approach axis of green body are stated on the contrary, the gas of exhaust pipe discharge can be to entrance
The green body of green body preheating zone is heated, and the residual chloride being discharged in gas can be adsorbed on green body.
One or more exemplary embodiment according to the present invention, the inlet in the low-temperature heat area or the green body are pre-
The exit of hot-zone is also provided with wind deflector, enters low-temperature heat to prevent or reduce the gas being discharged from exhaust pipe
Area.
One or more exemplary embodiment according to the present invention, the system may also include UTILIZATION OF VESIDUAL HEAT IN pipeline: described
The gas being discharged from the green body preheating zone can be provided to pretreatment unit and be used for drying by UTILIZATION OF VESIDUAL HEAT IN pipeline.
One or more exemplary embodiment according to the present invention, the system, which may also include, is arranged in cooling zone outlet
Oxygen containing gas can successively be blasted cooling zone and high-temperature heating area by blasting unit, the blasting unit.
One or more exemplary embodiment according to the present invention, it is single in the heat treatment that the system may also include setting
The devitrified glass can be carried out trimming and/or polishing by the post-processing unit after member, the post-processing unit.
One or more exemplary embodiment according to the present invention, the system may also include Loop Seal, the returning charge
The waste material that the post-processing unit trimming and/or polishing generate can be transported to pretreatment unit by mechanism, using waste material as original
One kind of material.
Compared with prior art, the beneficial effect comprise that proposing titanium slag utilization rate containing chlorine is 85~100%, device
Simplicity, waste material can re-use, and heat treatment process meets green production without noxious gas emission, production process three-waste free discharge
Technical requirements.
Detailed description of the invention
By the description carried out with reference to the accompanying drawing, above and other purpose of the invention and feature will become more clear
Chu, in which:
The utilization that Fig. 1 shows an illustrative embodiment of the invention proposes the system that titanium slag prepares devitrified glass containing chlorine and shows
It is intended to；
Fig. 2 shows a schematic diagrames of the thermal treatment unit of an illustrative embodiment of the invention；
Fig. 3 shows another schematic diagram of the thermal treatment unit of an illustrative embodiment of the invention；
The utilization that Fig. 4 shows another exemplary embodiment of the invention proposes the system that titanium slag prepares devitrified glass containing chlorine and shows
It is intended to.
Fig. 5 is the X-ray diffractogram for the devitrified glass sample that example 1 proposes titanium slag preparation containing chlorine；
Fig. 6 is the X-ray diffractogram for the devitrified glass sample that example 2 proposes titanium slag preparation containing chlorine；
Fig. 7 is the scanning electron microscope (SEM) photograph for the devitrified glass sample that example 2 proposes titanium slag preparation containing chlorine；
Fig. 8 is the X-ray diffractogram for the devitrified glass sample that example 5 proposes titanium slag preparation containing chlorine.
Specific embodiment
Hereinafter, utilization of the invention will be described in detail in conjunction with attached drawing and exemplary embodiment and proposes titanium slag preparation containing chlorine
The system of devitrified glass.
Mentioning titanium slag containing chlorine is the one kind obtained after the processing of " high temperature cabonization-low temperature chlorination " titanium extracting technology by titanium-containing blast furnace slag
Low titanium type industrial residue containing chlorine.Inventor's discovery: proposing main component in titanium slag containing chlorine is CaO, SiO2、Al2O3Deng meeting system
The main component of standby devitrified glass, containing simultaneously can be directly as the TiO of the Nucleating Agent ingredient of devitrified glass2、Fe2O3；It is mentioned containing chlorine
Cl in titanium slag-Content be 2~5%, Cl-It mentions in titanium slag containing chlorine mainly with CaCl2Form exists, and makes to mention titanium slag containing chlorine and have
Certain room temperature moisture absorption, can play the role of granulation and bonding.
Therefore, the system that titanium slag prepares devitrified glass is proposed using containing chlorine the invention proposes a kind of.The system need to only lead to
A high-temperature process is crossed, and generated chloride during firing devitrified glass can be collected, makes to mention titanium slag containing chlorine
Without noxious gas emission in devitrified glass preparation process.Preparation system of the invention can be realized solid waste utilization, and it is dirty to reduce environment
It contaminates and realizes energy-saving and three-waste free discharge in production.
The utilization that Fig. 1 shows an illustrative embodiment of the invention proposes the signal that titanium slag prepares devitrified glass system containing chlorine
Figure.
In an exemplary embodiment of the present invention, as shown in Figure 1, the system may include sequentially connected pretreatment
Unit, base unit and thermal treatment unit, wherein
The pretreatment unit can to mention titanium slag as raw material containing chlorine, or to propose titanium slag and ingredient as raw material containing chlorine,
Raw material is pre-processed, the base powder that water content is 3%~6%, granularity is 40~100 μm is obtained.When raw material only contains
When chlorine mentions titanium slag, pretreatment unit may include drier, such as drying machine or hothouse；When raw material includes raw material and ingredient
When, pretreatment unit may include drier, disintegrating mechanism and mixing mechanism.Titanium slag is mentioned containing chlorine in base powder (or raw material)
Mass fraction can be 85% or more, this can satisfy the high usage demand of solid waste.Pretreatment unit can be by the grain of raw material
Degree be broken for 40~100 μm, further, can be 45~96 μm, granularity control be conducive in the range subsequent green body at
Type, while can be avoided the meticulous institute of grinding increased time and energy consumption.The ingredient may include quartz, potassium feldspar, nepheline, boron
One or more of sand, soda ash, cullet.Containing ingredient in raw material is that one kind more preferably selects, and the ingredient can
Fluxing effect is played, and liquid phase is provided under the high temperature conditions, promotes green body dense sintering.
The base unit can form the pressed by powder, obtain the green body of devitrified glass.The base unit can
Including mold and pressure member.Base unit can by the molding process of pressed by powder are as follows: base powder is evenly laid out in mold
In, in 250~720kgf/cm that pressure member provides215~30s of pressure maintaining under pressure obtains the crystallite glass after then demoulding
The green body of glass, further, pressure mechanism is capable of providing 255~714kgf/cm2Pressure, the pressure and pressure maintaining of pressure mechanism
Time control is conducive to blank forming and demoulding within the above range, such as pressure controllable system is in 310 or 680kgf/cm2, the time
It can be controlled in 17 or 28s.Wherein, the environmental condition of base can be room temperature, or the temperature of slightly above room temperature, such as 30~100
℃。
Green body can be heat-treated by the thermal treatment unit, obtain devitrified glass, wherein at the heat of thermal treatment unit
Reason process may include that green body is heated to 800~1000 DEG C (cold stages) and is kept the temperature, and be again heated to 1100~1200 DEG C of (high temperature
Stage) and keep the temperature, then cool down.Wherein, further, the temperature of cold stage can be 800~950 DEG C, such as 810 DEG C, 910
DEG C etc., the temperature of hot stage can be 1130~1185 DEG C, for example, 1140 DEG C, 1170 DEG C etc..
In the present embodiment, as shown in Fig. 2, thermal treatment unit may include can low-temperature heat area, high-temperature heating area and cooling
Area.Green body can be heated to 800~1000 DEG C and kept the temperature by low-temperature heat area, obtain the first intermediate product, the high temperature
First intermediate product can be heated to 1100~1200 DEG C and kept the temperature by heating zone, obtain the second intermediate product, described cold
But area can cool down the second intermediate product, to obtain devitrified glass.The soaking time in low-temperature heat area can for 30~
60min, the soaking time for being heated at high temperature area can be 30~90min.The heating rate of low-temperature heat area heating process can be controlled in 5
~15 DEG C/min, volatile material (such as CO in green body can quickly and be farthest excluded in cold stage in this way2, chlorine
Compound etc.), be conducive to the collection of chloride and the sintering of green body；Further, the heating rate in low-temperature heat area can be 5~10
℃/min.The heating rate of high-temperature heating area's heating process can be controlled in 3~5 DEG C/min, can prevent heating rate mistake in this way
The problems such as deformation of blank sintering caused by fast or sintering unevenness, the i.e. too fast quality for influencing whether sintering of heating rate, Er Qiesheng
Warm speed is too low to will cause energy consumption height, low efficiency.Temperature and time after the heating of low-temperature heat area is controlled at 800~1000 DEG C
With 30~60min, be conducive to the nucleation and crystallization of green body.Temperature and time control after area's heating will be heated at high temperature 1100~
1200 DEG C and 30~90min, blank sintering can be enabled fine and close.
The cooling means of cooling zone may include that slow cooling (such as slow cooling to room temperature or environment temperature) or first slow cooling are fast again
It is cold.Wherein, rapid cooling is specific again for first slow cooling can include: it is kept the temperature under firing temperature after terminating (i.e. hot stage heat preservation terminates), into
Row slow cooling processing, by firing temperature (i.e. the temperature of hot stage) slow cooling to 300~500 DEG C, rate of temperature fall can be 1~4
DEG C/min, which can reduce quartz crystal conversion or be sintered the unstable influence to devitrified glass；Then by 300~
500 DEG C of fast coolings to 200 DEG C hereinafter, such as 30~100 DEG C, this temperature range devitrified glass performance not by temperature shadow
It rings, therefore can be rapidly cooled, such as directly drum cold wind is rapidly cooled to reduce energy consumption, which can be
5~10 DEG C/min.
In the present embodiment, the present invention directly can mention titanium slag containing chlorine using cinder field accumulation, containing chlorine mention titanium slag include according to
The following ingredient of mass fraction meter: 28~33%CaO, 20~25%SiO2, 10~14%Al2O3, 2~7%MgO, 2~10%
TiO2, 2~4%Fe2O3, 2~5%Cl element.Cinder field accumulation proposes the content of water in titanium slag by ambient humidity and season shadow containing chlorine
Sound is larger, for example, the water content in titanium slag is proposed up to 8%~10% containing chlorine in humidity biggish summer, and it is lesser in humidity
Autumn, water content also have 6~8%.
Due to mentioning titanium slag with moisture absorption containing chlorine, the water in titanium slag is mentioned containing chlorine, such as mention in titanium slag containing chlorine and not being pretreated
The water of the dry removal of unit, and in pretreatment unit the secondary moisture absorption water, can be risen in the treatment process of pretreatment unit
To the effect of binder, simultaneously as cementation caused by water is also formed and is made so that little particle generates agglomeration
The effect of grain, granulation process are actually to act on tiny powder granule by addition, and aggregation forms bulky grain.
In the present embodiment, if aqueous height can be unfavorable for crushing (such as being unfavorable for ball milling) in raw material, it is equal to will affect powder
Evenness can also have an impact the proportion of raw material, moreover, if aqueous height in raw material, in subsequent compression moulding, water in raw material
It will receive pressure outflow, the corrosion of mold will be increased in this way.Therefore, it is necessary to which raw material is dried, make the water content in raw material
It is reduced to 6% hereinafter, further, being reduced to 5% or less；I.e. in base powder water content should 6% hereinafter, further,
It is reduced to 5% or less.Therefore, it is necessary to especially mention titanium slag containing chlorine and be dried to raw material.
In the present embodiment, water content should be controlled 3%~6% in base powder, further, can 4%~6%,
Further, it can be controlled in 4%~5%.When base powder moisture content is lower than 3%, in base step (i.e. S02 step)
Pressure under (such as in 250~720kgf/cm2) pressing blank when, be easy to cause green body that can not be compacted, edge lacks
It falls into, if improving pressure, easily causes the expansion of residual air and make blank cracking.
In the present embodiment, when raw material, which only contains chlorine, mentions titanium slag, the pretreatment unit may include that drying machine is (or dry
Room), pulverizer.When including mentioning titanium slag and ingredient containing chlorine in raw material, pretreatment unit may include drying machine (or hothouse), powder
Broken machine and batch mixer.Raw material can be dried in drying machine (or hothouse), and pulverizer can crush raw material to need
Granularity, batch mixer can be by raw material or treated that raw material is uniformly mixed.
The pretreatment unit can also carry out grinding and classification to raw material.The pulverizer may include crushing mechanism, powder
Grinding machine structure and grading mechanism.Alternatively, pretreatment unit may also include setting when the pulverizer only has broken function
Flour mill (or grinder) and size classification apparatus (such as spiral classifier) after pulverizer.Wherein, grinding mechanism (or
Flour mill) it can be by crushing mechanism (or pulverizer) broken raw material grinding, to obtain levigate powder；Grading mechanism
(or size classification apparatus) can be classified according to the granularity of levigate powder, to guarantee to obtain the suitable raw material of granularity.
The pulverizer of pretreatment unit may be provided at after drying machine (or hothouse), and the moisture absorption mentions titanium slag and be unfavorable for containing chlorine
The progress of crushing process, therefore should first crushed after being dried.
Preferably, it is contemplated that mention that water content in titanium slag is higher, the settable pretreatment unit of the mixing mechanism of pretreatment unit
Rearmost, can be reduced or avoided causes each substance that result and the proportion planned finally is cooperated to generate deviation in this way.
In the present embodiment, the raw material or base powder further include according to mass percent meter: mentioning titanium slag 85 containing chlorine
~100%, quartz 0~10%, potassium feldspar 0~7%, nepheline 0~5%, borax 0~3%, soda ash 0~5%, cullet 0~
15%.If the waste material also generated containing subsequent post-processing unit trimming and/or polishing in ingredient, waste material is in raw material or described
Mass fraction in powder is 0~2%.Some can be used as fluxing agent, have plenty of and be considered as two as replenishers, some in ingredient
Person has concurrently, can be considered that fluxing agent is borax and soda ash, can be considered that replenishers are quartz sand, the effect of replenishers be supplement at
Point, it enables the devitrified glass produced more stable, is both replenishers and fluxing agent is potassium feldspar, nepheline and cullet, this
Three can supplement chemical component required for devitrified glass is burnt into, while can provide fluxing effect again.Wherein, devitrified glass at
Dividing replenishers is that can supplement the insufficient chemical component of content when designing microcrystalline glass formula or devitrified glass composition proportion,
Meet microcrystalline glass formula or composition proportion, enables that prepared devitrified glass is more stable, more excellent performance of natural material
Or chemical reagent.
In the present embodiment, described the system also includes the post-processing unit being arranged in after the thermal treatment unit
Post-processing unit the devitrified glass that heat treatment is produced can be carried out trimming and/or polishing, the post-processing unit may include
Bead cutter and/or polishing machine.
The system may also include Loop Seal, and the Loop Seal can transport the waste material that the post-processing unit generates
It send to pretreatment unit, one kind as raw material.Cooling water caused by post-processing unit polishing and/or trimming can be after precipitation
It recycles.
In the present embodiment, the thermal treatment unit may include transmission mechanism, and the transport mechanism being capable of the incoming heat of green body
Processing unit, such as green body is successively sent from the external world to low-temperature heat area, high-temperature heating area and cooling zone；The transport mechanism is also
Devitrified glass after cooling can be sent out from cooling zone.When thermal treatment unit includes green body preheating zone, transport mechanism can
Green body will successively be sent from the external world to green body preheating zone, low-temperature heat area, high-temperature heating area and cooling zone.
Thermal treatment unit may include tunnel oven, and transport mechanism may include kiln car.
In the present embodiment, the system gas generated in the thermal treatment unit course of work can also be collected and
Condensation, may include chloride gas in gas to recycle chloride, chloride may include the chlorate of potassium and/or sodium, such as chlorine
Change sodium, potassium chloride etc..
The system may also include the exhaust unit being arranged on thermal treatment unit, wherein exhaust unit may include air inducing
Machine and exhaust pipe, the air inlet section end of exhaust pipe may be provided at the exit in low-temperature heat area or be heated at high temperature the entrance in area
Place, air-introduced machine can introduce the gas in the low-temperature heat area and/or the gas in high-temperature region in exhaust pipe.Wherein,
Gas in high-temperature heating area may include the gas for entering high-temperature heating area after flowing through cooling zone from extraneous introducing.Wherein, it can weigh
The gas that point is generated for low-temperature heat area, this is because when temperature is more than to be recovered to containing for chlorine by cooling after 1000 DEG C
Amount is just few, only accounts for whole chlorine 1~5%.The outlet end of exhaust pipe may be provided at the arrival end in low-temperature heat area, and air-introduced machine can
It is arranged in exhaust pipe.The gas entered in thermal treatment unit from cooling zone may include oxygen containing gas, such as air or richness
Carrier of oxygen.
The system also includes condensing unit, the condensing unit is arranged on the exhaust pipe, and can be to described
Gas in exhaust pipe is cooled down, and is attached on the inner wall of the exhaust pipe after condensing the chloride in gas.Its
In, the condensation temperature of condensing unit is 400~500 DEG C, and condensation temperature control can enable chloride gas obtain in the range
Sufficiently condensation precipitating, utmostly to obtain the chlorination powder of aggregation.In the heating process of thermal treatment unit, chloride from
It volatilizees in green body, chloride gas is evacuated in exhaust pipe rapidly by air-introduced machine, exhaust pipe used can be resistance to acid and alkali gas
The pipeline of body corrosion, when gas flows to the Near Pipelines with condensing unit, the chloride in gas forms poly- after condensing
Collective is attached on tube wall.
The system may also include chloride collector unit, and the chloride collector unit includes that scrapper conveyor and collection are held
Device, such as collecting bag.The scrapper conveyor may include reciprocation type scrapper conveyor, and scrapper conveyor may be provided on the inner wall of exhaust pipe or set
The inner wall of neighbouring exhaust pipe is set, and the chloride on the exhaust pipe inner wall can be struck off.Exhaust pipe lower end can have
Notch, the notch can be connected with collection vessel, and the size of the notch can determine according to the actual situation.Collection vessel can be with exhaust
Pipeline connection, can collect the chloride that scrapper conveyor strikes off.For example, the chloride in gas forms aggregation attachment after condensing
After tube wall, the reciprocation type scrapper conveyor being arranged on the tube wall of exhaust pipe carries out cycle operation, cleans aggregation to exhaust pipe
In the collecting bag of lower section, it can get the chlorides powder products such as potassium sodium.Scrapper conveyor may be provided at the exhaust pipe of condensing unit effect
On road inner wall, scrapper conveyor includes can be back and forth along the scraper of vessel wall motion, and scraper can strike off the chloride on tube wall.
In the present embodiment, low-temperature heat area and the direction of air-flow in high-temperature heating area are opposite, in the work of air-introduced machine
Under, the gas that high-temperature heating area generates can enter in exhaust pipe together with the gas that low-temperature heat area generates, single in condensation
Under the action of member, chloride gas therein can be condensate in formation potassium, na chloride powder on exhaust pipe inner wall, and chloride is received
Collection unit can recycle chloride.
In the present embodiment, as shown in figure 3, the thermal treatment unit may also include the base before low-temperature heat area is arranged in
Body preheating zone, green body preheating zone can preheat green body.
The gas of exhaust pipe discharge can introduce green body preheating zone, in green body preheating zone, the exhaust pipe by air-introduced machine
Road discharge gas flow direction can with green body trend on the contrary, so on the one hand the waste heat of gas can be used, that is, preheat
On the other hand green body can be such that remaining chloride gas is adsorbed on green body to be heated, and then green body during heating
The chloride of absorption is again introduced into exhaust pipe, is further purified.
As shown in figure 3, the outlet of exhaust pipe may be provided at the near exit of green body preheating zone；Discharge duct outlets it
The outlet of green body preheating zone or the settable wind deflector in low-temperature heat area inlet afterwards, it is low to reduce or prevent the gas of discharge to enter
Warm heating zone.
As shown in Fig. 2, the outlet of exhaust pipe may be provided at the entrance in low-temperature heat area, equally, in exhaust pipe
The settable wind deflector in low-temperature heat area inlet after outlet, to reduce or prevent the gas of discharge to enter low-temperature heat area.
In the present embodiment, institute's system further includes UTILIZATION OF VESIDUAL HEAT IN pipeline: the UTILIZATION OF VESIDUAL HEAT IN pipeline can will be from the base
The gas of body preheating zone discharge is provided to pretreatment unit for drying.For example, pre- heat utilization pipeline can be with drying machine or drying
Room connection, utilizes the gas dry raw material of heat.
In the present embodiment, the system also includes the blasting unit that cooling zone outlet is arranged in, the blasting unit energy
It is enough that oxygen containing gas is successively blasted into cooling zone and high-temperature heating area.
In the present embodiment, also all may be used between low-temperature heat area and high-temperature heating area, between high-temperature heating area and cooling zone
It is provided with buffer area, the influence to avoid feed rate (or time used in each area) to whole preparation process, even if entire work
The stable progress of skill.Certainly, a buffer area also can be set between green body preheating zone and low-temperature heat area.
In another exemplary embodiment of the invention, as shown in figure 4, preparing devitrified glass using titanium slag is mentioned containing chlorine
System, which can will contain chlorine and mention titanium slag or will contain chlorine, proposes titanium slag and ingredient as raw material, obtains base powder by pretreatment unit,
Dry-pressing formed obtained devitrified glass green body is carried out to powder by base unit, in tunnel oven to green body carry out low-temperature heat,
Crystallized glass article is finally made using trimming, polishing in high-temperature heating and cooling.
Specifically, the system for preparing devitrified glass can include:
1) pretreatment system, pretreatment system can will contain chlorine and mention titanium slag to be pre-processed with ingredient, or will be contained chlorine and be mentioned
Titanium slag carries out pre-processing available base powder.Ingredient can be quartz, potassium feldspar, nepheline, borax, soda ash, cullet, polishing
With the complex of one or both of trimming waste material or more.Preprocessing process includes dry, broken, grinding, classification etc..Contain
Chlorine mentions titanium slag and can be separately dried, be crushed with ingredient, grinding, being cooperated and (mixed) after classification；Corresponding, pretreatment unit can
It is used to pre-process including corresponding mechanism, such as drier, crushing mechanism, grinding mechanism, grading mechanism etc..It is mentioned containing chlorine
Each component mass percent in titanium slag and the batch of composition are as follows: mention titanium slag 85~100%, quartzy 0~10%, potassium containing chlorine
Feldspar 0~7%, nepheline 0~5%, borax 0~3%, soda ash 0~5%, cullet 0~15%, polishing and trimming waste material 0~
2%；The granularity of the base powder of acquisition is 45~96 μm.
2) base unit, base unit may include mold and press machine.Base process includes: uniformly to put down base with powder
It spreads in mold, it is dry-pressing formed by control pressure and dwell time progress using press machine, devitrified glass green body is obtained after demoulding.
Such as base powder can be tiled and be put into mold, using press machine, in 255~714kgf/cm2Pressure under, pressure maintaining 15
~30s, dry-pressing formed, demoulding obtains devitrified glass green body.
3) tunnel oven.Tunnel oven can be heat-treated green body, the heat treatment process of tunnel oven can include: by crystallite glass
Glass green body is put into tunnel oven, and heat treatment process and parameter is arranged, specifically: with the heating rate of 5~10 DEG C/min, by room temperature
800~950 DEG C are risen to, 30~60min is kept the temperature；Again with the heating rate of 3~5 DEG C/min, 1130 are warming up to by 800~950 DEG C
~1185 DEG C, keep the temperature 30~90min；Then with slowly cooling to 300~500 DEG C after, then be cooled to fastly by 300~500 DEG C of air blast
30~100 DEG C.
It can be polished by polishing machine and bead cutter after taking out devitrified glass in tunnel oven, trimming, then be obtained
Obtain crystallized glass article.Polishing is re-used with waste recovery obtained by trimming as ingredient, caused by polishing and trimming
Cooling water reuse after precipitation.
As shown in figure 4, in (800~950 DEG C) of the tunnel oven low-temperature heat section settable exhaust pipes in outlet, on exhaust pipe
Settable condensing unit and reciprocation type scrapper conveyor.Tunnel oven is heated at high temperature section (1130~1185 DEG C) and low-temperature heat section air-flow
Direction be it is opposite, high-temperature heating section generate chloride gas can with low temperature presintering generate gas together with enter exhaust pipe
In, potassium na chloride powder is formed after condensing under the action of condensing unit, reciprocation type scrapper conveyor and collecting bag can be to chlorine
Compound is recycled.
The object phase of devitrified glass is prepared according to the system of two examples above embodiment can include: glass phase and crystallite
Phase.Prepared devitrified glass includes three kinds.
The first: the mass fraction of the glass phase is 5~15%, and the mass fraction of the crystallite phase is 85~95%,
The crystallite phase may include mass ratio (42~48): (35~45): akermanite phase, diopside phase and the perovskite of (12~16)
Phase.Wherein, akermanite is mutually principal crystalline phase, and diopside phase, Perovskite Phase are secondary crystal phase.
In crystallite phase, mass fraction shared by akermanite phase can be 42~48%, and mass fraction shared by diopside phase can
It is 35~45%, remaining can be Perovskite Phase.Wherein, akermanite phase and diopside phase content are high, help to improve crystallite glass
The mechanical property of glass.For example, mass fraction shared by akermanite phase can be 46 ± 1%, mass fraction shared by diopside phase can be
39 ± 0.5%, surplus can be Perovskite Phase.Wherein, akermanite phase devitrified glass performance opposite with diopside plays a leading role,
Diopside phase content is in 38~41% ranges, such as 39%, akermanite phase content in 43~45% ranges, such as
44%, at this point, devitrified glass performance is best.Due to mentioning, calcium and magnesium aluminium silicone content is higher in titanium slag, be conducive to akermanite phase and thoroughly
The formation of pyroxene phase；And ceramics can be promoted by mentioning the iron in titanium slag, facilitate akermanite and diopside crystal grain
Growth improves the content of akermanite phase and diopside phase；The titanium in titanium slag is mentioned, can also promote ceramics, promote simultaneously
Into the formation of Perovskite Phase.
Crystallite phase morphology is mainly plate, short cylinder and graininess in devitrified glass；Wherein, akermanite is mutually plate,
Diopside is short cylinder, and Perovskite Phase is graininess.The length of plate crystallite phase can be 1.5~3.4 μm, and width can be 1~1.7
μm, such as it is 1.8 μm long, 1.2 μm wide, it is for another example 3.2 μm long, 1.6 μm wide；The length of short cylinder crystallite phase can be 1.4~2.5 μm,
Width can be 1.2~1.7 μm, for example, it is 2.0 ± 0.4 μm long, it is 1.5 ± 0.1 μm wide；The partial size of granular microcrystalline phase can for 0.5~
1.2 μm, for example, 0.8 ± 0.2 μm.Above crystallite phase morphology, that is, crystallite phase size is smaller, and respectively less than 5 μm, the lesser crystallite of size
It mutually interconnects, generated gap is smaller, is conducive to even in liquid phase filling, reduces void count, promote the property of devitrified glass
Energy.
May also include in the devitrified glass has stomata, wherein the volume accounting of stomata is 5% hereinafter, such as 1~5%.
Stomata may include that glass phase is not filled up completely the alternate gap of crystallite in devitrified glass, i.e., the described stomata include the glass phase with
The gap between gap and each crystallite phase between the crystallite phase.The aperture of the stomata can be 1~3 μm, such as 2 ±
0.4μm.In the production process of devitrified glass or ceramics, stomata can not exclude completely, the gas of devitrified glass provided by the invention
Hole accounting is lower, aperture is smaller, this can guarantee the high-performance of devitrified glass.
Second, the crystallite phase of devitrified glass may include principal crystalline phase: diopside phase, secondary crystal phase: akermanite phase, perovskite
Phase and quartzy phase；Wherein, mass fraction shared by diopside phase is 62~67%, mass fraction shared by akermanite phase is 14~
20%, mass fraction shared by Perovskite Phase is 3~5%, and surplus can be quartzy phase；For example, mass fraction shared by diopside phase is
64 ± 1%, mass fraction shared by akermanite phase can be 17 ± 1%, and mass fraction shared by Perovskite Phase can be 4 ± 0.5%, remaining
Amount is quartzy phase.
The third, the crystallite phase of devitrified glass may include principal crystalline phase: diopside phase, secondary crystal phase: aspidelite phase.Wherein, saturating brightness
Mass fraction shared by stone phase can be 95~97%, and surplus is aspidelite phase；Such as mass fraction shared by diopside phase can for 96 ±
0.5%, mass fraction shared by aspidelite phase can be 3.5 ± 0.1%.
The property of the above prepared devitrified glass is as follows: volume density is 2.60~2.8g/cm2, water absorption rate 0.05
~0.3%, compression strength is 102~140MPa, and acid resistance is 96% or more, and alkali resistance is 97% or more.For example, devitrified glass
Density can be 2.62~2.74g/cm3, water absorption rate can be 0.09~0.28%, and compression strength can be 105~131MPa, acidproof
Property can be 96~98.5%, alkali resistance can be 97~99.2%.
Exemplary embodiments mentioned above for a better understanding of the present invention carries out into one it below with reference to specific example
Walk explanation.
Example 1
The process for preparing devitrified glass using system of the invention is as follows:
1) taking Sichuan somewhere through " high temperature cabonization-low temperature chlorination " titanium extracting technology, treated that mention titanium slag containing chlorine be main former
Material, ingredient are selected as quartz, potassium feldspar and borax, will propose titanium slag and ingredient in 105 DEG C of drying indoor seasoning 8h, then containing chlorine
The raw material after drying is crushed respectively by crusher, flour mill and size classification apparatus, grinding, classification, by each component
Weighing cooperation is carried out to mention titanium slag 85%, quartz 5%, potassium feldspar 7%, borax 3% containing chlorine by mass percentage, taking granularity is 96
μm powder as base powder.
2) by the evenly laid out merging mold of base powder, granulating agent and binder are not added, under press machine, with pressure
Power is 714kgf/cm2, the pressing conditions progress of dwell time 20s is dry-pressing formed, then demoulds, obtains devitrified glass green body.
3) devitrified glass green body is put into tunnel oven, sets heat treatment process and parameter, specifically: with 7 DEG C/min's
Heating rate rises to 800 DEG C by room temperature, keeps the temperature 60min；Then with the heating rate of 5 DEG C/min, 1130 DEG C are risen to by 800 DEG C,
Keep the temperature 60min；Then 400 DEG C of Slow cooling, rate of temperature fall are 2 DEG C/min；Then it is cooled to 50 DEG C fastly by 400 DEG C, rate of temperature fall
For 10 DEG C/min；It takes out and polishes, obtain crystallized glass article after trimming.Wherein, conduct is collected to polishing trimming waste material
Ingredient uses, polishing and the cooling water reuse after precipitation during trimming.In room temperature to unlatching tunnel oven during 800 DEG C
Gas collection and condensing unit, condensation temperature are set as 400 DEG C.In temperature-rise period, the chloride gas that green body generates is evacuated to row
In feed channel, it is attached on tube wall through condensation, while opening the reciprocation type scrapper conveyor on tube wall and carrying out circulation cleaning, by aggregation
It collects into the collecting bag below tube wall, can get potassium na chloride powder.
As shown in figure 5, its principal crystalline phase of obtained crystallized glass article is diopside phase, secondary crystal phase is akermanite
Phase, Perovskite Phase and quartzy phase.The crystallized glass article is tested for the property, volume density is 2.64g/cm after tested3, water suction
Rate is 0.20%, compression strength 108MPa, acid resistance 96.7%, alkali resistance 97.2%.
Example 2
The process for preparing devitrified glass using system of the invention is as follows:
1) to mention titanium slag containing chlorine in example 1 as whole raw materials, titanium slag is mentioned in drying 12h in 110 DEG C of hothouses, so containing chlorine
The raw material after drying is crushed by crusher, flour mill and size classification apparatus afterwards, grinding, classification respectively, takes granularity
It is 96 μm of powders as base powder.
2) tiling of base powder is placed in mold, using press machine, in pressure be 510kgf/cm2, pressure maintaining 20s's
It carries out dry-pressing formed under the conditions of base, then demoulds, obtain devitrified glass green body.It is not added during devitrified glass blank forming
Granulating agent and binder.
3) devitrified glass green body is put into tunnel oven, sets heat treatment process and parameter, specifically: with 5 DEG C/min's
Heating rate rises to 890 DEG C by room temperature, keeps the temperature 30min；Then with the heating rate of 3 DEG C/min, 1185 DEG C are risen to by 890 DEG C,
Keep the temperature 60min；Then 500 DEG C are slowly cooled to, rate of temperature fall is 3 DEG C/min, is then quickly cooled to 30 DEG C by 500 DEG C, drop
Warm 5 DEG C/min of rate；It takes out and polishes after cooling, obtain crystallized glass article after trimming.Room temperature is to during 850 DEG C
The gas collection and condensing unit of tunnel oven are opened, condensation temperature is set in 450 DEG C, in temperature-rise period, is lacked by what green body generated
Amount chloride gas is fallen on the tube wall of exhaust pipe through condensation, while being opened the reciprocation type scrapper conveyor on tube wall and being carried out circulation cleaning
It sweeps, aggregation is collected into collecting bag below tube wall, obtain chlorination powder.
Prepared crystallized glass article carries out X-ray diffraction test and analysis, it will be appreciated from fig. 6 that its principal crystalline phase is that magnesium is yellow
Feldspar phase, secondary crystal phase are diopside and Perovskite Phase.Electronic Speculum (SEM) test and analysis are scanned to the crystallized glass article,
Test results are shown in figure 7, it can be seen from figure 7 that in the devitrified glass crystallite phase morphology be mainly plate, short cylinder and
Granular, devitrified glass is made of crystallite phase, glass phase and Minute pores, and glass phase is mutually twisted with crystallite phase, and structure more causes
It is close.The crystallized glass article is tested for the property, the volume density of crystallized glass article is 2.70g/cm after tested3, water absorption rate
It is 0.11%, compression strength 120MPa, acid resistance 97.8%, alkali resistance 98.5%.
Example 3
The process for preparing devitrified glass using system of the invention is as follows:
1) titanium slag is mentioned containing chlorine and quartz, nepheline are put into 108 DEG C of drying indoor seasoning 8h, by mass percentage by each component
Weighing cooperation is carried out for blast furnace slag containing chlorine 85%, quartz 10%, nepheline 5%, then passes through crusher, flour mill and grading
Equipment is crushed raw material respectively, grinding, classification, and the granularity for obtaining base powder is 75 μm.
2) it is placed in base powder is evenly laid out in mold, using press machine, in 357kgf/cm2Under pressure, pressure maintaining
15s progress is dry-pressing formed, then demoulds, and obtains devitrified glass green body.Granulating agent is not added during devitrified glass blank forming
With binder.
3) devitrified glass green body is put into tunnel oven, sets heat treatment process and parameter, specifically: with 5 DEG C/min's
Heating rate rises to 950 DEG C by room temperature, keeps the temperature 30min；Then with the heating rate of 3 DEG C/min, 1160 DEG C are risen to by 950 DEG C,
Keep the temperature 60min；Then 300 DEG C are slowly cooled to, 4 DEG C/min of rate of temperature fall；Then 100 DEG C are quickly cooled to by 300 DEG C, cooling
Rate is 6 DEG C/min；After cooling take out polished by polishing machine and bead cutter, trimming, acquisition crystallized glass article.
Room temperature opens the gas collection and condensing unit of tunnel oven during rising to 950 DEG C, condensation temperature is set as 500 DEG C, by base
The chloride gas that body generates forms aggregation after condensing on the tube wall of exhaust pipe, while opening round-trip on tube wall
Formula scrapper conveyor carries out circulation cleaning, and aggregation is collected into collecting bag below tube wall, obtains potassium na chloride powder.
To prepared crystallized glass article with reference to being tested for the property, after tested, the volume density of crystallized glass article is
2.68g/cm3, water absorption rate 0.15%, compression strength 114MPa, acid resistance 98%, alkali resistance 97.5%.
Example 4
The process for preparing devitrified glass using system of the invention is as follows:
1) it will contain that chlorine mentions titanium slag and quartz, soda ash, polishing trimming waste material are put into after drying 10h in 110 DEG C of hothouses, pass through
Crusher, flour mill and size classification apparatus be crushed the raw material after drying respectively, grinding and classification, then presses each group sub-prime
Amount percentage is to mention titanium slag 90%, quartz 3%, soda ash 5%, polishing trimming waste material 2% containing chlorine to carry out weighing cooperation, takes the granularity to be
75 μm of powder is as base powder.
2) base is laid in mold with powder, is 357kgf/cm in pressure using press machine2, the item of pressure maintaining 30s
It is dry-pressing formed under part, it then demoulds, obtains devitrified glass green body.Granulating agent is not added during devitrified glass blank forming and is glued
Tie agent.
3) devitrified glass green body is put into tunnel oven, sets heat treatment process and parameter, specifically: with 5 DEG C/min's
Heating rate rises to 850 DEG C by room temperature, keeps the temperature 60min；Then with the heating rate of 3 DEG C/min, 1180 DEG C are risen to by 850 DEG C,
Keep the temperature 90min；Then with the heating rate of 3 DEG C/min, 1180 DEG C is risen to by 850 DEG C, 90min is kept the temperature, then slowly cools to
450 DEG C, rate of temperature fall is 1 DEG C/min；Then 40 DEG C are quickly cooled to by 450 DEG C, rate of temperature fall is 8 DEG C/min；Cooling terminates
After take out and polish, obtain crystallized glass article after trimming.Room temperature to open during 850 DEG C the gas collection of tunnel oven with
Condensing unit, condensation temperature are set as 450 DEG C.The chloride gas generated by green body falls in the tube wall of exhaust pipe through condensing
On, while opening the reciprocation type scrapper conveyor on tube wall and carrying out circulation cleaning, aggregation is collected into collecting bag below tube wall, is obtained
Obtain potassium na chloride powder.
To obtained crystallized glass article with reference to being tested for the property, the volume density of crystallized glass article is after tested
2.62g/cm3, water absorption rate 0.28%, compression strength 105MPa, acid resistance 96%, alkali resistance 99.2%.
Example 5
The process for preparing devitrified glass using system of the invention is as follows:
1) chlorine will be contained to mention titanium slag and after cullet is put into 105 DEG C of dry indoor seasoning 8h, pass through crusher, flour mill and grain
Degree classifying equipoment is crushed the raw material after drying respectively, grinding and classification, then by mass percentage to mention titanium slag containing chlorine
85%, cullet 15% carries out weighing cooperation, takes the powder that granularity is 45 μm as base powder.
2) 45 μm of base powder tilings are taken to put into mold, using press machine, in 255kgf/cm2Pressure under, pressure maintaining
30s progress is dry-pressing formed, then demoulds, and obtains devitrified glass green body.Granulating agent is not added during devitrified glass blank forming
With binder.
3) devitrified glass green body is put into tunnel oven, sets heat treatment process and parameter, specifically: with 10 DEG C/min's
Heating rate rises to 850 DEG C by room temperature, keeps the temperature 60min；Then with the heating rate of 3 DEG C/min, 1130 DEG C are risen to by 850 DEG C,
Keep the temperature 90min；Then 350 DEG C are slowly cooled to, rate of temperature fall is 4 DEG C/min；Then 80 DEG C are quickly cooled to by 350 DEG C, drop
Warm 10 DEG C/min of rate；It takes out and polishes after cooling, obtain crystallized glass article after trimming.It is opened when room temperature is to 850 DEG C
The gas collection and condensing unit of tunnel oven, condensation temperature are set as 450 DEG C.To in temperature-rise period green body generate chloride into
Row is collected, and collection process is same as above, and then obtains potassium na chloride powder.
Its principal crystalline phase of obtained crystallized glass article is diopside phase, and secondary crystal phase is aspidelite phase (see Fig. 8).To the crystallite
Glass is tested for the property, and the volume density of crystallized glass article is 2.74g/cm after tested3, water absorption rate 0.09%, pressure resistance
Degree is 131MPa, acid resistance 98.5%, alkali resistance 97%.
In conclusion using diopside or akermanite prepared by the present invention mutually for the devitrified glass of principal crystalline phase and its preparation
System has the progress of conspicuousness compared with the existing technology, and its advantages are as follows:
1) only once high-temperature heat treatment process, process more simplify in preparation system of the invention, avoid melting and burn
The complex processes such as connection and high-temperature fusion in whole crystallization method sintering process and water quenching.
2) used in preparation system of the invention to be mentioned in titanium slag raw material containing chlorine relative to molten sintering method and whole crystallization method
TiO2With Fe2O3, may act as the effect of complex phase Nucleating Agent, addition Nucleating Agent be not required in preparation process；Titanium slag utilization rate is proposed containing chlorine
It is 85~100%.
3) present invention can be carried out directly using the characteristic for proposing the titanium slag room temperature moisture absorption containing chlorine without adding granulating agent and binder
It is dry-pressing formed, be omitted in preparation system bonding, be granulated and etc. with corresponding equipment.
4) preparation system of the invention during the work time, can dechlorinate to titanium slag is mentioned containing chlorine, no pernicious gas row
It puts, meanwhile, preparation system can re-use the waste material that polishing and trimming generate, and cooling water that preparation process generates etc. is through precipitating
After can be conducive to environmental protection with reuse, production process three-waste free discharge, meet the requirement of green manufacture technology.
5) it is higher than lithotome with the microcrystallite body properties of preparation system of the present invention preparation, can be used as top-grade building
Ornament materials, technique engraving and ceramic material etc..
6) preparation system features simple structure of the invention, high production efficiency, low energy consumption, it is environmentally protective, be more advantageous to industry and push away
Extensively, it is especially suitable for applying the central and west regions electric power is sufficient, ecological environment is more fragile.
Although those skilled in the art should be clear above by combining exemplary embodiment to describe the present invention
Chu can carry out exemplary embodiment of the present invention each without departing from the spirit and scope defined by the claims
Kind modifications and changes.
Claims (10)
1. a kind of propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that the system comprises: pretreatment is single
Member, base unit and thermal treatment unit, wherein
The pretreatment unit, which can will contain chlorine and mention titanium slag, to be dried, crushes, to obtain the powder of base；
The base unit can form the pressed by powder, obtain the green body of devitrified glass；
The thermal treatment unit include low-temperature heat area, high-temperature heating area and cooling zone, the low-temperature heat area can be by green body
It is heated to 800~1000 DEG C and is kept the temperature, obtain the first intermediate product, the high-temperature heating area can be by the first intermediate product
Be heated to 1100~1200 DEG C and kept the temperature, obtain the second intermediate product, the cooling zone can by the second intermediate product into
Row cooling, to obtain devitrified glass.
2. according to claim 1 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that the pre- place
Managing unit includes drying machine or hothouse and pulverizer.
3. a kind of propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that the system comprises: pretreatment is single
Member, base unit and thermal treatment unit, wherein
Raw material can be dried, crushes and mix by the pretreatment unit, to obtain the powder of base；Wherein, raw material
Including mentioning titanium slag, ingredient containing chlorine；
The base unit can form the pressed by powder, obtain the green body of devitrified glass；
The thermal treatment unit include low-temperature heat area, high-temperature heating area and cooling zone, the low-temperature heat area can be by green body
It is heated to 800~1000 DEG C and is kept the temperature, obtain the first intermediate product, the high-temperature heating area can be by the first intermediate product
Be heated to 1100~1200 DEG C and kept the temperature, obtain the second intermediate product, the cooling zone can by the second intermediate product into
Row cooling, to obtain devitrified glass.
4. according to claim 3 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that the pre- place
Managing unit includes drying machine or hothouse and pulverizer and batch mixer.
5. according to claim 1 or 3 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that described
Thermal treatment unit further includes transport mechanism, and the low temperature that the green body can be successively passed to thermal treatment unit by the transport mechanism adds
Hot-zone, high-temperature heating area and cooling zone.
6. according to claim 1 or 3 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that described
System further includes exhaust unit and condensing unit, wherein
The exhaust unit includes air-introduced machine and exhaust pipe, and going out for the low-temperature heat area is arranged in the inlet end of exhaust pipe
At mouthful or inlet in high-temperature heating area, the air-introduced machine can be by the gas and/or high-temperature heating in the low-temperature heat area
The gas in area introduces in exhaust pipe；Wherein, the gas for being heated at high temperature area includes entering height after flowing through cooling zone from external world's introducing
The gas of warm heating zone；
The condensing unit is arranged on the exhaust pipe, and can cool down to the gas in the exhaust pipe, makes
It is attached on the inner wall of the exhaust pipe after chloride condensation in gas.
7. according to claim 6 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that the system
It further include chloride collector unit, the chloride collector unit includes scrapper conveyor and collection vessel, and the scrapper conveyor setting exists
On the inner wall of the exhaust pipe, and the chloride on the exhaust pipe inner wall can be struck off, the collection vessel can be received
Collect the chloride that the scrapper conveyor strikes off.
8. according to claim 6 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that at the heat
Reason unit further includes the green body preheating zone before the low-temperature heat area is arranged in, and the outlet of the exhaust pipe and green body preheat
Area's connection, in green body preheating zone, the flow direction of the exhaust pipe discharge gas and the trend of green body are on the contrary, the exhaust pipe
The gas of discharge can heat the green body for entering green body preheating zone, and residual chloride can be adsorbed in discharge gas
On green body.
9. according to claim 8 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that the low temperature
The exit of the inlet of heating zone or the green body preheating zone is additionally provided with wind deflector, described from exhaust pipe to prevent or reduce
The gas of road discharge enters low-temperature heat area.
10. according to claim 8 propose the system that titanium slag prepares devitrified glass using containing chlorine, which is characterized in that the system
System further includes UTILIZATION OF VESIDUAL HEAT IN pipeline: the gas being discharged from the green body preheating zone can be provided to pre- by the UTILIZATION OF VESIDUAL HEAT IN pipeline
Processing unit is used for drying.
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