CN111961771A - Titanium-containing blast furnace slag chlorination device - Google Patents
Titanium-containing blast furnace slag chlorination device Download PDFInfo
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- CN111961771A CN111961771A CN202010862320.3A CN202010862320A CN111961771A CN 111961771 A CN111961771 A CN 111961771A CN 202010862320 A CN202010862320 A CN 202010862320A CN 111961771 A CN111961771 A CN 111961771A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
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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
- C22B1/08—Chloridising roasting
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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
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention relates to the field of titanium-containing blast furnace equipment, in particular to a titanium-containing blast furnace slag chlorination device for realizing rapid, efficient and economic carbide slag boiling chlorination treatment by improving TiC chlorination rate on the basis of ensuring the kinetic conditions of carbide slag chlorination reaction and chlorination efficiency. The invention is especially suitable for the chlorination process of the titanium-containing blast furnace slag.
Description
Technical Field
The invention relates to the field of titanium-containing blast furnace equipment, in particular to a titanium-containing blast furnace slag chlorination device.
Background
The vanadium titano-magnetite has abundant reserves in the world, the reserve of China is listed as the first place, the reserve of China is up to billions of tons, and the total reserve of titanium resources is at the top of China. The vanadium titano-magnetite is a kind of multi-element paragenic ore, and the ore contains 30% -34% of iron (existing in the form of iron oxide in the ore), and is mainly used as raw material for extracting iron, vanadium and titanium. In the existing titanium-containing blast furnace production, the chlorination operation is basically stable, the yield is achieved, but the Ti chlorination efficiency is low, the Ti chlorination efficiency is difficult to stably reach the design level, the Ti utilization efficiency is seriously influenced, and the whole-process economy is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a titanium-containing blast furnace slag chlorination device which improves TiC chlorination rate on the basis of ensuring the kinetic conditions and chlorination efficiency of the carbide slag chlorination reaction, thereby realizing rapid, efficient and economic carbide slag boiling chlorination treatment.
The technical scheme adopted by the invention for solving the technical problems is as follows: the titanium-containing blast furnace slag chlorination device comprises a feeding system, a boiling chlorination furnace, a cyclone dust collecting system and a titanium tetrachloride collecting system which are sequentially communicated, wherein the boiling chlorination furnace is sequentially divided into a first chlorination unit, a second chlorination unit and a third chlorination unit which are communicated with each other, the first chlorination unit is communicated with an inlet of the boiling chlorination furnace, and the bottoms of the first chlorination unit, the second chlorination unit and the third chlorination unit are respectively and correspondingly provided with a first purging inlet, a second purging inlet and a third purging inlet.
Further, the first purge inlet is respectively communicated with the first nitrogen inlet and the first chlorine inlet.
Further, the first nitrogen inlet is connected with the inlet of the boiling chlorination furnace through an inlet purging pipeline.
Further, the second purge inlet is in communication with the second nitrogen inlet and the second chlorine inlet.
Further, the third purge inlet is in communication with the third nitrogen inlet and the third chlorine inlet.
Furthermore, a dust and slag collecting outlet is formed in the bottom of the cyclone dust collecting system.
Further, the titanium tetrachloride collecting system is communicated with the boiling chlorination furnace through a crude titanium tetrachloride return spraying pipeline.
Further, the titanium tetrachloride collecting system is provided with a tail gas treatment pipeline.
Further, the fluidized bed chlorination furnace is provided with a chlorination tailings discharging pipeline.
Furthermore, the cyclone dust collecting system is of a double-cyclone dust collecting structure.
The invention has the beneficial effects that: according to the invention, according to the boiling chlorination characteristics of the carbide slag, the first chlorination unit, the second chlorination unit and the third chlorination unit are adopted to construct the multiple chlorination unit reactors, the reaction speed and the gas speed of the carbide slag are effectively matched by controlling the chlorination gas speed of each unit, and meanwhile, the carbide slag sequentially passes through each chlorination unit in an overflow mode, so that the retention time of the carbide slag in the boiling chlorination furnace is prolonged, and the TiC chlorination rate in the carbide slag is improved. The invention is especially suitable for the chlorination process of the titanium-containing blast furnace slag.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Labeled as: the device comprises a charging system 1, a charging system outlet 11, a boiling chlorination furnace 2, a first chlorination unit 21, a first purge inlet 211, a first nitrogen inlet 212, a first chlorine inlet 213, an inlet purge pipeline 214, a second chlorination unit 22, a second purge inlet 221, a second nitrogen inlet 222, a second chlorine inlet 223, a third chlorination unit 23, a third purge inlet 231, a third nitrogen inlet 232, a third chlorine inlet 233, a chlorination tailings discharge pipeline 24, a boiling chlorination furnace inlet 25, a boiling chlorination furnace discharge pipe 26, a cyclone dust collection system 3, a dust collection slag outlet 31, a cyclone dust collection system discharge pipe 32, a titanium tetrachloride collection system 4, a crude titanium tetrachloride return furnace spray pipeline 41, a titanium tetrachloride collection system discharge pipe 42, a tail gas treatment pipeline 43 and a titanium tetrachloride refining pipeline 5.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The titanium-containing blast furnace slag chlorination device shown in fig. 1 comprises a feeding system 1, a boiling chlorination furnace 2, a cyclone dust collecting system 3 and a titanium tetrachloride collecting system 4 which are sequentially communicated, wherein the boiling chlorination furnace 2 is internally divided into a first chlorination unit 21, a second chlorination unit 22 and a third chlorination unit 23 which are communicated with each other in sequence, the first chlorination unit 21 is communicated with an inlet 25 of the boiling chlorination furnace 2, and the bottoms of the first chlorination unit 21, the second chlorination unit 22 and the third chlorination unit 23 are respectively and correspondingly provided with a first purging inlet 211, a second purging inlet 221 and a third purging inlet 231.
In order to realize that nitrogen or chlorine can be blown in at each purge inlet, such a scheme is preferred: the first purge inlet 211 is respectively communicated with a first nitrogen inlet 212 and a first chlorine inlet 213; preferably, the second purge inlet 221 is in communication with the second nitrogen inlet 222 and the second chlorine inlet 223; the third purge inlet 231 communicates with the third nitrogen inlet 232 and the third chlorine inlet 233. In order to introduce a proper amount of purge nitrogen gas simultaneously in the feeding process, the boiling chlorination furnace inlet 25 is preferably opened at the lower middle part of the boiling chlorination furnace 2, and the carbonized slag directly enters the lower concentrated phase zone of the chlorination furnace, i.e. the first nitrogen gas inlet 212 is preferably connected with the boiling chlorination furnace inlet 25 through the inlet purge pipeline 214. Under the cooperation of the flared diffusion openings at the lower ends of the charging gas and the charging tube, the carbide slag is sprayed along the radial direction and is mixed with chlorine and the carbide slag in the furnace rapidly, so that the collision and shearing friction effects between the chlorine and the carbide slag and between new and old carbide slag are stronger, the reaction product on the surface of the carbide slag is easy to fall off, the boiling chlorination reaction process can be greatly improved, and the smooth feeding of the system is ensured.
In order to discharge the dust collecting slag in the cyclone dust collecting system 3 in time, a dust collecting slag outlet 31 is preferably arranged at the bottom of the cyclone dust collecting system 3. Generally, the cyclone dust collecting system 3 is a double cyclone dust collecting structure. The titanium tetrachloride collecting system 4 is provided with a tail gas treatment pipeline 43, so that the tail gas is conveniently treated in a centralized manner. In order to realize the spraying of the boiling chlorination furnace 2 by returning the crude titanium tetrachloride, the scheme is preferably as follows: the titanium tetrachloride collecting system 4 is communicated with the boiling chlorination furnace 2 through a crude titanium tetrachloride return spray pipeline 41.
Specifically, at present, blast furnace slag is pretreated at high temperature in a carbonization electric furnace to generate liquid carbide slag, the liquid carbide slag is cooled and crushed, the particle size distribution range of the carbide slag is wide, if chlorination is selected to be operated by adopting one chlorination parameter, and when the chlorination is carried out in the same boiling chlorination reactor, the gas is carried out of the reactor for the end reaction of the carbide slag with the slightly fine particles; and the TiC contained in the center of the coarse-particle carbide slag is not reacted in time and is discharged out of the reactor along with tailings, so that the overall chlorination rate of the carbide slag is low. The chlorination efficiency of carbide slag has been promoted to the second grade chlorination mode that often adopts at present, but blow-by between the reactor, solid phase material leak the scheduling problem, and continuous stability is relatively poor, and the control degree of difficulty is big, has brought certain degree of difficulty to the operation, has also influenced the chlorination rate of Ti in the carbide slag simultaneously. The invention provides a novel boiling chlorination reactor and a chlorination process of carbide slag matched with the same, wherein a chlorination reaction is divided into a plurality of units by adopting a separation chamber in the same chlorination reactor, different chlorination parameters are adopted for different units, the reaction amount of the carbide slag in the chlorination reaction unit is controlled, the heat discharged by chlorination of the carbide slag is discharged by adopting a corresponding process, the thermal balance of a chlorination furnace system is kept, the temperature is stable, the chlorination of CaO and MgO in the carbide slag is inhibited, the CaO and MgO is chlorinated to avoid the problem of a chlorination system, meanwhile, the carbide slag sequentially passes through a plurality of chlorination units in the reactor, under the action of a fluidizing medium, the passing speed of fine-fraction carbide slag is higher, the passing speed of coarse-fraction carbide slag is lower, the average residence time of the coarse-fraction carbide slag in the reactor is ensured, so that the chlorination rate of Ti in the carbide slag is improved, and the temperature of the system is stable. The method adopts a specially-made boiling chlorination reaction device, divides the chlorination reaction of the carbide slag into three stages, adjusts different operating parameters according to different stages, effectively controls the reaction speed, keeps the heat balance of a reaction system, prolongs the retention time of coarse particles in a reactor, effectively improves the chlorination effect of titanium elements in the carbide slag, and improves the economy of the whole process. The method is simple, the reactor is low in comprehensive manufacturing cost, simple and convenient to maintain, and high in popularization and application feasibility.
The boiling chlorination furnace 2 adopts a plurality of chlorination reaction units, each unit can be provided with an independent gas inlet pipeline and a control system, and the gas proportion and the fluidization gas speed can be adjusted according to the reaction requirement. The carbide slag enters each fluidizing unit step by step in an overflowing mode. The reactor is provided with a common transition section and an expansion section, and the gas velocity of the expansion section is far lower than that of the reaction section, so that fine-grained titanium carbide particles carried out by the gas from the reaction section can be effectively settled in the expansion section, the system yield is ensured, and the content of solid particles in the crude titanium tetrachloride can be effectively reduced. Preferably, each boiling chlorination reaction unit comprises a gas premixing chamber, a gas distributor, a chlorination reaction section and a feeding device. Each chlorination unit gas supply device is provided with an inert gas (preferably nitrogen) pipeline and a regulating and controlling system; chlorine pipeline and regulation, control system. Single and multiple gas supplies can be achieved. As for the charging system 1, it is preferable that the first chlorination unit 21, the second chlorination unit 22 and the third chlorination unit 23 are provided with a set of carbide slag feeding pipe and feeding port, and each chlorination unit is provided with a set of slag outlet and slag outlet pipeline.
When the actual carbide slag is subjected to boiling chlorination, the reaction is severe, the heat release is large, if the heat cannot be brought out in time, the temperature of a reaction system is easily and quickly increased, CaO and MgO chlorination in the carbide slag is caused, the boiling chlorination state of the carbide slag in the furnace is influenced, and the sintering and the flow loss of materials in the boiling furnace can be caused in serious conditions. Preferably, a gas premixing chamber, a reaction section and a settling section are arranged in each chlorination unit of the boiling chlorination furnace 2, so that the temperature and pressure distribution conditions in the boiling chlorine can be timely and accurately reflected, the fluidization condition and the reaction condition in the furnace can be judged, and the process parameters can be timely adjusted. Because each unit of the invention is provided with an independent gas supply device, the types and the gas amount of the gas can be adjusted according to the reaction condition in the chlorination furnace. The different chlorine contents, different gas velocities and different temperatures of different chlorination units are realized, the boiling chlorination reaction speed of the carbide slag of each grain size can be effectively kept, the average retention time of the carbide slag in the reactor can be prolonged, and the TiC chlorination rate in the carbide slag is improved. Generally, in order to adapt to the characteristics of strong heat release and rapid contact reaction of the boiling chlorination of the carbide slag, the first chlorination unit 21 preferably controls the reaction speed by controlling the nitrogen amount, so as to effectively maintain the system temperature, i.e. the excessive TiC and insufficient chlorine amount. Determining the chlorine gas introduction amount according to the carbide slag feeding amount, and simultaneously adding a proper amount of nitrogen to ensure the fluidization state. The exothermic reaction and the temperature rise of carbide slag absorb heat, the reactor dissipates heat, the heat brought by the titanium tetrachloride is equal, and the temperature stability of the first unit of the reactor is ensured. Preferably, the second chlorination unit 22 and the third chlorination unit 23 are mainly sprayed with titanium tetrachloride to effectively control the temperature of the system. The third chlorination unit 23 mainly functions to improve the boiling chlorination efficiency of the carbide slag, and through the reaction of the first two units, the reaction of the surface layer TiC in the carbide slag with chlorine is basically completed, and the chlorine must diffuse into the carbide slag along with the channel to contact and react with TiC, so that the reaction difficulty is large, the reaction time is long, the residence time is prolonged, and the reaction temperature needs to be properly increased to improve the reaction speed.
In terms of slag discharge of the boiling chlorination furnace 2, the TiC content in the carbide slag is low, so that the slag amount after chlorination reaction is large, the third unit adopts a lower slag discharge mode, the carbide slag can be discharged in time after the reaction in the reactor is finished, the effective utilization rate of the reactor is kept, and meanwhile, the carbide slag can be prevented from being over-chlorinated to generate CaCl in the furnace for the same retention time2And MgCl2Influencing the stable operation of the chlorination furnace.
As for the cyclone dust collection system 3, the grain size distribution of the carbide slag is wide, so that fine-fraction carbide slag is easy to separate from a reaction device along with gas phase in the chlorination process, and in order to keep the principle that the solid content of titanium tetrachloride is as low as possible, double cyclone dust collection is designed, so that the carbide slag particles which are not completely reacted are effectively collected, and the TiC content in dust is detected according to the reaction condition, so that whether the carbide slag is returned to a third chlorination unit of a chlorination furnace is determined, and the TiC chlorination rate in the carbide slag is improved.
According to the invention, according to the boiling chlorination characteristics of the carbide slag, a plurality of chlorination unit reactors are adopted, the reaction speed and the gas speed of the carbide slag are effectively matched by controlling the chlorination gas speed of each unit, and meanwhile, the carbide slag sequentially passes through each chlorination unit in an overflow mode, so that the retention time of the carbide slag in the boiling chlorination furnace is prolonged, and the TiC chlorination rate in the carbide slag is improved. Secondly, the invention diagnoses the boiling chlorination reaction condition by optimizing the process system of feeding, gas supply, temperature control, slag discharge and the like and utilizing the temperature and pressure display of each chlorination unit in the boiling chlorination furnace, adjusts the raw material amount and the gas addition amount according to different conditions,the continuous and stable operation of the boiling chlorination furnace is ensured by controlling the types and the amount of gas. Thirdly, according to the chlorination characteristic of the carbide slag, the dust collection system adopts double cyclone to collect dust, so that the fine chlorination tailings can be effectively collected; the third chlorination unit can be added into the dust collection material as required for chlorination reaction, so that the chlorination efficiency of the carbide slag is further improved. In addition, according to the boiling chlorination characteristics of the carbide slag, the bottom deslagging manner is adopted in the production, so that the utilization efficiency of the reactor can be improved, and the phenomenon that the carbide slag stays in the furnace for a long time to generate CaCl through over-chlorination can be effectively prevented2And MgCl2The stable operation of the chlorination furnace is influenced, and the efficiency of the chlorination system is improved.
Examples
Firstly, carbide slag (high-temperature pretreated titanium-containing blast furnace slag is cooled and crushed) is conveyed into a high-level bin by using a bucket elevator or gas conveying, and the loading amount of the high-level bin is 4-10 times of the hourly feeding amount.
And secondly, designing the reactor into a plurality of units according to the characteristics of reaction materials, and designing the effective volume of the reaction chamber according to the reaction control requirement. Determining the first unit feeding amount according to the effective reaction area of each unit of the reactor, measuring and calculating the second unit feeding amount and the third unit feeding amount, calculating the fluidizing gas velocity and the fluidizing medium amount of each unit, participating in the reaction TiC amount, and calculating the tetrachloro spraying amount of the second unit and the third unit according to the thermal balance condition of a reaction system.
Thirdly, according to the chlorination reaction characteristics of the carbide slag, the effective reaction volume of three units of the reactor is designed to be 9:7:4, wherein the chlorination rate of the first unit TiC is 40% -60%, the chlorination rate of the second unit TiC is 20% -40%, and the chlorination rate of the third unit TiC is 10% -30%, so that the TiC chlorination effect in the carbide slag is ensured.
The TiC chlorination reaction difficulty in the carbide slag is gradually increased along with the chlorination reaction, and in order to keep the chlorination fast and efficiently, the reaction temperature of each chlorination unit is gradually increased, the reaction temperature of a first unit system is controlled to be 385-555 ℃, the reaction temperature of a second unit system is controlled to be 455-600 ℃, and the reaction temperature of a third unit system is controlled to be 500-650 ℃; in order to keep the chlorination rate of the carbide slag, the fluidizing gas speed of each unit is reduced in sequence, the fluidizing gas speed of the first unit is controlled to be 0.58-0.25 m/s, the fluidizing gas speed of the second unit is controlled to be 0.35-0.15 m/s, and the fluidizing gas speed of the third unit is controlled to be 0.20-0.05 m/s.
Fifthly, adding carbide slag from the middle lower part of the first unit of the boiling chlorination reactor, sequentially chlorinating through the second unit and the third unit under the action of gas, discharging slag from the bottom of the third unit after chlorination, adjusting a feeding system to ensure that the first unit, the second unit and the third unit are gradually started for feeding in the chlorination furnace, and gradually starting TiCl4The collection system, the tail gas treatment system and the whole process can stably operate. And (3) deslagging for 1 time every 2-8 hours by using the double-cyclone dust collector, wherein the deslagging is detected, the TiC content is less than 1.5%, the content is low, and the chlorination furnace is not returned to carry out secondary chlorination. The whole process is continuously and stably operated, the chlorination rate of the carbide slag is high and is stabilized to be more than 85%, fine-particle carbide slag is effectively collected by double-cyclone dust removal, the content of solid particles of coarse titanium tetrachloride is reduced by about 20% compared with that of single-cyclone dust removal, the refining treatment difficulty of the coarse titanium tetrachloride is reduced, and the effect is very obvious. Wherein the components of each component are as follows:
TABLE 1 typical composition of carbide slag
TABLE 2 typical particle size distribution of carbide slag
TABLE 3 typical composition of chlorinated tailings
According to the reaction characteristics of the carbide slag (selective TiC chlorination, gas-solid contact reaction, violent reaction in the early stage, slow reaction in the later stage, strong exothermic reaction, timely discharge of exothermic reaction, and stable system temperature), the reaction is divided into a plurality of units, the reaction speed is regulated and controlled by different measures, the reaction heat is quickly removed, the temperature is kept stable, the boiling chlorination gas speed is gradually reduced to be matched with the boiling chlorination gas speed, the reaction time of the carbide slag in a furnace is prolonged, the chlorination rate is improved, and meanwhile, fine-grained chlorination tailings brought out by tail gas are collected by adopting double-cyclone dust removal, so that the content of solid particles in the crude titanium tetrachloride is reduced, the high carrying rate during chlorination of the carbide slag is effectively controlled, the chlorination rate is low, and the cost is. Because the slagging operation difficulty is big among the cremation process, the problem such as environmental pollution is leaked to chlorine among the slagging process, through optimizing chlorination furnace structure, air feeder, feeding device, adapted to the carbide slag boiling chlorination reaction of particle size distribution broad, on guaranteeing carbide slag chlorination reaction kinetic condition, chlorination efficiency basis, promoted the TiC chlorination rate. The rapid, efficient and economical fluidized bed chlorination process of the carbide slag is realized.
The invention has good continuous stability and high efficiency; the equipment is simple to manufacture, the investment is low, the occupied area is small, the continuity is good, the energy consumption is low, the operation is stable, the processing capacity is high, the industrialization is easy, the technical advantages are very obvious, and the market popularization prospect is wide.
Claims (10)
1. Titanium-containing blast furnace slag chlorination device, including charging system (1), boiling chlorination furnace (2), whirlwind dust collecting system (3) and titanium tetrachloride collecting system (4) that communicate in proper order, its characterized in that: the device comprises a boiling chlorination furnace (2), and is characterized in that the boiling chlorination furnace (2) is internally and sequentially divided into a first chlorination unit (21), a second chlorination unit (22) and a third chlorination unit (23) which are communicated with each other, wherein the first chlorination unit (21) is communicated with an inlet (25) of the boiling chlorination furnace (2), and the bottoms of the first chlorination unit (21), the second chlorination unit (22) and the third chlorination unit (23) are respectively and correspondingly provided with a first purging inlet (211), a second purging inlet (221) and a third purging inlet (231).
2. The titanium-containing blast furnace slag chlorination plant according to claim 1, wherein: the first purge inlet (211) is in communication with the first nitrogen inlet (212) and the first chlorine inlet (213), respectively.
3. The titanium-containing blast furnace slag chlorination plant according to claim 2, wherein: the first nitrogen inlet (212) is connected with the boiling chlorination furnace inlet (25) through an inlet purging pipeline (214).
4. The titanium-containing blast furnace slag chlorination plant according to claim 1, wherein: the second purge inlet (221) communicates with the second nitrogen inlet (222) and the second chlorine inlet (223).
5. The titanium-containing blast furnace slag chlorination plant according to claim 1, wherein: the third purge inlet (231) is in communication with the third nitrogen inlet (232) and the third chlorine inlet (233).
6. The titanium-containing blast furnace slag chlorination plant according to claim 1, 2, 3, 4 or 5, wherein: and a dust collecting slag outlet (31) is formed in the bottom of the cyclone dust collecting system (3).
7. The titanium-containing blast furnace slag chlorination plant according to claim 1, 2, 3, 4 or 5, wherein: the titanium tetrachloride collecting system (4) is communicated with the boiling chlorination furnace (2) through a coarse titanium tetrachloride return spray pipeline (41).
8. The titanium-containing blast furnace slag chlorination plant according to claim 1, 2, 3, 4 or 5, wherein: the titanium tetrachloride collecting system (4) is provided with a tail gas treatment pipeline (43).
9. The titanium-containing blast furnace slag chlorination plant according to claim 1, 2, 3, 4 or 5, wherein: the boiling chlorination furnace (2) is provided with a chlorination tailing discharging pipeline (24).
10. The titanium-containing blast furnace slag chlorination plant according to claim 1, 2, 3, 4 or 5, wherein: the cyclone dust collecting system (3) is of a double cyclone dust collecting structure.
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| CN112624194A (en) * | 2021-01-04 | 2021-04-09 | 湖南省华京粉体材料有限公司 | Method for preparing high-purity hafnium tetrachloride by one-step method |
| CN113184900A (en) * | 2021-05-12 | 2021-07-30 | 攀钢集团钒钛资源股份有限公司 | Titanium tetrachloride production method and system and raw material ratio adjusting method |
| CN113277553A (en) * | 2021-06-29 | 2021-08-20 | 蚌埠中瓷纳米科技有限公司 | Two-stage dust removal device and method for preparing titanium tetrachloride |
| CN113651355A (en) * | 2021-09-13 | 2021-11-16 | 攀钢集团钒钛资源股份有限公司 | Titanium dioxide production system and method for distributing chlorine |
| CN114701862A (en) * | 2022-04-13 | 2022-07-05 | 龙佰禄丰钛业有限公司 | Lower slag discharging device and method for chlorination furnace bed waste slag |
| CN115180647A (en) * | 2022-08-25 | 2022-10-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Efficient boiling chlorination method for carbide slag |
| CN115367790A (en) * | 2022-08-26 | 2022-11-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Method and device for preparing titanium tetrachloride |
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| CN115180647A (en) * | 2022-08-25 | 2022-10-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Efficient boiling chlorination method for carbide slag |
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Application publication date: 20201120 |