CN111663053A - Recycling method of titanium extraction tailings - Google Patents
Recycling method of titanium extraction tailings Download PDFInfo
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- CN111663053A CN111663053A CN202010606136.2A CN202010606136A CN111663053A CN 111663053 A CN111663053 A CN 111663053A CN 202010606136 A CN202010606136 A CN 202010606136A CN 111663053 A CN111663053 A CN 111663053A
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- magnetic separation
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- chlorination
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- 239000010936 titanium Substances 0.000 title claims abstract description 73
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000000605 extraction Methods 0.000 title claims abstract description 41
- 238000004064 recycling Methods 0.000 title claims abstract description 22
- 238000005660 chlorination reaction Methods 0.000 claims abstract description 64
- 238000007885 magnetic separation Methods 0.000 claims abstract description 39
- 239000012141 concentrate Substances 0.000 claims abstract description 25
- 238000009835 boiling Methods 0.000 claims abstract description 22
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 9
- 239000001110 calcium chloride Substances 0.000 claims abstract description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 7
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 4
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 4
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 12
- 239000000460 chlorine Substances 0.000 claims description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 9
- 229910052801 chlorine Inorganic materials 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000004566 building material Substances 0.000 description 4
- 238000005243 fluidization Methods 0.000 description 4
- 229910003074 TiCl4 Inorganic materials 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 239000006148 magnetic separator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1236—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching
- C22B34/124—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching using acidic solutions or liquors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to a recycling method of titanium extraction tailings, belonging to the field of titanium resource utilization. The invention provides a recycling method of titanium extraction tailings, which comprises the following steps: taking and extracting titanium tailings, washing with water, carrying out magnetic separation, drying the obtained magnetic separation concentrate, and carrying out boiling chlorination treatment to obtain titanium tetrachloride; wherein the titanium extraction tailings comprise the following components in percentage by mass: TiC 2% -3.5%, TTi 11% -14%, TFe 1.2% -1.7%, SiO220～28％、FeO 1％～2％、MgCl20.1％～1％、CaCl22 to 4 percent. After the method is adopted to treat the tailings of extracting the titanium, the TiC in the tailings is reduced to be less than 1.0 percent, the recovery rate of the Ti in the whole process flow is more than 80 percent, and the method has important significance for improving the utilization rate of the Ti in the tailings.
Description
Technical Field
The invention relates to a recycling method of titanium extraction tailings, belonging to the field of titanium resource utilization.
Background
Titanium tetrachloride is an important raw material for preparing titanium sponge and titanium dioxide, and one of the production methods is to adopt TiO2Blast furnace slag with 20-25% of contentAnd (2) adding carbon at the temperature for smelting to obtain carbide slag with the TiC content of about 12-15%, and carrying out chlorination reaction on the TiC and chlorine at the low temperature of 450-500 ℃, so as to extract and utilize titanium in the blast furnace slag. In the whole low-temperature chlorination reaction process, even if TiC is fully consumed, residues after the chlorination reaction, the total weight of which is 80-85%, still remain. Calculated by the yield of titanium tetrachloride produced in the prior steel climbing production, the yield of titanium extraction tailings is about 2-3 ten thousand tons every year, the TiC content in the titanium extraction tailings is about 2-3.5%, and chloride ions in the titanium extraction tailings are generally removed and then used in the building material industry at present, so that the great waste of titanium resources is caused. Therefore, how to treat and efficiently utilize the titanium extraction tailings has great significance for improving the comprehensive utilization rate of titanium resources.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a method for recycling titanium tailings.
The invention provides a recycling method of titanium extraction tailings, which comprises the following steps: taking and extracting titanium tailings, washing with water, carrying out magnetic separation, drying the obtained magnetic separation concentrate, and carrying out boiling chlorination treatment to obtain titanium tetrachloride; wherein the titanium extraction tailings comprise the following components in percentage by mass: TiC 2% -3.5%, TTi 11% -14%, TFe1.2% -1.7%, SiO220～28％、FeO1％～2％、MgCl20.1％～1％、CaCl22％～4％。
Further, the titanium extraction tailings are residues generated after chlorination of carbonized blast furnace slag.
Preferably, the TiO in the blast furnace slag2The content is 20-25%.
Further washing the titanium extraction tailings with water to obtain MgCl2The content of CaCl is less than 0.03 percent2The content is less than 0.03%.
Further, the magnetic separation satisfies at least one of the following conditions:
wet magnetic separation is adopted;
the magnetic field intensity is 0.6-0.9T.
Further, magnetic separation concentrate and magnetic separation tailings are collected respectively after magnetic separation, wherein the concentrate: the mass ratio of tailings is (0.5-0.68): (0.82-1).
Further, the flue gas generated in the boiling chlorination process is used for drying the magnetic separation concentrate in the drying process.
Further, the boiling chlorination treatment uses a mixed gas of nitrogen and chlorine as a chlorination gas, wherein the ratio of nitrogen: the volume ratio of the chlorine gas is 2: 1-3: 1.
Furthermore, the flow rate of the gas for the boiling chlorination treatment is 2.0-3.0L/min.
Further, the chlorination temperature is 450-500 ℃.
Further, the average residence time of the magnetic separation concentrate in the fluidized bed chlorination furnace is 3-5 min.
Reducing the steel-climbing blast furnace slag by carbon at high temperature to ensure that TiO in the slag2Converted to TiC and the corresponding slag is called carbide slag. The carbonized slag is subjected to low-temperature selective chlorination at the temperature of below 700 ℃, and titanium in the blast furnace slag is treated with TiCl4Is extracted, which is a process for extracting titanium from low-grade and complex titanium raw materials such as the Panzhi steel blast furnace slag. Wherein, the residue generated after the chlorination reaction is the titanium extraction tailings.
According to some embodiments of the invention, the apparatus used for the boiling chlorination treatment is a phi 50mm batch low-temperature boiling chlorination furnace. Preferably, the feed amount for the boiling chlorination is 200 g. According to the requirement, the fluidized reactor can be enlarged by boiling chlorination treatment, and the treatment capacity of the titanium extraction tailings is improved.
The invention provides a recycling method of titanium extraction tailings, which is used for treating the titanium extraction tailings, the TiC in the tailings is reduced to be less than 1.0%, the recovery rate of Ti in the whole process flow is more than 80%, and the recycling method has important significance for improving the utilization rate of Ti in the tailings. In addition, the titanium extraction tailings treatment process provided by the invention is initiated at home and abroad, the process flow is simple, and the used equipment is common equipment, so that the titanium extraction tailings treatment process has a good popularization and application prospect.
Drawings
FIG. 1 is a schematic view of a typical process flow of titanium tailing treatment in the example.
Detailed Description
The invention provides a recycling method of titanium extraction tailings, which comprises the following steps: taking and extracting titanium tailings, washing with water, carrying out magnetic separation, drying the obtained magnetic separation concentrate, and carrying out boiling chlorination treatment to obtain titanium tetrachloride; wherein the titanium extraction tailings comprise the following components in percentage by mass: TiC 2% -3.5%, TTi 11% -14%, TFe1.2% -1.7%, SiO220～28％、FeO1％～2％、MgCl20.1％～1％、CaCl22％～4％。
The present invention has been completed based on the following findings of the inventors: 2 to 3.5 percent of TiC remains in the titanium extraction tailings, which indicates that the chlorination reaction is not completely carried out. Although it is theoretically possible to extend the chlorination reaction time continuously to obtain higher conversion rate, in practice, as the reaction time is prolonged, it is found that some substances in a molten state are more and more accumulated in the bed layer, so that particles are bonded, the fluidization furnace condition is worsened, and even the sieve plate holes are blocked, and the chlorination operation cannot be normally carried out. The inventor analyzes the chemical compositions of the titanium extraction tailings and the molten state substances to obtain the byproduct CaCl mainly caused by chlorination reaction2And MgCl2Causing the above-described situation. Therefore, the invention proposes that CaCl in the titanium extraction tailings is removed by water washing2And MgCl2Provides possibility for further chlorination of the tailings. And (3) carrying out magnetic separation after washing, wherein TiC and Fe are combined together, so that TiC particles in the slag can be separated, the TiC content is increased from 2.5-3.5% to 5.5-6.5%, and the particle size is slightly increased. And then the magnetic separation tailing can be used for preparing building materials, the magnetic separation concentrate can be dried by utilizing smoke generated in the boiling chlorination process of carbide slag, the dried magnetic separation concentrate returns to a chlorination furnace for boiling chlorination again, titanium resources in the titanium separation concentrate are extracted to prepare crude titanium tetrachloride, and raw material support is provided for titanium sponge and titanium dioxide. The process realizes the recycling of valuable components in the titanium tailings and improves the comprehensive utilization rate of titanium resources.
In the recycling method, the titanium extraction tailings are washed by water to remove water-soluble chloride CaCl2And MgCl2Reducing the amount of molten material produced, facilitating boilingThe fluidization state goes forward during chlorination. The TiC content in the titanium extraction tailings can be increased by magnetic separation treatment from 2.5% -3.5% to 5.5% -6.5%, the particle size of coarse particles is increased from 60-240 meshes to 90% to 60-150 meshes to 90%, and the fluidization state is better during boiling chlorination. By reasonably controlling chlorination parameters, the TiC content in the tailings after chlorination is reduced to below 1.0%. In the whole process flow, the tailings after titanium extraction from the carbide slag are subjected to series treatment and then returned to the boiling chlorination furnace for low-temperature chlorination treatment, so that the fluidization state is good, the chlorination rate reaches over 75 percent, and the recovery rate of Ti is over 80 percent.
The scheme of the invention will be explained with reference to the examples. It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Typical compositions of the titanium tailings used in the examples are shown in the following table:
TABLE 1 titanium tailings composition%
A typical process flow for titanium tailings treatment in the examples is shown in FIG. 1.
Example 1 titanium extraction tailings recycled by the method of the invention
After low-temperature chlorination treatment, the content of TiC in the titanium extraction tailings is 3.06 percent, and CaCl is added2And MgCl2The contents are 2.38% and 0.52%, respectively. Washing the titanium extraction tailings with water, wherein the washing water is common tap water to remove water-soluble chlorides of calcium chloride and magnesium chloride, and after washing, CaCl in the titanium extraction tailings2And MgCl2All contents are<0.03 percent. And (3) putting the washed titanium extraction tailings into a wet magnetic separator for magnetic separation treatment, wherein the feeding amount is 1.5Kg, and the magnetic field intensity is 0.8T. The concentrate after magnetic separation is 0.67Kg, and the tailing is 0.83 Kg. The TiC content in the concentrate is 6.27 percent, and the granularity of coarse particles is improved from 90 percent of 60-240 meshes to 90 percent of 60-150 meshes. Using the tailings after magnetic separation as a building material raw material, drying the magnetic separation concentrate by using flue gas after low-temperature chlorination, returning the magnetic separation concentrate after drying treatment to a low-temperature chlorination furnace for chlorination again to ensure that TiC and Cl are subjected to chlorination treatment2React to produce TiCl4. The device used for low-temperature chlorination is a phi 50mm intermittent low-temperature boiling chlorination furnace, and the feeding amount is 200 g. The gas used for chlorination is a mixed gas of nitrogen and chlorine, wherein the ratio of nitrogen: the volume ratio of the chlorine to the chlorine is 2:1, the flow rate of the mixed gas is 2.5L/min, the chlorination temperature is 450 ℃, and the average residence time of the magnetic separation concentrate in the boiling chlorination furnace is 4 min. The amount of the newly extracted titanium tailings after chlorination is 177g, and the content of TiC in the tailings is 0.89%. The recovery rate of titanium in the whole process flow is 80.03%.
Example 2 titanium extraction tailings recycled by the method of the invention
After low-temperature chlorination treatment, the content of TiC in the titanium extraction tailings is 3.06 percent, and CaCl is added2And MgCl2The contents are 2.38% and 0.52%, respectively. Washing the titanium extraction tailings with water, wherein the washing water is common tap water to remove water-soluble chlorides of calcium chloride and magnesium chloride, and after washing, CaCl in the titanium extraction tailings2And MgCl2All contents are<0.03 percent. And putting the washed titanium tailings into a wet magnetic separator for magnetic separation, wherein the feeding amount is 1.5Kg, and the magnetic field intensity is 0.9T. The concentrate after magnetic separation is 0.68Kg, and the tailing is 0.79 Kg. The content of TiC in the concentrate is 6.3%, and the particle size of coarse particles is increased from 90% of 60-240 meshes to 90% of 60-150 meshes. Using the tailings after magnetic separation as a building material raw material, drying the magnetic separation concentrate by using flue gas after low-temperature chlorination, returning the magnetic separation concentrate after drying treatment to a low-temperature chlorination furnace for chlorination again to ensure that TiC and Cl are subjected to chlorination treatment2React to produce TiCl4. The device used for low-temperature chlorination is a phi 50mm intermittent low-temperature boiling chlorination furnace, and the feeding amount is 200 g. The gas used for chlorination is a mixed gas of nitrogen and chlorine, wherein the ratio of nitrogen: the volume ratio of chlorine to chlorine is 3:1, the flow rate of the mixed gas is 3L/min, the chlorination temperature is 500 ℃, and the average residence time of the magnetic separation concentrate in the boiling chlorination furnace is 5 min. The amount of the newly extracted titanium tailings after chlorination is 172g, and the TiC content in the tailings is 0.84%. Recovery of titanium in the whole processThe ratio was 82.66%.
It should be appreciated that the particular features, structures, materials, or characteristics described in this specification may be combined in any suitable manner in any one or more embodiments. Furthermore, the various embodiments and features of the various embodiments described in this specification can be combined and combined by one skilled in the art without contradiction.
Claims (10)
1. The recycling method of the titanium extraction tailings is characterized by comprising the following steps: the method comprises the following steps: taking and extracting titanium tailings, washing with water, carrying out magnetic separation, drying the obtained magnetic separation concentrate, and carrying out boiling chlorination treatment to obtain titanium tetrachloride; wherein the titanium extraction tailings comprise the following components in percentage by mass: TiC 2% -3.5%, TTi 11% -14%, TFe 1.2% -1.7%, SiO220～28％、FeO 1％～2％、MgCl20.1％～1％、CaCl22％～4％。
2. The recycling method according to claim 1, wherein: the titanium extraction tailings are residues generated after chlorination of carbonized blast furnace slag; preferably, the TiO in the blast furnace slag2The content is 20-25%.
3. The recycling method according to claim 1, wherein: washing with water to obtain MgCl in the titanium extraction tailings2The content of CaCl is less than 0.03 percent2The content is less than 0.03%.
4. The recycling method according to claim 1, wherein: the magnetic separation satisfies at least one of the following conditions: wet magnetic separation is adopted; the magnetic field intensity is 0.6-0.9T.
5. The recycling method according to claim 1, wherein: respectively collecting magnetic separation concentrate and magnetic separation tailings after magnetic separation, wherein the concentrate comprises the following components: the mass ratio of tailings is (0.5-0.68): (0.82-1).
6. The recycling method according to claim 1, wherein: the drying adopts flue gas generated in the boiling chlorination process to dry the magnetic separation concentrate.
7. The recycling method according to claim 1, wherein: the boiling chlorination treatment uses a mixed gas of nitrogen and chlorine as a chlorination gas, wherein the ratio of nitrogen: the volume ratio of the chlorine gas is 2: 1-3: 1.
8. The recycling method according to claim 1 or 7, wherein: the gas flow rate of the boiling chlorination treatment is 2.0-3.0L/min.
9. The recycling method according to claim 1, wherein: the chlorination temperature is 450-500 ℃.
10. The recycling method according to claim 1, wherein: the average residence time of the magnetic separation concentrate in the fluidized bed chlorination furnace is 3-5 min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115351053A (en) * | 2022-09-23 | 2022-11-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for treating chlorination tailings |
| CN116272850A (en) * | 2023-05-09 | 2023-06-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation of porous adsorption material by titanium extraction tailings coupled mineralization and CO sequestration 2 Method and application of (2) |
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