WO2015089829A1 - 一种由锆英砂制备氧氯化锆的方法 - Google Patents
一种由锆英砂制备氧氯化锆的方法 Download PDFInfo
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- WO2015089829A1 WO2015089829A1 PCT/CN2013/090121 CN2013090121W WO2015089829A1 WO 2015089829 A1 WO2015089829 A1 WO 2015089829A1 CN 2013090121 W CN2013090121 W CN 2013090121W WO 2015089829 A1 WO2015089829 A1 WO 2015089829A1
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- WIPO (PCT)
- Prior art keywords
- liquid
- zirconium
- zircon sand
- zirconium oxychloride
- hydrochloric acid
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000004576 sand Substances 0.000 title claims abstract description 46
- 229910052845 zircon Inorganic materials 0.000 title claims abstract description 46
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 title claims abstract description 46
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 75
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000007787 solid Substances 0.000 claims abstract description 40
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000003513 alkali Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 27
- 238000005406 washing Methods 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 230000004927 fusion Effects 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000005189 flocculation Methods 0.000 claims abstract description 9
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000016615 flocculation Effects 0.000 claims abstract description 7
- 230000006641 stabilisation Effects 0.000 claims abstract description 6
- 238000011105 stabilization Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 239000002893 slag Substances 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 43
- 239000013078 crystal Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 17
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- 238000002425 crystallisation Methods 0.000 claims description 10
- 230000008025 crystallization Effects 0.000 claims description 10
- 230000009466 transformation Effects 0.000 claims description 9
- 238000005903 acid hydrolysis reaction Methods 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005554 pickling Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- -1 cationic quaternary ammonium salts Chemical class 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- BVTJGGGYKAMDBN-UHFFFAOYSA-N Dioxetane Chemical compound C1COO1 BVTJGGGYKAMDBN-UHFFFAOYSA-N 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000001465 metallisation Methods 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 11
- 230000002378 acidificating effect Effects 0.000 abstract description 3
- 239000008394 flocculating agent Substances 0.000 abstract description 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 2
- 150000001340 alkali metals Chemical class 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 18
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 15
- 238000004321 preservation Methods 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 238000000354 decomposition reaction Methods 0.000 description 7
- 230000007704 transition Effects 0.000 description 7
- 238000007599 discharging Methods 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000007499 fusion processing Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- DJOYTAUERRJRAT-UHFFFAOYSA-N 2-(n-methyl-4-nitroanilino)acetonitrile Chemical compound N#CCN(C)C1=CC=C([N+]([O-])=O)C=C1 DJOYTAUERRJRAT-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- QRTRRDMHGTZPBF-UHFFFAOYSA-L oxygen(2-);zirconium(4+);sulfate Chemical compound [O-2].[Zr+4].[O-]S([O-])(=O)=O QRTRRDMHGTZPBF-UHFFFAOYSA-L 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- IEORSVTYLWZQJQ-UHFFFAOYSA-N 2-(2-nonylphenoxy)ethanol Chemical compound CCCCCCCCCC1=CC=CC=C1OCCO IEORSVTYLWZQJQ-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- KGBUQHGXOAESDX-UHFFFAOYSA-N [Zr].OOO Chemical compound [Zr].OOO KGBUQHGXOAESDX-UHFFFAOYSA-N 0.000 description 1
- AZJLMWQBMKNUKB-UHFFFAOYSA-N [Zr].[La] Chemical compound [Zr].[La] AZJLMWQBMKNUKB-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229920000847 nonoxynol Polymers 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
- XJUNLJFOHNHSAR-UHFFFAOYSA-J zirconium(4+);dicarbonate Chemical compound [Zr+4].[O-]C([O-])=O.[O-]C([O-])=O XJUNLJFOHNHSAR-UHFFFAOYSA-J 0.000 description 1
- ZXAUZSQITFJWPS-UHFFFAOYSA-J zirconium(4+);disulfate Chemical compound [Zr+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZXAUZSQITFJWPS-UHFFFAOYSA-J 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
Definitions
- the invention relates to a method for preparing zirconium oxychloride from zircon sand. Specifically, the invention relates to a method for continuously decomposing zircon sand, water washing, acidic condition transformation, low temperature acid hydrolysis and primary crystallization by rotary alkali kiln. A new method for preparing zirconium oxychloride. Background technique
- Zirconium oxychloride is an important basic chemical product and raw material for zirconium compounds. It is the main raw material for the production of zirconium lanthanum from zirconium dioxide, zirconium carbonate, zirconium sulfate, composite zirconia and zirconium and hafnium. It can also be used in textile, leather, Rubber additives, metal surface treatment agents, paint desiccants, refractories, ceramics, catalysts, fire retardants and other products.
- the conventional methods for preparing zirconium oxychloride include a two-acid two-base method, an acid-base method, a chlorination method, and the like, and an acid-base method is a commonly used method.
- the conventional one-acid-alkali method mainly includes the steps of alkali fusion, water washing, transformation, acid hydrolysis, flocculation, evaporation crystallization, pickling, etc., and has the following disadvantages: (1) The existing alkali fusion process is mainly carried out intermittently in the sintering pot.
- the zirconium precipitate is heated and dissolved in a large amount of hydrochloric acid, followed by cooling to obtain zirconium oxychloride.
- the method has the problems of high impurity content of the product and low product yield, and the alkali fusion process adopts sodium hydroxide as a decomposing agent in the method, and the continuous production of the process cannot be realized.
- Patent CN96103606.0 discloses a method for preparing zirconium oxychloride, which is obtained by diluting calcium zirconate formed by thermal decomposition reaction of calcium carbonate and zircon sand with dilute hydrochloric acid, and adding calcium zirconate in the above hydrochloric acid to sulfuric acid or alkali solution.
- the method uses calcium carbonate for calcination of zircon sand, the reaction temperature is above 120 CTC, the energy consumption is high, and the process is long, and there are economic problems.
- the present invention provides a novel process for producing zirconium oxychloride from zircon sand.
- the new process Through the application of the new process, the continuous stable decomposition of zircon sand in the alkali fusion process can be realized, and the zirconium oxychloride can be changed from two crystals to one crystal, which shortens the production cycle and reduces the cost.
- the method for preparing zirconium oxychloride from zircon sand of the present invention comprises the following steps:
- Acid hydrolysis Add hydrochloric acid with acidity of 5-8 mol/L to the obtained transition material, stir evenly, heat to 50-90 ° C, keep for 1-10 hours, then add silicon residue to obtain zirconium solution. ;
- the rotary kiln according to step 1) is heated in three stages, wherein the preheating section, the high temperature section and the holding section temperature are respectively 500-650 ° C, 600 -800 °C, 600-800 °C, the reaction time of the materials in each section is 10-40 minutes.
- the alkali metal hydroxide is preferably sodium hydroxide or potassium hydroxide.
- the water washing step can be repeated 2-3 times to optimize the water washing effect.
- the hydrochloric acid is added in an amount of from 2 to 4 in the pH of the solution.
- the zirconium liquid obtained has a acidity of 4-6 mol/L and a zirconium concentration of 80-120 g/L.
- the hydrochloric acid is added in an amount such that the acidity of the acid hydrolyzate is maintained at 5 to 6.5 mol/L.
- the acid hydrolysis step is preferably performed by steam heating, and the acid solution is kept from boiling.
- the flocculant has a mass concentration of from 1% to 10%, and the amount of addition is from 0.15% to 0.5% by volume of the zirconium solution.
- the flocculating agent is one of polyacrylamide, cationic quaternary ammonium salt and nonylphenol ethoxylate (OP-10), and most preferably polyacrylamide.
- the method for producing zirconium oxychloride from zircon sand of the present invention ensures that crystallization of zirconium oxychloride does not occur during low temperature acid hydrolysis and flocculation.
- the method of the invention can realize the continuous decomposition of zircon sand by the stepwise alkali addition method, and the rotary furnace equipment can realize the recovery of the alkali mist to achieve the purpose of clean production; the acidity adjustment by controlling the transformation process
- the deep removal of alkali metal is achieved, and the step of adding alkali is omitted, which can greatly save the cost; low-temperature acid-disintegration flocculation, energy saving; and realizes that two crystals become one-time crystallization, which greatly shortens the production cycle and saves The cost.
- the method of the invention has the advantages that: the stepwise alkali fusion by the rotary kiln can realize the continuous decomposition of the zircon sand; the transformation of the alkali-depleted metal under the acidic condition, the alkali removal is omitted Neutralization, saving cost; using low-temperature acid hydrolysis, saving energy, and facilitating subsequent flocculation and desiliconization; silicon slag washing liquid is returned for reuse, which is conducive to clean production; zirconia can be obtained by one-time crystallization The first cooling and crystallization step in the acid-alkali process is omitted, the production cycle is shortened, and the production efficiency is improved. Specific form
- Example 1 The method for producing zirconium oxychloride from zircon sand of the present invention will be described in detail by way of the following examples.
- Example 1 The method for producing zirconium oxychloride from zircon sand of the present invention will be described in detail by way of the following examples.
- the zircon sand and sodium hydroxide are uniformly mixed according to the weight ratio of 1:0.8, and are conveyed to the rotary kiln through the screw feeder, and sequentially pass through the preheating section, the high temperature section, the heat preservation section, and the preheating section temperature is 500 ° C, the material After staying for 40 minutes, enter the high temperature section, the temperature of the high temperature section is controlled at 800 °C, the material stays for 40 minutes, then the material enters the heat preservation section, the temperature is controlled at 700 °C, and the intermediate baking material is obtained after staying for 10 minutes, and the middle roasting is performed after discharging.
- the material is uniformly mixed with the weight ratio of sodium hydroxide to 1:0.5, and conveyed to another rotary kiln through a screw feeder.
- the temperature of the preheating section, the high temperature section and the heat preservation section is controlled as the same as the previous rotary kiln, and the residence time of each section is respectively 10 minutes, 10 minutes, 10 minutes, the roasting material can be obtained by discharging.
- the calcined material was washed with hot water at 80 ° C, washed at a liquid-solid ratio of 6:1, and washed twice to obtain a water-washed material.
- the zirconium solution is heated by steam and concentrated, and the acidity is 6 mol/L.
- the zirconium concentration is 200 g/L, it is left to be naturally cooled to obtain zirconium oxychloride crystals, and the crystals are separated by liquid-solid separation, and then used.
- the hydrochloric acid having an acidity of 6 mol/L was rinsed to obtain a qualified zirconia product.
- the zircon sand and sodium hydroxide are uniformly mixed according to the weight ratio of 1:0.3, and conveyed to the rotary kiln through the screw feeder, and sequentially pass through the preheating section, the high temperature section and the heat preservation section, and the preheating section temperature is 650 ° C, the material After staying for 10 minutes, enter the high temperature section, the temperature of the high temperature section is controlled at 800 °C, the material stays for 40 minutes, then the material enters the heat preservation section, the temperature is controlled at 600 °C, and the intermediate baking material is obtained after 40 minutes of residence, and the middle roasting is performed after discharging.
- the material is uniformly mixed with the weight ratio of sodium hydroxide 1:1, and is conveyed to another rotary kiln through a screw feeder.
- the temperature of the preheating section, the high temperature section, the heat preservation section and the residence time will be the same as that of the previous rotary kiln.
- a calcined material is obtained.
- the calcined material was washed with hot water at 40 ° C, washed at a liquid-solid ratio of 4:1, and washed three times to obtain a water-washed material.
- 70 ° C hot water was added to the water washing material according to the ratio of liquid to solid ratio of 1:1, and then the pH of the solution was adjusted to 3 with hydrochloric acid having an acidity of 4 mol/L. After stabilization, the water was added at a ratio of liquid to solid ratio of 6:1. Then liquid-solid separation is carried out to obtain a transition material.
- the acidity of the acid solution is 5mol/L, heating to 60°C, holding for 10 hours, and then adding the washing residue to control the acidity of the solution to 5mol/L.
- the zirconium concentration was 80 g/L, and then a polyacrylamide having a mass concentration of 10% was added in a ratio of 0.5% by volume, stirred for 5 hours, and then subjected to liquid-solid separation to obtain a desiliconized zirconium solution.
- the zirconium liquid is heated by steam and concentrated, and the acidity is 5 mol/L.
- the zirconium concentration is 160 g/L, it is left to be naturally cooled to obtain zirconium oxychloride crystals, and the crystals are separated by liquid-solid separation, and then the acidity is used. 5 mol/L hydrochloric acid was rinsed to obtain a qualified zirconia product.
- the zircon sand and sodium hydroxide are uniformly mixed according to the weight ratio of 1:0.6, and are conveyed to the rotary kiln through the screw feeder, and sequentially pass through the preheating section, the high temperature section and the heat preservation section, and the preheating section temperature is 550 ° C, the material After staying for 20 minutes, enter the high temperature section, the temperature of the high temperature section is controlled at 750 °C, the material stays for 20 minutes, then the material enters the holding section, the temperature is controlled at 600 °C, and the intermediate baking material is obtained after staying for 40 minutes, and the middle roasting is performed after discharging.
- the material is uniformly mixed with the weight ratio of sodium hydroxide to 1:0.7, and is conveyed to another rotary kiln through a screw feeder.
- the temperature of the preheating section, the high temperature section, the heat preservation section and the residence time will be the same as that of the previous rotary kiln.
- a calcined material is obtained.
- the calcined material was washed with hot water at 60 ° C, washed at a liquid-solid ratio of 5:1, and washed twice to obtain a water-washed material.
- the zirconium solution is heated by steam and concentrated, and the acidity is 5.8 mol/L.
- the zirconium concentration is 180 g/L, it is left to be naturally cooled to obtain zirconium oxychloride crystals, and the crystals are separated by liquid-solid separation, and then acidity is used.
- the 5.8 mol/L hydrochloric acid was rinsed to obtain a qualified zirconia product.
- the zircon sand and potassium hydroxide are uniformly mixed according to the weight ratio of 1:0.8, and are conveyed to the rotary kiln through the screw feeder, and sequentially pass through the preheating section, the high temperature section and the heat preservation section, and the preheating section temperature is 550 ° C, the material After staying for 20 minutes, enter the high temperature section, the temperature of the high temperature section is controlled at 600 °C, the material stays for 20 minutes, then the material enters the heat preservation section, the temperature is controlled at 600 ° C, and the intermediate baking material is obtained after 40 minutes of residence, and the middle roasting is performed after discharging.
- the material is uniformly mixed with potassium hydroxide at a weight ratio of 1:0.3, and conveyed to another rotary kiln through a screw feeder.
- the preheating section, the high temperature section, the temperature of the heat preservation section and the residence time are the same as the previous rotary kiln.
- a calcined material is obtained.
- the calcined material was washed with hot water at 60 ° C, washed at a liquid-solid ratio of 5:1, and washed twice to obtain a water-washed material.
- the zirconium solution is heated by steam and concentrated, and the acidity is 5.8 mol/L.
- the zirconium concentration is 180 g/L, it is left to be naturally cooled to obtain zirconium oxychloride crystals, and the crystals are separated by liquid-solid separation, and then acidity is used.
- the 6.5 mol/L hydrochloric acid was rinsed to obtain a qualified zirconia product.
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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PCT/CN2013/090121 WO2015089829A1 (zh) | 2013-12-20 | 2013-12-20 | 一种由锆英砂制备氧氯化锆的方法 |
ZA2016/02080A ZA201602080B (en) | 2013-12-20 | 2016-03-29 | Method for preparing zirconium oxychloride from zircon sand |
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Application Number | Priority Date | Filing Date | Title |
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PCT/CN2013/090121 WO2015089829A1 (zh) | 2013-12-20 | 2013-12-20 | 一种由锆英砂制备氧氯化锆的方法 |
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ZA (1) | ZA201602080B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108059186A (zh) * | 2017-12-25 | 2018-05-22 | 山东磊宝锆业科技股份有限公司 | 以固体废锆为原料水热法制备氧化锆粉体的方法 |
WO2020124238A1 (en) * | 2018-12-19 | 2020-06-25 | Rio Tinto Iron And Titanium Canada Inc. | Process for purifying a zircon sand |
CN113753950A (zh) * | 2021-10-14 | 2021-12-07 | 云南国钛金属股份有限公司 | 一种核级氧化锆的制备方法 |
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JPH03265519A (ja) * | 1990-03-16 | 1991-11-26 | Daiso Co Ltd | オキシ塩化ジルコニウムの製造方法 |
CN101746730A (zh) * | 2009-12-16 | 2010-06-23 | 北京有色金属研究总院 | 一种碱熔分解锆英石工艺 |
CN103011278A (zh) * | 2013-01-11 | 2013-04-03 | 周涛 | 低耗碱水热制备氧氯化锆的工艺方法 |
-
2013
- 2013-12-20 WO PCT/CN2013/090121 patent/WO2015089829A1/zh active Application Filing
-
2016
- 2016-03-29 ZA ZA2016/02080A patent/ZA201602080B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03265519A (ja) * | 1990-03-16 | 1991-11-26 | Daiso Co Ltd | オキシ塩化ジルコニウムの製造方法 |
CN101746730A (zh) * | 2009-12-16 | 2010-06-23 | 北京有色金属研究总院 | 一种碱熔分解锆英石工艺 |
CN103011278A (zh) * | 2013-01-11 | 2013-04-03 | 周涛 | 低耗碱水热制备氧氯化锆的工艺方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108059186A (zh) * | 2017-12-25 | 2018-05-22 | 山东磊宝锆业科技股份有限公司 | 以固体废锆为原料水热法制备氧化锆粉体的方法 |
WO2020124238A1 (en) * | 2018-12-19 | 2020-06-25 | Rio Tinto Iron And Titanium Canada Inc. | Process for purifying a zircon sand |
CN113753950A (zh) * | 2021-10-14 | 2021-12-07 | 云南国钛金属股份有限公司 | 一种核级氧化锆的制备方法 |
CN113753950B (zh) * | 2021-10-14 | 2023-09-26 | 云南国钛金属股份有限公司 | 一种核级氧化锆的制备方法 |
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