CN118166214A - 一种钛矿分离富集及回收氢氧化铝的方法 - Google Patents
一种钛矿分离富集及回收氢氧化铝的方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 21
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 title claims abstract description 19
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 18
- 239000010936 titanium Substances 0.000 title claims abstract description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000000706 filtrate Substances 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000002386 leaching Methods 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 4
- 230000004913 activation Effects 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- -1 silicon-aluminum-iron Chemical compound 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
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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
- C22B21/00—Obtaining aluminium
- C22B21/0015—Obtaining aluminium by wet processes
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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
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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
- C22B21/00—Obtaining aluminium
- C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
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- C—CHEMISTRY; METALLURGY
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
- C22B34/1209—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent by dry processes, e.g. with selective chlorination of iron or with formation of a titanium bearing slag
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- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
- C22B34/1213—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent by wet processes, e.g. using leaching methods or flotation techniques
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Abstract
本发明公开了一种钛矿分离富集及回收氢氧化铝的方法，包括如下步骤：S1，将锐钛矿样和氢氧化钠按照一定比例混合，并用研钵研磨5～10分钟，混匀起到机械力活化作用，确保混合均匀；S2，将混匀的试样置于坩埚内，在一定温度下用马弗炉焙烧一定时间，恒温20分钟后取出冷却；S3，冷却后，将样品研磨后置于水中搅拌浸出40分钟，固液分离后得到滤渣1和滤液1；S4，将滤渣1与一定量的盐酸反应一定时间后反复洗涤得锐钛矿精矿；S5，往滤液1中逐滴滴入盐酸，待絮状物量最大时，过滤得到氢氧化铝。
Description
技术领域
本发明属于锐钛矿石分离富集技术领域，涉及一种钛矿分离富集及回收氢氧化铝的方法。
背景技术
该型锐钛矿是在亚热带和热带气候条件下，岩石经过强烈的风化作用所形成的风化产物，具有富铝、富铁和多硅等特征，化学组成一般以Al2O3、SiO2、Fe2O3和H2O为主，矿物组成主要为锐钛矿、高岭石、赤铁矿、褐铁矿等，具有较低的硅铝铁比或硅铝比。对此类矿石的研究加工意义重大。
钛原子外层电子电离势很小，极易失去外层电子，所以易氧化，并在钛金属表面会生成致密的纳米级氧化膜，具有局部遭破坏后瞬间自我修复能力，所以钛及钛合金具有良好的抗腐蚀能力。除此之外，虽然纯钛的强度较低，但是常用的钛合金强度高，一般能达到高强度钢的水平，甚至更高强度，在航天航空、医疗、舰船等领域应用广泛。
发明内容
本发明的目标在于提供一种钛矿分离富集及回收氢氧化铝的方法，分离出矿样中的锐钛矿，回收利用氢氧化铝，确定合理的工艺流程，以提高矿石的综合利用率，提高产品附加值。
本发明是这样实现的，主要包括以下步骤：
S1，将锐钛矿样和氢氧化钠按照一定比例混合，并用研钵研磨5～10 min，混匀起到机械力活化作用，确保混合均匀；
S2，将混匀的试样置于坩埚内，在一定温度下用马弗炉焙烧一定时间，恒温20 min后取出冷却；
S3，冷却后，将样品研磨后置于水中搅拌浸出40 min，固液分离后得到滤渣1和滤液1；
S4，将滤渣1与100 ml一定浓度的盐酸反应一定时间后反复洗涤得锐钛矿精矿；
S5，往滤液1中逐滴滴入盐酸，待絮状物量最大时，过滤得到氢氧化铝。
其中：
S1中所述锐钛矿样和氢氧化钠质量比在10:5～10:8。
S2中所述混匀的试样在马弗炉焙烧温度在350℃～600℃，焙烧时间在25min～40min。
S3所述中搅拌强度300～400r·min-1。
S4所述中一定浓度的盐酸浓度是按照浓盐酸（分析纯）：水=1：1～4的体积比构成，与滤渣反应时间6min～15min。
S4所述中盐酸的作用一方面为中和残留的碱，另一方面与铁氧化物等脉石矿物反应生成可溶性盐，可通过洗涤方式。
S4所述中洗涤后的滤渣2为锐钛矿精矿石。
S5所述中絮状物量最大时为逐滴加入盐酸絮状物不减少为临界。
本发明具有浸出率高、操作简单、适应性强、可靠性的优点，不仅能回收锐钛矿，制备氢氧化铝，还能回收综合原硅酸、硅酸钠等副产品。
附图说明
图1为一种钛矿分离富集及回收氢氧化铝的方法的工艺流程图。
具体实施方式
下面结合附图及具体的实例对本发明专利进一步介绍
实施例：将红土型锐钛矿样和氢氧化钠按照10：7的比例混合，用研钵研磨10 min，在350℃温度下在马弗炉焙烧中焙烧35 min，恒温20 min后取出冷却，将冷却后的样品研磨后，置于水中搅拌浸出40 min，固液分离后得到滤渣1和滤液1，将滤渣1与100 ml一定浓度的盐酸反应一定时间后反复洗涤得锐钛矿精矿；往滤液1中逐滴滴入盐酸，待絮状物量最大时，过滤得到氢氧化铝。经过处理后锐钛矿的品位可提升2.89～3.82倍，并制得较为细粒的氢氧化铝。
当然，以上只是本发明的具体应用范例，本发明还有其他的实施方式，凡采用等同替代或等效变换形成的技术方案，均落在本发明所要求的保护范围之内。
Claims (6)
1.本发明公开了一种钛矿分离富集及回收氢氧化铝的方法，包括如下步骤：S1，将锐钛矿样和氢氧化钠按照一定比例混合，并用研钵研磨5～10 min，混匀起到机械力活化作用，确保混合均匀；S2，将混匀的试样置于坩埚内，在一定温度下用马弗炉焙烧一定时间，恒温20 min后取出冷却；S3，冷却后，将样品研磨后置于水中搅拌浸出40 min，固液分离后得到滤渣1和滤液1；S4，将滤渣1与100 ml一定浓度的盐酸反应一定时间后反复洗涤得锐钛矿精矿；S5，往滤液1中逐滴滴入盐酸，待絮状物量最大时，过滤得到氢氧化铝。
2.根据权利要求1所述一种钛矿分离富集及回收氢氧化铝的方法，其特征在于：S1中所述红土型锐钛矿样和氢氧化钠质量比在10:5～10:8。
3.根据权利要求1所述一种钛矿分离富集及回收氢氧化铝的方法，其特征在于：S2中所述混匀的试样在马弗炉焙烧温度在350 ℃～600 ℃，焙烧时间在25 min～40 min。
4.根据权利要求1所述一种钛矿分离富集及回收氢氧化铝的方法，其特征在于：S3所述中搅拌强度300～400 r·min-1。
5.根据权利要求1所述一种钛矿分离富集及回收氢氧化铝的方法，其特征在于：S4所述中一定浓度的盐酸浓度是按照浓盐酸（分析纯）：水=1:1～1:4的体积比构成，与滤渣反应时间6 min～15 min。
6.根据权利要求1所述一种钛矿分离富集及回收氢氧化铝的方法，其特征在于：S5所述中絮状物量最大时为逐滴加入盐酸絮状物不减少为临界。
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