CN111266195B - 一种氧化锌矿浮选组合捕收剂及其应用 - Google Patents
一种氧化锌矿浮选组合捕收剂及其应用 Download PDFInfo
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000005188 flotation Methods 0.000 title claims abstract description 31
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 18
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000012141 concentrate Substances 0.000 claims abstract description 16
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 9
- 239000000194 fatty acid Substances 0.000 claims abstract description 9
- 229930195729 fatty acid Natural products 0.000 claims abstract description 9
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 6
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 8
- NEAQRZUHTPSBBM-UHFFFAOYSA-N 2-hydroxy-3,3-dimethyl-7-nitro-4h-isoquinolin-1-one Chemical class C1=C([N+]([O-])=O)C=C2C(=O)N(O)C(C)(C)CC2=C1 NEAQRZUHTPSBBM-UHFFFAOYSA-N 0.000 claims description 6
- VDEUYMSGMPQMIK-UHFFFAOYSA-N benzhydroxamic acid Chemical compound ONC(=O)C1=CC=CC=C1 VDEUYMSGMPQMIK-UHFFFAOYSA-N 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- VLDHWMAJBNWALQ-UHFFFAOYSA-M sodium;1,3-benzothiazol-3-ide-2-thione Chemical compound [Na+].C1=CC=C2SC([S-])=NC2=C1 VLDHWMAJBNWALQ-UHFFFAOYSA-M 0.000 claims description 6
- 235000021314 Palmitic acid Nutrition 0.000 claims description 4
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 4
- IPCSVZSSVZVIGE-UHFFFAOYSA-M hexadecanoate Chemical compound CCCCCCCCCCCCCCCC([O-])=O IPCSVZSSVZVIGE-UHFFFAOYSA-M 0.000 claims description 4
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 2
- 239000005639 Lauric acid Substances 0.000 claims description 2
- 239000005642 Oleic acid Substances 0.000 claims description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- POULHZVOKOAJMA-UHFFFAOYSA-M dodecanoate Chemical compound CCCCCCCCCCCC([O-])=O POULHZVOKOAJMA-UHFFFAOYSA-M 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 2
- 229940070765 laurate Drugs 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- 229940049964 oleate Drugs 0.000 claims description 2
- HBROZNQEVUILML-UHFFFAOYSA-N salicylhydroxamic acid Chemical compound ONC(=O)C1=CC=CC=C1O HBROZNQEVUILML-UHFFFAOYSA-N 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims 2
- 239000011701 zinc Substances 0.000 abstract description 38
- 229910052725 zinc Inorganic materials 0.000 abstract description 36
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 34
- 238000000034 method Methods 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 5
- 150000007513 acids Chemical class 0.000 abstract description 2
- 235000014692 zinc oxide Nutrition 0.000 description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 235000010755 mineral Nutrition 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 2
- 229910052569 sulfide mineral Inorganic materials 0.000 description 2
- -1 zinc cations Chemical class 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 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
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- FQGMPQGXUXIOKI-UHFFFAOYSA-N [S--].[S--].[Cu++].[Zn++] Chemical compound [S--].[S--].[Cu++].[Zn++] FQGMPQGXUXIOKI-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
- 150000001412 amines Chemical class 0.000 description 1
- 229940105847 calamine Drugs 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910052864 hemimorphite Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- CPYIZQLXMGRKSW-UHFFFAOYSA-N zinc;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Zn+2] CPYIZQLXMGRKSW-UHFFFAOYSA-N 0.000 description 1
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- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular compounds
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
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- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
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- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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Abstract
本发明公开了一种氧化锌矿浮选组合捕收剂,按质量百分比计,包括如下组分:60~95wt%的脂肪酸类、0~10wt%的羟肟酸类和5~35wt%的巯基苯并噻唑。氧化锌矿浮选过程中,采用本发明组合捕收剂浮选不需要脱泥,在保证锌精矿中的锌品位的前提下,提高锌精矿的浮选回收率,降低选矿尾矿的锌品位,进而降低了锌金属损失。
Description
技术领域
本发明涉及一种氧化锌矿浮选组合捕收剂及其应用,属于矿物浮选药剂领域。
背景技术
锌金属在现代工业中用量仅次于铁、铝及铜等金属,主要用于镀锌工业、机械制造工业与电池领域,具有非常重要的作用。我国的锌矿资源相对较为丰富,目前多数矿山以开采选别硫化矿为主,仅很少的一部分矿山能够采用浸出的方法利用高品位氧化矿,而低品位氧化锌矿与氧化-硫化混合锌矿是典型的复杂难处理资源,亟需开发新的高效选矿与冶金技术。
据报道,目前处理低品位氧化锌矿的选矿工艺主要有浮选工艺、重-浮联合工艺、磁-浮联合工艺、浮选-浸出联合工艺、焙烧-浮选联合工艺等。其中浮选常采用的方法有硫化-胺法、硫化黄药法、脂肪酸法、硫醇浮选法、螯合剂浮选法等,这些方法各具特色;但是,由于低品位氧化锌往往泥化严重,锌以多种矿物形式存在,有用矿物与脉石矿物性质非常相近(如菱锌矿与方解石、白云石),矿浆难免离子组分复杂等原因,导致低品位氧化锌矿的浮选效果不佳,工业实际生产过程不稳定,多数的低品位氧化锌矿资源尚处于堆存的状态。
巯基苯并噻唑是一种通用型硫化促进剂,广泛用于各种橡胶行业,但是也有关于巯基苯并噻唑作为捕收剂的报道,CN109158214A公开了一种硫化铜锌矿的浮选分离工艺,其组合捕收剂中含有2-巯基苯并噻唑,在保持药剂的高选择性同时降低其对闪锌矿的敏感性,实现硫化铜矿物的选择性捕收,使得该药剂能获得良好选矿指标。A·M·马拉比尼等(用于评价巯基苯并噻唑药剂与铅、锌阳离子的反应活性及相关浮选结果的热力学方法国外金属矿选矿2008.11)报道了一些巯基苯并噻唑(MBT)药剂与铅锌阳离子配位络合物的条件常数的热力学计算,以便评价MBT药剂对铅锌矿的捕收作用,从计算结果得出,MBT与铅形成稳定的络合物,对铅具有选择性,而与锌形成的络合物的稳定常数值低。
发明内容
针对现有技术中存在的问题,本发明的目的是在于提供了一种氧化锌矿浮选组合捕收剂,采用该组合捕收剂浮选不需要脱泥,在保证锌精矿中的锌品位的前提下,提高锌精矿的浮选回收率,降低选矿尾矿的锌品位,进而降低了锌金属损失。
为了实现上述技术目的,本发明采用如下技术方案:
一种氧化锌矿浮选组合捕收剂,按质量百分比计,包括如下组分:
脂肪酸类 60~95wt%;
羟肟酸类 0~10wt%;
巯基苯并噻唑 5~35wt%。
优选的,所述的组合捕收剂,按质量百分比计,包括如下组分:
脂肪酸类 70~85wt%;
羟肟酸类 5~10wt%;
巯基苯并噻唑 10~20wt%。
优选的,所述的脂肪酸类为油酸、油酸盐、棕榈酸、棕榈酸盐、硬脂酸、硬脂酸盐、月桂酸、月桂酸盐、软脂酸和软脂酸盐中的至少一种。
优选的,所述的羟肟酸类为苯甲羟肟酸、水杨羟肟酸和五九羟肟酸中的至少一种。
优选的,所述的巯基苯并噻唑为2-巯基苯并噻唑和巯基苯并噻唑钠中的至少一种。
本发明还提供了上述组合捕收剂的应用,将氧化锌矿原矿磨细至-0.074mm占60%以上,然后调浆至pH为8~12,加入500~3500g/t抑制剂,调浆后再加入400~1200g/t组合捕收剂,浮选后即可得到氧化锌精矿。
本发明中的抑制剂为现有氧化锌矿选矿中常用的抑制剂,如水玻璃、六偏磷酸钠、糊精、木质素磺酸盐、柠檬酸钠、腐殖酸钠等常规抑制剂中的至少一种。
不同于现有技术中的巯基苯并噻唑可降低其对闪锌矿的敏感性,实现硫化铜矿物的选择性捕收;巯基苯并噻唑可与铅形成稳定的络合物,对铅具有选择性,而与锌形成的络合物的稳定常数值低的相关报道,发明人通过在氧化锌矿的常规捕收剂(脂肪酸类、羟肟酸类)中添加巯基苯并噻唑,并严格控制各组分配比,出人意料的发现巯基苯并噻唑能够协同提升组合捕收剂对锌的捕收性能,在保证锌精矿中的锌品位的前提下,提高锌精矿的浮选回收率,选别效果好。
本发明的组合捕收剂可以在保证锌精矿中的锌品位的前提下,提高锌精矿的浮选回收率,降低选矿尾矿的锌品位,进一步降低了锌金属损失。
具体实施方式
下面结合具体实施例对本发明作进一步详细说明,但本发明的保护范围并不限于所述内容。本发明实施例中,如无特别说明,其含量均为质量含量。
实施例1
本实施例以某氧化锌矿为对象,该矿石样品中含锌7.60%左右,锌的氧化率为70%左右,主要的脉石矿物为石英、方解石、绿泥石、云母与石膏等。采用的本发明组合捕收剂:75wt.%的油酸钠、5wt.%的苯甲羟肟酸和20wt.%的巯基苯并噻唑钠。
将原矿磨细至-0.074mm占85%,先加入碳酸钠调浆至pH为9.5左右,后加入3000g/t抑制剂(500g/t水玻璃,500g/t可溶性淀粉、1000g/t木质素磺酸盐和1000g/t磷酸盐的组合抑制剂),再加入1000g/t组合捕收剂搅拌调浆,浮选7min即得到锌精矿。其试验结果见表1。
实施例2
其它条件均与实施例1完全一致,不同之处在于组合捕收剂为80wt.%的油酸钠和20wt.%的巯基苯并噻唑钠,用量为1000g/t,其试验结果见表1。
实施例3
其它条件均与实施例1完全一致,不同之处在于组合捕收剂为80wt.%的油酸钠、10wt.%的苯甲羟肟酸和10wt.%的巯基苯并噻唑钠,用量为1000g/t,其试验结果见表1。
对比例1
其它条件均与实施例1完全一致,不同之处在于组合捕收剂为95wt.%的油酸钠和5wt.%的苯甲羟肟酸,用量为1000g/t,其试验结果见表1。
对比例2
其它条件均与实施例1完全一致,不同之处在于组合捕收剂为55wt.%的油酸钠、5wt.%的苯甲羟肟酸和40wt.%的巯基苯并噻唑钠,用量为1000g/t,其试验结果见表1。
表1低品位氧化锌矿浮选试验结果
案例 | 产品名称 | 产率(%) | Zn品位(%) | Zn回收率(%) |
实施例1 | 锌精矿 | 30.87 | 21.85 | 88.28 |
实施例2 | 锌精矿 | 35.93 | 19.05 | 88.75 |
实施例3 | 锌精矿 | 29.12 | 23.13 | 87.50 |
对比例1 | 锌精矿 | 32.65 | 20.21 | 86.84 |
对比例2 | 锌精矿 | 42.95 | 16.60 | 91.47 |
Claims (6)
1.一种氧化锌矿浮选组合捕收剂,其特征在于,按质量百分比计,包括如下组分:
脂肪酸类60~95wt%;
羟肟酸类0~10wt%;
巯基苯并噻唑5~35wt%。
2.根据权利要求1所述的一种氧化锌矿浮选组合捕收剂,其特征在于:所述的组合捕收剂,按质量百分比计,包括如下组分:
脂肪酸类70~85wt%;
羟肟酸类5~10wt%;
巯基苯并噻唑10~20wt%。
3.根据权利要求1或2所述的一种氧化锌矿浮选组合捕收剂,其特征在于:所述的脂肪酸类为油酸、油酸盐、棕榈酸、棕榈酸盐、硬脂酸、硬脂酸盐、月桂酸、月桂酸盐、软脂酸和软脂酸盐中的至少一种。
4.根据权利要求1或2所述的一种氧化锌矿浮选组合捕收剂,其特征在于:所述的羟肟酸类为苯甲羟肟酸、水杨羟肟酸和五九羟肟酸中的至少一种。
5.根据权利要求1或2所述的一种氧化锌矿浮选组合捕收剂,其特征在于:所述的巯基苯并噻唑为2-巯基苯并噻唑和巯基苯并噻唑钠中的至少一种。
6.权利要求1-5任一项所述的氧化锌矿浮选组合捕收剂的应用,其特征在于:将氧化锌矿原矿磨细至-0.074mm占60%以上,然后调浆至pH为8~12,加入500~3500g/t抑制剂,调浆后再加入400~1200g/t组合捕收剂,浮选后即可得到氧化锌精矿。
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