CN102225355A - A combined mineral processing method for recovering fine cassiterite from oxidized tin tailings - Google Patents
A combined mineral processing method for recovering fine cassiterite from oxidized tin tailings Download PDFInfo
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 64
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 13
- 239000011707 mineral Substances 0.000 title claims description 13
- 238000003672 processing method Methods 0.000 title claims description 6
- 229910001662 tin mineral Inorganic materials 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000005484 gravity Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000701 coagulant Substances 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000011780 sodium chloride Substances 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 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 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 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 14
- 239000002002 slurry Substances 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- HHSPVTKDOHQBKF-UHFFFAOYSA-J calcium;magnesium;dicarbonate Chemical compound [Mg+2].[Ca+2].[O-]C([O-])=O.[O-]C([O-])=O HHSPVTKDOHQBKF-UHFFFAOYSA-J 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910001608 iron mineral 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
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910021646 siderite Inorganic materials 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
技术领域technical field
本发明涉及一种从氧化型锡尾矿中选择性凝聚-重选方法回收微细粒级锡石的联合选矿方法，属于矿物加工或选矿技术领域。The invention relates to a combined mineral processing method for recovering fine-grained cassiterite from oxidized tin tailings by a selective coagulation-gravity separation method, and belongs to the technical field of mineral processing or mineral processing.
背景技术Background technique
随着锡资源的长期开发利用，导致锡矿资源逐渐枯竭，并在世界各地堆存着数以亿吨计的选锡尾矿，这些尾矿中还含有丰富的微细粒级的锡矿物。然而尾矿是经过选矿后存留下来的，其中的锡矿物粒度很细，无法高效回收或者回收后没有经济效益。随着微细粒级锡矿物加工技术的进步，推动了微细粒级的锡资源利用程度的提高，使锡矿石的可开采品位相应降低，入选品位接近尾矿中的锡品位。尾矿再选已被提到日程上来，如能经济有效地回收利用尾矿中的锡，不仅可以创造良好的经济效益、环境效益，也能解决很多锡企业的可持续发展问题。With the long-term development and utilization of tin resources, tin ore resources are gradually exhausted, and hundreds of millions of tons of tin tailings are piled up all over the world. These tailings also contain rich fine-grained tin minerals. However, the tailings are left after beneficiation, and the tin minerals in them have a very fine particle size, which cannot be efficiently recycled or has no economic benefits after recycling. With the advancement of fine-grained tin mineral processing technology, the utilization of fine-grained tin resources has been improved, and the mineable grade of tin ore has been reduced accordingly, and the selected grade is close to the tin grade in tailings. Tailings re-election has been put on the agenda. If the tin in the tailings can be recycled economically and effectively, it can not only create good economic and environmental benefits, but also solve the sustainable development problems of many tin enterprises.
锡石与脉石矿物存在较大的比重差异，采用重力分选是回收锡石的主要途径，无论是脉锡，还是砂锡，由于锡石比重大，用重选处理，可在低成本下就能实现锡的回收。生产实践表明，重选处理+0.074毫米以上单体解离的锡石，其选别效果是很好的。但对于锡重选后抛弃的尾矿而言，由于存在品位低、粒度细、含泥量大、成份复杂、褐铁矿和赤铁矿等含量高，致使采用传统的重选方法从尾矿中回收有价金属组份的效果很差。因此，有必要研制一种工艺流程简单、操作方便、生产可靠、指标高、成本低、投资少、见效快，并且具有较好的经济效益的联合选矿方法。There is a large difference in specific gravity between cassiterite and gangue minerals. Gravity separation is the main way to recover cassiterite. Whether it is vein tin or sand tin, due to the large specific gravity of cassiterite, gravity separation can be used at low cost. The recovery of tin can be realized. The production practice shows that the cassiterite with a monomer dissociation of more than 0.074mm is reselected, and the separation effect is very good. However, for the tailings discarded after tin gravity separation, due to the existence of low grade, fine particle size, large mud content, complex composition, high content of limonite and hematite, etc., the traditional gravity separation method is used to remove the tailings from the tailings. The effect of recovering valuable metal components is very poor. Therefore, it is necessary to develop a combined mineral processing method with simple process flow, convenient operation, reliable production, high index, low cost, low investment, quick effect, and good economic benefits.
发明内容Contents of the invention
为提高选锡尾矿中微细粒级（-37微米）锡石与铁矿物和方解石等钙镁In order to improve the fine-grained (-37 micron) cassiterite and iron minerals and calcite and other calcium and magnesium in the tin beneficiation tailings
碳酸盐脉石矿物的分离与富集的效率，本发明提供了一种从氧化型锡尾矿中选择性凝聚-重选方法回收微细粒级锡石的联合选矿方法，以有效回收贫锡尾矿中的锡，通过下列技术方案实现。The efficiency of the separation and enrichment of carbonate gangue minerals, the present invention provides a combined mineral processing method for reclaiming fine-grained cassiterite from oxidized tin tailings by selective coagulation-gravity separation method, so as to effectively recycle tin-poor The tin in the tailings is realized through the following technical solutions.
一种从氧化型锡尾矿中回收微细锡石的联合选矿方法，经过下列各步骤：A combined mineral processing method for recovering fine cassiterite from oxidized tin tailings, through the following steps:
A．按每吨含锡的尾矿中添加10～1500g的絮凝剂和/或凝聚剂进行混匀，得到矿浆物料；A． Add 10-1500g of flocculant and/or coagulant to each ton of tin-containing tailings for mixing to obtain pulp material;
B．将步骤A的矿浆物料搅拌0.5～5分钟，至形成凝聚锡矿物；B． Stir the pulp material in step A for 0.5 to 5 minutes until condensed tin minerals are formed;
C．将步骤B的凝聚锡矿物进行常规重选分离与富集，获得锡中矿和尾矿。C． The condensed tin minerals in step B are subjected to conventional gravity separation and enrichment to obtain tin middlings and tailings.
所述絮凝剂为聚丙烯酰胺、油酸、多核聚硅酸铝铁的一种或几种。The flocculant is one or more of polyacrylamide, oleic acid, and polynuclear polyaluminum iron silicate.
所述凝聚剂为氯化钠、硫化钠、氢氧化钠、硅酸钠、六偏磷酸钠的一种或几种。The coagulant is one or more of sodium chloride, sodium sulfide, sodium hydroxide, sodium silicate and sodium hexametaphosphate.
所述絮凝剂和凝聚剂为市购产品。The flocculant and coagulant are commercially available products.
本发明使用的絮凝剂和凝聚剂可以明显地强化不同粒度的锡石间的凝聚，而基本不与脉石矿物作用，且可加速凝聚过程与分选的进程，易使有价金属锡矿物与脉石的分离与富集。The flocculant and coagulant used in the present invention can significantly strengthen the coagulation between cassiterites of different particle sizes, and basically do not interact with gangue minerals, and can accelerate the process of coagulation and sorting, making it easy for the valuable metal tin minerals to Separation and enrichment of gangue.
本发明特别适合于处理锡石-氧化铁矿型、锡石-氧化铁-褐铁矿型和锡石-氧化铁-菱铁矿型、微细粒或者矿泥型尾矿，获得锡中矿和尾矿，产品锡中矿的锡品位为2～3.5%、回收率为40～65%。The present invention is particularly suitable for treating cassiterite-iron oxide ore type, cassiterite-iron oxide-limonite type and cassiterite-iron oxide-siderite type, fine grain or slime tailings, to obtain tin middlings and Tailings, the tin grade of the product tin ore is 2-3.5%, and the recovery rate is 40-65%.
与公知技术相比，本发明具有如下的优点：Compared with known technology, the present invention has following advantage:
1、本发明针对的是以微细粒、矿泥、氧化型的选锡尾矿为原料，因此，对原料的粒度要求很低；1. The present invention is aimed at using fine grains, ore slime, and oxidized tin tailings as raw materials, so the requirements for the particle size of the raw materials are very low;
2、本发明通过絮凝剂和凝聚剂处理，增强了过程的选择性凝聚与分选的效果；2. The present invention enhances the selective coagulation and sorting effect of the process through flocculant and coagulant treatment;
3、本发明采用凝聚-重选联合选矿处理技术，进行微细粒级锡矿物的分离与富集，获得锡中矿和尾矿；3. The present invention adopts coagulation-gravity separation combined beneficiation treatment technology to separate and enrich fine-grained tin minerals to obtain tin middlings and tailings;
4、本发明所采用的联合选矿工艺的流程简单，药剂成本（1～4元/吨）和总成本低，没有环境污染，而且投资少，对原料的适应性强，易于工业化实施；4. The process of the combined mineral processing technology adopted in the present invention is simple, the agent cost (1-4 yuan/ton) and the total cost are low, there is no environmental pollution, and the investment is small, the adaptability to raw materials is strong, and it is easy to implement industrially;
5、本发明可实现微细粒、矿泥型（-37微米）的锡矿物与氧化铁、钙镁碳酸盐、石英等脉石矿物的高效分离，锡的回收率高。5. The present invention can realize efficient separation of fine-grained, slime-type (-37 micron) tin minerals and gangue minerals such as iron oxide, calcium-magnesium carbonate, and quartz, and the recovery rate of tin is high.
具体实施方式Detailed ways
下面结合实施案例，对本发明做进一步的描述。The present invention will be further described below in conjunction with examples of implementation.
实施案例1Implementation Case 1
取-0.037mm粒级含量占100%（其中-5微米粒级占28.7%）、锡品位为0.156%、Fe品位10.8%、CaO含量16.6%、MgO含量11.3%、SiO2含量15.6%的尾矿。Take -0.037mm particle size content accounted for 100% (of which -5 micron particle size accounted for 28.7%), the tin grade was 0.156%, the Fe grade was 10.8%, the CaO content was 16.6%, the MgO content was 11.3%, and the SiO2 content was 15.6%. mine.
A．按每吨上述含锡的尾矿中添加500g的聚丙烯酰胺进行混匀，得到矿浆物料；A． Add 500g of polyacrylamide per ton of the above-mentioned tin-containing tailings and mix to obtain the slurry material;
B．将步骤A的矿浆物料搅拌5分钟，至形成凝聚锡矿物；B． The ore slurry material of step A was stirred for 5 minutes, to form condensed tin mineral;
C．将步骤B的凝聚锡矿物进行重选分离与富集，获得锡中矿和尾矿。C． The condensed tin minerals in step B are subjected to gravity separation and enrichment to obtain tin middlings and tailings.
获得的锡中矿品位和回收率分别为2.68%和63.60%。添加药剂后提高锡的回收率15～20个百分点。The obtained middling tin grade and recovery rate were 2.68% and 63.60%, respectively. After adding the agent, the recovery rate of tin can be increased by 15-20 percentage points.
实施案例2Implementation Case 2
取-0.037mm粒级含量占100%（其中-5微米粒级占23.7%）、锡品位为0.165%、Fe品位9.7%、CaO含量14.5%、MgO含量8.6%、SiO2含量18.7%的选锡尾矿。The -0.037mm particle size content accounts for 100% (of which -5 micron particle size accounts for 23.7%), the tin grade is 0.165%, the Fe grade is 9.7%, the CaO content is 14.5%, the MgO content is 8.6%, and the SiO2 content is 18.7%. Tin tailings.
A．按每吨上述含锡的尾矿中添加850g的油酸和氯化钠进行混匀，得到矿浆物料；A． Add 850g of oleic acid and sodium chloride per ton of the above-mentioned tin-containing tailings for mixing to obtain a slurry material;
B．将步骤A的矿浆物料搅拌4分钟，至形成凝聚锡矿物；B． The ore slurry material of step A was stirred for 4 minutes to form condensed tin minerals;
C．将步骤B的凝聚锡矿物进行重选分离与富集，获得锡中矿和尾矿。C． The condensed tin minerals in step B are subjected to gravity separation and enrichment to obtain tin middlings and tailings.
获得的锡中矿品位和回收率分别为2.98%和62.55%。添加药剂后提高锡的回收率16.2～19.5个百分点。The obtained middling tin grade and recovery rate were 2.98% and 62.55%, respectively. After adding the agent, the recovery rate of tin is increased by 16.2-19.5 percentage points.
实施案例3Implementation Case 3
取-0.037mm粒级含量占100%（其中-5微米粒级占16.8%）、锡品位为0.253%、Fe品位11.4%、CaO含量13.1%、MgO含量9.4%、SiO2含量19.2%的尾矿。Take -0.037mm particle size content accounted for 100% (of which -5 micron particle size accounted for 16.8%), the tin grade was 0.253%, the Fe grade was 11.4%, the CaO content was 13.1%, the MgO content was 9.4%, and the SiO2 content was 19.2%. mine.
A．按每吨上述含锡的尾矿中添加1500g的多核聚硅酸、硫化钠、氢氧化钠和硅酸钠进行混匀，得到矿浆物料；A． Add 1500g of polynuclear polysilicic acid, sodium sulfide, sodium hydroxide and sodium silicate to the above-mentioned tin-containing tailings per ton and mix to obtain the pulp material;
B．将步骤A的矿浆物料搅拌3分钟，至形成凝聚锡矿物；B． The ore slurry material of step A was stirred for 3 minutes, to form condensed tin mineral;
C．将步骤B的凝聚锡矿物进行重选分离与富集，获得锡中矿和尾矿。C． The condensed tin minerals in step B are subjected to gravity separation and enrichment to obtain tin middlings and tailings.
获得的锡中矿品位和回收率分别为3.36%和60.28%。添加药剂后提高锡的回收率15.3～19.8个百分点。The obtained middling tin grade and recovery rate were 3.36% and 60.28%, respectively. After adding the agent, the recovery rate of tin is increased by 15.3-19.8 percentage points.
实施案例4Implementation Case 4
取-0.037mm粒级含量占100%（其中-5微米粒级占44.7%）、锡品位为0.170%、Fe品位9.06%、CaO含量21.4%、MgO含量11.3%、SiO2含量16.3%的选锡尾矿。The -0.037mm particle size content accounts for 100% (of which -5 micron particle size accounts for 44.7%), the tin grade is 0.170%, the Fe grade is 9.06%, the CaO content is 21.4%, the MgO content is 11.3%, and the SiO content is 16.3%. Tin tailings.
A．按每吨上述含锡的尾矿中添加10g的六偏磷酸钠进行混匀，得到矿浆物料；A． Add 10g of sodium hexametaphosphate per ton of the above-mentioned tin-containing tailings and mix to obtain the slurry material;
B．将步骤A的矿浆物料搅拌0.5分钟，至形成凝聚锡矿物；B． The ore slurry material of step A was stirred for 0.5 minutes, to form condensed tin mineral;
C．将步骤B的凝聚锡矿物进行重选分离与富集，获得锡中矿和尾矿。C． The condensed tin minerals in step B are subjected to gravity separation and enrichment to obtain tin middlings and tailings.
获得的锡中矿品位和回收率分别为3.25%和55.76%。添加药剂后提高锡的回收率14.3～20.6个百分点。The obtained middling tin grade and recovery rate were 3.25% and 55.76%, respectively. The recovery rate of tin is increased by 14.3-20.6 percentage points after adding the agent.
实施案例4Implementation Case 4
取-0.037mm粒级含量占100%（其中-5微米粒级占44.7%）、锡品位为0.170%、Fe品位9.06%、CaO含量21.4%、MgO含量11.3%、SiO2含量16.3%的选锡尾矿。The -0.037mm particle size content accounts for 100% (of which -5 micron particle size accounts for 44.7%), the tin grade is 0.170%, the Fe grade is 9.06%, the CaO content is 21.4%, the MgO content is 11.3%, and the SiO content is 16.3%. Tin tailings.
A．按每吨上述含锡的尾矿中添加200g的氯化钠和氢氧化钠进行混匀，得到矿浆物料；A． Add 200g of sodium chloride and sodium hydroxide to the above-mentioned tin-containing tailings per ton for mixing to obtain a slurry material;
B．将步骤A的矿浆物料搅拌2分钟，至形成凝聚锡矿物；B． The slurry material in step A was stirred for 2 minutes until condensed tin minerals were formed;
C．将步骤B的凝聚锡矿物进行重选分离与富集，获得锡中矿和尾矿。C． The condensed tin minerals in step B are subjected to gravity separation and enrichment to obtain tin middlings and tailings.
获得的锡中矿品位和回收率分别为4.21%和53.54%。添加药剂后提高锡的回收率12.3～19.6个百分点。The obtained middling tin grade and recovery rate were 4.21% and 53.54%, respectively. The recovery rate of tin is increased by 12.3-19.6 percentage points after adding the agent.
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| CN104722395A (en) * | 2015-02-13 | 2015-06-24 | 湖北鑫鹰环保科技股份有限公司 | Mixed flocculating agent capable of accelerating settling of superfine grain tailing flocculation and application thereof |
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