CN101792867B - Combined flow treatment method of tin rough concentrate - Google Patents
Combined flow treatment method of tin rough concentrate Download PDFInfo
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- CN101792867B CN101792867B CN2009100951951A CN200910095195A CN101792867B CN 101792867 B CN101792867 B CN 101792867B CN 2009100951951 A CN2009100951951 A CN 2009100951951A CN 200910095195 A CN200910095195 A CN 200910095195A CN 101792867 B CN101792867 B CN 101792867B
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Abstract
The invention relates to a combined flow treatment method of tin rough concentrate, belonging to the technical field of non-ferrous metal ore-dressing and metallurgy. The process flow comprises the following steps: preparing pulp containing the tin rough concentrate; feeding the tin rough concentrate subjected to the pulp preparation into a magnetic separator for dressing magnetic minerals; making sulfide minerals float out of non magnetic ore by a floating operation; sorting by using a table concentrator to obtain qualified tin rough concentrate and a lean middling ore product; combining a magnetic mineral and lean middling ore obtained by magnetic separation; and treating a mixture by a direct current submerged arc furnace to obtain tin dioxide soot and primary iron ingot. By adopting an ore-dressing and metallurgy combined process flow, the method greatly simplifies the ore-dressing and concentrating process flow. Iron products are treated by the direct current submerged arc furnace, so that not only tin metals of the iron products can be recovered, but also the primary iron ingot can be obtained and iron metals can be recycled while improving the tin recovery rate; and the invention improves the resource utilization rate and has favorable application and popularization prospect.
Description
Technical field:
The present invention relates to a kind of combination treatment method of tin rough concentrate, belong to non-ferrous metal ore, metallurgical technology field.
Background technology:
Closely during the last ten years owing to be prone to select the tin ore resource to reduce day by day, the ore character of production is increasingly sophisticated, the ore washability worse and worse, mineral processing index descends year by year.The dressing-works is in order to ensure tin concentrate quality product and recovery index; Nearly all tin dressing-works all is adjusted into the stage of roughly selecting with mineral processing circuit and selects the tin rough concentrate of stanniferous 8～20%; Rough concentrate send into selecting system select again grade greater than 40% qualified tin concentrate and stanniferous greater than 3.5% rich chats; Qualified concentrate containing is handed over the smeltery to get into tin and is slightly refined flow process; Rich chats hands over the smeltery to adopt fuming furnace sulfiding volatilization to obtain stanniferous greater than 40% flue dust tin, and the ferrous material of output did not require to abandon (storing up) or is sold to the private enterprise and further processes owing to reaching iron extract mine producation during rough concentrate was selected.Roughly select flow process and generally adopt the sorting of sand mud, three sections of three sections (or two sections) ore grindings of placer sort, inferior concentrate is concentrated after backwashing (two sections), and the mud ore deposit adopts whizzer, belt chute or shaking table, six layers of equipment such as slime table to sort; Cleaning technological flowasheet generally adopts flotation (one thick a, essence, is scanned to secondary)-gravity treatment (shaking table two to three sections sort, two sections after backwashing of inferior concentrate)-magnetic separation flow process that (one to two subjob)-ore grinding-shaking table is scanned, could the output stanniferous qualified concentrate containing and stanniferous more than 40% greater than mineral products in 3.5% the richness.
Adopt this beneficiation flowsheet ore through roughly select, rough concentrate is selected, smelt, tin has obtained effective recovery, and iron rule is failed effective recycling, it is big that ferrous material is stored up floor space, and environment is exerted a certain influence; And dressing process long flow path, complicacy, production cost is high, and floating, magnetic, mostly heavy work is to be interrupted operation causes metal loss big, and flow process is difficult to control, and labor intensity of operating staff is big.
Summary of the invention:
The purpose of this invention is to provide a kind of ore dressing of tin rough concentrate---metallurgical combined flow path processing method; Can obtain qualified tin concentrate product; Also can obtain elementary ingot iron product simultaneously; It is simple to have technology, and flow process is short, production cost is low, environmental friendliness, iron obtain efficient recovery, effectively utilize the wide advantage of limited resources, application and promotion prospect, and this programme not only can be applied to tin raw ore treatment scheme; Also can be applied to tin and store up the development and use of mine tailing (iron content is high, and iron, tin disseminated grain size are close).
Solving technical problem of the present invention accomplishes according to the following steps: will contain tin rough concentrate and make and send into magnetic separator behind the slurry and select magnetic mineral; Sort with shaking table again behind the non magnetic ore process flotation operation emersion sulfide mineral and obtain high-grade tin concentrate and the poor middle mineral products of tin; The magnetic mineral (iron product) that magnetic separation obtains merges with the DC-ore-heating furnace processing with the poor chats of shaking table output, obtains tindioxide flue dust and elementary ingot iron.
Concrete processing condition of the present invention are following:
Described tin rough concentrate is that ore sorts for three sections through broken, three sections (or two sections) ore grindings, and inferior concentrate is concentrated the product of after backwashing output, its stanniferous 8%～20%, sulfur-bearing 3%～10%, iron content 40%～50%.
Magnetic dressing process is one thick a, essence, sweep (the rough concentrate grade of looking processing can increase once essence and scan operation); Magnetic plant is the upright ring of a Slon Wet-type strong magnetic separator; Magneticstrength is controlled at 2500～4500 oersteds; The ore pulp concentration expressed in percentage by weight of making slurry during magnetic separation is controlled at 20%～30%, and rough concentrate granularity-200 order accounts for 40～60%.The concentrate merging of scanning is roughly selected concentrate and is got into selected operation, and selected magnetic product becomes iron product, and its ferrous grade 55～62%, stanniferous are 2～3%.The non-magnetic product of scanning (stanniferous 15～25%) gets into flotation sulphur removal operation.
Non-magnetic product is controlled at 40%～50% through concentrating with the ore pulp concentration expressed in percentage by weight, sends into agitation vat, adds copper sulfate 300～600g/t, xanthate 80～150g/t, pine tar 30～50g/t, after fully stirring, sends into flotation machine and sorts.Froth product is the sulphur concentrate, and product entering shaking table sorts in the groove of flotation.But flotation operation also can be one and slightly sweeps according to material sulfur-bearing grade one roughing.
Product get into to divide bucket buffering, the classification of classification case to feed shaking table again to carry out two sections and sort in the groove of flotation, and the control shaking table is given ore deposit ore pulp concentration expressed in percentage by weight 20～25%, and mine-supplying quantity is controlled to be with the bed type and handles 70～80% of raw ore.Two sections of shaking tables sort the output grade greater than 40% the qualified concentrate containing and the poor chats of grade 2～3%, are respectively 80～85%, 12～15% with respect to the tin recovery of rough concentrate.
The poor chats of the iron product of magnetic separation output and shaking table output merges interpolation after drying: reductive agent, vulcanizing agent, flux mixing, and send into DC-ore-heating furnace and handle.Control certain atmosphere, first sulfiding volatilization tin, back reduced iron.The reductive agent that uses is fineness 60 purpose coking coal powders, and coking coal powder is allocated in 10～20% ratio; Temperature is controlled at 1000～1350 ℃, obtain stanniferous greater than 40% tindioxide flue dust, iron content greater than 98% elementary ingot iron, the operation tin recovery is greater than 90%, the operation iron recovery is greater than 95%.
The invention has the beneficial effects as follows: adopt choosing, the smelting United Technologies of magnetic separation of the present invention, flotation, gravity treatment, DC-ore-heating furnace to form comparatively advanced joint process processing tin rough concentrate; Conventional rough concentrate cleaning technological flowasheet is simple, flow process short, easy operation control; Improve the recovery index of tin, reclaimed iron product simultaneously.Conventional treatment process drops to minimum in order to ensure the loss of tin in the ferrous material; Usually take the measure that multiple beneficiation method is united and multistage sorts; Cause flowage structure complicacy, long flow path, to control difficulty big, production cost is high, and ferrous material does not obtain recycling; It is big that it stores up floor space, brings bigger environmental protection pressure to enterprise; On the other hand, in order to reduce the loss of tin in ferrous material, improve the recovery of tin, the grade of tin concentrate product receives certain influence.And employing the present invention owing to carry the tin that gets into magnetic product during magnetic separation secretly, can obtain reclaiming after DC-ore-heating furnace is handled, thereby can iron mineral be selected through the red-tape operati condition during magnetic separation as far as possible, thereby has created favourable condition for follow-up sorting operation; Tin rough concentrate has improved the tin grade through after the magnetic separation, flotation, has significantly reduced the content of iron-bearing mineral and sulfide, sorts through shaking table and can obtain the stanniferous grade greater than 40% the qualified tin concentrate and the poor chats of stanniferous 2～3%; The poor chats merging of the iron product of magnetic separation output and shaking table output is vulcanized through DC-ore-heating furnace---restore job; Tin wherein further obtains recycling; This dressing and smelting united tin recovery improves 4～5 percentage points than traditional process; The recovery of iron can reach 80～90% (being distributed in qualified concentrate containing and the sulfide because of 10～20% iron is arranged), and traditional process does not obtain reclaiming for the tin in the magnetic concentrate (iron material), and iron also fails to reclaim; The rich chats of tin is gone into fuming furnace, and iron does not wherein obtain reclaiming yet.Thereby the present invention had both simplified cleaning technological flowasheet, had improved the recovery of tin again, had also reclaimed iron simultaneously, effectively raised resource utilization, had bigger application and promotional value.The present invention also has application promise in clinical practice to the recycling of tailing resource.
Description of drawings
Fig. 1 is a principle process flow sheet of the present invention.
Embodiment
Embodiment 1:
The tin rough concentrate chemical ingredients, Sn9.81%, Fe49.03%, S3.56%, As0.74%, SiO
21.40%, Al
2O
311.52%, CaO2.66%, MgO0.828%.Rough concentrate-200 order productive rate 46.61%, tin rate 65.33%.The iron chemical phase analysis, red (brown) iron ore accounts for 88.45%, and magnetite, pyrrhotite, pyrite account for 11.55%.Monomer cassiterite dissociation yield is 83.61%.Mineral are main with metalliferous mineral, account for 96.95% of mineral total amount, and are main with rhombohedral iron ore in the metalliferous mineral, account for 49.23% of mineral total amount; Limonite and cassiterite take second place, and account for 23.17% and 12.35% of mineral total amount respectively.Gangue mineral only accounts for 3.05% of mineral total amount.
Processing condition and result: tin rough concentrate size mixing to concentration expressed in percentage by weight be 25%; Adopt the upright ring of Slon-500 type intensity magnetic separator to sort; Regulating magneticstrength is 3000～3500 oersteds (roughly selecting, scan 3500 oersteds, selected 3000 oersteds), through one roughing, once purging selection; Primary cleaning, the iron ore concentrate of output productive rate 32.5%, iron grade 57.2%, tin grade 2.3%.The selected merging with the mine tailing of scanning (non-magnetic product) feeds subaeration flotation machine through being concentrated into concentration expressed in percentage by weight 45%; Roughly select and add copper sulfate 150g/t, xanthate 50g/t, pine tar 30g/t; Scan and add copper sulfate 120g/t, xanthate 30g/t, pine tar 20g/t; The sulfide product of emersion productive rate 6%, flotation tailings stanniferous 23.21%.Flotation tailings adjusting concentration to 20% feeds shaking table and sorts; Sort through two sections shaking tables; The qualified tin concentrate of output and poor in mineral products, qualified tin concentrate stanniferous 41.5%, the tin recovery 81.62%, poor chats stanniferous 2.26%, iron content 49.6%, the tin recovery 12.16%, iron recovery 49.1%.Iron product (magnetic concentrate) feeds DC-ore-heating furnace with the poor chats merging of shaking table output; Go into 12% coking coal powder by the ore deposit reprovision; 1100～1200 ℃ of control maturing temperatures, roasting time 1.5h, the tindioxide flue dust that gathers dust and obtain stanniferous 41%; The elementary ingot iron of molten iron casting output iron content 98.5%, the operation recovery of iron reaches 96.5%.The recovery of tin is 16.63% with respect to tin rough concentrate in the flue dust tin.
Embodiment 2:
The tin rough concentrate chemical ingredients, Sn11.57%, Fe48.10%, S4.18%, As0.63%, SiO
21.42%, Al
2O
32.50%, CaO1.26%, MgO0.50%.Rough concentrate-200 order productive rate 51.99%, tin rate 69.65%.The iron chemical phase analysis, red (brown) iron ore accounts for 85.50%, and magnetite, pyrrhotite, pyrite account for 14.50%.Monomer cassiterite dissociation yield is 85.68%.Mineral are main with metalliferous mineral, account for 97.92% of mineral total amount, and are main with rhombohedral iron ore in the metalliferous mineral, account for 47.36% of mineral total amount; Limonite and cassiterite take second place, and account for 25.23% and 14.31% of mineral total amount respectively.Gangue mineral only accounts for 2.85% of mineral total amount.
Processing condition and result: tin rough concentrate size mixing to concentration expressed in percentage by weight be 25%; Adopt the upright ring of Slon-500 type intensity magnetic separator to sort; Regulating magneticstrength is 3000～3500 oersteds (roughly selecting, scan 3500 oersteds, selected 3000 oersteds), through one roughing, once purging selection; Primary cleaning, the iron ore concentrate of output productive rate 34.33%, iron grade 58.36%, tin grade 2.23%.The selected merging with the mine tailing of scanning (non-magnetic product) feeds subaeration flotation machine through being concentrated into concentration expressed in percentage by weight 45%; Roughly select and add copper sulfate 150g/t, xanthate 50g/t, pine tar 30g/t; Scan and add copper sulfate 120g/t, xanthate 30g/t, pine tar 20g/t; The sulfide product of emersion productive rate 7.2%, flotation tailings stanniferous 24.2%.Flotation tailings adjusting concentration to 20% feeds shaking table and sorts; Sort through two sections shaking tables; The qualified tin concentrate of output and poor in mineral products, qualified tin concentrate stanniferous 41.56%, the tin recovery 82.63%, poor chats stanniferous 2.40%, iron content 49.3%, the tin recovery 11.8%, iron recovery 48.9%.Iron product (magnetic concentrate) feeds DC-ore-heating furnace; Go into 12% coking coal powder by the ore deposit reprovision; 1100～1200 ℃ of control maturing temperatures, roasting time 1.5h, the tindioxide flue dust that gathers dust and obtain stanniferous 40.5%; The elementary ingot iron of molten iron casting output iron content 98.8%, the operation recovery of iron reaches 95.6%.。The recovery of tin is 15.69% with respect to tin rough concentrate in the flue dust tin.
Embodiment 3:
The tin rough concentrate chemical ingredients, Sn12.60%, Fe47.52%, S3.84%, As0.65%, SiO
21.023%, Al
2O
34.88%, CaO2.56%, MgO0.756%.Rough concentrate-200 order productive rate 47.82%, tin rate 68.13%.The iron chemical phase analysis, red (brown) iron ore accounts for 90.05%, and magnetite, pyrrhotite, pyrite account for 9.95%.Monomer cassiterite dissociation yield is 85.33%.Mineral are main with metalliferous mineral, account for 97.26% of mineral total amount, and are main with rhombohedral iron ore in the metalliferous mineral, account for 46.53% of mineral total amount; Limonite and cassiterite take second place, and account for 24.12% and 13.31% of mineral total amount respectively.Gangue mineral only accounts for 2.75% of mineral total amount.
Processing condition and result: tin rough concentrate size mixing to concentration expressed in percentage by weight be 25%; Adopt the upright ring of Slon-500 type intensity magnetic separator to sort; Regulating magneticstrength is 3000～3500 oersteds (roughly selecting, scan 3500 oersteds, selected 3000 oersteds), through one roughing, once purging selection; Primary cleaning, the iron ore concentrate of output productive rate 33.34%, iron grade 58.10%, tin grade 2.29%.The selected merging with the mine tailing of scanning (non-magnetic product) feeds subaeration flotation machine through being concentrated into concentration expressed in percentage by weight 45%; Roughly select and add copper sulfate 150g/t, xanthate 50g/t, pine tar 30g/t; Scan and add copper sulfate 120g/t, xanthate 30g/t, pine tar 20g/t; The sulfide product of emersion productive rate 4.03%, flotation tailings stanniferous 23.66%.Flotation tailings is regulated concentration to 20% and is fed shaking table and sort, sort through two sections shaking tables, the qualified tin concentrate of output and poor in mineral products, qualified tin concentrate stanniferous 40.79%, the tin recovery 83.14%, poor chats stanniferous 2.49%, the tin recovery 11.47%.Iron product (magnetic concentrate) feeds DC-ore-heating furnace with the poor chats merging of shaking table output; Go into 12% coking coal powder by the ore deposit reprovision; 1100～1200 ℃ of control maturing temperatures, roasting time 1.5h, the tindioxide flue dust that gathers dust and obtain stanniferous 41.3%; The elementary ingot iron of molten iron casting output iron content 99.0%, the operation recovery of iron reaches 97.0%.The recovery of tin is 15.22% with respect to tin rough concentrate in the flue dust tin.
Claims (3)
1. the combined flow path processing method of a tin rough concentrate; It is characterized in that accomplishing according to the following steps: will contain tin rough concentrate and make and send into magnetic separator behind the slurry and select magnetic mineral; Sort with shaking table behind the non magnetic ore process flotation operation emersion sulfide mineral again and obtain qualified tin concentrate and poor middle mineral products, magnetic mineral that magnetic separation obtains and the merging of poor chats obtain tindioxide flue dust and elementary ingot iron with the DC-ore-heating furnace processing; The described tin rough concentrate grade that contains is 8%～20%, crosses 200 purpose granularities and accounts for 40～60%, and the ore pulp concentration expressed in percentage by weight of making slurry is controlled at 20%～30%; Directly get into magnetic concentration working, magnetic concentration working adopts wet magnetic separator, and magneticstrength is controlled at 2500～4500 oersteds; Magnetic dressing process comprise roughly select, selected and scan; Magnetic mineral is selected, magnetic mineral iron content 55%～62%, stanniferous is 2～3%; Non-magnetic product after the magnetic separation makes the ore pulp concentration expressed in percentage by weight be controlled at 40%～50% through concentrating, and sends into flotation machine, adds copper sulfate 300～600g/t, xanthate 80～150g/t, pine tar 30～50g/t, emersion sulfide.
2. the combined flow path processing method of tin rough concentrate according to claim 1; It is characterized in that: flotation tailings is sent into shaking table and is carried out two sections and sort; The control shaking table is given ore deposit ore pulp concentration expressed in percentage by weight 20～25%, and the output stanniferous is greater than 40% the qualified tin concentrate and the poor middle mineral products of stanniferous 2～3%.
3. the combined flow path processing method of tin rough concentrate according to claim 1; It is characterized in that: when DC-ore-heating furnace is handled; Elder generation's sulfiding volatilization tin, back reduced iron, the reductive agent that uses is fineness 60 purpose coking coal powders; Coking coal powder is allocated in 10%～20% ratio, and the tindioxide flue dust stanniferous of acquisition is greater than 40%.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773150A (en) * | 2011-05-12 | 2012-11-14 | 云南锡业集团（控股）有限责任公司 | Polymetallic (iron, tin and zinc) ore comprehensive recovery beneficiation method |
| CN102225357A (en) * | 2011-05-27 | 2011-10-26 | 云南锡业集团（控股）有限责任公司 | Branch gravity concentration method for recovering accompanying tin from semi-finished product of magnetic concentrated iron of iron-tin ore |
| CN102284353A (en) * | 2011-08-15 | 2011-12-21 | 大余县东宏锡制品有限公司 | Method for recovering tungsten-tin metal from ethylene-propylene terpolymerisate (APT) wastes |
| CN103551245B (en) * | 2013-11-25 | 2015-09-30 | 长沙有色冶金设计研究院有限公司 | Complex multi-metal micro fine particle sulphide ore is carried out to the beneficiation method of synthetical recovery |
| CN104689901B (en) * | 2013-12-06 | 2017-05-10 | 沈阳有色金属研究院 | Comprehensive recovery beneficiation method of tungsten/tin/zinc polymetallic ores |
| CN103816989B (en) * | 2014-02-18 | 2016-08-17 | 云南锡业集团有限责任公司研究设计院 | A kind of Tin concentrate arsenic removal, the ore-dressing technique of sulfur |
| CN104195352A (en) * | 2014-08-20 | 2014-12-10 | 来宾华锡冶炼有限公司 | Method for recovering tin metal from tin-containing waste bricks |
| CN105327771B (en) * | 2015-12-04 | 2017-06-23 | 云南锡业股份有限公司卡房分公司 | A kind of fine grinding and comprehensive reutilization ore-dressing technique method containing copper sulfide concentrate |
| CN106622639B (en) * | 2016-12-23 | 2018-08-24 | 云南锡业股份有限公司卡房分公司 | A kind of selected ore-dressing technique of tin sulphide ore rough concentrate |
| CN107051712A (en) * | 2017-04-13 | 2017-08-18 | 昆明冶金研究院 | A kind of beneficiation method of the recovery valuable metal of stanniferous magnetic iron ore |
| CN111940126B (en) * | 2020-08-18 | 2022-02-25 | 昆明理工大学 | Heavy magnetic suspension combined recovery method for low-grade tin-containing tailings |
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Application publication date: 20100804 Assignee: Yunnan tin Chenzhou Mining & Metallurgy Co., Ltd. Assignor: Yunnan Tin Group (Holding) Co., Ltd Contract record no.: 2014530000080 Denomination of invention: Combined flow treatment method of tin rough concentrate Granted publication date: 20120718 License type: Exclusive License Record date: 20140617 |
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