CN103710538A - Preparation method of zinc smelting slag composite briquette - Google Patents
Preparation method of zinc smelting slag composite briquette Download PDFInfo
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- CN103710538A CN103710538A CN201310696963.5A CN201310696963A CN103710538A CN 103710538 A CN103710538 A CN 103710538A CN 201310696963 A CN201310696963 A CN 201310696963A CN 103710538 A CN103710538 A CN 103710538A
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- Prior art keywords
- slag
- blast furnace
- zinc
- colored
- powder
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- 239000002893 slag Substances 0.000 title claims abstract description 82
- 239000011701 zinc Substances 0.000 title claims abstract description 49
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 32
- 238000003723 Smelting Methods 0.000 title claims abstract description 19
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004484 Briquette Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000000498 ball milling Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 24
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 21
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 18
- 229910052745 lead Inorganic materials 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 14
- 238000009854 hydrometallurgy Methods 0.000 claims description 7
- 239000003469 silicate cement Substances 0.000 claims description 7
- 238000009853 pyrometallurgy Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 8
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- LCPUDZUWZDSKMX-UHFFFAOYSA-K azane;hydrogen sulfate;iron(3+);sulfate;dodecahydrate Chemical compound [NH4+].O.O.O.O.O.O.O.O.O.O.O.O.[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O LCPUDZUWZDSKMX-UHFFFAOYSA-K 0.000 abstract 3
- LWUVWAREOOAHDW-UHFFFAOYSA-N lead silver Chemical compound [Ag].[Pb] LWUVWAREOOAHDW-UHFFFAOYSA-N 0.000 abstract 3
- 239000011398 Portland cement Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000011133 lead Substances 0.000 description 19
- 239000007787 solid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 238000009858 zinc metallurgy Methods 0.000 description 3
- 238000007499 fusion processing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 229910052935 jarosite Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a preparation method of a zinc smelting slag composite briquette, belonging to the technical fields of metallurgy and chemical industry. The method comprises the following steps: (1) ball milling: respectively carrying out ball milling on lead silver slag, iron alum slag and blast furnace slag to obtain three powders in which the content of particles with the size of less than 200 meshes is greater than or equal to 80%; (2) proportioning: mixing the iron alum slag powder, lead silver slag powder and blast furnace slag powder in a mass ratio of (1.5-3):(0.8-2):1, and mixing Portland cement accounting for 0.5-8 wt% of the total material while adding water until the water content of the mixture is 12-20; and (3) carrying out briquetting on the mixture with a hydroforming machine under the forming pressure of 20-80Mpa to produce a wet briquette, and drying in a drying kiln at 30-180 DEG C to produce the qualified briquette of which the water content is 5-10%. The method can enable the iron alum slag, lead silver slag and blast furnace slag to quickly form, and has the characteristics of simple technique, low reagent consumption, low cost and high formation rate.
Description
Technical field
The invention belongs to chemical industry metallurgical technical field, especially relate to a kind of preparation method of zinc smelting dreg composite briquettes.
Background technology
Zinc smelting technology is mainly divided into pyrometallurgy of zinc and the large class of zinc hydrometallurgy two, and current prevailing zinc metallurgy method is zinc hydrometallurgy, and zinc hydrometallurgy accounts for the more than 80% of zinc output.In zinc hydrometallurgy, high temperature peracid extract technology is a kind of conventional zinc metallurgy method, the feature of the method is that neutral leaching residue adopts hot acid to leach, zinc and dissolved ferric iron enter in leach liquor, and the element of the indissolubles such as lead, silver, copper is not leached, and form and leach finishing slag-plumbous silver-colored slag; In order to remove the iron in leach liquor, conventionally adopt jarosite process deironing simultaneously, form the removal that jarosite crystal is realized iron, iron removal output iron vitriol slag.Pyrometallurgy of zinc is to adopt carbonaceous reducing agent reduction to obtain the process of metallic zinc, and wherein closed blast furnace zinc metallurgy is a kind of important pyrometallurgy of zinc method, and the method is smelted output blast furnace slag in zinc process.When conventional art adopts method for smelting reduction of Ni to process the silver-colored slag of above-mentioned lead, iron vitriol slag and blast furnace slag, carry out respectively, as Chinese patent " is a kind ofly simply suppressed above-mentioned slag charge through brick pressing machine with drum; pack into and add trolley, directly add and carry out retailoring in reducing and smelting furnace and obtain lead matte and rich indium oxide powder and zinc after seasoning.The shortcoming of this technological process is that zinc smelting dreg agglomerate dropping strength is less than 70% lower than 2 (height of fall 1m), ratio of briquetting, powder is many, cause fusion process permeability of stock column poor, heavy metal powder is flown upward, whole operating environment is poor, fusion process dust rate is large, and cause in reducing and smelting furnace each several part be heated inhomogeneous, fuel quantity consumption is large.Therefore the zinc smelting dreg composite briquettes that, how to prepare high strength, high ratio of briquetting has become the technical difficult points of zinc smelting dreg tradition retailoring.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of zinc smelting dreg composite briquettes, and its technique is simple, cost is low, reagent consumption is little, agglomerate intensity is high, ratio of briquetting is high.
Solving the scheme that technical problem of the present invention adopts is:
1. ball milling: by the silver-colored slag of lead, iron vitriol slag and blast furnace slag broken ball milling respectively, obtaining granularity was 200 orders >=80% 3 kind of powder;
2. batching: by above-mentioned iron vitriol slag powder, plumbous silver-colored ground-slag material and blast furnace slag powder in mass ratio 1.5～3:0.8～2:1 prepare burden, allocate the silicate cement that material is always expected quality 0.5～8% into, in mixing process, mend and add water to compound moisture 12～20%;
3. described compound being adopted to hydraulic forming machine is the wet agglomerate of the group's of pressure output under 20～80Mpa condition in forming pressure, in drying kiln, at 30 ℃～180 ℃ temperature, dries the qualified agglomerate of output moisture 5～10%.
Above-mentioned step 2. in, the time that is uniformly mixed of material is 5～15min; The molded cycle of step mixed liquor is 3. 20～40s, and drying time is 2～24h, qualified dropping strength after oven dry should be greater than 3 times/highly for 1m.
Described iron vitriol slag and plumbous silver-colored slag are Zinc hydrometallurgy process output, and iron vitriol slag is containing Zn 3～7%, and Pb 1～5%, Fe
2o
327～35%, SiO
27～13.5%, CaO 2～5%; Plumbous silver-colored slag is containing Zn 5～9%, and Pb 4～13%, Fe
2o
314～22%, SiO
28～14%, CaO 2～7%; Blast furnace slag is pyrometallurgy of zinc technique output, and blast furnace slag is containing Zn 2～11%, and Pb 1～3%, Fe
2o
335～45%, SiO
213～18%, CaO 10～16%.
The technology used in the present invention principle is as follows:
In the iron vitriol slag of zinc hydrometallurgy output and plumbous silver-colored slag, contain the stronger materials of cohesiveness such as a certain amount of colloidal iron hydroxide and silicic acid.In pelletizing preparation process, ironic hydroxide and silicic acid isocolloid material play and disperse and ligation between solid particulate, form solid bonded bridge, strengthen the interaction between solid particulate, obtain high-intensity agglomerate.The silicate cement simultaneously adding is fixed gradually in agglomerate drying process, and solid particulate is further bondd, and forms high-intensity qualified agglomerate.
The invention has the beneficial effects as follows:
The present invention takes full advantage of and in plumbous silver-colored slag and iron vitriol slag, contains the materials such as the cohesiveness such as ironic hydroxide, silicic acid are stronger and realize bonding between solid particulate, by adding a small amount of silicate cement, further strengthen the mutual bonding of solid particulate in agglomerate drying process simultaneously, thereby obtain high-intensity zinc smelting dreg agglomerate.Technical process of the present invention is simple, and agglomerate intensity is high, and ratio of briquetting is high, and powder is few, obviously improves ventilation property and the operating environment of retailoring process stock column.
Specific embodiment
embodiment 1.take from the iron vitriol slag of certain factory, plumbous silver-colored slag and blast furnace slag, its Chemical Composition is respectively: iron vitriol slag: Zn 6.8%, and Pb 3.0%, Fe
2o
327.0%, SiO
28.1%, CaO 2.2%; Plumbous silver-colored slag: Zn 5.0%, Pb 4.5%, Fe
2o
321.9%, SiO
29.5%, CaO 2.0%; Blast furnace slag: Zn 8.9%, Pb 1.0%, Fe
2o
335.2%, SiO
216.6%, CaO 12.4%; By iron vitriol slag, plumbous silver-colored slag and blast furnace slag respectively broken sieve ball milling obtain-200 orders and account for three kinds of powders of 80%.Get 15kg iron vitriol slag powder, the plumbous silver-colored ground-slag material of 8kg and 10kg blast furnace slag powder, allocate 0.5kg silicate cement into, adopt mixer batch mixing 5min, batch mixing process is supplemented 1.5kg water, and after moisturizing mixes, mixture moisture content is 12%.Adopt hydraulic forming machine briquetting, forming pressure is 20Mpa, and shaping cycle is 20s, and the wet agglomerate of briquetting output is dried 24 hours at 30 ℃.The chemical composition of the zinc smelting dreg composite briquettes obtaining is Zn 6.5%, and Pb 3.0%, Fe
2o
326.6%, SiO
211.1%, CaO 5.1%, water content 10%.
The index obtaining: dropping strength 5 times (height of fall is 1m), ratio of briquetting 95%.
embodiment 2.take from the iron vitriol slag of certain factory, plumbous silver-colored slag and blast furnace slag, its Chemical Composition is respectively: iron vitriol slag: Zn 3.0%, and Pb 1.1%, Fe
2o
331.7%, SiO
213.2%, CaO 3.5%; Plumbous silver-colored slag: Zn 7.3%, Pb 10.9%, Fe
2o
314.1%, SiO
213.0%, CaO 3.6%; Blast furnace slag: Zn 11.0%, Pb 2.1%, Fe
2o
340.7%, SiO
218.0%, CaO 10.3%; By iron vitriol slag, plumbous silver-colored slag and blast furnace slag respectively broken sieve ball milling obtain-200 orders and account for three kinds of powders of 80%.Get 20kg iron vitriol slag powder, the plumbous silver-colored ground-slag material of 12kg and 10kg blast furnace slag powder, allocate 1.26kg silicate cement (account for material total amount 3%) into, adopt mixer batch mixing 10min, batch mixing process is supplemented 2.75kg water, and after moisturizing mixes, mixture moisture content is 16%.Adopt hydraulic forming machine briquetting, forming pressure is 50Mpa, and shaping cycle is 30s, and the wet agglomerate of briquetting output is dried 12 hours at 100 ℃.The chemical composition of the zinc smelting dreg composite briquettes obtaining is Zn 5.3%, and Pb 4.2%, Fe
2o
319.2%, SiO
210.6%, CaO 4.0%, water content 5%.
The index obtaining: dropping strength 7 times (height of fall is 1m), ratio of briquetting 96.5%.
embodiment 3.take from the iron vitriol slag of certain factory, plumbous silver-colored slag and blast furnace slag, its Chemical Composition is respectively: iron vitriol slag: Zn 3.2%, and Pb 4.9%, Fe
2o
335.0%, SiO
29.2%, CaO4.8%; Plumbous silver-colored slag: Zn 9.0%, Pb 12.9%, Fe
2o
316.5%, SiO
214.0%, CaO 6.8%; Blast furnace slag: Zn2.0%, Pb 3.0%, Fe
2o
345.0%, SiO
217.5%, CaO 16.0%; By iron vitriol slag, plumbous silver-colored slag and blast furnace slag respectively broken sieve ball milling obtain-200 orders and account for three kinds of powders of 80%.Get 30kg iron vitriol slag powder, the plumbous silver-colored ground-slag material of 15kg and 10kg blast furnace slag powder, allocate 4.4kg silicate cement (account for material total amount 8%) into, adopt mixer batch mixing 15min, batch mixing process is supplemented 6.53kg water, and after moisturizing mixes, mixture moisture content is 20%.Adopt hydraulic forming machine briquetting, forming pressure is 80Mpa, and shaping cycle is 40s, and the wet agglomerate of briquetting output is dried 2 hours at 200 ℃.The chemical composition of the zinc smelting dreg composite briquettes obtaining is Zn 3.2%, and Pb 4.7%, Fe
2o
317.5%, SiO
28.2%, CaO 5.3%, water content 8%.
The index obtaining: dropping strength 10 times (height of fall is 1m), ratio of briquetting 98%.
Claims (3)
1. a preparation method for zinc smelting dreg composite briquettes, is characterized in that:
1. ball milling: by the silver-colored slag of lead, iron vitriol slag and blast furnace slag broken ball milling respectively, obtaining granularity was 200 orders >=80% 3 kind of powder;
2. batching: by above-mentioned iron vitriol slag powder, plumbous silver-colored ground-slag material and blast furnace slag powder in mass ratio 1.5～3:0.8～2:1 prepare burden, allocate the silicate cement that material is always expected quality 0.5～8% into, in mixing process, mend and add water to compound moisture 12～20%;
3. described compound being adopted to hydraulic forming machine is the wet agglomerate of the group's of pressure output under 20～80Mpa condition in forming pressure, in drying kiln, at 30 ℃～180 ℃ temperature, dries the qualified agglomerate of output moisture 5～10%.
2. the preparation method of zinc smelting dreg composite briquettes according to claim 1, is characterized in that: step 2. in, the time that is uniformly mixed of material is 5～15min; The molded cycle of step mixed liquor is 3. 20～40s, and drying time is 2～24h, qualified dropping strength after oven dry should be greater than 3 times/highly for 1m.
3. the preparation method of zinc smelting dreg composite briquettes according to claim 1, is characterized in that: described iron vitriol slag and plumbous silver-colored slag are Zinc hydrometallurgy process output, and iron vitriol slag is containing Zn 3～7%, and Pb 1～5%, Fe
2o
327～35%, SiO
27～13.5%, CaO 2～5%; Plumbous silver-colored slag is containing Zn 5～9%, and Pb 4～13%, Fe
2o
314～22%, SiO
28～14%, CaO 2～7%; Blast furnace slag is pyrometallurgy of zinc technique output, and blast furnace slag is containing Zn 2～11%, and Pb 1～3%, Fe
2o
335～45%, SiO
213～18%, CaO 10～16%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696963.5A CN103710538B (en) | 2013-12-18 | 2013-12-18 | A kind of preparation method of zinc smelting dreg composite briquettes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310696963.5A CN103710538B (en) | 2013-12-18 | 2013-12-18 | A kind of preparation method of zinc smelting dreg composite briquettes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103710538A true CN103710538A (en) | 2014-04-09 |
| CN103710538B CN103710538B (en) | 2016-01-20 |
Family
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|---|---|---|---|
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| CN (1) | CN103710538B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751878A (en) * | 2018-08-22 | 2018-11-06 | 中国有色桂林矿产地质研究院有限公司 | A kind of curing agent and curing process of zinc abstraction waste residue |
| CN109811141A (en) * | 2019-02-28 | 2019-05-28 | 西安建筑科技大学 | A kind of refining lead skim enters furnace pellet and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643840A (en) * | 2009-09-02 | 2010-02-10 | 中南大学 | Complex manganese ore powder pelletization process |
| CN102242254A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | High sulfide pyrite pellet reinforced roasting consolidation technology |
| CN102912147A (en) * | 2012-11-15 | 2013-02-06 | 昆明冶金研究院 | Process for recycling lead zinc, silver and iron from tailings after carrying out sulphur flotation on zinc oxygen pressure leaching slag |
-
2013
- 2013-12-18 CN CN201310696963.5A patent/CN103710538B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643840A (en) * | 2009-09-02 | 2010-02-10 | 中南大学 | Complex manganese ore powder pelletization process |
| CN102242254A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | High sulfide pyrite pellet reinforced roasting consolidation technology |
| CN102912147A (en) * | 2012-11-15 | 2013-02-06 | 昆明冶金研究院 | Process for recycling lead zinc, silver and iron from tailings after carrying out sulphur flotation on zinc oxygen pressure leaching slag |
Non-Patent Citations (1)
| Title |
|---|
| 张建良等: "钒钛磁铁矿金属化球团固结机理研究", 《烧结球团》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751878A (en) * | 2018-08-22 | 2018-11-06 | 中国有色桂林矿产地质研究院有限公司 | A kind of curing agent and curing process of zinc abstraction waste residue |
| CN108751878B (en) * | 2018-08-22 | 2021-08-03 | 中国有色桂林矿产地质研究院有限公司 | Curing agent and curing treatment process for zinc smelting waste residues |
| CN109811141A (en) * | 2019-02-28 | 2019-05-28 | 西安建筑科技大学 | A kind of refining lead skim enters furnace pellet and preparation method thereof |
| CN109811141B (en) * | 2019-02-28 | 2021-06-08 | 西安建筑科技大学 | Lead smelting slag charging granules and preparation method thereof |
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| CN103710538B (en) | 2016-01-20 |
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