CN103589857A - Full utilization method for middle and low-grade pyrite - Google Patents
Full utilization method for middle and low-grade pyrite Download PDFInfo
- Publication number
- CN103589857A CN103589857A CN201310543398.9A CN201310543398A CN103589857A CN 103589857 A CN103589857 A CN 103589857A CN 201310543398 A CN201310543398 A CN 201310543398A CN 103589857 A CN103589857 A CN 103589857A
- Authority
- CN
- China
- Prior art keywords
- pyrite
- slag
- utilization method
- low
- dioxide gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052683 pyrite Inorganic materials 0.000 title claims abstract description 25
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000011028 pyrite Substances 0.000 title claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 94
- 229910052742 iron Inorganic materials 0.000 claims abstract description 49
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 38
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 30
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002893 slag Substances 0.000 claims abstract description 23
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 238000007885 magnetic separation Methods 0.000 claims abstract description 13
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000009628 steelmaking Methods 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 6
- 239000005864 Sulphur Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 10
- MBMLMWLHJBBADN-UHFFFAOYSA-N iron-sulfur Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 abstract description 14
- 229910052717 sulfur Inorganic materials 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000002505 iron Chemical class 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003818 cinder Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000003009 desulfurizing Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229960001866 silicon dioxide Drugs 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011068 load Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a full utilization method for middle and low-grade pyrite. The method comprises the following steps: (1) after full-thickness pyrite is exploited, controlling the moisture of the pyrite to be 2-3%, crushing, and grinding the pyrite until the fineness is 50-70 meshes to obtain pyrite powder; (2) adding the crushed pyrite powder to a fluidized bed furnace for roasting to obtain sulfur dioxide gas and slag; (3) preparing sulfuric acid or sulfur by the sulfur dioxide gas; (4) conducting magnetic separation on the slag to obtain fine iron power and waste residue, wherein the total sulfur content of the fine iron power is 0.5-0.7%, directly using the fine iron power as a steel making raw material, and using the waste residue as an admixture for cement concrete. The full utilization method takes full use of the middle and low-grade pyrite, solves the pollution problem of tailings and beneficiation wastewater during the acid preparing process by pyrite, meanwhile improves the burn-out rate of the pyrite, achieves the purpose of low sulfur content of the slag, and provides a powerful guarantee for further utilizing the slag.
Description
Technical field
The present invention relates to the method for low grade pyrite relieving haperacidity in a kind of full use.
Background technology
Sulfurous iron ore is the topmost sulphur resource of China, main as producing sulfuric acid.China's ferro-sulphur ore enriches 10% of ，Zhan world total reserves, occupies the 3rd, but mainly with in low-grade be main.At present, after low-grade sulfurous iron ore exploitation,, first through fragmentation, gravity treatment or flotation, make after the sulphur concentrate of sulfur-bearing 35-48%, then enter stove roasting extracting sulfuric acid with this sulphur concentrate.It is exactly in sulphur Concentrate process, can produce a large amount of mine tailing and beneficiation wastewater not processed that this acid preparation method exists a maximum shortcoming, not only wasted valuable Mineral resources, and beneficiation wastewater has also caused severe contamination to environment.
Chinese patent CN101457290 B discloses a kind of method of middle low grade pyrite comprehensive utilization, and it is that sulfurous iron ore holostrome is exploited out, directly enters boiling roaster after fragmentation, obtains sulfur dioxide gas and slag.Sulfur dioxide gas is for extracting sulfuric acid or sulphur, slag magnetic separation iron fine powder or directly need to add corresponding ore composition according to subsequent product.Although the method has solved the problem of the waste of mine tailing in sulphur Concentrate process and contaminated wastewater, after but sulfurous iron ore is exploited out, to be crushed to 4mm to carry out below roasting, the particle ore deposit roasting method adopting, burning yield is lower, slag sulfur-bearing is higher, and (effectively sulphur is 0.5-1%, full sulphur is 1-2%), the full sulphur of iron fine powder obtaining by magnetic separation is 1.5% left and right, can not be directly as the raw material (Steel Plant are that full sulphur is less than or equal to 0.9% to the requirement of iron fine powder) of Steel Plant, ore deposit must be joined with low-sulfur iron fine powder in use by Steel Plant, purchasing of raw materials cost and the equipment investment cost of Steel Plant have been increased, economic input strengthens.
Summary of the invention
Object of the present invention is just for the deficiencies in the prior art, the method of low grade pyrite in a kind of full use is provided, low-grade sulfurous iron ore raw ore complete utilization in its handle, mine tailing in pyrite-based sulfuric acid production process and the pollution problem of beneficiation wastewater have been solved, improved the burning yield of sulfurous iron ore simultaneously, reach the object of the low sulfur-bearing of slag, for the further utilization of slag provides powerful guarantee.
To achieve these goals, the technical solution used in the present invention is such: a kind of middle low grade pyrite complete utilization method, comprising the following steps: (1) sulfurous iron ore holostrome is controlled its moisture to 2-3% after exploiting out, is 50-70 order by sulfurous iron ore crushing and grinding to fineness, obtains troilite powder; (2) troilite powder after fragmentation enters boiling roaster, obtains sulfur dioxide gas and slag; (3) sulfur dioxide gas is for extracting sulfuric acid or sulphur; (4) slag magnetic separation obtains iron fine powder and waste residue, and in iron fine powder, total sulphur content is 0.5-0.7%, and directly as steelmaking feed, waste residue is for the adulterant of cement concrete.
Preferably, with the waste heat that step (3) is produced sulfuric acid, carrying out sulfurous iron ore to the moisture in baking step (1) is 2-3%, plays resource circulation utilization, energy-saving and cost-reducing object.
Further, the broken fineness of described step (1) sulfurous iron ore is 60 orders, and the burning yield of sulfurous iron ore is best.
The broken sulfurous iron ore of preferred spheres grinding machine, the ore powder granularity obtaining is even.
Compared with prior art, the present invention changes sulfurous iron ore particle roasting in prior art into fine ore roasting, by sulfurous iron ore crushing and grinding to fineness, it is 50-70 object breeze, breeze roasting has improved the burning yield of sulfurous iron ore, thereby reduce the sulphur content of slag, make the full sulfur content of the iron fine powder that its magnetic separation obtains lower than the sulphur content of Steel Plant's steelmaking feed regulation, the raw material that can directly make steel as Steel Plant, reduce equipment purchase and the technical process of Steel Plant, greatly alleviated the economical load of Steel Plant.Ore powder granularity, between 50-70 order, not only can guarantee high burning yield simultaneously, also can avoid the meticulous formation of powder to pile up, and stops up production system pipeline, brings unnecessary maintenance of equipment, reduces production efficiency.The moisture that the present invention simultaneously controls raw ore, at 2-3%, has been controlled the lower moisture that enters stove roasting, has solved the thermal balance question of roasting, energy-saving and cost-reducing.And waste heat that utilize to produce sulfuric acid is dried raw ore, recycle, energy-saving and cost-reducing object have further been played.
Mine tailing and waste water that the inventive method does not have sulphur concentrate to produce, the waste of prior art Mineral Resource and problem of environmental pollution have been solved, in middle low grade pyrite, all the components of symbiosis is all fully used, and is a kind of method that middle low grade pyrite complete utilization well economizes on resources that is suitable for.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the inventive method.
Embodiment
In order more clearly to understand object of the present invention, technical scheme and beneficial effect, below the present invention is described further, but protection scope of the present invention is not limited in following examples.
The present invention adopts breeze sinter process.
Embodiment 1: adopt the sulfurous iron ore of Luzhou City Xuyong County, Sichuan Province, raw ore sulphur content is 15-18%, and water content is below 3%.Raw ore, directly into ball mill, is adjusted to fan delivery, the ore powder granularity grinding is controlled to 50 order effects, breeze is transported to fluidizing furnace finished product bin.By custody transfer mechanism, the breeze in feed bin is delivered in the fluidizing furnace in state of combustion continuously, controlling furnace bottom pressure is 10-12KPa, and furnace temperature is 750-850 ℃, and water colour is controlled as brownish black.The sulfur dioxide gas producing arrives follow-up workshop section pyrite-based sulfuric acid production explained hereafter sulfuric acid routinely.From cinder notch, boiler, tornado dust collector and electric precipitator etc. under fluidizing furnace, collect slag.Slag, through magnetic separation, obtains desulfurization iron fine powder and waste residue, and by analysis, this iron fine powder iron content 60.8%, sulfur-bearing (full sulphur) 0.7%, can be directly used in Steel Plant's steelmaking feed.Waste residue iron content 6.1% after magnetic separation, aluminum oxide 37.5%, silicon-dioxide 32.2%, can be used as the adulterant of producing cement and commerical ready-mixed concrete.
Embodiment 2: adopt the sulfurous iron ore of Yibin City Xingwen County, Sichuan Province, raw ore sulphur content is 15-18%, and water content is 5% left and right.First raw ore is dried to moisture be 2%-3%, wherein dry the waste heat that origin of heat produces in extracting sulfuric acid.Again the raw ore after drying is entered to ball mill, adjust fan delivery, the ore powder granularity grinding is controlled to 60 order effects, breeze is transported to fluidizing furnace finished product bin.By custody transfer mechanism, the breeze in feed bin is delivered in the fluidizing furnace in state of combustion continuously, controlling furnace bottom pressure is 10-12KPa, and furnace temperature is 750-850 ℃, and water colour is controlled as brownish black.The sulfur dioxide gas producing arrives follow-up workshop section pyrite-based sulfuric acid production explained hereafter sulfuric acid routinely.From cinder notch, boiler, tornado dust collector and electric precipitator etc. under fluidizing furnace, collect slag.Slag, through magnetic separation, obtains desulfurization iron fine powder and waste residue, and by analysis, this iron fine powder iron content 60.2%, sulfur-bearing (full sulphur) 0.6%, can be directly used in Steel Plant's steelmaking feed.Waste residue iron content 5.5% after magnetic separation, aluminum oxide 35.1%, silicon-dioxide 33.6%, can be used as the adulterant of producing cement and commerical ready-mixed concrete.
Embodiment 3: adopt the sulfurous iron ore of Dafang County, Guizhou Province, raw ore sulphur content is 17-20%, and water content is below 3%.Raw ore, directly into ball mill, is adjusted to fan delivery, the ore powder granularity grinding is controlled to 70 order effects, breeze is transported to fluidizing furnace finished product bin.By custody transfer mechanism, the breeze in feed bin is delivered in the fluidizing furnace in state of combustion continuously, controlling furnace bottom pressure is 10-12KPa, and furnace temperature is 750-850 ℃, and water colour is controlled as brownish black.The sulfur dioxide gas producing arrives follow-up workshop section pyrite-based sulfuric acid production explained hereafter sulfuric acid routinely.From cinder notch, boiler, tornado dust collector and electric precipitator etc. under fluidizing furnace, collect slag.Slag, through magnetic separation, obtains desulfurization iron fine powder and waste residue, and by analysis, this iron fine powder iron content 61.4%, sulfur-bearing (full sulphur) 0.7%, can be directly used in Steel Plant's steelmaking feed.Waste residue iron content 6.3% after magnetic separation, aluminum oxide 38.9%, silicon-dioxide 30.7%, can be used as the adulterant of producing cement and commerical ready-mixed concrete.
Comparative example: adopt particle sinter process.The sulfurous iron ore that adopts Luzhou City Xuyong County, Sichuan Province, raw ore sulphur content is 15-18%, water content is below 3%.
Raw ore is crushed to 4mm and to be lowered to fluidizing furnace, at the temperature of 850-950 ℃, carries out fluidized bed roasting, obtain sulfur dioxide gas and slag.By analysis, in this slag, sulfur-bearing (full sulphur) is 1.8%.Slag obtains iron fine powder through magnetic separation, and this iron fine powder sulfur-bearing (full sulphur) is 1.5%, can not be directly as the raw material of Steel Plant, and ore deposit must be joined with low-sulfur iron fine powder in use by Steel Plant.
Claims (4)
1. a low grade pyrite complete utilization method in, is characterized in that: comprise the following steps:
(1) after exploiting out, to control its moisture be 2-3% to sulfurous iron ore holostrome, by its crushing and grinding to fineness, is 50-70 order, obtains troilite powder;
(2) troilite powder enters boiling roaster, obtains sulfur dioxide gas and slag;
(3) sulfur dioxide gas is for extracting sulfuric acid or sulphur;
(4) slag magnetic separation obtains iron fine powder and waste residue, and in iron fine powder, total sulphur content is 0.5-0.7%, and directly as steelmaking feed, waste residue is for the adulterant of cement concrete.
2. a kind of middle low grade pyrite complete utilization method according to claim 1, is characterized in that: with the waste heat that step (3) is produced sulfuric acid, carrying out sulfurous iron ore to the moisture in baking step (1) is 2-3%.
3. a kind of middle low grade pyrite complete utilization method according to claim 1, is characterized in that: the broken fineness of described step (1) sulfurous iron ore is 60 orders.
4. according to a kind of middle low grade pyrite complete utilization method described in claim 1 or 3, it is characterized in that: the disintegrating apparatus of described step (1) is ball mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310543398.9A CN103589857A (en) | 2013-11-06 | 2013-11-06 | Full utilization method for middle and low-grade pyrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310543398.9A CN103589857A (en) | 2013-11-06 | 2013-11-06 | Full utilization method for middle and low-grade pyrite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103589857A true CN103589857A (en) | 2014-02-19 |
Family
ID=50080167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310543398.9A Pending CN103589857A (en) | 2013-11-06 | 2013-11-06 | Full utilization method for middle and low-grade pyrite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103589857A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502305A (en) * | 2015-12-30 | 2016-04-20 | 贵州省大方润丰化工有限公司 | Pyrite low-oxygen roasting method for increasing proportion of Fe3O4 in total iron of roasted residues |
| CN105543470A (en) * | 2015-12-30 | 2016-05-04 | 贵州省大方润丰化工有限公司 | Method for efficiently extracting iron from iron pyrite roasting slag |
| CN106006570A (en) * | 2016-05-25 | 2016-10-12 | 刘松 | Comprehensive utilization method of pyrite concentrate and high-sulfur coal |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2118880A1 (en) * | 1970-04-20 | 1971-11-04 | Boliden Ab | Process for the treatment of fine-grained metal oxide-containing, preferably iron-oxide-containing material |
| CN1632140A (en) * | 2004-12-30 | 2005-06-29 | 昆明易明兴矿冶设备有限公司 | Method for producing iron ore by baking troilite powder in cyclone furnace |
| CN1772598A (en) * | 2005-09-29 | 2006-05-17 | 赵恩举 | New acid preparing process with pyrite ore |
| CN101054166A (en) * | 2007-04-11 | 2007-10-17 | 张跃 | Method of producing sulfur from low-grade pyrites by two-section fluid bed |
| CN101457289A (en) * | 2009-01-08 | 2009-06-17 | 云南常青树投资有限公司 | Method for comprehensive utilization of middle and low grade ferro-sulphur ore and by-production of high-alumina slag and ferrosilicon |
| CN101457290A (en) * | 2009-01-08 | 2009-06-17 | 云南常青树投资有限公司 | Comprehensive utilization method of middle and low grade ferro-sulphur ore |
| CN101456559A (en) * | 2009-01-08 | 2009-06-17 | 云南常青树投资有限公司 | Method for by-producing porous silicon dioxide, aluminum hydroxide and ferrite yellow from middle and low grade ferro-sulphur ore |
| CN102586618A (en) * | 2012-03-31 | 2012-07-18 | 长沙有色冶金设计研究院有限公司 | Process of smelting iron pyrite |
| CN102586586A (en) * | 2012-03-09 | 2012-07-18 | 中南大学 | Method for magnetizing, roasting and sorting low-grade iron ores |
-
2013
- 2013-11-06 CN CN201310543398.9A patent/CN103589857A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2118880A1 (en) * | 1970-04-20 | 1971-11-04 | Boliden Ab | Process for the treatment of fine-grained metal oxide-containing, preferably iron-oxide-containing material |
| GB1345246A (en) * | 1970-04-20 | 1974-01-30 | Boliden Ab | Method of producing a hard coarse roasted product from iron sulphide |
| CN1632140A (en) * | 2004-12-30 | 2005-06-29 | 昆明易明兴矿冶设备有限公司 | Method for producing iron ore by baking troilite powder in cyclone furnace |
| CN1772598A (en) * | 2005-09-29 | 2006-05-17 | 赵恩举 | New acid preparing process with pyrite ore |
| CN101054166A (en) * | 2007-04-11 | 2007-10-17 | 张跃 | Method of producing sulfur from low-grade pyrites by two-section fluid bed |
| CN101457289A (en) * | 2009-01-08 | 2009-06-17 | 云南常青树投资有限公司 | Method for comprehensive utilization of middle and low grade ferro-sulphur ore and by-production of high-alumina slag and ferrosilicon |
| CN101457290A (en) * | 2009-01-08 | 2009-06-17 | 云南常青树投资有限公司 | Comprehensive utilization method of middle and low grade ferro-sulphur ore |
| CN101456559A (en) * | 2009-01-08 | 2009-06-17 | 云南常青树投资有限公司 | Method for by-producing porous silicon dioxide, aluminum hydroxide and ferrite yellow from middle and low grade ferro-sulphur ore |
| CN102586586A (en) * | 2012-03-09 | 2012-07-18 | 中南大学 | Method for magnetizing, roasting and sorting low-grade iron ores |
| CN102586618A (en) * | 2012-03-31 | 2012-07-18 | 长沙有色冶金设计研究院有限公司 | Process of smelting iron pyrite |
Non-Patent Citations (1)
| Title |
|---|
| 刘少武等编著: "《硫酸生产技术》", 30 June 1993, 东南大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502305A (en) * | 2015-12-30 | 2016-04-20 | 贵州省大方润丰化工有限公司 | Pyrite low-oxygen roasting method for increasing proportion of Fe3O4 in total iron of roasted residues |
| CN105543470A (en) * | 2015-12-30 | 2016-05-04 | 贵州省大方润丰化工有限公司 | Method for efficiently extracting iron from iron pyrite roasting slag |
| CN106006570A (en) * | 2016-05-25 | 2016-10-12 | 刘松 | Comprehensive utilization method of pyrite concentrate and high-sulfur coal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104694760B (en) | It is a kind of to handle the method and system that red mud reclaims Iron concentrate | |
| CN102399993B (en) | Method for treating waste residue from wet method gold smelting | |
| CN102071310B (en) | Method for comprehensively utilizing gold and arsenic-containing sulfur concentrate | |
| CN102766718B (en) | Method for producing sponge iron and zinc-rich materials by blast furnace zinc-containing ash | |
| CN101879599B (en) | Method for preparing reductive iron powder and high-purity refined iron powder by using iron ores | |
| CN102363218B (en) | Method for producing copper-powder-containing iron by reducing copper-containing furnace cinders directly | |
| CN101775485B (en) | Discarded tailing preconcentration-magnetizing roast iron-extracting and sulphur-reducing beneficiation method of sulphur-smelting cinder | |
| CN108396138B (en) | Method for enriching and separating vanadium titano-magnetite | |
| CN203728902U (en) | Integrated solid waste gas ash and zinc-containing ferrovanadium slag recovery device | |
| CN102728457A (en) | Method of producing nickel-containing iron ore concentrate from siliceous iron oxide ores containing nickel | |
| CN102373329A (en) | Method for gathering nickel and iron from laterite-nickel ores | |
| CN103103344A (en) | Dressing-smelting combined treatment method for sulfate-containing lead-zinc smelting slags | |
| CN105463147A (en) | Method for producing nickel iron powder by directly reducing nickel laterite ores in rotary kiln | |
| CN108380360B (en) | Production process of steel slag and iron fine powder | |
| CN201589515U (en) | Roasting reduction shaft furnace | |
| CN105734192B (en) | A kind of mineral processing production method of low grade hematite | |
| CN103131849A (en) | Sulfur concentrate sand roasting method favorable for comprehensive resource utilization | |
| CN109013051B (en) | Method and device for producing high-nickel alloy by coal-based direct reduction and magnetic separation | |
| CN103589857A (en) | Full utilization method for middle and low-grade pyrite | |
| CN102094115B (en) | Method for dephosphorizing phosphorus-containing hematite and preparing iron ore concentrate by using phosphorus-containing hematite | |
| CN203878184U (en) | Reducing roasting device of copper slag rotary kiln | |
| CN103555930A (en) | Method for reduction roasting of high-magnesium poor-quality nickel laterite | |
| CN101463420B (en) | Method and apparatus for enriching low grade siderite | |
| CN101864506A (en) | Method for preparing direct reduced iron from low-grade high-phosphorus high-silicon iron ore | |
| CN101638703B (en) | Method for directly reducing nickel containing pig iron by lateritic nickel in tunnel kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140219 |