CN109046756B - Method for selecting enriched graphite in steelmaking desulfurization slag - Google Patents
Method for selecting enriched graphite in steelmaking desulfurization slag Download PDFInfo
- Publication number
- CN109046756B CN109046756B CN201811061137.2A CN201811061137A CN109046756B CN 109046756 B CN109046756 B CN 109046756B CN 201811061137 A CN201811061137 A CN 201811061137A CN 109046756 B CN109046756 B CN 109046756B
- Authority
- CN
- China
- Prior art keywords
- flotation
- graphite
- enriched
- slag
- sand
- 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.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 69
- 239000010439 graphite Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000002893 slag Substances 0.000 title claims abstract description 41
- 238000009628 steelmaking Methods 0.000 title claims abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 title claims description 13
- 230000023556 desulfurization Effects 0.000 title claims description 11
- 238000005188 flotation Methods 0.000 claims abstract description 77
- 239000000428 dust Substances 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004576 sand Substances 0.000 claims abstract description 26
- 238000010298 pulverizing process Methods 0.000 claims abstract description 17
- 238000000498 ball milling Methods 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 13
- 238000012216 screening Methods 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 238000009692 water atomization Methods 0.000 claims abstract description 8
- 238000003801 milling Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 239000002002 slurry Substances 0.000 claims description 28
- 239000004088 foaming agent Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 238000007885 magnetic separation Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 230000001629 suppression Effects 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000011085 pressure filtration Methods 0.000 claims 1
- 239000002516 radical scavenger Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000004069 differentiation Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Landscapes
- Crushing And Grinding (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of steel making, and particularly relates to a method for selecting enriched graphite in steel-making desulphurization slag, which comprises the following steps: a: and (B) treating the desulfurized slag, which comprises the steps of water atomization, spray cooling, pulverization and vigorous screening, wherein: collecting dust containing enriched graphite: the method comprises the steps of negative pressure screening and cyclone enrichment bag-type dust removal, and C: and (3) improving the grade of enriched graphite: comprises the steps of water washing ball milling and sand milling flotation. The spray powdering process is used for replacing the traditional hot splashing process, compared with the existing common hot splashing process, the red slag differentiation efficiency is greatly improved, and the water consumption is saved by more than 40%; the differentiation rate is improved, and the water consumption is reduced; the recovery of enriched graphite is increased, the economic benefit is improved, and the secondary pollution is reduced.
Description
Technical Field
The invention belongs to the technical field of steel making, and particularly relates to a method for selecting enriched graphite in steel-making desulphurization slag.
Background
At present, in domestic steel-making process, the sulfur element in molten iron is generally desulfurized by KR (adding quicklime and stirring) and blowing (blowing passivated magnesium metal particles), and the desulfurized slag generated after operation contains a certain amount of enriched graphite.
We find that the common method for treating domestic current desulphurization slag is as follows: firstly, cooling and pulverizing hot desulfurization slag by using a hot splashing method, then screening by using a large force sieve, and screening large slag steel with the diameter of more than 50 ℃; finally, the screened material and the common steel slag are mixed and then enter a crushing and magnetic separation production line together to select iron elements (including granular steel and refined steel powder) in the steel slag, and the graphite-containing tailings and the steel slag tailings are mixed and then discharged for waste, thereby causing resource waste and secondary environmental pollution.
In the existing treatment method, the common hot splashing pulverization effect is poor, and the water consumption is large; the enriched graphite is used as an available graphite resource, and cannot be effectively recycled, so that economic benefit loss and secondary environmental pollution are caused.
Disclosure of Invention
Aiming at the defects of the existing desulphurization slag treatment process, the invention aims to provide comprehensive iron element selection, recover the enriched graphite in the desulphurization slag tailings and recycle resources.
The specific technical scheme of the invention is as follows:
the invention provides a process for selecting enriched graphite in steelmaking desulfuration slag, which comprises the following steps:
a: the treatment of the desulfurized slag comprises the steps of water atomization, spray cooling, pulverization and vigorous screening,
wherein, the water atomization spray cooling pulverization comprises the following steps: utilizing a spiral atomizing nozzle to atomize the hot desulfurized slag;
and (3) sieving with great force: sieving the pulverized desulfurization slag to obtain dust containing enriched graphite; (ii) a
B: collecting dust containing enriched graphite: the method comprises the steps of negative pressure screening and cyclone enrichment and bag type dust removal, wherein dust containing enriched graphite is collected by utilizing the pipeline negative pressure formed by cyclone and bag type dust removal;
c: and (3) improving the grade of enriched graphite: comprises the steps of water washing ball milling and sand milling flotation,
wherein, the water washing ball milling comprises: washing, ball milling and magnetic separation are carried out on the dust containing the enriched graphite, and the dust is primarily separated; obtaining steel fine powder through a magnetic separator;
sanding flotation: comprises coarse flotation, four-sand four-flotation and fine flotation,
a. coarse flotation: controlling the concentration of the slurry subjected to magnetic separation within the range of 20-25%, and adding a foaming agent and a catching agent into a rough flotation inlet, wherein the ratio of the slurry to the foaming agent is 1T: 1-1.5 kg; the ratio of the slurry to the foaming agent is 1T: 0.5-1 kg. Sending the formed bubble slurry to a four-sand four-flotation process;
b. four-sand grinding and four-flotation: adopting a process of sanding firstly and then floating, sanding the bubble slurry from the roughing procedure to further separate graphite from impurities; carrying out flotation purification on graphite by using a flotation machine;
c. fine flotation: adopting a flotation machine to carry out final purification and separation on the graphite slurry subjected to four-sand grinding and four-flotation process by supplementing new water to obtain graphite
Preferably, the selection process further comprises dust control, wherein the dust control comprises a micron-sized fixed fog gun dust suppression and water recycling environment-friendly process.
Preferably, the water atomization spray cooling pulverization process in the step A comprises the following steps: atomizing water for pulverization into water drops with the diameter less than 1mm by using a spiral atomizing nozzle with the diameter of 15-20 mm, and further pulverizing hot slag of the desulfurization slag; eliminating the slag of the large plate, separating slag steel and reducing the temperature to normal temperature, and facilitating subsequent treatment.
Preferably, the pulverized desulfurization slag obtained in the step A is screened by using a large-force screen which is a bar screen with the aperture of 50-100 mm, the material is fed by a loader, the material fed by the screen is slag steel, and the material fed by the screen is raw material collected by grain steel, graphite and steel powder.
Preferably, in the step B, the dust containing enriched graphite is collected by utilizing the pipeline negative pressure formed by cyclone and bag type dust removal and matching with an excitation sieve with the aperture of 3-5 mm, the dust is used as a raw material for selecting graphite in the next flotation process, and a steel particle sieve with the aperture of more than 3mm is separated and taken out.
Preferably, in the water washing ball milling in the step C, the dust containing the enriched graphite is subjected to water washing ball milling and magnetic separation, and the enriched graphite, the steel fine powder and other impurities in the dust are primarily separated in a ball milling mode by utilizing the rotation of the phi 60-120 mm steel ball in the mill body with the diameter phi 1200-3600 mm.
Preferably, in the sand flotation process in C, the enriched graphite is floated to reach a grade of more than 80%, and impurities are separated.
Preferably, in the rough flotation process in the step a, the slurry is formed into bubble slurry with the diameter of 7-15 mm under the combined action of a flotation machine, a foaming agent and a catching agent, the bubble slurry is scraped by a scraper, and the bubble slurry is conveyed to a four-sand four-flotation process through an overflow chute.
Preferably, the frother in the coarse flotation of the step a is 2# flotation oil, and the catcher is diesel oil.
Preferably, in the step a, the slurry of the bubbles with the diameter of 7-15 mm formed in the step a in the rough flotation is sent to a four-sand four-flotation process.
Preferably, the four-sanding four-flotation in the step b adopts a process of sanding firstly and then flotation, the sand mill adopts a vertical grinder with the diameter of 800-1200 mm, and the filling abrasive material is zirconia ceramic balls. The main function is to sand the bubble slurry from the roughing procedure to further separate the graphite from the impurities; the flotation machine is an XJK type upper inflatable scraper flotation machine and is used for carrying out flotation purification on graphite.
Preferably, the flotation machine in the step b four-sand four-flotation and the step c fine flotation adopts an XJK type upper inflatable scraper flotation machine.
Preferably, an XJK type upper inflatable scraper flotation machine is adopted in the step c, the graphite slurry after the intermediate separation process is finally purified by supplementing new water, and the final separation of tail mud and graphite is realized. Wherein, the tail mud is conveyed out by a slurry pump; and carrying out filter pressing on the graphite by using a plate and frame filter press to form a finished graphite block.
In the process, the foaming agent and the trapping agent are only added at a rough separation inlet, and the foaming agent and the trapping agent are not added in the subsequent process.
Compared with the prior art, the invention has the advantages that:
the spray powdering process is used for replacing the traditional hot splashing process, compared with the existing common hot splashing process, the red slag differentiation efficiency is greatly improved, and the water consumption is saved by more than 40%; the differentiation rate is improved, and the water consumption is reduced; on the basis of fully ensuring the full recovery of iron-containing materials such as slag steel, granular steel, steel fine powder and the like, the recovery of enriched graphite is increased, the economic benefit is improved, and the secondary pollution is reduced. The consumption of water for pulverization is reduced, and the production cost is reduced; the recovery of enriched graphite is increased, and the economic benefit is improved.
Drawings
FIG. 1 is a process flow chart of the method for selecting the enriched graphite in the steel-making desulphurization slag of the invention.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
The invention relates to a novel desulfurized graphite treatment production line of Laiwu iron and Steel double-mountain argil welfare processing Limited company, which adopts the technical method developed by the patent of the invention. The production line can process 5 ten thousand tons of desulfurized graphite annually, about 4000 tons of enriched graphite with the grade of more than 80% can be recovered annually under the condition of ensuring that the iron-containing materials are fully recovered, and good economic benefit is realized.
The main production process comprises the following steps:
a: the treatment of the desulfurized slag comprises the steps of water atomization, spray cooling, pulverization and vigorous screening,
water atomization, spray cooling and pulverization: atomizing the pulverization into water drops with the diameter less than 1mm by using a spiral atomizing nozzle with the diameter of 15mm, further pulverizing the hot slag of the desulfurization slag, eliminating slag bonding of a large plate, separating slag steel, and reducing the temperature to normal temperature, thereby facilitating subsequent treatment;
and (4) sieving with strong force: sieving the pulverized desulfurization raw slag to obtain dust containing enriched graphite; the large-force sieve is a bar sieve with the aperture of 50mm, and is fed by a loader, the material fed by the loader is slag steel, and the material fed by the loader is raw materials collected by grain steel, graphite and steel powder;
b: collecting dust containing enriched graphite: the method comprises the steps of negative pressure screening and cyclone enrichment and bag type dust removal, wherein pipeline negative pressure formed by cyclone and bag type dust removal is utilized, and a vibration sieve with the aperture of 3mm is matched, so that dust containing enriched graphite is collected and used as a raw material for selecting graphite in the next flotation process, and a steel particle sieve with the diameter of more than 3mm is separated and taken out;
c: and (3) improving the grade of enriched graphite: comprises the steps of water washing ball milling and sand milling flotation,
carrying out water washing ball milling and magnetic separation on the graphite-containing dust, and primarily separating the enriched graphite, steel fine powder and other impurities in the dust in a ball milling mode by utilizing the rotation of a phi 60mm steel ball in a mill body with the diameter phi 1200 mm; the ground slurry is processed by a magnetic separator to obtain steel fine powder;
sand grinding and flotation: the method comprises coarse flotation, four-sand flotation and fine flotation, wherein the enriched graphite is subjected to flotation so as to reach the average grade of 88%, and impurities are separated. The method specifically comprises the following steps:
a. coarse flotation: controlling the concentration of the slurry after magnetic separation within 23 percent, and adding a foaming agent and a catching agent into a rough flotation inlet. Adopting an XJK type upper inflatable scraper flotation machine for rough flotation, wherein a foaming agent is 2# flotation oil, and the adding amount is 1T:1.4 kg; the trapping agent is diesel oil, and the addition amount is 1T:0.8 kg. In the rough flotation process, under the combined action of a flotation machine, a foaming agent and a catching agent, slurry forms bubble slurry with the diameter of 7-15 mm, is scraped out by a scraper and is conveyed to a four-sand four-flotation process through an overflow groove.
b. Four-sanding and four-floating: the selection adopts a process of sanding firstly and then floating. The sand mill adopts a phi 800 vertical mill, the filled grinding material is zirconia ceramic balls, and the main function is to sand bubble slurry from the roughing procedure so as to further separate graphite from impurities; the flotation machine adopts an XJK type upper inflatable scraper flotation machine and has the function of completely floating and purifying graphite.
c. Fine flotation: and finally purifying the graphite slurry subjected to the intermediate separation process by supplementing new water by adopting an XJK type upper inflatable scraper flotation machine, and realizing the final separation of tail mud and graphite. Wherein, the tail mud is conveyed out by a slurry pump; and carrying out filter pressing on the graphite by using a plate and frame filter press to form a finished graphite block.
In the process, the foaming agent and the trapping agent are only added at a rough separation inlet, and the foaming agent and the trapping agent are not added in the subsequent process.
The present invention may be embodied in many different forms and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A method for selecting enriched graphite in steelmaking desulfuration slag comprises the following steps:
a: the treatment of the desulfurized slag comprises the steps of water atomization, spray cooling, pulverization and vigorous screening,
screening the pulverized desulfurization slag obtained in the step A by using a large-force screen which is a bar screen with the aperture of 50-100 mm;
the water atomization spray cooling pulverization comprises the following steps: utilizing a spiral atomizing nozzle to atomize the hot desulfurized slag; atomizing water for pulverization into water drops with the diameter of phi 1mm or less by using a spiral atomizing nozzle with the diameter of phi 15-20 mm, and further pulverizing the hot desulfurization slag;
and (3) sieving with great force: sieving the pulverized desulfurization slag to obtain dust containing enriched graphite;
b: collecting dust containing enriched graphite: the method comprises the steps of negative pressure screening and cyclone enrichment and bag type dust removal, wherein dust containing enriched graphite is collected by utilizing the pipeline negative pressure formed by cyclone and bag type dust removal;
c: and (3) improving the grade of enriched graphite: comprises the steps of water washing ball milling and sand milling flotation,
wherein, the water washing ball milling comprises: washing, ball milling and magnetic separation are carried out on the dust containing the enriched graphite, and the dust is primarily separated; obtaining steel fine powder through a magnetic separator;
sanding flotation: comprises coarse flotation, four-sand four-flotation and fine flotation,
a. coarse flotation: controlling the concentration of the slurry subjected to magnetic separation within the range of 20-25%, and adding a foaming agent and a catching agent into a rough flotation inlet, wherein the ratio of the slurry to the foaming agent is 1T: 1-1.5 kg; the ratio of the slurry to the catching agent is 1T: 0.5-1 kg, and the formed bubble slurry is sent to a four-sand four-flotation process;
b. four-sand grinding and four-flotation: adopting a process of sanding firstly and then floating, sanding the bubble slurry from the roughing procedure to further separate graphite from impurities; carrying out flotation purification on graphite by using a flotation machine;
c. fine flotation: and (4) adopting a flotation machine, and finally purifying and separating the graphite slurry subjected to four-sand grinding and four-flotation process by supplementing new water to obtain graphite.
2. The method of claim 1, further comprising dust control, wherein dust control comprises micro-scale stationary fog gun dust suppression and water recycling environmental protection processes.
3. The method according to claim 1, wherein in the water washing ball milling in the step C, the dust containing the enriched graphite is subjected to water washing ball milling and magnetic separation, and the enriched graphite, the fine steel powder and other impurities in the dust are subjected to primary separation in a ball milling mode by utilizing the rotation of the phi 60-120 mm steel balls in the mill body with the diameter phi 1200-3600 mm.
4. The method of claim 1, wherein the frother in step a is # 2 flotation oil and the scavenger is diesel.
5. The method according to claim 1, wherein the slurry of the bubbles with the diameter of 7-15 mm formed in the coarse flotation in the step a is sent to a four-sand four-flotation process.
6. The method according to claim 1, wherein the four-sanding four-flotation in the step b adopts a process of sanding firstly and then flotation, the sand mill adopts a vertical grinder with the diameter of 800-1200 mm, and the filled grinding materials are zirconia ceramic balls.
7. The method of claim 1, wherein said flotation machine in step b of four sand four flotation and in step c of fine flotation is an XJK type upper inflatable scraper flotation machine.
8. The method as claimed in claim 1, wherein the graphite obtained in the fine flotation in the step c is subjected to pressure filtration by a plate-and-frame filter press to form a finished graphite block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061137.2A CN109046756B (en) | 2018-09-12 | 2018-09-12 | Method for selecting enriched graphite in steelmaking desulfurization slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061137.2A CN109046756B (en) | 2018-09-12 | 2018-09-12 | Method for selecting enriched graphite in steelmaking desulfurization slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109046756A CN109046756A (en) | 2018-12-21 |
| CN109046756B true CN109046756B (en) | 2020-09-18 |
Family
ID=64760227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811061137.2A Active CN109046756B (en) | 2018-09-12 | 2018-09-12 | Method for selecting enriched graphite in steelmaking desulfurization slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109046756B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420809A (en) * | 2020-03-04 | 2020-07-17 | 华中科技大学 | Flotation separation method for casting dust removal ash powder |
| CN114887775B (en) * | 2022-03-29 | 2023-03-21 | 中南大学 | Method for efficiently separating and recycling graphite from vanadium leaching slag |
| CN115254319B (en) * | 2022-06-23 | 2023-12-05 | 山东钢铁股份有限公司 | Device and method for separating primary large-scale graphite from molten iron pretreatment desulfurization slag |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276123A (en) * | 2013-06-07 | 2013-09-04 | 山西太钢不锈钢股份有限公司 | Method for cooling stainless steel slag |
| CN103433141A (en) * | 2013-07-25 | 2013-12-11 | 山东煤机装备集团有限公司 | Technical method for sorting desulfuration residues of steel plant |
| CN103433119A (en) * | 2013-07-25 | 2013-12-11 | 山东煤机装备集团有限公司 | Application of steel mill desulphurizing slag separating graphite |
| CN104141018A (en) * | 2014-07-23 | 2014-11-12 | 重庆大学 | Recycling method for steel slag |
| RU2540236C2 (en) * | 2013-05-07 | 2015-02-10 | Федеральное государственное бюджетное учреждение науки Институт химии Дальневосточного отделения Российской академии наук (ИХ ДВО РАН) | Processing of high-carbon gold-bearing rock |
| CN105129783A (en) * | 2015-08-24 | 2015-12-09 | 莱芜大山资源利用环保科技有限公司 | Device for purifying graphite by taking desulfuration residues as raw materials and processing technology |
| CN106513164A (en) * | 2016-11-09 | 2017-03-22 | 金建工程设计有限公司 | Large-scale crystalline graphite ore flotation fast selecting agent and flotation technology |
-
2018
- 2018-09-12 CN CN201811061137.2A patent/CN109046756B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2540236C2 (en) * | 2013-05-07 | 2015-02-10 | Федеральное государственное бюджетное учреждение науки Институт химии Дальневосточного отделения Российской академии наук (ИХ ДВО РАН) | Processing of high-carbon gold-bearing rock |
| CN103276123A (en) * | 2013-06-07 | 2013-09-04 | 山西太钢不锈钢股份有限公司 | Method for cooling stainless steel slag |
| CN103433141A (en) * | 2013-07-25 | 2013-12-11 | 山东煤机装备集团有限公司 | Technical method for sorting desulfuration residues of steel plant |
| CN103433119A (en) * | 2013-07-25 | 2013-12-11 | 山东煤机装备集团有限公司 | Application of steel mill desulphurizing slag separating graphite |
| CN104141018A (en) * | 2014-07-23 | 2014-11-12 | 重庆大学 | Recycling method for steel slag |
| CN105129783A (en) * | 2015-08-24 | 2015-12-09 | 莱芜大山资源利用环保科技有限公司 | Device for purifying graphite by taking desulfuration residues as raw materials and processing technology |
| CN106513164A (en) * | 2016-11-09 | 2017-03-22 | 金建工程设计有限公司 | Large-scale crystalline graphite ore flotation fast selecting agent and flotation technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109046756A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104023851B (en) | ore processing | |
| CN109046756B (en) | Method for selecting enriched graphite in steelmaking desulfurization slag | |
| CN102861663A (en) | Breaking grinding dissociation and re-flotation two-stage recovery process of coal in scarce coking | |
| CN110560258B (en) | Device and process for selecting ultra-clean coal by physical cyclone recovery jigging overflow coal slime | |
| CN108212507B (en) | Mineral processing technology for recovering fine grains and micro-fine grains of cassiterite from tailings | |
| CN100553784C (en) | Andalusite ore strong magnetic-heavy media separation technique | |
| US6656440B2 (en) | Exhaust gas desulfurizing method and system therefor | |
| CN112642580B (en) | Disposal method for gradient utilization of steel slag | |
| CN115418498B (en) | Treatment method of carbonate lithium clay | |
| CN111285405A (en) | Method for separating calcium ferrite and magnesium ferrite from steel slag magnetic separation tailings | |
| CN113976306A (en) | Pre-waste-throwing system and process for complex refractory low-grade molybdenum ore heavy-medium beneficiation | |
| CN110586318B (en) | Method for comprehensive utilization of blast furnace ash | |
| CN110961244B (en) | Method for pre-enriching vanadium-containing minerals in medium-fine scale graphite ores | |
| CN103537365B (en) | The system of a kind of aluminium electrolytic cell cathode sole piece harmless treatment and technique | |
| CN110624682B (en) | Laboratory ore grinding method for unevenly distributed gold ores | |
| CN114226413A (en) | Comprehensive treatment process of lithium slag | |
| CN109847923B (en) | Recovery process of extremely-poor weathered primary ilmenite | |
| KR101183113B1 (en) | Method for recovering valuable materials from by-product of steel manufacturing process | |
| CN115870090A (en) | Gradient waste-throwing sorting quality-improving system and process for coarse-grained sulfide ore | |
| RU2055643C1 (en) | Gold-bearing ores processing complex | |
| CN111471869A (en) | Crushing treatment process for copper smelting top-blown furnace slag | |
| CN102886301A (en) | Hematite beneficiation method | |
| CN110976068A (en) | Separation and enrichment treatment method for low-grade copper slag of blast furnace | |
| RU2132742C1 (en) | Method of concentrating magnetite ores | |
| CN111185297A (en) | Blast furnace low-grade copper slag enrichment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Selection method of enriched graphite in desulphurization slag of steelmaking Effective date of registration: 20230214 Granted publication date: 20200918 Pledgee: Agricultural Bank of China Limited Laiwu Branch Pledgor: SHANDONG TAIDONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2023980032623 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200918 Pledgee: Agricultural Bank of China Limited Laiwu Branch Pledgor: SHANDONG TAIDONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2023980032623 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Selection method for enriched graphite in desulfurization slag of steelmaking Granted publication date: 20200918 Pledgee: Agricultural Bank of China Limited Laiwu Branch Pledgor: SHANDONG TAIDONG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2024980005633 |