CN104001627A - Inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores - Google Patents
Inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores Download PDFInfo
- Publication number
- CN104001627A CN104001627A CN201410197123.9A CN201410197123A CN104001627A CN 104001627 A CN104001627 A CN 104001627A CN 201410197123 A CN201410197123 A CN 201410197123A CN 104001627 A CN104001627 A CN 104001627A
- Authority
- CN
- China
- Prior art keywords
- scheelite
- calcium
- inhibitor
- inhibiting agent
- inhibiting
- 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.)
- Granted
Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 42
- 239000011707 mineral Substances 0.000 title claims abstract description 42
- 230000002401 inhibitory effect Effects 0.000 title abstract description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title abstract description 9
- 239000011575 calcium Substances 0.000 title abstract description 9
- 229910052791 calcium Inorganic materials 0.000 title abstract description 9
- 239000003795 chemical substances by application Substances 0.000 title abstract 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 10
- 239000003112 inhibitor Substances 0.000 claims description 22
- 239000002994 raw material Substances 0.000 claims description 14
- 229940124639 Selective inhibitor Drugs 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 150000007513 acids Chemical class 0.000 claims description 6
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 239000010436 fluorite Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 229910021532 Calcite Inorganic materials 0.000 abstract description 7
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 230000004913 activation Effects 0.000 abstract description 3
- 229910021645 metal ion Inorganic materials 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000005188 flotation Methods 0.000 description 18
- 238000000926 separation method Methods 0.000 description 10
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 7
- 235000019353 potassium silicate Nutrition 0.000 description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 229910001576 calcium mineral Inorganic materials 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- ZXOKVTWPEIAYAB-UHFFFAOYSA-N dioxido(oxo)tungsten Chemical compound [O-][W]([O-])=O ZXOKVTWPEIAYAB-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical group OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The invention discloses an inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores, and belongs to the technical field of mineral processing engineering. The inhibiting agent is formed by reacting the mixture of metal salt 80 percent-90 percent and polycarboxylate compounds 10 percent-20 percent. As metal ions have a selective activation effect on the calcium active points of the calcium-containing minerals, the selective inhibition effect on the calcium-containing gangue minerals by the polycarboxylate compounds is enhanced, and the effect of the inhibiting agent is improved. The inhibiting agent can be used in ore slurry at normal temperature, the usage amount of the inhibiting agent ranges from 200 g/t to 300 g/t, and the inhibiting agent is suitable for recovering scheelite from ores by selectively inhibiting the calcium-containing gangue minerals such as fluorspar and calcite when scheelite gangue minerals are mainly the calcium-containing minerals (the fluorspar and the calcite).
Description
Technical field
The inhibitor that the present invention relates to calcic gangue mineral in a kind of selective inhibition scheelite ore, belongs to Mineral Processing Engineering technical field.
Background technology
The tungsten ore resource of China, mainly contain wolframite, scheelite and black and white and mix tungsten, thin-graded wolframite resource is substantially exhausted, existing tungsten resource is mainly the scheelite of difficult choosing, and in scheelite, have 80% above geologic grade to be less than 0.4%, and complicated components, the Scheelite Deposit of association accounts for 70% of whole Scheelite Deposits altogether.Scheelite ore type mainly contains scheelite-calcic gangue mineral (fluorite, calcite etc.) and scheelite-silicate mineral (quartzy etc.) two large classes, wherein scheelite-calcic gangue mineral type ore to sort separation more difficult.
Scheelite ore dressing generally adopts floatation process to sort, and along with the continuous exploitation of scheelite resource, ore properties is also in continuous variation, also more and more higher to the requirement of production technology and environmental protection.Scheelite normal with the common association of calcic gangue mineral such as fluorite, calcite, because calcic gangue mineral and scheelite are the mineral that solubility is high, course of dissolution Minerals surface transforms mutually, its physicochemical properties are similar, thereby make to be difficult between scheelite and calcic gangue mineral the FLOTATION SEPARATION effect that reaches good.In Scheelite Flotation practice, as the inhibitor of calcic gangue mineral, mainly contain the organic inhibitors such as the inorganic inhibitors such as waterglass, phosphate and citric acid, starch, carboxymethyl cellulose, wherein waterglass and improved chemical thereof have good selective inhibitory to calcic gangue minerals such as fluorite and calcites, industrial, are most widely used.But the modulus of waterglass, consumption, slurry pH and temperature are very large to Scheelite Flotation Index Influence, because be carries out flotation under high-alkali hot conditions, to give operation, safeguard and brought very large difficulty, environment also can be greatly affected.
Summary of the invention
The object of the present invention is to provide the inhibitor of calcic gangue mineral in a kind of selective inhibition scheelite ore, this inhibitor is formed by following raw material hybrid reaction, and each raw material and percentage by weight thereof are: slaine 80% ~ 90%, polycarboxylic acids or polycarboxylate compounds 20% ~ 10%.
Slaine of the present invention is for containing Pb
2+nitrate.
Polycarboxylic acids of the present invention or polycarboxylate compounds are have-C0O
-polar group, polycarboxylic acids or polycarboxylate compounds that molecular weight is greater than 8,000,000.
The consumption of inhibitor of the present invention is 200～300g/t, is suitable for from ore, optionally suppressing the calcic gangue minerals such as fluorite, calcite when scheelite gangue mineral is mainly calcium mineral (fluorite, calcite) and reclaims scheelite.
Feature of the present invention is: metal ion has Selective activation effect to the calcium active site of calcium mineral, has strengthened the selective inhibitory of polycarboxylate compounds to calcic gangue mineral, thereby has improved the action effect of inhibitor.
Mechanism of the present invention: on the basis of the calcium active site of metalloform-selective activation calcic gangue mineral (fluorite, calcite), polycarboxylate compounds dissolve produce-COO
-optionally with calcic gangue mineral act on gangue mineral Surface Creation hydrophilic-COOCa, thereby make calcic gangue mineral hydrophilic suppressed, reach the effectively separated effect of scheelite and calcic gangue mineral.
With respect to prior art advantage of the present invention:
(1) medicament involved in the present invention has optionally inhibitory action to calcic gangue minerals such as fluorite, calcites;
(2), in the situation that separating effect is close, the consumption of the conventional calcic gangue mineral of the amount ratio of medicament involved in the present invention inhibitor waterglass is little a lot.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is described in further detail, but protection scope of the present invention is not limited to described content.
Embodiment 1:
Described in the present embodiment, the selective inhibitor that suppresses calcic gangue mineral in scheelite ore, is formed by following raw material hybrid reaction, and each raw material and percentage by weight thereof are: Pb (NO
3) 80%, Sodium Polyacrylate (molecular weight 8,000,000-1,000 ten thousand) 20%.
The inhibitor that the present embodiment prepares adds Jiangxi scheelite to and selects the scheelite after factory's pre-desulfurization to contain WO
30.55%, addition is 225g/t, after FLOTATION SEPARATION, obtains the separating resulting of table 1.
Table 1 Scheelite Flotation index
Embodiment 2:
Described in the present embodiment, the selective inhibitor that suppresses calcic gangue mineral in scheelite ore, is formed by following raw material hybrid reaction, and each raw material and percentage by weight thereof are: Pb (NO
3) 90%, polyacrylic acid 10%.
The inhibitor that the present embodiment prepares adds Certain District, Hunan low-grade scheelite ore to containing WO
30.39%, addition is 250g/t, after FLOTATION SEPARATION, obtains the separating resulting of table 2.
Table 2 Scheelite Flotation index
Embodiment 3:
Described in the present embodiment, the selective inhibitor that suppresses calcic gangue mineral in scheelite ore, is formed by following raw material hybrid reaction, and each raw material and percentage by weight thereof are: Pb (NO
3) 85%, CP5(acrylic acid-maleic acid) 15%.
The inhibitor that the present embodiment prepares adds Certain District, Hunan low-grade scheelite ore to containing WO
30.36%, addition is 260g/t, after FLOTATION SEPARATION, obtains the separating resulting of table 3.
Table 3 Scheelite Flotation index
Embodiment 4:
Described in the present embodiment, the selective inhibitor that suppresses calcic gangue mineral in scheelite ore, is formed by following raw material hybrid reaction, and each raw material and percentage by weight thereof are: Pb (NO
3) 87%, modified polycarboxylic acid 13%.
The inhibitor that the present embodiment prepares adds Certain District, Hunan low-grade scheelite ore to containing WO
30.37%, addition is 240g/t, after FLOTATION SEPARATION, obtains the separating resulting of table 4.
Table 4 Scheelite Flotation index
Embodiment 5:
Described in the present embodiment, the selective inhibitor that suppresses calcic gangue mineral in scheelite ore, is formed by following raw material hybrid reaction, and each raw material and percentage by weight thereof are: Pb (NO
3) 83%, phosphonate group polypropylene carboxylic acid 17%.
The inhibitor that the present embodiment prepares adds Certain District, Hunan low-grade scheelite ore to containing WO
30.36%, addition is 240g/t, after FLOTATION SEPARATION, obtains the separating resulting of table 5.
Table 5 Scheelite Flotation index
Table 1 to the test index in table 5 shows, adopts modifying depressants FLOTATION SEPARATION scheelite of the present invention, has reagent consumption low, and selectively good, it is good that centering low-grade ore has good adaptability, and FLOTATION SEPARATION index is good.
Embodiment 6(contrast test):
Described in the present embodiment, the selective inhibitor that suppresses calcic gangue mineral in scheelite ore is the conventional inhibitor waterglass of calcic gangue mineral.
The inhibitor that the present embodiment prepares adds Jiangxi scheelite to and selects the scheelite after factory's pre-desulfurization to contain WO
30.56%, addition is 2500g/t, after FLOTATION SEPARATION, obtains the separating resulting of table 6.
Table 6 Scheelite Flotation index
Claims (4)
1. a selective inhibitor that suppresses calcic gangue mineral in scheelite ore, it is characterized in that: described inhibitor is formed by following raw material hybrid reaction, and each raw material and percentage by weight thereof are: slaine 80% ~ 90%, polycarboxylic acids or polycarboxylate compounds 20% ~ 10%.
2. selectively suppress according to claim 1 the inhibitor of calcic gangue mineral in scheelite ore, it is characterized in that: described slaine is for containing Pb
2+nitrate.
3. selectively suppress according to claim 1 the inhibitor of calcic gangue mineral in scheelite ore, it is characterized in that: described polycarboxylic acids or polycarboxylate compounds are have-C0O
-polar group, polycarboxylic acids or polycarboxylate compounds that molecular weight is greater than 8,000,000.
4. selectively suppress according to claim 1 the inhibitor of calcic gangue mineral in scheelite ore, it is characterized in that: the consumption of inhibitor is 200～300g/t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197123.9A CN104001627B (en) | 2014-05-12 | 2014-05-12 | The inhibitor of calcic gangue mineral in a kind of Selective depression scheelite Ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197123.9A CN104001627B (en) | 2014-05-12 | 2014-05-12 | The inhibitor of calcic gangue mineral in a kind of Selective depression scheelite Ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104001627A true CN104001627A (en) | 2014-08-27 |
| CN104001627B CN104001627B (en) | 2016-09-14 |
Family
ID=51362700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410197123.9A Expired - Fee Related CN104001627B (en) | 2014-05-12 | 2014-05-12 | The inhibitor of calcic gangue mineral in a kind of Selective depression scheelite Ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104001627B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214849A (en) * | 2015-11-02 | 2016-01-06 | 中南大学 | A kind of beneficiation method improving scheelite concentration process concentrate grade |
| CN107185724A (en) * | 2017-08-02 | 2017-09-22 | 白银金锑矿贸有限公司 | A kind of method for floating that gold sulphide ores are reclaimed from tailings |
| CN108043590A (en) * | 2017-11-23 | 2018-05-18 | 北京有色金属研究总院 | A kind of preparation method of calcite mineral inhibitor |
| CN109174466A (en) * | 2018-09-05 | 2019-01-11 | 中南大学 | The inhibitor and its preparation method and application of calcic gangue in a kind of Scheelite Flotation |
| CN110227609A (en) * | 2019-04-23 | 2019-09-13 | 中南大学 | A kind of nano metal-organic carboxyl acid complex colloid collecting agent and its preparation and the application as metalliferous mineral flotation collector |
| CN111068925A (en) * | 2019-12-23 | 2020-04-28 | 中南大学 | Application of 2- (3-substituted ureido) -N-hydroxy-2-oxyacetonitride cyanide compounds in flotation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821370A (en) * | 2007-10-12 | 2010-09-01 | 巴斯夫欧洲公司 | Dishwashing formulation comprising mixture of hydrophobically modified polycarboxylates and hydrophilically modified polycarboxylates |
| CN102105229A (en) * | 2008-07-25 | 2011-06-22 | 塞特克技术公司 | Flotation reagents and flotation processes utilizing same |
| CN102489407A (en) * | 2011-11-30 | 2012-06-13 | 长沙矿冶研究院有限责任公司 | Mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings |
-
2014
- 2014-05-12 CN CN201410197123.9A patent/CN104001627B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821370A (en) * | 2007-10-12 | 2010-09-01 | 巴斯夫欧洲公司 | Dishwashing formulation comprising mixture of hydrophobically modified polycarboxylates and hydrophilically modified polycarboxylates |
| CN102105229A (en) * | 2008-07-25 | 2011-06-22 | 塞特克技术公司 | Flotation reagents and flotation processes utilizing same |
| CN102489407A (en) * | 2011-11-30 | 2012-06-13 | 长沙矿冶研究院有限责任公司 | Mineral processing method for recycling scheelite/molybdenum oxide ores from molybdenum sulfide flotation tailings |
Non-Patent Citations (2)
| Title |
|---|
| 朱玉霜等: "金属阳离子活化黑钨矿泥的作用机理", 《中国矿冶学院学报》, vol. 23, no. 5, 31 October 1992 (1992-10-31) * |
| 李顺等: "分子量及其分布对聚羧酸减水剂吸附行为的影响", 《硅酸盐学报》, vol. 39, no. 1, 31 January 2011 (2011-01-31), pages 84 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214849A (en) * | 2015-11-02 | 2016-01-06 | 中南大学 | A kind of beneficiation method improving scheelite concentration process concentrate grade |
| CN107185724A (en) * | 2017-08-02 | 2017-09-22 | 白银金锑矿贸有限公司 | A kind of method for floating that gold sulphide ores are reclaimed from tailings |
| CN108043590A (en) * | 2017-11-23 | 2018-05-18 | 北京有色金属研究总院 | A kind of preparation method of calcite mineral inhibitor |
| CN109174466A (en) * | 2018-09-05 | 2019-01-11 | 中南大学 | The inhibitor and its preparation method and application of calcic gangue in a kind of Scheelite Flotation |
| CN110227609A (en) * | 2019-04-23 | 2019-09-13 | 中南大学 | A kind of nano metal-organic carboxyl acid complex colloid collecting agent and its preparation and the application as metalliferous mineral flotation collector |
| CN111068925A (en) * | 2019-12-23 | 2020-04-28 | 中南大学 | Application of 2- (3-substituted ureido) -N-hydroxy-2-oxyacetonitride cyanide compounds in flotation |
| CN111068925B (en) * | 2019-12-23 | 2020-10-16 | 中南大学 | Application of 2- (3-substituted ureido) -N-hydroxy-2-oxyacetonitride cyanide compounds in flotation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104001627B (en) | 2016-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104001627A (en) | Inhibiting agent capable of selectively inhibiting calcium-containing gangue minerals in scheelite ores | |
| CN105149100B (en) | A kind of method that barite is reclaimed from Pb-Zn tailings | |
| CN106396592B (en) | A kind of preparation method of the mine cemented filling material of resource utilization hazardous waste containing cadmium | |
| CN108043589B (en) | Application of polyaspartic acid in fluorite ore flotation | |
| CN102319633A (en) | A kind of method for floating of phosphogypsum slag | |
| CN106076656B (en) | A kind of modified carboxy methyl cellulose base mineral floating inhibitor, preparation method and its application method | |
| CN104117432A (en) | Magnetic seed floatation method | |
| CN109482360B (en) | Mineral processing technology of rare earth, fluorite and barite associated ore | |
| CN111438001A (en) | Method for flotation separation of iron oxide ore in cassiterite sulphide ore mud ore by using combined inhibitor | |
| CN108516707B (en) | Ionic curing agent and red mud fly ash cementing material | |
| CN104745833B (en) | A kind of handling process for high golden paint ore | |
| JP2014050841A (en) | Water treatment method | |
| CN102631993A (en) | Method for flotation of copper sulphide ore | |
| CN104785377A (en) | Preparation method for tennantite inhibitor | |
| CN105195334B (en) | Magnesium-rich silicate mineral flotation inhibitor and preparation method and application thereof | |
| CN107115972B (en) | The method that golden copper and solidification processing are recycled in flotation tailing | |
| CN105149102A (en) | High-sulfur bauxite desulfuration flotation activating agent and desulfuration method | |
| CN112934473B (en) | Application of copper-nickel sulfide ore flotation inhibitor in copper-nickel sulfide ore flotation | |
| CN106733204B (en) | Efficient flotation separation combination medicament and its method for decalcification pre- in fluorite | |
| CN101871047B (en) | Method for reclaiming germanium from organic germanium waste liquid | |
| CN108940601A (en) | The purposes and application method of amino disuccinic acid or iminobisuccinate | |
| CN110369149A (en) | Pyrite inhibitor and preparation method thereof in a kind of lead sulfide mixed concentrate | |
| CN104437888A (en) | Method for preparing zinc-sulfur mineral depressor | |
| CN104941814B (en) | The preparation method of the supplementary catching agent of recovery of gold and silver in a kind of raising tennantite | |
| CN105344491B (en) | A kind of preparation method of Sb-Au ore thing collecting agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20210512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |