CN102886306A - Column-slot combined technology for grading calcium collophanite - Google Patents
Column-slot combined technology for grading calcium collophanite Download PDFInfo
- Publication number
- CN102886306A CN102886306A CN201210247327XA CN201210247327A CN102886306A CN 102886306 A CN102886306 A CN 102886306A CN 201210247327X A CN201210247327X A CN 201210247327XA CN 201210247327 A CN201210247327 A CN 201210247327A CN 102886306 A CN102886306 A CN 102886306A
- Authority
- CN
- China
- Prior art keywords
- flotation
- ore
- collophane
- column
- calcareous
- 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
Images
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a column-slot combined technology for grading calcium collophanite,. The column-slot combined technology relates to a beneficiation method for removing carbonate impurities from the calcium collophanite by a reverse flotation manner, and comprises the following steps of (1), crushing and grinding collophanite containing the carbonate impurities, fully dissociating the collophanite and the carbonate impurities, and controlling size mixing concentration; (2), introducing ore pulp to a stirring slot; adding a ore pulp inhibitor (sulfuric acid and phosphoric acid), controlling a pH value of the ore pulp; adding a collecting agent; enabling uniformly-mineralized ore pulp to enter a flotation column, wherein foams of the flotation column are rougher tailings; bottom flow of the flotation column is rougher concentrate; (3), enabling the rougher concentrate to flow into a selection stirring slot; adding an inhibitor (the sulfuric acid), controlling the pH value of the ore pulp to be 4.0-4.5; adding the collecting agent, enabling the uniformly-mineralized ore pulp to enter a 130M<3> flotation machine; performing pneumatic flotation; finally, obtaining foam products, namely, the carbonate impurities, wherein a product in the slot is a high-grade phosphate concentrate product.
Description
Technical field
The present invention relates to the beneficiation method that a kind of calcareous collophane adopts reverse flotation to deviate from its carbonate impurity.
Background technology
High speed development along with Phosphate Fertilizer Industry, the exploitation of phosphorus ore and consumption also sharply rise, the overall grade of phosphorus ore descends day by day, causes that impurity component becomes more and more complicated in the phosphoric acid, and exploitation mid low grade phosphate rock stone has become the task of top priority, for in low grade calcareous collophane, as long as impurity is carbonate impurity, the single reverse flotation flowsheet of main employing removes carbonate impurity at present, be enriched with and use the ore deposit, relatively simple in collophane sorts.The flotation device that traditional preparation equipment adopts, flotation device exists floor space large, the problems such as energy consumption height; Although it is little that flotation column has floor space, low power consumption and other advantages for the floatation process that thick smart flowage structure combines, adopts the post post to unite use, also has following drawback:
The relative volume of 1 flotation column is larger, and the flotation effect cycle period is long, and especially start is front two, three hours; pulp density is low in the post, and effect is just stable after two or three hours, shuts down also all emptying ore pulp; be replaced as clear water, affect next normal boot-strap to avoid charge valve to stop up.
2 because the flotation column height is relatively high, post post flotation process, and the chats circulation needs to adopt pump to carry, and has both consumed energy
Amount, in actual mechanical process, the reasons such as Chang Yinwei fouling, or cause the pump line clogging, produce thereby impact is normal.
Summary of the invention
Purpose of the present invention only is to overcome the defective of prior art, provide a kind of technological process flexibly, be easy to regulation and control, equipment is few, energy consumption is low sorts calcareous collophane post groove process integration.
A kind of calcareous collophane post groove process integration that sorts of the present invention,
Calcareous collophaneMajor impurity is carbonate impurity, and valuable mineral is phosphate mineral, rejects carbonate impurity enriched phosphate mineral in the ore dressing process, and its step is as follows:
(1) with collophane crushing raw ore, the ore grinding of carbonate containing impurity, levigately be-0.074mm 90～95%, phosphorus ore thing and carbonate impurity are fully dissociated, the control concentration of sizing mixing is 28～33wt%;
(2) ore pulp is introduced in the tank diameter, added ore pulp inhibitor sulfuric acid, phosphoric acid, it is 3.7～4.2 that pH values of pulp is controlled at, add again collecting agent YP2-3, the uniform ore pulp of mineralising enters in the flotation column of 4.5 * 10m, and the foam of flotation column is exactly rougher tailings, and the underflow of flotation column is for roughly selecting concentrate;
(3) the above-mentioned concentrate of roughly selecting is flowed in the selected tank diameter certainly, add inhibitor sulfuric acid, pH values of pulp is controlled at is 4.0～4.5, adds collecting agent again, the uniform ore pulp of mineralising enters 130M
3Flotation device in, carry out air flotation, froth pulp is carbonate impurity, product is high grade phosphorus concentrate product in the groove.
Describedly sort calcareous collophane post groove process integration, in acid medium, adopt single reverse flotation imurity-removal to be enriched with and use the ore deposit.
Describedly sort calcareous collophane post groove process integration, the proportion by subtraction of raw ore composition is: O
520.0～24.00%, MgO 4.5～6.5%, thick smart P
2O
5〉=28.5%, MgO≤1.5%, selected concentrate P
2O
529.0～30.5%, MgO≤0.8%, productive rate 65.0～68%, the rate of recovery 84.0～90.0%:
It is to adopt four Washdown type 4.5 * 10 M flotation columns in parallel that described single reverse flotation imurity-removal is enriched with the ore deposit, anti-floating four 130M of selected employing
3The flotation device series connection.
The described flotation column of step (2) is the Washdown type flotation column, roughly selects interpolation sulfuric acid: 16.00～21Kg/t, phosphoric acid: 4.0～5.0 Kg/t, collecting agent 1.0～3.0 Kg/t.
The described flotation of step (3) seat in the plane 130M
3Flotation device, selected interpolation sulfuric acid: 3.0～6.0Kg/t, collecting agent: 1.0～1.5 Kg/t.
Post groove flotation process of the present invention can effectively utilize the advantage of two kinds of equipment, avoids the shortcoming of two kinds of equipment, thereby reaches the desirable combination of two kinds of equipment, and the maximum efficiency of performance equipment reaches energy-saving and cost-reducing purpose.The present invention adopts post groove combined process flow, anti-floating roughly selecting adopted flotation column, anti-floating selected employing flotation device or flotation cell, be characterized in: the novel energy-saving flotation column, the in parallel use, reach abundant raising and sort the high purpose of efficient, the precision sorting flotation machine series connection is used, and prolongs flotation time, be conducive to improve concentrate grade, reduce reagent consumption; Take full advantage of the natural height of two kinds of equipment, flotation flowsheet adopts the gravity flow configuration, saved middle circulating pump, ore pulp delivery duct and operating platform, saved investment and operation cost, circulating pump obstruction, fouling etc. are on the impact of floatation process continuity running in the middle of also reducing simultaneously; Technological process flexibly, be easy to regulation and control, one or two flotation columns have problem, can switch to other flotation column to ore pulp, whole technological process normally moves.Avoid single device by fault, the drawback that whole process is shut down; Equipment is few, energy consumption is low: process on year-on-year basis identical sample ore, identical treating capacity, with 2,000,000 ton/years of raw ores notes, the every concentrate index of gained is close, entirely adopts flotation device, needs 30M
332 in flotation device, the floating workshop section of mill general power is 8292 KWh; Adopt post groove flotation process, 4 of the flotation columns of needs 4.5 * 10 M, 130M
34 in flotation device, it is 5231 KWh that the floating workshop section of mill selects general power.
The characteristics that calcareous collophane of the present invention sorts are:
The characteristics of the calcareous collophane of a: the major impurity of calcareous collophane is carbonate (MgO), the single reverse flotation of main employing removes carbonate impurity at present, is enriched with the purpose of using the ore deposit thereby reach removal of impurities, and flotation froth is impurity, product is concentrate in the groove, according at present selected head grade P
20
520.0～24.0%, MgO 4.5～6.5%, when concentrate grade about 29.0～30.5%, MgO≤0.8%, concentrate yield 〉=65% meets and presses down many floating few flotation principles, it is relatively simple that the collophane of comparing other type sorts flow process;
B is thin in conjunction with the collophane feed particle size, and the problem that relative viscosity is large adopts the floating post of novel Washdown type of voluntarily development, at airing form, done improvement for ore deposit mode, ratio of height to diameter etc.; When originally 2 enter the ore deposit, the ore pulp diffusion reaches the long distance of even needs, 2 change multiple spot into to the ore deposit to the ore deposit, and the outlet of ore feeder is improved to upwards gushes out, so that ore pulp homodisperse time shorten in post, reduce the height of flotation column, reduced to 10 meters from intrinsic 12 meters, saved factory building height.The in addition reduction of ratio of height to diameter has overcome that the flotation column ratio of height to diameter was large in the past, is unfavorable for the problem installing, dismantle, and multiple spot promotes also that to the ore deposit ore pulp evenly distributes, and is conducive to improve flotation effect;
C processes calcareous collophane with new technology, new equipment, can reach energy-saving and cost-reducing purpose..
The invention has the beneficial effects as followsRealized new technology, new equipment in the commercial application that calcareous collophane sorts, roughly selected, selected operation realizes that gravity flow carries, construction investment expense that can the decrease suitability for industrialized production; The flotation device consumption is few on year-on-year basis, and reagent consumption is low, and index is good; Reach energy-saving and cost-reducing purpose; Secondly this technological process is simple to operate, and equipment maintenance is convenient, greatly cuts operating costs.
Description of drawings
Fig. 1 is flow chart and equipment contact figure.
Fig. 2 is post groove flotation process figure.
The specific embodiment
The present invention is further illustrated below in conjunction with embodiment, and in an embodiment, except special instruction is arranged, all percentage compositions are mass percent.
Embodiment 1
Calcareous collophane mining area, Yunnan sample ore according to the above-mentioned process program of the present invention, at normal temperature, adds YP4:20.60Kg/t, YP3:4.5 Kg/t, YP2-3:3.0 Kg/t, anti-floating selected employing 130M
3Flotation device, selected interpolation YP4:5.5Kg/t, YP2-3:1.5 Kg/t; Can obtain following index, raw ore P
2O
5Content 22.0wt%, MgO content 5.40wt%, concentrate P
2O
5Content 30.10wt%, MgO content 0.80wt%
,Productive rate 61.61%
,The rate of recovery 84.30%, demagnesium rate 90.87%.
Embodiment 2
Certain calcareous collophane mining area sample ore according to the above-mentioned process program of the present invention, at normal temperature, adds YP4:19.45Kg/t, YP3:4.0 Kg/t, YP2-3:2.5Kg/t, anti-floating selected employing 130M
3Flotation device, selected interpolation YP4:5.0Kg/t, YP2-3:1.3 Kg/t; Can obtain following index, raw ore P
2O
5Content 24.0wt%, MgO content 4.50wt%, concentrate P
2O
5Content 30.50wt%, MgO content 0.74wt%
,Productive rate 68.60%
,The rate of recovery 87.18%, demagnesium rate 88.72%.
Embodiment 3
Certain calcareous collophane mining area sample ore according to the above-mentioned process program of the present invention, at normal temperature, adds YP4:25.45Kg/t, YP3:4.8 Kg/t, YP2-3:3.0Kg/t, anti-floating selected employing 130M
3Flotation device, selected interpolation YP4:6.5Kg/t, YP2-3:1.8 Kg/t; Can obtain following index, raw ore P
2O
5Content 20.15wt%, MgO content 6.13wt%, concentrate P
2O
5Content 29.64wt%, MgO content 0.65wt%
,Productive rate 55.84%
,The rate of recovery 82.14%, demagnesium rate 94.08%.
Claims (6)
1. one kind sorts calcareous collophane post groove process integration, described
Calcareous collophaneMajor impurity is carbonate impurity, and valuable mineral is phosphate mineral, rejects carbonate impurity enriched phosphate mineral in the ore dressing process, it is characterized in that, its step is as follows:
(1) with collophane crushing raw ore, the ore grinding of carbonate containing impurity, levigately be-0.074mm 90～95%, phosphorus ore thing and carbonate impurity are fully dissociated, the control concentration of sizing mixing is 28～33wt%;
(2) ore pulp is introduced in the tank diameter, added ore pulp inhibitor sulfuric acid, phosphoric acid, it is 3.7～4.2 that pH values of pulp is controlled at, add again collecting agent, the uniform ore pulp of mineralising enters in the flotation column of 4.5 * 10m, and the foam of flotation column is exactly rougher tailings, and the underflow of flotation column is for roughly selecting concentrate;
(3) the above-mentioned concentrate of roughly selecting is flowed in the selected tank diameter certainly, add inhibitor sulfuric acid, pH values of pulp is controlled at is 4.0～4.5, adds collecting agent again, the uniform ore pulp of mineralising enters 130M
3Flotation device in, carry out air flotation, froth pulp is carbonate impurity, product is high grade phosphorus concentrate product in the groove.
2. sort calcareous collophane post groove process integration by claimed in claim 1, it is characterized in that, in acid medium, adopt single reverse flotation imurity-removal to be enriched with and use the ore deposit.
3. sort calcareous collophane post groove process integration by claimed in claim 1, it is characterized in that, the proportion by subtraction of raw ore composition is: O
520.0～24.00%, MgO 4.5～6.5%, thick smart P
2O
5〉=28.5%, MgO≤1.5%, selected concentrate P
2O
529.0～30.5%, MgO≤0.8%, productive rate 65.0～68%, the rate of recovery 84.0～90.0%.
4. sort calcareous collophane post groove process integration by what claim 2 was stated, it is characterized in that, it is to adopt four Washdown type 4.5 * 10 M flotation columns in parallel that single reverse flotation imurity-removal is enriched with the ore deposit, anti-floating four 130M of selected employing
3The flotation device series connection.
5. sort calcareous collophane post groove process integration by claimed in claim 1, it is characterized in that, the described flotation column of step (2) is the Washdown type flotation column, roughly selects interpolation sulfuric acid: 16.00～21Kg/t, phosphoric acid: 4.0～5.0 Kg/t, collecting agent 1.0～3.0 Kg/t.
6. sort calcareous collophane post groove process integration by claimed in claim 1, it is characterized in that the described flotation of step (3) seat in the plane 130M
3Flotation device, selected interpolation sulfuric acid: 3.0～6.0Kg/t, collecting agent: 1.0～1.5 Kg/t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210247327.XA CN102886306B (en) | 2012-07-18 | 2012-07-18 | Column-slot combined technology for grading calcium collophanite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210247327.XA CN102886306B (en) | 2012-07-18 | 2012-07-18 | Column-slot combined technology for grading calcium collophanite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102886306A true CN102886306A (en) | 2013-01-23 |
| CN102886306B CN102886306B (en) | 2015-07-15 |
Family
ID=47530104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210247327.XA Active CN102886306B (en) | 2012-07-18 | 2012-07-18 | Column-slot combined technology for grading calcium collophanite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102886306B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056036A (en) * | 2013-01-25 | 2013-04-24 | 中国地质科学院矿产综合利用研究所 | Collophanite normal-temperature direct flotation collecting agent and preparation method thereof |
| CN103551257A (en) * | 2013-11-25 | 2014-02-05 | 四川省地质矿产勘查开发局成都综合岩矿测试中心 | Phosphorite reverse flotation process |
| CN103934114A (en) * | 2014-04-22 | 2014-07-23 | 甘肃瓮福化工有限责任公司 | Beneficiation method for medium-low-grade phosphate ores |
| CN104174504A (en) * | 2014-07-16 | 2014-12-03 | 云南磷化集团有限公司 | Direct-flotation branching floatation method of low-and-medium-grade mixed type refractory collophane |
| CN105728177A (en) * | 2016-03-10 | 2016-07-06 | 湖北大峪口化工有限责任公司 | Leaching-reverse flotation method of collophanite |
| CN105750089A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Magnesian collophanite separation method |
| CN107890955A (en) * | 2017-11-06 | 2018-04-10 | 云南磷化集团有限公司 | A kind of and supporting short route method for floating of chemical plant installations |
| CN110455781A (en) * | 2019-08-26 | 2019-11-15 | 云南磷化集团有限公司 | For the LIBS on-line detecting system of flotation of phosphate rock system and its application |
| CN111135947A (en) * | 2020-01-03 | 2020-05-12 | 云南磷化集团有限公司 | Collophanite flotation tailing treatment process |
| CN111659549A (en) * | 2020-06-09 | 2020-09-15 | 云南云天化红磷化工有限公司 | Method for grading and utilizing reverse flotation phosphate concentrate pulp |
| CN112403666A (en) * | 2020-10-30 | 2021-02-26 | 云南磷化集团有限公司 | Flotation process flow configuration method for refractory collophanite |
| CN112517231A (en) * | 2020-11-18 | 2021-03-19 | 云南磷化集团有限公司 | Flotation method for low-grade carbonate collophanite |
| CN113019683A (en) * | 2021-03-11 | 2021-06-25 | 云南磷化集团有限公司 | Treatment method of mixed low-grade collophanite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910253A (en) * | 1996-11-18 | 1999-06-08 | The Board Of Regents Of The University And Community College System Of Nevada | Removal of metal ions from aqueous solution |
| CN1806931A (en) * | 2006-01-27 | 2006-07-26 | 湖北宜化大江复合肥有限公司 | Mineral dressing method of mid-low grade collophane |
| CN101020159A (en) * | 2007-03-20 | 2007-08-22 | 武汉工程大学 | Phosphate rock floating process |
| CN101099946A (en) * | 2007-07-13 | 2008-01-09 | 云南省化工研究院 | Collophanite floatation method |
| CN202061717U (en) * | 2011-01-07 | 2011-12-07 | 中国海洋石油总公司 | Collophane double-column floatation device |
-
2012
- 2012-07-18 CN CN201210247327.XA patent/CN102886306B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910253A (en) * | 1996-11-18 | 1999-06-08 | The Board Of Regents Of The University And Community College System Of Nevada | Removal of metal ions from aqueous solution |
| CN1806931A (en) * | 2006-01-27 | 2006-07-26 | 湖北宜化大江复合肥有限公司 | Mineral dressing method of mid-low grade collophane |
| CN101020159A (en) * | 2007-03-20 | 2007-08-22 | 武汉工程大学 | Phosphate rock floating process |
| CN101099946A (en) * | 2007-07-13 | 2008-01-09 | 云南省化工研究院 | Collophanite floatation method |
| CN202061717U (en) * | 2011-01-07 | 2011-12-07 | 中国海洋石油总公司 | Collophane double-column floatation device |
Non-Patent Citations (1)
| Title |
|---|
| 王大鹏等: "中低品位胶磷矿柱式反浮选试验研究", 《中南大学学报（自然科学版）》, vol. 42, no. 12, 31 December 2011 (2011-12-31) * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056036A (en) * | 2013-01-25 | 2013-04-24 | 中国地质科学院矿产综合利用研究所 | Collophanite normal-temperature direct flotation collecting agent and preparation method thereof |
| CN103056036B (en) * | 2013-01-25 | 2014-04-23 | 中国地质科学院矿产综合利用研究所 | Preparation method of collophanite normal-temperature direct flotation collecting agent |
| CN103551257A (en) * | 2013-11-25 | 2014-02-05 | 四川省地质矿产勘查开发局成都综合岩矿测试中心 | Phosphorite reverse flotation process |
| CN103934114A (en) * | 2014-04-22 | 2014-07-23 | 甘肃瓮福化工有限责任公司 | Beneficiation method for medium-low-grade phosphate ores |
| CN104174504A (en) * | 2014-07-16 | 2014-12-03 | 云南磷化集团有限公司 | Direct-flotation branching floatation method of low-and-medium-grade mixed type refractory collophane |
| CN105728177A (en) * | 2016-03-10 | 2016-07-06 | 湖北大峪口化工有限责任公司 | Leaching-reverse flotation method of collophanite |
| CN105750089A (en) * | 2016-05-09 | 2016-07-13 | 武汉科技大学 | Magnesian collophanite separation method |
| CN107890955A (en) * | 2017-11-06 | 2018-04-10 | 云南磷化集团有限公司 | A kind of and supporting short route method for floating of chemical plant installations |
| CN110455781A (en) * | 2019-08-26 | 2019-11-15 | 云南磷化集团有限公司 | For the LIBS on-line detecting system of flotation of phosphate rock system and its application |
| CN111135947A (en) * | 2020-01-03 | 2020-05-12 | 云南磷化集团有限公司 | Collophanite flotation tailing treatment process |
| CN111659549A (en) * | 2020-06-09 | 2020-09-15 | 云南云天化红磷化工有限公司 | Method for grading and utilizing reverse flotation phosphate concentrate pulp |
| CN112403666A (en) * | 2020-10-30 | 2021-02-26 | 云南磷化集团有限公司 | Flotation process flow configuration method for refractory collophanite |
| CN112517231A (en) * | 2020-11-18 | 2021-03-19 | 云南磷化集团有限公司 | Flotation method for low-grade carbonate collophanite |
| CN113019683A (en) * | 2021-03-11 | 2021-06-25 | 云南磷化集团有限公司 | Treatment method of mixed low-grade collophanite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102886306B (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102886306B (en) | Column-slot combined technology for grading calcium collophanite | |
| CN1322934C (en) | Collophanite direct flotation and reverse flotation technique | |
| CN100522374C (en) | Mineral dressing method of mid-low grade collophane | |
| CN102179308B (en) | Oredressing method for removing sesquioxide of iron and aluminum | |
| CN101099946A (en) | Collophanite floatation method | |
| CN101491789B (en) | Beneficiation process of mixed dregs using three copper smelting methods of flash smelting furnace, revolving furnace and depletion electric furnace | |
| CN100542679C (en) | A kind of method of demagging from phosphate ore | |
| CN101856634B (en) | Iron-increasing and silicon-reduction mineral separation method for iron ores | |
| CN107398344A (en) | Miscellaneous ore-dressing technique drops in a kind of high-sulfur Complex iron ore upgrading | |
| CN101371998A (en) | Flotation method of low ore grade manganous carbonate ore | |
| CN101423203B (en) | Water-saving and emission-reducing wet method phosphoric acid manufacture process | |
| CN105750089B (en) | A kind of magnesia collophane method for separating | |
| CN104815736A (en) | Preselecting process for surrounding rock containing magnetite | |
| CN107398345A (en) | A kind of high-sulfur Complex iron ore ore-dressing technique | |
| CN102744153A (en) | Flotation process for phosphorus ore of calcium silicon phosphorus rock | |
| CN203425922U (en) | Lead ore flotation system | |
| CN103909008B (en) | A kind of ore dressing group technology reclaiming sulfur ferrum from Pb-Zn tailings | |
| CN101693226B (en) | Desliming method of high-talcose type nickel ore in mineral processing | |
| CN101972711B (en) | Flotation process for charcoal clay-containing pyrite | |
| CN101844106B (en) | Combined and staged separation method for weathered phosphoric ore | |
| CN202921427U (en) | Flotation recycling gold and sliver device from zinc smelting acid leaching dregs | |
| CN103639067A (en) | Special foam maker for direct-impact type flotation column without circulating pump | |
| CN104801425B (en) | A kind of phosphorus ore is classified many grade floatation process of dosing in batches | |
| CN105013617A (en) | Collophanite dressing technology | |
| CN201329313Y (en) | Copper-sulphur ore floatation system |
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 |