CN106040421A - Steam coal quality control method - Google Patents
Steam coal quality control method Download PDFInfo
- Publication number
- CN106040421A CN106040421A CN201610569297.2A CN201610569297A CN106040421A CN 106040421 A CN106040421 A CN 106040421A CN 201610569297 A CN201610569297 A CN 201610569297A CN 106040421 A CN106040421 A CN 106040421A
- Authority
- CN
- China
- Prior art keywords
- coal
- raw coal
- quality control
- raw
- quality
- 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
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
Abstract
The invention discloses a steam coal quality control method. At first, raw coal is screened in a 6mm-depth manner; a dense-medium shallow slot is adopted for separating raw coal blocks of 200-13 mm or 200-17 mm; slack raw coal of 13-6 mm or 17-6 mm is separated; powdered coal smaller than 6 mm enters a bypass; a sieve bend, a high-frequency sieve and a coal slime centrifuge are adopted for recycling coarse slime of 1.5-0.25 mm in a dehydrating manner; and for fine coal slime smaller than 0.25 mm, after two-stage concentration, a sieve sedimentation type centrifuge and a plate-and-frame filter press are adopted for carrying out joint recycling. The method is used for regulating and controlling the quality of the Selian two-mine steam coal, when the heating amount of the raw coal is larger than 3600 kcal/kg, the powdered coal falling to the ground is returned to a coal dressing system, and after the power consumption cost, the labor cost and the like are deducted, the profit of one ton of powdered coal is 30 yuan. When the quality of the raw coal fluctuates more greatly, the quality of products produced through the steam coal quality control method can meet the requirement (the heating amount of 4400 kcal/kg) of users all the time, the system adaptability is high, and the stability of the product quality is good.
Description
Technical field
The present invention relates to a kind of raw coal quality control method, in particular a kind of thermal coal method of quality control.
Background technology
Color connects two ore deposits and is positioned at mining area, Erdos Gao Touyao, coal based on non caking coal, a small amount of jet coal, belong to low rotten
Degree, young bituminous coal.Owing to degree of coalification is low, porosity and specific surface area are big, and oxygen content of coal carbon ratio (O/C) is big, hydrophilic polar
Functional group is many, causes raw coal moisture content higher.Since color connects two ore deposit trial productions, raw coal quality wide fluctuations, the raw coal when of good
Ash 22.8%, total moisture 26.47%, caloric value 3910kcal/kg.Ash 45.81%, total moisture when raw coal quality is bad
24.3%, caloric value 2760kcal/kg.
Hydrogenous coal has two features: one: viscosity is big, high humidity, easily causes that tradition is screen plugging, screening efficiency is low
Under, cause increasing into water slime content；Two: show water absorption, after coal enters water, moisture is greatly improved, the particulate big to specific surface area
Level raw coal, the moisture that coal increases after entering water is bigger on the impact of caloric value than the ash reduced after washing, and sending out occurs in part granularity
Heat negative growth.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of thermal coal method of quality control, it is achieved
Regulate and control to obtain stay-in-grade product to the raw coal of different quality.
The present invention is achieved by the following technical solutions, and the present invention comprises the following steps:
(1) first raw coal is carried out 6mm deep screening；
(2) the block raw coal to 200～13mm or 200～17mm uses dense-medium shallow-tank sorting；
(3) the last raw coal separation to 13～6mm or 17～6mm；
(4) for entering bypass less than 6mm fine coal；
(5) sieve bend, high-frequency screen and coal slime centrifuge dehydration is used to reclaim for 1.5～0.25mm coarse slimes；
(6) for the fine coal slurry less than 0.25mm through two sections of concentrations, screen cloth sedimentation-type centrifuge and filter press are used
Combined recovery.
The deep screening of described step (1) is: as raw coal caloric value ＜ 3400kcal/kg, make more than 6mm powder in raw coal
Coal enters and carries out washing in washing system, and the specific gravity of separation reducing lump coal Dense-medium system is 1.5g/cm3, smalls Dense-medium system
The specific gravity of separation is 1.4g/cm3, it is ensured that product calorific value of coal is stable at 4400kcal/kg, by unnecessary fine coal independent warehouse entry storage
Deposit.
As raw coal caloric value ＜ 3400kcal/kg, respectively raw coal scalping sieve screen size is adjusted to 13mm, relaxes
Open sieve screen size and be adjusted to 6mm, reduce the content of siftage, it is achieved in raw coal, more than 6mm fine coal enters in entering washing system
Row washing.
The deep screening of described step (1) is: when raw coal caloric value is in 3400～3800kcal/kg, by lump coal separation
Proportion is transferred to 1.6g/cm3, the smalls specific gravity of separation is transferred to 1.5g/cm3So that constant product quality is at 4400kcal/kg.
When raw coal caloric value is in 3400～3800kcal/kg, by 50% raw coal scalping sieve screen size by
13mm is adjusted to 25mm, and flip flop screen screen size is adjusted to 13mm by 6mm.
When raw coal caloric value is in 3400～3800kcal/kg, keeping raw coal scalping sieve sieve aperture is 13mm and tension and relaxation
Sieve screen size is that 6mm is constant.
The deep screening of described step (1) is: as raw coal caloric value ＞ 3800kcal/kg, by lump coal separation than resetting
To 1.7g/cm3, the smalls specific gravity of separation is transferred to 1.6g/cm3So that constant product quality is at 4400kcal/kg.
As raw coal caloric value ＞ 3800kcal/kg, raw coal scalping sieve sieve aperture is adjusted to 25mm, tension and relaxation by 13mm
Sieve sieve aperture is adjusted to 25mm by 13mm, during smalls is directly entered product simultaneously.
One of optimal way as the present invention, in described step (1), deep screening uses guest to obtain flip flop screen or auspicious relaxation difficult to understand
Open sieve.
One of optimal way as the present invention, in described step (3), uses and has pressure two product dense medium cyclone to carry out point
Choosing.
In coal preparation technique, apply deep screening technology, screening fine coal out is rationally mixed and joins, work as raw coal quality
Time poor, fine coal is selected to mix the quantity of product, by unnecessary fine coal bypass storage, because fine coal has, ash is big, moisture big,
The physical characteristic of granularity≤6mm, is easy to store so it is difficult to spontaneous combustion；When raw coal quality is good, then fine coal is returned the system of mixing
In, user requires (caloric value 4400kcal/kg) and keeps stable to make product quality disclosure satisfy that all the time, again using fine coal as
Product realizes selling.
The present invention has the advantage that the method Lian Erkuang that checks colors using the present invention regulates and controls compared to existing technology, former
Ature of coal amount has taken a turn for the better, and the fine coal that will land returns Recognition Applied in Coal Preparation System, rejects power consumption, the expense such as artificial, and one ton of fine coal profit is 30 yuan.
Single mixed coal product can be produced；Can also be yielded products of quality (4800kcal/kg) and mixed coal product；Mixed coal can also be produced
With 6mm fine coal product；Filter-pressing coal slime.When raw coal quality fluctuation is bigger, the product quality produced disclosure satisfy that user all the time
Requiring (caloric value 4400kcal/kg), system suitability is relatively strong, and constant product quality is preferable.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following enforcement
Example.
The ore-dressing technique of the present embodiment is as follows:
It is 10.0Mt/a that the color of the present embodiment connects two ore deposit Design for Coal Preparation Plant abilities, first to raw coal 6mm deep screening；To 200
～the block raw coal of 13mm or 200～17mm uses dense-medium shallow-tank sorting；Last raw coal to 13～6mm or 17～6mm uses pressure
Two product dense medium cyclone sort；For entering bypass less than 6mm fine coal；Arc is used for 1.5～0.25mm coarse slimes
Shape sieve, high-frequency screen and coal slime centrifuge dehydration are reclaimed；For the fine coal slurry less than 0.25mm through two sections of concentrations, use screen cloth sedimentation
Formula centrifuge and filter press combined recovery.
According to the difference of raw coal caloric value, the method for concrete deep screening is as follows:
(1) as raw coal caloric value ＜ 3400kcal/kg, respectively raw coal scalping sieve screen size is adjusted to
13mm, flip flop screen screen size is adjusted to 6mm, reduces the content of siftage, makes the above fine coal of raw coal 6mm enter washing system as far as possible
Carrying out washing in system, increase block, end enter the amount of washing, reduce coal amount, and the specific gravity of separation secondly reducing lump coal Dense-medium system is transferred to
1.5g/cm3Left and right, the specific gravity of separation of smalls Dense-medium system is transferred to 1.4g/cm3Left and right, it is ensured that product calorific value of coal is stablized
4400kcal/kg, stores the unnecessary independent warehouse entry of fine coal.
(2) when raw coal caloric value is in 3400～3800kcal/kg, the raw coal scalping sieve screen size of 50% is changed
Being adjusted to 25mm by 13mm, flip flop screen screen size is adjusted to 13mm by 6mm；Or holding raw coal scalping sieve sieve aperture is
13mm, flip flop screen screen size is that 6mm is constant；Lump coal separation proportion is transferred to 1.6g/cm3, the smalls specific gravity of separation is transferred to 1.5g/
cm3So that constant product quality is at 4400kcal/kg.
(3) as raw coal caloric value ＞ 3800kcal/kg, calculate fine coal according to mine raw coal quality and return storehouse amount, by former
Coal scalping sieve sieve aperture is adjusted to 25mm by 13mm, and flip flop screen sieve aperture is adjusted to 25mm by 13mm, selects 2 flip flop screens simultaneously
Being removed by its sieve plate, smalls is directly entered in product, and lump coal separation proportion is transferred to 1.7g/cm3, the smalls specific gravity of separation is transferred to
1.6g/cm3So that constant product quality, in the case of 4400kcal/kg, keeps product yield more than 92%.
The deep screening of the present embodiment employs two cover systems, and a set of is 3 Tai Bin get flip flop screens, and a set of is that 3 Tai Aorui relax
Open sieve, show that screening efficiency is 80～90% by the data after producing, it is ensured that the fine coal below major part granularity 6mm can be direct
Carry out in product.
Reference examples:
The present embodiment is selected and is connected two ore deposits in same field with "nine squares" with color, and north, the Inner Mongol connection electric energy exploitation that Coal Characteristics is close has
Limit company height head kiln colliery is as reference examples.
The ore-dressing technique in high head kiln colliery is as follows:
High head kiln ore deposit Design for Coal Preparation Plant ability is 8.0Mt/a, and technological process is that 150～13mm level lump coal use dense-medium shallow-tank
Discharge refuse；13～0mm level smalls bypasses；3～0.1mm level coarse slimes use sieve bend and coal slime centrifuge to reclaim；0.1～0mm level
Fine coal slurry uses filter press to reclaim.
The contrast ore-dressing technique of the present invention and product and the ore-dressing technique of reference examples and product:
One, process ration:
Se Lianerkuang coal preparation plant uses raw coal deep screening, and screening lower limit is 6mm；Washing system has smalls system；Coal slime
Water treatment technology is perfect.Gao Touyao ore deposit coal preparation plant only has lump coal system, and slime water treatment technique is simple.
Two, product contrast:
Color connects two mineral products structures: can produce single mixed coal product；Can also be yielded products of quality (4800kcal/kg)
With mixed coal product；Mixed coal and 6mm fine coal product can also be produced；Filter-pressing coal slime.
High head kiln colliery product structure: for single mixed coal product；Arrange outside filter-pressing coal slime.
As shown in table 1, the quality of two colliery products of contrast understands: Se Lianerkuang coal preparation plant uses banana screen+flip flop screen
Combination sieving technology, increases 6mm deep screening, and screening efficiency increases, and the grade reducing below 6mm enters the water yield, and therefore coal slime is produced
Rate is low；Coarse grain slime recovery technique in simultaneously increasing, improves product yield.Gao Tou kiln coal preparation plant only has raw coal once to sieve point
Level, screening effect is poor, and coarse grain slime recovery technique in nothing.
Se Lianerkuang coal preparation plant relatively Gao Touyao ore deposit coal preparation plant adds smalls washing process, increases raw coal and enters the amount of washing, though
So number of devices increases, and power consumption is slightly higher, but product fall ash amplitude increases, and product caloric value is higher.Owing to sulphur content is concentrated mainly on
In spoil, the increase of smalls washing system also increases spoil discharge capacity, and product sulphur content is on the low side.Therefore, it is to cause high head kiln ore deposit
Coal preparation plant's product caloric value is on the low side, the reason that sulphur content is higher.
High head kiln Coal Exploitation, with one section of concentration coal slurry water processing, connects with color compared with the concentration of three sections of two ore deposit, only passes through
Increase chemical feeding quantity and control washing wastewater, considerably increase the cost of medicine consumption.
1 two Raw Coals of table and product quality contrast table
Three, economic efficiency contrast:
Color connects two ore deposits: coal preparation plant's ton raw coal processing charges are 5.66 yuan；Product caloric value 4400kcal/kg；Productivity 78%；Produce
Product price 65 yuan/ton (coal market, Erdos in March, 2016, coal price source price including tax).
High head kiln colliery: coal preparation plant's ton raw coal processing charges are 6.30 yuan；Product caloric value 3950kcal/kg；Productivity 85%；
Product price 45 yuan/ton (coal market, Erdos in March, 2016, coal price source price including tax).
Se Lianerkuang coal preparation plant is selected in one ton of raw coal many wounds benefit 13.09 yuan than high head kiln Coalmine Coal Preparation Plant.According to
Annual selected 8,000,000 tons of raw coal calculate, and color connects two ore deposits than high head kiln colliery many increases economic benefit about 104,720,000
Unit.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (10)
1. a thermal coal method of quality control, it is characterised in that comprise the following steps:
(1) first raw coal is carried out 6mm deep screening；
(2) the block raw coal to 200～13mm or 200～17mm uses dense-medium shallow-tank sorting；
(3) the last raw coal separation to 13～6mm or 17～6mm；
(4) for entering bypass less than 6mm fine coal；
(5) sieve bend, high-frequency screen and coal slime centrifuge dehydration is used to reclaim for 1.5～0.25mm coarse slimes；
(6) for the fine coal slurry less than 0.25mm through two sections of concentrations, screen cloth sedimentation-type centrifuge and filter press associating are used
Reclaim.
A kind of thermal coal method of quality control the most according to claim 1, it is characterised in that the degree of depth of described step (1)
Screening is: as raw coal caloric value ＜ 3400kcal/kg, makes more than 6mm fine coal in raw coal carry out washing in entering washing system,
The specific gravity of separation reducing lump coal Dense-medium system is 1.5g/cm3, the specific gravity of separation of smalls Dense-medium system is 1.4g/cm3, it is ensured that product
Calorific value of coal is stable at 4400kcal/kg, is stored by the unnecessary independent warehouse entry of fine coal.
A kind of thermal coal method of quality control the most according to claim 2, it is characterised in that when raw coal caloric value ＜
During 3400kcal/kg, respectively raw coal scalping sieve screen size being adjusted to 13mm, flip flop screen screen size is adjusted to 6mm,
Reduce the content of siftage, it is achieved in raw coal, more than 6mm fine coal carries out washing in entering washing system.
A kind of thermal coal method of quality control the most according to claim 1, it is characterised in that the degree of depth of described step (1)
Screening is: when raw coal caloric value is in 3400～3800kcal/kg, lump coal separation proportion is transferred to 1.6g/cm3, smalls sorts
Proportion is transferred to 1.5g/cm3So that constant product quality is at 4400kcal/kg.
A kind of thermal coal method of quality control the most according to claim 4, it is characterised in that when raw coal caloric value is 3400
～during 3800kcal/kg, the raw coal scalping by 50% is sieved screen size and is adjusted to 25mm, flip flop screen screen size by 13mm
It is adjusted to 13mm by 6mm.
A kind of thermal coal method of quality control the most according to claim 4, it is characterised in that when raw coal caloric value is 3400
～during 3800kcal/kg, holding raw coal scalping sieve sieve aperture is 13mm and flip flop screen screen size is that 6mm is constant.
A kind of thermal coal method of quality control the most according to claim 1, it is characterised in that the degree of depth of described step (1)
Screening is: as raw coal caloric value ＞ 3800kcal/kg, lump coal separation proportion is transferred to 1.7g/cm3, smalls concentration criterion is resetted
To 1.6g/cm3So that constant product quality is at 4400kcal/kg.
A kind of thermal coal method of quality control the most according to claim 7, it is characterised in that when raw coal caloric value ＞
During 3800kcal/kg, by 13mm, raw coal scalping sieve sieve aperture being adjusted to 25mm, flip flop screen sieve aperture is adjusted to by 13mm
25mm, during smalls is directly entered product simultaneously.
A kind of thermal coal method of quality control the most according to claim 1, it is characterised in that in described step (1), the degree of depth
Screening uses guest to obtain flip flop screen or auspicious flip flop screen difficult to understand.
A kind of thermal coal method of quality control the most according to claim 1, it is characterised in that in described step (3), adopt
Sort with there being pressure two product dense medium cyclone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610569297.2A CN106040421B (en) | 2016-07-18 | 2016-07-18 | A kind of thermal coal method of quality control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610569297.2A CN106040421B (en) | 2016-07-18 | 2016-07-18 | A kind of thermal coal method of quality control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106040421A true CN106040421A (en) | 2016-10-26 |
| CN106040421B CN106040421B (en) | 2018-08-31 |
Family
ID=57187930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610569297.2A Active CN106040421B (en) | 2016-07-18 | 2016-07-18 | A kind of thermal coal method of quality control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106040421B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746114A (en) * | 2019-01-31 | 2019-05-14 | 中国矿业大学 | A kind of difficulty selects steam coal separation technique |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6666335B1 (en) * | 1999-10-29 | 2003-12-23 | C.A.S.T. Minerals, Inc. | Multi-mineral/ash benefication process and apparatus |
| CN101716552A (en) * | 2009-12-28 | 2010-06-02 | 河南理工大学 | Raw coal washing process capable of realizing non-polar ash conditioning |
| CN102179291A (en) * | 2010-12-31 | 2011-09-14 | 中国神华能源股份有限公司 | Steam coal preparation technique with low coal slime yield |
| CN105327770A (en) * | 2015-11-23 | 2016-02-17 | 淮南矿业(集团)有限责任公司 | Coal dressing treatment method |
-
2016
- 2016-07-18 CN CN201610569297.2A patent/CN106040421B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6666335B1 (en) * | 1999-10-29 | 2003-12-23 | C.A.S.T. Minerals, Inc. | Multi-mineral/ash benefication process and apparatus |
| CN101716552A (en) * | 2009-12-28 | 2010-06-02 | 河南理工大学 | Raw coal washing process capable of realizing non-polar ash conditioning |
| CN102179291A (en) * | 2010-12-31 | 2011-09-14 | 中国神华能源股份有限公司 | Steam coal preparation technique with low coal slime yield |
| CN105327770A (en) * | 2015-11-23 | 2016-02-17 | 淮南矿业(集团)有限责任公司 | Coal dressing treatment method |
Non-Patent Citations (5)
| Title |
|---|
| 方庆洲: "淮矿西部公司鄂尔多斯地区选煤厂技术管理实践", 《选煤技术》 * |
| 方庆洲: "色连二矿选煤厂深度筛分工艺的实践", 《煤炭加工与综合利用》 * |
| 方庆洲等: "色连二矿选煤厂工程建设模式的管理实践", 《煤质技术》 * |
| 程雅丽: "动力煤选煤厂商品煤质量动态控制系统设计的研究", 《安徽理工大学硕士学位论文》 * |
| 蔡斌等: "动力煤洗选煤泥减量化技术开发和实践", 《2015年全国选煤学术交流会论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109746114A (en) * | 2019-01-31 | 2019-05-14 | 中国矿业大学 | A kind of difficulty selects steam coal separation technique |
| WO2020155422A1 (en) * | 2019-01-31 | 2020-08-06 | 中国矿业大学 | Process for sorting difficult-to-sort thermal coal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106040421B (en) | 2018-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109794349B (en) | Underground coal dressing process | |
| CN105597915B (en) | The wide dual Jie's whole coarse slime separating process of grade can be achieved in one kind | |
| CN103240168B (en) | Classifying, separating and dewatering method for high-ash-content difficultly-separated coal slime | |
| US4364822A (en) | Autogenous heavy medium process and apparatus for separating coal from refuse | |
| CN102430481B (en) | Sorting process for high-ash and difficult-separation coal slime | |
| CN106076606A (en) | A kind of beneficiation method of the red Complex iron ore of magnetic | |
| CN105080702B (en) | A kind of efficient coal-series pyrite dry method process of enriching and system | |
| CN102319619B (en) | Graded washing process for raw coal | |
| CN205797474U (en) | A kind of high ash coarse slime degree of depth fall ash system | |
| CN102489391B (en) | High-sulfur power raw coal sorting process | |
| CN110292983A (en) | Beneficiation method containing golden secondary copper sulfide mineral | |
| CN109225611B (en) | Coarse slime separating system and process of three-product liquid-solid fluidized bed | |
| CN213350162U (en) | Fine sediment recycle system of coal slurry gasification | |
| CN112371325A (en) | Power coal grading washing process | |
| CN110523524A (en) | A kind of full grade of anthracite is selected to simplify sorting process | |
| CN106040421A (en) | Steam coal quality control method | |
| CN105537120B (en) | The system and method for handling low-order coal | |
| CN104437832A (en) | Dry-method fines removal dense medium sorting process for slack coal flip-flow screen | |
| CN101844106B (en) | Combined and staged separation method for weathered phosphoric ore | |
| CN114749269B (en) | Full-size recycling process for gasified fine slag of coal water slurry | |
| CN206304893U (en) | A kind of sorting unit of the red mixed type iron ore weakly magnetic tailingses of magnetic | |
| CN104741214A (en) | System and method for preparing pulverized coal fuel of pulverized-coal boiler by using coal washing tailings | |
| CN1548233A (en) | Heavy medium separating process for slime | |
| CN107377199A (en) | A kind of pre-selection technique of magnetic iron ore and speculum iron composite ore | |
| CN106311461A (en) | Mine tailing re-cleaning processing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201105 Address after: 232000 Longyan Village neighborhood committee, Dongshan street, tianjia'an District, Huainan City, Anhui Province Patentee after: XINGKE MEASURING TECHNOLOGY SERVICE CO., LTD. OF HUAINAN MINING Group Address before: 232001 Anhui province tianjia'an District mountain in Huainan City Patentee before: HUAINAN MINING INDUSTRY (Group) Co.,Ltd. |
|
| TR01 | Transfer of patent right |