CN105170277A - Screening method and system for tungsten concentrate - Google Patents
Screening method and system for tungsten concentrate Download PDFInfo
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- CN105170277A CN105170277A CN201510704683.3A CN201510704683A CN105170277A CN 105170277 A CN105170277 A CN 105170277A CN 201510704683 A CN201510704683 A CN 201510704683A CN 105170277 A CN105170277 A CN 105170277A
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- 239000012141 concentrate Substances 0.000 title claims abstract description 218
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 148
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 146
- 239000010937 tungsten Substances 0.000 title claims abstract description 146
- 238000012216 screening Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 239000006148 magnetic separator Substances 0.000 claims description 87
- 239000004744 fabric Substances 0.000 claims description 68
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 claims description 62
- 239000004576 sand Substances 0.000 claims description 62
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 238000007885 magnetic separation Methods 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000004513 sizing Methods 0.000 claims description 13
- 238000013467 fragmentation Methods 0.000 claims description 12
- 238000006062 fragmentation reaction Methods 0.000 claims description 12
- 230000006698 induction Effects 0.000 claims description 12
- 239000011148 porous material Substances 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 12
- 238000010334 sieve classification Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 abstract 8
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 7
- XAYGUHUYDMLJJV-UHFFFAOYSA-Z decaazanium;dioxido(dioxo)tungsten;hydron;trioxotungsten Chemical compound [H+].[H+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O XAYGUHUYDMLJJV-UHFFFAOYSA-Z 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZXOKVTWPEIAYAB-UHFFFAOYSA-N dioxido(oxo)tungsten Chemical compound [O-][W]([O-])=O ZXOKVTWPEIAYAB-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 ferrotungsten Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 150000003658 tungsten compounds Chemical class 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a screening method and system for tungsten concentrate, and belongs to the field of concentrate screening. According to the screening method and system for tungsten concentrate, a prescreening line is included, the prescreening line is connected with a screening line for 3-0.83 m, a screening line for 0.83-0.2 mm and a screening line for 0.2-0 mm which are connected in parallel, and a vibrating screen is arranged at the joint of the prescreening line, the screening line for 3-0.83 m, the screening line for 0.83-0.2 mm and the screening line for 0.2-0 mm. The screening system for tungsten concentrate has the advantages that the tungsten concentrate with the low impurity content and high grade can be efficiently screened out, tungsten trioxide of raw ore is effectively utilized, and waste of tungsten trioxide is reduced, and the four steps of prescreening, screening for 3-0.83 mm ore, screening of 0.83-0.2 mm ore and screening of 0.2-0 mm ore are included. The screening method and system for tungsten concentrate have the advantages that the tungsten concentrate with the low impurity content and high grade can be efficiently screened out, the tungsten trioxide of raw ore is effectively utilized, and waste of the tungsten trioxide is reduced.
Description
Technical field
The present invention relates to a kind of concentrate screening technique and system, particularly a kind of tungsten concentrate screening technique and system.
Background technology
Tungsten concentrate is the primary raw material producing the tungsten compounds such as ferrotungsten, sodium tungstate, ammonium paratungstate (APT), ammonium metatungstate (AMT), and its downstream product mainly contains tungstic acid, blue tungsten oxide, tungsten powder, tungsten carbide, carbide alloy, wolfram steel, tungsten rod, tungsten filament etc.Because tungsten concentrate accounts for very large ratio in tungsten production cost, the resolution ratio and the tungsten recovery rate that improve tungsten concentrate or tungsten raw material have great economic implications.
But prior art is generally screened through technical process such as fragmentation, ball milling, gravity treatment, flotation, electric separations by tungsten ore, although the wolframite or white tungsten fine ore that are up to state standards can be produced through diversified screening, but the tungsten concentrate Main Ingredients and Appearance tungstic acid content that prior art is produced only reaches 65%, a large amount of tungstic acids is still had to be wasted, simultaneously still containing a certain amount of impurity.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, provide one can high frequency zone to go out impurity content low, high-grade selected tungsten concentrate, effectively utilizes the tungstic acid of tcrude ore, reduces a kind of tungsten concentrate screening system of tungstic acid waste.
The technical solution used in the present invention is as follows:
A kind of tungsten concentrate screening technique of the present invention, comprises the following steps:
Step one: prescreening;
Step 2: 3 ~ 0.83mm ore sizing;
Step 3: 0.83 ~ 0.2mm ore sizing;
Step 4: 0.2 ~ 0mm ore sizing.
Owing to have employed technique scheme, ore is divided into three order of magnitude by prescreen, the ore of three order of magnitude is screened respectively again, different screening systems can be carried out by the more accurate ore to different brackets, thus improve the grade of ore.
A kind of tungsten concentrate screening technique of the present invention, described step one comprises pan feeding, first time screening and first time fragmentation three steps, ore enters screening by mineral aggregate entrance, completes first time screening through screen cloth one, and the ore being greater than 3mm after first time screening enters after disintegrating machine one carries out first time fragmentation and returns screen cloth one, the ore being less than 3mm enters the vibratory sieve be connected with screen cloth one, vibratory sieve, by ore classification, is divided into 3 ~ 0.83mm ore, 0.83 ~ 0.2mm ore and 0.2 ~ 0mm ore.
Owing to have employed technique scheme, screen cloth one can will be greater than the ore screening of 3mm out, and the ore being greater than 3mm is carried out fragmentation, again screen, through screening-shattering process repeatedly, thus ensure that all ore diameters are all less than 3mm, then through vibratory sieve, classification is carried out to the ore being less than 3mm.
A kind of tungsten concentrate screening technique of the present invention, described step 2 comprises first time magnetic separation, and strong magnetic is roughly selected for the first time, and first time, strong magnetic was scanned, and the strong magnetic of first time secondary is selected, for the second time broken and programmed screening six steps; Enter magnetic separator one through 3 ~ 0.83mm ore of vibratory sieve classification and complete first time magnetic separation, screening tungsten ore out completes first time strong magnetic roughly select through roughly selecting strong magnetic machine one, sieves out tungsten concentrate one, secondary concentrate one, chats one and mine tailing one; Chats one and mine tailing are scanned strong magnetic machine one and are completed first time strong magnetic once crossing and scan, and sieve out tungsten concentrate two, secondary concentrate two and mine tailing two; Secondary concentrate one, tungsten concentrate two and time concentrate two complete first time recleaning through the strong magnetic machine one of recleaning, screening impurity removal sand and tungsten concentrate three; It is broken that mine tailing two completes second time through disintegrating machine two, completes programmed screening, sieve out the ore of 1.5 ~ 0.83mm and pending ore through screen cloth five, and the ore of 1.5 ~ 0.83mm enters into magnetic separator one to be continued to repeat step 2.
A kind of tungsten concentrate screening technique of the present invention, described step 3 comprises second time magnetic separation, and the strong magnetic of second time is roughly selected, and the strong magnetic of second time is scanned and selected four steps of the second time strong magnetic of secondary; Enter magnetic separator two through the ore of 0.83 ~ 0.2mm of vibratory sieve classification and complete second time magnetic separation, screening tungsten ore out completes the strong magnetic of second time roughly select through roughly selecting strong magnetic machine two, sieves out tungsten concentrate four, secondary concentrate three and mine tailing three; Pending ore in mine tailing three and step 2 completes the strong magnetic of second time scan through scanning strong magnetic machine two, sieves out time concentrate four and mine tailing four; Secondary concentrate three and time concentrate four complete second time recleaning through the strong magnetic machine two of recleaning, screening impurity removal sand two and tungsten concentrate five; Mine tailing four and assorted sand two merge.
A kind of tungsten concentrate screening technique of the present invention, described step 4 comprises third time magnetic separation, and third time, strong magnetic was roughly selected, and third time, strong magnetic was scanned and selected four steps of the third time strong magnetic of secondary; Enter magnetic separator three through the ore of 0.2 ~ 0mm of vibratory sieve classification and complete third time magnetic separation, screening tungsten ore out completes third time strong magnetic roughly select through roughly selecting strong magnetic machine three, sieves out time concentrate five and ore to be screened; Band screened ore completes third time strong magnetic scan through scanning strong magnetic machine three, sieves out time concentrate six and mine tailing five; Secondary concentrate five and time concentrate the six channels are crossed the strong magnetic machine three of recleaning and are completed third time recleaning, screening impurity removal sand three and tungsten concentrate six; Mine tailing five and assorted sand four merge.
Owing to have employed technique scheme, by the screening of different condition, to tungsten concentrate sizing screening, farthest tungsten concentrate is screened from assorted sand, to the full extent tungstic acid is separated, simultaneously because the superfine of fragmentation causes, while improving raw ore utilization rate, improve the grade of tungsten concentrate.
A kind of tungsten concentrate screening technique of the present invention, described tungsten concentrate one, tungsten concentrate three, tungsten concentrate four, tungsten concentrate five and tungsten concentrate six are collected in tungsten concentrate collector; Described mine tailing two and mine tailing are collected in mine tailing collector; Described assorted sand one, assorted sand two and assorted sand three are collected in assorted sand collector.
Owing to have employed technique scheme, by mine tailing and assorted sand separate collection, mine tailing still has certain value, separates with assorted sand, farthest can utilize raw ore, avoids waste.
A kind of tungsten concentrate screening system of the present invention, comprise prescreening route, described prescreening route is connected with the 3 ~ 0.83mm be in parallel and sieves route, 0.83 ~ 0.2mm sieves route and 0.2 ~ 0mm sieves route, described prescreening route, 3 ~ 0.83mm sieves route, and 0.83 ~ 0.2mm sieves route and 0.2 ~ 0mm screening route is intersected in vibratory sieve; Described prescreening route comprises the mineral aggregate entrance and screen cloth one that are linked in sequence, and described screen cloth one is connected with the disintegrating machine one and discharging opening that are in parallel, and described disintegrating machine is connected in screen cloth 1 one time, and described discharging opening is connected to vibratory sieve; Described 3 ~ 0.83mm sieves route and comprises magnetic separator one, and described magnetic separator one is connected with the magnetic iron ore outlet one that is in parallel and roughly selects strong magnetic machine one; Describedly roughly select strong magnetic machine one and be provided with tungsten concentrate outlet one, secondary concentrate outlet one, chats outlet one and mine tailing outlet one; Described chats outlet one and mine tailing outlet one cross to be connected with and scan strong magnetic machine one, described in scan strong magnetic machine one and be provided with tungsten concentrate outlet two, secondary concentrate outlet two and mine tailing outlet two; Described concentrate outlet one, tungsten concentrate outlet two and time concentrate outlet two cross and are connected with the strong magnetic machine one of recleaning; Described mine tailing outlet two is connected with disintegrating machine two, and described disintegrating machine two connects screen cloth five, and described screen cloth five is provided with screening outlet one and screening outlet two, described screening outlet company and magnetic separator one; Described recleaning strong magnetic machine one is provided with assorted sand outlet one and tungsten concentrate outlet three; Described 0.83 ~ 0.2mm sieves route and comprises magnetic separator two, and described magnetic separator two is connected with the magnetic iron ore outlet two that is in parallel and roughly selects strong magnetic machine two; Describedly roughly select strong magnetic machine two and be provided with tungsten concentrate outlet four, secondary concentrate outlet three, and mine tailing outlet three; Described mine tailing outlet three is connected with scans strong magnetic machine two, described in scan strong magnetic machine two and be connected with secondary concentrate outlet four that is in parallel and mine tailing exports four; Described concentrate outlet three and time concentrate outlet four cross and are connected with the strong magnetic machine two of recleaning, and described recleaning strong magnetic machine two is provided with tungsten concentrate outlet five and assorted sand outlet two; Described mine tailing outlet four exports two with assorted sand and is connected; Described screening outlet two and mine tailing export three and cross and to be connected and scan strong magnetic machine two; Described 0.2 ~ 0mm sieves route and comprises magnetic separator three, and described magnetic separator three is connected with the magnetic iron ore outlet three that is in parallel and roughly selects strong magnetic machine three; Describedly roughly select strong magnetic machine two and be provided with the secondary concentrate outlet four that is in parallel and scan strong magnetic machine three, described in scan strong magnetic machine three and be connected with secondary concentrate outlet six that is in parallel and mine tailing exports four; Described concentrate outlet five and time concentrate outlet six cross and are connected with the strong magnetic machine three of recleaning, and described recleaning strong magnetic machine three is provided with tungsten concentrate outlet six and assorted sand outlet three; Described mine tailing outlet five and assorted sand export three and cross and be connected to assorted sand and export four.
Owing to have employed technique scheme, screen cloth one can will be greater than the ore screening of 3mm out, and the ore being greater than 3mm is carried out fragmentation, again screen, through screening-shattering process repeatedly, thus ensure that all ore diameters are all less than 3mm, then through vibratory sieve, classification is carried out to the ore being less than 3mm.
Screen through magnetic separator one, the magnetic iron ore of 3 ~ 0.83mm and tungsten concentrate can be separated, can by the tungsten concentrate of 3 ~ 0.83mm through roughly selecting strong magnetic machine one, secondary concentrate, chats and mine tailing distinguish, can by the tungsten concentrate in chats and mine tailing through scanning strong magnetic machine one, secondary concentrate and tailings distinguishes, assorted sand and tungsten concentrate can be distinguished through recleaning strong magnetic machine one, carry out again broken to mine tailing simultaneously, again screen.
Screen through magnetic separator two, the magnetic iron ore of 0.83 ~ 0.2mm and tungsten concentrate can be separated, can by the tungsten concentrate of 0.83 ~ 0.2mm through roughly selecting strong magnetic machine two, secondary concentrate and tailings distinguishes, secondary concentrate and tailings in mine tailing can be distinguished through scanning strong magnetic machine two, assorted sand and tungsten concentrate can be distinguished through recleaning strong magnetic machine two.
Through magnetic separator three screening, the magnetic iron ore of 0.2 ~ 0mm and tungsten concentrate can be separated, the secondary concentrate and tailings of 0.2 ~ 0mm can be distinguished through roughly selecting strong magnetic machine two, secondary concentrate and tailings in mine tailing can be distinguished through scanning strong magnetic machine three, tungsten concentrate in secondary concentrate can be extracted through recleaning strong magnetic machine three, distinguish with assorted sand.
By the screening of different condition, to tungsten concentrate sizing screening, farthest tungsten concentrate is screened from assorted sand, to the full extent tungstic acid is separated, simultaneously because the superfine of fragmentation causes, while improving raw ore utilization rate, improve the grade of tungsten concentrate.
A kind of tungsten concentrate screening system of the present invention, the aperture diameter of described screen cloth one is 3mm; Described disintegrating machine one is centrifugal impact crusher, and the rotating speed of described disintegrating machine one is 1900r/min; Described vibratory sieve is provided with three grades of screen clothes, be respectively screen cloth two, screen cloth three and screen cloth four, the pore size of described screen cloth two is 3mm, and the pore size of described screen cloth three is 0.83mm, the pore size of described screen cloth four is 0.2mm, described vibratory sieve is provided with four vibrators, and the power of each described vibrator is 200w, and sieve vibration frequency is 3000r/min, amplitude 1.5mm, compass screen surface angle is 36 ° ± 3 °.
Owing to have employed technique scheme, centrifugal impact crusher can by efficiently by ore reduction, and be under the condition of 1900r/min at rotating speed, crushing effect is best.
Three grades of vibratory sieves, through screen cloth two, the trommel that diameter can be less than 3mm is selected, and through screen cloth three, the trommel that diameter can be less than 0.83mm is selected, and through screen cloth four, diameter can be less than the ore screening of 0.2mm out; Be divided into diameter to be 3 ~ 0.83mm, 0.83 ~ 0.2mm, 0.2 ~ 0mm Three Estate in ore through sizing screening, thus reach the object to ore classification.
Sieve vibration frequency is 3000r/min, amplitude 1.5mm, and compass screen surface angle is 36 ° ± 3 ° and can effectively avoids ore to block mesh size, improves screening effeciency.
A kind of tungsten concentrate screening system of the present invention, described magnetic separator one is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 500mT; Described magnetic field intensity of roughly selecting strong magnetic machine one is 4000Oe; Describedly scan strong magnetic machine one for scraping disk-type magnetic separator, magnetic field intensity is 3000Oe; The strong magnetic machine one of described recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe; Described disintegrating machine two is centrifugal mill, and described disintegrating machine two rotating speed is 4000r/min; Described screen cloth five is classification screen cloth, and the sieve aperture of the first order is 1.5mm, and the sieve aperture of the second level is 0.83mm; Described magnetic separator two is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 300mT; Described magnetic field intensity of roughly selecting strong magnetic machine two is 3000Oe; Describedly scan strong magnetic machine two for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine two of described recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe; Described magnetic separator three is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 100mT; Described magnetic field intensity of roughly selecting strong magnetic machine three is 2000Oe; Describedly scan strong magnetic machine three for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine three of described recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe.
Above-mentioned conditional filtering tungsten concentrate is out of high grade, maximum to the utilization rate of tcrude ore.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, ore is divided into three order of magnitude by prescreen, the ore of three order of magnitude screened respectively again, different screening systems can be carried out by the more accurate ore to different brackets, thus improve the grade of ore.
2, by the screening of different condition, to tungsten concentrate sizing screening, farthest tungsten concentrate is screened from assorted sand, to the full extent tungstic acid is separated, simultaneously because the superfine of fragmentation causes, while improving raw ore utilization rate, improve the grade of tungsten concentrate.
3, by mine tailing and assorted sand separate collection, mine tailing still has certain value, separates with assorted sand, farthest can utilize raw ore, avoids waste, improves the utilization rate of raw ore, saved exploitation, environment, energy cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of tungsten concentrate screening technique and system.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make the object of invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, a kind of tungsten concentrate screening technique, is characterized in that comprising the following steps:
Step one: prescreening;
Step one comprises pan feeding, first time screening and first time fragmentation three steps, ore enters screening by mineral aggregate entrance, first time screening is completed through screen cloth one, the ore being greater than 3mm after first time screening enters after disintegrating machine one carries out first time fragmentation and returns screen cloth one, and the ore being less than 3mm enters the vibratory sieve be connected with screen cloth one, and vibratory sieve is by ore classification, be divided into 3 ~ 0.83mm ore, 0.83 ~ 0.2mm ore and 0.2 ~ 0mm ore.
The aperture diameter of screen cloth one is 3mm; Disintegrating machine one is centrifugal impact crusher, and the rotating speed of disintegrating machine one is 1900r/min; Vibratory sieve is provided with three grades of screen clothes, be respectively screen cloth two, screen cloth three and screen cloth four, the pore size of screen cloth two is 3mm, and the pore size of screen cloth three is 0.83mm, the pore size of screen cloth four is 0.2mm, vibratory sieve is provided with four vibrators, and the power of each described vibrator is 200w, and sieve vibration frequency is 3000r/min, amplitude 1.5mm, compass screen surface angle is 36 ° ± 3 °.
Step 2: 3 ~ 0.83mm ore sizing;
Step 2 comprises first time magnetic separation, and strong magnetic is roughly selected for the first time, and first time, strong magnetic was scanned, and the strong magnetic of first time secondary is selected, for the second time broken and programmed screening six steps; Enter magnetic separator one through 3 ~ 0.83mm ore of vibratory sieve classification and complete first time magnetic separation, screening tungsten ore out completes first time strong magnetic roughly select through roughly selecting strong magnetic machine one, sieves out tungsten concentrate one, secondary concentrate one, chats one and mine tailing one; Chats one and mine tailing are scanned strong magnetic machine one and are completed first time strong magnetic once crossing and scan, and sieve out tungsten concentrate two, secondary concentrate two and mine tailing two; Secondary concentrate one, tungsten concentrate two and time concentrate two complete first time recleaning through the strong magnetic machine one of recleaning, screening impurity removal sand and tungsten concentrate three; It is broken that mine tailing two completes second time through disintegrating machine two, completes programmed screening, sieve out the ore of 1.5 ~ 0.83mm and pending ore through screen cloth five, and the ore of 1.5 ~ 0.83mm enters into magnetic separator one to be continued to repeat step 2.
Magnetic separator one is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 500mT; The magnetic field intensity of roughly selecting strong magnetic machine one is 4000Oe; Scan strong magnetic machine one for scraping disk-type magnetic separator, magnetic field intensity is 3000Oe; The strong magnetic machine one of recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe; Disintegrating machine two is centrifugal mill, and disintegrating machine two rotating speed is 4000r/min; Screen cloth five is classification screen cloth, and the sieve aperture of the first order is 1.5mm, and the sieve aperture of the second level is 0.83mm.
Step 3: 0.83 ~ 0.2mm ore sizing;
Step 3 comprises second time magnetic separation, and the strong magnetic of second time is roughly selected, and the strong magnetic of second time is scanned and selected four steps of the second time strong magnetic of secondary; Enter magnetic separator two through the ore of 0.83 ~ 0.2mm of vibratory sieve classification and complete second time magnetic separation, screening tungsten ore out completes the strong magnetic of second time roughly select through roughly selecting strong magnetic machine two, sieves out tungsten concentrate four, secondary concentrate three and mine tailing three; Pending ore in mine tailing three and step 2 completes the strong magnetic of second time scan through scanning strong magnetic machine two, sieves out time concentrate four and mine tailing four; Secondary concentrate three and time concentrate four complete second time recleaning through the strong magnetic machine two of recleaning, screening impurity removal sand two and tungsten concentrate five; Mine tailing four and assorted sand two merge.
Magnetic separator two is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is the magnetic field intensity that 300mT roughly selects strong magnetic machine two is 3000Oe; Scan strong magnetic machine two for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine two of recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe.
Step 4: 0.2 ~ 0mm ore sizing;
Step 4 comprises third time magnetic separation, and third time, strong magnetic was roughly selected, and third time, strong magnetic was scanned and selected four steps of the third time strong magnetic of secondary; Enter magnetic separator three through the ore of 0.2 ~ 0mm of vibratory sieve classification and complete third time magnetic separation, screening tungsten ore out completes third time strong magnetic roughly select through roughly selecting strong magnetic machine three, sieves out time concentrate five and ore to be screened; Band screened ore completes third time strong magnetic scan through scanning strong magnetic machine three, sieves out time concentrate six and mine tailing five; Secondary concentrate five and time concentrate the six channels are crossed the strong magnetic machine three of recleaning and are completed third time recleaning, screening impurity removal sand three and tungsten concentrate six; Mine tailing five and assorted sand four merge.
Magnetic separator three is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 100mT; The magnetic field intensity of roughly selecting strong magnetic machine three is 2000Oe; Scan strong magnetic machine three for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine three of recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe.
Tungsten concentrate one, tungsten concentrate three, tungsten concentrate four, tungsten concentrate five and tungsten concentrate six are collected in tungsten concentrate collector; Described mine tailing two and mine tailing are collected in mine tailing collector; Described assorted sand one, assorted sand two and assorted sand three are collected in assorted sand collector.
A kind of screening system of tungsten concentrate, comprise prescreening route, described prescreening route is connected with the 3 ~ 0.83mm be in parallel and sieves route, 0.83 ~ 0.2mm sieves route and 0.2 ~ 0mm sieves route, described prescreening route, 3 ~ 0.83mm sieves route, and 0.83 ~ 0.2mm sieves route and 0.2 ~ 0mm screening route is intersected in vibratory sieve.
Prescreening route comprises the mineral aggregate entrance and screen cloth one that are linked in sequence, and screen cloth one is connected with the disintegrating machine one and discharging opening that are in parallel, and disintegrating machine is connected in screen cloth 1 one time, and discharging opening is connected to vibratory sieve.The aperture diameter of screen cloth one is 3mm; Disintegrating machine one is centrifugal impact crusher, and the rotating speed of disintegrating machine one is 1900r/min; Vibratory sieve is provided with three grades of screen clothes, be respectively screen cloth two, screen cloth three and screen cloth four, the pore size of screen cloth two is 3mm, and the pore size of screen cloth three is 0.83mm, the pore size of screen cloth four is 0.2mm, vibratory sieve is provided with four vibrators, and the power of each described vibrator is 200w, and sieve vibration frequency is 3000r/min, amplitude 1.5mm, compass screen surface angle is 36 ° ± 3 °.
3 ~ 0.83mm sieves route and comprises magnetic separator one, and magnetic separator one is connected with the magnetic iron ore outlet one and roughly select strong magnetic machine one be in parallel; Roughly select strong magnetic machine one and be provided with tungsten concentrate outlet one, secondary concentrate outlet one, chats outlet one and mine tailing outlet one; Chats outlet one and mine tailing outlet one cross to be connected with and scan strong magnetic machine one, scan strong magnetic machine one and are provided with tungsten concentrate outlet two, secondary concentrate outlet two and mine tailing outlet two; Secondary concentrate outlet one, tungsten concentrate outlet two and time concentrate outlet two cross and are connected with the strong magnetic machine one of recleaning; Mine tailing outlet two is connected with disintegrating machine two, and disintegrating machine two connects screen cloth five, and screen cloth five is provided with screening outlet one and screening outlet two, screening outlet company and magnetic separator one; Recleaning strong magnetic machine one is provided with assorted sand outlet one and tungsten concentrate outlet three.Magnetic separator one is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 500mT; The magnetic field intensity of roughly selecting strong magnetic machine one is 4000Oe; Scan strong magnetic machine one for scraping disk-type magnetic separator, magnetic field intensity is 3000Oe; The strong magnetic machine one of recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe; Disintegrating machine two is centrifugal mill, and disintegrating machine two rotating speed is 4000r/min; Screen cloth five is classification screen cloth, and the sieve aperture of the first order is 1.5mm, and the sieve aperture of the second level is 0.83mm.Screen through magnetic separator one, the magnetic iron ore of 3 ~ 0.83mm and tungsten concentrate can be separated, can by the tungsten concentrate of 3 ~ 0.83mm through roughly selecting strong magnetic machine one, secondary concentrate, chats and mine tailing distinguish, can by the tungsten concentrate in chats and mine tailing through scanning strong magnetic machine one, secondary concentrate and tailings distinguishes, assorted sand and tungsten concentrate can be distinguished through recleaning strong magnetic machine one, carry out again broken to mine tailing simultaneously, again screen.
0.83 ~ 0.2mm sieves route and comprises magnetic separator two, and magnetic separator two is connected with the magnetic iron ore outlet two and roughly select strong magnetic machine two be in parallel; Roughly select strong magnetic machine two and be provided with tungsten concentrate outlet four, secondary concentrate outlet three, and mine tailing outlet three; Mine tailing outlet three is connected with scans strong magnetic machine two, scans strong magnetic machine two and is connected with the secondary concentrate outlet four and mine tailing outlet four that are in parallel; Secondary concentrate outlet three and time concentrate outlet four cross and are connected with the strong magnetic machine two of recleaning, and recleaning strong magnetic machine two is provided with tungsten concentrate outlet five and assorted sand outlet two; Mine tailing outlet four exports two with assorted sand and is connected; Screening outlet two and mine tailing export three and cross and be connected and scan strong magnetic machine two.Magnetic separator two is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 300mT; The magnetic field intensity of roughly selecting strong magnetic machine two is 3000Oe; Scan strong magnetic machine two for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine two of recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe.Screen through magnetic separator two, the magnetic iron ore of 0.83 ~ 0.2mm and tungsten concentrate can be separated, can by the tungsten concentrate of 0.83 ~ 0.2mm through roughly selecting strong magnetic machine two, secondary concentrate and tailings distinguishes, secondary concentrate and tailings in mine tailing can be distinguished through scanning strong magnetic machine two, assorted sand and tungsten concentrate can be distinguished through recleaning strong magnetic machine two.
0.2 ~ 0mm sieves route and comprises magnetic separator three, and magnetic separator three is connected with the magnetic iron ore outlet three and roughly select strong magnetic machine three be in parallel; Roughly select strong magnetic machine two be provided with the secondary concentrate outlet four that is in parallel and scan strong magnetic machine three, scan strong magnetic machine three and be connected with secondary concentrate outlet six that is in parallel and mine tailing exports four; Secondary concentrate outlet five and time concentrate outlet six cross and are connected with the strong magnetic machine three of recleaning, and recleaning strong magnetic machine three is provided with tungsten concentrate outlet six and assorted sand outlet three; Mine tailing outlet five and assorted sand export three and cross and be connected to assorted sand and export four.Magnetic separator three is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 100mT; The magnetic field intensity of roughly selecting strong magnetic machine three is 2000Oe; Scan strong magnetic machine three for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine three of recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe.Through magnetic separator three screening, the magnetic iron ore of 0.2 ~ 0mm and tungsten concentrate can be separated, the secondary concentrate and tailings of 0.2 ~ 0mm can be distinguished through roughly selecting strong magnetic machine two, secondary concentrate and tailings in mine tailing can be distinguished through scanning strong magnetic machine three, tungsten concentrate in secondary concentrate can be extracted through recleaning strong magnetic machine three, distinguish with assorted sand.
Tungsten concentrate outlet one, tungsten concentrate outlet three, tungsten concentrate outlet four, tungsten concentrate outlet five and tungsten concentrate outlet six cross and are connected to tungsten concentrate collector; Mine tailing outlet two and mine tailing outlet five cross and are connected to mine tailing collector; Assorted sand outlet one, assorted sand outlet two and assorted sand outlet three cross and are connected to assorted sand collector.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a tungsten concentrate screening technique, is characterized in that comprising the following steps:
Step one: prescreening;
Step 2: 3 ~ 0.83mm ore sizing;
Step 3: 0.83 ~ 0.2mm ore sizing;
Step 4: 0.2 ~ 0mm ore sizing.
2. a kind of tungsten concentrate screening technique as claimed in claim 1, it is characterized in that: described step one comprises pan feeding, first time screening and first time fragmentation three steps, ore enters screening by mineral aggregate entrance, first time screening is completed through screen cloth one, the ore being greater than 3mm after first time screening enters after disintegrating machine one carries out first time fragmentation and returns screen cloth one, the ore being less than 3mm enters the vibratory sieve be connected with screen cloth one, vibratory sieve is by ore classification, be divided into 3 ~ 0.83mm ore, 0.83 ~ 0.2mm ore and 0.2 ~ 0mm ore.
3. a kind of tungsten concentrate screening technique as claimed in claim 1 or 2, is characterized in that: described step 2 comprises first time magnetic separation, and strong magnetic is roughly selected for the first time, and first time, strong magnetic was scanned, and the strong magnetic of first time secondary is selected, for the second time broken and programmed screening six steps; Enter magnetic separator one through 3 ~ 0.83mm ore of vibratory sieve classification and complete first time magnetic separation, screening tungsten ore out completes first time strong magnetic roughly select through roughly selecting strong magnetic machine one, sieves out tungsten concentrate one, secondary concentrate one, chats one and mine tailing one; Chats one and mine tailing are scanned strong magnetic machine one and are completed first time strong magnetic once crossing and scan, and sieve out tungsten concentrate two, secondary concentrate two and mine tailing two; Secondary concentrate one, tungsten concentrate two and time concentrate two complete first time recleaning through the strong magnetic machine one of recleaning, screening impurity removal sand and tungsten concentrate three; It is broken that mine tailing two completes second time through disintegrating machine two, completes programmed screening, sieve out the ore of 1.5 ~ 0.83mm and pending ore through screen cloth five, and the ore of 1.5 ~ 0.83mm enters into magnetic separator one to be continued to repeat step 2.
4. a kind of tungsten concentrate screening technique as claimed in claim 3, is characterized in that: described step 3 comprises second time magnetic separation, and the strong magnetic of second time is roughly selected, and the strong magnetic of second time is scanned and selected four steps of the second time strong magnetic of secondary; Enter magnetic separator two through the ore of 0.83 ~ 0.2mm of vibratory sieve classification and complete second time magnetic separation, screening tungsten ore out completes the strong magnetic of second time roughly select through roughly selecting strong magnetic machine two, sieves out tungsten concentrate four, secondary concentrate three and mine tailing three; Pending ore in mine tailing three and step 2 completes the strong magnetic of second time scan through scanning strong magnetic machine two, sieves out time concentrate four and mine tailing four; Secondary concentrate three and time concentrate four complete second time recleaning through the strong magnetic machine two of recleaning, screening impurity removal sand two and tungsten concentrate five; Mine tailing four and assorted sand two merge.
5. a kind of tungsten concentrate screening technique as described in claim 1 or 2 or 4, is characterized in that: described step 4 comprises third time magnetic separation, and third time, strong magnetic was roughly selected, and third time, strong magnetic was scanned and selected four steps of the third time strong magnetic of secondary; Enter magnetic separator three through the ore of 0.2 ~ 0mm of vibratory sieve classification and complete third time magnetic separation, screening tungsten ore out completes third time strong magnetic roughly select through roughly selecting strong magnetic machine three, sieves out time concentrate five and ore to be screened; Band screened ore completes third time strong magnetic scan through scanning strong magnetic machine three, sieves out time concentrate six and mine tailing five; Secondary concentrate five and time concentrate the six channels are crossed the strong magnetic machine three of recleaning and are completed third time recleaning, screening impurity removal sand three and tungsten concentrate six; Mine tailing five and assorted sand four merge.
6. a kind of tungsten concentrate screening technique as claimed in claim 5, it is characterized in that: described tungsten concentrate one, tungsten concentrate three, tungsten concentrate four, tungsten concentrate five and tungsten concentrate six are collected in tungsten concentrate collector; Described mine tailing two and mine tailing are collected in mine tailing collector; Described assorted sand one, assorted sand two and assorted sand three are collected in assorted sand collector.
7. a kind of tungsten concentrate screening system as claimed in claim 6, it is characterized in that: comprise prescreening route, described prescreening route is connected with the 3 ~ 0.83mm be in parallel and sieves route, 0.83 ~ 0.2mm sieves route and 0.2 ~ 0mm sieves route, described prescreening route, 3 ~ 0.83mm sieves route, and 0.83 ~ 0.2mm sieves route and 0.2 ~ 0mm screening route is intersected in vibratory sieve; Described prescreening route comprises the mineral aggregate entrance and screen cloth one that are linked in sequence, and described screen cloth one is connected with the disintegrating machine one and discharging opening that are in parallel, and described disintegrating machine is connected in screen cloth 1 one time, and described discharging opening is connected to vibratory sieve; Described 3 ~ 0.83mm sieves route and comprises magnetic separator one, and described magnetic separator one is connected with the magnetic iron ore outlet one that is in parallel and roughly selects strong magnetic machine one; Describedly roughly select strong magnetic machine one and be provided with tungsten concentrate outlet one, secondary concentrate outlet one, chats outlet one and mine tailing outlet one; Described chats outlet one and mine tailing outlet one cross to be connected with and scan strong magnetic machine one, described in scan strong magnetic machine one and be provided with tungsten concentrate outlet two, secondary concentrate outlet two and mine tailing outlet two; Described concentrate outlet one, tungsten concentrate outlet two and time concentrate outlet two cross and are connected with the strong magnetic machine one of recleaning; Described mine tailing outlet two is connected with disintegrating machine two, and described disintegrating machine two connects screen cloth five, and described screen cloth five is provided with screening outlet one and screening outlet two, described screening outlet company and magnetic separator one; Described recleaning strong magnetic machine one is provided with assorted sand outlet one and tungsten concentrate outlet three; Described 0.83 ~ 0.2mm sieves route and comprises magnetic separator two, and described magnetic separator two is connected with the magnetic iron ore outlet two that is in parallel and roughly selects strong magnetic machine two; Describedly roughly select strong magnetic machine two and be provided with tungsten concentrate outlet four, secondary concentrate outlet three, and mine tailing outlet three; Described mine tailing outlet three is connected with scans strong magnetic machine two, described in scan strong magnetic machine two and be connected with secondary concentrate outlet four that is in parallel and mine tailing exports four; Described concentrate outlet three and time concentrate outlet four cross and are connected with the strong magnetic machine two of recleaning, and described recleaning strong magnetic machine two is provided with tungsten concentrate outlet five and assorted sand outlet two; Described mine tailing outlet four exports two with assorted sand and is connected; Described screening outlet two and mine tailing export three and cross and to be connected and scan strong magnetic machine two; Described 0.2 ~ 0mm sieves route and comprises magnetic separator three, and described magnetic separator three is connected with the magnetic iron ore outlet three that is in parallel and roughly selects strong magnetic machine three; Describedly roughly select strong magnetic machine two and be provided with the secondary concentrate outlet four that is in parallel and scan strong magnetic machine three, described in scan strong magnetic machine three and be connected with secondary concentrate outlet six that is in parallel and mine tailing exports four; Described concentrate outlet five and time concentrate outlet six cross and are connected with the strong magnetic machine three of recleaning, and described recleaning strong magnetic machine three is provided with tungsten concentrate outlet six and assorted sand outlet three; Described mine tailing outlet five and assorted sand export three and cross and be connected to assorted sand and export four.
8. a kind of tungsten concentrate screening system as claimed in claim 7, is characterized in that: the aperture diameter of described screen cloth one is 3mm; Described disintegrating machine one is centrifugal impact crusher, and the rotating speed of described disintegrating machine one is 1900r/min; Described vibratory sieve is provided with three grades of screen clothes, be respectively screen cloth two, screen cloth three and screen cloth four, the pore size of described screen cloth two is 3mm, and the pore size of described screen cloth three is 0.83mm, the pore size of described screen cloth four is 0.2mm, described vibratory sieve is provided with four vibrators, and the power of each described vibrator is 200w, and sieve vibration frequency is 3000r/min, amplitude 1.5mm, compass screen surface angle is 36 ° ± 3 °.
9. a kind of tungsten concentrate screening system as claimed in claim 7 or 8, is characterized in that: described magnetic separator one is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 500mT; Described magnetic field intensity of roughly selecting strong magnetic machine one is 4000Oe; Describedly scan strong magnetic machine one for scraping disk-type magnetic separator, magnetic field intensity is 3000Oe; The strong magnetic machine one of described recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe; Described disintegrating machine two is centrifugal mill, and described disintegrating machine two rotating speed is 4000r/min; Described screen cloth five is classification screen cloth, and the sieve aperture of the first order is 1.5mm, and the sieve aperture of the second level is 0.83mm; Described magnetic separator two is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 300mT; Described magnetic field intensity of roughly selecting strong magnetic machine two is 3000Oe; Describedly scan strong magnetic machine two for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine two of described recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe; Described magnetic separator three is drum magnetic separator, and magnetic cylinder table average magnetic induction intensity is 100mT; Described magnetic field intensity of roughly selecting strong magnetic machine three is 2000Oe; Describedly scan strong magnetic machine three for scraping disk-type magnetic separator, magnetic field intensity is 2000Oe; The strong magnetic machine three of described recleaning is cylinder magnetic separator, and magnetic field intensity is 2000Oe.
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| CN109277168A (en) * | 2018-08-23 | 2019-01-29 | 王永亮 | A kind of multi-functional preparation equipment |
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Effective date of registration: 20180718 Address after: 341000 10 Chuang Road, Ganzhou hi tech Industrial Development Zone, Ganxian District, Ganzhou, Jiangxi Patentee after: Ganzhou tungsten tungsten tungsten alloy Co., Ltd. Address before: 610041 1, 18 building, 1 2, south two section, Wuhou District first ring road, Chengdu, Sichuan. Patentee before: Zhang Rongbin |
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