CN110075980A - A kind of magnetic field impulse preprocess method for tourmaline grinding aid - Google Patents
A kind of magnetic field impulse preprocess method for tourmaline grinding aid Download PDFInfo
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- CN110075980A CN110075980A CN201910475157.2A CN201910475157A CN110075980A CN 110075980 A CN110075980 A CN 110075980A CN 201910475157 A CN201910475157 A CN 201910475157A CN 110075980 A CN110075980 A CN 110075980A
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- tourmaline
- magnetic field
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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
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
-
- 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
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
- B02C2019/183—Crushing by discharge of high electrical energy
Abstract
A kind of magnetic field impulse preprocess method for tourmaline grinding aid, using tourmaline magnetic field impulse pretreatment unit, comprising the following steps: (1) connect pre-processing channel with ore treatment channel；Set residence time of the tourmaline ore in pre-processing channel；(2) general supply for opening tourmaline magnetic field impulse pretreatment unit applies pulse current to two oscillation circuits, and the frequency that control drive module controls two oscillation circuits is 100~200Hz；(3) two oscillation circuits alternately start with second stage in the first stage and shutdown；(4) hollow circular coil is acted on by pulse current and generates pulsed magnetic field, carries out magnetic field impulse pretreatment to tourmaline ore；(5) ore grinding is carried out after magnetic field impulse pretreatment.Method of the invention has the advantages of low in energy consumption, to improve energy utilization rate, significantly improves ore treatment ability and efficiency.
Description
Technical field
The invention belongs to technical field of mineral processing, and in particular to a kind of magnetic field impulse pretreatment side for tourmaline grinding aid
Method.
Background technique
Tourmaline is the general designation of tourmaline race mineral, it is a kind of characterized by boracic, and structure and chemical constituent are very
Complicated cyclic structure silicates mineral；Tourmaline belongs to trigonal system, is in the form of a column crystalline form, no cleavage, and cross section is in ball
Face triangle, most of common shape are that multiple tripartite singly bores crystal, and aggregate is mainly in the form of a column, is rodlike, is radial, compact massive
Deng.
Tourmaline has permanent spontaneous polarization effect, piezoelectricity and pyroelectric, and it is remote red can to discharge anion, radiation
Outside line, the characteristic for shielding electromagnetism, adion and recoverable are a kind of environmentally protective functional mineral material, tool
Have broad application prospects；The field that tourmaline product sets foot in is very extensive, such as medicine, environmental protection, chemical industry, light industry, electronics, produces
Product have the washing of substitution staple fibre, floating dust absorbent, sewage-treating agent, sewage-treatment plant, cosmetics filler, washing powder
Ball, skin and hair detergent etc..
Currently, China is still in the primary stage for the fundamental research of tourmaline, mainly there is the following aspects: electricity
The purification processing of gas stone, ultra-fine grinding, surface be modified, heavy metal ion adsorbed and water activation；In order to will be electrical
The various excellent performances of stone give full play of used in people, to act on electrically by a variety of different pretreatment modes
Stone excites its excellent performance, and the tourmaline product enable fully demonstrates its excellent performance, this will be that tourmaline will be ground from now on
The important directions studied carefully.
In many applications of tourmaline, generally require tourmaline carrying out ultra-fine grinding；Such as it is used for textile industry, it is desirable that electrical
Stone grain diameter d97< 3 μm or d50<0.5μm.Currently, the ultra-fine tourmaline powder filler for the industry such as coating and weaving, mainly
States' imports such as Japan are relied on, therefore, tourmaline fine is the necessary guarantee of China's tourmaline application；Tourmaline Ultrafine Grinding method
It include mainly airflow milling and medium mill, airflow milling and medium grinding process are all relatively simple, but energy consumption is all larger simultaneously, low efficiency,
It is at high cost.
Summary of the invention
For existing tourmaline ultra-fine grinding processing technique above shortcomings, the present invention provides a kind of for tourmaline
The magnetic field impulse preprocess method of grinding aid pre-processes tourmaline, the electromagnetism for the high-frequency alternating that magnetic field impulse equipment generates using magnetic field impulse
Field force generates the effects of cyclic stretching, compression, shearing, bending, torsion inside the ore on the combination interface of different minerals,
Make that crack is cracked and be extended on different minerals combination interface, reduce the intensity of ore and improve mineral disaggregation characteristic, most
The gross fracture of ore is caused eventually, improves grinding efficiency.
A kind of magnetic field impulse preprocess method for tourmaline grinding aid of the invention is using tourmaline magnetic field impulse pretreatment dress
It sets, which includes general supply, transformer, rectifier, equalizing resistance, capacitor I, capacitor II, magnetic field impulse processor, IGBT intelligence
Copped wave module I, IGBT intelligence copped wave module II and control drive module composition, the general supply and transformer assembling are one
It rises, transformer is assembled together with rectifier, and rectifier both ends are in parallel with DC power supply switch, and DC power supply switch both ends are led
Equalizing resistance part, capacitive part and intelligent copped wave module section are parallel on line, equalizing resistance part is by two even resistances
It is composed in series, capacitive part is composed in series by capacitor I and capacitor II, and intelligent copped wave module section is by IGBT intelligence copped wave module I
Be composed in series with IGBT intelligence copped wave module II, control the both ends of drive module by conducting wire respectively with IGBT intelligence copped wave module
I and IGBT intelligence copped wave module II connects；Magnetic field impulse processor is made of pre-processing channel and hollow circular coil, hollow circular coil
It is looped around on the outside of pre-processing channel；One end of hollow circular coil is by the conducting wire connection between conducting wire and capacitor I and capacitor II, separately
One end is connected by the conducting wire between conducting wire and GBT intelligence copped wave module I and IGBT intelligence copped wave module II；Capacitor I, IGBT intelligence
Energy copped wave module I and hollow circular coil constitute first oscillation circuit, capacitor II, IGBT intelligence copped wave module II and hollow round wires
Circle constitutes second oscillation circuit；
Method the following steps are included:
(1) the ore treatment channel of pre-processing channel and tourmaline mine site is passed through into flanged joint；According to pretreatment
The size in channel and the tourmaline ore amount being discharged from ore treatment channel set tourmaline ore in pre-processing channel
Residence time is in 0.1~50min；
(2) general supply is opened, is converted to direct current through transformer and rectifier；DC power supply switch is opened, to tourmaline
Magnetic field impulse pretreatment unit exports 220V direct current, applies pulse current to two oscillation circuits, while passing through control driving mould
The frequency that block controls two oscillation circuits is 100~200Hz；
(3) first stage IGBT intelligence copped wave module I starts in 1ns~1000ns, promotes capacitor I to discharge, simultaneously
IGBT intelligence copped wave module II turn off, promote capacitor II charge: second stage when IGBT intelligence copped wave module I 1ns~
Shutdown in 1000ns, promotes capacitor I to charge, while IGBT intelligence copped wave module II starts, and capacitor II is promoted to discharge；Two oscillations
The current direction that circuit is generated with second stage in the first stage is on the contrary, the frequency that the frequency of electric current commutation is alternately starting and shutdown
Rate is controlled by control drive module；
(4) hollow circular coil is acted on by pulse current and generates pulsed magnetic field, to the tourmaline ore of pre-processing channel into
The pretreatment of row magnetic field impulse；
(5) tourmaline ore carries out ore grinding and forms tourmaline particle after magnetic field impulse pre-processes.
In above-mentioned tourmaline magnetic field impulse pretreatment unit, the material of pre-processing channel is HDPE superhigh molecular weight polyethylene
Alkene.
In above-mentioned tourmaline magnetic field impulse pretreatment unit, overvoltage protection is parallel on the conducting wire at DC power supply switch both ends
Device and voltmeter；Conducting wire between overvoltage protector and voltmeter is equipped with current-limiting resistance.
In above-mentioned tourmaline magnetic field impulse pretreatment unit, the conducting wire between hollow circular coil and capacitive part is equipped with electricity
Flow table.
In the above method, the intensity of the pulsed magnetic field in pre-processing channel is 5~50kA/m.
In above-mentioned step (5), the method for ore grinding are as follows: will add water and stir and be made through the pretreated tourmaline ore of magnetic field impulse
The ore pulp of mass concentration 40~70%, is then carried out with Ball-stirring mill levigate, and tourmaline powder is made in 20~30min of time.
The partial size of above-mentioned tourmaline ore is in 2~12mm.
1~50 μm of the partial size of above-mentioned tourmaline powder.
The working principle of the invention is: first being converted the industrial alternating voltage of 380V to by transformer required lower
Alternating voltage (0~220V), lower alternating voltage becomes DC voltage after rectifier, ensures two groups of electricity in equalizing resistance
Hold under common voltage condition, be controlled drive module adjusting, direct current occurs by two IGBT intelligence copped wave modules
Inversion simultaneously generates square wave, and inversion can produce continuous high frequency alternating current, and square wave may insure that electric current is stablized, i.e. continuous-stable
High frequency alternating current, and then generate the magnetic field of continuous continuous-stable；The principle of inversion is that two IGBT intelligence copped wave modules are made
For the switch control element of two oscillating circuits, the turn-off time up to nanosecond, two control switch elements alternately starting and
Shutdown, alternately starts and the frequency of shutdown is controlled by control drive module, it is ensured that two oscillating circuits are alternately charged and discharged, and are made
Two sections of coil is obtained constantly by contrary electric current, i.e., continuous high frequency alternating current.
Traditional sample pretreating method is compared, method short processing time of the invention, high production efficiency, low energy consumption；It is logical
It crosses pulsactor and magnetic field impulse, the combination interface of the electromagnetic force of high-frequency alternating different minerals inside ore is applied to ore
The effects of upper generation cyclic stretching, compression, shearing, bending, torsion, make to crack and extend on different minerals combination interface
For crack, and then improve mineral cleavage characteristic, and do not destroy mineral crystal form；The mineral grain distribution for meeting grade requirement is equal
It is even, be conducive to the deep processing of tourmaline.
Main innovation point of the invention is:
(1) be different from both at home and abroad it is currently used, form " nothing due to no current in route during capacitor charging
The device in the discrete pulse magnetic field of magnetic region ", the present invention provide a kind of continuous high frequency alternating magnetic field, have low in energy consumption, raising energy
The advantages of source utilization rate；
(2) it is different from domestic and international currently used reverse-blocking tetrode thyristor control element, the turn-off time can only achieve Millisecond water
It is flat, stable magnetic field cannot be formed；IGPT intelligence copped wave module switch control element is used in control circuit of the invention, is closed
The disconnected time forms stable high-frequency alternating magnetic field up to nanosecond, significantly improves ore treatment ability and efficiency；
(3) pre-processing channel is made of superhigh molecular weight polyethylene high abrasion-proof material, and wear-resisting property is obvious excellent in glass
Glass steel and other materials greatly improve the service life of ore treatment pipeline.
Detailed description of the invention
Fig. 1 is the tourmaline magnetic field impulse pretreatment unit circuit diagram in the embodiment of the present invention；In figure, 1, general supply,
2, transformer, 3, rectifier, 4, DC power supply switch, 5, overvoltage protector, 6, current-limiting resistance, 7, voltmeter, 8, equalizing resistance,
9-1, capacitor I, 9-2, capacitor II, 10, ammeter, 11, pre-processing channel, 12, hollow circular coil, 13-1, IGBT intelligence copped wave
Module I, 13-2, IGBT intelligence copped wave module II, 14, control drive module；
Fig. 2 is the XRD diagram of the tourmaline ore in the embodiment of the present invention 1；
Fig. 3 is the Laser particle-size distribution curve graph of the tourmaline powder of comparative test in the embodiment of the present invention 1；
Fig. 4 is the scanning electron microscope (SEM) photograph of the tourmaline powder of comparative test in the embodiment of the present invention 1；
Fig. 5 is the Laser particle-size distribution curve graph of tourmaline powder in the embodiment of the present invention 1；
Fig. 6 is the scanning electron microscope (SEM) photograph of tourmaline powder in the embodiment of the present invention 1；
Fig. 7 is the Laser particle-size distribution curve graph of the tourmaline powder of comparative test in the embodiment of the present invention 2；
Fig. 8 is the scanning electron microscope (SEM) photograph of the tourmaline powder of comparative test in the embodiment of the present invention 2；
Fig. 9 is the Laser particle-size distribution curve graph of tourmaline powder in the embodiment of the present invention 2；
Figure 10 is the scanning electron microscope (SEM) photograph of tourmaline powder in the embodiment of the present invention 2.
Specific embodiment
The control drive module used in the embodiment of the present invention is commercially available IGBT driver.
The IGBT intelligence copped wave module used in the embodiment of the present invention is commercially available insulated gate bipolar transistor.
The pre-processing channel used in the embodiment of the present invention is commercially available HDPE ultra-high molecular weight polyethylene material.
Hollow circular coil the number of turns in the embodiment of the present invention is 200, and material is copper wire, diameter 25mm.
The tourmaline ore that tourmaline magnetic field impulse pretreatment unit is discharged according to ore treatment channel in the embodiment of the present invention
The installation number of units of amount and residence time setting device.
The equipment that Laser particle-size distribution test uses in the embodiment of the present invention is Malvern MS3000 Particle Size Analyzer.
The scanning electron microscope used in the embodiment of the present invention is SSX-550 scanning electron microscope.
The voltage of power supply is 380V, frequency 50Hz in the embodiment of the present invention.
The present invention will be further described with reference to embodiments.
Embodiment 1
Tourmaline ore raw materials comes from Inner Mongol Chifeng, and partial size is in 2~12mm；Chemical multielement quality percentage is carried out to it
Than analysis, the results are shown in Table 1；
Table 1
| Component | B2O3 | SiO2 | Al2O3 | TFe | MgO | CaO | Na |
| Content/% | 7.27 | 50.05 | 18.60 | 11.37 | 3.33 | 1.76 | 0.95 |
| Component | TiO2 | FeO | P | K | S | It burns and loses | |
| Content/% | 0.84 | 0.25 | 0.078 | 0.058 | < 0.004 | 5.44 |
XRD analysis result is as shown in Figure 2；
Tourmaline magnetic field impulse pretreatment unit is as shown in Figure 1, general supply 1, transformer 2, rectifier 3, equalizing resistance 8, electricity
Hold I 9-1, II 9-2 of capacitor, magnetic field impulse processor, II 13-2 of IGBT intelligence copped wave module I 13-1, IGBT intelligence copped wave module and
Drive module 14 is controlled to form；
General supply 1 is assembled together with transformer 2, and transformer 2 is assembled together with rectifier 3,3 both ends of rectifier and straight
Galvanic electricity source switch 4 is in parallel, and equalizing resistance part, capacitive part and intelligence are parallel on the conducting wire at 4 both ends of DC power supply switch and is cut
Wave module section；
Equalizing resistance part is composed in series by two even resistances 8, and capacitive part is connected by I 9-1 of capacitor and II 9-2 of capacitor
Composition, intelligent copped wave module section are composed in series by II 13-2 of IGBT intelligence copped wave module I 13-1 and IGBT intelligence copped wave module,
Control drive module 14 both ends by conducting wire respectively with IGBT intelligence copped wave module I 13-1 and IGBT intelligence copped wave module II
13-2 connection；
Magnetic field impulse processor is made of pre-processing channel 11 and hollow circular coil 12, and hollow circular coil 12 is looped around pretreatment
11 outside of channel；
One end of hollow circular coil 12 passes through the conducting wire connection between II 9-2 of conducting wire and I 9-1 of capacitor and capacitor, the other end
It is connected by the conducting wire between II 3-2 of conducting wire and GBT intelligence copped wave module I 13-1 and IGBT1 intelligence copped wave module；
I 9-1, IGBT intelligence copped wave module I 13-1 of capacitor and hollow circular coil 12 constitute first oscillation circuit, capacitor II
II 13-2 of 9-2, IGBT intelligence copped wave module and hollow circular coil 12 constitute second oscillation circuit；
The material of pre-processing channel 11 is HDPE ultra-high molecular weight polyethylene；
Overvoltage protector 5 and voltmeter 7 are parallel on the conducting wire at 4 both ends of DC power supply switch；Overvoltage protector 5 and voltage
Conducting wire between table 7 is equipped with current-limiting resistance 6；
Conducting wire between hollow circular coil 12 and capacitive part is equipped with ammeter 10；
Method are as follows:
The ore treatment channel of pre-processing channel and tourmaline mine site is passed through into flanged joint；According to pre-processing channel
Size and the tourmaline ore amount that is discharged from ore treatment channel, set stop of the tourmaline ore in pre-processing channel
Time is in 5min；
General supply is opened, is converted to direct current through transformer and rectifier；DC power supply switch is opened, to tourmaline magnetic arteries and veins
Pretreatment unit output 220V direct current is rushed, pulse current is applied to two oscillation circuits, while passing through control drive module control
The frequency for making two oscillation circuits is 200Hz；
First stage IGBT intelligence copped wave module I starts in 1ns~1000ns, promotes capacitor I to discharge, while IGBT intelligence
Energy copped wave module II turns off, and capacitor II is promoted to charge: second stage is when IGBT intelligence copped wave module I is closed in 1ns~1000ns
It is disconnected, promote capacitor I to charge, while IGBT intelligence copped wave module II starts, capacitor II is promoted to discharge；Two oscillation circuits are first
The current direction that stage and second stage generate is on the contrary, the frequency of electric current commutation is that alternately the frequency of starting and shutdown is driven by control
The control of dynamic model block；
Hollow circular coil is acted on by pulse current and generates pulsed magnetic field, carries out magnetic to the tourmaline ore of pre-processing channel
Pulse pretreatment；The intensity of pulsed magnetic field is 39.81kA/m；
Tourmaline ore adds water and stirs the ore pulp that mass concentration 60% is made after magnetic field impulse pre-processes, then with stirring
Mill progress is levigate, and tourmaline powder is made in time 20min；25.61 μm of the partial size of tourmaline powder, specific surface area 1.1m2/kg；Granularity
Distribution tests result is as shown in figure 5, electron-microscope scanning result is as shown in Figure 6；
Identical ore is pre-processed, directly progress ore grinding without pulse, is tested as a comparison；The tourmaline powder of acquisition
Test results are shown in figure 3 for Laser particle-size distribution, and electron-microscope scanning result is as shown in Figure 4；44.57 μm of the partial size of tourmaline powder, than
Surface area 0.24m2/kg；
As seen from the figure, it is handled when without magnetic field impulse, when being directly crushed using Ball-stirring mill, grade model locating for tourmaline powder
Width is enclosed, the overwhelming majority is within the scope of coarse fraction；After using magnetic field impulse pretreatment, tourmaline powder median reduces, and has more
More coarse granules is levigate；Specific surface area also has certain raising, and magnetic field impulse pretreatment can it can be seen from scanning electron microscope map
So that tourmaline particle surface generates micro-crack, increase its specific surface area.
Embodiment 2
Tourmaline ore raw materials comes from Altay Mountains, and partial size is in 2~12mm；, color Dark grey；
Chemical formula NaFe3Al6Si6O18(BO3)3(OH)4；The results are shown in Table 2 for chemical composition analysis mass percent；
Table 2
| Component | SiO2 | Al2O3 | Fe2O3 | B2O3 | CaO | MgO | Na2O | TiO2 |
| Content/% | 47.8678 | 17.6742 | 16.9857 | 9.8641 | 2.6956 | 2.6949 | 1.2917 | 0.9260 |
Tourmaline magnetic field impulse pretreatment unit is the same as embodiment 1；
With embodiment 1, difference is method:
(1) residence time of the setting tourmaline ore in pre-processing channel is in 10min；
(2) ore pulp that mass concentration 50% is made is added water and stirred, is then carried out with Ball-stirring mill levigate, time 30min is made
Tourmaline powder；40.79 μm of the partial size of tourmaline powder, specific surface area 6.46m2/kg；Particle size distribution test result is as shown in figure 9, electricity
The results are shown in Figure 10 for scarnning mirror；
Identical ore is pre-processed, directly progress ore grinding without pulse, is tested as a comparison；The tourmaline powder of acquisition
Test results are shown in figure 7 for Laser particle-size distribution, and electron-microscope scanning result is as shown in Figure 8；1.8 μm of the partial size of tourmaline powder, compares table
Area 4.4m2/kg；
As seen from the figure, when handling without magnetic field impulse, tourmaline particle median is most carefully 1.8 μm, grinding particle size
Unevenly；After using magnetic field impulse pretreatment, partial size is most carefully 0.79 μm, and most of particle concentrates on relatively narrow thin rank model
In enclosing, small part is in thick level range, and fine grinding effect is obvious；Magnetic field impulse pretreatment can be such that tourmaline powder surface generates
Micro-crack increases its specific surface area.
Claims (7)
1. a kind of magnetic field impulse preprocess method for tourmaline grinding aid, it is characterised in that using tourmaline magnetic field impulse pretreatment dress
It sets, which includes general supply, transformer, rectifier, equalizing resistance, capacitor I, capacitor II, magnetic field impulse processor, IGBT intelligence
Copped wave module I, IGBT intelligence copped wave module II and control drive module composition, the general supply and transformer assembling are one
It rises, transformer is assembled together with rectifier, and rectifier both ends are in parallel with DC power supply switch, and DC power supply switch both ends are led
Equalizing resistance part, capacitive part and intelligent copped wave module section are parallel on line, equalizing resistance part is by two even resistances
It is composed in series, capacitive part is composed in series by capacitor I and capacitor II, and intelligent copped wave module section is by IGBT intelligence copped wave module I
Be composed in series with IGBT intelligence copped wave module II, control the both ends of drive module by conducting wire respectively with IGBT intelligence copped wave module
I and IGBT intelligence copped wave module II connects；Magnetic field impulse processor is made of pre-processing channel and hollow circular coil, hollow circular coil
It is looped around on the outside of pre-processing channel；One end of hollow circular coil is by the conducting wire connection between conducting wire and capacitor I and capacitor II, separately
One end is connected by the conducting wire between conducting wire and GBT intelligence copped wave module I and IGBT intelligence copped wave module II；Capacitor I, IGBT intelligence
Energy copped wave module I and hollow circular coil constitute first oscillation circuit, capacitor II, IGBT intelligence copped wave module II and hollow round wires
Circle constitutes second oscillation circuit；
Method the following steps are included:
(1) the ore treatment channel of pre-processing channel and tourmaline mine site is passed through into flanged joint；According to pre-processing channel
Size and the tourmaline ore amount that is discharged from ore treatment channel, set stop of the tourmaline ore in pre-processing channel
Time is in 0.1~50min；
(2) general supply is opened, is converted to direct current through transformer and rectifier；DC power supply switch is opened, to tourmaline magnetic arteries and veins
Pretreatment unit output 220V direct current is rushed, pulse current is applied to two oscillation circuits, while passing through control drive module control
The frequency for making two oscillation circuits is 100~200Hz；
(3) first stage IGBT intelligence copped wave module I starts in 1ns~1000ns, promotes capacitor I to discharge, while IGBT intelligence
Energy copped wave module II turns off, and capacitor II is promoted to charge: second stage is when IGBT intelligence copped wave module I is closed in 1ns~1000ns
It is disconnected, promote capacitor I to charge, while IGBT intelligence copped wave module II starts, capacitor II is promoted to discharge；Two oscillation circuits are first
The current direction that stage and second stage generate is on the contrary, the frequency of electric current commutation is that alternately the frequency of starting and shutdown is driven by control
The control of dynamic model block；
(4) hollow circular coil is acted on by pulse current and generates pulsed magnetic field, carries out magnetic to the tourmaline ore of pre-processing channel
Pulse pretreatment；
(5) tourmaline ore carries out ore grinding and forms tourmaline particle after magnetic field impulse pre-processes.
2. a kind of magnetic field impulse preprocess method for tourmaline grinding aid according to claim 1, it is characterised in that described
Tourmaline magnetic field impulse pretreatment unit in, the material of pre-processing channel is HDPE ultra-high molecular weight polyethylene.
3. a kind of magnetic field impulse preprocess method for tourmaline grinding aid according to claim 1, it is characterised in that described
Tourmaline magnetic field impulse pretreatment unit in, be parallel with overvoltage protector and voltmeter on the conducting wire at DC power supply switch both ends；
Conducting wire between overvoltage protector and voltmeter is equipped with current-limiting resistance.
4. a kind of magnetic field impulse preprocess method for tourmaline grinding aid according to claim 1, it is characterised in that described
Tourmaline magnetic field impulse pretreatment unit in, conducting wire between hollow circular coil and capacitive part is equipped with ammeter.
5. a kind of magnetic field impulse preprocess method for tourmaline grinding aid according to claim 1, it is characterised in that step
(4) in, the intensity of the pulsed magnetic field in pre-processing channel is 5~50kA/m.
6. a kind of magnetic field impulse preprocess method for tourmaline grinding aid according to claim 1, it is characterised in that step
(5) in, the method for ore grinding are as follows: mass concentration 40~70% is made by adding water and stirring through the pretreated tourmaline ore of magnetic field impulse
Ore pulp, is then carried out with Ball-stirring mill levigate, and tourmaline powder is made in 20~30min of time.
7. a kind of magnetic field impulse preprocess method for tourmaline grinding aid according to claim 6, it is characterised in that described
1~50 μm of partial size of tourmaline powder.
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|---|---|---|---|---|
| CN114929395A (en) * | 2019-12-27 | 2022-08-19 | “无机材料技术”有限责任公司 | Electromagnetic ore processing method and implementing device thereof |
| CN114929395B (en) * | 2019-12-27 | 2023-09-12 | “无机材料技术”有限责任公司 | Electromagnetic ore processing method and implementation device thereof |
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Application publication date: 20190802 |