CN208018787U - A kind of efficient magnetic force classification machine - Google Patents
A kind of efficient magnetic force classification machine Download PDFInfo
- Publication number
- CN208018787U CN208018787U CN201820574423.8U CN201820574423U CN208018787U CN 208018787 U CN208018787 U CN 208018787U CN 201820574423 U CN201820574423 U CN 201820574423U CN 208018787 U CN208018787 U CN 208018787U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- outside
- magnetic force
- radial sector
- feeding tube
- 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.)
- Active
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model is related to a kind of efficient magnetic force classification machines, including：Mine feeding tube, mineral-feeding pipe on mine feeding tube is tangentially set, the assorting cylinder that is arranged on the outside of mine feeding tube and the overflow launder on assorting cylinder top is set, it is characterized in that the assorting cylinder is changeable radial sector cylinder, in the outside of changeable radial sector cylinder, from top to bottom concentric locking collar is equipped with several magnet exciting coils, closing outer barrel is equipped on the outside of several magnet exciting coils, it is tangentially equipped with feed pipe in changeable radial sector cylinder lower outside, the base cone of back taper tubular is installed in changeable radial sector cylinder lower part, concentration sensor is installed in the lower part of base cone, electronic ore discharge valve is installed in the lower part of concentration sensor.The utility model has the advantages that：Simple in structure, classification efficiency is high, can replace fine screening classification operation, reduce preparation equipment hop count, and original one third can be reduced to by regrinding board number, energy-saving, and Concentrate cost is greatly lowered, and factory's economic benefit is selected in raising.
Description
Technical field
The utility model belongs to hydraulic classification equipment technical field, and in particular to a kind of to be used for what ore dressing plant magnetic iron ore was classified
Efficient magnetic force classification machine.
Background technology
Currently, the classifying equipoment that magnetite separation factory uses in process of production, can be divided into two kinds by classification principle：First
Kind be in the compound force field of gravity or gravity and centrifugal force, it is different according to the sinking speed of particle in a fluid and be classified
Classifying equipoment；Second is the sieve classification equipment being classified according to the size of grain graininess.
Include by the equipment being classified in the compound force field of gravity or gravity and centrifugal force：Spiral classifier, hydrocyclone,
Cone classifier machine and flute profile grader etc..These press the equipment of gravity classification, and the product to settle down, which is sand return or sand setting, to be needed
It returns to ball mill to regrind, the product overflowed is qualified products, needs to be sent to hypomere operation and goes to sort.
Waterpower hydrocyclone is mainly made of cylinder cylinder, tangent line mineral-feeding pipe, overflow pipe, cone, sand settling mouth, waterpower
Cyclone is squeezed by mineral-feeding pipe pump to mine using the equipment of centrifugal principle classification, will be by weight by high speed rotation centrifugal force
The particle of power big (coarse grain and weight are big) gets rid of to periphery and sinks down into base opening and be discharged and go to regrind；It is stayed by the small fine grained Stagnation of gravity
It is taken out of to overflow in axis and by rotation ascending current.But cyclone overflow is purpose product, and underflow is to need to return to mill
The product that machine is regrinded, and there is derichment effect, that is, the elemental metals mineral grain dissociated easily to enter underflow for its underflow, to again
It is unreasonable for having gone to regrind.
Cone classifier is different by the gravity that processing material is received and is classified.Ore pulp is fed by mineral-feeding pipe, through central tube
Eddy flow feeds the middle and upper part of cone slot, while feeding ascending current by bottom；Coarse particles subsidence velocity is more than ascending current impulse force
And sink, finally by bottom output coarse particles product；SEDIMENTATION FOR FINE PARTICLE speed rises less than ascending current speed, by overflow
It overflows.There is also the effects of underflow derichment for cone classifier, if going to regrind the metallic ore particle there is also monomer dissociation
Overground phenomenon.
Mechanical agitation type flute profile grader is similar with cone classifier, and it is better to be only classified situation.Circular cone point
Grade machine and flute profile grader classification principle are all hindered settling principle.
The product of ball mill discharge is the mixture of some mineral and gangue, and the mixture is by monomer for magnetic iron ore
Magnetite ore particles, the intergrowth of magnetic iron ore and gangue mineral and monomer gangue mineral particle composition.The wherein proportion of magnetic iron ore
The proportion of (4.9~5.2) greatly, gangue is small (2.2~3.5).
By the various classifying equipoments that gravity or gravity and centrifugal force composite force are classified because the sinking speed of particle not only with
Size, the shape of particle are related, and also related with proportion, are to be classified according to containing proportion factor " hydraulic diameter ", no
It is to be classified according to the geometric dimension of particle, classification principle feature has " there is finesse in sb.'s roughness ", " detail has slightly ".Therefore, this
The classification efficiency of equipment is neither high, and there is also derichment phenomenon (because the ratio of magnetic iron ore are great), cause a large amount of middle coarse grain monomers
Magnetic iron ore enters sand return or sand setting).Its extension set efficiency is only generally 30%~50% in actual production, as a result some is caused to be less than
The monomer magnetic iron ore of partition size is mixed into sand return or sand setting, and returns ball mill and regrind, and causes overground.
Include by the equipment of grading：Vibrating screen, sieve bend, dusting cover etc..These press the product of the equipment of grading
It is divided into the upper product of sieve and undersized product, product needs return ball mill to regrind on sieve, is only what separation operation to be sent to was gone under sieve
Product.
By the various sieve classification equipment of grading, since screen size is tiny, generally 0.1mm~0.2mm, screening
Inefficient, containing a large amount of particle for being less than screen size in product on sieve, many of which particle is monomer dissociation
Magnetite ore particles, return ball mill and regrind, fail to enter under sieve, to also not entering separation operation.
The magnetic iron ore for containing a large amount of monomer dissociations in the upper product of sand setting or sieve of above two classifying equipoment, due to
They return to ball mill and regrind again, to not only causing the overground of monomer magnetic iron ore, but also too big pernicious of middling cycle amount are caused to follow
Ring phenomenon reduces the grinding efficiency for really needing the intergrowth regrinded, and reduces ball mill processing newly to the ability of mine.
In conclusion research and development can reduce the sand setting of existing classifying equipoment or the magnet of monomer dissociation in the upper product of sieve
The high-effective classifying equipment of mine particle is necessary.
Invention content
The purpose of this utility model is to provide a kind of efficient magnetic force classification machine high to fine-grained magnetite classification efficiency.
The utility model is achieved through the following technical solutions：
A kind of efficient magnetic force classification machine of the utility model, including mine feeding tube, are tangentially arranged on mine feeding tube
Mineral-feeding pipe, the assorting cylinder being arranged on the outside of mine feeding tube and is arranged the overflow launder on assorting cylinder top, it is characterised in that point
Grade cylinder is changeable radial sector cylinder, and in the outside of changeable radial sector cylinder, from top to bottom concentric locking collar is equipped with several magnet exciting coils, if
It is equipped with closing outer barrel on the outside of dry magnet exciting coil, feed pipe is tangentially equipped in changeable radial sector cylinder lower outside, more
Reducing assorting cylinder lower part is equipped with the base cone of back taper tubular with one heart, concentration sensor is equipped with one heart in the lower part of base cone, dense
The lower part of degree sensor is equipped with electronic ore discharge valve.
The changeable radial sector cylinder from top to bottom has 4 to 8 undergauges, and total undergauge ratio is 1.5~2.0, and minimum diameter
More than the diameter of mine feeding tube.
The overflow launder is in open-like shape, and opening is than being 1.1~1.15.
Several described magnet exciting coils, magnetic field intensity from top to bottom become larger, and the magnetic field at magnet exciting coil center is strong
Degree adjustable range is 6.4~20kA/m.
The classification process of the utility model：
The middle and upper part that mine feeding tube rotation is downwardly into changeable radial sector chamber is fed by mineral-feeding pipe eddy flow, by being arranged from top to bottom
Multiple magnet exciting coils generate the magnetic field force that moves down pull downward on magnetic ore particle, in bottom gape discharge high concentration it is high-grade
Underflow, under the high speed rotation ascending current effect that lower part feed pipe introduces, by the monomer gangue and magnetic iron ore and arteries and veins in ore pulp
The intergrowth of stone rushes band to overflow.
Overflow product is the chats for needing regrinding and reconcentration supplemented by the intergrowth of magnetic iron ore and gangue based on monomer gangue；
Underflow is high-grade sand setting.
Now the design feature of the efficient magnetic force classification machine of the utility model and performance are classified with hydrocyclone, circular cone
Machine, groove profile grader and fine screening classification are compared, and are shown in Table 1.
1 five kinds of grader design features of table and performance comparison table
In conclusion in terms of product whereabouts, cyclone overflow is purpose product, and efficiently magnetic force classification machine underflow is to be able to
The purpose product of enrichment.Although cone classifier and flute profile grader underflow are purpose products, its settling capacity is all gravity；And
Magnetic force classification machine settling capacity is mainly magnetic force, gravity only supplemented by；Structurally, circular cone and flute profile grader are the cones to stand upside down
Body or the square chest cone of handstand, and magnetic force classification machine is then the more reducing cones to stand upside down；Dusting cover is the equipment by grading,
Classification principle is classified by slot size and the unconcerned sorting power of stream, and undersized product is purpose product, is to need again on sieve
The product of mill.
For magnetic force classification machine compared with other four kinds of classifying equipoments, maximum difference is other four kinds of classifying equipoments point
Grade principle, or be the centrifugal force of centrifugal force field, or be the gravity of earth gravitational field, or under the effect of gravity according to the big of sieve pore
The unconcerned lamination of small and stream, the particulate less than sieve pore enter under sieve；And the classification principle of magnetic force classification machine be move down magnetic field force with
The composite force of gravity, and down force is mainly the magnetic force of field of magnetic forece.
The utility model has the advantages that：
The utility model and traditional classifying equipoment, especially compared with fine screening classification equipment, the underflow of the utility model
Yield is higher than 30 percentage points of yield under the sieve of dusting cover or more, and underflow Iron grade is also higher than dusting cover undersized product grade, generally
Under the conditions of to mine grade 62%~65%, underflow grade is up to 66%~68% or more.
Since the assorting cylinder of the utility model is changeable radial sector cylinder, and from top to bottom concentric locking collar is strong equipped with several magnetic fields
The from top to bottom gradual increased magnet exciting coil of degree, the classification suitable for feed preparation unit size≤0.3mm is to mine.Do not have derichment effect,
Fine screening classification operation can be replaced, preparation equipment hop count is reduced, original one third can be reduced to by regrinding board number, energy-saving,
Concentrate cost is greatly lowered, improves the economic benefit for selecting factory.
Description of the drawings
Fig. 1 is efficient magnetic force classification machine structural schematic diagram.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of efficient magnetic force classification machine of the utility model, including mine feeding tube 2, tangentially it is arranged
Mineral-feeding pipe 1 on mine feeding tube 2 is arranged the assorting cylinder on the outside of mine feeding tube 2 and the overflow launder 3 on assorting cylinder top is arranged, special
Sign is that the assorting cylinder is changeable radial sector cylinder 4, and the assorting cylinder 4 from top to bottom has 4 to 8 undergauges, total undergauge ratio
It is 1.5~2.0, and minimum diameter is more than the diameter of mine feeding tube 2；It is from top to bottom set with one heart in the outside of changeable radial sector cylinder 4
There are several magnet exciting coils 5, closing outer barrel 6 is equipped in several 5 outsides of magnet exciting coil, in changeable 4 lower outside of radial sector cylinder
It is tangentially equipped with feed pipe 7, the base cone 8 of back taper tubular is installed with one heart in changeable 4 lower part of radial sector cylinder, in base cone 8
Lower part is equipped with concentration sensor 9 with one heart, and electronic ore discharge valve 10 is equipped in the lower part of concentration sensor 9.Due to this practicality
Novel assorting cylinder is changeable radial sector cylinder, and from top to bottom concentric locking collar equipped with several from top to bottom encouraging of becoming larger of magnetic field
Magnetic coil, the classification suitable for feed preparation unit size≤0.3mm reduce preparation equipment hop count and number of units to mine instead of dusting cover operation,
Reduce equipment cost.Underflow yield is higher than 30 percentage points of yield under the sieve of dusting cover or more simultaneously, and underflow grade is also higher by
1~3 percentage point of dusting cover undersized product, underflow grade is up to 66%~68% or more.
Because fine screening classification drawback used in scene is very big, hereby to mine and its sieved under upper, sieve with the dusting cover of certain magnetite separation factory
Product is carried out pair as classification contrast test object using the test-type magnetic force classification machine of Laboratary type dusting cover and the utility model
Than experiment, analysis comparative test result, which can obtain, such as draws a conclusion：
1) laboratory dusting cover undersized product yield is only 41.90%, and magnetic force classification machine underflow yield is up to 89.75%,
The latter is higher by 47.85 percentage points than the former, and its grade is also higher by 1.08 percentage points；Magnetic force classification machine overflow iron simultaneously
Grade Iron grade also upper than dusting cover sieve is 48.21 percentage points low, to prevent a large amount of lists in the upper product of dusting cover sieve
The magnetite ore particles of body dissociation, which go to regrind, causes serious overground drawback.
2) the upper product of laboratory dusting cover sieve and magnetic force classification machine overflow are the non-purpose product of classification, they are to need to return
The chats that ball mill is regrinded, the two is quantitatively widely different, the former (on dusting cover sieve) yield is 58.10%, the latter's (magnetic force point
Grade machine overflow) yield is 10.25%, the latter is only the former 1/5.67th.That is, it is assumed that they all return and regrind, in
The mine amount of regrinding, the amount of regrinding of magnetic force classification machine are only 1/the 5.67 of dusting cover.If in this way, original, to regrind board number be 6, when
It after replacing dusting cover with magnetic force classification machine, regrinds board number and can be changed to 1, so as to substantially reduce the power consumption and steel of ball mill
Consumption.For the magnetite separation factory of 5,000,000 t of year processing raw ore amount, if scene be 2700 × 3600mm of Φ again
Abrading-ball grinding machine, then year economize on electricity is up to (400kw × 5 × 0.85 × for 24 hours × 365 day × 0.9=) 1340.3 ten thousand kwh (degree), year
It is (0.6kg/t former × 5,000,000 t=) 3,000,000 kg=to save steel consumption (including steel ball and ball milling liner plate, unit consumption 0.6kg/t raw ores)
3000t, only about 18,540,000 yuan of economize on electricity section steel total price.
Claims (4)
1. a kind of efficient magnetic force classification machine, including：Mine feeding tube, is tangentially arranged the mineral-feeding pipe on mine feeding tube, and setting exists
Assorting cylinder on the outside of mine feeding tube and the overflow launder on assorting cylinder top is set, it is characterised in that the assorting cylinder is that changeable diameter divides
Grade cylinder, in the outside of changeable radial sector cylinder, from top to bottom concentric locking collar is equipped with several magnet exciting coils, outside several magnet exciting coils
Side is equipped with closing outer barrel, feed pipe is tangentially equipped in changeable radial sector cylinder lower outside, in changeable radial sector cylinder lower part
The base cone of back taper tubular is installed, concentration sensor is installed in the lower part of base cone, electricity is installed in the lower part of concentration sensor
Dynamic ore discharge valve.
2. a kind of efficient magnetic force classification machine according to claim 1, it is characterised in that the changeable radial sector cylinder according to
Assorting cylinder diameter from top to bottom has 4 to 8 undergauges, minimum diameter to be more than the diameter of mine feeding tube.
3. a kind of efficient magnetic force classification machine according to claim 1, it is characterised in that the overflow launder is in open-like shape, is opened
Mouth is than being 1.1~1.15.
4. a kind of efficient magnetic force classification machine according to claim 1, it is characterised in that several described magnet exciting coils,
Magnetic field intensity from top to bottom becomes larger, and the magnetic field intensity adjustable range at magnet exciting coil center is 6.4~20kA/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820574423.8U CN208018787U (en) | 2018-04-20 | 2018-04-20 | A kind of efficient magnetic force classification machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820574423.8U CN208018787U (en) | 2018-04-20 | 2018-04-20 | A kind of efficient magnetic force classification machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208018787U true CN208018787U (en) | 2018-10-30 |
Family
ID=63911053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820574423.8U Active CN208018787U (en) | 2018-04-20 | 2018-04-20 | A kind of efficient magnetic force classification machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208018787U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435415A (en) * | 2018-04-20 | 2018-08-24 | 刘阳 | A kind of efficient magnetic force classification machine |
| CN109794352A (en) * | 2019-03-04 | 2019-05-24 | 太原理工大学 | A kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying |
-
2018
- 2018-04-20 CN CN201820574423.8U patent/CN208018787U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435415A (en) * | 2018-04-20 | 2018-08-24 | 刘阳 | A kind of efficient magnetic force classification machine |
| CN109794352A (en) * | 2019-03-04 | 2019-05-24 | 太原理工大学 | A kind of three product axial magnetic field magnetic force cyclones for magnetic iron ore sorting classifying |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101428248B (en) | Beneficiation method for recycling specularite | |
| CN105107616B (en) | A kind of method for effectively improving low-grade vanadium titano-magnetite beneficiating efficiency | |
| CN109351467A (en) | A kind of sorting process based on the iron mineral disseminated grain size processing red mixed ore of magnetic | |
| CN108212506A (en) | A kind of classification pre-selection of magnetic-red-water chestnut compound iron ore, fine New Method for Sorting | |
| CN105289837B (en) | The technique that a kind of utilization barite fluorite mineral intergrowth prepares blanc fixe | |
| CN109013037B (en) | Magnetite beneficiation process for improving coarse fraction tailing content and mill processing capacity | |
| CN108380379B (en) | Efficient and environment-friendly beneficiation method for low-grade magnetite | |
| CN110743685B (en) | Method for preparing superfine high-whiteness micro powder by removing impurities from granite fine particle powder in full size fraction | |
| CN107520042A (en) | A kind of separation system and sorting process of spodumene raw ore dense media | |
| CN109046743B (en) | Composite force field separator for separating magnetite and separation method thereof | |
| CN105536984B (en) | A kind of magnetic selection method having both tailings discarding by preconcentration and thickness grading and three product magnetic separators | |
| CN110743684B (en) | Method for preparing ceramic raw material from granite stone waste stone | |
| CN110882829A (en) | Coarse particle tailing discarding sorting system based on hydraulic flotation technology | |
| CN106964480B (en) | A kind of fine grinding sorted suitable for micro fine particle magnetite stone-hierarchical composition new process | |
| CN105728156A (en) | Preparation technology of super pure coal | |
| CN208018787U (en) | A kind of efficient magnetic force classification machine | |
| CN207169977U (en) | A kind of separation system of spodumene raw ore dense media | |
| CN106824500A (en) | Cambered surface sprawls film concentration machine | |
| CN109201354A (en) | MAGNETIC HYDROCYCLONES, magnetic reconnection conjunction separation system and the magnetic reconnection selected for weak magnetic mineral closes the method sorted | |
| CN104492615A (en) | Grinding classification method | |
| CN108435415A (en) | A kind of efficient magnetic force classification machine | |
| CN108927281A (en) | A kind of gold mine grinding classification system and grind grading treatment process | |
| CN105170283B (en) | The grinding classification system and method for a kind of controllable iron mineral derichment | |
| CN209379185U (en) | A kind of spodumene high density sorting complete set of equipments | |
| CN207169971U (en) | A kind of fine graded special hydrocyclone of magnetizing roast |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |