CN217313784U - Three-section crushing and screening device for electric melting chromium oxide - Google Patents
Three-section crushing and screening device for electric melting chromium oxide Download PDFInfo
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- CN217313784U CN217313784U CN202220047736.4U CN202220047736U CN217313784U CN 217313784 U CN217313784 U CN 217313784U CN 202220047736 U CN202220047736 U CN 202220047736U CN 217313784 U CN217313784 U CN 217313784U
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Abstract
The utility model discloses a three-section crushing and screening device of electric smelting chromium oxide, including tertiary crushing, promotion, screening and two-stage magnetic separation device, jaw breaker one, jaw breaker two set gradually in the left side bottom position of device, the right side of next-door neighbour jaw breaker two is provided with bucket elevator one, the lower part of feed bin one is provided with the preliminary election screening machine, the lower part of preliminary election screening machine is provided with pair roller crusher, the right side of pair roller crusher is provided with bucket elevator two, the right side of feed bin three is provided with bucket elevator three, the right side upper portion of bucket elevator three is provided with two sets of magnetic separators, the rear end of magnetic separator one is provided with two sets of screening machines; this device equipment flow is short, can realize the material crushing of different particle diameters, sends into the material crushing device circulation breakage with the material through multistage screening, and whole breakage, screening flow are easily controlled, improve crushing efficiency and screening efficiency, and the dust removal processing is convenient for concentrate to the equipment overall arrangement compactness, reduces environmental pollution and energy resource consumption.
Description
Technical Field
The utility model belongs to the technical field of the broken screening production of chromic oxide, concretely relates to three-section crushing and screening device of electric smelting chromic oxide.
Background
In the production process of the electric melting chromium oxide product, the chromium oxide is large in fineness, small in volume weight and loose in volume, so that the chromium oxide cannot be pressed into a blank body, even if the pressed blank body is greatly shrunk in volume in the firing process, and the difficulty of the production process of the product is increased, therefore, the chromium oxide is prepared into a chromium oxide clinker by a sintering method or an electric melting method, then the melted large block of electric melting chromium oxide is subjected to a multi-stage crushing process to form the electric melting chromium oxide granules and powder which have black crystals, are increased in density and are easy to press into bricks, the granularity of the electric melting chromium oxide is mainly divided into several granularity levels of 4-3 mm, 3-2 mm, 2-1 mm, 1-0 mm and the like, and the electric melting chromium oxide granules and powder are the main raw materials for producing the high-chromium refractory materials.
At present, in production, more crushing and screening devices are used for large-block electrofused chromium oxide, the device flow is long, the arrangement is dispersed, the dust amount is large, the control is not easy, and the environmental pollution is serious; because the energy consumption for crushing the materials with the same granularity is much less than that for grinding during material processing, the granularity of the crushed final product is reduced as much as possible, the cost of the grinding material is reduced, and the economic benefit is improved.
Disclosure of Invention
The utility model discloses a solve above-mentioned technical problem, provide a three-section crushing and screening device of electric smelting chromium oxide, design equipment and flow are simple, and the overall arrangement is compact to be convenient for concentrate the dust removal processing, reduces environmental pollution, reduces energy resource consumption and cost, improves economic benefits.
The utility model adopts the technical proposal that: a three-section crushing and screening device for electro-fused chromium oxide comprises a three-stage crushing, lifting, screening and two-stage magnetic separation device, wherein a first jaw crusher and a second jaw crusher are sequentially arranged at the bottom of the left side of the device, a raw material bin is arranged at the upper part of the second jaw crusher, the first jaw crusher is connected with the raw material bin through a conveying belt, a first bucket elevator is arranged at the right side close to the second jaw crusher, a first bin is arranged at the upper part of the right side of the first bucket elevator, a pre-selection screening machine is arranged at the lower part of the first bin, the pre-selection screening machine is connected with the second jaw crusher through a first return conveying belt, a pair roller crusher is arranged at the lower part of the pre-selection screening machine, a second bucket elevator is arranged at the right side of the pair roller crusher, a second bin is arranged at the upper part of the right side of the second bucket elevator, a first bin is arranged at the lower part of the second bin, and the first screening machine is connected with the pair roller crusher through a second return conveying belt, the lower part of the first screening machine is provided with a third storage bin, the right side of the third storage bin is provided with a third bucket elevator, the upper part of the right side of the third bucket elevator is provided with two groups of magnetic separators, the first magnetic separator in the two groups of magnetic separators selects out granular materials, the second magnetic separator selects out powder materials, and the rear end of the first magnetic separator is provided with a second screening machine and a third screening machine.
The screening machine is a resonance screen, the size of a screen hole of the preselection screening machine is 4-15mm, the size of a screen hole of the second screening machine is 1-2mm, and the size of a screen hole of the third screening machine is 3-4 mm.
The bucket elevator is an inflow type feeding device.
The jaw crusher and the double-roll crusher are both arranged below the ground; the discharge granularity of the jaw crusher I is 50-100mm, the discharge granularity of the jaw crusher II is 20-60mm, and the discharge granularity of the double-roll crusher is 2-15 mm.
The magnetic separator is a dry magnetic separator.
The conveying belt and the return conveying belt are both closed belt conveyors; and environment-friendly dust hoods are arranged at the jaw crusher and the double-roll crusher.
The working process of the three-section crushing and screening device for the electric melting chromium oxide is as follows: conveying large-sized electrofused chromium oxide materials to a jaw crusher I for coarse crushing operation, crushing the materials to 3-5 cm in size by the jaw crusher I, conveying the materials to a raw material bin by a conveying belt, discharging the materials to a jaw crusher II for fine crushing operation, lifting the finely crushed materials from the bottom to a bin I at the upper part by a bucket elevator I, discharging the materials to a pre-selection screening machine, returning screened materials to the jaw crusher II through a return conveyor I for circulating fine crushing operation, falling the screened materials into a double-roller crusher for fine crushing operation, lifting the finely crushed materials from the bottom to the bin II at the upper part by the bucket elevator II, falling the materials in the bin II onto the screening machine I, returning the screened materials to the roller crusher through the return conveyor II for circulating fine crushing operation, and continuously falling the screened materials into a bin III at the bottom, and thirdly, lifting the mixture to two groups of magnetic separators at the upper part through a bucket elevator, enabling the granules selected by the first magnetic separator to enter two subsequent groups of screening machines, screening the granules by the second screening machine to obtain granules of 2-1 mm and 1-0 mm, screening the granules by the third screening machine to obtain granules of 4-3 mm and 3-2 mm, and selecting powder by the second magnetic separator. Thus, the four kinds of fused chromium oxide particle material finished products with the granularity specifications are crushed and screened by the three-stage crushing, lifting, screening and two-stage magnetic separation device and respectively enter the next procedure.
The jaw crusher and the double-roll crusher are both arranged below the ground; the discharge granularity of the jaw crusher I is 50-100mm, the discharge granularity of the jaw crusher II is 20-60mm, and the discharge granularity of the double-roll crusher is 2-15 mm; the purpose of this is: the whole device is designed in a three-dimensional mode, the bucket elevator and the screening machine are arranged on the crusher, the equipment arrangement is compact, the flow between equipment is shortened, the operation efficiency is improved, the equipment arrangement is compact, the centralized dust removal treatment is facilitated, the environmental pollution is reduced, the energy consumption and the cost are reduced, and the operation and maintenance cost is reduced. The large-sized electro-smelting chromium material is classified and screened section by adopting closed-circuit crushing and screening operation, a large amount of circulating load is added into the feeding of the crusher to enable the material to be relatively thin, the circulating load is slightly crushed to form a qualified intermediate material product, and when the crusher works in a closed circuit, the crusher can work at full load and high efficiency, so that the production capacity is improved.
The screening machine is a resonance screen, the size of a screen hole of the preselection screening machine is 4-15mm, the size of a screen hole of the second screening machine is 1-2mm, and the size of a screen hole of the third screening machine is 3-4 mm; the purpose of this is: the fine particle part is screened out from the feeding of all the crusher stages, the productivity of the crusher is increased, over-crushing is avoided, the fine particle part is screened into a plurality of stages according to the granularity, and the fine particle part is respectively treated, so that the sorting effect is improved. Through material screening plant, can realize the multi-stage screening of material according to the demand of different particle sizes, the material after the multi-stage screening is sent into material breaker again and is broken, can realize the material breakage of different particle sizes, has improved screening efficiency and output.
The bucket elevator is an inflow type feeding device; the conveying belt and the return conveying belt are both closed belt conveyors; the purpose of this is to: the bucket elevator is a mechanical conveying device of a fixing device, is used for continuously and vertically lifting powdery, granular and small materials, occupies small space, and has the obvious advantages of large conveying capacity, high lifting height, stable operation, good reliability and long service life; the bucket elevator is provided with the casing to prevent dust in the bucket elevator from flying, and the conveying belt and the return conveyer belt are closed belt conveying materials, so that the sealing performance is good, and the environmental pollution is reduced.
The utility model has the advantages that: the device has the advantages of short equipment flow, strong adaptability, capability of realizing material crushing of different particle sizes, feeding materials into the material crushing device for circular crushing through multi-stage screening, easiness in control of the whole crushing and screening flows, capability of continuous production, improvement of crushing efficiency and screening efficiency, improvement of equipment processing capacity, compact equipment layout, convenience in centralized dust removal treatment, reduction of environmental pollution, energy consumption and cost, reduction of operation and maintenance cost and improvement of economic benefits.
Drawings
Figure 1 is the structure schematic diagram of the three-section crushing and screening device of the utility model.
The labels in the figure are: 1. a first jaw crusher; 2. a jaw crusher II; 3. a conveyor belt; 4. a raw material bin; 5. a bucket elevator I; 6. A bucket elevator II; 7. a bucket elevator III; 8. a double-roll crusher; 9. a first storage bin; 10. a second storage bin; 11. a third storage bin; 12. pre-selecting a screening machine; 13. a first magnetic separator; 14. a second magnetic separator; 15. screening machine I; 16. screening machine II; 17. screening machine III; 18. a first material returning conveying belt; 19. and a second material returning conveying belt.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in the figure, the three-section crushing and screening device for the electro-melting chromium oxide comprises three-stage crushing, lifting and screening devices and two-stage magnetic separation devices, a jaw crusher I1 and a jaw crusher II 2 are sequentially arranged at the bottom position of the left side of the device, a raw material bin 4 is arranged on the upper portion of the jaw crusher II 2, the jaw crusher I1 is connected with the raw material bin 4 through a conveying belt 3, a bucket elevator I5 is arranged on the right side close to the jaw crusher II 2, a bin I9 is arranged on the upper portion of the right side of the bucket elevator I5, a pre-selection screening machine 12 is arranged on the lower portion of the bin I9, the pre-selection screening machine 12 is connected with the jaw crusher II 2 through a return conveying belt I18, a roller crusher 8 is arranged on the lower portion of the pre-selection screening machine 12, a bucket elevator II 6 is arranged on the right side of the roller crusher 8, a bin II 10 is arranged on the upper portion of the right side of the bucket elevator II 6, the lower part of the second storage bin 10 is provided with a first screening machine 15, the first screening machine 15 is connected with a second double-roll crusher 8 through a second return conveying belt 19, the lower part of the first screening machine 15 is provided with a third storage bin 11, the right side of the third storage bin 11 is provided with a third bucket elevator 7, the upper part of the right side of the third bucket elevator 7 is provided with two sets of magnetic separators, one 13 of the two sets of magnetic separators selects granules, the other 14 of the magnetic separators selects powder, and the rear end of the one 13 of the magnetic separators is provided with a second screening machine 16 and a third screening machine 17.
The jaw crusher and the double-roll crusher are both arranged at the position below the ground; the discharge granularity of the jaw crusher I1 is 50-100mm, the discharge granularity of the jaw crusher II 2 is 20-60mm, and the discharge granularity of the double-roll crusher 8 is 2-15 mm. The crushing and screening devices are arranged in a three-dimensional mode, the equipment arrangement is compact, the flow between equipment is shortened, the operation efficiency is improved, the equipment layout is compact, centralized dust removal treatment is facilitated, the environmental pollution is reduced, the energy consumption and the cost are reduced, and the operation and maintenance cost is reduced. The large-block electrofused chromium oxide material is classified and graded, and a closed-circuit crushing and screening operation is adopted section by section, a large amount of circulating load is added in the feeding of the crusher, so that the material is relatively thinned, the crusher can work at full load and high efficiency, and the production capacity is improved.
The screening machine is a resonance screen, the size of a screen hole of the preselection screening machine 12 is 4-15mm, the size of a screen hole of the second screening machine 16 is 1-2mm, and the size of a screen hole of the third screening machine 17 is 3-4 mm. The fine particle part is screened out from the feeding of all levels of crushers, the productivity of the crushers is increased, over-crushing is avoided, the crushers are classified into a plurality of levels according to the granularity and are respectively processed, and through the material screening device, the multi-level screening of materials can be realized according to the requirements of different particle sizes, so that the screening efficiency and the yield are improved.
The bucket elevator is in-flow feeding, bucket digging is not needed, the phenomena of extrusion and collision are seldom generated among materials, the materials are ensured to be scattered less during feeding and discharging, and mechanical abrasion is reduced; the bucket elevator is provided with a shell to prevent dust from flying in the bucket elevator, and has good sealing performance and less environmental pollution.
The magnetic separator is a dry magnetic separator.
The conveying belt 3 and the return conveying belt are both closed belt conveyors; and environment-friendly dust hoods are arranged at the jaw crusher and the double-roll crusher.
The working process of the three-section crushing and screening device for the electric melting chromium oxide is as follows: conveying large-sized electrofused chromium oxide materials into a jaw crusher 1 for coarse crushing operation, crushing the materials to 3-5 cm size by the jaw crusher 1, conveying the materials into a raw material bin 4 by a conveying belt 3, discharging the materials into a jaw crusher two 2 for fine crushing operation, lifting the finely crushed materials into a bin one 9 at the upper part from the bottom by a bucket elevator one 5, discharging the materials into a preselection sieving machine 12, returning the sieved materials to the jaw crusher two 2 for circulating fine crushing operation by a return conveying belt one 18, dropping the sieved materials into a counter roller crusher 8 for fine crushing operation, lifting the finely crushed materials into a bin two 10 at the upper part from the bottom by a bucket elevator two 6, dropping the materials in the bin two 10 onto a sieving machine one 15, returning the sieved materials to the counter roller crusher 8 for circulating fine crushing operation by a return conveying belt two 19, the undersize materials continuously fall into a third bottom bin 11, the undersize materials are lifted into two groups of magnetic separators on the upper portion through a third bucket elevator 7, the particles selected by the first magnetic separator 13 enter two subsequent groups of screening machines, the particles with two specifications of 2-1 mm and 1-0 mm are screened out by a second screening machine 16, the particles with two specifications of 4-3 mm and 3-2 mm are screened out by a third screening machine 17, and powder is selected out by a second magnetic separator 14. Thus, the finished products of the electro-fused chromium granular materials with four grain sizes are crushed and screened by three-stage crushing, lifting, screening and two-stage magnetic separation devices and respectively enter the next procedure.
Claims (6)
1. The utility model provides a three-section crushing and screening device of electric smelting chromic oxide which characterized in that: the device comprises a three-stage crushing, lifting, screening and two-stage magnetic separation device, wherein a first jaw crusher and a second jaw crusher are sequentially arranged at the bottom of the left side of the device, a raw material bin is arranged at the upper part of the second jaw crusher, the first jaw crusher and the raw material bin are connected through a conveying belt, a first bucket elevator is arranged on the right side close to the second jaw crusher, a first hopper is arranged at the upper part of the right side of the first bucket elevator, a preselection screening machine is arranged at the lower part of the first hopper, the preselection screening machine is connected with the first jaw crusher through a return conveying belt, a pair roller crusher is arranged at the lower part of the preselection screening machine, a second bucket elevator is arranged at the right side of the pair roller crusher, a second hopper is arranged at the upper part of the right side of the second hopper, a first screening machine is arranged at the lower part of the second hopper, the first screening machine is connected with the pair roller crusher through the return conveying belt, a third hopper is arranged at the lower part of the first screening machine, the right side of the third storage bin is provided with a third bucket elevator, the upper portion of the right side of the third bucket elevator is provided with two groups of magnetic separators, a first magnetic separator in the two groups of magnetic separators selects out granular materials, a second magnetic separator selects out powder materials, and the rear end of the first magnetic separator is provided with a second screening machine and a third screening machine.
2. The three-stage crushing and screening device for the electrofused chromium oxide according to claim 1, characterized in that: the screening machine is a resonance screen, the size of the screen hole of the preselection screening machine is 4-15mm, the size of the screen hole of the second screening machine is 1-2mm, and the size of the screen hole of the third screening machine is 3-4 mm.
3. The three-stage crushing and screening device for the electrofused chromium oxide according to claim 1, characterized in that: the bucket elevator is inflow type feeding.
4. The three-stage crushing and screening device for the electrofused chromium oxide according to claim 1, characterized in that: the jaw crusher and the double-roll crusher are both arranged below the ground; the discharge granularity of the jaw crusher I is 50-100mm, the discharge granularity of the jaw crusher II is 20-60mm, and the discharge granularity of the double-roll crusher is 2-15 mm.
5. The three-stage crushing and screening device for the electrofused chromium oxide according to claim 1, characterized in that: the magnetic separator is a dry magnetic separator.
6. The three-stage crushing and screening device for the electrofused chromium oxide according to claim 1, characterized in that: the conveying belt and the return conveying belt are both closed belt conveyors; and environment-friendly dust hoods are arranged at the jaw crusher and the double-roll crusher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220047736.4U CN217313784U (en) | 2022-01-10 | 2022-01-10 | Three-section crushing and screening device for electric melting chromium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220047736.4U CN217313784U (en) | 2022-01-10 | 2022-01-10 | Three-section crushing and screening device for electric melting chromium oxide |
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| Publication Number | Publication Date |
|---|---|
| CN217313784U true CN217313784U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220047736.4U Active CN217313784U (en) | 2022-01-10 | 2022-01-10 | Three-section crushing and screening device for electric melting chromium oxide |
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| CN (1) | CN217313784U (en) |
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- 2022-01-10 CN CN202220047736.4U patent/CN217313784U/en active Active
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