CN212596286U - Middle returned material processing system of copper smelting plant - Google Patents

Abstract

The utility model discloses a middle returned material processing system of a copper smelting plant, which comprises coarse crushing equipment and at least two fine crushing equipment; the tail end of the coarse crushing equipment is provided with the at least two fine crushing equipments, and the discharge end of the coarse crushing equipment is connected with the feed end of the first fine crushing equipment of the at least two fine crushing equipments; each of the at least two fine crushing devices is sequentially arranged end to end, and the discharge end of the fine crushing device positioned on the front side is connected with the feed end of the fine crushing device positioned on the rear side; the last of at least two smart crushing apparatus the discharge end of smart crushing apparatus is connected with the feed end of shale shaker, the discharge gate of shale shaker is connected with the feed inlet of grinding device. The utility model discloses but the middle returning charge that copper smelting plant hardness is big, ductility is good of continuous stable processing, can directly return the smelting system as the furnace charge after handling, have advantages such as environmental protection, investment are low, degree of automation height.

Description

Middle returned material processing system of copper smelting plant

Technical Field

The utility model relates to a technical field is handled to the copper sediment, especially relates to a material returning processing system in the middle of copper smelting plant.

Background

In recent years, the copper yield is rapidly increased, and in 2019, the copper yield in China is 978.4 ten thousand tons. At present, 80% of copper yield in the world is produced by a pyrogenic process, the pyrogenic process can generate a large amount of blowing slag and refining slag, the blowing slag and the refining slag have high copper content, and the return to a smelting system is the best treatment process, but the particle size of return materials can seriously influence the normal production of the smelting system.

Converter blowing process is mostly arranged in traditional copper smelting plants in China, and refining slag, ladle bottom copper, a chute shell and other intermediate material returning rock drills in the plants can be coarsely crushed and then added into a converter as cold materials to recover copper elements in the converter; however, with the improvement of the environmental protection requirement of China, the converter does not meet the new environmental protection requirement due to the low-altitude pollution problem and cannot pass the environmental evaluation, the advanced and environmental-friendly 'double-flash' process of flash smelting and flash converting and the processes of side blowing, top blowing and the like are adopted at present, the processes are difficult to directly return to a flash smelting system due to the fact that middle return materials have large particle sizes and are not easy to break, and finally only external packing treatment or external selling can be selected, so that the increase of the factory cost is difficult to avoid; although some double-flash smelting plants adopt blast furnaces to treat intermediate returned materials, the blast furnaces have serious environmental pollution and are gradually eliminated along with increasingly strict environmental requirements. In addition, at present, no mature and reliable treatment process exists at home and abroad; although the smelting technology theory is feasible, the smelting technology requires fine granularity, and the current prior art cannot meet the requirement; therefore, aiming at the characteristics of high hardness, high density, strong wear resistance, good ductility and the like of the intermediate return material, the processing system and the process of the intermediate return material in the copper smelting plant are developed, so that the intermediate return material can be directly returned to a smelting system, and the process is imperative.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a return material processing system in the middle of copper smelting plant to solve the big, serious problem of pollution effect of the system's of the middle return material equipment return particle size of current processing copper smelting plant.

An intermediate return material treatment system of a copper smelting plant comprises a coarse crushing device for crushing a large material and at least two fine crushing devices for further crushing; the fine crushing equipment is arranged at the tail end of the coarse crushing equipment, and the discharge end of the coarse crushing equipment is connected with the feed end of the first fine crushing equipment in the at least two fine crushing equipments; each of the at least two fine crushing devices is arranged in sequence, and the discharge end of the fine crushing device positioned on the front side is connected with the feed end of the fine crushing device positioned on the rear side; the last of at least two smart crushing apparatus the discharge end of smart crushing apparatus is connected with the feed end of shale shaker, the discharge gate of shale shaker is connected with the feed inlet of grinding device.

According to the utility model provides a material return processing system in middle of copper smelting plant is provided with two at least smart crushing apparatus at the end of coarse crushing equipment, after the material passes through coarse crushing equipment and is broken into a piece of material, carries out the smart crushing of at least twice through two at least smart crushing apparatus for the material obtains abundant breakage, guarantees that the material granularity size that obtains accords with the expectation; the discharge end at last smart crushing apparatus connects the shale shaker, and the material that will accomplish smart breakage is sieved through the shale shaker for the material that accords with the requirement granularity just can get into grinding equipment through the shale shaker and carry out grinding operation on next step, and the granularity size is not conform to the material of requirement and is stayed on the shale shaker, can send into it again and carry out the breakage again in two at least smart crushing apparatus, thereby the effectual off-the-shelf granularity requirement of having guaranteed.

Additionally, according to the utility model provides a return material processing system in middle of copper smelting plant can also have following additional technical characterstic:

further, the at least two fine crushing devices comprise a first jaw crusher for crushing the granularity of the material to a first preset value and a second jaw crusher for crushing the granularity of the material to a second preset value, the second preset value is smaller than the first preset value, the feed end of the first jaw crusher is connected with the discharge end of the coarse crushing device, the feed end of the second jaw crusher is connected with the discharge end of the first jaw crusher, and the discharge end of the second jaw crusher is connected with the feed end of the vibrating screen.

Further, the coarse crushing equipment adopts a rock drill which is used for crushing the granularity of the large materials to a third preset value, and the third preset value is larger than the first preset value.

Further, the grinding device adopts a rod mill, and the rod mill is used for grinding the granularity of the material to a fourth preset value, and the fourth preset value is smaller than the second preset value.

Further, a rotary screen is arranged at the tail end of the grinding equipment and used for screening the ground materials into qualified finished product materials and semi-finished product materials with overlarge particle sizes and needing to be ground again.

Furthermore, a storage bin used for storing materials is arranged between the rock drilling machine and the jaw crusher, a vibration feeder is arranged at the bottom of the storage bin, a discharge end of the vibration feeder is communicated with a feed end of the jaw crusher, and the materials in the storage bin are conveyed to the jaw crusher through the vibration feeder.

Further, the first jaw crusher and the second jaw crusher are connected through a first rubber belt conveyor, and the first rubber belt conveyor conveys the discharged material of the first jaw crusher into the second jaw crusher for secondary crushing;

the second section of jaw crusher is connected with the vibrating screen through a second belt conveyor, and the second belt conveyor conveys the discharged material of the second section of jaw crusher to the vibrating screen for screening;

the vibrating screen is connected with the rod grinding machine through a third belt conveyor, and the third belt conveyor conveys qualified materials screened by the vibrating screen to the rod grinding machine for grinding;

the rod grinding machine is connected with the drum screen through a fourth belt conveyor, and the fourth belt conveyor conveys materials ground by the rod grinding machine to the drum screen for screening;

and a fifth belt conveyor is arranged at the tail end of the drum screen and conveys the qualified finished product materials screened by the drum screen to a specified position.

The utility model also provides a return material processing technology in the middle of the copper smelting plant, the technology uses the middle return material processing system of foretell copper smelting plant, the technology includes following step:

crushing intermediate return materials such as large-block blowing slag, refining slag, bottom-covering copper, a chute shell and the like from a copper smelting plant to a third preset value through coarse crushing equipment;

crushing the material with the granularity of a third preset value for multiple times by at least two fine crushing devices, and crushing the granularity to a second preset value; the third preset value is greater than the second preset value;

screening the crushed materials through a vibrating screen, feeding the materials on the screen into at least two fine crushing devices again for crushing for multiple times, then screening through the vibrating screen again, feeding the materials under the screen into a grinding device for grinding, and grinding the granularity of the materials to a fourth preset value; the fourth preset value is smaller than the second preset value;

screening the ground materials through a drum screen, feeding the materials on the screen into the grinding equipment again for grinding, then screening through the drum screen again, and simultaneously transporting the materials under the screen to a finished product stacking position.

Further, the specific steps of crushing the material with the granularity of a third preset value for multiple times by at least two fine crushing devices are as follows:

crushing the material with the granularity of a third preset value by a one-section jaw crusher to the first preset value; the third preset value is greater than the first preset value;

feeding the crushed materials into a two-section jaw crusher for crushing, and crushing the particle size to a second preset value; the first preset value is greater than the second preset value.

Further, the range of the first preset value is 50mm-100mm, the range of the second preset value is 20mm-30mm, the range of the third preset value is 200mm-400mm, and the range of the fourth preset value is 2mm-5 mm.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an intermediate returned material processing system of a copper smelting plant according to an embodiment of the present invention;

fig. 2 is a flow chart of the middle returned material treatment process of the copper smelting plant according to another embodiment of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present invention provides an intermediate returned material processing system for a copper smelting plant, including a coarse crushing device for crushing a bulk material, and at least two fine crushing devices for further crushing; the fine crushing equipment is arranged at the tail end of the coarse crushing equipment, and the discharge end of the coarse crushing equipment is connected with the feed end of the first fine crushing equipment in the at least two fine crushing equipments; each of the at least two fine crushing devices is arranged in sequence, and the discharge end of the fine crushing device positioned on the front side is connected with the feed end of the fine crushing device positioned on the rear side; and crushing the massive middle returned material by using coarse crushing equipment so as to facilitate the subsequent crushing operation of fine crushing equipment.

Specifically, coarse crushing equipment adopts rock drill 10, rock drill 10 is used for smashing the granularity of bold material to third default, through rock drill 10 with the bold middle broken back of returning charge, send into the smart crushing equipment with broken material and carry out breakage once more for the less material of breaking through the rock drill is more easily broken by smart crushing equipment, improves the crushing effect of material.

Specifically, the at least two fine crushing devices comprise a first jaw crusher 21 and a second jaw crusher 22, the feed end of the first jaw crusher 21 is connected with the discharge end of the rock drill 10, the feed end of the second jaw crusher 22 is connected with the discharge end of the first jaw crusher 21, and the discharge end of the second jaw crusher 22 is connected with the feed end of the vibrating screen 30. After the rock drill 10 crushes the granularity of the material to a third preset value, the crushed material is sent to the first jaw crusher 21, the granularity of the material is crushed to a first preset value, and the crushed material is sent to the second jaw crusher 22 to be crushed through the first jaw crusher 21, so that the material with the granularity of a second preset value is obtained.

Optionally, a storage bin 11 for storing materials is arranged between the rock drilling machine 10 and the jaw crusher 21, a vibration feeder 12 is arranged at the bottom of the storage bin 11, a discharge end of the vibration feeder 12 is communicated with a feed end of the jaw crusher 21, and the materials in the storage bin 11 are conveyed to the jaw crusher 21 through the vibration feeder 12. Middle returning charge carries out the breakage through rock drill 10, and the material after the breakage is sent into feed bin 11 through the forklift to feed bin 11 is controlled through the vibratory feeder 12 that the bottom set up, and the material in the feed bin 11 is controlled sends into one section jaw crusher 21 in and carries out the breakage.

With continued reference to fig. 1, the discharge end of the two-stage jaw crusher 22 is connected to the feed end of a vibrating screen 30, and the discharge end of the vibrating screen 30 is connected to the feed inlet of the grinding apparatus. After the materials are finely crushed by the first jaw crusher 21 and the second jaw crusher 22, the crushed materials are sent into the vibrating screen 30 to be screened, the oversize materials with the granularity not meeting the conditions are sent into the first jaw crusher 21 again to be crushed for a plurality of times, and the undersize materials with the granularity meeting the conditions are sent into the grinding equipment to be further crushed.

Specifically, the grinding device adopts a rod mill 40, and the rod mill 40 is used for grinding the particle size of the material to a fourth preset value; the materials screened by the vibrating screen 30 are sent to a rod grinding machine 40 for further grinding and crushing, meanwhile, a drum screen 50 is arranged at the tail end of the rod grinding machine 40, and the drum screen 50 is used for screening the ground materials into qualified finished product materials and semi-finished product materials with overlarge granularity and needing to be ground again.

Specifically, the first jaw crusher 21 and the second jaw crusher 22 are connected through a first rubber belt conveyor 61, a material is crushed through the first jaw crusher 21 and falls onto the first rubber belt conveyor 61 from the discharge end of the first jaw crusher 21, and the discharged material of the first jaw crusher 21 is conveyed into the second jaw crusher 21 through the first rubber belt conveyor 61 to be crushed again.

The two-section jaw crusher 22 is connected with the vibrating screen 30 through a second belt conveyor 62, the material is crushed again through the two-section jaw crusher 22 and falls onto the second belt conveyor 62 from the discharge end of the two-section jaw crusher 22, and the discharged material of the two-section jaw crusher 22 is conveyed to the vibrating screen 30 through the second belt conveyor 62 for screening.

The vibrating screen 30 is connected with the rod grinding machine 40 through a third rubber belt conveyor 63, materials are screened through the vibrating screen 30, qualified materials passing through the vibrating screen 30 fall onto the third rubber belt conveyor 63, and the qualified materials screened through the vibrating screen 30 are conveyed to the rod grinding machine 40 through the third rubber belt conveyor 63 to be ground.

The rod grinding machine 40 is connected with the drum screen 50 through a fourth belt conveyor 64, the materials are ground and crushed again through the rod grinding machine 40, the materials crushed through the rod grinding machine 40 fall onto the fourth belt conveyor 64, and the materials ground and crushed through the rod grinding machine 40 are conveyed to the drum screen 50 through the fourth belt conveyor 64 to be screened.

The tail end of the drum screen 50 is provided with a fifth belt conveyor 65, materials are screened through the drum screen 50, the materials with qualified granularity fall onto the fifth belt conveyor 65 through the drum screen 50, and the qualified finished materials screened through the drum screen 50 are conveyed to a specified position through the fifth belt conveyor 65.

When the fine crushing device works, the tail end of the rock drilling machine 10 is provided with the first jaw crusher 21 and the second jaw crusher 22 at one time, after materials are crushed into one piece of materials through the rock drilling machine 0, the materials are finely crushed twice through the first jaw crusher 21 and the second jaw crusher 22 again, so that the materials are sufficiently crushed, and the granularity of the obtained materials is ensured to be in accordance with the expectation; the discharge end at two-stage jaw crusher 22 is connected shale shaker 30, and the material that will accomplish the smart breakage is sieved through shale shaker 30 for the material that meets the requirements granularity just can get into rod mill 40 through shale shaker 30 and carry out the grinding crushing operation on next step, and the material that the granularity size is not conform to the requirements is stayed on shale shaker 30, can send it into one section jaw crusher 21 again and carry out the breakage, thereby the effectual off-the-shelf granularity requirement of having guaranteed.

Referring to fig. 2, another embodiment of the present invention further provides a process for processing intermediate returned materials in a copper smelting plant, wherein the process uses the above-mentioned system for processing intermediate returned materials in the copper smelting plant, and the process includes the following steps:

crushing intermediate return materials such as large-block blowing slag, refining slag, bottom-covering copper, a chute shell and the like from a copper smelting plant to a third preset value through coarse crushing equipment;

crushing the material with the granularity of a third preset value for multiple times by at least two fine crushing devices, and crushing the granularity to a second preset value;

screening the crushed materials through a vibrating screen 30, feeding the materials on the screen into at least two fine crushing devices again for crushing for multiple times, then screening the materials through the vibrating screen 30 again, feeding the materials under the screen into a grinding device for grinding, and grinding the granularity of the materials to a fourth preset value;

the ground materials are screened through the rotary screen 50, the materials on the screen are sent into the grinding equipment again to be ground and then screened through the rotary screen 50 again, and meanwhile the materials under the screen are transported to a finished product stacking position.

Specifically, the specific steps of crushing the material with the granularity of a third preset value for multiple times by at least two fine crushing devices are as follows:

crushing the material with the granularity of a third preset value by a first jaw crusher 21, and crushing the granularity to the first preset value;

the crushed material is sent to a two-stage jaw crusher for crushing 22, and the particle size is crushed to a second preset value.

The range of the first preset value is 50mm-100mm, the range of the second preset value is 20mm-30mm, the range of the third preset value is 200mm-400mm, and the range of the fourth preset value is 2mm-5 mm.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (7)

1. An intermediate returned material treatment system of a copper smelting plant is characterized by comprising a coarse crushing device for crushing a large material and at least two fine crushing devices for further crushing;

the fine crushing equipment is arranged at the tail end of the coarse crushing equipment, and the discharge end of the coarse crushing equipment is connected with the feed end of the first fine crushing equipment in the at least two fine crushing equipments; each of the at least two fine crushing devices is arranged in sequence, and the discharge end of the fine crushing device positioned on the front side is connected with the feed end of the fine crushing device positioned on the rear side;

the last of at least two smart crushing apparatus the discharge end of smart crushing apparatus is connected with the feed end of shale shaker, the discharge gate of shale shaker is connected with the feed inlet of grinding device.

2. The intermediate returned material processing system of the copper smelting plant according to claim 1, wherein the at least two fine crushing devices include a first jaw crusher for crushing the particle size of the material to a first preset value, and a second jaw crusher for crushing the particle size of the material to a second preset value, the second preset value is smaller than the first preset value, the feed end of the first jaw crusher is connected with the discharge end of the coarse crushing device, the feed end of the second jaw crusher is connected with the discharge end of the first jaw crusher, and the discharge end of the second jaw crusher is connected with the feed end of the vibrating screen.

3. The intermediate return material handling system of claim 2, wherein the coarse crushing apparatus employs a rock drill for crushing the particle size of the bulk material to a third preset value, the third preset value being greater than the first preset value.

4. The copper smelter intermediate return material processing system according to claim 3, wherein the grinding device employs a rod mill for crushing the particle size of the material to a fourth preset value, the fourth preset value being smaller than the second preset value.

5. The intermediate return material treatment system of claim 4, wherein a trommel is provided at the end of the grinding device, the trommel being adapted to screen the ground material into qualified finished material and semi-finished material having an excessively large particle size and requiring regrinding.

6. The intermediate return material processing system of claim 5, wherein a storage bin for storing the material is arranged between the rock drill and the jaw crusher, a vibration feeder is arranged at the bottom of the storage bin, the discharge end of the vibration feeder is communicated with the feed end of the jaw crusher, and the material in the storage bin is conveyed to the jaw crusher through the vibration feeder.

7. The intermediate returned material processing system of the copper smelting plant according to claim 6, wherein the first jaw crusher is connected with the second jaw crusher by a first belt conveyor, and the first belt conveyor conveys the discharged material of the first jaw crusher into the second jaw crusher for re-crushing;

the second section of jaw crusher is connected with the vibrating screen through a second belt conveyor, and the second belt conveyor conveys the discharged material of the second section of jaw crusher to the vibrating screen for screening;

the vibrating screen is connected with the rod grinding machine through a third belt conveyor, and the third belt conveyor conveys qualified materials screened by the vibrating screen to the rod grinding machine for grinding;

the rod grinding machine is connected with the drum screen through a fourth belt conveyor, and the fourth belt conveyor conveys materials ground by the rod grinding machine to the drum screen for screening;

and a fifth belt conveyor is arranged at the tail end of the drum screen and conveys the qualified finished product materials screened by the drum screen to a specified position.

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