CN112604800A - Processing technology of scrap steel shredder - Google Patents
Processing technology of scrap steel shredder Download PDFInfo
- Publication number
- CN112604800A CN112604800A CN202011365851.8A CN202011365851A CN112604800A CN 112604800 A CN112604800 A CN 112604800A CN 202011365851 A CN202011365851 A CN 202011365851A CN 112604800 A CN112604800 A CN 112604800A
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- CN
- China
- Prior art keywords
- steel
- crusher
- scrap steel
- scraps
- scrap
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
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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
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a processing technology of a scrap steel shredder, which comprises the following steps: uniformly feeding large scrap steel into a jaw crusher for coarse crushing through a bin by a vibration feeder, and feeding the coarsely crushed scrap steel into a hammer crusher or a cone crusher for further crushing by a belt conveyor; carrying out two-stage sorting on the coarsely crushed steel scraps by using a vibration sorting machine, and dividing the steel scraps into large steel scraps and small steel scraps; according to the processing technology of the scrap steel shredder, the scrap steel is graded and crushed, graded and screened, and acid liquor soaking and air drying treatment are carried out on small scrap steel, so that the processing efficiency of the scrap steel can be greatly improved, the secondary utilization efficiency of the scrap steel is greatly improved, meanwhile, the processing technology can detect the shredding degree, judge the shredding condition in the processing process, further properly adjust and improve the processing, and realize the maximum capacity.
Description
Technical Field
The invention belongs to the technical field of scrap steel shredding processing, and particularly relates to a processing technology of a scrap steel shredder.
Background
The crusher mainly crushes various stones, generally, different crusher types can be selected according to different stone properties, common crusher types comprise jaw crushing, cone crushing and impact crushing, the sizes of stones which can be crushed by the crushers of different types are different, and the production yield is different;
scrap steel refers to steel waste materials (such as trimming, end cutting and the like) which cannot become products in the production process of steel plants and steel materials in used and scrapped equipment and components, and the steel waste materials are called steel scrap; the component is pig iron called scrap iron, which is commonly called scrap steel.
The total amount of scrap steel generated in the world every year at present is 3-4 hundred million tons, which accounts for about 45-50% of the total steel production, wherein 85-90% of the scrap steel is used as a steelmaking raw material, and 10-15% of the scrap steel is used for casting, ironmaking and steel regeneration;
in order to improve the processing efficiency and the refining degree of the scrap steel, a processing technology of a scrap steel shredder is provided.
Disclosure of Invention
The invention mainly aims to provide a processing technology of a scrap steel shredder, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a processing technology of a scrap steel shredder comprises the following steps:
uniformly feeding large scrap steel into a jaw crusher for coarse crushing through a vibration feeder, and feeding the coarsely crushed scrap steel into a hammer crusher or a cone crusher for further crushing through a belt conveyor;
step two, carrying out two-stage sorting on the coarsely crushed steel scraps by using a vibration sorting machine, dividing the steel scraps into large steel scraps and small steel scraps, returning the large steel scraps to a crusher, soaking the small steel scraps in acid liquor, air-drying the small steel scraps, feeding the small steel scraps into a crusher, and collecting dust-grade ores by using an air machine connected with the crusher;
screening the crushed materials into large-particle coarse powder and fine powder by using a screening machine connected with the crusher, returning the large-particle coarse powder and the waste steel to the crusher for re-crushing, collecting the fine waste steel powder, and carrying out acid washing and air drying on the collected fine powder for later use;
step four, putting coarse powder steel scraps into a crushing cavity defined by the air bag, then bundling and reinforcing the air bag by using a coil, introducing alternating current into the coil, electrifying for 5-8min every half an hour, closing the feeding pipe after the processing is finished, and closing the feeding pipe after the front rotating shaft and the rear rotating shaft continue to operate for 3-5 min;
and fifthly, acquiring the working current value and the working voltage value of the brushless motor in the steel shredder in real time, respectively calculating corresponding first working power and second working power according to the working current value and the working voltage value acquired twice, and judging the shredding degree of the scrap steel in the scrap steel shredder according to the size relation between the first working power and the second working power and a preset power threshold value.
Preferably, the acid liquor soaking time is 2-3 h.
Preferably, the drying time is 2-5 days.
Preferably, the simple pendulum of the jaw crusher is 3000 x 2100 mm, the feed lump size is 1800 mm, and the production capacity is 1100 tons/ton/hr.
Preferably, the jaw crusher has a compound pendulum of 2100 × 1670 mm and a discharge opening of 355 mm, and the capacity is 3000 tons/stand/hour.
Compared with the prior art, the invention has the following beneficial effects: this processing technology of scrap steel shredder, this processing technology carries out the graded crushing to the scrap steel with the team, and the classified screening to and soak, air-dry the processing to the acidizing fluid of little scrap steel, can improve the treatment effeciency of scrap steel greatly for the reutilization efficiency of scrap steel promotes greatly, and this processing technology can detect the degree of tearing simultaneously, judges the condition of tearing in the course of working, and then can suitably adjust the processing and improve, realizes the maximum productivity ization.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
When the scrap shredder is processed, firstly, large scrap is uniformly fed into a jaw crusher through a storage bin by a vibrating feeder to be coarsely crushed, the coarsely crushed scrap is conveyed to a hammer crusher or a cone crusher by a belt conveyor to be further crushed, and when the cone crusher works, the rotation of a motor rotates around a fixed point of a circle under the forced action of an eccentric sleeve through a belt pulley or a shaft coupling, a transmission shaft of the cone crusher and a cone part of the cone crusher to do rotary swing motion. Therefore, the crushing wall of the crushing cone is close to and is away from the surface of the rolling mortar wall fixedly arranged on the adjusting sleeve, so that the ore is continuously impacted in the crushing cavity, and the crushing and bending effects are realized. The motor drives the eccentric sleeve to rotate through the bevel gear, so that the crushing cone performs rotary swing motion; carrying out two-stage sorting on the coarsely crushed steel scraps by using a vibration sorting machine, dividing the steel scraps into large steel scraps and small steel scraps, returning the large steel scraps to a crusher, soaking the small steel scraps in acid liquor, air-drying, feeding the small steel scraps into a crusher, and collecting dust-grade ores by using an air machine connected with the crusher;
screening the crushed materials into large-particle coarse powder and fine powder by using a screening machine connected with a crusher, returning the large-particle coarse powder and the fine powder to the crusher for re-crushing, collecting the fine steel powder, carrying out acid pickling and air drying on the collected fine powder for later use, and removing oxide skin and rusty materials on the surface of the steel by using an acid solution, namely acid pickling. The method is a method for cleaning the surface of metal, generally carried out together with pre-film, and generally comprises the steps of immersing a workpiece into an aqueous solution of sulfuric acid and the like to remove a film of oxide and the like on the surface of the metal, and carrying out pretreatment or intermediate treatment of processes such as electroplating, enamel, rolling and the like;
putting coarse powder steel scraps into a crushing cavity defined by the air bag, then binding and reinforcing the air bag by using a coil, introducing alternating current into the coil, electrifying for 5-8min every half an hour, closing the feeding pipe after the processing is finished, and closing the front rotating shaft and the rear rotating shaft after the front rotating shaft and the rear rotating shaft continue to operate for 3-5 min;
the working current value and the working voltage value of a brushless motor in the steel shredder are collected in real time, the working current value and the working voltage value which are collected twice are respectively calculated to obtain corresponding first working power and second working power, and the shredding degree of the scrap steel in the scrap steel shredder is judged according to the size relation between the first working power and the second working power and a preset power threshold value.
Wherein the acid liquor soaking time is 2-3h, the airing time is 2-5 days, the simple pendulum of the jaw crusher is 3000 multiplied by 2100 mm, the feeding lump size is 1800 mm, the production capacity is 1100 ton/per bench per hour, the compound pendulum of the jaw crusher is 2100 multiplied by 1670 mm, and the production capacity is 3000 ton/per bench per hour when the ore discharge port is 355 mm.
Example 1
Uniformly feeding large scrap steel into a jaw crusher for coarse crushing through a bin by a vibration feeder, and feeding the coarsely crushed scrap steel into a hammer crusher or a cone crusher for further crushing by a belt conveyor; carrying out two-stage sorting on the coarsely crushed steel scraps by using a vibration sorting machine, dividing the steel scraps into large steel scraps and small steel scraps, returning the large steel scraps to a crusher, soaking the small steel scraps in acid liquor, air-drying, feeding the small steel scraps into a crusher, and collecting dust-grade ores by using an air machine connected with the crusher; screening the crushed materials into large-particle coarse powder and fine powder by using a screening machine connected with the crusher, returning the large-particle coarse powder and the waste steel to the crusher for re-crushing, collecting the fine waste steel powder, and carrying out acid washing and air drying on the collected fine powder for later use; putting coarse powder steel scraps into a crushing cavity defined by the air bag, then binding and reinforcing the air bag by using a coil, introducing alternating current into the coil, electrifying for 5-8min every half an hour, closing the feeding pipe after the processing is finished, and closing the front rotating shaft and the rear rotating shaft after the front rotating shaft and the rear rotating shaft continue to operate for 3-5 min; acquiring a working current value and a working voltage value of a brushless motor in a steel shredder in real time, respectively calculating corresponding first working power and second working power according to the working current value and the working voltage value acquired twice, and judging the shredding degree of the scrap steel in the scrap steel shredder according to the relation between the first working power and the power threshold and the preset power threshold;
the detection shows that the processed scrap steel is powdery, the particle size of the powdery scrap steel is 140 meshes, and compared with the conventional scrap steel shredder, the shredding rate is improved by 30%.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The processing technology of the scrap steel shredder is characterized by comprising the following steps:
uniformly feeding large scrap steel into a jaw crusher for coarse crushing through a vibration feeder, and feeding the coarsely crushed scrap steel into a hammer crusher or a cone crusher for further crushing through a belt conveyor;
step two, carrying out two-stage sorting on the coarsely crushed steel scraps by using a vibration sorting machine, dividing the steel scraps into large steel scraps and small steel scraps, returning the large steel scraps to a crusher, soaking the small steel scraps in acid liquor, air-drying the small steel scraps, feeding the small steel scraps into a crusher, and collecting dust-grade ores by using an air machine connected with the crusher;
screening the crushed materials into large-particle coarse powder and fine powder by using a screening machine connected with the crusher, returning the large-particle coarse powder and the waste steel to the crusher for re-crushing, collecting the fine waste steel powder, and carrying out acid washing and air drying on the collected fine powder for later use;
step four, putting coarse powder steel scraps into a crushing cavity defined by the air bag, then bundling and reinforcing the air bag by using a coil, introducing alternating current into the coil, electrifying for 5-8min every half an hour, closing the feeding pipe after the processing is finished, and closing the feeding pipe after the front rotating shaft and the rear rotating shaft continue to operate for 3-5 min;
and fifthly, acquiring the working current value and the working voltage value of the brushless motor in the steel shredder in real time, respectively calculating corresponding first working power and second working power according to the working current value and the working voltage value acquired twice, and judging the shredding degree of the scrap steel in the scrap steel shredder according to the size relation between the first working power and the second working power and a preset power threshold value.
2. The process of claim 1, wherein the process comprises the following steps: the soaking time with acid liquor is 2-3 h.
3. The process of claim 1, wherein the process comprises the following steps: the drying time is 2-5 days.
4. The process of claim 1, wherein the process comprises the following steps: the simple pendulum of the jaw crusher is 3000 multiplied by 2100 mm, the feed lump size is 1800 mm, and the production capacity is 1100 tons/per table/hour.
5. The process of claim 1, wherein the process comprises the following steps: the compound pendulum of the jaw crusher is 2100X 1670 mm, and when the ore discharge opening is 355 mm, the production capacity is 3000 tons/per table per hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011365851.8A CN112604800A (en) | 2020-11-29 | 2020-11-29 | Processing technology of scrap steel shredder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011365851.8A CN112604800A (en) | 2020-11-29 | 2020-11-29 | Processing technology of scrap steel shredder |
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| Publication Number | Publication Date |
|---|---|
| CN112604800A true CN112604800A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011365851.8A Pending CN112604800A (en) | 2020-11-29 | 2020-11-29 | Processing technology of scrap steel shredder |
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Citations (9)
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|---|---|---|---|---|
| WO1993005883A1 (en) * | 1991-09-18 | 1993-04-01 | Phoenix Fibreglass Inc. | Process for separating fibres from composite materials |
| EP0703004A1 (en) * | 1994-09-20 | 1996-03-27 | Hitachi, Ltd. | Waste processing method and apparatus therefor |
| DE19715889A1 (en) * | 1997-04-16 | 1998-10-22 | Willibald Gmbh Maschinenfabrik | Shredder for organic matter fitted discharges to sieve with return-conveyor |
| CN101396634A (en) * | 2007-09-24 | 2009-04-01 | 宝山钢铁股份有限公司 | Use of magnesium used refractory, preparation and use method of composite scale inhibitor |
| CN104570796A (en) * | 2014-11-21 | 2015-04-29 | 揭阳市义发实业有限公司 | Shredmaster control system and method |
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2020
- 2020-11-29 CN CN202011365851.8A patent/CN112604800A/en active Pending
Patent Citations (9)
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| WO1993005883A1 (en) * | 1991-09-18 | 1993-04-01 | Phoenix Fibreglass Inc. | Process for separating fibres from composite materials |
| EP0703004A1 (en) * | 1994-09-20 | 1996-03-27 | Hitachi, Ltd. | Waste processing method and apparatus therefor |
| DE19715889A1 (en) * | 1997-04-16 | 1998-10-22 | Willibald Gmbh Maschinenfabrik | Shredder for organic matter fitted discharges to sieve with return-conveyor |
| CN101396634A (en) * | 2007-09-24 | 2009-04-01 | 宝山钢铁股份有限公司 | Use of magnesium used refractory, preparation and use method of composite scale inhibitor |
| CN104570796A (en) * | 2014-11-21 | 2015-04-29 | 揭阳市义发实业有限公司 | Shredmaster control system and method |
| CN104549690A (en) * | 2014-12-10 | 2015-04-29 | 苏州路路顺机电设备有限公司 | Ore grinding process |
| CN107442549A (en) * | 2017-06-23 | 2017-12-08 | 中国矿业大学 | The dry separation recovery process of valuable component in a kind of waste printed circuit board |
| CN108579915A (en) * | 2017-12-21 | 2018-09-28 | 重庆吉邦装饰工程有限公司 | A kind of construction material disintegrating process |
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Application publication date: 20210406 |