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CN-118111217-B - System and method for reducing powder rate and quick drying of cold-pressed ball material

CN118111217BCN 118111217 BCN118111217 BCN 118111217BCN-118111217-B

Abstract

A system and a method for reducing powder rate and quick drying of cold-pressed spherical materials belong to the technical field of material agglomeration, and comprise an indoor operation area, an outdoor operation area, a material box bracket, a circulating material box, a cylindrical condensing lens with adjustable elevation angle, a specially-modified transportation vehicle and a single-beam crane system outside a ground bin. The porous circulation feed box is adopted, the evaporation surface area is increased, the drying efficiency is increased, the air passage condition for accelerating the air flow speed is created, so that the moisture on the surface of the pellet is quickly evaporated, the pellet temperature is increased in a cylindrical concave mirror condensation mode, the evaporation is accelerated, the temperature difference and the density difference of air inside and outside a wall are caused, the air flow is accelerated, and the air passage is matched with the high temperature, so that the evaporation speed of the pellet moisture is obviously enhanced. By means of special concepts and designs, special equipment and mature equipment tools are reasonably matched, so that great innovation of a cold-pressed ball drying mode and a logistics mode is realized, and quick drying, powder reduction, low-cost and high-quality production of ball materials are realized.

Inventors

  • LI WENMING
  • Lai jiaxing
  • YAN WEI

Assignees

  • 上海逢石科技有限公司

Dates

Publication Date
20260505
Application Date
20240319

Claims (9)

  1. 1. The system for reducing the powder rate and quick-drying of the cold-pressed spherical materials is characterized by comprising an indoor operation area, an outdoor operation area, a feed box bracket (3-5), a circulating feed box, a cylindrical condensing lens with adjustable elevation angle, a specially-modified transportation vehicle and a single-beam crane system outside a ground bin: The indoor operation area is a steel structure factory building and comprises a dry-method ball pressing production line and a wet-method ball pressing production line, wherein the dry-method ball pressing production line comprises a dry ball pressing equipment area (1-1), a No. I raw material tank (1-2), a No. I circulating feed box placing area (1-3), a No. I raw material crown block (1-4), a No. I output track (1-5) and a No. I track electric flat car (1-6), and the wet-method ball pressing production line comprises a wet ball pressing equipment area (2-1), a No. II raw material tank (2-2), a No. II circulating feed box placing area (2-3), a No. II raw material crown block (2-4), a No. II output track (2-5) and a No. II track electric flat car (2-6); The outdoor operation area is adjacent to and orthogonally arranged with the indoor operation area, the outdoor operation area comprises a track supporting beam column (3-1), a finished product crown block (3-2), a triangular reinforced concrete column reinforced concrete enclosing wall (3-3), splayed wind collecting wing walls (3-4) and a feed box bracket (3-5), the finished product crown block (3-2) is used for lifting and circulating feed boxes (5) to be placed on the feed box bracket (3-5) or directly lifting and circulating feed boxes (5) for loading, the splayed wind collecting wing walls (3-4) are 4 sides, the left side and the right side are respectively connected with the front end and the rear end of the triangular reinforced concrete column reinforced concrete enclosing wall (3-3), the right side wind collecting wing wall (3-4) forms an included angle of 30 degrees with the front end and the rear end of the plant wall adjacent to the track supporting beam column (3-1), and the left side wind collecting wing wall (3-4) forms an included angle of 30 degrees with the plant left wall; The material box bracket (3-5) is a bracket for drying or temporarily storing a real box or an empty box of the circulating material box (5) and is a sliding type quick loading device of the circulating material box (5) during loading; The circulating bin (5) consists of a bottom slideway (5-1), a column (5-2), an upper longitudinal beam (5-3), a bottom cross beam (5-4), an upper cross beam (5-5), a guide groove (5-6), a reinforced angle plate (5-7), a front inserting gate plate (5-8), a hanging hole plate (5-9), a bin coaming (5-10) and an inserting plate hanging rope (5-11), wherein the bottom of the column (5-2) is welded on the bottom slideway (5-1), the upper longitudinal beam (5-3) is welded on the top of the column (5-2), the bottom cross beam (5-4) is welded on the bottom slideway (5-1) and is used for connecting and fixing the two bottom slideways (5-1), the guide groove (5-6) is welded on the inner side of the foremost column (5-2), the hanging hole plate (5-9) is welded on the upper longitudinal beam (5-3), the bin coaming (5-10) is welded on the inner side of the column (5-2), the bin (5-10) is counted to be 5, and the left side and the right side of the bin coaming (5-10) are respectively arranged on the circulating bin (5) and the left side and the right side of the circulating bin (5-2); The cylindrical condensing lens with the adjustable elevation angle gathers sunlight onto a feed box on the basis of ventilation drying, the drying of ball materials is further accelerated through high temperature, and meanwhile, the cylindrical condensing lens with the adjustable elevation angle plays a role (8) of an air duct in cooperation with the reinforced concrete enclosing wall (3-3) of the angle steel reinforced concrete column and the factory building wall adjacent to the rail supporting beam column (3-1); the roller grooves with the same structure and width as the bin bracket (3-5) are welded at the position, close to the side bin plate, of the bin of the specially modified transport vehicle, so that the circulating bin (5) sliding from the bin bracket (3-5) is smoothly connected, the circulating bin (5) filled with the ball material is transported to the outside of the ground bin, the drawing and inserting flashboard (5-8) at the tail part of the circulating bin (5) is pulled out through a single-beam crane system outside the ground bin, and the drawing and inserting flashboard (5-8) is put back after the material is poured.
  2. 2. The system for reducing powder rate and quick drying of cold-pressed ball materials according to claim 1, wherein the material box bracket (3-5) is composed of a longitudinal base (6-1), a solid steel column (6-2), a cross beam (6-3), a roller groove (6-4), a transverse base (6-5), a reinforcing piece (6-6), rollers (6-7), rolling bearings (6-8), pin seats (6-9) and pins (6-10), the lower end of the solid steel column (6-2) is welded on the longitudinal base (6-1), the upper end of the solid steel column (6-2) is welded with a thick roller groove (6-4), the cross beam (6-3) is welded on the inner side of the upper end of the solid steel column (6-2), 1 cross beam (6-3) is arranged every other 4 solid steel columns (6-2) to ensure structural rigidity, every other 2 solid steel columns (6-2) are provided with one transverse base (6-5) to further ensure structural rigidity, the reinforcing piece (6-6) is welded on the inner side of the roller groove (6-4), and the roller groove (6-4) is arranged between the rollers (6-4) to play a role of reinforcing gaps, the roller is fastened with a roller shaft through a key, the roller shaft is arranged on a roller groove (6-4) through a rolling bearing (6-8), a bolt seat (6-9) is arranged on the outer side of the upper end of a solid steel column (6-2), a bolt (6-10) is inserted into the bolt seat (6-9) to prevent the circulation box (5) from moving forwards, and after the bolt (6-10) is pulled out, the circulation box (5) moves forwards and slidingly enters a transport vehicle.
  3. 3. The cold-pressed ball material powder rate reducing and quick-drying system according to claim 1, wherein the elevation angle adjustable cylindrical condensing lens consists of a box-type upright post (7-1), a box-type power table (7-2), a motor (7-3), a speed reducer (7-4), a main shaft (7-5), a cylindrical net rack (7-6), a rectangular thin steel plate reflecting surface (7-7), an upright post mounting foundation pit (7-8) and a ground-laying steel plate (7-9), wherein the box-type upright post (7-1) and the box-type power table (7-2) are directly cast in the upright post mounting foundation pit (7-8), pass through the ground-laying steel plate (7-9) after extending out of the ground and are firmly welded to the box-type upright post (7-1) and the ground-laying steel plate (7-9) through triangular rib plates, the motor (7-3) and the speed reducer (7-4) are mounted on the box-type power table (7-2) through bolt connection, an output shaft of the speed reducer (7-4) is connected with the main shaft (7-5) through the coupling, isosceles trapezoid-shaped power pieces are welded at two ends of the main shaft (7-5) respectively, the isosceles trapezoid piece is welded with a cylindrical net rack (7-6), and the cylindrical net rack (7-6) is connected with a rectangular thin steel plate reflecting surface (7-7) attached with aluminum foil by bolts.
  4. 4. A cold-pressed pellet reducing powder rate and quick-drying system according to claim 2, characterized in that said specially adapted transport vehicle is adapted from a deep-car vehicle for general hauling of granular material, inside which the rear part of the car plate is reinforced with a steel plate of 20mm or more, while at the same time a through hole is made in the rear part of the car plate (8-2) for insertion of a crosspiece (8-3), and at the rear part of the car bottom (8-1) for insertion of a vertical crosspiece (8-4).
  5. 5. The system for reducing the powder rate and quick drying of cold-pressed balls according to claim 1, wherein the single-beam crane system outside the ground bin is a portal frame formed by vertical I-steel and transverse frame rail steel, a cross beam (9-1-2) made of the rail steel is welded or bolted on an I-steel upright post (9-1-1), the cross beam is reinforced by a triangular rib plate (9-1-3), and the single-beam crane (9-2) is installed on the cross beam.
  6. 6. The system for reducing the powder rate and quick drying of the cold-pressed ball materials according to claim 1 is characterized in that the front inserting flashboard (5-8) is formed by welding a porous steel plate (5-8-1) and small angle steel (5-8-2), a protruding part of the front inserting flashboard is provided with a round hole to form a hanging raised head (5-8-3), and the inserting plate hanging rope (5-11) is composed of a steel wire rope and a rope buckle.
  7. 7. A cold-pressed pellet reducing powder rate and quick-drying system according to claim 1, characterized in that the bin bracket (3-5) has a gradient of 10%.
  8. 8. A method of reducing powder rate and quick-drying of cold-pressed pellets, achieved with a system according to any of claims 1-7, comprising the steps of: (1) Working mode 1 ① The inner and outer crown blocks of the factory building hoist and circulate the feed box (5) to the I track electric flat car (1-6) and the II track electric flat car (2-6), one side of the track end is also provided with the feed box, and the ball materials of the ball pressing production line are connected and output to the circulate feed box (5) by a horizontal belt and an end lifting belt; ② After the circulation feed box (5) is filled, the lifting belt conveyor is moved to feed the feed box on one side of the track, and then the I-track electric flat car (1-6) and the II-track electric flat car (2-6) are started to convey the circulation feed box (5) to an outdoor operation area; ③ The I-rail electric flat car (1-6) and the II-rail electric flat car (2-6) are stopped after running to the working range of the overhead travelling crane in an outdoor working area, and the outdoor finished overhead travelling crane (3-2) is used for lifting the circulating feed box (5) and placing the circulating feed box on a feed box bracket (3-5); ④ After the ball material is placed on a feed box bracket (3-5), the ball material is quickly dried under the high-temperature effect formed by the splayed wind collecting wing wall (3-4), the reinforced concrete enclosing wall (3-3) of the angle steel reinforced concrete column, the cylindrical condensing lens with adjustable elevation angle, the air with high flow velocity passing through an air channel formed by factory building walls adjacent to a rail supporting beam column (3-1) and sunlight gathering of the condensing lens; ⑤ The dried ball material circulation material box is loaded according to the first-in first-out principle; ⑥ The vehicle transportation circulation bin (5) reaches the outside of a user ground bin, the plug-in flashboard (5-8) at the tail part of the bin is pulled out, the rear bin plate is opened, and the ball materials in the bin are poured into the underground bin; ⑦ After the material is poured, the carriage is reset, a rear carriage plate is buckled, and a material box drawing and inserting flashboard (5-8) is put back; ⑧ The specially modified transport vehicle returns to an outdoor operation area of the ball pressing factory, and an outdoor crown block places an empty circulation feed box (5) on a feed box bracket (3-5) or directly on an electric flat car to be opened into a factory to receive ball materials; (2) Operation mode 2 ① The short belt conveyors with travelling wheels are connected after the ball outlet of the ball pressing machine and extend to an outdoor operation area all the time, ball materials are output to a circulating feed box which is arranged on a feed box bracket (3-5) in advance through a lifting belt, and when one feed box is full, the lifting belt is adjusted to output the ball materials to the feed box which is close to the other feed box; ② After the ball material is placed on a feed box bracket (3-5), the ball material is quickly dried under the high-temperature effect formed by the high-flow-rate air passing through an air duct formed by splayed wind collecting wing walls (3-4), angle steel reinforced concrete column reinforced concrete enclosing walls (3-3) and adjustable elevation angle cylindrical condensing mirrors and factory building walls adjacent to a rail supporting beam column (3-1) and the sunlight collected by the condensing mirrors; ③ Loading the dried ball material box according to a first-in first-out principle; ④ The circulating bin (5) reaches the outside of a user ground bin during vehicle transportation, the plug-in flashboard (5-8) at the tail part of the bin is pulled out, the rear compartment board is opened, and the ball materials in the bin are poured into the underground bin; ⑤ After the material is poured, the carriage is reset, a rear carriage plate is buckled, and a material box drawing and inserting flashboard (5-8) is put back; ⑥ The specially modified transport vehicle returns to an outdoor operation area of the ball pressing factory, and the outdoor crown block places an empty circulation feed box (5) on a feed box bracket (3-5) or directly places the empty circulation feed box on an electric flat car to open into a factory to receive ball materials.
  9. 9. The method for reducing powder rate and quick drying of cold-pressed pellets according to claim 8, wherein in step ⑤ of operation mode 1 and step ③ of operation mode 2, the following two loading modes are adopted: A. 2 thick steel wire ropes with rope rings at two ends penetrate through hanging hole plates (5-9) on a circulation material box, then the circulation material box (5) is hung by a finished crown block (3-2) into a specially modified transport vehicle, a roller groove and a roller are welded and installed on the inner side of a carriage plate, a transverse baffle piece (8-3) made of an alloy steel square rod with the thickness of 20-50mm penetrating through the tail of the carriage plate and a vertical baffle piece (8-4) inserted at the tail of a carriage bottom plate are arranged at the tail of the carriage so as to block the circulation material box (5) when unloading, 2 circulation material boxes (5) are placed on each carriage, then the tail baffle piece is inserted, and the carriage plate is closed; B. The special modified transport vehicle tail pair Ji Liaoxiang supports 3-5 are used for enabling roller grooves 6-4 on the vehicle and the bin supports 3-5 to be in straight line and tightly abutted against the ends of the roller grooves on the vehicle, a bolt 6-10 on a safety device at one end of the bin supports 3-5 is pulled and hung, the circulating bin 5 is pushed from the rear to slide into a specially modified transport vehicle carriage, 2 bin discharging boxes are arranged on each vehicle, and then tail blocking pieces are inserted to close a rear carriage plate.

Description

System and method for reducing powder rate and quick drying of cold-pressed ball material Technical Field The invention belongs to the technical field of material agglomeration, and particularly relates to a system and a method for reducing powder rate and quick drying of cold-pressed spherical materials. Background The ball-pressing process of double-roller with ball socket is a cold state material agglomeration process with wide application, is widely applied to various industries, is suitable for powder ore, sintered return ore, iron-containing solid waste, various sludge, waste containing other valuable substances, coal dust, coke powder and the like, and can be put into a converter, a blast furnace, a reduction shaft furnace, a rotary hearth furnace, a rotary kiln, belt roasting for further processing after ball pressing. The ball pressing method has the advantages of less investment, quick response, high efficiency and strong adaptability to materials. However, most of the enterprises at present have the defects of imperfect technology in the aspects of drying, storing and crushing materials, such as: 1. The method adopts a gentle slope ball discharging method when the strength of new balls is not high, reduces crushing, and shovels away after accumulating a certain amount, and lays a foundation for reducing crushing during subsequent shoveling and transportation because the balls are in situ for aging strengthening time. The method is obviously improved compared with the extensive frequent shoveling process, and is a technical innovation of enterprises who understand the ball pressing process. But still go through the processes of reverse piling, loading and unloading to a ground bin, and serious collision problems exist. 2. Some other enterprises adopt a mode of connecting a plurality of short belt conveyors to directly convey the newly pressed balls to a finished product warehouse pile amplification pile, and under the condition that the site is allowed, the balls are piled into a pile with valleys in the middle according to a mode of 1/4 circles (a plurality of 1/4 circles are sleeved one by one and are in a 1/4 cake shape when overlooked, namely ridge is seen from the top, the valleys are arranged between the rings, and ventilation is facilitated) so as to be ventilated as much as possible. The method is further innovated, but is limited to the control in the ball pressing production line, and the crushing of the loading link is unavoidable. 3. The space in the construction of the ball pressing production line of some enterprises is tense, when new balls fall down to form hills, the new balls are immediately shoveled to a finished product warehouse to be dried at normal temperature, or the new balls are dumped to a large pile to be dried by adopting an oil shovel, and the mode has the following two defects that firstly, the balls are not overturned in a hurry with enough age hardening time, and secondly, the large pile is too high and has no ventilation 'valley', so that the ball discharging and storing mode is the least scientific. The ball is not easy to dry in summer, and the big pile is slowly dried, so that various problems of great temperature reduction, hydrogen increase of molten steel, blasting and the like are brought to users. 4. Part of enterprises are equipped with a process for drying the ball blocks by utilizing smoke or electric heat, hardening is carried out before the ball blocks fall to the ground or before loading, so that the strength is improved, the bearing capacity of the ball for collision and bumping is enhanced, the anti-cracking capacity is improved in the subsequent overturning process, but the cost is higher, and the ball block is only suitable for high-value materials or production lines with sufficient funds. The mode is an advanced strengthening thought, no way is needed from the aspect of reducing the overturning link, and powder generated by collision and friction of the following overturning link is obviously less than that of a wet ball, namely an overturning mode. The age hardening time of the ball is insufficient, namely, the ball is dumped and pressed, the ball is repeatedly overturned and knocked, so that the powder amount is increased, the use is inconvenient for users, the pelletizing processing side is deducted, the benefit is affected, and the cost is increased by taking measures to screen out the powder and return to pelletizing again. In addition, larger dust emission is caused, which is not beneficial to the health of operators. The powder is more or insufficiently dried, which is not beneficial to users to better use and exert the due value of the materials, and mainly comprises the following steps: 1. The dust removing system pumps out a large amount of powder, so that the actual furnace feeding amount is reduced, and the load of the dust removing system is increased and equipment is failed. 2. Although the submerged arc furnace (arc resistance fu