CN-116294566-B - Rotary kiln waste heat recovery device for ferromolybdenum smelting and use method thereof

CN116294566BCN 116294566 BCN116294566 BCN 116294566BCN-116294566-B

Abstract

The invention relates to the field of rotary kilns. The invention discloses a rotary kiln waste heat recovery device for ferromolybdenum smelting and a use method thereof, which aim to solve the problems that waste heat recovery is usually carried out through a heat exchanger when a rotary kiln is in operation, but the temperature of the outer wall of a cylinder of the rotary kiln can reach higher temperature, the waste heat recovery is carried out on the outer wall of the cylinder by existing equipment, the consumption of absorbed heat in the transferring process is larger, the effect of heat conversion cannot be effectively achieved, the generated heat of the rotary kiln is further wasted, ferromolybdenum stacking is caused when the rotary kiln is used for blanking after ferromolybdenum smelting, the heavy weight of subsequent vibrating screen processing equipment is greatly worn, and the service life of subsequent equipment is influenced. According to the invention, the waste heat of the outer wall of the cylinder body can be recovered by the waste heat recovery equipment, and the generated heat energy can be rapidly utilized after recovery, so that dust and impurities generated by the rotary kiln can be reduced.

Inventors

ZHANG TIEJUN
KANG HAILONG
ZHANG XINYU
Quan Kuiyong
WAN MINKAI

Assignees

朝阳金达钼业有限责任公司

Dates

Publication Date: 20260512
Application Date: 20230220

Claims (5)

1. The rotary kiln waste heat recovery device for ferromolybdenum smelting comprises a rotary kiln body (1), wherein the rotary kiln body (1) comprises a cylinder body (11), a riding wheel (13), a transmission device (16) and two big gear rings (14), the riding wheel (13) and the transmission device (16) are placed on the ground, the cylinder body (11) is arranged on the riding wheel (13), the cylinder body (11) is placed on the riding wheel (13) and is provided with a belt (12), the two big gear rings (14) are arranged on the outer wall of the cylinder body (11), the big gear rings (14) are in transmission fit with the transmission device (16), the transmission device (16) comprises a bearing frame (161), a transmission motor (162), a transmission rod (163) and two pinions (164), the bearing frame (161) is horizontally placed on the ground, the transmission motor (162) is fixedly arranged on the bearing frame (161), the transmission rod (163) is arranged on a main shaft of the transmission motor (162), the transmission rod (163) is in running fit with the bearing frame (161), the two pinions (163) are arranged on the outer walls of the two pinions (164) and are engaged with the two big gear rings (14) respectively, kiln openings and kiln tails are respectively arranged at two ends of the cylinder body (11), kiln covers (15) are arranged on the kiln openings and the kiln tails, the bottom of the waste heat recovery device (2) is placed on the ground, and the inner wall of the waste heat recovery device (2) is attached to the outer wall of the cylinder body (11); The waste heat recovery device (2) comprises a waste heat recovery box (21), the bottom of the waste heat recovery box (21) is placed on the ground, the outer wall of the waste heat recovery box (21) is attached to the outer wall of the cylinder body (11), water is filled in the waste heat recovery box (21), an arc-shaped slide way (111) is formed in the outer wall of the cylinder body (11) attached to the waste heat recovery box (21), a rotating piece (3) is arranged in the waste heat recovery box (21), the rotating piece (3) is arranged at the inner bottom of the waste heat recovery box (21), and the rotating piece (3) is in sliding fit with the arc-shaped slide way (111); The rotary piece (3) comprises a universal ball body (31), a heat conducting rod (32) and a swinging poking piece (34), wherein the universal ball body (31) is arranged at the inner bottom of the waste heat recovery box (21), the universal ball body (31) is in running fit with the inner bottom of the waste heat recovery box (21), the heat conducting rod (32) is fixedly arranged on the universal ball body (31), the heat conducting rod (32) is positioned at the lower half part of the universal ball body (31) and is positioned outside the waste heat recovery box (21), a friction head (33) is further arranged at the bottom of the heat conducting rod (32), the friction head (33) is in sliding fit with an arc-shaped slide way (111), the heat conducting rod (32) is positioned at the upper half part of the universal ball body (31) and is positioned in the waste heat recovery box (21), the swinging poking piece (34) is fixedly arranged at the top of the heat conducting rod (32), and the swinging poking piece (34) is in an arc shape; The kiln mouth part of the cylinder body (11) is also provided with a vibrating and blanking piece (5), the vibrating and blanking piece (5) is positioned in a kiln hood (15) at the kiln mouth part, the vibrating and blanking piece (5) comprises a collecting box body (51), a supporting seat (52), a double-shaft motor (53) and two groups of vibrating and blanking pieces (6) which are symmetrically arranged, the collecting box body (51) is arranged in the kiln hood (15) at the kiln mouth part, the supporting seat (52) is fixedly arranged on the outer wall of the collecting box body (51), the double-shaft motor (53) is arranged on the supporting seat (52), the two groups of vibrating and blanking pieces (6) are respectively arranged on the supporting seat (52), and the two groups of vibrating and blanking pieces (6) are in running fit with the supporting seat (52).
2. The rotary kiln waste heat recovery device for ferromolybdenum smelting according to claim 1, wherein a pressure limiting valve (35) is further arranged on the outer wall of the waste heat recovery box (21), and the pressure limiting valve (35) is positioned in a kiln cover (15) at the tail part of the kiln.
3. The device for recovering waste heat of a rotary kiln for smelting ferromolybdenum according to claim 2, wherein the stirring piece (4) is further arranged at the middle section of the cylinder (11), the stirring piece (4) comprises a fixing frame (41), a first bevel gear (42), a second bevel gear (43), a rotating rod (44), a half-way gear disc (45), a ring sleeve (46) and two cage gears (47), the fixing frame (41) is arranged on the ground, the first bevel gear (42) is arranged on the transmission rod (163), the rotating rod (44) is in rotating fit with the fixing frame (41), the second bevel gear (43) is arranged on the rotating rod (44), the second bevel gear (43) is meshed with the first bevel gear (42), the half-way gear disc (45) is arranged on the rotating rod (44), the ring sleeve (46) is arranged on the cylinder (11), the ring sleeve (46) is in rotating fit with the cylinder (11), the ring sleeve (46) divides the cylinder (11) into a left part and a right part, the two cage gears (47) are respectively arranged on two ends of the ring sleeve (47) in rotating fit with the two cage gears (11), the situation that the ring sleeve (46) leaks air and dissipates heat in the rotating process is avoided, the cage gear (47) is meshed with the half-direction gear disc (45), and a plurality of protruding blocks (461) are further arranged on the inner wall of the ring sleeve (46).
4. The device for recovering waste heat of a rotary kiln for smelting ferromolybdenum according to claim 3, wherein the two groups of vibrating and falling pieces (6) comprise a driving rod (61), a sleeve rod (62), a supporting frame (63), an elastic spring (64), an arc-shaped clamping seat (65), a driving disc (66), a driving poking piece (67), a belt (68), a sliding seat (69), a driving block (691), a reset spring (692) and a vibrating and falling frame (693), the driving rods (61) on the two groups of vibrating and falling pieces (6) are respectively in transmission fit with two main shafts of a double-shaft motor (53), the sleeve rod (62) is sleeved on the driving rod (61), the sleeve rod (62) is in rotary fit with a supporting seat (52) and also in sliding fit with the supporting seat (52), the supporting frame (63) is fixedly arranged at the top of the supporting seat (52), the driving disc (66) is arranged on the supporting frame (63) in rotary fit, the arc-shaped clamping seat (65) is fixedly arranged at the top of the supporting seat (52), the driving disc (66) is also in rotary fit with the supporting seat (63), the driving disc (661) is also in sliding fit with the driving disc (67) and is fixedly arranged on the driving disc (661) and is in sliding fit with the supporting disc (67), the utility model discloses a vibrating tray, including arc cassette (65) and support frame (63), arc cassette (65) are the slope setting at both ends, the position conflict cooperation that drive plectrum (67) and arc cassette (65) both ends are the slope setting, the both ends of elastic spring (64) are connected with supporting seat (52) and support frame (63) respectively, the fixed top that sets up in collecting box body (51) of sliding seat (69), driving block (691) slip setting is on sliding seat (69), the both ends of belt (68) are connected with driving disk (66) and driving block (691) respectively, the both ends of reset spring (692) are connected with inner wall and driving block (691) of sliding seat (69) respectively, shake and fall frame (693) set up on loop bar (62), set up the movable groove on the outer wall of sliding seat (69), two sets of driving block (691) outer wall fixedly connected with blanking board (694) on falling piece (6), blanking board (694) are located collecting box body (6951), shake and fall frame (693) and form flexible material hole (694).
5. The method for using the rotary kiln waste heat recovery device for ferromolybdenum smelting according to claim 4, comprising the following steps: S1, when the rotary kiln body (1) smelts ferromolybdenum, the temperature of the outer wall of a cylinder body (11) in the rotary kiln body (1) is gradually increased, after the temperature of the outer wall of the cylinder body (11) is increased, the temperature of the outer wall of the cylinder body (11) is transferred into a waste heat recovery box (21), an operator fills water into the waste heat recovery box (21), the water absorbs heat from the outer wall of the cylinder body (11), the heat of the outer wall of the cylinder body (11) is absorbed to achieve the waste heat recovery effect, the rotary kiln body (1) is arranged through a transmission device (16), a transmission motor (162) drives a transmission rod (163) to rotate, the transmission rod (163) drives two pinions (164) to rotate, the two pinions (164) drive a large gear ring (14) to rotate, when the cylinder body (11) rotates, an arc-shaped slideway (111) arranged on the outer wall of the cylinder body (11) is contacted with a friction head (33) on a heat conducting rod (32), the heat conducting rod (32) is further driven by a universal ball body (31) to rotate in the waste heat recovery box (21), and the waste heat can be deflected in the waste heat recovery box (21) when the heat recovery box (21) is not driven to rotate, and the waste heat recovery box (32) is further rotated, the pressure limiting valve (35) on the waste heat recovery box (21) is arranged towards the kiln cover (15), so that after water in the waste heat recovery box (21) absorbs heat from the cylinder (11) to reach a boiling point to generate steam, the pressure limiting valve (35) can be opened to move towards the kiln cover (15) to carry out dust fall treatment on dust impurities at the tail part of the kiln, further, the heat generated by the outer wall of the cylinder (11) can be rapidly utilized to carry out dust fall treatment on the tail part of the kiln through the waste heat recovery box (21), and when the friction head (33) is contacted with the arc-shaped slide way (111), the friction head (33) can transfer the heat generated by friction into the waste heat recovery box (21) through the heat conducting rod (32), so that the water in the waste heat recovery box (21) can be heated up, and the heat recovery efficiency of the waste heat recovery box (21) is improved; S2, when the transmission device (16) drives the cylinder body (11) to rotate, the transmission rod (163) on the transmission device (16) drives the first bevel gear (42) to rotate, the first bevel gear (42) drives the second bevel gear (43) to rotate, the second bevel gear (43) rotates to drive the rotating rod (44) to rotate, the rotating rod (44) drives the half-way gear disc (45) to rotate, the half-way gear disc (45) indirectly drives the two cage gears (47) to rotate, and then the two cage gears (47) can enable the annular sleeve (46) to realize forward rotation and reverse rotation on the cylinder body (11), and the annular sleeve (46) enables a plurality of protruding blocks (461) arranged on the inner wall of the annular sleeve (46) to stir the ferromolybdenum material being conveyed in the cylinder body (11) in a forward rotation and reverse rotation mode, so that the situation of accumulating materials in the process of processing and conveying the ferromolybdenum material is avoided; S3, after the smelting of the ferromolybdenum by the rotary kiln is finished, the ferromolybdenum falls on the blanking plate (694) through the discharging end of the kiln mouth part, at the moment, the double-shaft motor (53) drives the driving rods (61) on the two groups of vibrating and falling pieces (6) to rotate, the driving rods (61) drive the sleeve rods (62) to rotate, the sleeve rods (62) drive the driving poking pieces (67) arranged on the sleeve rods (62) to rotate, the driving poking pieces (67) rotate and collide with the bulges (661) on the driving disc (66), the driving disc (66) rotates on the supporting frame (63) through the bulges (661), the driving disc (66) rotates on the supporting frame (63) and pulls the driving blocks (691) to move on the sliding seat (69), the driving blocks (691) move to drive the blanking plate (694) to move to the blanking end of the kiln mouth part, the ferromolybdenum material at the blanking end is connected with the blanking plate (694) to rotate, at the moment, the vibrating and falling plates (67) are stacked on the kiln mouth part, the vibrating and then the vibrating and the vibrating plates (67) are continuously arranged on the supporting frame (63) to affect the vibration sieve, and then the vibration sieve is continuously to form a sieve, the driving plectrum (67) transversely moves to drive the loop bar (62) to transversely move on the driving bar (61), the loop bar (62) transversely moves on the driving bar (61) to drive the vibrating frame (693), at the moment, the vibrating frame (693) transversely breaks up the ferromolybdenum stacked on the blanking plate (694), the ferromolybdenum is spread on the blanking plate (694), the efficiency of the ferromolybdenum vibrating screen is improved when the ferromolybdenum is subsequently vibrated, the poor vibrating screen efficiency of the ferromolybdenum caused by stacking the ferromolybdenum is avoided, the blanking plate (694) can be pulled to equipment for the subsequent processing of the ferromolybdenum by the reset spring (692), the conveying break up is realized when the ferromolybdenum is discharged by adopting the mode, the subsequent processing efficiency of the ferromolybdenum is effectively improved, the ferromolybdenum is conveyed by adopting the conveying mode, the equipment is prevented from continuously increasing the service life of the equipment in the barrel (11) when the ferromolybdenum is subsequently processed, the service life of the equipment is greatly prolonged, and the service life of the equipment is further prolonged.

Description

Rotary kiln waste heat recovery device for ferromolybdenum smelting and use method thereof Technical Field The invention relates to the field of rotary kilns, in particular to a rotary kiln waste heat recovery device for ferromolybdenum smelting and a use method thereof. Background The rotary kiln is a rotary calcining kiln (commonly called a rotary kiln) and belongs to the class of building material equipment. Rotary kilns can be classified into cement kilns, metallurgical chemical kilns and lime kilns according to the materials to be treated. The cement kiln is mainly used for calcining cement clinker, and is divided into two main types, namely cement kiln produced by dry method and cement kiln produced by wet method. The metallurgical chemical kiln is mainly used for magnetizing roasting of lean iron ore in iron and steel plant, oxidizing roasting of chromium and nickel iron ore, roasting of high alumina bauxite ore in refractory material plant, roasting of clinker and aluminium hydroxide in aluminium plant, and roasting of chromium ore sand and chromium ore powder in chemical plant. Lime kilns (i.e., active lime kilns) are used to calcine active lime and light burned dolomite for iron and steel plants and ferroalloy plants. The existing rotary kiln is used for carrying out waste heat recovery on ferromolybdenum in the smelting process of ferromolybdenum usually through a heat exchanger, but the temperature of the outer wall of the cylinder of the rotary kiln can also reach higher temperature, the existing equipment is used for carrying out waste heat recovery on the outer wall of the cylinder, the consumption of absorbed heat in the transferring process is larger, the effect of heat conversion cannot be effectively achieved, the generated heat of the rotary kiln is further wasted, the rotary kiln can lead ferromolybdenum to stack after ferromolybdenum is smelted, the follow-up vibrating screen processing equipment is greatly worn due to heavy weight, and the service life of follow-up equipment is influenced. Disclosure of Invention The invention aims to provide a rotary kiln waste heat recovery device for ferromolybdenum smelting and a use method thereof, so as to solve the problems in the background technology. The rotary kiln waste heat recovery device for ferromolybdenum smelting comprises a rotary kiln body, wherein the rotary kiln body comprises a cylinder body, a riding wheel, a transmission device and two big gear rings, the riding wheel and the transmission device are placed on the ground, the cylinder body is arranged on the riding wheel, a wheel belt is arranged at the position of the riding wheel, the two big gear rings are arranged on the outer wall of the cylinder body, the big gear rings are in transmission fit with the transmission device, the transmission device comprises a bearing frame, a transmission motor, a transmission rod and two small gears, the bearing frame is horizontally placed on the ground, the transmission motor is fixedly arranged on the bearing frame, the transmission rod is arranged on a main shaft of the transmission motor, the transmission rod is in running fit with the bearing frame, the two small gears are arranged on the transmission rod and are respectively meshed with the two big gear rings, waste heat recovery equipment is further arranged on the outer wall of the cylinder body, kiln mouth and kiln tail are respectively arranged at two ends of the cylinder body, kiln mouth and kiln tail are respectively provided with kiln covers, the bottom of the waste heat recovery equipment is placed on the inner wall of the cylinder body, and the waste heat recovery equipment is attached to the ground. Preferably, the waste heat recovery device comprises a waste heat recovery box, the bottom of the waste heat recovery box is placed on the ground, the outer wall of the waste heat recovery box is attached to the outer wall of the barrel, water is filled in the waste heat recovery box, an arc-shaped slideway is arranged on the outer wall of the barrel attached to the waste heat recovery box, a rotating piece is arranged in the waste heat recovery box, the rotating piece is arranged at the inner bottom of the waste heat recovery box, and the rotating piece is in sliding fit with the arc-shaped slideway. Preferably, the rotating member comprises a universal ball body, a heat conducting rod and a swing pulling piece, wherein the universal ball body is arranged at the inner bottom of the waste heat recovery box, the universal ball body is in running fit with the inner bottom of the waste heat recovery box, the heat conducting rod is fixedly arranged on the universal ball body, the heat conducting rod is positioned at the lower half part of the universal ball body and is positioned outside the waste heat recovery box, the bottom of the heat conducting rod is further provided with a friction head which is in sliding fit with the arc-shaped slide way, the heat conducting rod is positi