CN-122007127-A - Complete equipment for red mud treatment

CN122007127ACN 122007127 ACN122007127 ACN 122007127ACN-122007127-A

Abstract

The invention discloses complete equipment for red mud treatment, which comprises a proportioning device, a red mud stirrer, a granulator, a solid phase reactor, a pulverizer and a magnetic separator, wherein the proportioning device, the red mud stirrer, the granulator, the solid phase reactor, the pulverizer and the magnetic separator are sequentially arranged from front to back, the red mud stirrer comprises a frame, a charging barrel is arranged on the frame, a stirring shaft is arranged on the frame, a cooling channel is arranged on the stirring shaft, a liquid inlet channel and a liquid outlet channel which can be communicated with the outer surface of the stirring shaft and the cooling channel are arranged on the stirring shaft, a first liquid containing chamber which surrounds the stirring shaft and is communicated with the liquid inlet channel is arranged on the frame, a liquid inlet which can be communicated with the first liquid containing chamber and the outside is arranged on the frame, a second liquid containing chamber which surrounds the stirring shaft and is communicated with the liquid outlet channel is arranged on the frame, and a liquid outlet which can be communicated with the second liquid containing chamber and the outside is arranged on the frame. The invention can realize full stirring and deep reduction for red mud treatment, thereby ensuring the red mud treatment effect.

Inventors

WANG XUAN
MA JIANG
MA KAI
LIN LIPING
MENG QINGLIAN
LIU XIUMEI
MA LIANTAO

Assignees

山东明通环境科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260213

Claims (10)

1. The red mud treatment complete equipment comprises a batching device, a red mud stirrer, a granulator, a solid phase reactor, a pulverizer and a magnetic separator which are sequentially arranged from front to back, wherein the red mud stirrer comprises a frame (1), the frame (1) is provided with a rotatable charging barrel (2), the upper part of the charging barrel (2) is provided with a barrel cover (3) capable of being opened, the frame (1) is provided with two stirring shafts (4) which can extend into the charging barrel (2) and rotate, the bottom of an inner cavity of the charging barrel (2) is provided with a discharge opening, the red mud treatment complete equipment is characterized in that the stirring shafts (4) are provided with stirring vane layers (5) which are arranged at intervals up and down and can ensure full stirring of red mud slurry, at least one stirring shaft (4) in the two stirring shafts (4) is provided with a cooling channel (41) positioned inside the stirring shaft (4), the stirring shaft (4) is provided with a liquid inlet channel (42) and a liquid outlet channel (43) which can be communicated with the outer surface of the stirring shaft (4) and the cooling channel (41), the frame (1) is provided with a first liquid inlet (11) which is communicated with the first liquid inlet (11) of the frame (1) and a second liquid inlet (13) which is communicated with the outer cavity (11), the machine frame (1) is provided with a liquid outlet (14) which can be communicated with the second liquid containing chamber (13) and the external environment, and the first liquid containing chamber (11) and the second liquid containing chamber (13) are axially spaced on the stirring shaft (4).
2. The red mud treatment complete equipment according to claim 1, wherein an anti-wrapping ring (6) is arranged in the interval between two stirring blade layers (5) which are adjacent up and down, the anti-wrapping ring (6) is sleeved on the stirring shaft (4) and is propped against the stirring blade layer (5) which is positioned below the two stirring blade layers (5) which are adjacent up and down, and the anti-wrapping ring (6) and the outer surface of the stirring shaft (4) are spaced in the radial direction of the stirring shaft (4).
3. The red mud treatment complete equipment according to claim 1, wherein the stirring vane layer (5) comprises two stirring paddles (51) arranged on the stirring shaft (4), and the two stirring paddles (51) are opposite to each other in the radial direction of the stirring shaft (4).
4. A red mud treatment complete equipment according to claim 3, wherein the outer ends of two stirring paddles (51) in the stirring vane layers (5) are provided with stirring plates (511) extending in the up-down direction, when the number of the stirring vane layers (5) with the stirring plates (511) is greater than one, the two stirring plates (511) which are adjacent up-down are opposite one another in the up-down direction and are provided with intervals in the up-down direction, and the stirring plates (511) can scrape red mud slurry on the inner side wall of the charging barrel (2) after reaching a position close to the inner side wall of the charging barrel (2) under the driving of the rotation of a stirring shaft (4).
5. A red mud treatment plant according to claim 3, characterized in that two stirring paddles (51) in one stirring blade layer (5) below the stirring shaft (4) are provided with a profiled stirring frame (7), the profiled stirring frame (7) comprising a downwardly extending longitudinal extension, the lower part of the longitudinal extension being provided with a horizontal extension extending radially of the stirring shaft (4) towards the outside of the cartridge (2).
6. The red mud treatment complete equipment according to claim 1, wherein the frame (1) is provided with a hinge shaft, the frame (1) is hinged with a scraper (9) through the hinge shaft, the scraper (9) is positioned in the charging barrel (2) and the bottom of the scraper (9) is close to the bottom of an inner cavity of the charging barrel (2), the frame (1) is provided with a driving piece for driving the hinge shaft to rotate, and one side of the scraper (9) away from the hinge shaft can be close to and away from a discharge opening at the bottom of the inner cavity of the charging barrel (2) after the scraper (9) swings.
7. The red mud treatment complete equipment according to claim 1, wherein the solid-phase reactor comprises a barrel body (101) and a feeding port (102), the feeding port (102) is arranged in a downward inclined mode, the upper side and the lower side of the feeding port (102) are respectively located outside the barrel body (101) and inside the barrel body (101), a plurality of protruding pieces (103) are arranged on the inner wall of the barrel body (101), the protruding pieces (103) are distributed at intervals along the circumferential direction of the barrel body (101), the inner side walls of the protruding pieces (103) protrude into the barrel body (101), a steady flow section (111) which is bent outwards is arranged on the side, close to the feeding port (102), of the barrel body (101), a plurality of material following belts (104) are arranged on the inner side wall of the steady flow section (111) in a surrounding mode, and the material following belts (104) are arranged in a downward inclined mode from the side, close to the side, far away from the feeding port (102).
8. The red mud treatment complete equipment according to claim 7, wherein the steady flow section (111) comprises a flaring section and a necking section, the flaring section and the necking section are connected in the axial direction of the cylinder body (101), the distance between the necking section and the feeding port (102) is larger than the distance between the flaring section and the feeding port (102), the diameter of the flaring section gradually increases from one side close to the feeding port (102) to one side far away from the feeding port (102), the diameter of the necking section gradually decreases from one side close to the feeding port (102) to one side far away from the feeding port (102), and the minimum diameters of the flaring section and the necking section are matched with the diameter of the inner wall of the cylinder body (101).
9. The red mud treatment complete equipment according to claim 7, wherein the inner side wall of the protruding piece (103) is arc-shaped protruding towards the inside of the cylinder body (101), the protruding piece (103) extends along the axial direction of the cylinder body (101), and the protruding pieces (103) are distributed at equal intervals along the circumferential direction of the cylinder body (101).
10. The red mud treatment complete equipment according to claim 7, wherein one side of the material-smoothing belt (104) away from the steady flow section (111) is positioned between two adjacent bulge pieces (103) in the circumferential direction of the cylinder (101).

Description

Complete equipment for red mud treatment Technical Field The invention relates to the technical field of red mud reduction equipment, in particular to complete equipment for red mud treatment. Background Red mud is an overbased solid waste produced in the alumina production process, and a large amount of the overbased solid waste is piled up to pose serious threat to the environment and the safety. The red mud contains a large amount of oxides of iron, aluminum and sodium, and valuable elements such as iron, aluminum and titanium are recovered through reduction smelting or solid reduction, so that the method is an important direction of the current recycling of the red mud. The invention discloses a red mud dealkalization device and a method, belonging to the technical field of red mud dealkalization, which are disclosed in China patent application number 2024102608388. The red mud dealkalizing device comprises a base, a hollow cylindrical mixer, a feeding unit and a discharging unit, wherein the mixer is arranged on the base and is divided into three parts from top to bottom, namely a feeding area, a stirring area and a discharging area, a red mud inlet is formed in the top end of the feeding area, a plurality of water inlets are formed in the side wall of the feeding area, the water inlets are arranged in the tangential direction of the side wall of the mixer and are all in left-handed or right-handed directions, the inside of the stirring area is a straight cylinder with the same inner diameter up and down, a discharging hole is formed in the center of the bottom of the discharging area, and a reflux plate is arranged above the discharging area in the mixer. According to the invention, water enters the mixer to form a state of rotary flow, red mud powder is thrown into the rotary flow water from the top of the container to realize primary mixing, and the reflux plate forces alkali liquor to flow out from the periphery of the reflux plate to ensure that the red mud powder and the water are fully mixed, so that the mixing efficiency is improved. Because stirring blades are not adopted, repeated disassembly and assembly of the transmission device are avoided. The inventor provides a red mud treatment process, which adopts high Wen Tuojian pre-reduction and high-temperature deep reduction melting separation to realize efficient dealkalization and iron element reduction separation, so that the red mud is deeply treated and utilized, and solid-phase high-temperature reduction is performed by utilizing the porous property of ceramsite, but no set of existing equipment is used for realizing the process. Disclosure of Invention The invention aims to solve the technical problem of providing a red mud treatment complete equipment for realizing full stirring and deep reduction of red mud treatment. In order to solve the technical problems, the red mud treatment complete equipment comprises a batching device, a red mud stirrer, a granulator, a solid-phase reactor, a pulverizer and a magnetic separator which are sequentially arranged from front to back, wherein the red mud stirrer comprises a frame, the frame is provided with a rotatable charging barrel, the upper part of the charging barrel is provided with a barrel cover which can be opened, the frame is provided with two stirring shafts which can extend into the charging barrel and can rotate, the bottom of an inner cavity of the charging barrel is provided with a discharge opening, the red mud treatment complete equipment is characterized in that the stirring shafts are provided with a plurality of stirring blade layers which are arranged at intervals up and down and can ensure that red mud slurry is fully stirred, at least one stirring shaft of the two stirring shafts is provided with a cooling channel which is positioned inside the stirring shafts, the stirring shafts are provided with a liquid inlet channel and a liquid outlet channel which can be communicated with the outer surface of the stirring shafts, the frame is provided with a first liquid containing cavity which can be communicated with the liquid inlet channel, the frame is provided with a liquid inlet which can be communicated with the first liquid containing cavity and the external environment, and the frame is provided with a second liquid containing cavity which can be communicated with the liquid outlet channel, and the frame is provided with the second liquid containing cavity which can be communicated with the second liquid cavity which can be axially arranged on the first liquid cavity. An anti-wrapping ring is arranged in the interval between the two upper and lower adjacent stirring blade layers, the anti-wrapping ring is sleeved on the stirring shaft and propped against the stirring blade layer positioned below the two upper and lower adjacent stirring blade layers, and the anti-wrapping ring and the outer surface of the stirring shaft are radially spaced. The stirring vane layer comprises