Efficient normal-pressure reaction tank

Abstract

The utility model discloses an efficient normal-pressure reaction tank which comprises a tank body, a liquid outlet is connected to the side surface of the upper part of the outer wall of the tank body, and the liquid outlet is used for leading out liquid reacted in the tank body; a tank cover is connected to the top of the tank body, and a chlorine pipe, a liquid inlet pipe, a steam pipe, an air outlet, a compressed air pipe and a manhole are arranged on the tank cover; a guide cylinder with a semicircular section is welded on the inner wall of the tank body along the vertical direction; the chlorine gas pipe provides chlorine gas required by reaction; the liquid inlet pipe provides ore pulp required by reaction; the steam pipe is used for heating ore pulp and providing temperature required by reaction; the exhaust outlet is connected with a waste gas absorption device and is used for discharging waste gas generated by reaction; the compressed air pipe is inserted into the bottom of the guide cylinder and used for providing kinetic energy to discharge qualified ore pulp out of the tank body; a stirring motor is fixed to the center of the upper surface of the tank cover, and a stirring device is connected to the bottom of the stirring motor and extends into the tank body; the stirring device comprises a stirring shaft and stirring blades, and the stirring shaft is provided with an upper blade, a middle blade and a lower blade from top to bottom.

Description

Technical Field

[0001] The utility model belongs to the field of metallurgical equipment, and in particular relates to a high-efficiency normal-pressure reaction tank. Background Art

[0002] In the pressure leaching process of nickel and cobalt, a large amount of heat is released during the reaction inside the tank. In addition, the corrosion of the joints by steam and chlorine and structural deformation can lead to chlorine leakage. The material has a large specific gravity and will form an accumulation at the bottom of the tank, causing the bottom layer of paddles to be buried and unable to operate normally. The gas enters the tank in a single-point direct injection form, which greatly reduces the utilization rate of chlorine. During the operation of the agitator, the reaction time is long and most of the chlorine is lost through the collection port of the tank cover. Too much solid material accumulates in the tank, making it impossible to circulate and stir the material, resulting in poor stirring effect, low leaching rate, and long reaction time. When the medium in the tank reaches its maximum value, the accumulation of material will cause the agitator shaft, impeller, etc. to bend, which will in turn damage the bearings of the bracket support points. After the bearings are damaged, the reducer and motor will also be damaged. Utility Model Content

[0003] The utility model provides a high-efficiency atmospheric pressure reaction tank, which aims to effectively solve the uniform addition of gas and the reasonable design of the stirring device, improve the effective fusion of gas, liquid and solid three phases, improve the reaction efficiency, and reduce the failure rate of the equipment.

[0004] To this end, the present invention adopts the following technical solutions:

[0005] A high-efficiency atmospheric pressure reaction tank comprises a tank body, wherein the side surface of the upper portion of the outer wall of the tank body is connected to a liquid outlet, and the liquid outlet is used to discharge the liquid reacted in the tank body;

[0006] The top of the tank is connected to a tank cover, which is equipped with a chlorine pipe, a liquid inlet pipe, a steam pipe, an exhaust port, a compressed air pipe and a manhole; a semicircular guide tube is welded vertically on the inner wall of the tank;

[0007] The chlorine pipe provides the chlorine required for the reaction; the liquid inlet pipe provides the ore pulp required for the reaction; the steam pipe is used to heat the ore pulp and provide the required temperature for the reaction; the exhaust port is connected to the exhaust gas absorption device to remove the exhaust gas generated by the reaction; the compressed air pipe is inserted into the bottom of the guide tube to provide kinetic energy to discharge the qualified ore pulp out of the tank;

[0008] A stirring motor is fixed at the center of the upper surface of the tank cover, and a stirring device is connected to the bottom of the stirring motor, which extends into the tank body; the stirring device includes a stirring shaft and stirring blades, and the stirring shaft is respectively provided with upper blades, middle blades and lower blades from top to bottom.

[0009] Furthermore, a trough bottom support is welded to the bottom of the trough body, and the trough bottom support is made of channel steel arranged at equal distances.

[0010] Furthermore, the chlorine pipe and the bottom of the steam are provided with a plurality of evenly distributed gas outlets.

[0011] The beneficial effects of this utility model are as follows: the stirring shaft is equipped with upper, middle, and lower blades, which can enhance the stirring effect and prevent the accumulation of materials that would cause stirring difficulties. The upper blade is a four-blade open turbine agitator, and the middle and lower blades are three-blade swept-back paddles. The four-blade open turbine blades generate axial force, and their main function is to promote the exchange of fluids, forcing convection and uniform mixing of gas and liquid media. They can cooperate with the three-blade swept-back paddles to prevent splashing of liquid during circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the reaction tank of the utility model;

[0013] In the figure: tank body 1, tank bottom support 11, liquid outlet 12, guide tube 13, tank cover 2, chlorine pipe 21, liquid inlet pipe 22, steam pipe 23, exhaust port 24, compressed air pipe 26, manhole 27, seal 28, air outlet 29, stirring device 3, frequency conversion motor 31, reducer 32, stirring bracket 33, stirring shaft 34, upper blade 35, middle blade 36, lower blade 37. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0015] like Figure 1 As shown, the utility model discloses a high-efficiency normal pressure reaction tank, including a tank body 1, a tank bottom support 11, a liquid outlet 12, a guide tube 13, a tank cover 2, a chlorine pipe 21, a liquid inlet pipe 22, a steam pipe 23, an exhaust port 24, a chlorine pipe 21, a compressed air pipe 26, a manhole 27, a seal 28, an air outlet 29, an air outlet 29, an air outlet 29, a stirring device 3, a frequency conversion motor 31, a reducer 32, a stirring bracket 33, a stirring shaft 34, an upper blade 35, a middle blade 36, and a lower blade 37.

[0016] The trough body 1 is in contact with the ground using a trough bottom support 11, which is made of Q235 channel steel arranged at equal distances and welded to the trough bottom; a liquid outlet 12 is set on the side, which is set on the upper part of the guide tube and is lined with corrosion-resistant and high-temperature resistant pipes; a guide tube 13 is set on the inner wall, which is made of titanium and has a semicircular structure and is welded to the inner wall of the trough body 1.

[0017] The tank cover 2 is sequentially equipped with a chlorine pipe 21, a liquid inlet pipe 22, a steam pipe 23, an exhaust port 24, a compressed air pipe 26, and a manhole 27. A flanged opening on the top of the tank cover connects to the pipe flanges, which extend deep into the tank body 1. The chlorine pipe 21 provides the chlorine required for the reaction; the liquid inlet pipe 22 provides the ore slurry required for the reaction; the steam pipe 23 heats the ore slurry to provide the required reaction temperature; the exhaust port 24 is connected to the exhaust gas absorption device to remove the exhaust gas generated by the reaction; the compressed air pipe 26 is inserted into the bottom of the guide tube 13 to provide kinetic energy to allow the ore slurry that has passed the reaction to be discharged from the tank body 1; and the manhole 27 is used to enter the tank body 1 for equipment maintenance or troubleshooting.

[0018] The stirring device 3 is equipped with a variable frequency motor 31, a speed reducer 32, a stirring bracket 33, a stirring shaft 34, an upper blade 35, a middle blade 36, and a lower blade 37. The variable frequency motor 31 automatically adjusts the stirring speed according to the slurry density and torque.

[0019] The chlorine pipe 21 and the steam pipe 23 are sequentially provided with a plurality of evenly distributed gas outlets 29, gas outlets 29, and gas outlets 29, which are used to evenly add gas, improve the gas fusion effect and heating uniformity, and improve the reaction efficiency.

[0020] The seal 28 is located between the tank body and the tank cover, and plays a sealing role to prevent gas leakage during the reaction process from polluting the on-site environment.

[0021] The stirring shaft 34 is equipped with upper blades 35, middle blades 36, and lower blades 37. The upper blades 35 are four-pitch-blade open turbine agitators, while the middle blades 36 and lower blades 37 are three-blade swept blades. The four-pitch-blade open turbine blades generate axial force, primarily promoting vertical fluid exchange, forcing convection and uniform mixing of the gas-liquid medium. They can be combined with three-blade swept blades to prevent splashing during the circulation process. Three-blade swept blades offer a higher volumetric circulation rate and shearing effect, and can adapt to increased viscosity during the reaction process, allowing a single layer to replace multiple layers in other agitators. In a three-blade swept agitator, the liquid flow rotates upward near the tank wall and downward from the center, creating a circular flow. The circulation effect of the three-blade swept blades requires the use of finger-shaped baffles distributed on the tank sidewalls to optimize chlorine gas dispersion. These blades can break up and disperse the bubbles of material and chlorine gas, ensuring full contact between the material and chlorine gas.

[0022] After the slurry reaction is complete, the compressed air pipe 26 is opened to blow air to the bottom of the guide tube 13, so that the slurry rises along the guide tube and is discharged from the liquid outlet 12 to enter the next process.

Claims

1. A high-efficiency atmospheric pressure reactor, characterized in that: The tank body comprises a liquid outlet connected to the side of the upper outer wall of the tank body, and the liquid outlet is used to discharge the liquid reacted in the tank body; The top of the tank is connected to a tank cover, which is equipped with a chlorine pipe, a liquid inlet pipe, a steam pipe, an exhaust port, a compressed air pipe and a manhole; a semicircular guide tube is welded vertically on the inner wall of the tank; The chlorine pipe provides the chlorine required for the reaction; the liquid inlet pipe provides the ore pulp required for the reaction; the steam pipe is used to heat the ore pulp and provide the required temperature for the reaction; the exhaust port is connected to the exhaust gas absorption device to remove the exhaust gas generated by the reaction; the compressed air pipe is inserted into the bottom of the guide tube to provide kinetic energy to discharge the qualified ore pulp out of the tank; A stirring motor is fixed at the center of the upper surface of the tank cover, and a stirring device is connected to the bottom of the stirring motor. The stirring device extends into the tank body; the stirring device includes a stirring shaft and stirring blades. The stirring shaft is respectively provided with an upper blade, a middle blade and a lower blade from top to bottom; The upper blade is a four-blade open turbine agitator, the middle blade and the lower blade are three-blade swept blades, and finger-shaped baffles are distributed on the side walls of the tank.

2. A high-efficiency atmospheric pressure reactor according to claim 1, characterized in that: The bottom of the trough body is welded with trough bottom supports, and the trough bottom supports are arranged at equal distances using channel steels.

3. A high-efficiency atmospheric pressure reactor according to claim 1, characterized in that: The chlorine pipe and the bottom of the steam are provided with a plurality of evenly distributed gas outlets.

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