CN209456087U - A kind of production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater - Google Patents
A kind of production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater Download PDFInfo
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- CN209456087U CN209456087U CN201822174905.7U CN201822174905U CN209456087U CN 209456087 U CN209456087 U CN 209456087U CN 201822174905 U CN201822174905 U CN 201822174905U CN 209456087 U CN209456087 U CN 209456087U
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Abstract
The utility model relates to fused salt heating tech field, the slurry outlet on pulp tank and ore pulp import is arranged in through the heat exchanger tube being arranged in pulp tank in especially production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater, including pulp tank；Heat exchange tube inlet end is provided with fused salt slot, and heat transfer tube outlet end is provided with fused salt outlet；Fused salt outlet is connected to by pump inlet pipe with the entrance of pump；The outlet of pump is connected to by pump-out pipe with fused salt slot；Liquid supplementation pipe is provided on fused salt slot；Having heaters is set on fused salt slot and/or fused salt outlet.By the liquid supplementation pipe setting on fused salt slot, viscosity, the concentration of fused salt can not only effectively be controlled, and it can be in time to carrying out supplement high-temperature molten salt in digestion series, adjust system temperature, reach control fused salt circulating-heating tube digestion aluminium oxide purpose, and the setting Jing Guo heater locations, the temperature before and after fused salt heat exchanging can be effectively controlled, fused salt heat exchanging tube digestion alumina leaching efficiency is improved.
Description
Technical field
The utility model relates to fused salt heating tech field, especially a kind of production of aluminum hydroxide alumina leaching work
Section fused salt circulating heater.
Background technique
In aluminum hydroxide product preparation process, usually use aluminium stone ore for raw material, by alumina tube digestion
System dissolution processing is prepared.Alumina tube digestion system is divided into pulp pre-heating section, ore pulp bringing-up section, ore pulp dissolution instead
Answer section, ore pulp spontaneous evaporation section, condensate evaporation section.Bauxite is being used to carry out in dissolution treatment process for raw material, leaching temperature
It is more demanding, it needs at 260-280 DEG C, so that needing heating carrier temperature at 290 DEG C or more.
Currently, being high steam or inorganic fused salt in the heating carrier that bringing-up section uses, require to change using high steam
The wall thickness of heat pipe is larger, causes cost of investment higher, and also results in thermal coefficient and significantly reduce.Using inorganic fused salt
As heat carrier, it is desirable that temperature is at 360 DEG C or more, and inorganic fused salt density is big, viscosity is big, flow velocity is slower, leads to temperature of molten salt control
System lag causes the temperature of alumina leaching workshop section to control difficulty larger, and inorganic fused salt solidifies next time at 142 DEG C, is easy
Cause valve, line clogging.
In consideration of it, this researcher combines the alumina tube digestion system structure used in the prior art, and to alumina
Mine is the improvement that raw material carries out alumina tube digestion processing system, so that carrying out heat exchange as heat carrier using fused salt
Tube digestion processing increases flowing velocity of the fused salt inside heat exchanger tube, enhancing heat exchange effect using fused salt self gravitation effect
Fruit provides new equipment for fused salt tube digestion heating alumina.
Utility model content
In order to solve the above technical problems existing in the prior art, the invention provides a kind of production of aluminum hydroxide oxygen
Change aluminium and dissolves out workshop section's fused salt circulating heater.
It is achieved particular by following technical scheme:
Production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater, including pulp tank, through setting in ore pulp
The slurry outlet on pulp tank and ore pulp import is arranged in heat exchanger tube in slot；Heat exchange tube inlet end is provided with fused salt slot, heat exchange
Pipe outlet end is provided with fused salt outlet；Fused salt outlet is connected to by pump inlet pipe with the entrance of pump；The outlet of pump by pump-out pipe with
The connection of fused salt slot；Liquid supplementation pipe is provided on fused salt slot；Having heaters is set on fused salt slot and/or fused salt outlet.By fused salt
Liquid supplementation pipe setting on slot, can not only effectively control viscosity, the concentration of fused salt, and can carry out in time in digestion series
High-temperature molten salt is supplemented, system temperature is adjusted, reaches control fused salt circulating-heating tube digestion aluminium oxide purpose, and passes through heating
The setting of device position can effectively control the temperature before and after fused salt heat exchanging, and it is molten to improve fused salt heat exchanging tube digestion aluminium oxide
Efficiency out.
It is preferred that the angle α in the heat exchanger tube and pulp tank horizontal direction is 10-45 °.By exchange heat pipe in ore pulp
Angle control in slot, so that entering fused salt flowing velocity in heat exchanger tube by under self gravitation effect, constantly by import
It holds to outlet end and slides, avoid stopping fouling in heat exchanger tube, the defect for causing the heat exchanger tube coefficient of heat transfer quickly to reduce, raising is changed
Thermal effect.
It is preferred that the angle α in the heat exchanger tube and pulp tank horizontal direction is 25 °.It, can by the setting of the angle
Effectively to enter fused salt and ore pulp heat exchange efficiency in heat exchanger tube and reach 95% or more, high degree improves heat exchange effect
Rate.
It is preferred that the pulp tank is internally provided with backing plate, and through slot is formed between backing plate and pipe wall of heat exchange pipe, backing plate
In be provided with communicating pipe, communicating pipe is for being connected to through slot and ore pulp import, slurry outlet.Avoid ore pulp a large amount of heaps in pulp tank
Product, improving the ore pulp entered in pulp tank can be according to the sequence for entering pulp tank, and passes through after heat exchange, is constantly discharged, mentions
High heat transfer effect improves digesting efficiency of alumina.
It is preferred that one end face of backing plate is inclined surface.Ore pulp cumulant in pulp tank is reduced to greatest extent, improves heat exchange
The ore pulp of completion quickly excludes pulp tank；Meanwhile by the setting of inclined surface, so that being formed between inclined surface and heat exchanger tube logical
Slot improves the contact area between ore pulp and pipe wall of heat exchange pipe, improves heat exchange efficiency.
It is preferred that on angle < heat exchanger tube and pulp tank horizontal direction in the inclined surface and pulp tank horizontal direction
Angle.Improve ore pulp heat exchange efficiency in pulp tank.
It is preferred that the backing plate is prepared for heat preservation, corrosion-resistant plate.Avoid heat of the heat exchange ore pulp before pulp tank is discharged
Amount loss is larger, causes tube digestion efficiency lower.
Slurry outlet position on pulp tank is more slightly higher than ore pulp entrance location, helps to improve between ore pulp and heat exchanger tube
Time of contact improves heat exchange efficiency.
The agitation that ore pulp can be stirred from ore pulp entrance location to slurry outlet position is provided in pulp tank
Equipment facilitates ore pulp and is discharged from the ore pulp import of low level to high-order slurry outlet.
During the work time, ore pulp is sent into pulp tank by ore pulp import, so that constantly accumulated in pulp tank,
And the flow velocity that ore pulp import flows into ore pulp is controlled, so that gradually accumulation filling is full in pulp tank for ore pulp, the invention is being ground
During studying carefully, such as the ore pulp inflow speed control of ore pulp import is filled into full pulp tank in 10min and then speed will be flowed into
After degree is reduced to 1/10th times, at the uniform velocity input, and ore pulp is gradually discharged from slurry outlet, into pipeline digestion series
In dissolved out；And ore pulp by ore pulp import enter pulp tank while, fused salt slot is opened so that heating fused salt into
Enter into heat exchanger tube, in fused salt slot under pressure effect, is constantly moved in heat exchanger tube, and then to the fused salt at heat transfer tube outlet end
Outlet port discharge, and by heating or without heating after, be pumped into fused salt slot by pump circulation, and in fused salt slot,
By temperature satisfactory fused salt discharge application, and by temperature still higher fused salt by liquid supplementation pipe fluid infusion adjustment concentration it
Afterwards, by heat treatment, secondary cycle heat exchange is carried out into heat exchanger tube, realizes fused salt cycle heat exchange.
It is heeling condition by setting heat exchanger tube, so that shape forms an angle (α), so that fused salt is in heat exchanger tube through itself
Gravity, continuous slide downward avoid fused salt viscosity, concentration are higher from causing mobility poor, cause temperature uppity
Defect is significantly improved, and heat exchanger tube heat exchange efficiency is improved.
The invention structure is simple, easy to operate, especially by heat exchanger tube to be obliquely installed, is being exchanged heat using fused salt
Self gravity in pipe realizes quickly flowing, reduces the difficulty that the control of the heat exchangings temperature such as viscosity, concentration influences, improves heat exchange
Efficiency.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
1- slurry outlet 2- backing plate 3- through slot 4- heat exchanger tube 5- fused salt slot 6- pump-out pipe 7- ore pulp import 8- pump
9- pumps inlet pipe 10- communicating pipe 11- pulp tank 12- fused salt and exports 13- heater.
Specific embodiment
It is limited below with reference to specific embodiment the technical solution of the invention is further, but requires to protect
The range of shield is not only limited to made description.
As shown in Figure 1, in certain embodiments, production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater,
Including pulp tank 11, through the heat exchanger tube 4 being arranged in pulp tank 11, slurry outlet 1 and ore pulp on pulp tank 11 are set
Import 7；4 arrival end of heat exchanger tube is provided with fused salt slot 5, and 4 outlet end of heat exchanger tube is provided with fused salt outlet 12；Fused salt outlet 12 is passed through
Pump inlet pipe 9 is connected to the entrance of pump 8；The outlet of pump 8 is connected to by pump-out pipe 6 with fused salt slot 5；Fluid infusion is provided on fused salt slot 5
Pipe；Having heaters 13 is set on fused salt slot 5 and/or fused salt outlet 12.
In certain embodiments, the angle α on the heat exchanger tube 4 and 11 horizontal direction of pulp tank is 10-45 °.
In certain embodiments, the angle α on the heat exchanger tube 4 and 11 horizontal direction of pulp tank is 25 °.
In certain embodiments, the pulp tank 11 is internally provided with backing plate 2, and backing plate 2 and 4 tube wall of heat exchanger tube it
Between form through slot 3, communicating pipe 10 is provided in backing plate 2, communicating pipe 10 is for being connected to through slot 3 and ore pulp import 7, slurry outlet 1.
In certain embodiments, 2 one end face of backing plate is inclined surface.
In certain embodiments, the angle < heat exchanger tube 4 and ore pulp on the inclined surface and 11 horizontal direction of pulp tank
Angle in 11 horizontal direction of slot.
In certain embodiments, the backing plate 2 is prepared for heat preservation, corrosion-resistant plate.
Unaccomplished matter is realized referring to the relevant technologies content in the prior art in the invention, and at this
Language described in innovation and creation about direction, is subject to the attached drawing page, and elaboration, example are distinguished on attached drawing
Such as: in horizontal direction, that is, being exactly on lateral direction of observation in the accompanying drawings.
Claims (7)
1. a kind of production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater, which is characterized in that including pulp tank
(11), through the heat exchanger tube (4) being arranged in pulp tank (11), the slurry outlet (1) and ore pulp being arranged on pulp tank (11)
Import (7)；Heat exchanger tube (4) arrival end is provided with fused salt slot (5), and heat exchanger tube (4) outlet end is provided with fused salt outlet (12)；Fused salt
Outlet (12) is connected to by pump inlet pipe (9) with the entrance for pumping (8)；The outlet for pumping (8) connects by pump-out pipe (6) and fused salt slot (5)
It is logical；Fused salt slot is provided with liquid supplementation pipe on (5)；Having heaters (13) are set on fused salt slot (5) and/or fused salt outlet (12).
2. production of aluminum hydroxide alumina leaching as described in claim 1 workshop section fused salt circulating heater, which is characterized in that
Angle α on the heat exchanger tube (4) and pulp tank (11) horizontal direction is 10-45 °.
3. production of aluminum hydroxide alumina leaching as claimed in claim 1 or 2 workshop section fused salt circulating heater, feature exist
In the angle α on the heat exchanger tube (4) and pulp tank (11) horizontal direction is 25 °.
4. production of aluminum hydroxide alumina leaching as described in claim 1 workshop section fused salt circulating heater, which is characterized in that
The pulp tank (11) is internally provided with backing plate (2), and forms through slot (3) between backing plate (2) and heat exchanger tube (4) tube wall,
It is provided in backing plate (2) communicating pipe (10), communicating pipe (10) is for being connected to through slot (3) and ore pulp import (7), slurry outlet (1).
5. production of aluminum hydroxide alumina leaching as claimed in claim 4 workshop section fused salt circulating heater, which is characterized in that
(2) one end face of backing plate is inclined surface.
6. production of aluminum hydroxide alumina leaching as claimed in claim 5 workshop section fused salt circulating heater, which is characterized in that
Angle < heat exchanger tube (4) on the inclined surface and pulp tank (11) horizontal direction and the folder in pulp tank (11) horizontal direction
Angle.
7. production of aluminum hydroxide alumina leaching as claimed in claim 4 workshop section fused salt circulating heater, which is characterized in that
The backing plate (2) is prepared for heat preservation, corrosion-resistant plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174905.7U CN209456087U (en) | 2018-12-24 | 2018-12-24 | A kind of production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174905.7U CN209456087U (en) | 2018-12-24 | 2018-12-24 | A kind of production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209456087U true CN209456087U (en) | 2019-10-01 |
Family
ID=68041976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822174905.7U Active CN209456087U (en) | 2018-12-24 | 2018-12-24 | A kind of production of aluminum hydroxide alumina leaching workshop section fused salt circulating heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209456087U (en) |
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2018
- 2018-12-24 CN CN201822174905.7U patent/CN209456087U/en active Active
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