CN209741237U - Magnesium and magnesium alloy flux waste residue recycling equipment - Google Patents
Magnesium and magnesium alloy flux waste residue recycling equipment Download PDFInfo
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- CN209741237U CN209741237U CN201920457652.6U CN201920457652U CN209741237U CN 209741237 U CN209741237 U CN 209741237U CN 201920457652 U CN201920457652 U CN 201920457652U CN 209741237 U CN209741237 U CN 209741237U
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- magnesium
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- chloride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model discloses a recycling device for magnesium and magnesium alloy flux waste residue, which comprises an intermediate material cup (1), a separator (2), a material collector (4) and a magnesium/chloride collector (5); the intermediate material cup, the upper part of the separator and the material collector are positioned in a heating furnace (20), and a regenerator burner (12) and a plurality of temperature probes (7) are distributed on the heating furnace; the middle material cup (1) is connected with the separator (2) through a material conveying pipe (18), and the material conveying pipe (18) extends into the bottom in the middle material cup (1); the device is characterized in that a first-level discharging turnover plate (17) is arranged below an outlet of the material conveying pipe in the separator (2), a magnesium oxide/calcium fluoride powder spiral discharging machine (15) is arranged at the bottom of the separator (2), and the outlet of the magnesium oxide/calcium fluoride powder spiral discharging machine (15) is used as an outlet (14) of magnesium oxide/calcium fluoride powder. The utility model discloses fine practical application and spreading value have.
Description
Technical Field
The utility model belongs to the equipment that metal magnesium production technology promoted specifically is a magnesium refining and magnesium alloy production flux waste residue cyclic recovery utilizes equipment.
Background
The Pidgeon process utilizes a flux method containing potassium chloride, magnesium chloride, sodium chloride and barium chloride to refine crude magnesium obtained by a reduction method or an electrolysis method to obtain magnesium or magnesium alloy which can be directly processed; the flux is mixed with a plurality of impurities in the refining and magnesium alloy processing processes, and a plurality of magnesium oxides, nitrides and carbides are converted, so that the flux loses the original function and needs to be replaced by a new flux, and the failed flux is discarded or discharged. The discarded or discharged solid contains 35-40% of chloride, 2-3% of simple substance magnesium metal particles, about 50-55% of magnesium oxide, 2-3% of calcium fluoride and the like. In addition, during the process of melting the rare earth magnesium alloy, a part of flux slag containing rare earth element oxides is discharged.
Chlorides, magnesium oxide, calcium fluoride and rare earth oxides in these slags are all important resources. But the chloride in the water is very soluble in water, and pollutes underground water without being treated after being discharged, and the content of the chloride in the water is too high, so that the human drinks the water to cause great harm to a blood circulation system and brain tissues; the magnesium oxide in the slag generates alkaline magnesium hydroxide when meeting water, so that the water quality and the farmland are strongly alkalized easily, and the normal agricultural production is influenced. In view of the above, the waste flux slag generated during the processing of magnesium and magnesium alloys must be treated with high attention. The utility model solves the problem by the principles of scientific treatment, environmental protection, energy conservation and harm turning into good.
Disclosure of Invention
The utility model aims to utilize the difference of the boiling point of chloride in the slag and the boiling point of magnesium oxide and calcium fluoride, take the phenomenon that the difference of the boiling point is large under the conditions of high temperature and vacuum, separate, and respectively extract and recycle. The key point of recycling is to design a device capable of achieving the purpose.
The utility model discloses an adopt following technical scheme to realize:
a recycling device for magnesium and magnesium alloy flux waste residue comprises an intermediate material cup, a separator, a material collector and a magnesium/chloride collector.
the middle material cup, the upper part of the separator and the material collector are positioned in a heating furnace built by refractory bricks, and a regenerator burner and a plurality of temperature probes are distributed on the heating furnace.
The middle material cup is connected with the separator through a material conveying pipe, and the material conveying pipe extends into the bottom in the middle material cup; a primary discharging turnover plate is arranged below an outlet of the material conveying pipe in the separator, a magnesium oxide/calcium fluoride powder spiral discharging machine is arranged at the bottom of the separator, and the outlet of the magnesium oxide/calcium fluoride powder spiral discharging machine is used as a magnesium oxide/calcium fluoride powder outlet; the top of the separator is communicated with the upper part of the material collector through a separator/material collector connecting pipe, and a vacuum connecting pipe is arranged at the top of the material collector; the magnesium/chloride liquid seal pipe is connected to the collector bottom, magnesium/chloride liquid seal union coupling is arranged the material pipe, arrange the material pipe and arrange material to magnesium/chloride collector after wearing out the heating furnace, magnesium discharging pipe is installed on magnesium/chloride collector upper portion, the magnesium discharging pipe is arranged material to the magnesium receiving tank, magnesium/chloride collector bottom is equipped with the flux outlet pipe, the flux outlet pipe is arranged material to the flux receiving tank.
When in work, as shown in figure 2, after the magnesium and magnesium alloy flux slag to be treated is heated and melted, the slag is added into an intermediate charging cup by a pump, in the heating process of burning fuel such as coal gas and the like, magnesium and magnesium alloy flux slag is continuously heated to about 800-900 ℃, and then is added into a separator of magnesium, chloride, magnesium oxide and calcium fluoride by a pump, in the separator, under the vacuum condition of less than or equal to 2Pa, the low boiling point substances of magnesium and chloride in the slag melt are gasified, enter the separator/collector connecting pipe from the upper part of the separator, are cooled to 500-600 ℃ to become liquid, enter the collector, the magnesium oxide and calcium fluoride which can not be gasified in the separator fall into the middle part of the separator to the discharging turnover plate of the magnesium oxide and calcium fluoride, the lower part of the separator falls under the action of gravity and is discharged out of the machine by a spiral discharging machine, and the deep processing of the magnesium oxide and the calcium fluoride is carried out. Magnesium and chloride entering the material collector are liquefied due to the cooling of the outer wall of the upper part of the material collector, flow to the lower part of the material collector due to the action of gravity, enter the snake-shaped liquid seal and enter the magnesium and chloride collector, liquid magnesium is discharged from the magnesium discharge pipe and enters the magnesium receiving tank due to the fact that the density of the magnesium is smaller than that of a mixture, chloride with large density is discharged from the flux outlet pipe and enters the flux receiving tank, and the chloride is added into a magnesium refining or alloy melting pot again for recycling.
The utility model relates to a rationally, fine practical application and spreading value have.
Drawings
Fig. 1 shows a schematic structural diagram of the present invention.
FIG. 2 shows a flow chart of recycling of magnesium and magnesium alloy flux slag.
In the figure: 1-intermediate material cup, 2- (magnesium, chloride, magnesium oxide and calcium fluoride) separator, 3-separator/collector connecting pipe, 4-collector, 5-magnesium/chloride collector, 6-vacuum connecting pipe, 7-temperature measuring probe, 8-magnesium discharging pipe, 9-magnesium receiving tank, 10-flux outlet pipe, 11-flux receiving tank, 12-regenerative burner, 13-magnesium/chloride liquid seal pipe, 14-magnesium oxide/calcium fluoride powder outlet, 15-magnesium oxide/calcium fluoride powder spiral discharging machine, 16- (magnesium oxide/calcium fluoride powder) secondary discharging turnover plate, 17- (magnesium oxide/calcium fluoride powder) primary discharging turnover plate, 18-material conveying pipe, 19-discharging pipe and 20-heating furnace.
Detailed Description
The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.
Since magnesium obtained by Pidgeon process and electrolytic process is crude magnesium, it is necessary to purify magnesium or melt magnesium alloy from mixed chlorides such as potassium chloride, sodium chloride, magnesium chloride, barium chloride, etc. Impurities are increased and lose efficacy in the melting process, the lost flux slag is discharged at will, chloride which is easy to dissolve in water is discharged at will to cause pollution easily, and cardiovascular and cerebral diseases are easily induced by drinking the water. The magnesium and the chloride contained in the flux slag have different boiling points with the magnesium oxide and the calcium fluoride with high boiling points, the magnesium and the chloride are distilled under the conditions of heating and vacuum and are reused for magnesium refining and magnesium alloy melting, the magnesium oxide and the calcium fluoride which are not easy to be distilled are discharged from a separator by a spiral discharging machine and are used for preparing magnesium compounds and recycling the calcium fluoride, and the recycled calcium fluoride is reused for magnesium reduction or cement production. The specific equipment is as follows.
A recycling device for magnesium and magnesium alloy flux waste slag is shown in figure 1 and comprises an intermediate material cup 1, a separator 2, a material collector 4 and a magnesium/chloride collector 5.
The intermediate material cup 1, the upper part of the separator 2 and the material collector 4 are positioned in a heating furnace 20 built by refractory bricks, and a regenerator burner 12 and a plurality of temperature probes 7 are distributed on the heating furnace 20.
The intermediate material cup 1 is connected with the separator 2 through a material conveying pipe 18, and the material conveying pipe 18 extends into the bottom in the intermediate material cup 1; the one-level ejection of compact of being located material conveying pipe 18 export below installation turns over board 17 in separator 2, and the second grade ejection of compact that 2 upper portions of separator are located the one-level ejection of compact and turn over board 17 below installation second grade ejection of compact and turn over board 16, and the one-level ejection of compact turns over board 17 and second grade ejection of compact and turns over board 16 and by motor control drive stirring, perhaps, adopts the automatic stirring of gravity drive, if adopt motor drive, then survey to certain weight back through gravity sensor, the system control motor drive stirring. The bottom of the separator 2 is provided with a magnesium oxide/calcium fluoride powder spiral discharging machine 15, and the outlet of the magnesium oxide/calcium fluoride powder spiral discharging machine 15 is used as a magnesium oxide/calcium fluoride powder outlet 14; the top of the separator 2 is communicated with the upper part of the material collector 4 through a separator/material collector connecting pipe 3, and the top of the material collector 4 is provided with a vacuum connecting pipe 6; the bottom of the collector 4 is connected with a magnesium/chloride liquid seal pipe 13, the magnesium/chloride liquid seal pipe 13 is connected with a discharge pipe 19, the discharge pipe 19 penetrates out of a heating furnace 20 and then discharges materials to a magnesium/chloride collector 5, the upper part of the magnesium/chloride collector 5 is provided with a magnesium discharge pipe 8, the magnesium discharge pipe 8 discharges materials to a magnesium receiving tank 9, the bottom of the magnesium/chloride collector 5 is provided with a flux outlet pipe 10, and the flux outlet pipe 10 discharges materials to a flux receiving tank 11.
The method comprises the following specific steps:
1. Heating and melting magnesium and magnesium alloy flux slag to be treated, adding the molten magnesium and magnesium alloy flux slag into an intermediate material cup 1 by using a pump, heating the magnesium and magnesium alloy flux slag to about 800-900 ℃ in the heating process of burning fuel such as coal gas and the like, and adding a separator 2 of magnesium, chloride, magnesium oxide and calcium fluoride by using the pump.
2. In the separator 2, under the vacuum condition of less than or equal to 2Pa, low-boiling-point substances of magnesium and chloride in the slag melt are gasified, the low-boiling-point substances enter the separator/collector connecting pipe 3 from the upper part of the separator 2 and are cooled to 500-600 ℃ to become liquid, the liquid enters the collector 4, magnesium oxide and calcium fluoride which cannot be gasified in the separator 2 fall into the middle part of the separator 2 to a first-stage discharging turning plate 17 of the magnesium oxide and the calcium fluoride, the discharging turning plate is used for automatically turning materials under the action of gravity to a second-stage discharging turning plate 16, and after the materials are turned again under the action of gravity, the lower part of the separator 2 is discharged out of the machine by a spiral discharging machine 15 to carry out deep processing on the magnesium oxide and the calcium fluoride.
3. Magnesium and chloride entering the collector 4 are liquefied due to the cooling of the outer wall of the upper part of the collector 4, flow to the lower part of the collector 4 due to the gravity action, enter a snake-shaped liquid seal and enter a magnesium and chloride collector 5, liquid magnesium is discharged from a magnesium discharge pipe 8 and enters a magnesium receiving groove 9 due to the fact that the density of the magnesium is smaller than that of a mixture, chloride with high density is discharged from a flux outlet pipe 10 and enters a flux receiving groove 12, and the chloride is added into a magnesium refining or alloy melting pot again for recycling.
4. During heating of the flux slag, clean fuel such as coal gas or natural gas is added into the furnace, the furnace is heated in an energy-saving heat accumulating type heating furnace built by high-quality refractory bricks with the Al2O3 content of more than 75 percent, the building thickness of the heating furnace is 230mm, the outer shell of the furnace is insulated by a 60mm aluminum silicate fiber felt, and a layer is wrapped outside the furnace by neutral glass fiber cloth.
5. The heating furnace is provided with 12 nickel-chromium-nickel-silicon thermocouples for temperature measurement, and the detected data is concentrated on a computer for centralized control observation.
6. The conical upper part of the separator 2 and the snake-shaped liquid seal pipe are all made of 2516 heat-resistant stainless steel. After the installation, the pressure test is carried out for 8 hours by adopting 0.6MPa, and the leakage pressure is reduced to be less than 0.05MPa, thus the product is qualified.
7. The equipment size is determined according to the magnesium and flux slag treatment capacity.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a magnesium and magnesium alloy flux waste residue cyclic recovery utilizes equipment which characterized in that: comprises an intermediate material cup (1), a separator (2), a material collector (4) and a magnesium/chloride collector (5);
The intermediate material cup (1), the upper part of the separator (2) and the material collector (4) are positioned in a heating furnace (20) built by refractory bricks, and a regenerator burner (12) and a plurality of temperature probes (7) are distributed on the heating furnace (20);
The middle material cup (1) is connected with the separator (2) through a material conveying pipe (18), and the material conveying pipe (18) extends into the bottom in the middle material cup (1); a primary discharging turning plate (17) is arranged below an outlet of the material conveying pipe (18) in the separator (2), a magnesium oxide/calcium fluoride powder spiral discharging machine (15) is arranged at the bottom of the separator (2), and the outlet of the magnesium oxide/calcium fluoride powder spiral discharging machine (15) is used as a magnesium oxide/calcium fluoride powder outlet (14); the top of the separator (2) is communicated with the upper part of the material collector (4) through a separator/material collector connecting pipe (3), and a vacuum connecting pipe (6) is installed at the top of the material collector (4); magnesium/chloride liquid seal pipe (13) is connected to loading head (4) bottom, magnesium/chloride liquid seal pipe (13) are connected and are arranged material pipe (19), arrange material pipe (19) and wear out behind heating furnace (20) and arrange material to magnesium/chloride collector (5), magnesium/chloride collector (5) upper portion installation magnesium discharging pipe (8), magnesium discharging pipe (8) are arranged material to magnesium receiving tank (9), magnesium/chloride collector (5) bottom is equipped with flux outlet pipe (10), flux outlet pipe (10) are arranged material to flux receiving tank (11).
2. The recycling apparatus of magnesium and magnesium alloy flux waste residue according to claim 1, characterized in that: and a secondary discharging turning plate (16) is arranged below the primary discharging turning plate (17) at the upper part of the separator (2).
3. The magnesium and magnesium alloy flux waste residue recycling apparatus according to claim 2, characterized in that: the primary discharging turning plate (17) and the secondary discharging turning plate (16) are driven by a motor to turn materials, or gravity is adopted to drive the turning materials.
4. The recycling apparatus of magnesium and magnesium alloy flux waste residue according to claim 1, characterized in that: the masonry thickness of the heating furnace (20) is 230mm, the heat preservation is carried out outside the furnace by using an aluminum silicate fiber felt with the thickness of 60mm, and then the neutral glass fiber cloth is used for wrapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920457652.6U CN209741237U (en) | 2019-04-08 | 2019-04-08 | Magnesium and magnesium alloy flux waste residue recycling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920457652.6U CN209741237U (en) | 2019-04-08 | 2019-04-08 | Magnesium and magnesium alloy flux waste residue recycling equipment |
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| Publication Number | Publication Date |
|---|---|
| CN209741237U true CN209741237U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920457652.6U Expired - Fee Related CN209741237U (en) | 2019-04-08 | 2019-04-08 | Magnesium and magnesium alloy flux waste residue recycling equipment |
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| CN (1) | CN209741237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113604680A (en) * | 2021-08-06 | 2021-11-05 | 山西中城天朗环保工程有限公司 | Magnesium alloy flux slag recovery equipment and recovery process thereof |
-
2019
- 2019-04-08 CN CN201920457652.6U patent/CN209741237U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113604680A (en) * | 2021-08-06 | 2021-11-05 | 山西中城天朗环保工程有限公司 | Magnesium alloy flux slag recovery equipment and recovery process thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 Termination date: 20210408 |