System and method of induction heating liquid mixing continuous magnesium production
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A magnesium smelting and induction furnace technology, applied in the field of metallurgy, can solve the problems of many impurities, easy water absorption and deliquescence, and high labor intensity
Pending Publication Date: 2020-06-12
CHINA ENFI ENGINEERING CORPORATION +1
View PDF27 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0002] At present, the vast majority of domestic magnesium production still adopts the traditional Pidgeon process, which has at least the following disadvantages: (1) Most of the processes on the production site rely on manual operations, which is labor-intensive and has many potential safety hazards; (2) Magnesium smelting It is intermittent production, with long reduction cycle and low production efficiency; (3) The production process is fully open, with a lot of dust and exhaust gas on site, high noise, and serious environmental pollution; (4) Vacuum reduction tanks are expensive, have a short service period, and are used in large quantities (5) The reduction smelting adopts the external heating method, and the heat utilization efficiency is low; (6) The magnesium reduction reaction is a solid-solid reaction, the reaction rate is slow, and the raw material utilization rate is low; (7) The reduction smelting needs to be carried out under vacuum conditions, and the vacuum The system is complex and the energy consumption is high; (8) the reduced magnesium vapor is condensed into a solid state at the mouth of the tank, and there are many impurities, which need to be reheated, melted and purified, and the energy consumption is high
Since there is no heating device in the vacuum chamber, the reduction of magnesium and the evaporation of metal magnesium are both endo
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0087] The calcined dolomite is directly crushed into a particle size of 20-40mm, the 75 ferrosilicon alloy is crushed into a particle size of 5-25mm, and the flux fluorite is crushed into a block with a particle size of 10-30mm, which are respectively loaded into the silo.
[0088] Evacuate the induction furnace, airtight chamber and follow-up system to a vacuum of 1000Pa, turn off the vacuum system, open the argon gas charging system, and feed argon gas into the induction furnace and airtight chamber, and close it after the gas pressure in the induction furnace reaches the normal pressure of 0.1MPa. Argon system, turn on the vacuum system. Repeat this twice to fully discharge the residual air in the induction furnace, the airtight chamber and the subsequent system. Finally, continue to feed the argon flow into the furnace to maintain the gas pressure in the furnace at 0.1-0.12 MPa, and the pressure in the airtight chamber at 0.11-0.13 MPa.
[0089] During the exhausting pro...
Embodiment 2
[0094] The dolomite is directly broken into a particle size of 20-40mm, the 75 ferrosilicon alloy is broken into a particle size of 5-25mm, and the flux fluorite is broken into a block with a particle size of 10-30mm, which are respectively loaded into the silo.
[0095] Evacuate the induction furnace, airtight chamber and follow-up system to a vacuum of 800-1000Pa. Add ferrosilicon alloy into the induction furnace, turn on the electric heating, the temperature of the ferrosilicon alloy in the furnace gradually rises, and gradually melts into a liquid state after reaching 1500°C, forming a molten pool of reducing agent in the furnace, and the depth of the molten pool is about 40% of the depth of the furnace.
[0096] After the molten pool in the furnace is formed, lower the stirring paddle into the molten pool, open the valves of the dolomite and fluorite silos, weigh them according to the mass ratio of dolomite:fluorite 100:3, and send them to the feeder under the drive of the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a system and method of induction heating liquid mixing continuous magnesium production. The system comprises a silicon iron raw material bin, a magnesium ore raw material bin,a flux raw material bin, a feeding mechanism and a smelting mechanism. Each raw material bin is provided with an inert gas inlet and a vacuuming port. The smelting mechanism comprises an airtight chamber and an induction furnace. The induction furnace is arranged in the airtight chamber. A feeding pipeline and an exhaust gas pipeline are arranged on the top of the induction furnace. The feeding pipeline extends out of the airtight chamber and is connected with a screw conveyer. The exhaust gas pipeline extends out of the airtight chamber. A slag outlet and an iron outlet are arranged on the side on the induction furnace. The induction furnace is further provided with a stirring paddle. The airtight chamber is provided with an inert gas inlet on the side wall. The induction furnace is provided with an inert gas inlet on the side wall. The airtight chamber is provided with a vacuuming port on the top wall. The exhaust gas pipeline is provided with a vacuuming port. According to the system of induction heating liquid mixing continuous magnesium production, because the negative micro-pressure operation or normal-pressure operation is adopted, continuous feeding and discharging can be implemented, continuous production of the metal magnesium is implemented, and the production cost is reduced; and splashing can be effectively reduced, the quantity of soot is effectively reduced, thequality of original magnesium is improved, and the stable running state of equipment is improved.
Description
technical field [0001] The invention relates to the field of metallurgy, in particular, the invention relates to a system and a method for inductively heating liquid-state stirring continuous magnesium smelting. Background technique [0002] At present, the vast majority of domestic magnesium production still adopts the traditional Pidgeon process, which has at least the following disadvantages: (1) Most of the processes on the production site rely on manual operations, which is labor-intensive and has many potential safety hazards; (2) Magnesium smelting It is intermittent production, with long reduction cycle and low production efficiency; (3) The production process is fully open, with a lot of dust and exhaust gas on site, high noise, and serious environmental pollution; (4) Vacuum reduction tanks are expensive, have a short service period, and are used in large quantities (5) The reduction smelting adopts the external heating method, and the heat utilization efficiency i...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more