A kind of method for preparing metal aluminum by carbothermal reduction
A metal aluminum and carbothermal technology, which is applied in the field of carbon thermal reduction to prepare metal aluminum, can solve the problems of difficult separation and restriction, achieve high direct yield, avoid oxidation, and improve the effect of direct yield and purity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0049] Mix alumina powder (with a particle size below 50 mesh) and coke powder (with a particle size below 50 mesh) at a mass ratio of 7:3, and add water whose mass is 1 / 8 of the total mass of alumina powder and carbon powder , mixed evenly, and compacted under a pressure of 5MPa;
[0050] Put the compact into the graphite crucible, close the vacuum furnace, and the lower side of the vacuum furnace is connected with the collection bin through the pipeline; draw the vacuum and start heating when the pressure in the furnace is 5Pa, and heat the material to 800°C at a heating rate of 5°C / min , and then pass in argon, combined with the control of the vacuum pump, the pressure in the furnace is controlled at about 100Pa, the flow rate of argon is 2L / min, the inlet of nitrogen is about 15cm above the material, and then the same The heating rate is to heat the material from 800°C to 1650°C and keep it warm for 60 minutes so that under the action of argon gas flow, the gaseous aluminu...
Embodiment 2
[0054] Mix aluminum oxide (with a particle size of 50-150 mesh) and petroleum coke powder (with a particle size below 50 mesh) at a mass ratio of 7:4, and add 1 / 9 of the total mass of alumina powder and carbon powder Water, mixed evenly, compacted under a pressure of 6MPa;
[0055] Put the compact into the graphite crucible, close the vacuum furnace, and the lower side of the vacuum furnace is connected with the collection bin through a pipeline; draw the vacuum and start heating when the pressure in the furnace is 7Pa, and heat the material to 800°C at a heating rate of 10°C / min Then pass in argon to control the pressure in the furnace at about 300Pa, the flow rate of argon is 4L / min, the inlet of nitrogen is about 14cm above the material, and then the material will be heated from 800°C to 1600°C and heat preservation for 100 minutes so that under the action of nitrogen gas flow, gaseous aluminum is enriched in the collection bin to obtain liquid metal aluminum.
[0056] The...
Embodiment 3
[0059] Mix alumina powder (with a particle size below 50 mesh) and coke powder (with a particle size below 50 mesh) at a mass ratio of 7:5, and add 1 / 10 of the total mass of alumina powder and carbon powder Water, mixed evenly, compacted under a pressure of 7MPa;
[0060] Put the compact into the graphite crucible, close the vacuum furnace, the lower side of the vacuum furnace is connected with the collection bin through the pipeline, draw the vacuum and start heating when the pressure in the furnace is 10Pa, and heat the material at a heating rate of 10°C / min to 800°C Then pass in argon to control the pressure in the furnace at about 500Pa, the flow rate of argon is 5.2L / min, the inlet of nitrogen is about 16cm above the material, and then the material will be heated from 800°C at the same heating rate To 1550°C and keep it warm for 180 minutes so that under the action of argon gas flow, gaseous aluminum is enriched in the collection bin to obtain liquid metal aluminum.
[0...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size (mesh) | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More