CN101113494A - Reducing agent for smelting magnesium by thermal reduction process - Google Patents
Reducing agent for smelting magnesium by thermal reduction process Download PDFInfo
- Publication number
- CN101113494A CN101113494A CNA2006102007392A CN200610200739A CN101113494A CN 101113494 A CN101113494 A CN 101113494A CN A2006102007392 A CNA2006102007392 A CN A2006102007392A CN 200610200739 A CN200610200739 A CN 200610200739A CN 101113494 A CN101113494 A CN 101113494A
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- reductive agent
- ferro
- reducing
- smelting magnesium
- silicon
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Abstract
The invention discloses a reducing agent used for smelting magnesium by a thermal reduction method. Ferro-silicon alloy and aluminium silicon alloy or ferro-silicon alloy and aluminium are prepared into the reducing agent according to a certain ratio. Then the agent is compounded with calcined dolomite and fluorite to obtain a reducing material which is then put into a reducing furnace to do reduction reaction according to the general technology requirements. The invention used for smelting magnesium by the thermal reduction method, the reducing time can be shortened 1 to 2 hours, the reducing rate can be improved by 5 percent to 10 percent, the reducing temperature can be reduced to 100 DEG C and the service life of a reduction jar can be prolonged. After the reduction reaction, the obtained waste slag has activity, which can be used as construction material as a substitute for cement, thus facilitating the reclamation utilization of the waste slag, the pollution to environment and the cost for the waste slag treatment for the enterprises are both reduced.
Description
Technical field
The present invention relates to a kind of reductive agent, the reductive agent that particularly a kind of smelting magnesium by thermal reduction process is used.
Background technology
In the smelting magnesium by thermal reduction process process, generally use ferrosilicon to make reductive agent at present, independent use sial is also arranged as reductive agent.When reduction reaction, the reduction temperature in the reduction furnace (jar) generally between 1150～1250 ℃, when reducing as reductive agent with ferrosilicon or sial, not only the reduction temperature height, the recovery time is long, reduction ratio is low, and work-ing life of influence reduction jar.The waste residue that produces after the reduction is sent to residual storage and stacks usually as waste disposal in addition, meets wind and is easy to produce airborne dust, serious environment pollution.
Summary of the invention
The new reductive agent that provides smelting magnesium by thermal reduction process to use is provided.Use reductive agent of the present invention, not only can reduce reduction temperature, prolong the work-ing life of reduction jar, and can reduce the recovery time, improve reduction ratio.The waste residue that produces after reduction has certain activity, can place of cement as material of construction, reduced the pollution of environment and the cost of processing waste residue.
Technical scheme of the present invention: the reductive agent that smelting magnesium by thermal reduction process is used is characterized in that: this reductive agent is formulated with the silumin of 30～70% ferro-silicon and 70～30%.
In the reductive agent that above-mentioned smelting magnesium by thermal reduction process is used, silumin be meant silicone content be not less than 30% and aluminium content be not less than 5% silumin.
In the reductive agent that aforementioned smelting magnesium by thermal reduction process is used, ferro-silicon be meant silicone content be not less than 70% and iron level be not more than 30% ferro-silicon.
The another kind of reductive agent that smelting magnesium by thermal reduction process is used is characterized in that: this reductive agent is formulated with the metallic aluminium of 80～95% ferro-silicon and 5～20%.
In the another kind of reductive agent that above-mentioned smelting magnesium by thermal reduction process is used, this reductive agent is formulated with the metallic aluminium of 90～93% ferro-silicon and 7～10%.
In the another kind of reductive agent that aforesaid smelting magnesium by thermal reduction process is used, ferro-silicon be meant silicone content be not less than 70% and iron level be not more than 30% ferro-silicon.
What compared with prior art, the invention provides is the new reductive agent that smelting magnesium by thermal reduction process is used.Adopt reductive agent refining magnesium of the present invention, obtained extraordinary technique effect.Can shorten 1～2 hour recovery time effectively, reduction ratio can improve 5～10%, and reduction temperature can reduce by 100 ℃, has prolonged the work-ing life of reduction furnace (jar); And the waste residue that produces after the reduction reaction has certain activity, can place of cement as material of construction, be beneficial to waste residue recycling, reduced the pollution of environment and the cost of business processes waste residue.
Embodiment
Present smelting magnesium by thermal reduction process technology is such: become to forge rhombspar calcination in rotary kiln white, white to forge as raw material, with ferrosilicon or sial as reductive agent, fluorite is as catalyzer, and in proportion through Microcomputerized dosing, mixer mill is made powdery, be pressed into spherical material, put into reduction furnace and carry out reduction reaction, the magnesium steam of generation gets the MAGNESIUM METAL finished product after condensing.Existing technology reductive agent is to use ferrosilicon or sial separately.Improvement of the present invention is to use ferrosilicon and sial to mix as reductive agent, or use ferrosilicon and metallic aluminium to mix as reductive agent.Processing requirement is mixed with other raw material to grind and is formed the reduction material routinely again, puts into reduction furnace and carries out reduction reaction.
Embodiment 1: use 50% ferro-silicon and 50% silumin to mix as reductive agent, processing requirement is mixed with other raw material and is ground formation and reduce material routinely again, puts into reduction furnace and carries out reduction reaction.Wherein: the silicone content in the ferro-silicon be 75% and iron level be 25%, can select the 75# ferrosilicon of CNS for use; Silicone content in the silumin be 85% and aluminium content be 15%.
Embodiment 2: use 50% ferro-silicon and 50% silumin to mix as reductive agent, processing requirement is mixed with other raw material and is ground formation and reduce material routinely again, puts into reduction furnace and carries out reduction reaction.Wherein: the silicone content in the ferro-silicon be 78% and iron level be 22%; Silicone content in the silumin be 80% and aluminium content be 20%.
Embodiment 3: use 90% ferro-silicon and 10% metallic aluminium to mix as reductive agent, processing requirement is mixed with other raw material and is ground formation and reduce material routinely again, puts into reduction furnace and carries out reduction reaction.Wherein: the silicone content in the ferro-silicon be 75% and iron level be 25%, can select the 75# ferrosilicon of CNS for use.
Claims (6)
1. the reductive agent used of smelting magnesium by thermal reduction process is characterized in that: this reductive agent is formulated with the silumin of 30～70% ferro-silicon and 70～30%.
2. the reductive agent that smelting magnesium by thermal reduction process according to claim 1 is used is characterized in that: silumin be meant silicone content be not less than 30% and aluminium content be not less than 5% silumin.
3. the reductive agent that smelting magnesium by thermal reduction process according to claim 1 and 2 is used is characterized in that: ferro-silicon be meant silicone content be not less than 70% and iron level be not more than 30% ferro-silicon.
4. the reductive agent used of smelting magnesium by thermal reduction process is characterized in that: this reductive agent is formulated with the metallic aluminium of 80～95% ferro-silicon and 5～20%.
5. the reductive agent that refining magnesium according to claim 4 is used is characterized in that: this reductive agent is formulated with the metallic aluminium of 90～93% ferro-silicon and 7～10%.
6. the reductive agent of using according to claim 4 or 5 described refining magnesium is characterized in that: ferro-silicon be meant silicone content be not less than 70% and iron level be not more than 30% ferro-silicon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006102007392A CN101113494A (en) | 2006-07-25 | 2006-07-25 | Reducing agent for smelting magnesium by thermal reduction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006102007392A CN101113494A (en) | 2006-07-25 | 2006-07-25 | Reducing agent for smelting magnesium by thermal reduction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101113494A true CN101113494A (en) | 2008-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006102007392A Pending CN101113494A (en) | 2006-07-25 | 2006-07-25 | Reducing agent for smelting magnesium by thermal reduction process |
Country Status (1)
| Country | Link |
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| CN (1) | CN101113494A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602833A (en) * | 2013-11-15 | 2014-02-26 | 吴永 | Improved pidgeon-process magnesium refining process |
| CN106191467A (en) * | 2016-07-12 | 2016-12-07 | 吉林市润成膜科技有限公司 | A kind of method that former Smelting magnesium prepares porous silicon simultaneously |
| CN107090547A (en) * | 2017-05-17 | 2017-08-25 | 西安建筑科技大学 | It is a kind of to reduce the method that magnesium process prepares AL-Si-Fe alloy and reduces magnesium in Pidgeon process |
| CN113957269A (en) * | 2021-03-27 | 2022-01-21 | 西安弗尔绿创矿业科技有限责任公司 | Can stabilize beta-C in magnesium slag2S magnesium smelting pellet and magnesium smelting method |
-
2006
- 2006-07-25 CN CNA2006102007392A patent/CN101113494A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602833A (en) * | 2013-11-15 | 2014-02-26 | 吴永 | Improved pidgeon-process magnesium refining process |
| CN106191467A (en) * | 2016-07-12 | 2016-12-07 | 吉林市润成膜科技有限公司 | A kind of method that former Smelting magnesium prepares porous silicon simultaneously |
| CN107090547A (en) * | 2017-05-17 | 2017-08-25 | 西安建筑科技大学 | It is a kind of to reduce the method that magnesium process prepares AL-Si-Fe alloy and reduces magnesium in Pidgeon process |
| CN113957269A (en) * | 2021-03-27 | 2022-01-21 | 西安弗尔绿创矿业科技有限责任公司 | Can stabilize beta-C in magnesium slag2S magnesium smelting pellet and magnesium smelting method |
| CN113957269B (en) * | 2021-03-27 | 2023-12-12 | 西安弗尔绿创矿业科技有限责任公司 | Can stabilize beta-C in magnesium slag 2 S magnesium smelting pellet and magnesium smelting method |
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Open date: 20080130 |