CN1840505A - Smelting method for low-ferro fused magnesia - Google Patents
Smelting method for low-ferro fused magnesia Download PDFInfo
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- CN1840505A CN1840505A CN 200510063956 CN200510063956A CN1840505A CN 1840505 A CN1840505 A CN 1840505A CN 200510063956 CN200510063956 CN 200510063956 CN 200510063956 A CN200510063956 A CN 200510063956A CN 1840505 A CN1840505 A CN 1840505A
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- China
- Prior art keywords
- rare earth
- magnesium alloy
- ferro
- low
- fused magnesia
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Abstract
The invention relates to a magnesite containing MgO higher than 46.5%, Fe2O3 lower than 0.15%. The preparing process consists of charging rare earth ytterbium-tantalum-magnesium alloy and rare earth samarium-cerium-magnesium alloy, smelting and proceeding layered distributing.
Description
The method of present known smelting electric melting magnesia is, with giobertite MgO content is being raw material more than 46.5%, adopt three electric furnace electric smelting methods to smelt, it is smelted the electrosmelted magnesite clinker that and is the common electrical fused magnesia, people select the calcic height again for use, siliceous low giobertite is smelted the electrosmelted magnesite clinker of high calcium and low silicone, aforesaid method is smelted the electrosmelted magnesite clinker that, widespread usage is aspect refractory materials, according to the world, the needs of domestic market, people smelt in the magnesia that above-mentioned, select the electrosmelted magnesite clinker of some iron-holder below 0.4-0.5%, be used for the household electrical appliance aspect.The present invention is for fear of the deficiency of above-mentioned smelting process; A kind of smelting process of low-ferro fused magnesia is provided.Thereby produce iron-holder at the electrosmelted magnesite clinker below 0.2%.
The present invention smelts low-ferro fused magnesia, with giobertite MgO content more than 46.5%, Fe
2O
3Content is raw material at the ore below 0.15%, adds magnesium-rare earth and smelt in smelting process.
Described magnesium-rare earth is rare earth ytterbium tantalum magnesium alloy and rare earth samarium cerium-magnesium alloy.
It is example that the present invention adds additive with electrosmelted magnesite clinker per ton, its smelting process is described, layer-by-layer distribution during smelting; The rare earth ytterbium tantalum magnesium alloy of 100-2500g and the rare earth samarium cerium-magnesium alloy of 100-2000g are mixed the composition additive.Earlier the giobertite raw material pushed down naked light in smelting process during cloth, on the surface of material, spilt diffusing additive then.And then the thick material of cloth 15-25 centimetre again.Deng material fusing, after naked light spray again cloth, to spill diffusing additive, each fabric thickness again on new reinforced surface be the 30-40 centimetre, the layer-by-layer distribution that goes round and begins again like this, layering adding additive is till the smelting of this stove finishes.
Table 1 is smelted low-ferro fused magnesia quality product synopsis
Table 2 is smelted low-ferro fused magnesia energy consumption synopsis
Table 3 is smelted the low-ferro fused magnesia ore and is consumed synopsis
Be embodiments of the invention below
Embodiment 1
Get the giobertite of granularity 0.5-6 centimetre, content of magnesia is 46.6%, iron oxide content is 0.131%, with 800g rare earth ytterbium tantalum magnesium alloy and 550g rare earth samarium cerium-magnesium alloy mix back layering in smelting process spill in the stove that looses smelt, its smelt the electrosmelted magnesite clinker ferric oxide that be below 0.15% account for 35%, accounting for 35%, account for 30% below 0.3% below 0.2%.
Embodiment 2
The giobertite MgO content of getting granularity 0.5-6 centimetre is 47.01%, ferric oxide is 0.128%, mixing back layering in smelting with 700g rare earth ytterbium tantalum magnesium alloy and 900g rare earth samarium cerium-magnesium alloy spills to be dispersed in the stove and smelts, it is smelted the electrosmelted magnesite clinker that, iron-holder and is accounting for 6% below 0.1%, account for 30% below 0.15%, account for 38% below 0.2%, remaining iron-holder is all below 0.3%.The every index synopsis of electrosmelted magnesite clinker 1-table 3 with prior art production.
Smelt low-ferro fused magnesia quality product synopsis
Table 1
| Analytical results | |||||||
| Igloss | SiO 2 | Fe 2O 3 | Ai 2O 3 | CaO | MgO | Remarks | |
| Prior art | 0.20 | 0.56 | 0.41 | 0.13 | 1.10 | 96.60 | |
| 0.16 | 0.60 | 0.44 | 0.12 | 1.18 | 97.50 | ||
| The present invention | 0.14 | 0.58 | 0.138 | 0.09 | 1.09 | 97.962 | |
| 0.12 | 0.61 | 0.10 | 0.09 | 0.97 | 98.11 | ||
| 0.14 | 0.64 | 0.28 | 0.10 | 1.01 | 97.83 | ||
Smelt low-ferro fused magnesia energy consumption synopsis
Table 2
| Sequence number | Technology category | Tap to tap time (hour) | Power consumption (degree) | Remarks |
| 1 | Prior art | 10——12 | 3100——3300 | |
| 2 | The present invention | 9——11 | 2900——3100 |
Smelt the low-ferro fused magnesia ore and consume synopsis
Table 3
| Sequence number | Technology category | Ore consumes (kilogram) | Electrosmelted magnesite clinker finished product (kilogram) | Remarks |
| 1 | Prior art | 3200——3400 | 1000 | |
| 2 | The present invention | 2800——3000 | 1000 |
Claims (2)
1, a kind of smelting process of low-ferro fused magnesia is at 46.5% above Fe with MgO content
2O
3Content is raw material at the giobertite below 0.15%, it is characterized in that in smelting process electrosmelted magnesite clinker per ton adds the rare earth samarium cerium-magnesium alloy of the rare earth ytterbium tantalum magnesium alloy of 100-2500g and 100-2000g as additive.
2, it is characterized in that 100-2500g rare earth ytterbium tantalum magnesium alloy and 100-2000g rare earth samarium cerium-magnesium alloy are mixed according to the described additive of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510063956 CN1840505A (en) | 2005-03-29 | 2005-03-29 | Smelting method for low-ferro fused magnesia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510063956 CN1840505A (en) | 2005-03-29 | 2005-03-29 | Smelting method for low-ferro fused magnesia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1840505A true CN1840505A (en) | 2006-10-04 |
Family
ID=37029737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510063956 Withdrawn CN1840505A (en) | 2005-03-29 | 2005-03-29 | Smelting method for low-ferro fused magnesia |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1840505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010485A (en) * | 2022-05-06 | 2022-09-06 | 山西格盟中美清洁能源研发中心有限公司 | Refractory material for melting furnace and preparation method thereof |
-
2005
- 2005-03-29 CN CN 200510063956 patent/CN1840505A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010485A (en) * | 2022-05-06 | 2022-09-06 | 山西格盟中美清洁能源研发中心有限公司 | Refractory material for melting furnace and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |