CN1078451A - Utilize ferro-alloy cinder to produce the method for fire resistive material product - Google Patents
Utilize ferro-alloy cinder to produce the method for fire resistive material product Download PDFInfo
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- CN1078451A CN1078451A CN 93111138 CN93111138A CN1078451A CN 1078451 A CN1078451 A CN 1078451A CN 93111138 CN93111138 CN 93111138 CN 93111138 A CN93111138 A CN 93111138A CN 1078451 A CN1078451 A CN 1078451A
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- CN
- China
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- resistive material
- material product
- fire resistive
- mould
- slag
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Abstract
A kind of method of utilizing ferro-alloy cinder to produce fire resistive material product, it is the melting slag in the reactor during with ferroalloy smelting, when being not less than 1850 ℃, directly be poured in the mould, after waiting then to solidify, send into and heat-treat 70 hours to 300 hours in the holding furnace, temperature is not higher than 200 ℃ when coming out of the stove.For further improving product properties, can add MgO, SiO
2Or carbonate, make aluminum-spinel, picrochromite or mullite, or make the porous refractory goods.This method is simple and easy to do, and the production efficiency height is fully used ferro-alloy cinder.
Description
The present invention relates to a kind of method of producing fire resistive material product, particularly utilize thermite process to produce the method that ferro-alloy cinder is produced fire resistive material product.
At present, thermite process is produced the slag that iron alloy produced, and mainly is the residual waste that thermite process reducing metal Cr, Ti, V etc. carry over, and wherein composition mainly is Al
2O
3, account for more than 70%, the iron alloy different according to melting, remainder mainly is Cr in its slag
2O
3Or TiO
2, or V
2O
5Deng.These slags are generally just discarded useless, also are that it is chilledly had a slag irregularly shaped, that globule size differs even utilize, be broken into the certain specification granularity after, use as refractory materials or abrasive material.As when utilizing the chromium metal slag to make refractory brick,, adding phosphoric acid, paper pulp etc. as binding agent through after the fragmentation, compression moulding is also carried out sintering.This kind method is owing to Al in the slag
2O
3The content height to the serious wear of machine, is easily brought detrimental impurity into simultaneously when broken in the course of processing, influence quality product, and while cost height, efficient are low.In addition, existing electric casting brick method is that refractory materials is carried out proportioning by certain composition, is poured into die for molding again after adopting electric arc furnace that it is melt into liquid state then.Though all better with fused cast brick density and intensity that this kind technology is produced, because melting process has consumed a large amount of electric energy, production cost is also very high in producing.
Purpose of the present invention, be to provide a kind of slag that utilizes thermite process to produce iron alloy, make it under molten state, produce the method for fire resistive material product, and slag must do not cooled off, solidify, broken or fusing again, thereby make the production fire resistive material product more direct, more convenient, and improve the performance of goods.
Realize purpose of the present invention, the melting slag when promptly producing fire resistive material product technology and be ferroalloy smelting is poured in advance in the mould with definite shape of manufacturing on request, after naturally cooling solidifies, heat-treats then.In addition,, melting slag is poured in the forming mould, added the calcite of additive 5%～30% simultaneously, i.e. the quartz of MgO, or 5%-18%, i.e. SiO in order to improve the performance of fire resistive material product
2Thereby, make and generate aluminum-spinel, picrochromite or mullite in the melting slag; Or the carbonate of adding 1%-10%, as MgCo
3, CaCO
3, BaCO
3Or SrCO
3Deng, thereby make the porous fire resistive material product.Its principle is:
When adding MgO or SiO
2The time, chemical equation is:
When adding carbonate, chemical equation is:
The CO that generated this moment
2Gas produces pore in fire resistive material product.
The slag temperature that melting slag is poured into when containing in slag device or the mould from reactor is controlled between 1850 ℃-2400 ℃.After slag in the mould solidified, the temperature naturally cooling was reduced to 1300 ℃-1800 ℃, and send into it in holding furnace and be incubated 70 hours to 300 hours this moment, and it is cooled to below 200 ℃ gradually.
The present invention has tangible advantage: owing to directly utilized slag fused, the depleted slag is reused, and production fire resistive material product technology is simple, a large amount of energy and auxiliary mechanical means (as masher etc.) have been saved, improved the performance of fire resistive material product, reduced the chance of mixing detrimental impurity, and production cost is lower, simple to operate.In addition by heat treatment process, eliminated noncrystal in the goods, thereby further improved the erosion resistance and the intensity thereof of fire resistive material product.
Example 1: the melting slag that iron alloy thermite process reducing metal chromium is produced, in the time of 1950 ℃-2300 ℃, from reactor with 1000Cm
3/ s-8000Cm
3The flow of/s is poured into die for molding, after waiting to solidify, when temperature is reduced to 1300 ℃-1800 ℃, send in the holding furnace 150 hours to 160 hours, make temperature reduce to 80 ℃-100 ℃ gradually, from holding furnace, take out then, naturally cool to normal temperature and promptly make fire resistive material product.
Example 2: the melting slag that iron alloy thermite process reducing metal chromium is produced, in the time of 2000 ℃-2300 ℃, from reactor with 1000Cm
3/ s-8000Cm
3The flow of/s is poured in the forming mould, add the MgO of 10%-15% simultaneously and stir, after waiting to solidify, when temperature is 1700 ℃-1800 ℃ it was sent into holding furnace 150 hours to 160 hours, make temperature reduce to 80 ℃-100 ℃ gradually, take out then and naturally cool to normal temperature, promptly can be made into the fire resistive material product that contains aluminum-spinel and picrochromite.
Example 3: the melting slag that iron alloy thermite process reducing metal chromium is produced in the time of 2200 ℃-2400 ℃, from reactor with 1000Cm
3/ s-8000Cm
3The flow of/s is poured in the forming mould, adds 5% MgCO simultaneously
3, and stir, after waiting to solidify, in the time of 1700 ℃-1800 ℃, it is sent in the holding furnace 150 hours to 160 hours, make temperature reduce to 80 ℃-100 ℃ gradually, take out and naturally cool to normal temperature then, promptly can be made into the porous refractory goods.
Claims (4)
1, a kind of method of utilizing ferro-alloy cinder to produce fire resistive material product, its processing method is the melting slag in the reactor during with ferroalloy smelting, be poured in advance on request in the mould with definite shape of manufacturing, then after naturally cooling solidifies, heat-treat, after heat treatment this kind of goods promptly can be used as fire resistive material product and use.
2, processing method according to claim 1 is poured melting slag in the forming mould process into, for improving the fire resistive material product performance, add additive, stir, moulding and through thermal treatment, said additive is to add the calcite MgO of 5%-30% or the quartzy SiO of 5%-18%
2Thereby, make and generate aluminum-spinel MgOAl in the slag
2O
3, picrochromite MgOCr
2O
3Or mullite 3Al
2O
32SiO
2; Or the carbonate of adding 1%-10%, thereby make the porous refractory goods.
3, processing method according to claim 1 and 2 is that the temperature that melting slag is poured into from reactor in the mould is controlled between 1850 ℃-2400 ℃.
4, processing method according to claim 1 and 2 is that the fire resistive material product after solidifying in the mould is sent in the holding furnace 1300 ℃-1800 ℃ the time, and soaking time is 70 hours to 300 hours, and making it be cooled to final holding temperature gradually is below 200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111138 CN1078451A (en) | 1993-05-18 | 1993-05-18 | Utilize ferro-alloy cinder to produce the method for fire resistive material product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93111138 CN1078451A (en) | 1993-05-18 | 1993-05-18 | Utilize ferro-alloy cinder to produce the method for fire resistive material product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1078451A true CN1078451A (en) | 1993-11-17 |
Family
ID=4988944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93111138 Pending CN1078451A (en) | 1993-05-18 | 1993-05-18 | Utilize ferro-alloy cinder to produce the method for fire resistive material product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1078451A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870562A (en) * | 2010-06-30 | 2010-10-27 | 泰州枫叶冶金设备有限公司 | Precision casting waste sand reusing method |
| CN105418060A (en) * | 2016-01-07 | 2016-03-23 | 马鞍山市安工大工业技术研究院有限公司 | Method for preparing material with picotite through stainless steel slag |
-
1993
- 1993-05-18 CN CN 93111138 patent/CN1078451A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870562A (en) * | 2010-06-30 | 2010-10-27 | 泰州枫叶冶金设备有限公司 | Precision casting waste sand reusing method |
| CN101870562B (en) * | 2010-06-30 | 2012-05-02 | 泰州枫叶冶金设备有限公司 | Precision casting waste sand reusing method |
| CN105418060A (en) * | 2016-01-07 | 2016-03-23 | 马鞍山市安工大工业技术研究院有限公司 | Method for preparing material with picotite through stainless steel slag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |