CN204224267U - A kind of Pure Silicon Metal external refining oxygen blowing device - Google Patents
A kind of Pure Silicon Metal external refining oxygen blowing device Download PDFInfo
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- CN204224267U CN204224267U CN201420717022.5U CN201420717022U CN204224267U CN 204224267 U CN204224267 U CN 204224267U CN 201420717022 U CN201420717022 U CN 201420717022U CN 204224267 U CN204224267 U CN 204224267U
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Abstract
A kind of Pure Silicon Metal external refining oxygen blowing device, comprise refractory brick, refractory brick is round table-like, outside sidewall following in the middle part of it and bottom surface, heat-resisting steel bushing is installed, refractory brick is embedded in high temperature steel and puts, the base plate center of heat-resisting steel bushing is communicated with ventpipe, and the bottom of refractory brick is provided with the groove caved in, and forms oxygen surge chamber between the base plate of this groove and heat-resisting steel bushing; The slit pore of multiple up/down perforation is also evenly distributed with in refractory brick.The utility model solves the deficiency that Pure Silicon Metal tradition external refining oxygen blowing device exists, make the outer oxygen blast refining process of stove safer, stable, economical, and air tight, the non-leakage silicon liquid of refining process can be made, without dead angle, pollution-free, single oxygen blowing device long service life, change simple, refining effect is good, can effectively reduce Pure Silicon Metal comprehensive energy consumption, the development of China's Pure Silicon Metal industry is significant and higher practicality.
Description
Technical field
The utility model relates to a kind of Pure Silicon Metal external refining oxygen blowing device, is specially a kind ofly to carry out oxygen blast to remove the device of the metallic impurity such as aluminium, calcium, titanium in silicon liquid to the Pure Silicon Metal liquid under molten state.
Background technology
The laudatory title that Pure Silicon Metal has " magic metal ", be widely used in the industries such as chemical industry, metallurgy, electronics, its mode of production is smelted obtained with silica and carbonaceous reducing agent raw material in mineral hot furnace, other elements brought in stove with furnace charge are also reduced while reduction element silicon, and incorporate in silicon liquid, therefore from mineral hot furnace Pure Silicon Metal liquid out, there is the various metals impurity such as aluminium, calcium, titanium, the existence of these impurity has a strong impact on performance and the use of Pure Silicon Metal, therefore need to carry out stove external oxidation refining treatment, refining process directly affects the quality of Pure Silicon Metal.
The general way of Pure Silicon Metal external refining is " oxygen pressing contracting air bottom blowing refining method ", by passing into oxygen rich gas to Pure Silicon Metal liquid, makes the oxidized slagging of impurity to reduce the foreign matter contents such as aluminium, calcium, titanium.Traditional oxygen blowing device as shown in Figure 1-2, be made up of copper pipe or carbon tube by ventilating pit, is cast in refractory castable, and refractory materials is cast on the base that steel plate makes, and have gas buffer room in base, base bottom has a main ventpipe, for being connected to source of the gas.
There is following shortcoming in traditional oxygen blowing device:
1), air chamber up to 150mm, volume is large, and pressure is little, and the copper pipe of ventilation has 48 combinations, and single tube slightly reaches 6mm, and silicon liquid easily oozes in copper pipe, causes plugging;
2), copper pipe through iron plate, by being welded and fixed, sealing, but due to copper different with steel plate material, weld seam easily comes off, and causes commissure to leak gas bottom silicon bag, makes refining not reach effect;
3), after each oxygen blast completes, plugging 20 ~ 30mm, needs to destroy 30 ~ 200mm mould material, cuts the copper pipe of blocking and can carry out oxygen blast operation next time, waste time and energy, and also easily damages copper pipe and mould material is overall, forms " wearing bag " hidden danger;
4), Pure Silicon Metal is wasted, owing to all will destroy 20 ~ 30mm mould material at every turn, cause the dead angle forming 20 ~ 200mm bottom silicon bag gradually, this part silicon liquid can not oxygen blast refining, usually all with refining after white residue mix, 1 ~ 15kg Pure Silicon Metal is caused to waste, each oxygen blast direct economic loss 13 ~ 195 yuan;
5), work-ing life is short, and depreciation loss is high: use after 10 ~ 15 times, and when the mould material that 250mm is high is struck off also surplus 50mm, just need " oxygen blowing device " that more renew, single cost more than 800 yuan, each oxygen blast depreciation 53 ~ 80 yuan, causes production cost high;
6) when, more renewing " oxygen blowing device ", need by dismantle " cored ", again build bottom silicon bag be again welded with copper pipe, steel plate " oxygen blowing device ", then baking maintenance is carried out with charcoal or timber, usually just can come into operation after needing two weeks, therefore each Pure Silicon Metal factory need lay in a large amount of silicon bags, causes the serious wasting of resources.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Pure Silicon Metal external refining oxygen blowing device, to overcome the deficiency that conventional oxygen-blown device exists, make oxygen blast refining process safer, stable, economical, accomplish air tight, non-leakage silicon liquid, without dead angle, pollution-free, and reach long service life, change object that is simple, refining effect good, effective reduction Pure Silicon Metal comprehensive energy consumption.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of Pure Silicon Metal external refining oxygen blowing device, comprise refractory brick, refractory brick is round table-like, be provided with heat-resisting steel bushing outside sidewall following in the middle part of it and bottom surface, refractory brick is embedded in high temperature steel and puts, and the base plate center of heat-resisting steel bushing is communicated with ventpipe, the bottom of refractory brick is provided with the groove caved in, and forms oxygen surge chamber between the base plate of this groove and heat-resisting steel bushing; The slit pore of multiple up/down perforation is also evenly distributed with in refractory brick.
In preferred scheme, described refractory brick is the brick body adopting zircon corundum brick, chrome corundum brick or white fused alumina brick to make, but is not limited to above material.
In preferred scheme, described heat-resisting steel bushing is the steel bushing adopting high temperature steel, carbon steel or steel alloy to make, and the outer wall of its outer wall and refractory brick is on same level and smooth curved surface, but is not limited to above material.
Described refractory brick and heat-resisting steel bushing one-body molded.Refractory brick combines in a nesting relation with heat-resisting steel bushing, also can electric welding, argon arc welding or other mechanical system be adopted to fix the base plate of steel bushing.
Wide 0.1 ~ the 2mm of described slit pore, long 10 ~ 30mm.Described refractory brick forms through compression molding, high-temperature firing, can in refractory brick raw material mixed plant fiber, make it in sintering process, generate slit pore voluntarily, through whole brick body.
The height of described oxygen surge chamber is 20 ~ 100mm.
The utility model has the following advantages: 1, due to gap little (wide 0.1 ~ 2mm, long 10 ~ 30mm), be uniformly distributed in gas permeable brick surface, air tight in refining process, non-leakage silicon liquid, evenly, without dead angle, refining effect is good, does not waste silicon liquid in ventilation; 2, compare old oxygen pressure and need 8 ~ 12Mpa, new oxygen blowing device only needs 4 ~ 5 Mpa to get final product operation, can economize oxygen 30 ~ 40%; 3, long service life, depreciation loss is low, reaches more than 170 times work-ing life, and single cost is less than 3300 yuan, and each oxygen blast depreciation is no more than 20 yuan, saves production cost; 4, full sized brick forms through compression molding, high-temperature firing, batch production, structure is simple, it is convenient to change, time this gas permeable brick needs to change, only need unload the flange bottom silicon bag, rap and take off old gas permeable brick, building above new brick, flange with refractory mortar and fixedly hold bottom, can come into operation without the need to toasting maintenance; 5, adopt zircon corundum or chromium corundum to be raw material, thermal shock resistance is good, and resistance to fouling is strong, and refractoriness under load, all more than 1700 DEG C, far above the temperature of silicon liquid in silicon bag 1500 DEG C, therefore can effectively avoid refractory materials to the pollution of silicon liquid;
The utility model is a kind of Pure Silicon Metal external refining oxygen blowing device, he solves the deficiency that Pure Silicon Metal tradition external refining oxygen blowing device exists, make the outer oxygen blast refining process of stove safer, stable, economical, and air tight, the non-leakage silicon liquid of refining process can be made, without dead angle, pollution-free, single oxygen blowing device long service life, change simple, refining effect is good, can effectively reduce Pure Silicon Metal comprehensive energy consumption, the development of China's Pure Silicon Metal industry is significant and higher practicality.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the sectional view of oxygen blowing device traditional in background technology.
Fig. 2 is the vertical view of oxygen blowing device traditional in background technology.
Fig. 3 is the sectional view of utility model.
Fig. 4 is the vertical view of utility model.
Embodiment
As shown in Figure 3-4, the utility model comprises refractory brick 1, refractory brick 1 is round table-like, outside sidewall following in the middle part of it and bottom surface, heat-resisting steel bushing 2 is installed, refractory brick 1 is embedded on heat-resisting steel bushing 2, the base plate center of heat-resisting steel bushing 2 is communicated with ventpipe 3, and the bottom of refractory brick 1 is provided with the groove caved in, and forms oxygen surge chamber 4 between the base plate of this groove and heat-resisting steel bushing 2; The slit pore 5 of multiple up/down perforation is also evenly distributed with in refractory brick 1.
Described refractory brick 1 is the brick body adopting zircon corundum brick, chrome corundum brick or white fused alumina brick to make.
Described heat-resisting steel bushing 2 is the steel bushing adopting high temperature steel, carbon steel or steel alloy to make, and the outer wall of its outer wall and refractory brick 1 is on same level and smooth curved surface.
Described refractory brick 1 is one-body molded with heat-resisting steel bushing 2.
Wide 0.1 ~ the 2mm of described slit pore 5, long 10 ~ 30mm, slit even air hole distribution wherein, and quantity is comparatively large, can forming surface contact with silicon liquid.
The height of described oxygen surge chamber 4 is 20 ~ 100mm.
In advance by external air source and access ventpipe, open external air source breather valve, oxygen rich gas is assembled in oxygen surge chamber, after reaching certain pressure, namely by running through the slit pore uniformly penetrating of refractory brick body in Pure Silicon Metal silicon liquid, because principal element each in silicon liquid and the descending order of oxygen affinity are Ca, Al, Si, Fe, therefore the calcium in silicon liquid, aluminium impurity is by preferential oxidation, generate calcium oxide and aluminium sesquioxide and become slag and float on silicon liquid surface, during the complete casting of refining, slag is attached to silicon bag inwall (after cooling artificial removing), thus reach the object of refining removal of impurities.During use, treat that the silicon industry of refining is loaded on the top being placed in refractory brick in silicon bag, because in refractory brick, slit pore is uniformly distributed, oxygen fully can be contacted with silicon liquid by slit pore, and refining effect is good; And in traditional device, the contact of silicon liquid and oxygen is single point contact, contact uneven, refining effect is poor.
Claims (6)
1. a Pure Silicon Metal external refining oxygen blowing device, comprise refractory brick (1), it is characterized in that: refractory brick (1) is for round table-like, outside sidewall following in the middle part of it and bottom surface, heat-resisting steel bushing (2) is installed, refractory brick (1) is embedded on heat-resisting steel bushing (2), the base plate center of heat-resisting steel bushing (2) is communicated with ventpipe (3), and the bottom of refractory brick (1) is provided with the groove caved in, and forms oxygen surge chamber (4) between the base plate of this groove and heat-resisting steel bushing (2); The slit pore (5) of multiple up/down perforation is also evenly distributed with in refractory brick (1).
2. Pure Silicon Metal external refining oxygen blowing device according to claim 1, is characterized in that: described refractory brick (1) is the brick body adopting zircon corundum brick, chrome corundum brick or white fused alumina brick to make.
3. Pure Silicon Metal external refining oxygen blowing device according to claim 1, is characterized in that: described heat-resisting steel bushing (2) is the steel bushing adopting high temperature steel, carbon steel or steel alloy to make, and the outer wall of its outer wall and refractory brick (1) is on same level and smooth curved surface.
4. Pure Silicon Metal external refining oxygen blowing device according to claim 1, is characterized in that: described refractory brick (1) is one-body molded with heat-resisting steel bushing (2).
5. according to the Pure Silicon Metal external refining oxygen blowing device one of claim 1-4 Suo Shu, it is characterized in that: the wide 0.1 ~ 2mm of described slit pore (5), long 10 ~ 30mm.
6. according to the Pure Silicon Metal external refining oxygen blowing device one of claim 1-4 Suo Shu, it is characterized in that: the height of described oxygen surge chamber (4) is 20 ~ 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717022.5U CN204224267U (en) | 2014-11-26 | 2014-11-26 | A kind of Pure Silicon Metal external refining oxygen blowing device |
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| CN201420717022.5U CN204224267U (en) | 2014-11-26 | 2014-11-26 | A kind of Pure Silicon Metal external refining oxygen blowing device |
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| CN204224267U true CN204224267U (en) | 2015-03-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502406A (en) * | 2016-01-15 | 2016-04-20 | 成都府天高温材料科技有限公司 | Ventilating element suitable for smelting silicon metal |
| CN109082555A (en) * | 2018-07-13 | 2018-12-25 | 王玉环 | A kind of alloy, which refines, gives gas stick |
-
2014
- 2014-11-26 CN CN201420717022.5U patent/CN204224267U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502406A (en) * | 2016-01-15 | 2016-04-20 | 成都府天高温材料科技有限公司 | Ventilating element suitable for smelting silicon metal |
| CN109082555A (en) * | 2018-07-13 | 2018-12-25 | 王玉环 | A kind of alloy, which refines, gives gas stick |
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Date of cancellation: 20180129 Granted publication date: 20150325 |
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