CN1392118A - Method and device for smelting silicon carbide - Google Patents
Method and device for smelting silicon carbide Download PDFInfo
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- CN1392118A CN1392118A CN 02122377 CN02122377A CN1392118A CN 1392118 A CN1392118 A CN 1392118A CN 02122377 CN02122377 CN 02122377 CN 02122377 A CN02122377 A CN 02122377A CN 1392118 A CN1392118 A CN 1392118A
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- furnace
- silica sand
- smelting
- silicon carbide
- reaction
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- 238000003723 Smelting Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 22
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 168
- 239000000463 material Substances 0.000 claims abstract description 122
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 60
- 239000004576 sand Substances 0.000 claims abstract description 48
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002210 silicon-based material Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 45
- 239000012774 insulation material Substances 0.000 claims description 44
- 239000002245 particle Substances 0.000 claims description 26
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000007873 sieving Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 238000012958 reprocessing Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract description 4
- 239000000376 reactant Substances 0.000 abstract 5
- 125000006850 spacer group Chemical group 0.000 description 16
- 238000012856 packing Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000006662 Lansium Nutrition 0.000 description 3
- 241001156382 Lansium Species 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229960001866 silicon dioxide Drugs 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000003738 black carbon Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- Silicon Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention uses silicon carbide as smelting furnace, carbon material and silicon material as reactant material. The mixed reactant material is loaded around the furnace core and the furnace core consists of graphite powder. The temperature maintaining material incldues inner layer material of exhaust material and partial reactant material and outer layer of granulated silica sand with the silica material in the reactant being granulated silica roasted in the previous smelting. The said smelting method can increase the ventilation of temperature maintaining material and roast the silica material as reactant material to raise yield of blast furnace.
Description
Technical field
The present invention relates to a kind of smelting process of silicon carbide, particularly a kind of novel method with the roasting material silicon carbide smelting.
Background technology
Mainly also adopt Acheson's method in the existing silicon carbide production, promptly around the stove heart of resistance furnace, pack into by carbonaceous material and thin silica sand material, blended material by a certain percentage, the energising heating makes it produce chemical reaction, generates silicon carbide.Substantially have two kinds on the shove charge method, a kind of is virgin material method (virgin material of compositions such as silica sand and carbonaceous material is contained in the furnace bottom of smelting furnace, carries out roasting when smelting, the reaction zone of next heat of after coming out of the stove these " roasting materials " being packed into).Though this method can be removed the fugitive constituent of carbonaceous material in the compound, water water cooling and the process of coming out of the stove in just have the loss of a certain amount of carbonaceous material, also infiltrated a certain amount of impurity simultaneously, quality product is reduced, the material consumption increases.China ZL96118927.4 disclosed " producing the method for silicon carbide with resistance furnace " is that insulation material is only adopted silica sand one component, silica sand used in the reaction material was for to use twice at least as insulation material, and the corresponding at least twice pure silicon sand insulation material that cools and handle of doing of water.Though this method than the insulation material good permeability that is mixed with the black carbon material some, still, be difficult to carry out aborning, its shortcoming be pure silicon sand insulation material when coming out of the stove can and unreacted reaction material mix naturally.Because the required degree of a degree of " pure silicon sand insulation material " and reaction material is identical, so unreacted carbonaceous material can't be separated, when making " pure silicon sand insulation material " and carbonaceous material proportioning misalignment as next heat reaction material.
The objective of the invention is to overcome the deficiency of above-mentioned technology, a kind of ventilation property that can strengthen lagging material is provided, can make silica material required in the reaction material be able to roasting again, and can improve the silicon carbide smelting novel method of furnace output.
Summary of the invention
The present invention realizes by following technique means:
A kind of method of silicon carbide smelting, its smelting furnace is a resistance furnace, reaction material is carbonaceous material and earth silicon material, reaction material is contained in around the stove heart after mixing, the stove heart is made up of Graphite Powder 99. the smelting furnace insulation material branch internal layer that weary material and partial reaction material are formed of serving as reasons, with the skin that particle silica sand material is formed, the silica material in the reaction material is through the hard burned particle silica sand of last heat material.
A kind of device of silicon carbide smelting, furnace wall are the double-deck furnace walls that has the CO gas combustion chamber, and furnace bottom is the trapezoidal furnace bottom that has the CO gas combustion chamber.
The present invention has following advantage:
1. adopt the macrobead silica sand as insulation material, make the thermal insulation layer ventilation property better, reduced the air pressure in the stove, improved the speed of response in the stove, therefore reduced melting electric consumption.
2. because insulation material has adopted inside and outside two layers of different insulation material, in smelting, the impurity in the reaction material is arranged in a row in the internal layer insulation material, after smelting end, in the process of coming out of the stove, cleaned out, avoid impurity occurring in the outer particulate material and add up, prevented the secondary pollution of reaction material.
3. because insulation material has adopted macrobead silica sand material, the carbonaceous material of sneaking in the insulation material after smelting is come out of the stove is separated it through screening, the internal layer insulation material that again these is had " weary material " next heat of packing into of carbonaceous material and thin silica sand material, because the macrobead silica sand promptly becomes purer silica sand material after screening, so thin silica sand material and carbonaceous material after the reprocessing fragmentation are accomplished accurate proportioning.
4. because the effect of internal layer insulation material can prevent outer particle silica sand material near the high-temperature zone, and be melted that the bulk of congealing into causes spillage of material after the blowing out cooling.
5. because the enhancing of insulation material ventilation property, being incubated the bed of material aborning can thicken, and makes furnace wall away from the high-temperature zone, avoids furnace wall Yin Gaowen and is out of shape or burns out.
Description of drawings
In conjunction with the accompanying drawings, by embodiment the present invention is made a more detailed description.
Resistance furnace inner section synoptic diagram when Fig. 1 produces silicon carbide smelting for the present invention.
Fig. 2 is a spacer plate box structural representation of the present invention.
Embodiment one:
As shown in Figure 1, the device of this silicon carbide smelting, smelting furnace are resistance furnace, and furnace wall is the double-deck furnace wall 5 that has CO gas combustion chamber 6, and furnace bottom is the trapezoidal furnace bottom 8 that has CO gas combustion chamber 7.
The granularity of packing in trapezoidal furnace bottom 8 is the particle silica sand material of 6-30mm, and charge level is in the arc-shaped, adorns one deck " weary material " on arc, and is also in the arc-shaped, constitutes internal layer insulation material 3.With the reaction material 2 of packing in the arc, it is smooth to make it charge level again, and reaction material 2 is reprocessed after sieving for particle silica sand material and is broken into the thin silica sand material that granularity is 0-4mm.Install furnace wall 5, lifted spacer plate box, with Graphite Powder 99 furnace core body 1 position of packing into, reaction material 2 is packed in the space of spacer plate box inboard, and " weary material " is contained in the outer space of spacer plate box.Particle silica sand material is contained in the space between furnace wall and the spacer plate box, constitutes outer insulation material 4.The weight ratio of internal layer insulation material 3 and outer insulation material 4 is 1/7, and silica weight required in the weight of the particle silica sand material in its mesectoderm insulation material and the reaction material 2 is basic identical.Above-mentioned reaction material 2 is carbonaceous material and earth silicon material, and wherein the silica material in the reaction material is through the hard burned particle silica sand of last heat material.
After finishing above-mentioned operation, spacer plate box is proposed.Again reaction material is contained in the furnace charge middle and upper part, reaches pre-determined quantity, with granularity be again the particle silica sand material of 6-30mm be contained in reaction material above, reach pre-determined quantity.The energising heating is smelted to reacting and is finished substantially; Have a power failure; Question response stops; Lay down furnace wall 5 after the cooling; Insulation material is watered water for cooling; Finish the operation of coming out of the stove; Is the impurity on the insulation material internal layer that " Calusena lansium " disposed, and " weary material " sieved, and screen underflow is the internal layer insulation material of next heat, and screen overflow processing is broken into the thin silica sand material of 0-4mm, as the silicon-dioxide material in next heat reaction material.
Embodiment two:
As shown in Figure 1, the device of this silicon carbide smelting, smelting furnace are resistance furnace, and furnace wall is the double-deck furnace wall 5 that has CO gas combustion chamber 6, and furnace bottom is the trapezoidal furnace bottom 8 that has CO gas combustion chamber 7.
The granularity of packing in trapezoidal furnace bottom 8 is the particle silica sand material of 20-80mm, and charge level is in the arc-shaped, adorns one deck " weary material " on arc, and is also in the arc-shaped, constitutes internal layer insulation material 3.With the reaction material 2 of packing in the arc, it is smooth to make it charge level again, and reaction material 2 is reprocessed after sieving for particle silica sand material and is broken into the thin silica sand material that granularity is 1-6mm.Install furnace wall 5, lifted spacer plate box, with Graphite Powder 99 furnace core body 1 position of packing into, reaction material 2 is packed in the space of spacer plate box inboard, and " weary material " is contained in the outer space of spacer plate box.Particle silica sand material is contained in the space between furnace wall and the spacer plate box, constitutes outer insulation material 4.The weight ratio of internal layer insulation material 3 and outer insulation material 4 is 1/4, and silica weight required in the weight of the particle silica sand material in its mesectoderm insulation material and the reaction material 2 is basic identical.Above-mentioned reaction material 2 is carbonaceous material and earth silicon material, and wherein the silica material in the reaction material is through the hard burned particle silica sand of last heat material.
After finishing above-mentioned operation, spacer plate box is proposed.Again reaction material is contained in the furnace charge middle and upper part, reaches pre-determined quantity, with granularity be again the particle silica sand material of 20-80mm be contained in reaction material above, reach pre-determined quantity.The energising heating is smelted to reacting and is finished substantially; Have a power failure; Question response stops; Lay down furnace wall 5 after the cooling; Insulation material is watered water for cooling; Finish the operation of coming out of the stove; Is the impurity on the insulation material internal layer that " Calusena lansium " disposed, and " weary material " sieved, and screen underflow is the internal layer insulation material of next heat, and screen overflow processing is broken into the thin silica sand material of 1-6mm, as the silicon-dioxide material in next heat reaction material.
Embodiment three:
As shown in Figure 1, the device of this silicon carbide smelting, smelting furnace are resistance furnace, and furnace wall is the double-deck furnace wall 5 that has CO gas combustion chamber 6, and furnace bottom is the trapezoidal furnace bottom 8 that has CO gas combustion chamber 7.
The granularity of packing in trapezoidal furnace bottom 8 is the particle silica sand material of 50-100mm, and charge level is in the arc-shaped, adorns one deck " weary material " on arc, and is also in the arc-shaped, constitutes internal layer insulation material 3.With the reaction material 2 of packing in the arc, it is smooth to make it charge level again, and reaction material 2 is reprocessed after sieving for particle silica sand material and is broken into the thin silica sand material that granularity is 3-8mm.Install furnace wall 5, lifted spacer plate box, with Graphite Powder 99 furnace core body 1 position of packing into, reaction material 2 is packed in the space of spacer plate box inboard, and " weary material " is contained in the outer space of spacer plate box.Particle silica sand material is contained in the space between furnace wall and the spacer plate box, constitutes outer insulation material 4.The weight ratio of internal layer insulation material 3 and outer insulation material 4 is 1/2, and silica weight required in the weight of the particle silica sand material in its mesectoderm insulation material and the reaction material 2 is basic identical.Above-mentioned reaction material 2 is carbonaceous material and earth silicon material, and wherein the silica material in the reaction material is through the hard burned particle silica sand of last heat material.
After finishing above-mentioned operation, spacer plate box is proposed.Again reaction material is contained in the furnace charge middle and upper part, reaches pre-determined quantity, with granularity be again the particle silica sand material of 50-100mm be contained in reaction material above, reach pre-determined quantity.The energising heating is smelted to reacting and is finished substantially; Have a power failure; Question response stops; Lay down furnace wall 5 after the cooling; Insulation material is watered water for cooling; Finish the operation of coming out of the stove; Is the impurity on the insulation material internal layer that " Calusena lansium " disposed, and " weary material " sieved, and screen underflow is the internal layer insulation material of next heat, and screen overflow processing is broken into the thin silica sand material of 3-8mm, as the silicon-dioxide material in next heat reaction material.
Claims (6)
1. the method for a silicon carbide smelting, its smelting furnace is a resistance furnace, reaction material is carbonaceous material and earth silicon material, reaction material is contained in around the stove heart after mixing, the stove heart is made up of Graphite Powder 99, the skin that internal layer that it is characterized in that serving as reasons smelting furnace insulation material branch weary material and partial reaction material form and particle silica sand material are formed, the silica material in the reaction material is the hard burned particle silica sand of the last heat of a process material.
2. the method for silicon carbide smelting as claimed in claim 1 is characterized in that particle silica sand material granularity is between 6-100mm.
3. the method for silicon carbide smelting as claimed in claim 1 or 2 is characterized in that hard burned particle silica sand material is that reprocessing is broken into the thin silica sand material that granularity is 1-8mm after sieving.
4. the method for silicon carbide smelting as claimed in claim 1, the weight ratio that it is characterized in that described internal layer and outer insulation material is between 1/7-1/2.
5. the method for silicon carbide smelting as claimed in claim 1 is characterized in that particle silica sand material in the described outer insulation material, and silica weight required in weight and the reaction material is basic identical.
6. the device of a silicon carbide smelting is characterized in that furnace wall is the double-deck furnace wall that has the CO gas combustion chamber, and furnace bottom is the trapezoidal furnace bottom that has the CO gas combustion chamber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02122377 CN1392118A (en) | 2002-06-11 | 2002-06-11 | Method and device for smelting silicon carbide |
| CN 03120398 CN1225404C (en) | 2002-06-11 | 2003-03-18 | Method and apparatus for smeltering silica carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02122377 CN1392118A (en) | 2002-06-11 | 2002-06-11 | Method and device for smelting silicon carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1392118A true CN1392118A (en) | 2003-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02122377 Pending CN1392118A (en) | 2002-06-11 | 2002-06-11 | Method and device for smelting silicon carbide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117963925A (en) * | 2024-01-18 | 2024-05-03 | 宁夏天净隆鼎碳化硅有限公司 | A method for preparing silicon carbide using silicon carbide smelting waste |
-
2002
- 2002-06-11 CN CN 02122377 patent/CN1392118A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117963925A (en) * | 2024-01-18 | 2024-05-03 | 宁夏天净隆鼎碳化硅有限公司 | A method for preparing silicon carbide using silicon carbide smelting waste |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |