CN104743561A - Method for producing nano-scale white carbon black by using silica fume - Google Patents
Method for producing nano-scale white carbon black by using silica fume Download PDFInfo
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- CN104743561A CN104743561A CN201310746616.9A CN201310746616A CN104743561A CN 104743561 A CN104743561 A CN 104743561A CN 201310746616 A CN201310746616 A CN 201310746616A CN 104743561 A CN104743561 A CN 104743561A
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- silica fume
- white carbon
- carbon black
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention discloses a method for producing nano-scale white carbon black by using silica fume. The method comprises the following steps in order: A, collecting raw materials; B, calcinating in a heating furnace; C, removing carbon by using acid (alkali) washing; D, drying; E, obtaining finished product. The calcination temperature range is between 500-1200 DEG C. The heating furnace calcination time is 30-240 min. The heating furnace is a rotary kiln, a reverberator furnace, a pushed slab kiln, a continuous belted furnace and roasting furnace in other forms. According to the adoption of the method for producing nano-scale white carbon black by using silica fume, through high-temperature calcination, the color of the silica fume is changed, the impurity carbon is removed, other impurities are removed through acid (or alkali) washing process, the requirement of the white carbon block to chemical component and physical performance are achieved; the method is environmentally friendly and energy saving, low in production cost and simple in process.
Description
Technical field
The present invention relates to a kind of method that SILICA FUME produces nano level White Carbon black.
Background technology
SILICA FUME is the flue dust produced during industrial silicon and ferro-silicon are produced, and collects gained by relevant device; Its major ingredient is SiO
2, content is between 88%--96%.Separately there are a small amount of simple substance C, MgO, CaO, Al
2o
3, Fe
2o
3deng impurity.Spherical and the spherical aggregate of SILICA FUME gray, size range is about 0.04---0.3um.White Carbon black mainly wants composition to be SiO
2, content is about 98.00---99.999%, spheroidal particle, and its main production process has vapor phase process and the precipitator method.Particle diameter is between 10um ~ 0.07um.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming prior art, provide a kind of environmental protection and energy saving, production cost is low, and technique simply produces the method for nano level White Carbon black by SILICA FUME.
The method that a kind of SILICA FUME of the present invention produces nano level White Carbon black is achieved through the following technical solutions:
SILICA FUME produces a method for nano level White Carbon black, comprises the following steps successively:
A. material collection: the flue dust SILICA FUME produced in industrial silicon and ferro-silicon being produced is collected;
B. process furnace calcining: adopt direct heating calcining manners that grey SILICA FUME is burnt till pure white, carbon remaining after removing SILICA FUME calcining;
C. acid (alkali) eccysis is mixed: other impurity remaining after using acid (alkali) to remove SILICA FUME calcining;
D. dry: the SILICA FUME in step C is injected dryer, SILICA FUME dried, bake out temperature controls at 100-120 DEG C, measures the water ratio of a SILICA FUME in drying course every 10 minutes, until the water ratio of SILICA FUME reaches less than 0.5%, stop drying;
E. finished product is obtained: by the white carbon black class wrapping, the warehouse-in that obtain in step D.
As preferably, described calcination temperature range is between 500-1200 DEG C.
As preferably, described process furnace calcination time is at 30-240 minute.
As preferably, described process furnace is rotary kiln, reverberatory furnace, pushed bat kiln, continuous ribbon furnace and other form stoving ovens.
Compared with prior art, the beneficial effect that a kind of SILICA FUME of the present invention produces the method for nano level White Carbon black is: by high-temperature calcination method, changes the color of SILICA FUME, removes carbon impurity; Washed operation removed all the other impurity by acid (or alkali) again, reach the requirement of White Carbon black to chemical composition and physicals, environmental protection and energy saving, production cost is low, and technique is simple.
Embodiment
Provide preferred embodiment of the present invention below, to describe technical scheme of the present invention in detail.
Product quality indicator of the present invention
SiO
2：98.6％～99.99％
Al
2O
3：＜0.006％
CaO：＜0.007％
FeO：＜0.026％
MgO：＜0.004％
Granularity: 0.04-0.6um; Aggregation size < 5um, median size 0.1-0.3 μm.
Embodiment 1:
SILICA FUME produces a method for nano level White Carbon black, comprises the following steps successively:
A. material collection: the flue dust SILICA FUME produced in industrial silicon and ferro-silicon being produced is collected;
B. process furnace calcining: adopt direct heating calcining manners that grey SILICA FUME is burnt till pure white, carbon remaining after removing SILICA FUME calcining;
C. acid (alkali) eccysis is mixed: other impurity remaining after using acid (alkali) to remove SILICA FUME calcining;
D. dry: the SILICA FUME in step C is injected dryer, and SILICA FUME dried, bake out temperature controls at 100 DEG C, in drying course, measured the water ratio of a SILICA FUME every 10 minutes, until the water ratio of SILICA FUME reaches less than 0.5%, stop drying;
E. finished product is obtained: by the white carbon black class wrapping, the warehouse-in that obtain in step D.
Described calcination temperature range is between 600 DEG C, and process furnace calcination time was at 210 minutes.Described process furnace is rotary kiln, reverberatory furnace, pushed bat kiln, continuous ribbon furnace and other form stoving ovens.
Embodiment 2:
SILICA FUME produces a method for nano level White Carbon black, comprises the following steps successively:
A. material collection: the flue dust SILICA FUME produced in industrial silicon and ferro-silicon being produced is collected;
B. process furnace calcining: adopt direct heating calcining manners that grey SILICA FUME is burnt till pure white, carbon remaining after removing SILICA FUME calcining;
C. acid (alkali) eccysis is mixed: other impurity remaining after using acid (alkali) to remove SILICA FUME calcining;
D. dry: the SILICA FUME in step C is injected dryer, and SILICA FUME dried, bake out temperature controls at 110 DEG C, in drying course, measured the water ratio of a SILICA FUME every 10 minutes, until the water ratio of SILICA FUME reaches less than 0.5%, stop drying;
E. finished product is obtained: by the white carbon black class wrapping, the warehouse-in that obtain in step D.
Described calcination temperature range is between 1100 DEG C, and process furnace calcination time was at 60 minutes.Described process furnace is rotary kiln, reverberatory furnace, pushed bat kiln, continuous ribbon furnace and other form stoving ovens.
Above-described embodiment, just two examples of the present invention, be not for limiting enforcement of the present invention and interest field, all technical schemes identical or equivalent with content described in the claims in the present invention, all should be included in scope.
Claims (4)
1. produce a method for nano level White Carbon black by SILICA FUME, it is characterized in that: comprise the following steps successively:
A. material collection: the flue dust SILICA FUME produced in industrial silicon and ferro-silicon being produced is collected;
B. process furnace calcining: adopt direct heating calcining manners that grey SILICA FUME is burnt till pure white, carbon remaining after removing SILICA FUME calcining;
C. acid (alkali) eccysis is mixed: other impurity remaining after using acid (alkali) to remove SILICA FUME calcining;
D. dry: the SILICA FUME in step C is injected dryer, SILICA FUME dried, bake out temperature controls at 100-120 DEG C, measures the water ratio of a SILICA FUME in drying course every 10 minutes, until the water ratio of SILICA FUME reaches less than 0.5%, stop drying;
E. finished product is obtained: by the white carbon black class wrapping, the warehouse-in that obtain in step D.
2. a kind of SILICA FUME according to claim 1 produces the method for nano level White Carbon black, it is characterized in that: described calcination temperature range is between 500-1200 DEG C.
3. a kind of SILICA FUME according to claim 1 produces the method for nano level White Carbon black, it is characterized in that: described process furnace calcination time is at 30-240 minute.
4. a kind of SILICA FUME according to claim 1 produces the method for nano level White Carbon black, it is characterized in that: described process furnace is rotary kiln, reverberatory furnace, pushed bat kiln, continuous ribbon furnace and other form stoving ovens.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310746616.9A CN104743561A (en) | 2013-12-31 | 2013-12-31 | Method for producing nano-scale white carbon black by using silica fume |
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| CN201310746616.9A CN104743561A (en) | 2013-12-31 | 2013-12-31 | Method for producing nano-scale white carbon black by using silica fume |
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| CN104743561A true CN104743561A (en) | 2015-07-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298546A (en) * | 2018-01-02 | 2018-07-20 | 云南永昌硅业股份有限公司 | Prepare the method and its application of high-purity SILICA FUME |
| CN110203934A (en) * | 2018-07-16 | 2019-09-06 | 成亚资源科技股份有限公司 | The silica regeneration method of discarded package material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030003041A1 (en) * | 2000-02-10 | 2003-01-02 | Joshua Samuel | Process for the preparation of amorphous silica |
| CN101148332A (en) * | 2007-09-12 | 2008-03-26 | 长安大学 | Method for increasing content of silicon dioxide in silicon ash and producing white carbon black |
| CN102424392A (en) * | 2011-09-11 | 2012-04-25 | 中国科学院过程工程研究所 | Method for preparing white carbon black cogeneration nanometer calcium carbonate by integrally utilizing micro silicon powder |
-
2013
- 2013-12-31 CN CN201310746616.9A patent/CN104743561A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030003041A1 (en) * | 2000-02-10 | 2003-01-02 | Joshua Samuel | Process for the preparation of amorphous silica |
| CN101148332A (en) * | 2007-09-12 | 2008-03-26 | 长安大学 | Method for increasing content of silicon dioxide in silicon ash and producing white carbon black |
| CN102424392A (en) * | 2011-09-11 | 2012-04-25 | 中国科学院过程工程研究所 | Method for preparing white carbon black cogeneration nanometer calcium carbonate by integrally utilizing micro silicon powder |
Non-Patent Citations (1)
| Title |
|---|
| 杨振伟: "微硅粉湿法提纯制备球形纳米二氧化硅", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298546A (en) * | 2018-01-02 | 2018-07-20 | 云南永昌硅业股份有限公司 | Prepare the method and its application of high-purity SILICA FUME |
| CN110203934A (en) * | 2018-07-16 | 2019-09-06 | 成亚资源科技股份有限公司 | The silica regeneration method of discarded package material |
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