CN101857231A - Metal silicon powder with ultra reaction activity - Google Patents
Metal silicon powder with ultra reaction activity Download PDFInfo
- Publication number
- CN101857231A CN101857231A CN 201010171992 CN201010171992A CN101857231A CN 101857231 A CN101857231 A CN 101857231A CN 201010171992 CN201010171992 CN 201010171992 CN 201010171992 A CN201010171992 A CN 201010171992A CN 101857231 A CN101857231 A CN 101857231A
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- CN
- China
- Prior art keywords
- metallic silicon
- silicon power
- silicon powder
- metal silicon
- reaction activity
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Abstract
The invention provides metal silicon powder with ultra reaction activity, wherein the content of silicon is more than 98 percent. Based on the total mass of the metal silicon powder, the metal silicon powder contains 2-6 mu g/g of zinc, no more than 10 mu g/g of phosphorus, 80-120 mu g/g of copper, no more than 10 mu g/g of boron, no more than 5 mu g/g of lead and 8-12 mu g/g of tin. The metal silicon powder can greatly improve the capability of participating in chemical reaction and forming a product, and the percent conversion of the metal silicon powder per se and the product yield is as high as 90 percent which is about 10 percent higher than that of common metal silicon powder.
Description
Technical field
The present invention relates to a kind of metallic silicon power, particularly a kind of have an active metallic silicon power of super-reaction.
Background technology
The technical grade metallic silicon power is silver gray, has metalluster.Its fusing point height, resistance toheat is good, and the resistivity height has the heigh antioxidation effect, is called as " industrial monosodium glutamate ", is a kind of important basic industry raw material, has a wide range of applications in many industries and field.In the organic silicon chemical industry, metallic silicon power is an organosilicon macromolecule synthetic basic material, as be used to manufacture the trichlorosilane of the main raw material of the important intermediate of silane coupling agent and other organosilicon product and polysilicon,, silicon monomer, silicone oil, silicon rubber sanitas, with characteristics such as the high thermal resistance that improves product, electrical insulating property, corrosion-resistant, waterproof.In the metallurgical casting industry, metallic silicon power closes additive, si fe alloy agent as non-iron-based, thereby improves steel hardenability.Metallic silicon power also can be applicable to the reductive agent of some metal, is used for new ceramics alloy etc.
The reactive behavior of metallic silicon power is not only relevant, also relevant with its microtexture with composition, proportioning, particle diameter, and its working method, outward appearance, particle shape, size distribution have tangible influence to sintetics yield and effect.Plain metal silica flour quality is very different in the market, and production lacks scientific formula, advanced person's powder-making technique, and therefore have the following disadvantages: the metallic silicon power activity of production is relatively poor, and the product yield is hanged down with self transformation efficiency low.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of active height, product synthetic ratio height and the high superactivity metallic silicon power of self transformation efficiency are provided.
The present invention also further provides the preparation method of above-mentioned superactivity metallic silicon power.
According to superactivity metallic silicon power provided by the invention, the composition of silicon is more than 98%, wherein, based on the total mass of this metallic silicon power, contain the tin of the copper of the zinc of 2-6 μ g/g, the phosphorus that is no more than 10 μ g/g, 80-120 μ g/g, the boron that is no more than 10 μ g/g, the lead that is no more than 5 μ g/g and 8-12 μ g/g in this metallic silicon power.
Ratio in the described metallic silicon power between zinc, tin, the copper is 1: 1-4: 18-28.
The average particulate diameter of described metallic silicon power is 125 μ m-180 μ m.
The specific surface area of described metallic silicon power is 0.6m
2/ g-0.7m
2/ g.
Compared with prior art, metallic silicon power of the present invention has the following advantages: can improve the ability that it participates in chemical reaction and forms product significantly, its metallic silicon power self transformation efficiency, the synthetic yield of target product exceeds plain metal silica flour about 10% up to 90%.
Embodiment
Below metallic silicon power of the present invention is set forth more specifically.
According to superactivity metallic silicon power provided by the invention, wherein, based on the gross weight of this metallic silicon power, contain the tin of the copper of the zinc of 2-6 μ g/g, the phosphorus that is no more than 10 μ g/g, 80-120 μ g/g, the boron that is no more than 10 μ g/g, the lead that is no more than 5 μ g/g and 8-12 μ g/g in this metallic silicon power.Preferably, based on the gross weight of this metallic silicon power, contain the tin of the copper of the zinc of 3-5 μ g/g, the phosphorus that is no more than 8 μ g/g, 90-100 μ g/g, the boron that is no more than 8 μ g/g, the lead that is no more than 4 μ g/g and 9-10 μ g/g in this metallic silicon power.
A preferred embodiment of the invention, the ratio of contained zinc, tin, copper weight is 1 in the described metallic silicon power: 1-4: 18-28 is preferably 1: 2-3: 19-20.
According to another kind of preferred implementation of the present invention, the average particulate diameter of described metallic silicon power is 125 μ m-180 μ m, is preferably 130-150 μ m, and specific surface area is 0.5m
2/ g-0.8m
2/ g is preferably 0.6-0.7m
2/ g.
There is no particular limitation to the method for preparing product of the present invention.For instance, the preparation raw material can be carried out at least primary fragmentation after, according to the place that will use and purpose it is carried out sub-sieve, filtration obtains product of the present invention then.Preferably carry out at least twice fragmentation, more preferably carry out tertiary crushing at least.In a kind of preferred implementation of the present invention, the method for preparing metallic silicon power of the present invention may further comprise the steps: the metal silico briquette is carried out sub-sieve after the one-level fragmentation, the product that screening is obtained carries out two-stage crushing, pulverizing (for example towards rotating pulverizing) then, sieves and filtration obtains product of the present invention again.Preferably, the humidity of described metallic silicon power raw material is no more than 2%, more preferably no more than 1%.Above-mentioned preparation method can be step can be continous way also, be preferably continous way, therefore, between the aforesaid operations step, can the product that processing obtains be transported to next step by transporting mechanisms such as for example belt transmission.More preferably, consider factors such as environment protection simultaneously in order to reduce loss, the filtration in the aforesaid method can be adopted cloth envelop collector, can also adopt the jar that gathers dust to prevent that a large amount of dust from entering in the environment simultaneously.
The invention will be further described by following examples:
Embodiment:
The metallic silicon power (humidity is 1%) of 1000kg is carried out one-level fragmentation, sub-sieve, two-stage crushing successively, carries, sieves and filter the metallic silicon power that obtains 880kg again with sieve apparatus towards rotating pulverizing, bucket, and all the other do other purposes such as fireproof raw material for byproduct metal SILICA FUME and low amounts of dust by recovery.
Claims (4)
1. metal silicon powder with ultra reaction activity, the composition of silicon is more than 98%, it is characterized in that, based on the total mass of this metallic silicon power, contain the tin of the copper of the zinc of 2-6 μ g/g, the phosphorus that is no more than 10 μ g/g, 80-120 μ g/g, the boron that is no more than 10 μ g/g, the lead that is no more than 5 μ g/g and 8-12 μ g/g in this metallic silicon power.
2. metallic silicon power according to claim 1 is characterized in that, the ratio in this metallic silicon power between zinc, tin, the copper is 1: 1-4: 18-28.
3. metallic silicon power according to claim 1 is characterized in that, the average particulate diameter of described metallic silicon power is 125 μ m-180 μ m.
4. metallic silicon power according to claim 1 is characterized in that, the specific surface area of described metallic silicon power is 0.6m
2/ g-0.7m
2/ g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010171992 CN101857231A (en) | 2010-05-14 | 2010-05-14 | Metal silicon powder with ultra reaction activity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010171992 CN101857231A (en) | 2010-05-14 | 2010-05-14 | Metal silicon powder with ultra reaction activity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101857231A true CN101857231A (en) | 2010-10-13 |
Family
ID=42943428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010171992 Pending CN101857231A (en) | 2010-05-14 | 2010-05-14 | Metal silicon powder with ultra reaction activity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101857231A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043112A (en) * | 1988-12-08 | 1990-06-20 | 埃尔凯姆公司 | Silica flour and production method thereof |
-
2010
- 2010-05-14 CN CN 201010171992 patent/CN101857231A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043112A (en) * | 1988-12-08 | 1990-06-20 | 埃尔凯姆公司 | Silica flour and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《有机硅材料》 20071231 贾玉珍等 硅粉质量对甲基氯硅烷合成反应的影响 第134～137页 1-4 第21卷, 第3期 2 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101013 |