CN109761626A - For producing environmentally friendly coal tar and its application of anhydrous stemming - Google Patents
For producing environmentally friendly coal tar and its application of anhydrous stemming Download PDFInfo
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- CN109761626A CN109761626A CN201910239818.1A CN201910239818A CN109761626A CN 109761626 A CN109761626 A CN 109761626A CN 201910239818 A CN201910239818 A CN 201910239818A CN 109761626 A CN109761626 A CN 109761626A
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- coal tar
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- anhydrous stemming
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Abstract
The environmentally friendly coal tar and its application that the invention discloses a kind of for producing anhydrous stemming, wherein according to parts by weight, it includes 50~80 parts of coal tar, 10~25 parts of high adsorption active carbon micro mist, 5~15 parts of crosslinking agent, 3~12 parts of coupling agent that its effective raw material is made to the environmentally friendly coal tar for producing anhydrous stemming.Environmentally friendly coal tar for producing anhydrous stemming of the invention can enable the anhydrous stemming of production more environmentally-friendly, and mechanical strength is more preferable, and the splash time is short, and reaming speed is slow, and tapping duration is long.
Description
Technical field
The invention belongs to refractory material production fields, are related to a kind of formula of amorphous refractory, specifically one
Plant environmentally friendly coal tar and its application for producing anhydrous stemming.
Background technique
Anhydrous stemming is refractory material very crucial in ironmaking processes.It is high with the fast development of China's steel and iron industry
Furnace constantly develops to long service life, strengthening smelting direction, and the requirement to tapping hole anhydrous stemming performance is higher and higher, it is desirable that it has
Multiple workability of good performance (i.e. Packing character, Kekelé structure count), gas permeability, agglutinating property, the associativity of new and old stemming, resistant to corrosion
Property, scour resistance and feature of environmental protection etc., especially require that the tapping process splash time is short, reaming speed is slow, and tapping duration is long.Design
During stemming is formulated, fully consider that anhydrous stemming is functional refractory material, that is, disposable material, full
When sufficient blast furnace casting requires, production cost is reduced as far as possible.
Due in the preparation process of anhydrous stemming, needing to add coal tar, and using the preparation of current coal tar without water cannon
Mud releases a large amount of BaP once heated, which is a kind of extremely strong carcinogen, to environment and staff's body
It is highly unwanted, therefore developing nontoxic, cheap bonding agent is the task of top priority to improve anhydrous stemming performance.
Summary of the invention
The technical problem to be solved in the present invention is to provide for a kind of for producing the environmentally friendly coal tar of anhydrous stemming, it is intended to
It is more environmentally friendly when a kind of production applied to anhydrous stemming is provided, reduce the coal tar injured to environment and human body.
Another object of the present invention is to provide a kind of application of above-mentioned environmentally friendly coal tar.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
It is a kind of for producing the environmentally friendly coal tar of anhydrous stemming, according to parts by weight, it includes coal tar 50 that its effective raw material, which is made,
~80 parts, 10~25 parts of high adsorption active carbon micro mist, 5~15 parts of crosslinking agent, 3~12 parts of coupling agent.
As limitation of the invention: according to parts by weight, it includes 60~75 parts of coal tar, high suction that its effective raw material, which is made,
13~20 parts of attached active carbon micro mist, 7~12 parts of crosslinking agent, 5~10 parts of coupling agent.
Limit as to another kind of the invention: according to parts by weight, it includes 69 parts of coal tar, height that its effective raw material, which is made,
15 parts of absorption activated carbon micro mist, 10 parts of crosslinking agent, 6 parts of coupling agent.
Still another limit as to of the invention: for the crosslinking agent as TAIC, the coupling agent is KH-550 model
Coupling agent.
Coupling agent in the present invention uses the coupling agent of KH-550 model for amido functional group silane, in alkalinity.Appearance is
Colourless or yellowish transparency liquid, it is versatile, organic solvent is dissolved in, but acetone, carbon tetrachloride are not suitable for making diluent.It can
It is dissolved in water, is hydrolyzed in water, 217 DEG C of boiling point, density P25'g/m1 0.946, index of refraction ND25:1.4205,104 DEG C of flash-point, point
Son amount 221.4, content >=97%, this product are a kind of excellent finishing agent for glass fibre, improve the mechanical strength of anhydrous stemming,
Electrical property and anti-aging property.
In the present invention crosslinking agent use TAIC, be yellowish liquid or crystalline solid, content >=95%, acid value≤
1.0mgKOH/g, molecular weight 249.27 are colourless liquid or yellowish liquid or crystalline solid character under room temperature (25 DEG C), than
Weight is 1.155(30 DEG C) specific heat: 0.6(40 DEG C), flash-point is 355 DEG C, and this product is to can be improved stemming sintering velocity and intensity.
The mesh number of high adsorption active carbon micro mist employed in the present invention is 200 mesh, being capable of effective having in adsorbing smoke
Evil substance.
The present invention also provides above-mentioned for producing a kind of application of the environmentally friendly coal tar of anhydrous stemming, described for producing
The environmentally friendly coal tar of anhydrous stemming is applied to prepare the Al2O3-SiO2-SiC-C anhydrous stemming system of tar-pitch combination.
Due to the adoption of the above technical solution, compared with prior art, acquired technological progress is the present invention:
(1) the environmentally friendly coal tar for producing anhydrous stemming of the invention is using coal tar in the prior art as primary raw material,
Abundance, cheap, sintering character is good, significant effect；
(2) coupling agent is introduced as efficient toughener in the environmentally friendly coal tar for producing anhydrous stemming of the invention, be conducive to
Raising stemming slag resistance, which is become reconciled, beats mud；
(3) that anhydrous stemming volume can be improved using crosslinking agent in the environmentally friendly coal tar for producing anhydrous stemming of the invention is close
Degree reduces the porosity, increases coal tar carbonization degree, improves anhydrous stemming intensity；
(4) the high adsorption active carbon micro mist that 200 mesh are used in the environmentally friendly coal tar for producing anhydrous stemming of the invention, can
It adsorbs and solidifies the nuisance in coal tar, be good for the environment.
In conclusion the environmentally friendly coal tar for producing anhydrous stemming of the invention can enable the anhydrous stemming of production more
Environmental protection, mechanical strength is more preferable, and the splash time is short, and reaming speed is slow, and tapping duration is long.
The present invention is described in further detail below in conjunction with specific embodiment.
Specific embodiment
Reagent as used in the following examples is existing commercial reagent unless otherwise specified, and test method is such as without special theory
It is bright to be all made of existing test method.
Examples 1 to 7 is used to produce the environmentally friendly coal tar of anhydrous stemming
Examples 1 to 7 is respectively a kind of for producing the environmentally friendly coal tar of anhydrous stemming, its effective component is made and is specifically shown in Table 1
Above-mentioned each ingredient is mixed evenly both to obtain and is used to produce anhydrous stemming described in any one of Examples 1 to 7
Environmentally friendly coal tar.
Embodiment 8 is used to produce the application of the environmentally friendly coal tar of anhydrous stemming
Present embodiments provide a kind of environmentally friendly coal tar for being used to produce anhydrous stemming using any one in Examples 1 to 7
Using.Its Al2O3-SiO2-SiC-C anhydrous stemming system for being used to prepare tar-pitch combination.Reality is used in anhydrous stemming production instead
The environmentally friendly coal tar for being used to produce anhydrous stemming of 1~7 any one of example is applied, pitch proportion can be down to 3%.Using embodiment 1~
The anhydrous stemming of coal tar production in 7 is in Liaoning Yingkou steel plant 1350m3It is tried on blast furnace and on victory Baosteel iron 1080m3 blast furnace
It tests, effect is satisfactory, stemming production and use process euosmia invariably, and stokehold, which emits tobacco concentration and subtracts, is down to 25% by 85%,
The splash time was down within 3 minutes by 7 minutes, and tapping duration extended to 50 minutes or more by 35 minutes.
Claims (6)
1. a kind of for producing the environmentally friendly coal tar of anhydrous stemming, it is characterised in that: according to parts by weight, its effective raw material is made
Including 50~80 parts of coal tar, 10~25 parts of high adsorption active carbon micro mist, 5~15 parts of crosslinking agent, 3~12 parts of coupling agent.
2. according to claim 1 for producing the environmentally friendly coal tar of anhydrous stemming, it is characterised in that: in parts by weight
Meter, it includes 60~75 parts of coal tar, 13~20 parts of high adsorption active carbon micro mist, 7~12 parts of crosslinking agent, idol that its effective raw material, which is made,
5~10 parts of agent of connection.
3. according to claim 1 or 2 for producing the environmentally friendly coal tar of anhydrous stemming, it is characterised in that: by weight
Number meter, it includes 69 parts of coal tar, 15 parts of high adsorption active carbon micro mist, 10 parts of crosslinking agent, 6 parts of coupling agent that its effective raw material, which is made,.
4. according to claim 1 or 2 for producing the environmentally friendly coal tar of anhydrous stemming, it is characterised in that: the crosslinking
Agent is TAIC, and the coupling agent is the coupling agent of KH-550 model.
5. according to claim 3 for producing the environmentally friendly coal tar of anhydrous stemming, it is characterised in that: the crosslinking agent
For TAIC, the coupling agent is the coupling agent of KH-550 model.
6. it is as claimed in any of claims 1 to 5 for producing a kind of application of the environmentally friendly coal tar of anhydrous stemming,
It is characterized by: the environmentally friendly coal tar for producing anhydrous stemming is applied to prepare the Al2O3- of tar-pitch combination
SiO2-SiC-C anhydrous stemming system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239818.1A CN109761626A (en) | 2019-03-27 | 2019-03-27 | For producing environmentally friendly coal tar and its application of anhydrous stemming |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910239818.1A CN109761626A (en) | 2019-03-27 | 2019-03-27 | For producing environmentally friendly coal tar and its application of anhydrous stemming |
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| CN1072440A (en) * | 1991-11-18 | 1993-05-26 | 冶金工业部洛阳耐火材料研究院 | A kind of carbon containing bonding agent for refratory material |
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