CN101126114A - Granular charring rice husk thermal insulation agent - Google Patents
Granular charring rice husk thermal insulation agent Download PDFInfo
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- CN101126114A CN101126114A CNA2007100443118A CN200710044311A CN101126114A CN 101126114 A CN101126114 A CN 101126114A CN A2007100443118 A CNA2007100443118 A CN A2007100443118A CN 200710044311 A CN200710044311 A CN 200710044311A CN 101126114 A CN101126114 A CN 101126114A
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- rice husk
- charring rice
- thermal insulation
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- thermo
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Abstract
The invention relates to metallurgy field, in particularly to a granular carbonizing rice husk thermo to insulating agent used in iron and steel melting progress. The invention is characterized in that: the thermo of the insulating agent consists of 45 to 80 percent carbonizing rice husk, 10 to 30 percent binder and 1 to 30 percent filling material. The binder refers to one of or a combination of at least two components among amylum, caustic soda flake, bentonite, white putty waterglass, sodium carboxymethyl cellulose (CMC), phosphoaluminate cement and silicate cement. The thermo-insulating agent contains comparatively high carbonizing rice husk, and effectively bonds the carbonizing rice husk into granule shape while at the same time avoids the adoption of calcareousness and dolomite, so as to preserve insulation property of the thermo-insulating.
Description
Technical field
The present invention relates to metallurgical class, relate to the heat preserving agent that in steel-making/iron manufacturing process, uses, a kind of granular charring rice husk thermal insulation agent specifically.
Background technology
At present, what the ladle heat insulation agent that steel mill uses was commonly used is the charring rice husk powder, and the charring rice husk powder is because of its high insulating effect, with low cost and well received, still, the charring rice husk opaque is light, easily fly upward, cause dust content height in the production environment, influence environment and the workman is healthy.Chinese patent application 00123230.4 has been introduced a kind of granular molten steel surface charing heat preserving agent, and this heat preserving agent charring rice husk content is low, less than 50%, and does not have other light materials, causes the heat preserving agent bulk density to lay particular stress on, and influences heat insulation effect.If the content height of common charring rice husk, then be difficult under the prerequisite that does not influence steel quality, effectively it is bonded to particulate state, introduced a kind of rounded grain heat preserving agent for liquid steel in the Chinese patent application 00110748.8, contain a large amount of charring rice husk powder in this heat preserving agent, but wherein contain more lime powder and ground dolomite simultaneously and make jelling agent, as everyone knows, lime powder and ground dolomite all are the strong materials of water-absorbent, and, becoming crystal water after the suction, can not remove at 200 ℃-300 ℃ at all, if storing temperature is too high, may make the charring rice husk material combustion.If therefore this rounded grain heat preserving agent for liquid steel that contains crystal water joins molten steel surface, cause molten steel to increase hydrogen easily, strand produces the defective of white point, causes greater loss to steel mill.
Summary of the invention
The objective of the invention is at above-mentioned the deficiencies in the prior art part, a kind of granular charring rice husk thermal insulation agent is provided, the charring rice husk content of this heat preserving agent is higher, and when avoiding adopting lime and rhombspar, charring rice husk effectively can be bonded together and be particulate state, guarantee the heat-insulating property of heat preserving agent.
Technical scheme of the present invention is as follows:
A kind of granular charring rice husk thermal insulation agent, it is characterized in that, this heat preserving agent consist of charring rice husk 45-80%, binding agent 10-30%, packing material 1-30%, wherein said binding agent refers to the composition of a kind of in starch, sheet alkali, wilkinite, white clay, water glass, sodium cellulose glycolate (CMC), aluminate cement, the silicate cement or at least two kinds.
Described packing material refers to expanded vermiculite, pearlstone, floats pearl, the composition of a kind of in the diatomite, power plant's ash or at least two kinds.
Described charring rice husk granularity≤2mm.
Granularity≤the 1mm of described packing material.
Product heat preserving agent granularity of the present invention is at 1-20mm, bulk density (unit weight)≤0.55g/cm
3
Advantage of the present invention is, little, the high insulating effect of unit weight does not have dust pollution, sticking simultaneously bag, and not slagging scorification, it is low to contain crystal water.
Embodiment
By the following examples feature of the present invention and other correlated characteristic are described in further detail, so that technician's of the same trade understanding:
| Embodiment | Heat preserving agent composition (weight percent %) | |||||||
| Charring rice husk | Pearlstone | Expanded vermiculite | Sheet alkali (water dissolves) | Starch | Silicate cement | Sodium cellulose glycolate (cmc) | High-temperature cement | |
| One | 45 | 10 | 10 | 0.5 | 3 | 15 | 16.5 | |
| Two | 50 | 15 | 5 | 1 | 2 | 27 | ||
| Three | 60 | 10 | 30 | |||||
| Four | 70 | 10 | 0.5 | 1 | 17.5 | 1 | ||
| Five | 80 | 8 | 0.5 | 1 | 1 | 9.5 | ||
Above-mentioned each component by after mixing, is balled up at granulating disc, perhaps be squeezed into cylindrically, under 80 ℃ of-250 ℃ of temperature, dry and get final product the granularity≤1mm of packing materials such as above-mentioned pearlstone.
By with being used in combination of a high proportion of charring rice husk and multiple weighting material and multiple binding agent, charring rice husk is effectively bonded together being particulate state in the foregoing description.Test shows, the unit weight of this product are less than 0.6, and fusing point is about 1400 ℃.
Claims (4)
1. a granular charring rice husk thermal insulation agent is characterized in that, this heat preserving agent consist of charring rice husk 45-80%, binding agent 10-30%, packing material 1-30%;
Wherein said binding agent refers to the composition of a kind of in starch, sheet alkali, wilkinite, white clay, water glass, sodium cellulose glycolate (CMC), aluminate cement, the silicate cement or at least two kinds.
2. a kind of granular charring rice husk thermal insulation agent according to claim 1 is characterized in that described packing material refers to expanded vermiculite, pearlstone, floats pearl, the composition of a kind of in the diatomite, power plant's ash or at least two kinds.
3. a kind of granular charring rice husk thermal insulation agent according to claim 1 is characterized in that described charring rice husk granularity is not more than 2mm.
4. a kind of granular charring rice husk thermal insulation agent according to claim 1 is characterized in that the granularity of described packing material is not more than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100443118A CN101126114A (en) | 2007-07-27 | 2007-07-27 | Granular charring rice husk thermal insulation agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100443118A CN101126114A (en) | 2007-07-27 | 2007-07-27 | Granular charring rice husk thermal insulation agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101126114A true CN101126114A (en) | 2008-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100443118A Pending CN101126114A (en) | 2007-07-27 | 2007-07-27 | Granular charring rice husk thermal insulation agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101126114A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296145A (en) * | 2011-10-08 | 2011-12-28 | 彭州市华泰冶金材料厂 | New application of fungus residue and heat-insulating covering agent for metallurgical industry |
| CN103231034A (en) * | 2013-04-09 | 2013-08-07 | 宣全 | Rice hull ash composite covering agent |
| CN103482895A (en) * | 2013-08-06 | 2014-01-01 | 常州市兴存化工有限公司 | Preparation method of modified rice hulls |
| CN103787643A (en) * | 2013-12-12 | 2014-05-14 | 青岛无为保温材料有限公司 | Novel high-efficiency thermal-insulating energy-saving slurry and preparation method thereof |
| CN103787642A (en) * | 2013-12-12 | 2014-05-14 | 青岛无为保温材料有限公司 | Efficient thermal insulation energy-saving material |
| CN104308106A (en) * | 2014-10-08 | 2015-01-28 | 吴江市液铸液压件铸造有限公司 | Steel ladle covering agent |
| CN104313212A (en) * | 2014-09-28 | 2015-01-28 | 四川德胜集团钒钛有限公司 | Molten iron heat preservation agent, preparation method of molten iron heat preservation agent and method for preserving temperature of molten iron |
| US9791205B2 (en) | 2015-12-09 | 2017-10-17 | Whirlpool Corporation | Insulating material with renewable resource component |
| CN107354267A (en) * | 2017-06-27 | 2017-11-17 | 常州市协旺纺织品有限公司 | A kind of heat preserving agent for liquid steel |
| CN107552746A (en) * | 2017-08-31 | 2018-01-09 | 赣州鼎洋贸易有限公司 | A kind of heat preserving agent for liquid steel and its insulation oxidant layer |
| CN114749649A (en) * | 2022-03-08 | 2022-07-15 | 盐城市联鑫钢铁有限公司 | Method for accurately controlling temperature of molten steel |
-
2007
- 2007-07-27 CN CNA2007100443118A patent/CN101126114A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296145B (en) * | 2011-10-08 | 2013-03-20 | 彭州市华泰冶金材料厂 | New application of fungus residue and heat-insulating covering agent for metallurgical industry |
| CN102296145A (en) * | 2011-10-08 | 2011-12-28 | 彭州市华泰冶金材料厂 | New application of fungus residue and heat-insulating covering agent for metallurgical industry |
| CN103231034A (en) * | 2013-04-09 | 2013-08-07 | 宣全 | Rice hull ash composite covering agent |
| CN103482895B (en) * | 2013-08-06 | 2015-11-18 | 常州市兴存化工有限公司 | The preparation method of modification rice husk |
| CN103482895A (en) * | 2013-08-06 | 2014-01-01 | 常州市兴存化工有限公司 | Preparation method of modified rice hulls |
| CN103787643A (en) * | 2013-12-12 | 2014-05-14 | 青岛无为保温材料有限公司 | Novel high-efficiency thermal-insulating energy-saving slurry and preparation method thereof |
| CN103787642A (en) * | 2013-12-12 | 2014-05-14 | 青岛无为保温材料有限公司 | Efficient thermal insulation energy-saving material |
| CN104313212A (en) * | 2014-09-28 | 2015-01-28 | 四川德胜集团钒钛有限公司 | Molten iron heat preservation agent, preparation method of molten iron heat preservation agent and method for preserving temperature of molten iron |
| CN104313212B (en) * | 2014-09-28 | 2017-02-22 | 四川德胜集团钒钛有限公司 | Molten iron heat preservation agent, preparation method of molten iron heat preservation agent and method for preserving temperature of molten iron |
| CN104308106A (en) * | 2014-10-08 | 2015-01-28 | 吴江市液铸液压件铸造有限公司 | Steel ladle covering agent |
| CN104308106B (en) * | 2014-10-08 | 2016-07-06 | 吴江市液铸液压件铸造有限公司 | A kind of ladle covering agent |
| US9791205B2 (en) | 2015-12-09 | 2017-10-17 | Whirlpool Corporation | Insulating material with renewable resource component |
| US9976798B2 (en) | 2015-12-09 | 2018-05-22 | Whirlpool Corporation | Insulating material with renewable resource component |
| CN107354267A (en) * | 2017-06-27 | 2017-11-17 | 常州市协旺纺织品有限公司 | A kind of heat preserving agent for liquid steel |
| CN107552746A (en) * | 2017-08-31 | 2018-01-09 | 赣州鼎洋贸易有限公司 | A kind of heat preserving agent for liquid steel and its insulation oxidant layer |
| CN114749649A (en) * | 2022-03-08 | 2022-07-15 | 盐城市联鑫钢铁有限公司 | Method for accurately controlling temperature of molten steel |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080220 |