CN1054322C - Granular insulating agent and its production technology - Google Patents
Granular insulating agent and its production technology Download PDFInfo
- Publication number
- CN1054322C CN1054322C CN 92112202 CN92112202A CN1054322C CN 1054322 C CN1054322 C CN 1054322C CN 92112202 CN92112202 CN 92112202 CN 92112202 A CN92112202 A CN 92112202A CN 1054322 C CN1054322 C CN 1054322C
- Authority
- CN
- China
- Prior art keywords
- rice husk
- insulating agent
- water
- agent
- granular heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Glanulating (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a granular heat insulating agent and a production process thereof. Rice hulls are regarded as principal raw material to be made by technology of carbonation, proportion, granulation, desiccation, etc. The granular heat insulating agent has ingredients comprising at least 92% of carbonation rice hulls, 3 to 5% of an adhesive and at most 3% of water. The proportions are all counted by a weight percentage. The present invention has particular production processes of carbonation, proportion, granulation and desiccation. The present invention has the advantage that a blowing dust amount is reduced by 56.32%. Therefore, production environmental pollution and harm to a human body are effectively controlled, and a covering spreading surface is reinforced. Therefore, heat insulating performance is enhanced. Meanwhile, transportation is convenient, and transportation costs are saved.
Description
The present invention relates to a kind of granular heat-insulating agent of steel, hot-metal insulating and its production technology of being used for.
Before the eighties, people once used raw rice husk as heat preserving agent, cover the molten steel surface in the steel ladle, because at high temperature burning, raw rice husk produces a large amount of flue dust and flame, cause the severe contamination of environment, so to the eighties mid-term, people use new insulation material---charring rice husk instead, be about to raw rice husk and handle the back use, reduced pyrotechnics through charing.But,, production environment and workman's health are all caused very big harm so, produce bigger dust in use along with the high-temperature heat flux ascension because charring rice husk is the powdery goods and materials.
The purpose of this invention is to provide a kind of novel liquid steel bag, hot-metal bottle heat preserving agent and its production technology, it can overcome existing shortcoming in the prior art, improves serviceability, reduces the pollution that environment is caused simultaneously.
The object of the present invention is achieved like this: the capsomere heat preserving agent is primary raw material with the rice husk, make through technologies such as charings, batching, granulation, drying, its composition is: charring rice husk is more than 92%, binding agent 3-5%, water is below 3%, and aforementioned proportion all is weight percentage.Its concrete production technology is: charing: rice husk is heated to carbonization temperature, make it abundant charing, then cooling naturally; Batching: charring rice husk, water and binding agent are mixed, and mixed proportion is rice husk 65%-85%, binding agent 2-4%, water 16-30%; Granulate: the material that will prepare is put into rotary granulator and is granulated; Dry: the particle drying machine dehydration that makes makes its water content below 3%.
Binding agent in the above-mentioned granular heat-insulating agent adopts carboxymethyl cellulose.
The advantage of granular heat-insulating agent provided by the present invention is: reduced dust emission 56.32%, therefore controlled production environment effectively and polluted the harm that reaches human body, strengthened covering the face of sprawling, therefore heat-insulating property has been improved, be convenient to transportation simultaneously, saved freight.
Be specific embodiments of the invention below:
One, rice husk is heated; make it abundant charing; getting charring rice husk, carboxymethyl cellulose and water mixes; mixed proportion is: 70: 3: 27 (percentage by weight), and put into rotary granulator and granulate, granularity requirements 3-8mm; the drying machine dehydrates; water content is finished product below 3% through the particle after powder, the grain separation, and packing is dispatched from the factory.
Two, rice husk is heated; make it abundant charing; getting charring rice husk, carboxymethyl cellulose and water mixes; mixed proportion is 75: 4: 21 (percentage by weight); put into rotary granulator and granulate, granularity requirements is 3-8mm, and the drying machine dehydrates; water content is finished product below 3% through the capsomere after powder, the grain separation.
Three, rice husk is heated; make it abundant charing; getting charring rice husk, carboxymethyl cellulose and water mixes; mixed proportion is 80: 2: 18 (percentage by weight); put into rotary granulator and granulate, granularity requirements is 3-8mm, and the drying machine dehydrates; water content is finished product below 3% through the capsomere after powder, the grain separation.
Claims (2)
1, granular heat-insulating agent is characterized in that: it contains charring rice husk more than 92%, carboxymethyl cellulose 3-5%, and water is (percentage by weight) below 3%.
2, the production technology of granular heat-insulating agent is characterized in that it comprises charing: rice husk is heated to carbonization temperature, make it abundant charing, then cooling naturally; Batching: charring rice husk, water and binding agent are mixed, and mixed proportion is charring rice husk 65-85%, binding agent 2-4%, water 16-30%; Granulate: the material that will prepare is put into rotary granulator and is granulated; Dry: the particle drying machine dehydration that makes, make its water content below 3%, the binding agent in the above-mentioned granular heat-insulating agent adopts carboxymethyl cellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92112202 CN1054322C (en) | 1992-12-02 | 1992-12-02 | Granular insulating agent and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92112202 CN1054322C (en) | 1992-12-02 | 1992-12-02 | Granular insulating agent and its production technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1074153A CN1074153A (en) | 1993-07-14 |
| CN1054322C true CN1054322C (en) | 2000-07-12 |
Family
ID=4945812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92112202 Expired - Fee Related CN1054322C (en) | 1992-12-02 | 1992-12-02 | Granular insulating agent and its production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1054322C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065281C (en) * | 1998-01-08 | 2001-05-02 | 武汉钢铁(集团)公司 | Carbon-free molten steel holding agent and its production |
| CN1064085C (en) * | 1998-07-16 | 2001-04-04 | 江苏江南铁合金厂 | Agent for refining and heat-insulating of molten steel surface and its preparation process |
| CN104711384A (en) * | 2013-12-13 | 2015-06-17 | 上海梅山钢铁股份有限公司 | Method for heat insulation of molten iron and smooth separation of slag and iron |
-
1992
- 1992-12-02 CN CN 92112202 patent/CN1054322C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1074153A (en) | 1993-07-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |