CN101348364B - Method for producing light heat-insulating brick from sawdust and light heat-insulating brick thereof - Google Patents
Method for producing light heat-insulating brick from sawdust and light heat-insulating brick thereof Download PDFInfo
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- CN101348364B CN101348364B CN2008101053763A CN200810105376A CN101348364B CN 101348364 B CN101348364 B CN 101348364B CN 2008101053763 A CN2008101053763 A CN 2008101053763A CN 200810105376 A CN200810105376 A CN 200810105376A CN 101348364 B CN101348364 B CN 101348364B
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Abstract
The invention provides a method for utilizing sawdust to produce lightweight heat insulating bricks. The lightweight heat insulating bricks prepared by use of the method is high in strength and good in heat insulating performance, saves energy, protects environment, and has great economic value and social benefit.
Description
Technical field
The present invention relates to the light heat-insulating brick technology, particularly relate to a kind of adiabatic technology of changeing of sawdust production lightweight of utilizing.
Technical background
Light heat-insulating brick iron and steel, cement, chemical industry, glass etc. industrial have widely use, be applied to, be applicable to the liner or the thermofin of petroleum cracking stove, metallurgical hotblast stove, ceramic roller kiln, tunnel furnace, electroceramics drawer kiln, glass pot kiln and various electric furnaces, and the furnace lining of blast furnace, the slide gate nozzle of concise steel, porous plug, lining brick and the liner of tower tray and aluminium cell, the guide rail of process furnace etc. of non-ferrous metal (copper, lead, zinc) smelting furnace, it can directly contact flame.
At present, existing light heat-insulating brick is to be basic raw material with the fireclay mostly, add organic weighting material, common way is that polystyrene spheres and sawdust are mixed as organic weighting material according to certain proportioning, these organic weighting materials can be burnt so that produce pore texture in the brick body in process of producing product, thereby reduce the density and the quality of brick body.
This production method will be in process of production because the burning of polystyrene spheres will form a large amount of benzene series things, surrounding environment and atmosphere are produced harm greatly, and the polystyrene spheres cost is higher, burn aborning, also can cause the increase of cost and the waste of resource, not meet environmental requirement and Sustainable development policy that country advocates.
Therefore, how to solve the adiabatic reincarnation of lightweight produce in the pollution that surrounding environment and atmosphere are caused of the benzene series thing that produced of polystyrene spheres burning, and avoid or the burning that reduces polystyrene spheres is lost resource and the cost waste cause, have extremely-huge economic and social benefit.
Yet in the light heat-insulating brick production technique of present widespread usage, because the limitation of existing manufacturing technique, make if adopt sawdust separately as weighting material, be difficult to find the best joint of close characteristic of product body and product strength characteristic, limited the practical application that utilizes sawdust to produce light heat-insulating brick greatly.
Summary of the invention
At shortcoming that exists in the prior art and problem, the object of the present invention is to provide a kind of insulation brick that utilizes sawdust to replace polystyrene spheres to produce the method for light heat-insulating brick and utilize this method to produce.
Technical scheme of the present invention is as follows:
Utilize sawdust to produce the method for light heat-insulating brick, it is characterized in that: may further comprise the steps:
(1) according to weight ratio particulate state material mullite 3.8%, fireclay 42.7%, sawdust 53.5% are mixed, wherein fireclay carries out superfine pulverizing and handles, and adds water and stir into the mud shape;
(2) mud shape batch mixing is carried out old viscosity and the plasticity of ageing mixture to improve pug;
(3) after being made green compact and drying, burns till old pug;
(4) with the adobe of burning till through cold-formed.
Described mullite is high potassium raw material mullite synthesizing.
Described green compact are prepared from by vacuum-extruder.
Described green compact burn till in tunnel furnace.
Described cold working grinds for adopting rattler.
A kind of light heat-insulating brick is characterized in that: described light heat-insulating brick is to adopt the light heat-insulating brick of method processing as previously mentioned.
Technique effect of the present invention is as follows:
The present invention does aggregate by selecting high potassium raw material synthetic mullite particle for use, do the matrix material with the fireclay of handling through superfine pulverizing, with the forestry waste sawdust is weighting material, after clay and water mixing, can make like this and produce good viscosity, with the good combination of mullite, clay and sawdust, made green compact are when burning till, and its weighting material--sawdust will be burnt in process of production, produce the pore texture of uniformity in the brick body, obtain light heat-insulating brick.
The high potassium raw material synthetic mullite that adopts among the present invention has characteristics such as volume density is little, thermal expansivity is little, thermal conductivity is low, and the lagging material that is principal crystalline phase with high potassium raw material synthetic mullite has characteristics such as volume density is little, intensity is high, thermal conductivity coefficient is low, antistrip performance is good.In the sintering procedure, high potassium raw material synthetic mullite can increase the ratio of liquid phase, the strength characteristics of product is able to remarkable enhancing, makes the close characteristic of product body of light heat-insulating brick and combination the best of product strength characteristic also to make sawdust become possibility as weighting material production light heat-insulating brick.
This sawdust that utilizes is compared extremely as the lightweight of weighting material production with traditional polystyrene spheres as the light heat-insulating brick of weighting material production: have better effect of heat insulation, under identical adiabatic parameter condition, can be so that the obvious attenuation of kiln thickness, the volume size of kiln can be reduced on the one hand, the useful volume of kiln can be improved on the other hand; Hot compressive strength is higher, because its lightweight and low heat conductivity, the brick body is accumulated less heat, and energy-saving effect is more obvious in the periodical operation kiln; Prolong the work-ing life of kiln; Owing to do not re-use polystyrene spheres in the process of producing product as weighting material but use waste--sawdust instead as wood-processing industry, can effectively reduce product cost, economize on resources, reach the purpose of energy-conserving and environment-protective.
Embodiment
The production and processing technology of light heat-insulating brick of the present invention
(1) preparation raw material mixes the high potassium raw material of particulate state material synthetic mullite 3.8%, high purity fireclay 42.7%, sawdust 53.5% according to weight ratio, and wherein fireclay carries out superfine pulverizing and handles, and adds water and stir into the mud shape.Do the matrix material with the highly purified fireclay that superfine pulverizing is handled, make after clay and water mix to produce good viscosity, mullite, clay and sawdust combination;
The preparation material composition such as the following table of wherein high potassium raw material synthetic mullite and fireclay:
(3) it is old that the pug that will mix carries out ageing mixture, with the viscosity and the plasticity of remarkable performance pug;
(4) old intact pug is extruded brick body green compact by vacuum-extruder;
(5) green compact with preparation carry out drying;
(6) dried green compact are burnt till by tunnel furnace;
(7) adobe of burning till is processed into the light heat-insulating brick finished product by rattler.
Claims (5)
1. utilize sawdust to produce the method for light heat-insulating brick, it is characterized in that: may further comprise the steps:
(1) according to weight ratio the high potassium raw material of particulate state material mullite synthesizing 3.8%, fireclay 42.7%, sawdust 53.5% are mixed, wherein fireclay carries out superfine pulverizing and handles, and adds water and stir into the mud shape;
(2) mud shape batch mixing is carried out old viscosity and the plasticity of ageing mixture to improve pug;
(3) after being made green compact and drying, burns till old pug;
(4) with the adobe of burning till through cold-formed.
2. the method for utilizing sawdust to produce light heat-insulating brick as claimed in claim 1, it is characterized in that: described green compact are prepared from by vacuum-extruder.
3. the method for utilizing sawdust to produce light heat-insulating brick as claimed in claim 2, it is characterized in that: described green compact burn till in tunnel furnace.
4. the method for utilizing sawdust to produce light heat-insulating brick as claimed in claim 3 is characterized in that: described cold working grinds for adopting rattler.
5. light heat-insulating brick is characterized in that: described light heat-insulating brick is to adopt the light heat-insulating brick of method processing according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101053763A CN101348364B (en) | 2008-04-29 | 2008-04-29 | Method for producing light heat-insulating brick from sawdust and light heat-insulating brick thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101053763A CN101348364B (en) | 2008-04-29 | 2008-04-29 | Method for producing light heat-insulating brick from sawdust and light heat-insulating brick thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101348364A CN101348364A (en) | 2009-01-21 |
| CN101348364B true CN101348364B (en) | 2010-09-15 |
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| CN2008101053763A Active CN101348364B (en) | 2008-04-29 | 2008-04-29 | Method for producing light heat-insulating brick from sawdust and light heat-insulating brick thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1559985A (en) * | 2004-02-24 | 2005-01-05 | 北京科技大学 | Light fire resisting brick of iolite-mulbite and preparation process thereby |
| CN1762906A (en) * | 2004-10-21 | 2006-04-26 | 宜兴市炉顶密封工程公司耐火保温厂 | Corundum-mullite heat-insulating brick |
| CN1900008A (en) * | 2006-07-24 | 2007-01-24 | 吉林省农业机械研究院 | Method for producing high strenght flyash ceramic sand |
-
2008
- 2008-04-29 CN CN2008101053763A patent/CN101348364B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1559985A (en) * | 2004-02-24 | 2005-01-05 | 北京科技大学 | Light fire resisting brick of iolite-mulbite and preparation process thereby |
| CN1762906A (en) * | 2004-10-21 | 2006-04-26 | 宜兴市炉顶密封工程公司耐火保温厂 | Corundum-mullite heat-insulating brick |
| CN1900008A (en) * | 2006-07-24 | 2007-01-24 | 吉林省农业机械研究院 | Method for producing high strenght flyash ceramic sand |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-330115A 2005.12.02 |
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| CN101348364A (en) | 2009-01-21 |
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Denomination of invention: Method for producing light heat-insulating brick from sawdust and light heat-insulating brick thereof Effective date of registration: 20130723 Granted publication date: 20100915 Pledgee: Industrial Commercial Bank of China Ltd. Beijing Tongzhou branch Pledgor: BEIJING TREND HI-TECH INSULATING MATERIALS Co.,Ltd. Registration number: 2013990000489 |
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Date of cancellation: 20141217 Granted publication date: 20100915 Pledgee: Industrial Commercial Bank of China Ltd. Beijing Tongzhou branch Pledgor: BEIJING TREND HI-TECH INSULATING MATERIALS Co.,Ltd. Registration number: 2013990000489 |
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Address after: 101109 Beijing horse town Huoxian village of Tongzhou District Patentee after: BEIJING TREND TECHNOLOGY Co.,Ltd. Address before: 101109 Beijing horse town Huoxian village of Tongzhou District traudo Beijing tech insulating materials Co Ltd Patentee before: BEIJING TREND HI-TECH INSULATING MATERIALS Co.,Ltd. |
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Effective date of registration: 20230403 Address after: No. 1688, Dongyue Street, Qingyun Economic Development Zone, Qingyun County, Dezhou City, Shandong Province, 253700 Patentee after: Shandong QUANDAO Technology Co.,Ltd. Address before: 101109 Beijing horse town Huoxian village of Tongzhou District Patentee before: BEIJING TREND TECHNOLOGY Co.,Ltd. |