CN106766922A - The lightweight configuration structure of refractory brick in cement kiln - Google Patents
The lightweight configuration structure of refractory brick in cement kiln Download PDFInfo
- Publication number
- CN106766922A CN106766922A CN201611093935.4A CN201611093935A CN106766922A CN 106766922 A CN106766922 A CN 106766922A CN 201611093935 A CN201611093935 A CN 201611093935A CN 106766922 A CN106766922 A CN 106766922A
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- brick
- kiln
- refractory
- cement kiln
- configuration structure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/06—Composite bricks or blocks, e.g. panels, modules
- F27D1/063—Individual composite bricks or blocks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The present invention is a kind of lightweight configuration structure of refractory brick in cement kiln, it is characterised in that the lightweight configuration structure of refractory brick is as follows to kiln tail structure from kilneye in the cement kiln for being used：Kilneye castable → high wear-resistant brick → spinel brick → magnesium grey iron block → silicon mullite red brick → siliceous mullite brick → bottom pouring material.Beneficial effects of the present invention：1st, lightweight refractory material has high intensity, thermal shock high, low heat conduction and certain anti-medium erosiveness.2nd, about 2 tons of standard coal can be saved daily.3rd, 2# wheel belt position service condition is improved.4th, chromium ion pollution sources are eliminated, meets sustainable development requirement.5th, improve yield and reduce the refractory brick cost of overhaul.
Description
Technical field
The present invention relates to cement rotary kiln, more particularly, to a kind of lightweight configuration structure of refractory brick in cement kiln.
Background technology
At present, in existing cement kiln refractory brick configuration institute behaviour in service：As shown in Fig. 21, one is due to being used in kiln
Brick variety protection is more, it appears mixed and disorderly, both increased the management of usually refractory brick, also increases management cost；Two is that brick makes in kiln
Synchronous effect, typically only ten months even shorter service life of preceding kilneye and preceding intermediate zone are not reached with the life-span.Kilneye is poured
The time between overhaul of material feeding, magnesite-chrome brick, spinel brick and anti-strip brick is general at 4~6 months, so, whole kiln refractory brick inspection
Frequency repair rate is 2~3 times or so/year, and indivedual kilns increased repair time and labour intensity, and increase up to 3~4 times or so/year
Clinker cost, while the useless brick containing chromium produces certain hidden danger to environment.
There is subject matter in clinkering zone and preceding intermediate zone in the 2, existing configuration；
1. frangible influence causes consumption uneven when the shortcoming of spinel brick is construction；Thermal conductivity factor is larger simultaneously, makes No. 2 wheel belt attached
Nearly barrel temperature is higher, and certain hidden danger is caused to equipment operation.
2. the operation of equipment is influenceed：Magnesite-chrome brick or spinel brick thermal conductivity factor are big（≥2.7W/m·K）So that outside kiln cylinder body
Wall temperature is higher（About at 380 DEG C or so, can be up to 420 DEG C during high temperature）, easily expanded by heating causes kiln middle part support roller to bear pressure
Power is larger, and Supporting annulus temperature raises deformation, and especially phase or summer bring larger hidden danger to the normal operation of equipment after use；
3. energy-saving effect is undesirable：Magnesite-chrome brick or spinel brick thermal conductivity factor are big（≥2.7W/m·K）So that the outer wall temperature of kiln cylinder body
Spend (typically more than 380 DEG C) higher, increased the unit cost of clinker.
4. it is unfavorable for cost-effective：Because magnesite-chrome brick or spinelle proportion are larger（2.9~3.0g/cm3）, compare silicon not
Common brick will weight 10%（1.35 t/m）, not only it is unfavorable for protection kiln cylinder body but also increased cost payout.
5. it is unfavorable for storing and reducing administration fee：Magnesite-chrome brick, spinel brick belong to basic matterial, in southern area pole
Easy moisture absorption, internal crystalline phase conversion, causes efflorescence, the aquation of brick, and gently then influence is used, heavy then lose use value, gives storage pipe
Reason brings very big pressure；And magnesite-chrome brick, spinel brick manufacturing cycle it is long, rationally standby brick difficulty it is big, take more fund.
The content of the invention
It is an object of the invention to provide a kind of lightweight configuration structure of refractory brick in cement kiln, fire resisting in optimization kiln is solved
Brick design structure and description of materials, improve material refractoriness, reduce barrel temperature, increase the service life, and prevent security incident from sending out
Problem that is raw and reducing production cost.
The technical solution adopted for the present invention to solve the technical problems is：The lightweight configuration of refractory brick in a kind of cement kiln
Structure, it is characterised in that the lightweight configuration structure of refractory brick is as follows to kiln tail structure from kilneye in the cement kiln for being used：
Kilneye castable → high wear-resistant brick → spinel brick → magnesium grey iron block → silicon mullite red brick → siliceous mullite brick → bottom pouring material.
Beneficial effects of the present invention：1st, lightweight refractory material has high intensity, thermal shock high, low heat conduction and certain anti-Jie
Matter erosiveness, it is tried out in the success of cement rotary kiln and demonstrates the light-weighted feasibility of refractory material.Conch cement more than 100
Use of the platform rotary kiln over 10 years fully demonstrates this point；
2nd, 5000t/d production lines, when kiln shell temperature can reduce by 70 DEG C, can save about 2 tons of standard coal, if cement kiln daily
Running rate presses 90%（329 days）Calculate, then every kiln can save 658 tons of coal of mark every year, be roughly equal to 330,000 yuan, cement is returned at present in the whole nation
Rotary kiln amounts to more than 1800 bars, and its economic effect is difficult to estimate.
3rd, 2# wheel belt position service condition is improved：Be conducive to the protection of equipment：Siliceous mullite brick thermal conductivity factor is small（1.7W/m·
K）So that kiln cylinder body outside wall temperature is relatively low（About at 320 DEG C or so）, smaller, Supporting annulus temperature that kiln middle part support roller bears pressure
It is relatively low, it is unlikely to deform, be conducive to the normal operation of equipment；
4th, chromium ion pollution sources are eliminated, meets sustainable development requirement；
5th, improve yield and reduce the refractory brick cost of overhaul：It is every through budgetary estimate due to realizing 2 overhauls in 3 years compared with 1 overhaul in a year
830,000 yuan of direct cost of maintenance can be saved year；Again due to significantly extending the usage cycles of kiln brick, so that maintenance number of times is reduced,
The running rate of kiln is improved, yield and cogeneration is realized high yield, stabilization, 1,100,000 yuan are generated profit more through budgetary estimate is every year.
Below with reference to drawings and Examples, the present invention is described in detail.
Brief description of the drawings
Fig. 1 is the organigram of the configuration structure of refractory brick in existing cement kiln.
Fig. 2 is the organigram of the lightweight configuration structure of refractory brick in cement kiln of the invention.
Specific embodiment
Embodiment 1, as shown in Fig. 2 in a kind of cement kiln refractory brick lightweight configuration structure, it is characterised in that：Used
The lightweight configuration structure of refractory brick is as follows to kiln tail structure from kilneye in cement kiln：Kilneye castable → high wear-resistant brick → point
Spar brick → magnesium grey iron block → silicon mullite red brick → siliceous mullite brick → bottom pouring material.
The performance comparison of various refractory materials.（See the table below）
To make each section of refractory material synchronously be used on whole piece kiln, extend the service life of refractory material, Jian An companies and the country
Substantial amounts of research has been done and using tracking work by outer some professional refractory material manufacturers, have developed with more technical advantage
The series such as substitute products siliceous mullite brick, while with international well-known refractory brick manufacturer（Thunderous method and Ao Mei companies）Cooperation success
Use Chrome-free（Dolomite, pure magnesia brick and mafic spinel brick）Or low chromium firebrick；With domestic fire resisting company in conch part kiln
Intermediate zone has successfully used siliceous mullite brick afterwards, has reached the using effect of more than 18 months, and overall performance is better than spinel brick,
Further reasonably optimizing configuration to whole piece cement rotary kiln refractory material is used, and the existing preparation structure of Fig. 1 " pour into a mould by bottom
Material → high wear-resistant brick → MS2T magnesia-spinel bricks → MS1C magnesia-spinel bricks → MS4TC magnesia-spinel bricks → silicon mullite red brick → silicon
Not brick → sealing castable." new improvement has been configured with to whole piece cement convolution kiln refractory material, accomplish to use brick in kiln
Optimized varieties（Two kinds of main brick）, whole piece cement kiln refractory material is reached with 3 years for the cycle carries out maintenance management, realize 3 years
Secondary overhaul target, increases substantially the cycle of operation of kiln, has both simplified refractory material management program, production is reduced again and is managed
Reason cost, while reaching Trend of Chrome-free environmental requirement again.
Silicon mullite red brick, 42-73.2 rice siliceous mullite bricks are used at 34-42 meters simultaneously.Feature is wear-resisting, erosion resisting is excellent, strong
High, lightweight, the low heat conduction of degree.
With a kind of difference of the patent application of the cylinder lining of the cement rotary kiln for producing 5000 tons daily：In the modeling of 30-40 rice
Property mutually low heat conduction siliceous mullite brick, 40-55 rice siliceous mullite bricks, 55-72 rice Alkali resistant bricks.In embodiment：34-42 rice silicon mullite red bricks.
Silicon mullite red brick adds andalusite, greatly improves the resistance to elevated temperatures of siliceous mullite brick.55-72 rice siliceous mullite bricks, it is its resistant to corrosion, resistance to
Mill, resistance to elevated temperatures are due to Alkali resistant brick.
Embodiment above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row is limited, and on the premise of design spirit of the present invention is not departed from, this area ordinary skill technical staff is to technical side of the invention
Various modifications and improvement that case is made, all should fall into the protection domain of claims of the present invention determination.
Part that the present invention does not relate to is same as the prior art or can be realized using prior art.
Claims (1)
1. in a kind of cement kiln refractory brick lightweight configuration structure, it is characterised in that refractory brick in the cement kiln for being used
Lightweight configuration structure is as follows to kiln tail structure from kilneye：Kilneye castable → high wear-resistant brick → spinel brick → magnesium grey iron block →
Silicon mullite red brick → siliceous mullite brick → bottom pouring material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093935.4A CN106766922A (en) | 2016-12-02 | 2016-12-02 | The lightweight configuration structure of refractory brick in cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093935.4A CN106766922A (en) | 2016-12-02 | 2016-12-02 | The lightweight configuration structure of refractory brick in cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106766922A true CN106766922A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611093935.4A Pending CN106766922A (en) | 2016-12-02 | 2016-12-02 | The lightweight configuration structure of refractory brick in cement kiln |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419026A (en) * | 1973-02-28 | 1975-12-24 | Williamson Ltd Cliff | Refractory bricks |
| CN103833388A (en) * | 2012-12-04 | 2014-06-04 | 江苏顺星耐火科技有限公司 | High-wear-resistance pleonaste brick and preparation method thereof |
| CN104634096A (en) * | 2015-02-14 | 2015-05-20 | 安徽芜湖海螺建筑安装工程有限责任公司 | Chrome-free configuration structure of inner kiln refractory material of rotary cement kiln |
-
2016
- 2016-12-02 CN CN201611093935.4A patent/CN106766922A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419026A (en) * | 1973-02-28 | 1975-12-24 | Williamson Ltd Cliff | Refractory bricks |
| CN103833388A (en) * | 2012-12-04 | 2014-06-04 | 江苏顺星耐火科技有限公司 | High-wear-resistance pleonaste brick and preparation method thereof |
| CN104634096A (en) * | 2015-02-14 | 2015-05-20 | 安徽芜湖海螺建筑安装工程有限责任公司 | Chrome-free configuration structure of inner kiln refractory material of rotary cement kiln |
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Application publication date: 20170531 |