CN1321620A - Chromeless basic brick and its production process - Google Patents
Chromeless basic brick and its production process Download PDFInfo
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- CN1321620A CN1321620A CN 01129203 CN01129203A CN1321620A CN 1321620 A CN1321620 A CN 1321620A CN 01129203 CN01129203 CN 01129203 CN 01129203 A CN01129203 A CN 01129203A CN 1321620 A CN1321620 A CN 1321620A
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- zirconium matter
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Abstract
The present invention relates to a refractory material and its production process. It uses 75-99% of high-purity magnesite clinker and 10-25% of high-purity spinelle sand, and adds the zircon additive and binding agent to prepare brick material, and adopts semi-dry pressing process and baking process at 1700-1800 deg.C so as to obtain the invented refractory brick with excellent high-temp. property, excellent thermal shock stability and resistance to corrosion of cement clinker and alkali and salt in the cement kiln so that it can meet the severe usage condition of high-temp. zone in large-size cement rotary kiln, can be used in the high-temp. zone of cement rotary kiln instead of magnesite-chrome refractory brick which brings along chrome pollution. Said invented brick also can be used in other high-temp. industrial kiln and furnace.
Description
The present invention relates to a kind of Chromeless basic brick and production technique thereof, belong to fire resisting material field.
At present cement rotary kiln thermal zone with refractory brick based on magchrome refractory, the residual brick that in use reaches after the use because it contains chromium can produce pollution of chromium, at cement kiln high-temperature band kliner coating unstable region, the thermal stresses effect in addition of washing away because of erosion of the alkali salt in the kiln and cement clinker often causes the magchrome refractory early failure.
The object of the invention is to develop a kind of Chromeless basic brick, pollution of chromium can not take place in the thermal zone use of cement rotary kiln, and there is not the pollution of chromium problem in the residual brick after the use yet.Alkali salt corrodes in water-fast mud grog and the cement kiln, has good thermal shock resistance and excellent high-temperature behavior, for the cement kiln high-temperature band provides a kind of green alkaline refractory materials, and the running life of prolongation rotary kiln.Adopt high pure raw material, Chromeless basic brick of the present invention has excellent high-temperature behavior; Add zirconium matter additive, improve the thermal shock resistance of Chromeless basic brick.
It is main raw material that the present invention adopts highly-purity magnesite and high-purity spinel sand, and additional zirconium matter additive and wedding agent are made into the brickmaking material, and brickmaking material proportioning is:
Highly-purity magnesite 75～90%, wherein MgO content is 95.0～98.0%; High-purity spinel sand 10～25%, wherein MgO+Al
2O
3Content is 95.0～99.0%.
Additional zirconium matter additive≤5% adds wedding agent 3～5%
Aggregate accounts for 50～75% in the described brickmaking material; Powder accounts for 25～50%; Aggregate size≤5mm, powder fineness≤0.09mm, zirconium matter additive granularity≤1mm, wedding agent is a lignosulfite.Described zirconium matter additive ZrO
2Content should be more than or equal to 85%
By above-mentioned composition requirement, the present invention prepares back adding wedding agent with aggregate and puddles when producing, add powder and zirconium matter additive again, puddle even later half dry pressing mechanical pressing, formed green brick is dried under 80～100 ℃ of temperature, burns till by 1700～1800 ℃ and makes Chromeless basic brick of the present invention.This Chromeless basic brick volume density is 2.90～3.00g/cm
3, cold crushing strength 60～90MPa, loading softening begin temperature greater than 1650 ℃, and 1100 ℃ of water-cooleds of thermal shock resistance are greater than 10 times.
Adopt high pure raw material, Chromeless basic brick of the present invention has excellent high-temperature behavior; Add zirconium matter additive, improve the thermal shock resistance of Chromeless basic brick.Product thermal shock resistance of the present invention is good, and the alkali salt erosion performance is good in resisting cement clinker and the cement kiln.Being applied to the cement kiln high-temperature band, can avoiding pollution of chromium, improve the cement rotary kiln operation factor, is the thermal zone chromium basic brick ideal equivalent material that contains of large-scale cement rotary kiln, and the present invention can also be used for other hot industry kilns.
Embodiment 1:
Aggregate 70%, wherein the highly-purity magnesite aggregate 60%, high-purity spinel sand aggregate 10%;
Powder 30%, wherein the highly-purity magnesite powder 20%, high-purity spinel sand powder 10%;
Additional zirconium matter additive desilicated zirconia 2.5%;
Add lignosulfite 3.5%
Highly-purity magnesite chemical ingredients: MgO:97.10%, SiO
2: 0.95, CaO:1.2%
High-purity spinel sand chemical ingredients: MgO:46.9%, Al
2O
3: 51.5%
Zirconium matter additive desilicated zirconia: ZrO
2: 86.4%
The critical particle diameter of aggregate is 5mm, powder fineness≤0.09mm, and zirconium matter additive desilicated zirconia fineness≤0.5mm, used wedding agent is a lignosulfite.
By above-mentioned composition requirement, earlier aggregate is prepared, adding wedding agent puddles evenly, adding zirconium matter additive desilicated zirconia and powder then stirs, puddle evenly later half dry pressure formed, the moulding adobe is dry under 90 ℃ of temperature, and 1750 ℃ of temperature are burnt till in hyperthermia tunnel Kiln, make Chromeless basic brick of the present invention.
This Chromeless basic brick volume density is 2.97g/cm
3, cold crushing strength is 74MPa, and loading softening begins 1680 ℃ of temperature, and 1100 ℃ of water-cooleds of thermal shock resistance are above 12 times.
Embodiment 2:
Aggregate 65%, wherein the highly-purity magnesite aggregate 57%, high-purity spinel sand aggregate 8%;
Powder 35%, wherein the highly-purity magnesite powder 28%, high-purity spinel sand powder 7%;
Additional zirconium matter additive desilicated zirconia 3.5%;
Add wedding agent 4%
Highly-purity magnesite chemical ingredients: MgO:97.10%, SiO
2: 0.95, CaO:1.2%
High-purity spinel sand chemical ingredients: MgO:46.9%, Al
2O
3: 51.5%
Zirconium matter additive desilicated zirconia: ZrO
2: 90.5%
The critical particle diameter of aggregate is 5mm, powder fineness≤0.09mm, and zirconium matter additive desilicated zirconia fineness≤0.5mm, used wedding agent is a lignosulfite.
By above-mentioned composition requirement, earlier aggregate is prepared, adding wedding agent puddles evenly, adding zirconium matter additive and powder then stirs, puddle evenly later half dry pressure formed, the moulding adobe is dry under 90 ℃ of temperature, and 1780 ℃ of temperature are burnt till in hyperthermia tunnel Kiln, make Chromeless basic brick of the present invention.
This Chromeless basic brick volume density is 3.00g/cm
3, cold crushing strength is 80MPa, and loading softening begins 1700 ℃ of temperature, and 1100 ℃ of water-cooleds of thermal shock resistance are above 15 times.
Claims (2)
1, a kind of Chromeless basic brick, it is characterized in that: the batching of described brick is: highly-purity magnesite 75～90%, high-purity spinel sand 10～25%, additional zirconium matter additive≤5%, add lignosulfite 3～5%, the content of MgO is 95～98% in the wherein said highly-purity magnesite, MgO+Al in the described high-purity spinel sand
2O
3Content be 95～99%, the ZrO of described zirconium matter additive
2Content 〉=85%; Aggregate accounts for 50～75% in the above-mentioned batching, and powder accounts for 25～50%, aggregate size≤5mm, powder fineness≤0.09mm, zirconium matter additive granularity≤1mm.
2, a kind of production technique of making the described Chromeless basic brick of claim 1, it is characterized in that: the aggregate in the described batching is prepared back adding wedding agent puddle, add powder and zirconium matter additive again, puddle even later half dry pressing mechanical pressing, formed green brick is dried under 80～100 ℃ of temperature, burns till by 1700～1800 ℃ again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011292032A CN1151993C (en) | 2001-06-14 | 2001-06-14 | Chromeless basic brick and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011292032A CN1151993C (en) | 2001-06-14 | 2001-06-14 | Chromeless basic brick and its production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1321620A true CN1321620A (en) | 2001-11-14 |
| CN1151993C CN1151993C (en) | 2004-06-02 |
Family
ID=4668995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011292032A Expired - Lifetime CN1151993C (en) | 2001-06-14 | 2001-06-14 | Chromeless basic brick and its production process |
Country Status (1)
| Country | Link |
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| CN (1) | CN1151993C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372808C (en) * | 2006-04-18 | 2008-03-05 | 中国建筑材料科学研究院大石桥镁砖厂 | Making process of zirconium-containing magnesia brick |
| CN101475383B (en) * | 2009-01-21 | 2012-03-07 | 张培庆 | Kiln alkaline brick for producing vanadium nitrogen alloy and method for producing the same |
| CN101712554B (en) * | 2009-10-28 | 2012-04-04 | 郑州真金耐火材料有限责任公司 | Production method of magnesium-aluminum spinel bricks |
| CN103214249A (en) * | 2012-01-24 | 2013-07-24 | 黑崎播磨株式会社 | Basic brick |
| CN103819207A (en) * | 2013-12-05 | 2014-05-28 | 武汉钢铁(集团)公司 | Chrome-free brick for RH (Ruhrstahl Heraeus) furnace vacuum chamber and preparation method of chrome-free brick |
| CN109996772A (en) * | 2016-10-27 | 2019-07-09 | 黑崎播磨株式会社 | Magnesia carbon brick and its manufacturing method |
-
2001
- 2001-06-14 CN CNB011292032A patent/CN1151993C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100372808C (en) * | 2006-04-18 | 2008-03-05 | 中国建筑材料科学研究院大石桥镁砖厂 | Making process of zirconium-containing magnesia brick |
| CN101475383B (en) * | 2009-01-21 | 2012-03-07 | 张培庆 | Kiln alkaline brick for producing vanadium nitrogen alloy and method for producing the same |
| CN101712554B (en) * | 2009-10-28 | 2012-04-04 | 郑州真金耐火材料有限责任公司 | Production method of magnesium-aluminum spinel bricks |
| CN103214249A (en) * | 2012-01-24 | 2013-07-24 | 黑崎播磨株式会社 | Basic brick |
| CN103819207A (en) * | 2013-12-05 | 2014-05-28 | 武汉钢铁(集团)公司 | Chrome-free brick for RH (Ruhrstahl Heraeus) furnace vacuum chamber and preparation method of chrome-free brick |
| CN103819207B (en) * | 2013-12-05 | 2016-01-13 | 武汉钢铁(集团)公司 | A kind of RH stove vacuum chamber chromium-free brick and preparation method thereof |
| CN109996772A (en) * | 2016-10-27 | 2019-07-09 | 黑崎播磨株式会社 | Magnesia carbon brick and its manufacturing method |
| CN109996772B (en) * | 2016-10-27 | 2021-05-18 | 黑崎播磨株式会社 | Magnesia carbon brick and its making process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1151993C (en) | 2004-06-02 |
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Owner name: RUITAI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING RUITAI HIGH-TEMP MATERIAL SCIENCE AND TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: Beijing, Chaoyang District, Guanzhuang Patentee after: Ruitai Technology Co., Ltd. Address before: Beijing, Chaoyang District, Guanzhuang Patentee before: Beijing Ruitai High-Temp Material Science and Technology Co., Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Henan Ruitai Refractory Technology Co., Ltd. Assignor: Ruitai Technology Co., Ltd. Contract fulfillment period: 2009.11.10 to 2019.11.10 Contract record no.: 2009410000258 Denomination of invention: Chromeless basic brick and its production process Granted publication date: 20040602 License type: Exclusive license Record date: 20091117 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.10 TO 2019.11.10; CHANGE OF CONTRACT Name of requester: HENAN RUITAI REFRACTORY MATERIAL SCIENCE CO., LTD. Effective date: 20091117 |
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| CX01 | Expiry of patent term |
Granted publication date: 20040602 |