CN102303974A - Wear-resistance high-density silicon brick for coke ovens and preparation process thereof - Google Patents
Wear-resistance high-density silicon brick for coke ovens and preparation process thereof Download PDFInfo
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- CN102303974A CN102303974A CN201110217917A CN201110217917A CN102303974A CN 102303974 A CN102303974 A CN 102303974A CN 201110217917 A CN201110217917 A CN 201110217917A CN 201110217917 A CN201110217917 A CN 201110217917A CN 102303974 A CN102303974 A CN 102303974A
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Abstract
The invention discloses a wear-resistance high-density silicon brick for coke ovens and a preparation process thereof. The high-density silicon brick is prepared from the following raw materials in percentage by weight: 40 to 70 percent of quartz sand particles, 20 to 30 percent of quartz sand powder, 1 to 3 percent of mill scale, 1 to 5 percent of calcium powder, 1 to 3 percent of clay powder, 2 to 5 percent of metal silicon, 1 to 3 percent of rutile, 1 to 5 percent of silicon carbide and 1 to 2 percent of feldspar. In the preparation process of the wear-resistance high-density silicon brick, an obtained formed blank is loaded into a kiln and is sintered at 1,400 to 1,430 DEG C for 24 to 36 hours to form a finished product, the finished product is cooled to normal temperature and the wear-resistance high-density silicon brick product is obtained. The high-temperature sintering process enables the raw materials to produce a synergetic effect, so that the obtained wear-resistance high-density silicon brick product has excellent properties including stable chemical components, high volume density, high wear resistance, high pressure strength, low porosity and long service life, and can be widely used in various large and medium coke ovens.
Description
Technical field
The present invention relates to coke oven with wear-resisting high-density silica brick, be specifically related to the composition of raw materials and the preparation technology thereof of wear-resisting high-density silica brick.
Background technology
Wear-resisting high-density silica brick is one of main basic material of building by laying bricks or stones by coke oven; The dominant direction that coke oven is built in construction by laying bricks or stones is: large-scale, efficient, long-lived, energy-saving and environmental protection.As the main refractory materials of coke furnace building---silica brick, the quality of its quality will directly have influence on the whole result of use of coke oven.Especially furnace wall brick, the furnace bottom at carbonizing chamber of coke oven position are used the silica brick brick; In the coke smelting process; Should stand the high temperature about 1350 ℃; Bear the erosion of various corrosive gasess again; Also require to have good wearability and high density, when bearing the turnover coke to the huge friction property of silica brick.Therefore, study and develop the high silica brick of the good density of a kind of wear resisting property and become new, critical, a very urgent job.
Summary of the invention
The object of the present invention is to provide raw materials for production prescription and the preparation technology thereof of a kind of coke oven with wear-resisting high-density silica brick; Make the wear-resisting high-density silica brick that is obtained have that chemical composition stability, volume density are high, wear resisting property is good, compressive strength is high, void content is low, the good moral character of long service life, can satisfy the requirement of building by laying bricks or stones of various big-and-middle-sized coke ovens.
For reaching said purpose, the present invention has adopted such technical scheme: the consumption of the raw material weight proportioning of wear-resisting high-density silica brick according to the invention is groped to sum up to draw through the contriver in a large number, and the each component consumption all has effect preferably in this scope:
The raw material weight proportioning of wear-resisting high-density silica brick: quartz sand particle 40-70%, quartz sand powder 20-30%, roll scale 1-3%, calcium powder 1-5%, clay powder 1-3%, Pure Silicon Metal 2-5%, rutile 1-3%, silicon carbide 1-5%, feldspar 1-2%;
The granularity of said raw material is 0.02--3mm.
The preparation technology of wear-resisting high-density silica brick: step 1; According to above-mentioned weight proportion, with various raw materials pulverize, mixing, ageing mixture; Step 2, mix that step 1 obtains is pressed into various typing blanks with high tonnage pressing machine, the oven dry of carrying out below 200 ℃ is handled; Step 3, step 2 is obtained the drying and shaping blank kiln of packing into be sintered to finished product at 1400～1430 ℃ * 24～36 hours in the condition, the normal temperature of cooling promptly obtains wear-resisting high-density silicon brick product.
Among the present invention, said quartz sand particle, quartz sand powder are a kind of silicate mineralss of hard, wear-resisting, stable chemical performance, and its essential mineral composition is SiO2.
Roll scale: produce high-content FeO in the rolling process, can reduce the temperature of fusion of dross thing.
Calcium powder is a lime carbonate.
The clay powder has another name called clay powder, and the main body chemical ingredients is a sieve and silica-sesquioxide, has plasticity-.Clay role: be that clay makes casting mud and glaze have suspension and stability; Has associativity simultaneously.
Pure Silicon Metal: Pure Silicon Metal is the product of being smelted in electrothermal oven with coke by quartzy, and the content of principal constituent element silicon is about 98%, and all the other impurity are iron, aluminium, calcium etc.
Rutile: rutile is to be exactly purer titanium dioxide, generally contains titanium dioxide more than 95%, be the important raw mineral materials that refines titanium, but reserves is less in the earth's crust.It has excellent properties such as high temperature resistant, low temperature resistant, corrosion-resistant, high strength, little proportion.
Silicon carbide: be to be that raw material forms through the resistance furnace pyrotic smelting (SiC) with quartz sand, refinery coke (or coal tar), wood chip.Silicon carbide is claimed moissanite again.Utilize silicon carbide to have corrosion-resistant, high temperature resistant, characteristics such as intensity is big, heat conductivility is good, shock resistance.
Feldspar; Be the aluminum silicate mineral of a type of calcic, sodium and potassium.For modal mineral in the earth's crust, in volcanic rock, metamorphosed rock, sedimentogeneous rock, all can occur.
Performance of products: detected result
| Project | Unit | Detected result | |
| SiO 2 | ?％ | 94.5 | |
| Wear resistance | ?Cm 3 | 6～8 | |
| Volume density | ?g/cm 3 | 1.92 | |
| Apparent porosity | ?％ | 17.0 | |
| Compressive strength | ?MPa | 85 | |
| Refractoriness under load | ?℃ | 1665 | |
| Coefficient of thermal expansion (1000 ℃) | ?％ | 1.26 |
Beneficial effect of the present invention: known that by above quartz sand particle, quartz sand powder are a kind of silicate mineralss of hard, wear-resisting, stable chemical performance in the selected raw material, its essential mineral composition is SiO2; Utilize silicon carbide have corrosion-resistant, high temperature resistant, intensity is big, heat conductivility is good, the characteristic of shock resistance etc., has high temperature resistant, low temperature resistant, corrosion-resistant, high-intensity excellent properties in conjunction with rutile; The clay role is that clay makes casting mud and glaze have suspension and stability in addition, has associativity simultaneously; And the adding of other raw material, impel chemical ingredients more stable.Among the preparation technology of said wear-resisting high-density silica brick; The obtain baking typing blank kiln of packing into was sintered to finished product in the condition at 1400～1430 ℃ * 24～36 hours; The normal temperature of cooling promptly obtains wear-resisting high-density silicon brick product; This high-temperature sintering process allows various raw materials produce synergy; The feasible wear-resisting high-density silicon brick product that obtains has chemical composition stability; Volume density is high; Wear resisting property is good; Compressive strength is high; Void content is low; The premium properties of long service life is widely used in various big-and-middle-sized coke ovens.
Basic document: wear-resisting high-density silica brick of the present invention just uses at Handan Iron and Steel Co at present, 9 years work-ing life; In the 8 years work-ing life of Anshan iron and steel plant.And abroad the stove liner of this type with having only 4 years the mean life of refractory brick.
The practical implementation method
Coke oven is with wear-resisting high-density silica brick and preparation technology thereof;
The raw material weight proportioning of wear-resisting high-density silica brick: quartz sand particle 40-70%, quartz sand powder 20-30%, roll scale 1-3%, calcium powder 1-5%, clay powder 1-3%, Pure Silicon Metal 2-5%, rutile 1-3%, silicon carbide 1-5%, feldspar 1-2%;
The granularity of said raw material is 0.02--3mm.
The preparation technology of wear-resisting high-density silica brick is following step: step 1; According to above-mentioned weight proportion, with various raw materials pulverize, mixing, ageing mixture; Step 2, mix that step 1 obtains is pressed into various typing blanks with high tonnage pressing machine, the oven dry of carrying out below 200 ℃ is handled; Step 3, step 2 is obtained the drying and shaping blank kiln of packing into be sintered to finished product at 1400～1430 ℃ * 24～36 hours in the condition, the normal temperature of cooling promptly obtains wear-resisting high-density silicon brick product.
Claims (2)
1. coke oven is with wear-resisting high-density silica brick; It is characterized in that,
The raw material weight proportioning of said wear-resisting high-density silica brick: quartz sand particle 40-70%, quartz sand powder 20-30%, roll scale 1-3%, calcium powder 1-5%, clay powder 1-3%, Pure Silicon Metal 2-5%, rutile 1-3%, silicon carbide 1-5%, feldspar 1-2%; The granularity of said raw material is 0.02--3mm.
According to the said coke oven of claim 1 with wear-resisting high-density silica brick, it is characterized in that the preparation technology of said wear-resisting high-density silica brick is following step: step 1; According to above-mentioned weight proportion, with various raw materials pulverize, mixing, ageing mixture; Step 2, mix that step 1 obtains is pressed into various typing blanks with high tonnage pressing machine, the oven dry of carrying out below 200 ℃ is handled; Step 3, step 2 is obtained the drying and shaping blank kiln of packing into be sintered to finished product at 1400～1430 ℃ * 24～36 hours in the condition, the normal temperature of cooling promptly obtains wear-resisting high-density silicon brick product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110217917A CN102303974A (en) | 2011-08-01 | 2011-08-01 | Wear-resistance high-density silicon brick for coke ovens and preparation process thereof |
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| CN201110217917A CN102303974A (en) | 2011-08-01 | 2011-08-01 | Wear-resistance high-density silicon brick for coke ovens and preparation process thereof |
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| CN102303974A true CN102303974A (en) | 2012-01-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591749A (en) * | 2014-11-12 | 2015-05-06 | 中钢集团耐火材料有限公司 | Superhigh-thermal conductivity silica brick for coke oven charing chamber furnace wall and preparation method thereof |
| CN108892491A (en) * | 2018-07-13 | 2018-11-27 | 贵州紫云月华新材料有限公司 | A kind of silica brick and its manufacturing process |
| CN110592316A (en) * | 2019-09-06 | 2019-12-20 | 洪荣州 | Furnace lining structure of ladle refining furnace |
| CN115894055A (en) * | 2022-12-22 | 2023-04-04 | 郑州通达耐材有限责任公司 | High wear-resistant coke oven silica brick and manufacturing process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792952A (en) * | 2005-11-18 | 2006-06-28 | 郑州华宇耐火材料有限公司 | Composite silicon brick |
| CN101597174A (en) * | 2009-06-29 | 2009-12-09 | 河北理工大学 | A kind of compact silica refractory material and preparation method thereof |
| CN101973771A (en) * | 2010-09-29 | 2011-02-16 | 淄博市鲁中耐火材料有限公司 | Ferrous aluminum and magnesium system refractory raw material and preparation method thereof |
| CN102126866A (en) * | 2011-04-06 | 2011-07-20 | 瑞泰科技股份有限公司 | High-purity silica refractory material and production process thereof |
-
2011
- 2011-08-01 CN CN201110217917A patent/CN102303974A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792952A (en) * | 2005-11-18 | 2006-06-28 | 郑州华宇耐火材料有限公司 | Composite silicon brick |
| CN101597174A (en) * | 2009-06-29 | 2009-12-09 | 河北理工大学 | A kind of compact silica refractory material and preparation method thereof |
| CN101973771A (en) * | 2010-09-29 | 2011-02-16 | 淄博市鲁中耐火材料有限公司 | Ferrous aluminum and magnesium system refractory raw material and preparation method thereof |
| CN102126866A (en) * | 2011-04-06 | 2011-07-20 | 瑞泰科技股份有限公司 | High-purity silica refractory material and production process thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591749A (en) * | 2014-11-12 | 2015-05-06 | 中钢集团耐火材料有限公司 | Superhigh-thermal conductivity silica brick for coke oven charing chamber furnace wall and preparation method thereof |
| CN104591749B (en) * | 2014-11-12 | 2016-06-08 | 中钢集团耐火材料有限公司 | A kind of super-high heat-conductive silica brick and preparation method thereof for oven wall of coke oven carbonization chamber |
| CN108892491A (en) * | 2018-07-13 | 2018-11-27 | 贵州紫云月华新材料有限公司 | A kind of silica brick and its manufacturing process |
| CN110592316A (en) * | 2019-09-06 | 2019-12-20 | 洪荣州 | Furnace lining structure of ladle refining furnace |
| CN115894055A (en) * | 2022-12-22 | 2023-04-04 | 郑州通达耐材有限责任公司 | High wear-resistant coke oven silica brick and manufacturing process thereof |
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Application publication date: 20120104 |