CN104163646A - Method for manufacturing anti-erosion alumino-silicon-carbide brick for ferro-nickel rotary kiln - Google Patents
Method for manufacturing anti-erosion alumino-silicon-carbide brick for ferro-nickel rotary kiln Download PDFInfo
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- CN104163646A CN104163646A CN201410383384.XA CN201410383384A CN104163646A CN 104163646 A CN104163646 A CN 104163646A CN 201410383384 A CN201410383384 A CN 201410383384A CN 104163646 A CN104163646 A CN 104163646A
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Abstract
The invention discloses a method for manufacturing an anti-erosion alumino-silicon-carbide brick for a ferro-nickel rotary kiln. The anti-erosion alumino-silicon-carbide brick is prepared from the following raw materials in percentage by weight: 40-80% of bauxite or corundum, 10-40% of silicon carbide, 5-10% of bonding clay and 1-15% of calcium aluminum titanate. The method comprises the following steps: weighing 40-80% of bauxite or corundum, 10-40% of silicon carbide, 5-10% of bonding clay and 1-15% of calcium aluminum titanate respectively, adding an appropriate amount of lignin as a bonding agent to uniformly mix the raw materials, and after compression molding, drying at 60-200 DEG C; and then, burning for 2-12 hours at a temperature of 1300-1600 DEG C to obtain a finished product brick body. The method has the advantage that the alumino-silicon-carbide finished product brick manufactured by adopting the low-cost raw materials and a simple machining process not only has excellent thermal shock resistance and oxidization resistance, but also has excellent erosion resistance. By being used in a transition zone of the ferro-nickel rotary kiln, the service life of the ferro-nickel rotary kiln can be prolonged by at least three months.
Description
Technical field
The present invention relates to ferronickel revolution kiln refractory, especially relate to the making method of a kind of ferronickel rotary kiln anti-erosion aluminum silicon carbide brick.
Background technology
At present, ferronickel rotary kiln refractory materials used and configuration thereof are to use cement rotary kiln refractory materials substantially, but be very different in cement material and Rhometal smelting process, the erosional competency of material state, smelting temperature, material etc. all has larger difference, cause like this work-ing life of the resistance to material of ferronickel rotary kiln of using cement kiln refractory shorter, had a strong impact on operation and the production cost of nickel-iron smelting.
Although the aluminum silicon carbide brick using on ferronickel rotary kiln has good wear resisting property, but its anti-scour property is very poor, through producer, small-scale contrast and experiment shows, the erosion-resisting characteristics of aluminum silicon carbide brick is nothing like magnesia-alumina-chromia brick, magnalium grey iron block and magnalium zirconia block, in condition test, other brick only has microetching or there is no erosion, but the erosion of aluminum silicon carbide brick is up to 37.8%.People are by adding additive to improve antioxidant property and the thermal shock resistance of aluminum silicon carbide brick at present, but in ferronickel rotary kiln is excessively with, except requiring aluminum silicon carbide brick to meet anti-oxidant and thermal shock resistance, the quality of erosion-resisting characteristics has become restrict the key factor in its work-ing life or even determine that it can be used for principal element herein.
Summary of the invention
The object of the present invention is to provide the making method of a kind of ferronickel rotary kiln anti-erosion aluminum silicon carbide brick.
For achieving the above object, the present invention can take following technical proposals:
The making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln of the present invention, it is to be made by following weight percent proportioning and method by bauxite raw material or corundum, silicon carbide, associativity clay, titanium calcium aluminate:
After it being weighed respectively in the ratio of bauxitic clay or corundum 40 ~ 80%, silicon carbide 10 ~ 40%, associativity clay 5 ~ 10%, titanium calcium aluminate 1 ~ 15%, adding appropriate xylogen to make bonding agent is mixed, after compression moulding, through 60 ~ 200 DEG C dry, then at 1300 ~ 1600 DEG C of temperature, fire and can obtain finished bricks body in 2 ~ 12 hours.
In described bauxitic clay or corundum raw material, the aggregate 70% of granularity 0.5 ~ 5mm, granularity >=180 object fine powder 30%.
In described sic raw material, the aggregate 60% of granularity 0.5 ~ 5mm, granularity >=180 object fine powder 40%.
Granularity >=180 order of described associativity clay.
In described titanium calcium aluminate raw material, the aggregate 40% of granularity 0.5 ~ 5mm, granularity >=180 object fine powder 60%.
The physical and chemical index of the finished product aluminum silicon carbide brick that after tested, the present invention makes is:
。
The invention has the advantages that the aluminium silicon carbide finished bricks that adopts low cost raw material and simple complete processing to manufacture, not only there is excellent thermal shock resistance and oxidation-resistance, possess good resistance to fouling simultaneously, excessively in band, used at ferronickel rotary kiln, can increase the service life at least three months.
" titanium calcium aluminate " material using in aluminum silicon carbide brick of the present invention is a kind of waste residue producing while smelting ferro-titanium, and one ton of ferrotianium of every production will produce the titanium calcium aluminate of 1.2 ~ 1.3 tons.The main component of aluminium titanates calcium is 66.92% Al
2o
3, 12.16% TiO
2, 6.62% CaO, 6.65% MgO, 5.15% SiO
2and a small amount of iron.In aluminum silicon carbide brick preparation process, the principal crystalline phase mullite of aluminum silicon carbide brick, between corundum and silicon carbide, form titanium aluminic acid-mullite paracrystalline phase, trichroite phase and a small amount of CA6 high viscosity thing phase, the low expansion of titanium aluminic acid-mullite and high resistance to fouling paracrystalline phase material are filled in the pore of trichroite, the resistance to fouling of finished bricks body is improved greatly, and the thermal shock resistance of trichroite itself is just comparatively excellent, a small amount of high viscosity CA6 is conducive to again stop the Quick Extended of crackle mutually, play shock absorption, simultaneously high viscosity liquid phase when high temperature is beneficial to again sealed porosity, improve the antioxidant property of silicon carbide.So the aluminum silicon carbide brick that the present invention manufactures, because of good erosion-resisting characteristics, is difficult for because ring formation affects normal production while making it to use, extended the work-ing life that ferronickel rotary kiln is excessively with in ferronickel rotary kiln.
Meanwhile, this is again a kind of by efficient solid waste (titanium calcium aluminate) effective means of utilizing, and has not only reduced the cost of aluminum silicon carbide brick material therefor, in improving aluminum silicon carbide brick performance, has consumed again solid waste.
Embodiment
Embodiment 1:
The making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln of the present invention, it is by the wherein aggregate 70% of granularity 0.5 ~ 5mm of bauxite raw material 62%(, granularity >=180 object fine powder 30%), the aggregate 60% of silicon carbide 20%(granularity 0.5 ~ 5mm, granularity >=180 object fine powder 40%), granularity >=180 object associativity clay 10%, the aggregate of titanium calcium aluminate 8%(granularity 0.5 ~ 5mm is 40%, granularity >=180 object fine powder 60%) after mixture, the xylogen that adds material total amount 3 ~ 6% is made bonding agent mixed sintering and is formed: first all materials are mixed to rear compression moulding, dry through 105 DEG C, then at 1550 DEG C of temperature, fire and within 4 hours, can obtain ferronickel rotary kiln and be excessively with and use anti-erosion aluminum silicon carbide brick.
Embodiment 2:
The making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln of the present invention, it is by the wherein aggregate 70% of granularity 0.5 ~ 5mm of raw material corundum 72%(, granularity >=180 object fine powder 30%), the aggregate of silicon carbide 15%(granularity 0.5 ~ 5mm is 60%, granularity >=180 object fine powder 40%), granularity >=180 object associativity clay 8%, the aggregate of titanium calcium aluminate 5%(granularity 0.5 ~ 5mm is 40%, granularity >=180 object fine powder 60%) after mixture, the xylogen that adds material total amount 3 ~ 6% is made bonding agent mixed sintering and is formed: first all materials are mixed to rear compression moulding, dry through 110 DEG C, then at 1450 DEG C of temperature, fire and within 8 hours, can obtain ferronickel rotary kiln and be excessively with and use anti-erosion aluminum silicon carbide brick.
Embodiment 3:
The making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln of the present invention, it is by the wherein aggregate 70% of granularity 0.5 ~ 5mm of bauxite raw material 42%(, granularity >=180 object fine powder 30%), corundum 20%(is the aggregate 70% of granularity 0.5 ~ 5mm wherein, granularity >=180 object fine powder 30%), the aggregate of silicon carbide 25%(granularity 0.5 ~ 5mm is 60%, granularity >=180 object fine powder 40%), granularity >=180 object associativity clay 9%, the aggregate of titanium calcium aluminate 4%(granularity 0.5 ~ 5mm is 40%, granularity >=180 object fine powder 60%) after mixture, the xylogen that adds material total amount 3 ~ 6% is made bonding agent mixed sintering and is formed: first all materials are mixed to rear compression moulding, dry through 150 DEG C, then at 1500 DEG C of temperature, fire and within 6 hours, can obtain ferronickel rotary kiln and be excessively with and use anti-erosion aluminum silicon carbide brick.
Embodiment 4:
The making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln of the present invention, it is by bauxite raw material or the wherein aggregate 70% of granularity 0.5 ~ 5mm of corundum 40%(, granularity >=180 object fine powder 30%), the aggregate of silicon carbide 40%(granularity 0.5 ~ 5mm is 60%, granularity >=180 object fine powder 40%), granularity >=180 object associativity clay 5%, the aggregate of titanium calcium aluminate 15%(granularity 0.5 ~ 5mm is 40%, granularity >=180 object fine powder 60%) after mixture, the xylogen that adds material total amount 3 ~ 6% is made bonding agent mixed sintering and is formed: first all materials are mixed to rear compression moulding, dry through 60 DEG C, then at 1600 DEG C of temperature, fire and within 2 hours, can obtain ferronickel rotary kiln and be excessively with and use anti-erosion aluminum silicon carbide brick.
Embodiment 5:
The making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln of the present invention, it is by bauxite raw material or the wherein aggregate 70% of granularity 0.5 ~ 5mm of corundum 80%(, granularity >=180 object fine powder 30%), the aggregate of silicon carbide 10%(granularity 0.5 ~ 5mm is 60%, granularity >=180 object fine powder 40%), granularity >=180 object associativity clay 6%, the aggregate of titanium calcium aluminate 4%(granularity 0.5 ~ 5mm is 40%, granularity >=180 object fine powder 60%) after mixture, the xylogen that adds material total amount 3 ~ 6% is made bonding agent mixed sintering and is formed: first all materials are mixed to rear compression moulding, dry through 200 DEG C, then at 1300 DEG C of temperature, fire and within 12 hours, can obtain ferronickel rotary kiln and be excessively with and use anti-erosion aluminum silicon carbide brick.
Claims (5)
1. a making method for anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln, is characterized in that: it is to be made by following weight percent proportioning and method by bauxite raw material or corundum, silicon carbide, associativity clay, titanium calcium aluminate:
After it being weighed respectively in the ratio of bauxitic clay or corundum 40 ~ 80%, silicon carbide 10 ~ 40%, associativity clay 5 ~ 10%, titanium calcium aluminate 1 ~ 15%, adding appropriate xylogen to make bonding agent is mixed, after compression moulding, through 60 ~ 200 DEG C dry, then at 1300 ~ 1600 DEG C of temperature, fire and can obtain finished bricks body in 2 ~ 12 hours.
2. the making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln according to claim 1, is characterized in that: in described bauxitic clay or corundum raw material, and the aggregate 70% of granularity 0.5 ~ 5mm, granularity >=180 object fine powder 30%.
3. the making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln according to claim 1, is characterized in that: in described sic raw material, and the aggregate 60% of granularity 0.5 ~ 5mm, granularity >=180 object fine powder 40%.
4. the making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln according to claim 1, is characterized in that: granularity >=180 order of described associativity clay.
5. the making method of anti-erosion aluminum silicon carbide brick for ferronickel rotary kiln according to claim 1, is characterized in that: in described titanium calcium aluminate raw material, and the aggregate 40% of granularity 0.5 ~ 5mm, granularity >=180 object fine powder 60%.
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| CN201410383384.XA CN104163646A (en) | 2014-08-06 | 2014-08-06 | Method for manufacturing anti-erosion alumino-silicon-carbide brick for ferro-nickel rotary kiln |
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| CN201410383384.XA CN104163646A (en) | 2014-08-06 | 2014-08-06 | Method for manufacturing anti-erosion alumino-silicon-carbide brick for ferro-nickel rotary kiln |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609872A (en) * | 2015-01-12 | 2015-05-13 | 马鞍山利尔开元新材料有限公司 | Titanium-containing calcium aluminate-high alumina bauxite modified refractory material, as well as preparation method and application thereof |
| CN105036774A (en) * | 2015-08-04 | 2015-11-11 | 武汉科技大学 | Calcium titanium-aluminate prefabricated part for vanadium smelting reverberatory furnace lining and preparation method thereof |
| CN106747341A (en) * | 2016-12-02 | 2017-05-31 | 郑州东方科技耐火材料有限公司 | A kind of carbon roasting furnace preparation method of low creep energy-conserving and environment-protective refractory material |
| CN107244906A (en) * | 2017-06-15 | 2017-10-13 | 郑州瑞泰耐火科技有限公司 | Aluminium titanates calcium compound abrasive brick and preparation method thereof |
| CN107266052A (en) * | 2017-07-10 | 2017-10-20 | 武汉科技大学 | Alumina titanium calcium aluminate carborundum multiple phase refractory material and preparation method thereof |
| CN109534796A (en) * | 2018-12-28 | 2019-03-29 | 瑞泰科技股份有限公司 | A kind of transition band of cement kiln and clinkering zone engaging portion corundum carborundum brick |
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| CN1919797A (en) * | 2006-09-08 | 2007-02-28 | 无锡市宝宜耐火材料有限公司 | Fireproof product for cement rotary kiln transition belt |
| CN103922772A (en) * | 2014-04-22 | 2014-07-16 | 武汉科技大学 | Reproducible high-aluminum fireproof raw material utilizing ferrotitanium slag as main material and preparation method thereof |
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2014
- 2014-08-06 CN CN201410383384.XA patent/CN104163646A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1919797A (en) * | 2006-09-08 | 2007-02-28 | 无锡市宝宜耐火材料有限公司 | Fireproof product for cement rotary kiln transition belt |
| CN103922772A (en) * | 2014-04-22 | 2014-07-16 | 武汉科技大学 | Reproducible high-aluminum fireproof raw material utilizing ferrotitanium slag as main material and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609872A (en) * | 2015-01-12 | 2015-05-13 | 马鞍山利尔开元新材料有限公司 | Titanium-containing calcium aluminate-high alumina bauxite modified refractory material, as well as preparation method and application thereof |
| CN104609872B (en) * | 2015-01-12 | 2016-06-15 | 马鞍山利尔开元新材料有限公司 | Modified refractory material of a kind of titanium calcium aluminate-alumine and its preparation method and application |
| CN105036774A (en) * | 2015-08-04 | 2015-11-11 | 武汉科技大学 | Calcium titanium-aluminate prefabricated part for vanadium smelting reverberatory furnace lining and preparation method thereof |
| CN106747341A (en) * | 2016-12-02 | 2017-05-31 | 郑州东方科技耐火材料有限公司 | A kind of carbon roasting furnace preparation method of low creep energy-conserving and environment-protective refractory material |
| CN107244906A (en) * | 2017-06-15 | 2017-10-13 | 郑州瑞泰耐火科技有限公司 | Aluminium titanates calcium compound abrasive brick and preparation method thereof |
| CN107266052A (en) * | 2017-07-10 | 2017-10-20 | 武汉科技大学 | Alumina titanium calcium aluminate carborundum multiple phase refractory material and preparation method thereof |
| CN109534796A (en) * | 2018-12-28 | 2019-03-29 | 瑞泰科技股份有限公司 | A kind of transition band of cement kiln and clinkering zone engaging portion corundum carborundum brick |
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Application publication date: 20141126 |