CN102276272A - High-calcium magnesia-calcia bricks and preparation method thereof - Google Patents
High-calcium magnesia-calcia bricks and preparation method thereof Download PDFInfo
- Publication number
- CN102276272A CN102276272A CN2011101943269A CN201110194326A CN102276272A CN 102276272 A CN102276272 A CN 102276272A CN 2011101943269 A CN2011101943269 A CN 2011101943269A CN 201110194326 A CN201110194326 A CN 201110194326A CN 102276272 A CN102276272 A CN 102276272A
- Authority
- CN
- China
- Prior art keywords
- calcium magnesia
- calcium
- percent
- sand
- magnesia sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses high-calcium magnesia-calcia bricks and a preparation method thereof. The high-calcium magnesia-calcia bricks mainly are mainly prepared from the raw materials in percentage: 9 to 16 percent of calcium magnesite with a particle size of 5 to 7 millimeters, 9 to 16 percent of calcium magnesite with a particle size of 3 to 5 millimeters, 9 to 16 percent of calcium magnesite with a particle size of 1 to 3 millimeters, 13 to 32 percent of calcium magnesite with a particle size of 0.5 to 1 millimeter, 5 to 25 percent of calcium magnesite with a particle size of less than or equal to 0.5 millimeters, 2 to 5 percent of bonding agent and 1 to 5 percent of additive formed by mixing electrically-melted zirconia and electrically-melted lime. The preparation method comprises: combining the raw materials according to a formula, preparing raw materials, blending, forming, firing, impregnating with wax and packing under vacuum with aluminum foil. The bricks have high hydration resistance; and with high purity, the bricks have high slag erosion resistance and are advantageous over other products of the same kind in terms of anti-shock stability. Meanwhile, with a free CaO content of more than 40 percent, the bricks have high molten steel cleaning performance and are particularly suitable for producing high-cleanness steel such as stainless steel.
Description
Technical field
The present invention relates to fire resisting material field, particularly a kind of high calcium magnesia brick and preparation method.
Background technology
The most of magnesia-calcium brick of calcium contents between 20-30% that adopts of one of the refractory materials of the smelting usefulness of present domestic stainless steel and special steel magnesia-calcium brick, this class magnesia-calcium brick free calcium oxide content is on the low side, thermal shock resistance relatively poor so this type of can only be applied on the AOD stove mostly, and be not suitable for being applied on the high equipment of this generic request thermal shock resistance of ladle.
Summary of the invention
The present invention is directed to the technical problem that exists in the above-mentioned prior art, a kind of calcium contents height, high calcium magnesia brick that thermal shock resistance is strong and preparation method thereof are provided.
Technical scheme of the present invention is achieved in that
A kind of high calcium magnesia brick, formulated by following raw materials by weight:
The calcium magnesia sand 9-16% of calcium magnesia sand 9-16%, the 3-5mm of 5-7mm,
The calcium magnesia sand 13-32% of calcium magnesia sand 9-16%, the 0.5-1mm of 1-3mm,
The calcium magnesia sand 5-25% of≤0.5mm, wedding agent 2-5%,
The additive 1-5% that mixes by electric-melting zirconia and electric smelting lime.
As preferably, electric-melting zirconia and electric smelting lime are to carry out compound in 3: 2 ratio.
As preferably, described wedding agent is a SEMI-REFINED PARAFFIN WAX.
A kind of preparation method of high calcium magnesia brick comprises the steps:
(1), calcium magnesia sand is carried out Mechanical Crushing through jaw crusher, oppositely rolling roller crusher, cone crusher successively, send into ball mill again and carry out fine grinding, through after the screen cloth screening, make granularity and be 5-7mm, 3-5mm, 1-3mm, 0.5-1mm ,≤calcium magnesia sand of five kinds of specifications of 0.5mm;
(2), weight percent is on request prepared burden, mix in the material for preparing is sent into the high speed mixing roll, its order of addition(of ingredients) is the calcium magnesia sand of 5-7mm, the calcium magnesia sand of 3-5mm, the calcium magnesia sand of 1-3mm, 0.5-1mm calcium magnesia sand, add wedding agent then, the calcium magnesia sand of≤0.5mm, at last add the additive that is mixed by electric-melting zirconia and electric smelting lime again, the total time of batch mixing is no less than 25 minutes;
(3), the material that mixes is added in the mould, carry out extrusion forming;
(4), the blank of moulding is sent in the tunnel furnace, carried out high temperature and burn till;
(5), behind the blank kiln discharge, carry out waxdip immediately and handle, vacuumize with aluminium foil then and pack.
Adopted the advantage of the present invention of technique scheme to be:
The present invention is through the treatment process of rational batching and science, it is big that this high-performance high calcium magnesia brick of preparation has volume density, be difficult for aquation, cracking, corrosion resistance is strong, and high-temperature stability is good, uses not to be prone to peeling phenomenon, the advantage of long service life, can be applicable in steel melting furnace, refining furnace and the ladle of high tensile steels such as stainless steel, special steel, can adapt to severe cruelization of each operational condition, such as conditions such as refining temperature rising, the increase of VD processing rate, the prolongations of high vacuum hold-time.
The high-performance high calcium magnesia brick that the present invention relates to, calcium contents is at 40-45%, and partially stabilized type electric-melting zirconia and electric smelting lime have been added, improved the thermal shock resistance energy of goods greatly, not only can be used on the smelting equipment AOD stove of stainless steel and special steel, also can be applied on the refining ladle.Owing to contain a large amount of free calcium oxides in the goods, can adsorb impurity component such as S, P in the molten steel simultaneously, help the production of Clean Steel greatly.
Embodiment
The specific embodiment of the present invention is as follows:
Embodiment: produce 100 tons of high-performance high calcium magnesia bricks
1. at first determine production formula, promptly various raw-material ratios.Prescription is: calcium magnesia sand 7-5mm 10%, 5-3mm 15%, 3-1mm 22%, 1-0.5mm 22% ,≤0.5mm 23%; SEMI-REFINED PARAFFIN WAX 3%; The additive 5% that mixes by electric-melting zirconia and electric smelting lime.
According to the consumption that calculates each raw material be: 15 tons of 10 tons of calcium magnesia sand 7-5mm, calcium magnesia sand 5-3mm, 22 tons of 22 tons of calcium magnesia sand 3-1mm, calcium magnesia sand 1-0.5mm, 23 tons of calcium magnesia sand≤0.5mm; 3 tons of SEMI-REFINED PARAFFIN WAX wedding agents; 5 tons of the additives that mixes by electric-melting zirconia and electric smelting lime.
2. prepare burden and batch mixing.According to above production formula, to prepare burden, the gross weight of each batching is 1000kg, concrete batching is: calcium magnesia sand 7-5mm 100kg, 5-3mm 150kg, 3-1mm220kg, 1-0.5mm220kg ,≤0.5mm 230kg; SEMI-REFINED PARAFFIN WAX 30kg; The additive 50kg that mixes by electric-melting zirconia and electric smelting lime.
Then confected materials is sequentially added into and carries out batch mixing in the muller.Order of addition(of ingredients) is: calcium magnesia sand particulate material (7-5mm, 5-3mm, 3-1mm, 1-0.5mm) → SEMI-REFINED PARAFFIN WAX → calcium magnesia sand fine powder (≤0.5mm), the additive that mixes by electric-melting zirconia and electric smelting lime.Mixing time is no less than 25min.
3. moulding.Mixed material is transported to the fitting room carries out moulding, the time of midfeather can not surpass 30min.Attention need be flat the material strip after pouring into pug in the mould.The pressurization dynamics adopts the heavy principle in light earlier back to carry out during moulding.
4. burn till.After treating the qualified and loading of kiln of the green compact inspection of semifinished product, enter tunnel furnace and burn till, firing temperature is controlled at 1680-1700 ℃, and soaking time is at 8-10h, and total firing time is no less than 72h at once.
5. check and packing.For preventing aquation, after the formed product, should test immediately and carry out the waxdip processing then.Packing adopts aluminium foil to carry out vacuum packaging.
6. the physics and chemistry of the high-performance high calcium magnesia brick of this example detection index is: MgO 56.34%, and CaO 41.70%, void content 5.6%, volume density 3.03g/cm
3
Claims (4)
1. high calcium magnesia brick is characterized in that by following raw materials by weight formulated:
The calcium magnesia sand 9-16% of calcium magnesia sand 9-16%, the 3-5mm of 5-7mm,
The calcium magnesia sand 13-32% of calcium magnesia sand 9-16%, the 0.5-1mm of 1-3mm,
The calcium magnesia sand 5-25% of≤0.5mm, wedding agent 2-5%,
The additive 1-5% that mixes by electric-melting zirconia and electric smelting lime.
2. high calcium magnesia brick according to claim 1 is characterized in that: electric-melting zirconia and electric smelting lime are to carry out compound in 3: 2 ratio.
3. high calcium magnesia brick according to claim 1 is characterized in that: described wedding agent is a SEMI-REFINED PARAFFIN WAX.
4. the preparation method of a high calcium magnesia brick is characterized in that comprising the steps:
(1), calcium magnesia sand is carried out Mechanical Crushing through jaw crusher, oppositely rolling roller crusher, cone crusher successively, send into ball mill again and carry out fine grinding, through after the screen cloth screening, make granularity and be 5-7mm, 3-5mm, 1-3mm, 0.5-1mm ,≤calcium magnesia sand of five kinds of specifications of 0.5mm;
(2), weight percent is on request prepared burden, mix in the material for preparing is sent into the high speed mixing roll, its order of addition(of ingredients) is the calcium magnesia sand of 5-7mm, the calcium magnesia sand of 3-5mm, the calcium magnesia sand of 1-3mm, 0.5-1mm calcium magnesia sand, add wedding agent then, the calcium magnesia sand of≤0.5mm, at last add the additive that is mixed by electric-melting zirconia and electric smelting lime again, the total time of batch mixing is no less than 25 minutes;
(3), the material that mixes is added in the mould, carry out extrusion forming;
(4), the blank of moulding is sent in the tunnel furnace, carried out high temperature and burn till;
(5), behind the blank kiln discharge, carry out waxdip immediately and handle, vacuumize with aluminium foil then and pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101943269A CN102276272A (en) | 2011-07-11 | 2011-07-11 | High-calcium magnesia-calcia bricks and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101943269A CN102276272A (en) | 2011-07-11 | 2011-07-11 | High-calcium magnesia-calcia bricks and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102276272A true CN102276272A (en) | 2011-12-14 |
Family
ID=45102067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101943269A Pending CN102276272A (en) | 2011-07-11 | 2011-07-11 | High-calcium magnesia-calcia bricks and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102276272A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058678A (en) * | 2012-12-27 | 2013-04-24 | 浙江金磊高温材料股份有限公司 | High-density ultrahigh-purity magnesia-calcium brick and preparation method thereof |
| CN103396142A (en) * | 2013-08-14 | 2013-11-20 | 辽宁中镁高温材料有限公司 | Composite magnesium-calcium brick having low heat conductivity and high service performance and manufacturing method thereof |
| CN103936435A (en) * | 2014-03-26 | 2014-07-23 | 德清广能耐火材料有限公司 | Magnesium-calcium spinel refractory brick and preparation method thereof |
| CN104387095A (en) * | 2014-10-31 | 2015-03-04 | 浙江金磊高温材料股份有限公司 | Magnesium-calcium-zirconium brick and preparation method thereof |
| CN104651621A (en) * | 2015-01-06 | 2015-05-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for separating coarse magnesium particles from electrolytic magnesium residues |
| CN106554209A (en) * | 2015-09-28 | 2017-04-05 | 洛阳暖盈电子技术有限公司 | A kind of new magnesite-dolomite refractories |
| CN107244923A (en) * | 2016-11-30 | 2017-10-13 | 辽宁科技大学 | It is a kind of to increase the method for unfired magnesia-calcium brick medium temperature intensity |
| CN111943692A (en) * | 2020-06-30 | 2020-11-17 | 辽宁东和新材料股份有限公司 | High-performance magnesia-calcium brick and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986489A (en) * | 2006-12-20 | 2007-06-27 | 辽宁科技大学 | Production process of high quality hydration-resisting high calcium magnesia brick |
| JP2009190946A (en) * | 2008-02-15 | 2009-08-27 | Kurosaki Harima Corp | Mud material |
| CN101921125A (en) * | 2010-08-20 | 2010-12-22 | 浙江金磊高温材料股份有限公司 | Unfired magnesia-calcium brick and preparation method thereof |
| CN101973774A (en) * | 2010-10-28 | 2011-02-16 | 中钢集团洛阳耐火材料研究院有限公司 | Hydration-resistant high-calcium magnesia-calcium brick and production process thereof |
-
2011
- 2011-07-11 CN CN2011101943269A patent/CN102276272A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986489A (en) * | 2006-12-20 | 2007-06-27 | 辽宁科技大学 | Production process of high quality hydration-resisting high calcium magnesia brick |
| JP2009190946A (en) * | 2008-02-15 | 2009-08-27 | Kurosaki Harima Corp | Mud material |
| CN101921125A (en) * | 2010-08-20 | 2010-12-22 | 浙江金磊高温材料股份有限公司 | Unfired magnesia-calcium brick and preparation method thereof |
| CN101973774A (en) * | 2010-10-28 | 2011-02-16 | 中钢集团洛阳耐火材料研究院有限公司 | Hydration-resistant high-calcium magnesia-calcium brick and production process thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058678A (en) * | 2012-12-27 | 2013-04-24 | 浙江金磊高温材料股份有限公司 | High-density ultrahigh-purity magnesia-calcium brick and preparation method thereof |
| CN103396142A (en) * | 2013-08-14 | 2013-11-20 | 辽宁中镁高温材料有限公司 | Composite magnesium-calcium brick having low heat conductivity and high service performance and manufacturing method thereof |
| CN103396142B (en) * | 2013-08-14 | 2014-10-22 | 辽宁中镁高温材料有限公司 | Composite magnesium-calcium brick having low heat conductivity and high service performance and manufacturing method thereof |
| CN103936435A (en) * | 2014-03-26 | 2014-07-23 | 德清广能耐火材料有限公司 | Magnesium-calcium spinel refractory brick and preparation method thereof |
| CN104387095A (en) * | 2014-10-31 | 2015-03-04 | 浙江金磊高温材料股份有限公司 | Magnesium-calcium-zirconium brick and preparation method thereof |
| CN104387095B (en) * | 2014-10-31 | 2016-04-06 | 浙江金磊高温材料股份有限公司 | A kind of magnesia calcium zirconium brick and preparation method thereof |
| CN104651621A (en) * | 2015-01-06 | 2015-05-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for separating coarse magnesium particles from electrolytic magnesium residues |
| CN106554209A (en) * | 2015-09-28 | 2017-04-05 | 洛阳暖盈电子技术有限公司 | A kind of new magnesite-dolomite refractories |
| CN107244923A (en) * | 2016-11-30 | 2017-10-13 | 辽宁科技大学 | It is a kind of to increase the method for unfired magnesia-calcium brick medium temperature intensity |
| CN111943692A (en) * | 2020-06-30 | 2020-11-17 | 辽宁东和新材料股份有限公司 | High-performance magnesia-calcium brick and preparation method thereof |
| CN111943692B (en) * | 2020-06-30 | 2022-05-10 | 辽宁东和新材料股份有限公司 | High-performance magnesia-calcium brick and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102276272A (en) | High-calcium magnesia-calcia bricks and preparation method thereof | |
| CN101921125B (en) | Unfired magnesia-calcium brick and preparation method thereof | |
| CN102351548A (en) | Unburned magnesium-calcium-carbon brick and preparation method thereof | |
| CN101597173B (en) | Method for preparing refractory raw material by corundum slag | |
| CN102515801B (en) | Silica brick for glass furnace | |
| CN103058678A (en) | High-density ultrahigh-purity magnesia-calcium brick and preparation method thereof | |
| CN103992126B (en) | Method for preparing tabular corundum brick for working lining of carbon-free steel ladle | |
| CN103539467A (en) | Mechanically-pressed carbon-free corundum spinel ladle brick as well as preparation method thereof | |
| CN101973774A (en) | Hydration-resistant high-calcium magnesia-calcium brick and production process thereof | |
| CN102329137A (en) | Carbon-free alumina-magnesia unburned brick and preparation method and application thereof | |
| CN102381882B (en) | Zirconium oxide refractory with homogeneous micro-crystallized structure and preparation method thereof | |
| CN103351154A (en) | Thinned ceramic tile and manufacturing method thereof | |
| CN105110660A (en) | Method for reducing, quenching and tempering molten steel slags in reducing atmosphere | |
| CN104876597A (en) | Nano-matrix-combined high-performance fused magnesium calcium brick and manufacturing method thereof | |
| CN103011853A (en) | Manufacturing method of magnesium-calcium regeneration brick | |
| CN102180690B (en) | Method for producing Al2O3-MgO brick by using Al2O3-MgO-CaO synthetic fireproof raw material | |
| CN103496996B (en) | Burnt agalmatolite brick and preparation method of burnt agalmatolite brick | |
| CN103693971B (en) | Dolomite-periclase-calcium zirconate composite fireproof material and preparation method thereof | |
| CN103396142B (en) | Composite magnesium-calcium brick having low heat conductivity and high service performance and manufacturing method thereof | |
| CN101671184A (en) | Formula of high-aluminum bricks sintered at low temperature and production method thereof | |
| CN102303975B (en) | Ultralow-porosity refractory brick and preparation method thereof | |
| CN107434404B (en) | Zirconium composite high-performance fused magnesia calcium zirconium brick and manufacturing method thereof | |
| CN102320844A (en) | Aluminum-magnesium-zirconium brick for RH impregnating pipe and circulating pipe and preparation method thereof | |
| CN112898036A (en) | High-performance mullite castable and preparation method thereof | |
| CN109095902B (en) | A kind of glass furnace paving brick and its production technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111214 |