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CN108585797A - A kind of magnesia pushing off the slag sliding plate brick of self-lubricating and preparation method thereof of addition boron nitride - Google Patents

A kind of magnesia pushing off the slag sliding plate brick of self-lubricating and preparation method thereof of addition boron nitride Download PDF

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Publication number
CN108585797A
CN108585797A CN201810468046.4A CN201810468046A CN108585797A CN 108585797 A CN108585797 A CN 108585797A CN 201810468046 A CN201810468046 A CN 201810468046A CN 108585797 A CN108585797 A CN 108585797A
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content
sliding plate
boron nitride
granularity
pushing
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CN108585797B (en
Inventor
陈正常
余金红
周亮
张远红
纪凯
赵峰
余西平
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MAANSHAN LIER KAIYUAN NEW MATERIAL Co Ltd
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MAANSHAN LIER KAIYUAN NEW MATERIAL Co Ltd
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    • C—CHEMISTRY; METALLURGY
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    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
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Abstract

The invention discloses a kind of magnesia pushing off the slag sliding plate bricks of self-lubricating and preparation method thereof of addition boron nitride, are related to technical field of refractory materials.The raw material and weight percent of the sliding plate brick be：Granularity is the magnesium chromium aloxite 20%~25% of 0~1mm, and granularity is the magnesium chromium aloxite 18%~20% of 1~3mm, and granularity is the magnesium chromium aloxite 22%~25% of 3~5mm, magnesium zircon sand fine powder 12%, α Al2O3Micro mist 4%~5%, carbide fine powder 1%~3%, metallic silicon power 2%~5%, carbon black 2%~4%, high temperature reinforcing agent 4%, Guangxi white clay 2%, boron nitride 3%~5%；Additional 5323 phenolic resin binder 3%~6%.Above-mentioned raw materials are obtained into finished product sliding plate brick through processes such as fine powder material mixing, coarse aggregate mixing, material mixing, molding, heat treatment, kiln discharge sortings.The magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride of the present invention, with good high temperature resistance, corrosion resistance, scour resistance and thermal shock resistance, use originally the magnesium chromium aloxite for alloy smelting industrial residue greatly reduce production cost as primary raw material.

Description

A kind of magnesia pushing off the slag sliding plate brick of self-lubricating and preparation method thereof of addition boron nitride
Technical field
The present invention relates to technical field of refractory materials more particularly to a kind of magnesia pushing off the slag slide plates of self-lubricating of addition boron nitride Brick.
Background technology
With the development of fine work steel refining technology and technique, converter slag-resisting system becomes increasingly in steel smelting procedure It is important, become the critical process for smelting fine work steel.It is in converter tapping process control slag device, can effectively adjust from Converter makes smelting operation be easier to control to the slag amount of ladle, improves STEELMAKING PRODUCTION efficiency, ensures the quality of fine work steel.
Converter slag-resisting system by cylinder drive, mechanical part and refractory portion, (i.e. slide by tapping hole, inside and outside pushing off the slag Plate, outer nozzle brick) it forms, pushing off the slag slide plate bears molten steel, the mechanical erosion of slag and chemical erosion during controlling slag.In order to The lower quantity of slag in converter tapping process is controlled, pushing off the slag and rear slag stopping before pushing off the slag slide plate needs, pushing off the slag slide plate requirement at this time has good Wear-resisting property and elevated temperature strength.Domestic pushing off the slag slide plate mainly has：Aluminium carbonaceous, aluminium zirconium carbon and and its inlay the slide plate etc. of zirconium；One As select corundum, zirconium-containing material, nanoscale N330 carbon blacks, using 5323 phenolic resin as bonding agent, the above cost of material is higher, 1550 DEG C or so firings are needed simultaneously, and not only manufacturing cost is high, but also environmental pollution is big, and energy consumption is big, is not suitable with current energy-saving ring The policy of guarantor.Therefore, the present invention is by adding alloy smelting industrial residue (magnesium chromium aloxite), be greatly reduced the raw material of slide plate at This, provides a kind of magnesia slide plate of high-performance.
Invention content
Above-mentioned in order to solve the problems, such as, the present invention proposes a kind of magnesia pushing off the slag slide plate of self-lubricating of addition boron nitride Brick, which has good high temperature resistance, corrosion resistance, scour resistance and thermal shock resistance, since magnesium chromium aloxite is The primary raw material of alloy smelting industrial residue, the sliding plate brick selects magnesium chromium aloxite, greatly reduces the production cost of sliding plate brick.
The purpose of the present invention is to provide a kind of magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride, the originals of the sliding plate brick Material and weight percent are：Granularity is the magnesium chromium aloxite 20%~25% of 0~1mm, and granularity is the magnesium chromium aloxite 18% of 1~3mm ~20%, granularity is the magnesium chromium aloxite 22%~25% of 3~5mm, magnesium zircon sand fine powder 12%, α-Al2O3Micro mist 4%~5%, carbon SiClx fine powder 1%~3%, metallic silicon power 2%~5%, carbon black 2%~4%, high temperature reinforcing agent 4%, Guangxi white clay 2%, nitridation Boron 3%~5%；Additional 5323 phenolic resin binder 3%~6%.
Preferably, the magnesium chromium aloxite chemical composition is：Al2O3Content be 13.15%, CaO content be 4.36%, Cr2O3Content be 8.11%, Fe2O3Content be 0.35%, MgO content be 72.82%, SiO2Content be 0.12%.
Preferably, the magnesium zircon sand fine-powdered, which studies, is divided into：The content of CaO is 3.31%, Fe2O3Content be The content of 0.37%, MgO are 86.82%, SiO2Content be 0.12%, ZrO2Content be 9.35%；The magnesium zircon sand fine powder Granularity be 200 mesh.
Preferably, the α-Al2O3Micronizing, which studies, to be divided into：Al2O3Content be 99.32%, Na2The content of O is 0.07%, SiO2Content be 0.12%；α-the Al2O3The average grain diameter of micro mist is 2 μm.
Preferably, the carbide fine powder chemical composition is：The content of SiC is that the content of 95.15%, CaO is 0.31%, Fe2O3Content be 0.17%, the granularity of the carbide fine powder is 325 mesh.
Preferably, the metallic silicon power chemical composition is：The content that the content of Si is 95.15%, CaO is 0.31%, Fe2O3Content be 0.17%；The granularity of the metallic silicon power is 325 mesh.
Preferably, the trade mark of the carbon black is N330, the carbon black average grain diameter 20nm.
Preferably, the main component of the high temperature reinforcing agent is boron glass powder, and the boron glass powder is in high temperature reinforcing agent Content be 93%；The granularity of the high temperature reinforcing agent is 325 mesh.
Preferably, the granularity of the Guangxi white clay is 320 mesh；The granularity of the boron nitride is 325 mesh.
Another object of the present invention is to provide a kind of preparation sides of the magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride Method includes the following steps：
(1) fine powder material mixes：By weight percentage by magnesium zircon sand fine powder, α-Al2O3Micro mist, carbide fine powder, metallic silicon Powder, carbon black, high temperature reinforcing agent, Guangxi white clay and boron nitride, which are put into be uniformly mixed, is made fine powder material；
(2) coarse aggregate mixes：The magnesium for being by weight percentage 1~3mm by magnesium chromium aloxite that granularity is 0~1mm, granularity Chromium aloxite, the magnesium chromium aloxite that granularity is 3~5mm are mixed and made into coarse aggregate；
(3) batch mixing：By dry-mixed 2~3 minutes of the coarse aggregate edge runner-wet mill for preparing in step (2), then by weight percentage 5323 phenolic resin binders are slowly added to, manufactured fine powder material in step (1) is added, mixing discharges after 20~30 minutes, Obtain mixture；
(4) it is molded：By mixture compression moulding embryo brick on 630t electric screw brick press made of step (3)；
(5) it is heat-treated：The embryo brick that step (4) obtains is put into kiln and carries out baking heat treatment, into kiln temperature when kilneye It is 45 DEG C, toasts 9~11 hours at this temperature；Control kiln temperature is increased to 110 DEG C, and it is small to toast 15~17 at this temperature When；Control kiln temperature is increased to 200 DEG C, at this temperature baking time 16~18 hours；Obtain sliding plate brick；
(6) kiln discharge sorts：Qualified sliding plate brick is selected, polishing packaging is then carried out.
The invention has the advantages that：It is added to nitridation in the magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride of the present invention Boron, due to boron nitride have excellent inoxidizability, corrosion resistance and lubricity so that it is of the present invention addition boron nitride from Magnesia pushing off the slag sliding plate brick is lubricated with good corrosion resistance and thermal shock resistance and self-lubricating property；Since magnesium chromium aloxite is ferrochrome The industrial chrome scum of alloy, and the magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride of the present invention passes through the magnesium chromium that is added to Aloxite is effectively recycled as granulated aggregate, magnesium chromium aloxite, is mitigated harm of the magnesium chromium aloxite to environment, is also reduced Production cost；Since the refractoriness of magnesium chromium aloxite is more than 1790 DEG C, there is excellent high temperature resistant property, main object is mutually magnesium chromium Spinelle, pink fused alumina, calcium aluminate, combined type magnalium chromium high temperature spinelle etc., wherein pink fused alumina have higher fusing point, lower Coefficient of thermal expansion, to improve the Slag resistance performance of sliding plate brick；The self-lubricating of addition boron nitride of the present invention is magnesia Pushing off the slag sliding plate brick generates magnesium aluminate spinel in the preparation, and since magnesium aluminate spinel has high-melting-point, low-expansion coefficient, excellent is anti- Thermal shock resistance and corrosion resistance, magnesium aluminate spinel can be by the SiO in molten steel under high temperature2It is adsorbed with CaO, generates MCS, CA2, CA6 Equal high viscosities substance, reduces the osmosis of molten steel and slag.
Specific implementation mode
Firstly, it is necessary to which explanation, illustrates oneself of addition boron nitride of the present invention by by way of example below The characteristics of lubricating magnesia pushing off the slag sliding plate brick and advantage etc., however what all descriptions were intended merely to illustrate, without should be by it It is interpreted as forming any restrictions to the present invention.
To avoid repeating, first by involved in embodiment related raw material technical parameter or production method be described collectively, implement It is repeated no more in example：
The magnesium chromium aloxite chemical composition is：Al2O3Content be 13.15%, CaO content be 4.36%, Cr2O3's Content is 8.11%, Fe2O3Content be 0.35%, MgO content be 72.82%, SiO2Content be 0.12%.
The magnesium zircon sand fine-powdered, which studies, to be divided into：The content of CaO is 3.31%, Fe2O3Content be 0.37%, MgO Content is 86.82%, SiO2Content be 0.12%, ZrO2Content be 9.35%；The granularity of the magnesium zircon sand fine powder is 200 Mesh.
α-the Al2O3Micronizing, which studies, to be divided into：Al2O3Content be 99.32%, Na2The content of O is 0.07%, SiO2 Content be 0.12%；α-the Al2O3The average grain diameter of micro mist is 2 μm.
The carbide fine powder chemical composition is：The content that the content of SiC is 95.15%, CaO is 0.31%, Fe2O3's Content is 0.17%, and the granularity of the carbide fine powder is 325 mesh.
The metallic silicon power chemical composition is：The content that the content of Si is 95.15%, CaO is 0.31%, Fe2O3Content It is 0.17%；The granularity of the metallic silicon power is 325 mesh.
The trade mark of the carbon black is N330, the carbon black average grain diameter 20nm.
The main component of the high temperature reinforcing agent is boron glass powder, and content of the boron glass powder in high temperature reinforcing agent is 93%；The granularity of the high temperature reinforcing agent is 325 mesh.
The granularity of the Guangxi white clay is 320 mesh；The granularity of the boron nitride is 325 mesh.
The embodiment just provided below by this is come the magnesia pushing off the slag cunning of self-lubricating to addition boron nitride of the present invention Plate brick illustrates.
Embodiment 1
The raw material of the magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride and weight percent described in the present embodiment are：Granularity For the magnesium chromium aloxite 25% of 0~1mm, granularity is the magnesium chromium aloxite 18% of 1~3mm, and granularity is the magnesium chromium aloxite 22 of 3~5mm, Magnesium zircon sand fine powder 12%, α-Al2O3Micro mist 4%, carbide fine powder 1%, metallic silicon power 5%, carbon black 4%, high temperature reinforcing agent 4%, Guangxi white clay 2%, boron nitride 3%；Additional 5323 phenolic resin binder 5%.
The preparation method that the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride is added described in the present embodiment, includes the following steps：
(1) fine powder material mixes：By weight percentage by magnesium zircon sand fine powder, α-Al2O3Micro mist, carbide fine powder, metallic silicon Powder, carbon black, high temperature reinforcing agent, Guangxi white clay and boron nitride, which are put into be uniformly mixed, is made fine powder material；
(2) coarse aggregate mixes：The magnesium for being by weight percentage 1~3mm by magnesium chromium aloxite that granularity is 0~1mm, granularity Chromium aloxite, the magnesium chromium aloxite that granularity is 3~5mm are mixed and made into coarse aggregate；
(3) batch mixing：By dry-mixed 2 minutes of the coarse aggregate edge runner-wet mill for preparing in step (2), then by weight percentage slowly 5323 phenolic resin binders are added, add manufactured fine powder material in step (1), mixing discharges after 25 minutes, mixed Material；
(4) it is molded：By mixture compression moulding embryo brick on 630t electric screw brick press made of step (3)；
(5) it is heat-treated：The embryo brick that step (4) obtains is put into kiln and carries out baking heat treatment, into kiln temperature when kilneye It is 45 DEG C, toasts 9 hours at this temperature；Control kiln temperature is increased to 110 DEG C, toasts 15 hours at this temperature；Control Kiln temperature is increased to 200 DEG C, at this temperature baking time 16 hours；Obtain sliding plate brick；
(6) kiln discharge sorts：Qualified sliding plate brick is selected, polishing packaging is then carried out.
Embodiment 2
Raw material and weight percent such as 1 institute of table of the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride are added described in the present embodiment Show.The preparation method that the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride is added described in the present embodiment, includes the following steps：
(1) fine powder material mixes：By weight percentage by magnesium zircon sand fine powder, α-Al2O3Micro mist, carbide fine powder, metallic silicon Powder, carbon black, high temperature reinforcing agent, Guangxi white clay and boron nitride, which are put into be uniformly mixed, is made fine powder material；
(2) coarse aggregate mixes：The magnesium for being by weight percentage 1~3mm by magnesium chromium aloxite that granularity is 0~1mm, granularity Chromium aloxite, the magnesium chromium aloxite that granularity is 3~5mm are mixed and made into coarse aggregate；
(3) batch mixing：By dry-mixed 3 minutes of the coarse aggregate edge runner-wet mill for preparing in step (2), then by weight percentage slowly 5323 phenolic resin binders are added, add manufactured fine powder material in step (1), mixing discharges, mixed after twenty minutes Material；
(4) it is molded：By mixture compression moulding embryo brick on 630t electric screw brick press made of step (3)；
(5) it is heat-treated：The embryo brick that step (4) obtains is put into kiln and carries out baking heat treatment, into kiln temperature when kilneye It is 45 DEG C, toasts 10 hours at this temperature；Control kiln temperature is increased to 110 DEG C, toasts 16 hours at this temperature；Control Kiln temperature is increased to 200 DEG C, at this temperature baking time 17 hours；Obtain sliding plate brick；
(6) kiln discharge sorts：Qualified sliding plate brick is selected, polishing packaging is then carried out.
Embodiment 3
Raw material and weight percent such as 1 institute of table of the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride are added described in the present embodiment Show.The preparation method that the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride is added described in the present embodiment, includes the following steps：
(1) fine powder material mixes：By weight percentage by magnesium zircon sand fine powder, α-Al2O3Micro mist, carbide fine powder, metallic silicon Powder, carbon black, high temperature reinforcing agent, Guangxi white clay and boron nitride, which are put into be uniformly mixed, is made fine powder material；
(2) coarse aggregate mixes：The magnesium for being by weight percentage 1~3mm by magnesium chromium aloxite that granularity is 0~1mm, granularity Chromium aloxite, the magnesium chromium aloxite that granularity is 3~5mm are mixed and made into coarse aggregate；
(3) batch mixing：By dry-mixed 3 minutes of the coarse aggregate edge runner-wet mill for preparing in step (2), then by weight percentage slowly 5323 phenolic resin binders are added, add manufactured fine powder material in step (1), mixing discharges after 30 minutes, mixed Material；
(4) it is molded：By mixture compression moulding embryo brick on 630t electric screw brick press made of step (3)；
(5) it is heat-treated：The embryo brick that step (4) obtains is put into kiln and carries out baking heat treatment, into kiln temperature when kilneye It is 45 DEG C, toasts 11 hours at this temperature；Control kiln temperature is increased to 110 DEG C, toasts 17 hours at this temperature；Control Kiln temperature is increased to 200 DEG C, at this temperature baking time 18 hours；Obtain sliding plate brick；
(6) kiln discharge sorts：Qualified sliding plate brick is selected, polishing packaging is then carried out.
Embodiment 4
Raw material and weight percent such as 1 institute of table of the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride are added described in the present embodiment Show.The preparation method that the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride is added described in the present embodiment, includes the following steps：
(1) fine powder material mixes：By weight percentage by magnesium zircon sand fine powder, α-Al2O3Micro mist, carbide fine powder, metallic silicon Powder, carbon black, high temperature reinforcing agent, Guangxi white clay and boron nitride, which are put into be uniformly mixed, is made fine powder material；
(2) coarse aggregate mixes：The magnesium for being by weight percentage 1~3mm by magnesium chromium aloxite that granularity is 0~1mm, granularity Chromium aloxite, the magnesium chromium aloxite that granularity is 3~5mm are mixed and made into coarse aggregate；
(3) batch mixing：By dry-mixed 2 minutes of the coarse aggregate edge runner-wet mill for preparing in step (2), then by weight percentage slowly 5323 phenolic resin binders are added, add manufactured fine powder material in step (1), mixing discharges after 30 minutes, mixed Material；
(4) it is molded：By mixture compression moulding embryo brick on 630t electric screw brick press made of step (3)；
(5) it is heat-treated：The embryo brick that step (4) obtains is put into kiln and carries out baking heat treatment, into kiln temperature when kilneye It is 45 DEG C, toasts 9 hours at this temperature；Control kiln temperature is increased to 110 DEG C, toasts 17 hours at this temperature；Control Kiln temperature is increased to 200 DEG C, at this temperature baking time 16 hours；Obtain sliding plate brick；
(6) kiln discharge sorts：Qualified sliding plate brick is selected, polishing packaging is then carried out.
The granularity and weight percent of the used raw material of 1 the various embodiments described above of table
The physicochemical property and average life parameter of sliding plate brick obtained by 2 the various embodiments described above of table
It is shown according in table 2, the magnesia pushing off the slag sliding plate brick of self-lubricating of each embodiment addition boron nitride obtained uses the longevity Life is 13~14 times/set, and blowhole is total expanding for 15.5mm；Average each erosion rate 1.19mm/ times.By with existing product pair It is analyzed than measuring, the average erosion rate of the magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride of the present invention is≤2mm/ It is secondary, less than erosion rate 3.5mm/ times of existing aluminium zirconium carbonaceous product；Meanwhile the self-lubricating magnesium of addition boron nitride of the present invention The cracks of matter pushing off the slag sliding plate brick are good, and there is only blowhole radiological predication fallout plot hair checks, and plate face is smooth, do not occur abnormal plucking feelings Condition or blowhole abnormal erosion phenomenon.The magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride of the present invention is more excellent to be moistened certainly Slip energy, corrosion-resistant property, thermal shock resistance and high temperature resistance.

Claims (10)

1. a kind of magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride, which is characterized in that the raw material and weight hundred of the sliding plate brick Point ratio is：Granularity is the magnesium chromium aloxite 20%~25% of 0~1mm, and granularity is the magnesium chromium aloxite 18%~20% of 1~3mm, granularity For the magnesium chromium aloxite 22%~25% of 3~5mm, magnesium zircon sand fine powder 12%, α-Al2O3Micro mist 4%~5%, carbide fine powder 1% ~3%, metallic silicon power 2%~5%, carbon black 2%~4%, high temperature reinforcing agent 4%, Guangxi white clay 2%, boron nitride 3%~5%； Additional 5323 phenolic resin binder 3%~6%.
2. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：The magnesium chromium aluminium Sand chemical composition is：Al2O3Content be 13.15%, CaO content be 4.36%, Cr2O3Content be 8.11%, Fe2O3's The content that content is 0.35%, MgO is 72.82%, SiO2Content be 0.12%.
3. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：The magnesium zircon sand Fine-powdered, which studies, to be divided into：The content of CaO is 3.31%, Fe2O3Content be 0.37%, MgO content be 86.82%, SiO2's Content is 0.12%, ZrO2Content be 9.35%；The granularity of the magnesium zircon sand fine powder is 200 mesh.
4. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：α-the Al2O3 Micronizing, which studies, to be divided into：Al2O3Content be 99.32%, Na2The content of O is 0.07%, SiO2Content be 0.12%；It is described α-Al2O3The average grain diameter of micro mist is 2 μm.
5. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：The silicon carbide Fine-powdered, which studies, to be divided into：The content that the content of SiC is 95.15%, CaO is 0.31%, Fe2O3Content be 0.17%, the carbon The granularity of SiClx fine powder is 325 mesh.
6. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：The metallic silicon Dusting, which studies, to be divided into：The content that the content of Si is 95.15%, CaO is 0.31%, Fe2O3Content be 0.17%；The metal The granularity of silica flour is 325 mesh.
7. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：The carbon black The trade mark is N330, the carbon black average grain diameter 20nm.
8. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：The high temperature increases The main component of strong agent is boron glass powder, and content of the boron glass powder in high temperature reinforcing agent is 93%；The high temperature enhancing The granularity of agent is 325 mesh.
9. adding the magnesia pushing off the slag sliding plate brick of self-lubricating of boron nitride according to claim 1, it is characterised in that：The Guangxi White The granularity of mud is 320 mesh；The granularity of the boron nitride is 325 mesh.
10. a kind of preparation method of the magnesia pushing off the slag sliding plate brick of self-lubricating of addition boron nitride as described in claim 1 to 8, It is characterized in that, includes the following steps：
(1) fine powder material mixes：By weight percentage by magnesium zircon sand fine powder, α-Al2O3Micro mist, carbide fine powder, metallic silicon power, charcoal Black, high temperature reinforcing agent, Guangxi white clay and boron nitride, which are put into be uniformly mixed, is made fine powder material；
(2) coarse aggregate mixes：The magnesium chromium aluminium for being by weight percentage 1~3mm by magnesium chromium aloxite that granularity is 0~1mm, granularity Sand, the magnesium chromium aloxite that granularity is 3~5mm are mixed and made into coarse aggregate；
(3) batch mixing：By dry-mixed 2~3 minutes of the coarse aggregate edge runner-wet mill for preparing in step (2), then by weight percentage slowly 5323 phenolic resin binders are added, add manufactured fine powder material in step (1), mixing discharges after 20~30 minutes, obtains Mixture；
(4) it is molded：By mixture compression moulding embryo brick on 630t electric screw brick press made of step (3)；
(5) it is heat-treated：The embryo brick that step (4) obtains is put into kiln and carries out baking heat treatment, is 45 into kiln temperature when kilneye DEG C, it toasts 9~11 hours at this temperature；Control kiln temperature is increased to 110 DEG C, toasts 15~17 hours at this temperature； Control kiln temperature is increased to 200 DEG C, at this temperature baking time 16~18 hours；Obtain sliding plate brick；
(6) kiln discharge sorts：Qualified sliding plate brick is selected, polishing packaging is then carried out.
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