CN105439577A - Magnesia-calcium clinker adopting core-shell coated structure and preparation method of magnesia-calcium clinker - Google Patents

Magnesia-calcium clinker adopting core-shell coated structure and preparation method of magnesia-calcium clinker Download PDF

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Publication number
CN105439577A
CN105439577A CN201510826060.3A CN201510826060A CN105439577A CN 105439577 A CN105439577 A CN 105439577A CN 201510826060 A CN201510826060 A CN 201510826060A CN 105439577 A CN105439577 A CN 105439577A
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dolomite
clad structure
preparation
magnesia
magnesia sand
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CN105439577B (en
Inventor
张寒
赵惠忠
何晴
丁雄风
赵鹏达
陈琪
聂建华
余俊
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Wuhan University of Science and Engineering WUSE
Wuhan University of Science and Technology WHUST
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Wuhan University of Science and Engineering WUSE
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—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
    • 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
    • C04B35/06—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 oxide mixtures derived from dolomite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3281—Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention relates to magnesia-calcium clinker adopting the core-shell coated structure and a preparation method of the magnesia-calcium clinker. According to the technical scheme, dolomite ore is crushed to 5-8 mm, subjected to heat treatment at the temperature of 900-1,000 DEG C for 0.5-1 h and ball-milled to have the particle size smaller than 80 mu m, and light-burned fine dolomite powder is obtained; then the light-burned fine dolomite powder and water are blended in the mass ratio being 100:(35-40) and mixed in a disk granulating machine for 0.2-0.3 h for granulating formation; formed particles are immersed in Cu(OH)2 gel for 1-2 min, and dolomite particles adopting the coated structure are obtained; then the dolomite particles adopting the coated structure are dried at the temperature of 30-35 DEG C for 12-15 h, dried at the temperature of 110-120 DEG C for 6-12 h, heated to the temperature of 1,200-1,400 DEG C in a resistance furnace, kept at the temperature for 2-3 h and cooled with the furnace, and the magnesia-calcium clinker adopting the core-shell coated structure is obtained. The magnesia-calcium clinker adopting the core-shell coated structure and the preparation method of the magnesia-calcium clinker have the characteristics that the production cost is low, the preparation technology is simple and the energy consumption is low, the prepared magnesia-calcium clinker adopting the core-shell coated structure has the complete core-shell coated structure and the excellent hydration resistance.

Description

A kind of nucleocapsid clad structure calcium magnesia sand and preparation method thereof
Technical field
The invention belongs to calcium magnesia sand technical field.Be specifically related to a kind of nucleocapsid clad structure calcium magnesia sand and preparation method thereof.
Background technology
The high temperature sintering mixture that it is main chemical compositions that calcium magnesia sand generally refers to MgO and CaO, mainly for the preparation of basic refractory goods such as magnesia-calcium brick, konite brick, magnesia-calcium-carbon bricks.But calcium magnesia sand and magnesite-dolomite refractories goods easily absorb the moisture generation hydration reaction in external environment, cause obvious volumetric expansion and efflorescence is damaged.Can say, improve the sintering of calcium magnesia sand and hydration resistance and be directly connected to the industrial production of magnesite-dolomite refractories, accumulating and use.
At present, prepare calcium magnesia sand and mainly select " additive addition method ", with dolomite mineral starting raw material or with magnesite and Wingdale for starting raw material, after broken, light-burned, add a small amount of additive (as Fe 2o 3, Al 2o 3, SiO 2, TiO 2, ZrO 2, Ni 2o 3or rare earth oxide etc.) mix, shaping, high temperature (1500 ~ 1650 DEG C) burns till, and namely fragmentation obtains synthetic magnesia-calcium clinker.
" additive addition method " is adopted to prepare calcium magnesia sand, react under the high temperature conditions mainly through additive and MgO or CaO, form low-melting-point material phase or sosoloid acceleration of sintering, sintering character and the density of calcium magnesia sand is improved with this, reduce " passage " of MgO and CaO and extraneous contact, slow down the hydration reaction of calcium magnesia sand.But adopt " additive addition method " to prepare calcium magnesia sand, not only firing temperature is large with energy consumption compared with high, and the introducing of additive (as rare earth oxide) further increases the production cost of calcium magnesia sand.In addition, adopt " additive addition method " effectively not solve the aquation problem of calcium magnesia sand, once calcium magnesia sand from outward appearance to inner essence aquation occurs, then hydration reaction continues to carry out, and then spolied materials.
Summary of the invention
The present invention is intended to overcome prior art defect, and object is to provide the preparation method of the nucleocapsid clad structure calcium magnesia sand that a kind of production cost is low, preparation technology is simple and energy consumption is little.Complete with nucleocapsid clad structure calcium magnesia sand nucleocapsid clad structure prepared by the method, hydration resistance is excellent.
For achieving the above object, the step of the technical solution used in the present invention is:
Step one, dolomite mineral is crushed to 5 ~ 8mm, under 900 ~ 1000 DEG C of conditions, thermal treatment 0.5 ~ 1 hour, obtains light dolomite material.
Step 2, light dolomite pellet is milled to particle diameter is less than 80 μm, obtain soft-burned dolomite fines.
Step 3, be 100 ︰ (35 ~ 40) by the mass ratio of light dolomite Xi Fen ︰ water, soft-burned dolomite fines and water mixed 0.2 ~ 0.3 hour, granulating and forming in granulating disc, obtained spherical dolomite particles material.
Step 4, spherical dolomite particles material is immersed Cu (OH) 2in gel 1 ~ 2 minute, take out, obtain clad structure dolomite particles material.
Step 5, by clad structure dolomite particles material under 30 ~ 35 DEG C of conditions dry 12 ~ 15 hours, then under 110 ~ 120 DEG C of conditions dry 6 ~ 12 hours, then be placed in resistance furnace and be warming up to 1200 ~ 1400 DEG C, be incubated 2 ~ 3 hours, cool to room temperature with the furnace, obtain nucleocapsid clad structure calcium magnesia sand.
Described dolomite mineral is CaMg (CO 3) 2, the main chemical compositions of dolomite mineral is: CaCO 3be 53 ~ 54wt%, MgCO 3be 42 ~ 44wt%, Fe 2o 3≤ 0.3wt%, SiO 2≤ 1wt%, Al 2o 3≤ 0.5wt%.
Described Cu (OH) 2the solid content of gel is 15 ~ 25wt%, and pH value is 8.0 ~ 8.5.
Owing to adopting technique scheme, the present invention compared with prior art has following positively effect:
The present invention is with natural dolomite mineral for preparing the starting raw material of calcium magnesia sand, abundance, and production cost is low; Dolomite mineral is granulating and forming after fragmentation, ball milling and mixing, then immerses Cu (OH) 2form clad structure in gel, preparation technology is simple.The present invention burns till through 1200 ~ 1400 DEG C, and significantly reduce the firing temperature of nucleocapsid clad structure calcium magnesia sand, energy consumption is little.
In addition, Cu (OH) 2gel at high temperature resolves into CuO crystallite, sintering activity is good, easy and MgO and CaO crystallite forms low melt-phase and mass transfer occurs to flow, promote calcium magnesia sand top layer sintering, form complete nucleocapsid clad structure, reduce film on MgO-CaO clinker hole, prepared nucleocapsid clad structure calcium magnesia sand aquation rate of body weight gain is 0.1 ~ 0.6%, and hydration resistance is excellent.
Therefore, the present invention has the advantages that production cost is low, preparation technology is simple and energy consumption is little, and the nucleocapsid clad structure calcium magnesia sand nucleocapsid clad structure prepared by the method is complete, and hydration resistance is excellent.
Embodiment
Below in conjunction with embodiment, the invention will be further described, the restriction not to its protection domain:
For avoiding repetition, first by as follows for the raw material Unify legislation involved by this embodiment, repeat no more in embodiment:
Described dolomite mineral is CaMg (CO 3) 2, the main chemical compositions of dolomite mineral is: CaCO 3be 53 ~ 54wt%, MgCO 3be 42 ~ 44wt%, Fe 2o 3≤ 0.3wt%, SiO 2≤ 1wt%, Al 2o 3≤ 0.5wt%.
Described Cu (OH) 2the solid content of gel is 15 ~ 25wt%, and pH value is 8.0 ~ 8.5.
embodiment 1
A kind of nucleocapsid clad structure calcium magnesia sand and preparation method thereof.Described in the present embodiment, the concrete steps of preparation method are:
Step one, dolomite mineral is crushed to 5 ~ 8mm, under 900 ~ 950 DEG C of conditions, thermal treatment 0.5 ~ 1 hour, obtains light dolomite material.
Step 2, light dolomite pellet is milled to particle diameter is less than 80 μm, obtain soft-burned dolomite fines.
Step 3, be 100 ︰ (35 ~ 37) by the mass ratio of light dolomite Xi Fen ︰ water, soft-burned dolomite fines and water mixed 0.2 ~ 0.3 hour, granulating and forming in granulating disc, obtained spherical dolomite particles material.
Step 4, spherical dolomite particles material is immersed Cu (OH) 2in gel 1 ~ 2 minute, take out, obtain clad structure dolomite particles material.
Step 5, by clad structure dolomite particles material under 30 ~ 35 DEG C of conditions dry 12 ~ 15 hours, then under 110 ~ 120 DEG C of conditions dry 6 ~ 12 hours, then be placed in resistance furnace and be warming up to 1300 ~ 1400 DEG C, be incubated 2 ~ 3 hours, cool to room temperature with the furnace, obtain nucleocapsid clad structure calcium magnesia sand.
Nucleocapsid clad structure calcium magnesia sand aquation rate of body weight gain prepared by the present embodiment is 0.1 ~ 0.3%, and hydration resistance is excellent.
embodiment 2
A kind of nucleocapsid clad structure calcium magnesia sand and preparation method thereof.Described in the present embodiment, the concrete steps of preparation method are:
Step one, dolomite mineral is crushed to 5 ~ 8mm, under 900 ~ 950 DEG C of conditions, thermal treatment 0.5 ~ 1 hour, obtains light dolomite material.
Step 2, light dolomite pellet is milled to particle diameter is less than 80 μm, obtain soft-burned dolomite fines.
Step 3, be 100 ︰ (36 ~ 38) by the mass ratio of light dolomite Xi Fen ︰ water, soft-burned dolomite fines and water mixed 0.2 ~ 0.3 hour, granulating and forming in granulating disc, obtained spherical dolomite particles material.
Step 4, spherical dolomite particles material is immersed Cu (OH) 2in gel 1 ~ 2 minute, take out, obtain clad structure dolomite particles material.
Step 5, by clad structure dolomite particles material under 30 ~ 35 DEG C of conditions dry 12 ~ 15 hours, then under 110 ~ 120 DEG C of conditions dry 6 ~ 12 hours, then be placed in resistance furnace and be warming up to 1300 ~ 1400 DEG C, be incubated 2 ~ 3 hours, cool to room temperature with the furnace, obtain nucleocapsid clad structure calcium magnesia sand.
Nucleocapsid clad structure calcium magnesia sand aquation rate of body weight gain prepared by the present embodiment is 0.2 ~ 0.4%, and hydration resistance is excellent.
embodiment 3
A kind of nucleocapsid clad structure calcium magnesia sand and preparation method thereof.Described in the present embodiment, the concrete steps of preparation method are:
Step one, dolomite mineral is crushed to 5 ~ 8mm, under 950 ~ 1000 DEG C of conditions, thermal treatment 0.5 ~ 1 hour, obtains light dolomite material.
Step 2, light dolomite pellet is milled to particle diameter is less than 80 μm, obtain soft-burned dolomite fines.
Step 3, be 100 ︰ (37 ~ 39) by the mass ratio of light dolomite Xi Fen ︰ water, soft-burned dolomite fines and water mixed 0.2 ~ 0.3 hour, granulating and forming in granulating disc, obtained spherical dolomite particles material.
Step 4, spherical dolomite particles material is immersed Cu (OH) 2in gel 1 ~ 2 minute, take out, obtain clad structure dolomite particles material.
Step 5, by clad structure dolomite particles material under 30 ~ 35 DEG C of conditions dry 12 ~ 15 hours, then under 110 ~ 120 DEG C of conditions dry 6 ~ 12 hours, then be placed in resistance furnace and be warming up to 1200 ~ 1300 DEG C, be incubated 2 ~ 3 hours, cool to room temperature with the furnace, obtain nucleocapsid clad structure calcium magnesia sand.
Nucleocapsid clad structure calcium magnesia sand aquation rate of body weight gain prepared by the present embodiment is 0.3 ~ 0.5%, and hydration resistance is excellent.
embodiment 4
A kind of nucleocapsid clad structure calcium magnesia sand and preparation method thereof.Described in the present embodiment, the concrete steps of preparation method are:
Step one, dolomite mineral is crushed to 5 ~ 8mm, under 950 ~ 1000 DEG C of conditions, thermal treatment 0.5 ~ 1 hour, obtains light dolomite material.
Step 2, light dolomite pellet is milled to particle diameter is less than 80 μm, obtain soft-burned dolomite fines.
Step 3, be 100 ︰ (38 ~ 40) by the mass ratio of light dolomite Xi Fen ︰ water, soft-burned dolomite fines and water mixed 0.2 ~ 0.3 hour, granulating and forming in granulating disc, obtained spherical dolomite particles material.
Step 4, spherical dolomite particles material is immersed Cu (OH) 2in gel 1 ~ 2 minute, take out, obtain clad structure dolomite particles material.
Step 5, by clad structure dolomite particles material under 30 ~ 35 DEG C of conditions dry 12 ~ 15 hours, then under 110 ~ 120 DEG C of conditions dry 6 ~ 12 hours, then be placed in resistance furnace and be warming up to 1200 ~ 1300 DEG C, be incubated 2 ~ 3 hours, cool to room temperature with the furnace, obtain nucleocapsid clad structure calcium magnesia sand.
Nucleocapsid clad structure calcium magnesia sand aquation rate of body weight gain prepared by the present embodiment is 0.4 ~ 0.6%, and hydration resistance is excellent.
The present invention compared with prior art has following positively effect:
The present invention is with natural dolomite mineral for preparing the starting raw material of calcium magnesia sand, abundance, and production cost is low; Dolomite mineral is granulating and forming after fragmentation, ball milling and mixing, then immerses Cu (OH) 2form clad structure in gel, preparation technology is simple.The present invention burns till through 1200 ~ 1400 DEG C, and significantly reduce the firing temperature of nucleocapsid clad structure calcium magnesia sand, energy consumption is little.
In addition, Cu (OH) 2gel at high temperature resolves into CuO crystallite, sintering activity is good, easy and MgO and CaO crystallite forms low melt-phase and mass transfer occurs to flow, promote calcium magnesia sand top layer sintering, form complete nucleocapsid clad structure, reduce film on MgO-CaO clinker hole, prepared nucleocapsid clad structure calcium magnesia sand aquation rate of body weight gain is 0.1 ~ 0.6%, and hydration resistance is excellent.
Therefore, the present invention has the advantages that production cost is low, preparation technology is simple and energy consumption is little, and the nucleocapsid clad structure calcium magnesia sand nucleocapsid clad structure prepared by the method is complete, and hydration resistance is excellent.

Claims (4)

1. a preparation method for nucleocapsid clad structure calcium magnesia sand, is characterized in that the step of described preparation method is:
Step one, dolomite mineral is crushed to 5 ~ 8mm, under 900 ~ 1000 DEG C of conditions, thermal treatment 0.5 ~ 1 hour, obtains light dolomite material;
Step 2, light dolomite pellet is milled to particle diameter is less than 80 μm, obtain soft-burned dolomite fines;
Step 3, be 100 ︰ (35 ~ 40) by the mass ratio of light dolomite Xi Fen ︰ water, soft-burned dolomite fines and water mixed 0.2 ~ 0.3 hour, granulating and forming in granulating disc, obtained spherical dolomite particles material;
Step 4, spherical dolomite particles material is immersed Cu (OH) 2in gel 1 ~ 2 minute, take out, obtain clad structure dolomite particles material;
Step 5, by clad structure dolomite particles material under 30 ~ 35 DEG C of conditions dry 12 ~ 15 hours, then under 110 ~ 120 DEG C of conditions dry 6 ~ 12 hours, then be placed in resistance furnace and be warming up to 1200 ~ 1400 DEG C, be incubated 2 ~ 3 hours, cool to room temperature with the furnace, obtain nucleocapsid clad structure calcium magnesia sand.
2. the preparation method of nucleocapsid clad structure calcium magnesia sand according to claim 1, is characterized in that described dolomite mineral is CaMg (CO 3) 2, the main chemical compositions of dolomite mineral is: CaCO 3be 53 ~ 54wt%, MgCO 3be 42 ~ 44wt%, Fe 2o 3≤ 0.3wt%, SiO 2≤ 1wt%, Al 2o 3≤ 0.5wt%.
3. the preparation method of nucleocapsid clad structure calcium magnesia sand according to claim 1, is characterized in that described Cu (OH) 2the solid content of gel is 15 ~ 25wt%, and pH value is 8.0 ~ 8.5.
4. a nucleocapsid clad structure calcium magnesia sand, is characterized in that described nucleocapsid clad structure calcium magnesia sand is the nucleocapsid clad structure calcium magnesia sand prepared by preparation method of the nucleocapsid clad structure calcium magnesia sand according to any one of claim 1 ~ 3.
CN201510826060.3A 2015-11-25 2015-11-25 A kind of nucleocapsid clad structure calcium magnesite and preparation method thereof Active CN105439577B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106431433A (en) * 2016-09-14 2017-02-22 武汉科技大学 Dense granule magnesia-calcia material and preparation method thereof
CN106493284A (en) * 2016-11-24 2017-03-15 武汉科技大学 A kind of nucleocapsid structure spherical quartz molding sand and preparation method thereof
CN106495665A (en) * 2016-11-03 2017-03-15 武汉科技大学 A kind of hydration-resisting calcium magnesite and preparation method thereof
CN106631072A (en) * 2016-12-29 2017-05-10 浙江自立新材料股份有限公司 Gradient material for castable and preparation method thereof
CN106630968A (en) * 2016-09-26 2017-05-10 武汉科技大学 A compact periclase chondrule and a preparing method thereof
CN107445628A (en) * 2017-09-08 2017-12-08 常州市奥普泰科光电有限公司 A kind of preparation method of hydration-resisting calcium magnesite
GB2589905A (en) * 2019-12-12 2021-06-16 Univ Exeter Refractory materials and methods of manufacture thereof
CN115321957A (en) * 2022-09-13 2022-11-11 中钢集团洛阳耐火材料研究院有限公司 Tundish lining material for smelting quality steel and preparation method

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CN1478754A (en) * 2002-08-30 2004-03-03 武汉科技大学 Antihydration MgO-CaO clinker and its preparation method
KR20150097934A (en) * 2014-02-19 2015-08-27 (주)행성화학 Heat blocking window having material for blocking near IR

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1478754A (en) * 2002-08-30 2004-03-03 武汉科技大学 Antihydration MgO-CaO clinker and its preparation method
KR20150097934A (en) * 2014-02-19 2015-08-27 (주)행성화학 Heat blocking window having material for blocking near IR

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106431433B (en) * 2016-09-14 2019-03-19 武汉科技大学 A kind of dense granule magnesium calcium material and preparation method thereof
CN106431433A (en) * 2016-09-14 2017-02-22 武汉科技大学 Dense granule magnesia-calcia material and preparation method thereof
CN106630968A (en) * 2016-09-26 2017-05-10 武汉科技大学 A compact periclase chondrule and a preparing method thereof
CN106630968B (en) * 2016-09-26 2019-03-19 武汉科技大学 A kind of densification periclase spherolite and preparation method thereof
CN106495665A (en) * 2016-11-03 2017-03-15 武汉科技大学 A kind of hydration-resisting calcium magnesite and preparation method thereof
CN106495665B (en) * 2016-11-03 2019-03-19 武汉科技大学 A kind of hydration-resisting calcium magnesite and preparation method thereof
CN106493284A (en) * 2016-11-24 2017-03-15 武汉科技大学 A kind of nucleocapsid structure spherical quartz molding sand and preparation method thereof
CN106631072A (en) * 2016-12-29 2017-05-10 浙江自立新材料股份有限公司 Gradient material for castable and preparation method thereof
CN106631072B (en) * 2016-12-29 2019-05-28 浙江自立新材料股份有限公司 A kind of functionally gradient material (FGM) and preparation method thereof for castable
CN107445628A (en) * 2017-09-08 2017-12-08 常州市奥普泰科光电有限公司 A kind of preparation method of hydration-resisting calcium magnesite
GB2589905A (en) * 2019-12-12 2021-06-16 Univ Exeter Refractory materials and methods of manufacture thereof
CN115321957A (en) * 2022-09-13 2022-11-11 中钢集团洛阳耐火材料研究院有限公司 Tundish lining material for smelting quality steel and preparation method
CN115321957B (en) * 2022-09-13 2023-10-20 中钢集团洛阳耐火材料研究院有限公司 Tundish lining material for smelting quality steel and preparation method

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