CN1266827A - Immersed-in-wax burnt conite brick and its making process - Google Patents

Immersed-in-wax burnt conite brick and its making process Download PDF

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Publication number
CN1266827A
CN1266827A CN00110253A CN00110253A CN1266827A CN 1266827 A CN1266827 A CN 1266827A CN 00110253 A CN00110253 A CN 00110253A CN 00110253 A CN00110253 A CN 00110253A CN 1266827 A CN1266827 A CN 1266827A
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China
Prior art keywords
sand
konite
synthetic
burn till
accounts
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Pending
Application number
CN00110253A
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Chinese (zh)
Inventor
王守彬
王守昆
虞啸松
高心魁
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QINGHUA GROUP CO Ltd YINGKOU
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QINGHUA GROUP CO Ltd YINGKOU
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Priority to CN00110253A priority Critical patent/CN1266827A/en
Publication of CN1266827A publication Critical patent/CN1266827A/en
Pending legal-status Critical Current

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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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/47—Oils, fats or waxes natural resins
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C04B2111/00551—Refractory coatings, e.g. for tamping
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

An immersed-in-wax burnt conite brick contains MgO (75-80 wt.%), CaO (17-22 wt.%) and SiO2+Fe2O3+Al2O3 (0-3 wt.%) and is prepared from magnesite and dolomite through light burning, digestion, grinding, wet grinding, pressing, sphering, burning again, pugging, shaping, and immersing in wax. Its advantages are high chemical corrosion resistance to molten slag, high high-temp strength and stability, simple process and low cost. It can be used as the liner of AOD or VOD refining furnace and converter.

Description

Burn till cured konite brick and the manufacture craft of soaking
The present invention relates to cured konite brick refractory materials and the making method of soaking of burning till of a kind of AOD of being applied to, VOD refining furnace and converter lining.
Chemical erosion, thermostability, the high temperature resistance intensity of the anti-slag of refractory materials of present domestic AOD, VOD refining furnace and converter lining are relatively low, so life cycle is short, are easy to damage, and production cost is increased.
The purpose of this invention is to provide a kind of chemical erosion that higher anti-slag is arranged, the thermostability height, high temperature resistance intensity is big burns till the cured konite brick and preparation method thereof that soaks.
For achieving the above object, technical scheme of the present invention is: burn till the cured konite brick that soaks, its Chemical Composition weight ratio is MgO 75-80%,
CaO?17-22％，
SiO 2+Fe 2O 3+Al 2O 3 0-3％。
It is as follows successively to burn till cured manufacturing process steps of soaking konite brick:
(1) preparation of raw material:
1. respectively wagnerite and rhombspar are carried out light-burnedly, light roasting temperature is lower than 1200 ℃;
2. light dolomite sand being added water 20-40% digests;
3. postdigestive light dolomite sand and caustic magnesite are prepared burden,
Light dolomite sand: caustic magnesite=30-45: 55-70;
4. prepare and carry out fine grinding behind the material and become fine powder, mix, add water 10-20% with edge runner-wet mill;
5. with the pug pressure ball of perfecting, seasoning 24-28 hour;
9. dried ball base adopts with the coke of low ashes and the high temperature vertical kiln that coal is fuel and calcines, and calcining temperature is 1700-2000 ℃, is sintered into synthetic konite sand, its index:
MgO75-80％，CaO17-22％，D.B≥3.20g/cm 3；
(2) brickmaking technology:
1. will synthesize that konite sand is broken to be ground into the particulate material that granularity is 8-5mm, 5-2mm and 2-0mm, and expect with part 2-0mm to grind＜0.088 fine powder;
2. prepare burden: the synthetic konite sand of 8-5mm accounts for 5-10%,
The synthetic konite sand of 5-2mm accounts for 30-40%,
The synthetic konite sand of 2-0mm accounts for 20-30%,
The fine powder of＜0.088mm accounts for 20-30%;
3. particulate material will be at the feed bin internal heating to 30-60%;
4. adopt paraffin to make wedding agent, add-on 3-4%;
5. the material for preparing carries out batch mixing with sand mill, and the pug temperature is controlled between 30-50 ℃;
6. adobe moulding on 800t and 1000t friction press, adobe density is at 3.0g/cm 3More than;
7. after the moulding adobe not drying direct code excess of imports hyperthermia tunnel Kiln to the kiln car burn till, burn till top temperature and be controlled at 1600-1650 ℃, soak cured processing after goods burn till.
The present invention is owing to adopt high pure raw material-synthetic konite sand and goods burn till after cured soaking, so have the chemical erosion ability of higher anti-slag; MgO/CaO is than suitable in the raw material, and brickmaking batching granulometric composition is reasonable, makes the present invention have higher thermostability; Synthetic high-purity konite sand of two steps calcining and goods high temperature resistance intensity height; High-pressure molding technology has improved adobe density, reduces void content.Apparent porosity of the present invention≤3%, volume density 〉=3.05g/cm 3, cold crushing strength 〉=70MPa, 0.2MPa load softening point 〉=1700 ℃.Compare with oil immersion technology, burn till back needing no vacuum oil immersion, heat and pressurize and injection pitch, reduced technological process, reduced production cost, improved service efficiency.
Embodiment 1
Burn till the cured konite brick that soaks, its Chemical Composition weight percent is:
MgO?75％
CaO?22％
SiO 2+Fe 2O 3+Al 2O 3％。
Manufacture craft:
One, the preparation of raw material
Carry out light-burnedly with high-grade wagnerite and rhombspar, light baking kiln is fuel with coal gas, does not pollute, and improves the purity of raw material.Light roasting temperature is lower than 1200 ℃.Light dolomite sand adds water 20-40% to be digested.Postdigestive light dolomite sand and caustic-calcined magnesite are prepared burden by a certain percentage.Light dolomite sand: caustic-calcined magnesite=30-45: 55-70.The material for preparing Raymond machine fine grinding, the fine powder after grinding mixes with edge runner-wet mill, adds water 10-20%, and pug after calendering is through the ball press pressure ball, the ball warp seasoning that presses 24-48 hour.Dried ball base adopts with the coke of low ashes and the high temperature vertical kiln that coal is fuel and calcines.Calcining temperature 1700-2000 ℃.It is low to calcine out foreign matter content, the synthetic konite sand that degree of calcination is good.
Two, brickmaking technology
Be ground into the particulate material that granularity is 8-5mm, 5-2mm and 2-0mm with synthetic konite sand is broken, grind＜fine powder of 0.088mm with part 2-0mm material, prepare burden: 8-5mm synthesizes konite sand and accounts for 5-10%,
The synthetic konite sand of 5-2mm accounts for 30-40%,
The synthetic konite sand of 2-0mm accounts for 20-30%
The fine powder of＜0.088mm accounts for 20-30%;
Particulate material will be at the feed bin internal heating to 30-60 ℃; Adopt paraffin to make wedding agent, add-on 3-4%; The material for preparing carries out batch mixing with sand mill, and the pug temperature is controlled between 30-50 ℃; Adobe moulding on 800t and 1000t friction press, adobe density is at 3.0g/cm 3More than; After the moulding adobe not drying direct code excess of imports hyperthermia tunnel Kiln to the kiln car burn till, burn till top temperature and be controlled at 1600-1650 ℃, goods burn till the back and soak processings (temperature should guarantee that cured body melts) with cured.
Embodiment 2
Burn till the cured konite brick that soaks, its Chemical Composition weight percent is:
MgO?80％
CaO?17％
SiO 2+Fe 2O 3+Al 2O 3?3％。
Manufacture craft is with embodiment 1.
Embodiment 3
Burn till the cured konite brick that soaks, its Chemical Composition weight percent is:
MgO?77％
CaO?20％
SiO 2+Fe 2O 3+Al 2O 3?3％。
Manufacture craft is with embodiment 1.

Claims (1)

1, a kind ofly burn till the cured konite brick manufacture craft of soaking, its feature such as following steps are followed successively by:
(1) preparation of raw material:
1. respectively wagnerite and rhombspar are carried out light-burnedly, light roasting temperature is lower than 1200 ℃;
2. light dolomite sand is added water 20-40% and carry out Qinghua;
3. postdigestive light dolomite sand and caustic magnesite are prepared burden,
Light dolomite sand: caustic magnesite=30-45: 55-70;
4. prepare and carry out fine grinding behind the material and become fine powder, mix with edge runner-wet mill.Add water 10-20%;
5. with the pug pressure ball of perfecting, seasoning 24-48 hour;
6. dried ball base adopts with the coke of low ashes and the high temperature vertical kiln that coal is fuel and calcines, and calcining temperature is 1700-2000 ℃, is sintered into synthetic konite sand, its index:
MgO?75-80％，CaO?17-22％，D.B≥3.20g/cm 3；
(2) brickmaking technology:
1. will synthesize that konite sand is broken to be ground into the particulate material that granularity is 8-5mm, 5-2mm and 2-0mm, and expect with part 2-0mm to grind＜fine powder of 0.088mm;
2. prepare burden: the synthetic konite sand of 8-5mm accounts for 5-10%,
The synthetic konite sand of 5-2mm accounts for 30-40%,
The synthetic konite sand of 2-0mm accounts for 20-30%,
The fine powder of＜0.088mm accounts for 20-30%;
3. particulate material will be at the feed bin internal heating to 30-60 ℃;
4. adopt paraffin to make wedding agent, add-on 3-4%;
5. the material for preparing carries out batch mixing with sand mill, and the pug temperature is controlled between 30-50 ℃;
9. adobe moulding on 800t and 1000t friction press, adobe density is at 3.0g/cm 3More than;
7. after the moulding adobe not drying direct code excess of imports hyperthermia tunnel Kiln to the kiln car burn till, burn till top temperature and be controlled at 1600-1650 ℃, goods burn till after soak cured processing.
CN00110253A 2000-03-28 2000-03-28 Immersed-in-wax burnt conite brick and its making process Pending CN1266827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN00110253A CN1266827A (en) 2000-03-28 2000-03-28 Immersed-in-wax burnt conite brick and its making process

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Application Number Priority Date Filing Date Title
CN00110253A CN1266827A (en) 2000-03-28 2000-03-28 Immersed-in-wax burnt conite brick and its making process

Publications (1)

Publication Number Publication Date
CN1266827A true CN1266827A (en) 2000-09-20

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531677A (en) * 2012-02-24 2012-07-04 辽宁科技大学 Waterproof method for unburned magnesium calcium carbon brick
CN102701766A (en) * 2012-06-12 2012-10-03 辽宁中兴矿业集团有限公司 High-quality sintered konite brick for refining low-carbon ultra-low carbon steel
CN102765951A (en) * 2012-08-02 2012-11-07 营口青花耐火材料股份有限公司 Magnesium-calcium-titanium-carbon brick and preparation method thereof
WO2015178866A1 (en) * 2014-05-22 2015-11-26 Kumas Manyezit Sanayi A.Ş. Method for synthetic production of base forging mortar for electric arc furnace
CN105481400A (en) * 2015-12-30 2016-04-13 宜兴市集创新材料科技有限公司 Alkali resistant refractory brick
CN105481402A (en) * 2015-12-30 2016-04-13 宜兴市集创新材料科技有限公司 Dolomite refractory brick
CN105622115A (en) * 2015-12-30 2016-06-01 宜兴市集创新材料科技有限公司 Alkaline refractory brick
CN114736004A (en) * 2022-03-29 2022-07-12 何猛 Wet-process ball pressing production process and production line for synthesizing magnesium and aluminum magnesium by light-burned magnesium and calcium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531677A (en) * 2012-02-24 2012-07-04 辽宁科技大学 Waterproof method for unburned magnesium calcium carbon brick
CN102701766A (en) * 2012-06-12 2012-10-03 辽宁中兴矿业集团有限公司 High-quality sintered konite brick for refining low-carbon ultra-low carbon steel
CN102765951A (en) * 2012-08-02 2012-11-07 营口青花耐火材料股份有限公司 Magnesium-calcium-titanium-carbon brick and preparation method thereof
WO2015178866A1 (en) * 2014-05-22 2015-11-26 Kumas Manyezit Sanayi A.Ş. Method for synthetic production of base forging mortar for electric arc furnace
CN105481400A (en) * 2015-12-30 2016-04-13 宜兴市集创新材料科技有限公司 Alkali resistant refractory brick
CN105481402A (en) * 2015-12-30 2016-04-13 宜兴市集创新材料科技有限公司 Dolomite refractory brick
CN105622115A (en) * 2015-12-30 2016-06-01 宜兴市集创新材料科技有限公司 Alkaline refractory brick
CN114736004A (en) * 2022-03-29 2022-07-12 何猛 Wet-process ball pressing production process and production line for synthesizing magnesium and aluminum magnesium by light-burned magnesium and calcium

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