CN105669228A - Spray coating for making lining of iron-smelting blast furnace - Google Patents

Spray coating for making lining of iron-smelting blast furnace Download PDF

Info

Publication number
CN105669228A
CN105669228A CN201610064402.7A CN201610064402A CN105669228A CN 105669228 A CN105669228 A CN 105669228A CN 201610064402 A CN201610064402 A CN 201610064402A CN 105669228 A CN105669228 A CN 105669228A
Authority
CN
China
Prior art keywords
blast furnace
bauxite
granularity
powder
lining
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
Application number
CN201610064402.7A
Other languages
Chinese (zh)
Inventor
康少涛
康晓旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gongyi Hongyu Refractories Co Ltd
Original Assignee
Gongyi Hongyu Refractories Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gongyi Hongyu Refractories Co Ltd filed Critical Gongyi Hongyu Refractories Co Ltd
Priority to CN201610064402.7A priority Critical patent/CN105669228A/en
Publication of CN105669228A publication Critical patent/CN105669228A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Products (AREA)

Abstract

The invention discloses a spray coating for making a lining of an iron-smelting blast furnace. The spray coating for making the lining of the iron-smelting blast furnace comprises raw materials in percentage by weight as follows: 14%-16% of bauxite with the particle size of 0-1 mm, 18%-22% of bauxite with the particle size of 1-3 mm, 3%-6% of bauxite with the particle size of 180 meshes, 18%-20% of emery powder with the particle size of 180 meshes, 18%-22% of mullite powder, 3%-5% of alumina powder, 3%-5% of silica powder, 17%-19% of Secar71, 0.1%-0.3% of explosionproof fibers, 0.2%-0.5% of aluminum powder, 0.1%-0.3% of sodium tripolyphosphate and 0.2%-0.5% of sodium hexametaphosphate. The spray coating for making the lining of the iron-smelting blast furnace has excellent high-temperature resistance and corrosion resistance and higher compression strength and breaking strength, the linear change rate is low, the service life is long, and the requirement for the spray coating for making the lining of the iron-smelting blast furnace can be completely met.

Description

Blast furnace makes lining spray paint
Technical field
The invention belongs to technical field of refractory materials, be specifically related to a kind of blast furnace and make lining spray paint.
Background technology
Prolonging campaign is the efficient important guarantee of iron and steel enterprise. Along with the development of blast furnace technology, furnace lining refractory material uses environment day by day harsh, and prolonging campaignization requires refractory material is proposed bigger challenge. In recent years, China's blast furnace is big or middle have been repaiied spray paint commonly used and has made lining and namely instead of sizing fire resistive material product with amorphous refractory, thus what greatly shorten blast furnace builds the time by laying bricks or stones, also shorten the maintenance time of blast furnace lining, and reduce maintenance cost. Although newly-built blast furnace uses molded article and uses compared with spray paint, the former phase uses the time longer, but with the building time of blast furnace, easy to maintenance compare, the latter is far superior to the former. Moreover, along with the development of refractory material scientific progress and intelligent machine technology, blastfurnace lining repair technology is more and more perfect, and service life is more and more longer. Blast furnace requires that furnace lining should have high temperature abrasion resistance and high temperature resistance sour gas aggressivity. Blastfurnace lining repair spray paint is gone into operation from constructing to needs have high adhesive rate, big adhesion strength and relatively low water content, to ensure not produce to collapse in spraying process, baking process does not crack and peels off, the heating processes such as low temperature, middle temperature, high temperature remain enough intensity, remains volume stability. Therefore, a kind of new blast furnace lining refractory material high temperature resistant, corrosion resistant is studied significant to extending the life of the blast furnace.
Summary of the invention
It is an object of the invention to provide a kind of blast furnace and make lining spray paint. This blast furnace is made lining spray paint and is had excellent high temperature resistant, decay resistance, long service life, it is possible to ensure the safe operation of blast furnace.
For realizing above-mentioned goal of the invention, the technical solution used in the present invention is:
A kind of blast furnace makes lining spray paint, represent with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 14%-16% of 0-1mm, granularity is the bauxite 18%-22% of 1-3mm, granularity is the bauxite 3%-6% of 180 orders, granularity is the schmigel 18%-20% of 180 orders, mullite powder 18%-22%, alumina powder 3%-5%, silicon powder 3%-5%, Secar71 (Lafarge cement) 17%-19%, explosion-proof fiber 0.1%-0.3%, metallic aluminium powder 0.2%-0.5%, sodium tripolyphosphate 0.1%-0.3% and sodium hexametaphosphate 0.2%-0.5%.
Lining spray paint is made according to above-mentioned blast furnace, representing with weight percentage, described blast furnace is made the raw material composition of lining spray paint and is preferably: granularity is the bauxite 15% of 0-1mm, granularity to be the bauxite 20% of 1-3mm, granularity the be bauxite 3% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 20%, alumina powder 3%, silicon powder 3%, Secar71 (Lafarge cement) 17%, explosion-proof fiber 0.2%, metallic aluminium powder 0.3%, sodium tripolyphosphate 0.2% and sodium hexametaphosphate 0.3%.
Lining spray paint, Al in described Secar71 is made according to above-mentioned blast furnace2O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.
Described blast furnace makes the preparation method of lining spray paint: the raw material composition and ratio making lining spray paint by above-mentioned blast furnace weighs each raw material for standby, is then stirred by addition blender, namely obtains blast furnace of the present invention and make lining spray paint.
The positive beneficial effect that the present invention obtains:
(1) present invention is with bauxite, schmigel, mullite powder for primary raw material, with Secar71 for additional materials, add the blast furnace that silicon powder, alumina powder, explosion-proof fiber, metallic aluminium powder and Quadrafos prepare simultaneously and make lining spray paint, there is excellent high temperature resistant, decay resistance, and there is higher compressive resistance and rupture strength, Linear change rate is little, service life is up to 2-3, the blastfurnace lining repair requirement to spray paint can be fully met, it is possible to ensure the safe operation of blast furnace. Blast furnace of the present invention makes the properties of product detection parameter index of lining spray paint in Table 1.
(2) blast furnace of the present invention is made in lining spray paint and is added with explosion-proof fiber and polymeric phosphate so that the spray paint prepared has good explosion-proof performance, thermal shock resistance and scour resistance.
(3) blast furnace of the present invention makes lining spray paint formula simply, and low in raw material price, production cost is low, has significant economic benefit.
Table 1 blast furnace of the present invention makes the performance detection parameter of lining spray paint
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but is not limiting as present disclosure.
Embodiment 1:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 14% of 0-1mm, granularity to be the bauxite 20% of 1-3mm, granularity the be bauxite 5% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 18%, alumina powder 3%, silicon powder 4%, Secar7117%, explosion-proof fiber 0.2%, metallic aluminium powder 0.3%, sodium tripolyphosphate 0.2% and sodium hexametaphosphate 0.3%. Wherein, Al in described Secar712O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.
Embodiment 2:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 15% of 0-1mm, granularity to be the bauxite 20% of 1-3mm, granularity the be bauxite 3% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 20%, alumina powder 3%, silicon powder 3%, Secar7117%, explosion-proof fiber 0.2%, metallic aluminium powder 0.3%, sodium tripolyphosphate 0.2% and sodium hexametaphosphate 0.3%. Wherein, Al in described Secar712O3Content be 68%-71%;SiO in described silicon powder2Content >=96%.
Embodiment 3:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 16% of 0-1mm, granularity to be the bauxite 18% of 1-3mm, granularity the be bauxite 3% of 180 orders, granularity are the schmigel 20% of 180 orders, mullite powder 18%, alumina powder 4%, silicon powder 3%, Secar7117%, explosion-proof fiber 0.1%, metallic aluminium powder 0.4%, sodium tripolyphosphate 0.1% and sodium hexametaphosphate 0.4%. Wherein, Al in described Secar712O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.
Embodiment 4:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 14% of 0-1mm, granularity to be the bauxite 22% of 1-3mm, granularity the be bauxite 3% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 18%, alumina powder 3%, silicon powder 3%, Secar7118%, explosion-proof fiber 0.3%, metallic aluminium powder 0.2%, sodium tripolyphosphate 0.3% and sodium hexametaphosphate 0.2%. Wherein, Al in described Secar712O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.
Embodiment 5:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 14% of 0-1mm, granularity to be the bauxite 18% of 1-3mm, granularity the be bauxite 6% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 18%, alumina powder 3%, silicon powder 3%, Secar7119%, explosion-proof fiber 0.1%, metallic aluminium powder 0.5%, sodium tripolyphosphate 0.2% and sodium hexametaphosphate 0.2%. Wherein, Al in described Secar712O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.
Embodiment 6:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 14% of 0-1mm, granularity to be the bauxite 18% of 1-3mm, granularity the be bauxite 3% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 22%, alumina powder 4%, silicon powder 3%, Secar7117%, explosion-proof fiber 0.2%, metallic aluminium powder 0.2%, sodium tripolyphosphate 0.1% and sodium hexametaphosphate 0.5%. Wherein, Al in described Secar712O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.
Embodiment 7:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 14% of 0-1mm, granularity to be the bauxite 18% of 1-3mm, granularity the be bauxite 3% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 18%, alumina powder 5%, silicon powder 5%, Secar7118%, explosion-proof fiber 0.2%, metallic aluminium powder 0.3%, sodium tripolyphosphate 0.2% and sodium hexametaphosphate 0.3%. Wherein, Al in described Secar712O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.
Embodiment 8:
A kind of blast furnace makes lining spray paint, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 15% of 0-1mm, granularity to be the bauxite 18% of 1-3mm, granularity the be bauxite 5% of 180 orders, granularity are the schmigel 20% of 180 orders, mullite powder 18%, alumina powder 3%, silicon powder 3%, Secar7117%, explosion-proof fiber 0.1%, metallic aluminium powder 0.2%, sodium tripolyphosphate 0.2% and sodium hexametaphosphate 0.5%.Wherein, Al in described Secar712O3Content be 68%-71%; SiO in described silicon powder2Content >=96%.

Claims (4)

1. a blast furnace makes lining spray paint, it is characterized in that, represent with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 14%-16% of 0-1mm, granularity is the bauxite 18%-22% of 1-3mm, granularity is the bauxite 3%-6% of 180 orders, granularity is the schmigel 18%-20% of 180 orders, mullite powder 18%-22%, alumina powder 3%-5%, silicon powder 3%-5%, Secar7117%-19%, explosion-proof fiber 0.1%-0.3%, metallic aluminium powder 0.2%-0.5%, sodium tripolyphosphate 0.1%-0.3% and sodium hexametaphosphate 0.2%-0.5%.
2. blast furnace according to claim 1 makes lining spray paint, it is characterized in that, representing with weight percentage, described blast furnace is made the raw material of lining spray paint and is consisted of: granularity is the bauxite 15% of 0-1mm, granularity to be the bauxite 20% of 1-3mm, granularity the be bauxite 3% of 180 orders, granularity are the schmigel 18% of 180 orders, mullite powder 20%, alumina powder 3%, silicon powder 3%, Secar7117%, explosion-proof fiber 0.2%, metallic aluminium powder 0.3%, sodium tripolyphosphate 0.2% and sodium hexametaphosphate 0.3%.
3. blast furnace according to claim 1 and 2 makes lining spray paint, it is characterised in that Al in described Secar712O3Content be 68%-71%.
4. blast furnace according to claim 1 and 2 makes lining spray paint, it is characterised in that SiO in described silicon powder2Content >=96%.
CN201610064402.7A 2016-01-29 2016-01-29 Spray coating for making lining of iron-smelting blast furnace Pending CN105669228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610064402.7A CN105669228A (en) 2016-01-29 2016-01-29 Spray coating for making lining of iron-smelting blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610064402.7A CN105669228A (en) 2016-01-29 2016-01-29 Spray coating for making lining of iron-smelting blast furnace

Publications (1)

Publication Number Publication Date
CN105669228A true CN105669228A (en) 2016-06-15

Family

ID=56304377

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610064402.7A Pending CN105669228A (en) 2016-01-29 2016-01-29 Spray coating for making lining of iron-smelting blast furnace

Country Status (1)

Country Link
CN (1) CN105669228A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106187246A (en) * 2016-07-25 2016-12-07 宜兴市中环耐火材料有限公司 A kind of anti-rotten pottery putty
CN106699205A (en) * 2016-12-26 2017-05-24 中国京冶工程技术有限公司 Sol-bonded wet-process spray coating for blast furnace lining and preparation method of sol-bonded wet spray coating
CN107746216A (en) * 2017-11-06 2018-03-02 陈兴 A kind of insulating moulding coating of exhaust opening
CN109824371A (en) * 2019-03-28 2019-05-31 武汉科技大学 A kind of gasification furnace work lining fire-proof spray coating and preparation method thereof
CN110563470A (en) * 2019-08-23 2019-12-13 河南恒耐尔耐火材料有限公司 High-strength explosion-proof spray coating and preparation method thereof
CN113024264A (en) * 2019-12-09 2021-06-25 上海梅山钢铁股份有限公司 Heat-insulating coating for permanent layer of torpedo ladle
CN114031379A (en) * 2021-11-05 2022-02-11 瑞泰科技股份有限公司 Aluminum-silicon high-temperature spray coating

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101239829A (en) * 2008-03-11 2008-08-13 郑州市鑫磊冶金材料有限公司 High-performance fire-resistant abrasion-proof composite material
CN101857446A (en) * 2010-05-18 2010-10-13 武汉钢铁(集团)公司 Refractory castable for desulfurization stirrer
CN102674859A (en) * 2012-05-24 2012-09-19 洛阳理工学院 Refractory castable for kilneye and kiln head cover of rotary kiln
CN103172397A (en) * 2013-04-17 2013-06-26 丁剑 High-strength anti-corrosion wear-resistant castable and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101239829A (en) * 2008-03-11 2008-08-13 郑州市鑫磊冶金材料有限公司 High-performance fire-resistant abrasion-proof composite material
CN101857446A (en) * 2010-05-18 2010-10-13 武汉钢铁(集团)公司 Refractory castable for desulfurization stirrer
CN102674859A (en) * 2012-05-24 2012-09-19 洛阳理工学院 Refractory castable for kilneye and kiln head cover of rotary kiln
CN103172397A (en) * 2013-04-17 2013-06-26 丁剑 High-strength anti-corrosion wear-resistant castable and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
G.B.罗森伯格: "《美国耐火材料》", 30 November 1981, 冶金工业出版社 *
胡宝玉等: "《特种耐火材料实用技术手册》", 30 June 2004, 冶金工业出版社 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106187246A (en) * 2016-07-25 2016-12-07 宜兴市中环耐火材料有限公司 A kind of anti-rotten pottery putty
CN106699205A (en) * 2016-12-26 2017-05-24 中国京冶工程技术有限公司 Sol-bonded wet-process spray coating for blast furnace lining and preparation method of sol-bonded wet spray coating
CN106699205B (en) * 2016-12-26 2019-12-20 中国京冶工程技术有限公司 Sol-combined blast furnace lining wet-process spray coating and preparation method thereof
CN107746216A (en) * 2017-11-06 2018-03-02 陈兴 A kind of insulating moulding coating of exhaust opening
CN109824371A (en) * 2019-03-28 2019-05-31 武汉科技大学 A kind of gasification furnace work lining fire-proof spray coating and preparation method thereof
CN110563470A (en) * 2019-08-23 2019-12-13 河南恒耐尔耐火材料有限公司 High-strength explosion-proof spray coating and preparation method thereof
CN113024264A (en) * 2019-12-09 2021-06-25 上海梅山钢铁股份有限公司 Heat-insulating coating for permanent layer of torpedo ladle
CN114031379A (en) * 2021-11-05 2022-02-11 瑞泰科技股份有限公司 Aluminum-silicon high-temperature spray coating
CN114031379B (en) * 2021-11-05 2024-01-30 瑞泰科技股份有限公司 Aluminum-silicon high-temperature spray paint

Similar Documents

Publication Publication Date Title
CN105669228A (en) Spray coating for making lining of iron-smelting blast furnace
CN101913888B (en) Pouring material for forsterite tundish slag stop wall and production process thereof
CN100467426C (en) Silicon carbide crusting resistant pouring material and preparation method thereof
WO2008098421A1 (en) High temperature resistant inorganic composite adhesive
CN104788115A (en) Fireproof spraying coating for steel ladle working lining and preparation method of fireproof spraying coating
CN100410209C (en) Pouring material for torpedo tank liner repairing
CN104909772B (en) Aluminous cement combined corundum matter castable containing compound additive and preparation method thereof
CN104446547B (en) A kind of medium-frequency induction furnace furnace lining material and preparation method thereof and using method
CN103011851A (en) Mullite-silicon-corundum abrasive brick and manufacturing method thereof
CN103360094B (en) Fireproof oxygen blowing tube coating
CN104446541B (en) A kind of cement rotary kiln clinkering zone that strengthens hangs coating and the application thereof of kliner coating performance
CN104876609A (en) Thermal-shock resistant refractory brick
CN104876606A (en) Refractory brick for kilns
CN105254318B (en) A kind of ferro-magnesium-aluminum spinelle coal injection pipe prefabricated component
CN109721342A (en) A kind of tapping pouring refractories and preparation method thereof
CN103771888B (en) A kind of 2500D/T Special castable for kiln outlet
CN104355643B (en) A kind of 5000T cement kiln coal injection pipe dedicated pouring material
CN107057423A (en) A kind of intermediate frequency furnace coil special coating
CN102634639B (en) Slag-iron separating agent
CN103073316B (en) Gunning mix for main iron runner of blast furnace and preparation method thereof
CN102329141A (en) Silicon-carbide composite corundum mullite brick
CN104876610A (en) Production method of refractory brick for kilns
CN107043246A (en) A kind of hot semidry method spray paint of mixed iron blast
CN104876604A (en) Brick resistant to abrasion and corrosion
CN102329139A (en) Integrally cast calcium carbide furnace door

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20160615