KR850007230A - Process for preparing high purity zirconia powder from zircon powder - Google Patents

Process for preparing high purity zirconia powder from zircon powder Download PDF

Info

Publication number
KR850007230A
KR850007230A KR1019850002185A KR850002185A KR850007230A KR 850007230 A KR850007230 A KR 850007230A KR 1019850002185 A KR1019850002185 A KR 1019850002185A KR 850002185 A KR850002185 A KR 850002185A KR 850007230 A KR850007230 A KR 850007230A
Authority
KR
South Korea
Prior art keywords
carbon content
powder
temperature
raw material
metal oxide
Prior art date
Application number
KR1019850002185A
Other languages
Korean (ko)
Other versions
KR900004490B1 (en
Inventor
하시 도시히꼬 후나 (외 2)
Original Assignee
야기 야수히로
가와사끼 세이데쓰 가부시끼 가이샤
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
Priority claimed from JP59065130A external-priority patent/JPS60210530A/en
Priority claimed from JP59095756A external-priority patent/JPS60239325A/en
Priority claimed from JP59254160A external-priority patent/JPS61132517A/en
Application filed by 야기 야수히로, 가와사끼 세이데쓰 가부시끼 가이샤 filed Critical 야기 야수히로
Publication of KR850007230A publication Critical patent/KR850007230A/en
Application granted granted Critical
Publication of KR900004490B1 publication Critical patent/KR900004490B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides

Abstract

내용 없음No content

Description

지르콘 분말로 부터 고순도 지르코니아 분말의 제조방법Process for preparing high purity zirconia powder from zircon powder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 지르콘-탄소 혼합물에서 C/SiO2몰비와, 감압하에 탈실리콘 열처리에 의하여 얻은 지르코니아 분말에 함유된 SiO2양 사이의 관계를 나타낸 그래프. 제2도는 지르콘-탄소 혼합물을 가열할때 아르곤 가스 분위기의 압력과 지르코니아 분말에 함유된 SiO2잔유양 사이의 관계를 나타낸 그래프.1 is a graph showing the relationship between the C / SiO 2 molar ratio in a zircon-carbon mixture and the amount of SiO 2 contained in the zirconia powder obtained by desilicon heat treatment under reduced pressure. 2 is a graph showing the relationship between the pressure of an argon gas atmosphere and the amount of SiO 2 remaining in zirconia powder when a zircon-carbon mixture is heated.

Claims (13)

지르콘 분말과 분말상의 탄소 함유물로된 원료 혼합물을 제조하고, 이 원료 혼합물을 압력이 0.6atm 이하인 비산화 분위기하에 1,300-2,000℃의 온도로 가열하여 지르콘 분말중 산화 규소를 분해하고 기화시켜서 함을 특징으로하는 지르코니아 분말의 제조방법.A raw material mixture of zircon powder and powdery carbonaceous material was prepared, and the raw material mixture was heated to a temperature of 1,300-2,000 ° C. under a non-oxidizing atmosphere having a pressure of 0.6 atm or less to decompose and vaporize silicon oxide in the zircon powder. Method for producing a zirconia powder characterized in that. 청구범위 1에 있어서, 탄소 함유물에 함유되어 있고 비산화 분위기에서 1,000℃이에의 온도에서 기화하지 않는 탄소와, 지르콘 분말에 함유되어 있는 SiO2의 몰비가 0.4-2.0임을 특징으로하는 제조방법.The method according to claim 1, wherein the molar ratio of carbon contained in the carbon content and not evaporated at a temperature of 1,000 ° C. in a non-oxidizing atmosphere, and SiO 2 contained in the zircon powder is 0.4-2.0. 청구범위 2에 있어서, 압력이 0.6atm이하임을 특징으로 하는 제조방법.The method of claim 2 wherein the pressure is 0.6 atm or less. 청구범위 3에 있어서, 온도가 1,400-1,800℃임을 특징으로하는 제조방법.The method according to claim 3, wherein the temperature is 1,400-1,800 ° C. 청구범위 1에 있어서, 감압 가열 단계의 생성물인 지르코니아 분말을 산화 분위기하에서 가열하여 상기 생성물에 함유된 불필요한 지르코늄 화합물을 산화시킴을 특징으로하는 제조방법.The method according to claim 1, wherein the zirconia powder, which is a product of the reduced pressure heating step, is heated under an oxidizing atmosphere to oxidize unnecessary zirconium compounds contained in the product. 청구범위 5에 있어서, 산화 분위기에서 가열을 600-900℃의 온도로 행함을 특징으로 하는 제조방법.Method according to claim 5, characterized in that the heating is carried out in an oxidizing atmosphere at a temperature of 600-900 ° C. 청구범위 1에 있어서, 원료 혼합물이, 지르코니아 와 고용체를 형성하고 지르코니아의 안정화제로서 작용하는 최소한 하나의 금속산화물 또는 감압 가열 단계에서 상기 온도이하의 온도에서 상기 금속 산화물로 변환하는 금속염으로 이루어짐을 특징으로하는 제조방법.The method according to claim 1, characterized in that the raw material mixture consists of at least one metal oxide which forms a solid solution with zirconia and acts as a stabilizer of zirconia or a metal salt which converts the metal oxide at a temperature below the temperature in a reduced pressure heating step. Manufacturing method. 청구범위 7에 있어서, 최소한 하나의 금속 산화물을 CaO, MgO, Y2O3와CeO|3에서 선택함을 특징으로 하는 제조방법.The method of claim 7 wherein at least one metal oxide is selected from CaO, MgO, Y 2 O 3 and CeO | A method of manufacturing comprising the steps of 3 . 청구범위 8에 있어서, 최소한 하나의 금속 산화물의 총량이 지르콘 분말에 함유된 ZrO2의 0.5-20몰%임을 특징으로하는 제조방법Method according to claim 8, characterized in that the total amount of at least one metal oxide is 0.5-20 mole% of ZrO 2 contained in the zircon powder. 청구범위 1에 있어서, 탄소 함유물을 카아본블랙, 석유코우크스, 석탄코우크스, 석유피치, 석탄피치, 페놀수지, 폴리비닐 알콜과 폴리에틸렌에서 선택함을 특징으로하는 제조방법.The method according to claim 1, wherein the carbon content is selected from carbon black, petroleum coke, coal coke, petroleum pitch, coal pitch, phenol resin, polyvinyl alcohol and polyethylene. 청구범위 10에 있어서, 최소한 일부분의 탄소 함유물을 유동 상태에 있게하여 원료 혼합물을 제조함을 특징으로하는 제조방법.A process according to claim 10, characterized in that the raw material mixture is prepared by leaving at least a portion of the carbon content in a fluid state. 청구범위 11에 있어서, 최소한 일부분의 탄소함유물을 가열하에 유동시킴을 특징으로하는 제조방법.Process according to claim 11, characterized in that at least a portion of the carbon content is flowed under heating. 청구범위 11에 있어서, 최소한 일부분의 탄소 함유물을, 탄소 함유물용 용제를 사용하여 유동시킴을 특징으로 하는 제조방법.Process according to claim 11, characterized in that at least a portion of the carbon content is flowed using a solvent for the carbon content. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850002185A 1984-04-03 1985-04-01 Process for production of high purity zirconia powder from zircon powder KR900004490B1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP59065130A JPS60210530A (en) 1984-04-03 1984-04-03 Production of zirconium oxide powder
JP59-65130 1984-04-03
JP65130 1984-04-03
JP95757 1984-05-15
JP254160 1984-05-15
JP254161 1984-05-15
JP59095756A JPS60239325A (en) 1984-05-15 1984-05-15 Manufacture of zirconia powder
JP95756 1984-12-03
JP59254160A JPS61132517A (en) 1984-12-03 1984-12-03 Production of high-purity zirconia powder

Publications (2)

Publication Number Publication Date
KR850007230A true KR850007230A (en) 1985-12-02
KR900004490B1 KR900004490B1 (en) 1990-06-28

Family

ID=27298674

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850002185A KR900004490B1 (en) 1984-04-03 1985-04-01 Process for production of high purity zirconia powder from zircon powder

Country Status (1)

Country Link
KR (1) KR900004490B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000017753A (en) * 1999-10-28 2000-04-06 김용겸 The Prevention Method against Solidification of KCl
KR20220006902A (en) * 2020-07-09 2022-01-18 한국재료연구원 Method for manufacturing ZrC having a controlled size, shape, and porosity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000017753A (en) * 1999-10-28 2000-04-06 김용겸 The Prevention Method against Solidification of KCl
KR20220006902A (en) * 2020-07-09 2022-01-18 한국재료연구원 Method for manufacturing ZrC having a controlled size, shape, and porosity

Also Published As

Publication number Publication date
KR900004490B1 (en) 1990-06-28

Similar Documents

Publication Publication Date Title
KR880002775A (en) Self-supporting ceramic composites and its manufacturing method
KR890003644A (en) Oxidation resistant alumina-silica molded bodies containing silicon carbide and carbon
KR850007230A (en) Process for preparing high purity zirconia powder from zircon powder
Gesmundo Mechanism of the simultaneous formation of oxide and sulfide at the scale surface during the oxidation of a pure metal in mixed atmospheres
KR890003475A (en) Aluminum nitride sintered body and its manufacturing method
US6129887A (en) Process to produce silicon carbide fibers using a controlled concentration of boron oxide vapor
KR880011044A (en) Method for producing a powdered article by isostatic pressing
US4374897A (en) Chromium oxide-based sintered bodies and process for production thereof
US3206318A (en) Refractory material
GB1051563A (en)
ATE66901T1 (en) MANUFACTURE OF CERAMIC MATERIALS.
KR910012200A (en) Manufacturing method of carbon material raw material having self-sintering
Chien et al. Thermal conductivity of fireclay and high-alumina refractory brick
JPS57205443A (en) Room temperature curing composition
Vishnevskii et al. The Effect of Phase Transformations on the Creep of Mullitocorundum Refractories
US3817726A (en) Process for cracking or steam reforming hydrocarbons using an alkali polyaluminate catalyst
US1198033A (en) Corrosion-resisting refractory.
GB1411964A (en) Heat storage bricks and method of production thereof
EP0105978B1 (en) Improvements in or relating to the formation of profiled ceramic bodies
Ueltz Sintering reactions in MgO‐TiC mixtures
SU547424A1 (en) Fireproof thermal insulation material
Levitskii THERMODYNAMICS OF INTERACTION OF CERTAIN REFRACTORY OXIDES OF TYPE R 2 O 3 WITH TUNGSTEN AND ITS LOWER OXIDE
Persson et al. A New Approach to the Interpretation of the Oxidation Processes in Si sub 2 N sub 2 Based Ceramics
JPH032805B2 (en)
JPS57187039A (en) Activity improving method for metallic oxide catalyst containing tellurium

Legal Events

Date Code Title Description
G160 Decision to publish patent application
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19970624

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee