GB1481583A - Methods of making magnesium oxidechrome ore refractory shapes - Google Patents

Methods of making magnesium oxidechrome ore refractory shapes

Info

Publication number
GB1481583A
GB1481583A GB21694/75A GB2169475A GB1481583A GB 1481583 A GB1481583 A GB 1481583A GB 21694/75 A GB21694/75 A GB 21694/75A GB 2169475 A GB2169475 A GB 2169475A GB 1481583 A GB1481583 A GB 1481583A
Authority
GB
United Kingdom
Prior art keywords
cao
mixture
sio
oxidechrome
ore
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.)
Expired
Application number
GB21694/75A
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.)
General Refractories Co
Original Assignee
General Refractories Co
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 General Refractories Co filed Critical General Refractories Co
Publication of GB1481583A publication Critical patent/GB1481583A/en
Expired 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
    • C04B35/01—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
    • C04B35/04—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
    • C04B35/043—Refractories from grain sized mixtures
    • C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

1481583 Magnesium oxide-chrome ore refractory shapes GENERAL REFRACTORIES CO 21 May 1975 [3 June 1974] 21694/75 Heading C1J A method of making a magnesium oxidechrome ore refractory shape involves admixing 40-80% of dead-burned magnesite (periclase) with 60-20% of chrome ore, the mixture containing fines and a combined total of up to 5% of CaO and SiO 2 by weight, the weight ratio of the CaO to SiO 2 being at least 1 :1, forming the mixture into a refractory shape and firing the shape at a temperature of at least 2950‹ F. The CaO content in the mixture may be increased by the addition of a calcium compound decomposable to CaO at the firing temperature. The maximum content of CaO and SiO 2 in the mixture is preferably not more than 3À5% and the ratio of CaO : SiO 2 not over 3 : 1. The fines in the mixture passing through a 100 mesh Tyler screen may amount to 20-45% of the total mixture by weight and the weight ratio of chrome ore to magnesite in the fines at least 1 : 1, preferably 2 : 1.
GB21694/75A 1974-06-03 1975-05-21 Methods of making magnesium oxidechrome ore refractory shapes Expired GB1481583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47608574A 1974-06-03 1974-06-03

Publications (1)

Publication Number Publication Date
GB1481583A true GB1481583A (en) 1977-08-03

Family

ID=23890452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21694/75A Expired GB1481583A (en) 1974-06-03 1975-05-21 Methods of making magnesium oxidechrome ore refractory shapes

Country Status (9)

Country Link
JP (1) JPS517004A (en)
AT (1) AT352606B (en)
BR (1) BR7503456A (en)
DE (1) DE2524646A1 (en)
FR (1) FR2275421A1 (en)
GB (1) GB1481583A (en)
IT (1) IT1038375B (en)
SE (1) SE7506329L (en)
ZA (1) ZA753376B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112811914A (en) * 2021-03-08 2021-05-18 沈阳大学 Method for preparing nano chromium-magnesium spinel by using chromium sludge and magnesium desulphurization slag

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419408B2 (en) * 1971-09-25 1979-07-14
JPS4944087A (en) * 1972-07-04 1974-04-25
JPS5034043B2 (en) * 1973-07-03 1975-11-05
SE7407501L (en) * 1974-06-07 1975-12-08 Lidkoepings Mekaniska Verkstad FOR CHANGING GRINDING WHEELS ON A GRINDING SPINDLE ADAPTED GRINDING MACHINE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112811914A (en) * 2021-03-08 2021-05-18 沈阳大学 Method for preparing nano chromium-magnesium spinel by using chromium sludge and magnesium desulphurization slag

Also Published As

Publication number Publication date
DE2524646A1 (en) 1975-12-04
AT352606B (en) 1979-09-25
BR7503456A (en) 1976-05-25
FR2275421A1 (en) 1976-01-16
ZA753376B (en) 1976-04-28
SE7506329L (en) 1975-12-04
FR2275421B1 (en) 1979-06-08
IT1038375B (en) 1979-11-20
ATA405975A (en) 1979-02-15
JPS517004A (en) 1976-01-21

Similar Documents

Publication Publication Date Title
IE41507L (en) Magnesium aluminium spinel
GB1481583A (en) Methods of making magnesium oxidechrome ore refractory shapes
GB1503278A (en) Gate valves made of refractory basic material
GB1387468A (en) Basic refractory shapes
GB1203067A (en) Method of producing highly gas-permeable refractory material having open pores
GB1236048A (en) Refractory bricks
IL42200A (en) Process of producing sintered magnesia
GB1327749A (en) Process of producing a sintered refractory material
GB1485728A (en) Method for making magnesite grain
GB1282206A (en) Process of manufacturing refractory magnesia-chrome and chrome-magnesia bricks
US3288617A (en) Refractory brick of burnt magnesia and process of manufacture
GB1137143A (en) Burnt basic refractory brick impregnated with carbon and process for its production
GB1445696A (en) Process of making burnt refractory bricks
GB1428154A (en) Slag composition
US3753747A (en) Hydration resistance for dolomite grain
GB1396525A (en) Process of producing refractory products based on mgo and cr2o3
GB1411964A (en) Heat storage bricks and method of production thereof
GB1348196A (en) Refractory materials and their method of manufacture
GB1211312A (en) Burned phosphate bonded magnesite-chrome ore bricks
SE7514635L (en) PROCEDURE FOR THE MANUFACTURE OF FIRE, FIRE-RESISTANT SHAPE BODIES
GB1506656A (en) High fired basic direct bonded magnesia-chrome ore refractory shapes and their method of manufacture
GB1256915A (en)
GB1135822A (en) Process of manufacturing unfired refractory bricks and compositions of magnesia-chromeand chrome-magnesia
GB1281154A (en) Process for producing a highly refractory material
GB1145340A (en) Refractory product, more particularly sinter, and process for the manufacture thereof

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee