GB1316666A - Treatment of refractory particles - Google Patents

Treatment of refractory particles

Info

Publication number
GB1316666A
GB1316666A GB2274670A GB2274670A GB1316666A GB 1316666 A GB1316666 A GB 1316666A GB 2274670 A GB2274670 A GB 2274670A GB 2274670 A GB2274670 A GB 2274670A GB 1316666 A GB1316666 A GB 1316666A
Authority
GB
United Kingdom
Prior art keywords
chloride
alkali metal
sodium
refractory particles
metal silicate
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
GB2274670A
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.)
Mitsubishi Heavy Industries Ltd
Showa Tekko KK
Original Assignee
Mitsubishi Heavy Industries Ltd
Showa Tekko KK
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 JP4110869A external-priority patent/JPS5026498B1/ja
Priority claimed from JP8911069A external-priority patent/JPS5020543B1/ja
Application filed by Mitsubishi Heavy Industries Ltd, Showa Tekko KK filed Critical Mitsubishi Heavy Industries Ltd
Publication of GB1316666A publication Critical patent/GB1316666A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
    • B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
    • B22C1/188—Alkali metal silicates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

1316666 Coated refractory particles MITSUBISHI JUKOGYO KK 11 May 1970 [27 May 1969 7 Nov 1969] 22746/70 Heading B2E [Also in Division C3] A method of treating refractory particles to render them free flowing and suitable for use in the manufacture of moulds and cores for casting comprising mixing the refractory particles with an aqueous solution of an alkali metal silicate, in which the molar ratio of silica to alkali metal oxide is in the range 0.7 to 1.1, and a monohydric alcohol to deposit crystalline alkali metal silicate on the surface of the refractory particles. The preferred monohydric alcohol is methanol and the refractory particles may be metal particles or preferably siliceous sand. Optionally an inorganic salt is added to the mixture of aqueous solution of alkali metal silicate and refractory particles to assist deposition of the alkali metal silicate. The inorganic salt may be sodium chloride, potassium chloride, sodium aluminate, manganese sulphate, ammonium ferrous sulphate, potassium nitrate, potassium sulphate, aluminium sulphate, cadmium chloride, cupric chloride, ferrous chloride, chromium chloride, sodium sulphate, ferric chloride, soda lime, barium chloride, sodium bicarbonate, sodium dihydrogen phosphate, sodium nitrate or zinc chloride. The alkali metal silicate may be sodium metasilicate. The aqueous solution of alkali metal silicate may be obtained by using a water glass to which alkali is added to adjust the molar ratio to the desired value.
GB2274670A 1969-05-27 1970-05-11 Treatment of refractory particles Expired GB1316666A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4110869A JPS5026498B1 (en) 1969-05-27 1969-05-27
JP8911069A JPS5020543B1 (en) 1969-11-07 1969-11-07

Publications (1)

Publication Number Publication Date
GB1316666A true GB1316666A (en) 1973-05-09

Family

ID=26380653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2274670A Expired GB1316666A (en) 1969-05-27 1970-05-11 Treatment of refractory particles

Country Status (4)

Country Link
CH (1) CH515082A (en)
FR (1) FR2043692B1 (en)
GB (1) GB1316666A (en)
NL (1) NL7007606A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230269A (en) * 1987-12-08 1990-10-17 Harri Sahari Method for preparation of moulds and cores used in the casting of metals
CN112958745A (en) * 2021-03-01 2021-06-15 曲阜市铸造材料厂 Preparation method of modified sodium silicate sand in cast iron application

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255024A (en) * 1959-05-11 1966-06-07 Morris Bean & Company Molding composition and method
US3074802A (en) * 1959-05-11 1963-01-22 Morris Bean & Company Molding composition and method
FR1357239A (en) * 1962-02-13 1964-04-03 Hitachi Ltd Manufacture of self-hardening molds with exothermic reaction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230269A (en) * 1987-12-08 1990-10-17 Harri Sahari Method for preparation of moulds and cores used in the casting of metals
GB2230269B (en) * 1987-12-08 1991-05-15 Harri Sahari Method for preparation of moulds and cores used in the casting of metals
CN112958745A (en) * 2021-03-01 2021-06-15 曲阜市铸造材料厂 Preparation method of modified sodium silicate sand in cast iron application

Also Published As

Publication number Publication date
NL7007606A (en) 1970-12-01
FR2043692A1 (en) 1971-02-19
CH515082A (en) 1971-11-15
FR2043692B1 (en) 1973-12-21
DE2026114A1 (en) 1971-08-05

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Legal Events

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