GB809283A - Process for the regeneration of waste sand from cast off moulds and cores produced from chemically hardened mixtures - Google Patents

Process for the regeneration of waste sand from cast off moulds and cores produced from chemically hardened mixtures

Info

Publication number
GB809283A
GB809283A GB14590/55A GB1459055A GB809283A GB 809283 A GB809283 A GB 809283A GB 14590/55 A GB14590/55 A GB 14590/55A GB 1459055 A GB1459055 A GB 1459055A GB 809283 A GB809283 A GB 809283A
Authority
GB
United Kingdom
Prior art keywords
silicate
sand
moulds
regeneration
cast
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
GB14590/55A
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.)
LEV PETRZELA
Original Assignee
LEV PETRZELA
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 LEV PETRZELA filed Critical LEV PETRZELA
Publication of GB809283A publication Critical patent/GB809283A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/18—Plants for preparing mould materials
    • B22C5/185—Plants for preparing mould materials comprising a wet reclamation step

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

In order to recover both sodium-silicate and sand from the debris of used foundry moulds and cores, the debris is heated to a temperature above 400 DEG C., or to about 100 DEG C. at a pressure above atmosphere of more than 0.1 kg. per sq. cm., to cause the hydrated-silica to combine with the alkali metal-carbonate to form a mixture of silicate and sand, and then the silicate is dissolved in water hydrothermically at a temperature above 100 DEG C. at a pressure of more than 0.1 kg. per sq. cm. above atmospheric. The solution may be effected in a solution of alkaline substances, e.g. alkaline hydroxides or alkali metal silicates, in the presence of water or steam, if the ratio of silicate in the sand as regenerated is too low for re-use. The regenerated mixture is suitable for use in the process described in Specification 654,817, [Group XXII].
GB14590/55A 1954-05-21 1955-05-20 Process for the regeneration of waste sand from cast off moulds and cores produced from chemically hardened mixtures Expired GB809283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS809283X 1954-05-21

Publications (1)

Publication Number Publication Date
GB809283A true GB809283A (en) 1959-02-18

Family

ID=5455696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14590/55A Expired GB809283A (en) 1954-05-21 1955-05-20 Process for the regeneration of waste sand from cast off moulds and cores produced from chemically hardened mixtures

Country Status (1)

Country Link
GB (1) GB809283A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016129896A (en) * 2015-01-14 2016-07-21 旭有機材工業株式会社 Regeneration method for recovered casting sand
JP2016129897A (en) * 2015-01-14 2016-07-21 旭有機材工業株式会社 Regeneration method of recovered casting sand
CN109158528A (en) * 2018-09-30 2019-01-08 合肥仁创铸造材料有限公司 A kind of regeneration method of inorganic old sand
EP3620244A1 (en) * 2018-09-07 2020-03-11 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Method of preparing a particulate refractory composition for use in the manufacture of foundry moulds and cores, corresponding uses, and reclamation mixture for thermal treatment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016129896A (en) * 2015-01-14 2016-07-21 旭有機材工業株式会社 Regeneration method for recovered casting sand
JP2016129897A (en) * 2015-01-14 2016-07-21 旭有機材工業株式会社 Regeneration method of recovered casting sand
EP3620244A1 (en) * 2018-09-07 2020-03-11 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Method of preparing a particulate refractory composition for use in the manufacture of foundry moulds and cores, corresponding uses, and reclamation mixture for thermal treatment
WO2020049174A1 (en) 2018-09-07 2020-03-12 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Method of preparing a particulate refractory composition for use in the manufacture of foundry moulds and cores, corresponding uses, and reclamation mixture for thermal treatment
CN112703071A (en) * 2018-09-07 2021-04-23 胡坦斯·阿尔伯图斯化学厂有限公司 Method for producing a granulated refractory composition for producing casting molds and cores, corresponding use and regeneration mixture for heat treatment
US11311931B2 (en) 2018-09-07 2022-04-26 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Method of preparing a particulate refractory composition for use in the manufacture of foundry moulds and cores, corresponding uses, and reclamation mixture for thermal treatment
CN109158528A (en) * 2018-09-30 2019-01-08 合肥仁创铸造材料有限公司 A kind of regeneration method of inorganic old sand

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