FR2409970A1 - Thin porcelain made from mixt. of bone ash and clay - using boric oxide flux to reduce baking temp. and save fuel (NL 30.5.79) - Google Patents

Thin porcelain made from mixt. of bone ash and clay - using boric oxide flux to reduce baking temp. and save fuel (NL 30.5.79)

Info

Publication number
FR2409970A1
FR2409970A1 FR7833552A FR7833552A FR2409970A1 FR 2409970 A1 FR2409970 A1 FR 2409970A1 FR 7833552 A FR7833552 A FR 7833552A FR 7833552 A FR7833552 A FR 7833552A FR 2409970 A1 FR2409970 A1 FR 2409970A1
Authority
FR
France
Prior art keywords
mixt
cpd
bones
clay
temp
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.)
Granted
Application number
FR7833552A
Other languages
French (fr)
Other versions
FR2409970B1 (en
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.)
US Borax Inc
Original Assignee
United States Borax and Chemical Corp
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 United States Borax and Chemical Corp filed Critical United States Borax and Chemical Corp
Publication of FR2409970A1 publication Critical patent/FR2409970A1/en
Application granted granted Critical
Publication of FR2409970B1 publication Critical patent/FR2409970B1/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
    • C04B33/00—Clay-wares
    • C04B33/24—Manufacture of porcelain or white ware

Abstract

A boron cpd. (a) which is insol. in water is added to the mixt. prior to baking. Cpd. (a) is pref. a borate flux which is esp. combined with bones; and the mixt. may also contain Cornish stone. Cpd. (a) is pref. combined with bones by treating the latter with a source (a1) of B2O3followed by calcining. Source (a1) is esp. aq. boric acid or aq. sodium borate. In the pref. process, the gelatine is removed from animal bones, which are then crushed and dipped in an aq. suspension of B2O3 or a cpd. forming H2O3 on calcining. The bones are then calcined to form ash contg. B2O3. The addn. of the B2O3 reduces the baking temp. and/or time and improves the formation of the microcrystalline calcium phosphate phases. The temp. range for baking is increased and savings in fuel are achieved.
FR7833552A 1977-11-28 1978-11-28 PROCESS FOR THE MANUFACTURE OF ENGLISH PORCELAIN Expired FR2409970B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4947377 1977-11-28

Publications (2)

Publication Number Publication Date
FR2409970A1 true FR2409970A1 (en) 1979-06-22
FR2409970B1 FR2409970B1 (en) 1985-09-27

Family

ID=10452467

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7833552A Expired FR2409970B1 (en) 1977-11-28 1978-11-28 PROCESS FOR THE MANUFACTURE OF ENGLISH PORCELAIN

Country Status (5)

Country Link
JP (1) JPS5493007A (en)
DE (1) DE2851027A1 (en)
FR (1) FR2409970B1 (en)
NL (1) NL188034C (en)
SE (1) SE431446B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1113659A (en) * 1977-11-28 1981-12-08 Raymond Thompson Production of bone china
JPS57209881A (en) * 1981-06-16 1982-12-23 United States Borax Chem Manufacture of clay product using novel flux

Also Published As

Publication number Publication date
JPS6225626B2 (en) 1987-06-04
DE2851027A1 (en) 1979-05-31
NL188034B (en) 1991-10-16
JPS5493007A (en) 1979-07-23
SE7903824L (en) 1980-11-03
SE431446B (en) 1984-02-06
NL7811613A (en) 1979-05-30
NL188034C (en) 1992-03-16
FR2409970B1 (en) 1985-09-27

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Legal Events

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ST Notification of lapse
DA Annulment of decision of lapse
ST Notification of lapse