GB1438340A - Process for production of alkali metal chromates - Google Patents

Process for production of alkali metal chromates

Info

Publication number
GB1438340A
GB1438340A GB6019973A GB6019973A GB1438340A GB 1438340 A GB1438340 A GB 1438340A GB 6019973 A GB6019973 A GB 6019973A GB 6019973 A GB6019973 A GB 6019973A GB 1438340 A GB1438340 A GB 1438340A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
production
chromate
leaching
moles
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
GB6019973A
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.)
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
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 Nippon Chemical Industrial Co Ltd filed Critical Nippon Chemical Industrial Co Ltd
Priority to GB6019973A priority Critical patent/GB1438340A/en
Publication of GB1438340A publication Critical patent/GB1438340A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/14—Chromates; Bichromates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

1438340 Alkali metal chromates NIPPON CHEMICAL INDUSTRIAL CO Ltd 31 Dec 1973 60199/73 Heading C1A A process for the production of an alkali metal chromate from a chromic ore comprises heating together at a temperature of from 400‹ to 700‹ C. (a) a chrome ore, (b) more than 2 moles of an alkali metal hydroxide per mole of Cr 2 O 5 present in the chrome ore and (c) from 1À0-2À5 moles on the same basis of an alkali metal salt of a nitrogen oxyacid, to react the reactants in the molten state to form an alkali metal chromate, and leaching with water or a dilute solution of an alkali metal chromate. The residue obtained after leaching may be reslurried and treated with a nitrogen oxygen, to recover the alkali metal content as a salt of said nitrogen oxyacid, to be recycled above. Silica may be added such that the Al 2 O 3 /SiO 2 ratio is between 1 : 1 and 1 : 3.
GB6019973A 1973-12-31 1973-12-31 Process for production of alkali metal chromates Expired GB1438340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB6019973A GB1438340A (en) 1973-12-31 1973-12-31 Process for production of alkali metal chromates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6019973A GB1438340A (en) 1973-12-31 1973-12-31 Process for production of alkali metal chromates

Publications (1)

Publication Number Publication Date
GB1438340A true GB1438340A (en) 1976-06-03

Family

ID=10485197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6019973A Expired GB1438340A (en) 1973-12-31 1973-12-31 Process for production of alkali metal chromates

Country Status (1)

Country Link
GB (1) GB1438340A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271988A (en) * 1992-10-27 1994-05-04 Bayer Ag Production of sodium dichromate from chromite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271988A (en) * 1992-10-27 1994-05-04 Bayer Ag Production of sodium dichromate from chromite
GB2271988B (en) * 1992-10-27 1995-08-30 Bayer Ag Low-residue high-extraction production of sodium dichromate
US5482690A (en) * 1992-10-27 1996-01-09 Bayer Aktiengesellschaft Low-residue high-extraction production of sodium dichromate

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Legal Events

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