A Method of Utilizing Flux Skimmings from Galvanizing Works.
Year: 1888

page_text: Date of Application, 3rd Dec., 1888
Complete Specification Left, 30th Mar., 1889-Accepted, 15th June, 1889
PROVISIONAL SPECIFICATION.
A Method of Utilizing Flux Skimmings from Galvanizing Works.
I, HENRY JAMES KIRKMAN, of the Landore Alkali Works, Swansea, Analytical
Chemist, do hereby declare the nature of this invention to be as follows:-
-
In accordance with my Invention the flux skimmings which occur in the case of
Galvanizing Works (and which consist essentially of Ammonium Chloride and Zinc
Chloride) are dissolved in water. To the solution thus obtained I add any of the
following substances; namely:-Lime, (in the form of milk of lime) Gas Liquor,
Magnesia, Sodium Hydrate, Sodium Carbonate or Ammonia. Either of these said
substances will precipitate the Zinc as a Hydrate or Carbonate, leaving the Ammonia
Salts in Solution.
The precipitate of Zine Hydrate or Zinc Carbonate thus obtained is separated by
suitable means from the solution, and washed and dried, and also if necessary calcined,
it can then be utilised as a pigment, or the Zine can be recovered from it by the
ordinary means. The solution containing the Ammonia can be treated for the
recovery of the Ammonia or the Ammonia Salts by any of the well known methods,
and also the salts of any of the substances that may be used to precipitate the Zinc from
the solution of Zinc Skimmings.
If any of the substances upon being added to the solution of Flux Skimmings
should decompose the Ammonia Salts and cause Ammonia to be evolved, the solution
of Flux skimmings can be treated in closed or other suitable vessels and the evolved
Ammonia recovered by any of the well known methods.
Dated this Third day of December 1888.
JAMES
STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.
COMPLETE SPECIFICATION.
A Method of Utilising Flux Skimmings from Galvanizing Works.
1, HENRY JAMES KIRKMAN, of the Landore Alkali Works Swansea, Analytical
Chemist, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-.
In accordance with my invention the flux skimmings, which occur in the case of
Galvanising works (and which consists essentially of Ammonium Chloride and Zine
Chloride) are dissolved in water, leaving an insoluble residue containing Zinc. To
the solution thus obtained, after being separated by suitable means from the residue,
I add any of the following substances, namely:--Lime (in the form of milk of lime)
Gas Liquor, Magnesia, Sodium Hydrate, Sodium Carbonate, or Ammonia in
sufficient quantity. Either of the said substances will precipitate the zinc as a Hydrate
or Carbonate leaving the Ammonia Salts in solution.
The precipitate of Zinc Hydrate or Zinc Carbonate thus obtained is separated by
suitable means from the solution, and washed and dried, and also if necessary
calcined; it can then be utilised as a piguent, or if desired the Zinc can be
recovered from the precipitate by the ordinary means. The solution containing
the Ammonia can be treated for the recovery of the Ammonia or the Ammonium
salts by any of the well known methods as also the salts of any of the substances that
may be used to precipitate the zinc from the solution of Zinc skimmings.
Should any of the substances above mentioned, upon being added to the solution
of Flux skimmings, decompose the Ammonium salts and cause Ammonia to be
D

page_text: evolved, said solution of Flux skimmings, can be treated in closed or other suitable
vessels, and the evolved Ammonia recovered by any of the well known methods.
The insoluble residue left after dissolving the zinc Chloride and Ammonium
Chloride can be treated by any of the well known means for the recovery of
the zinc.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The utilisation of Flux Skimmings from Galvanizing Works for the precipitation
and recovery therefrom of the Zinc either as Zinc Oxide or Metallic Zinc substantially
as and for the purposes herein set forth.
Dated this loth day of Maren 1889.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.