Improvements in Treating a Product Obtained from Sea Weed.
Year: 1888

page_text: Date of Application, 2nd Nov., 1888
Complete Specification Left, 27th July, 1889-Accepted, 7th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Treating a Product Obtained from Sea Weed.
I, ROBERT HOWISON STEEDMAN, of Holly Villa, Dalmuir, in the County of
Dumbarton, North Britain, Manufacturing Chemist, do hereby declare the nature of
this Invention to be as follows, that is to say :-
My said Invention has for its object to treat in an improved, simple, and effectual
manner a certain product obtained in the ordinary processes of treating sea weed.
The product referred to is what is known as kelp salt obtained during the
evaporation of liquors resulting from the lixiviation of kelp or other prepared form of
sea weed; and in carrying out my Invention according to ono modification I separate.
the salt from the mother liquor and dissolve it in water. After separating suspended
matters by filtration or settling I add a solution of calcium chloride (obtained as a
bye product of the alkali manufacture or otherwise) until the liquor ceases to give an
alkaline reaction.
As a result of the process calcium..carbonate is precipitated in a fine and pure
condition suitable for various purposes, and may be separated and washed. The
clear liquor is next evaporated and yields salt which may be advantageously used in
the alkali manufacture or for other purposes.
According to another modification the calcium chloride is added to the kelp liquor
before salting out the kelp salt.
In either modification there may be substituted for the calcium chloride or part of
it any one or more of the chlorides of magnesium, strontium, barium, or manganese.
Dated this First day of November 1888.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Treating a Product Obtained from Sea Weed.
I, ROBERT HOWISON STEEDMAN, of Holly Villa, Dalmuir, in the County of
Dumbarton, North Britain, Manufacturing 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, that
is to say:
My said Invention has for its object to treat in an improved, simple, and effectual
manner, a certain product obtained in the ordinary processes of treating sea weed.
The product referred to is what is known as kelp salt obtained during the
evaporation of liquors resulting from the lixiviation of kelp or other prepared form of
sea weed; and in carrying out my said Invention according to one modification I
separate the salt from the mother liquor and dissolve it in water. After separating
suspended matters by filtration or settling I add a solution of calcium chloride
(obtained as a bye product in the alkali manufacture or otherwise) until the liquor
ceases to give an alkaline reaction.
As a result of the process calcium carbonate is precipitated in a fine and pure
condition suitable for various purposes, and may be separated and washed. The clear
liquor is next evaporated and yields salt which may be advantageously used in the
alkali manufacture or for other purposes.
According to another modification the calcium chloride is added to the kelp liquor
before salting out the kelp salt.
In either modification there may be substituted for the calcium chloride or part of it
any one or more of the chlorides of magnesium, strontium, barium, or manganese;

page_text: or a sulphate of magnesium or manganese may be used instead of a chloride, the
resulting sulphate of sodium being advantageously usable in the alkali manufacture
whilst if carbonate of manganese is formed it can be converted to peroxide by well
known means and used in processes for obtaining chlorine.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. Treating kelp salt with calcium chloride to obtain calcium carbonate substantially
as hereinbefore described.
2. Treating kelp salt with chloride of calcium, or of strontium, or of barium, or
with chloride or sulphate of magnesium or of manganese to obtain a salt usable in the
alkali manufacture substantially as hereinbefore described.
Dated this Twenty-sixth day of July 1889.
EDMUND HUNI,
Applicant's Agent.