US47562A - Improvement in the preparation of nitrate of potassa - Google Patents

Improvement in the preparation of nitrate of potassa Download PDF

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US47562A
US47562A US47562DA US47562A US 47562 A US47562 A US 47562A US 47562D A US47562D A US 47562DA US 47562 A US47562 A US 47562A
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potassa
nitrate
improvement
preparation
lixivium
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G5/00Compounds of silver

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  • the lixivium must now be raised by concentration to 24 Baums hydrometer, and while hot from the copper bath be immediately transferred from the copper vats to vats made or lined entirely with lead. The heated lixivium thus transferred must remain in the vat until perfectly cold.
  • V canted liquor must now be treated with commercial nitric acid, in small quantity, thus previously prepared, namely: Add to nitric acid Water from the river, or rain-water caught at not less than forty miles from the ocean, to avoid chloride of sodium; add a quantity of this water to reduce the acid to 19,.or near that density, Baume. At this point arrest dilution instantly and proceed, after thorough commixture, to pass the nitric acid through a leaden tube or gutter into the lixiviurn, testing with litmus to slight acid reaction, then cease. A vast cloud of crystals immediately begins to fall, and will continue, if the case is treated properly, for some time. These crystals may he left after decanting and the residue of the mother-liquor slightly evaporated until nearly all the liquor produces nearly perfectly pure nitrate of potassa.

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Description

UNITED STATES PATENT OFFICE.
HENRY S. OSBORN, OF BELVIDERE, NEW JERSEY.
IMPROVEMENT IN THE PREPARATION OF NITRATE OF POTASSA.
Specification forming part of Letters Patent No. 47,562, dated May 2, 1865.
To aZZ whom it may concern.-
Be it known that I, HENRY S. OSBORN, of Belvidere, in the county of Warren, in the State of New Jersey, have discovered a new and Improved Mode of Forming Perfectly Pure Nitrate of Potassa; and I do hereby declare that the following is a full and exactdescription thereof, reference being had to the ac companying sample of the composition.
The nature of my discovery consists in preparing the lixivium of wood ashes that nitric acid of a certain density will take up only that potassa as its base (without combining to an injurious degree with either the lime or chloride of sodium) which was in the ashes and may also be in the lixivium to a degree.
To enable others skilled in the art to make and use my discovery I will proceed to describe the process.
I lixiviate the ashes with river or rainwater always at a temperature below 60 Fahrenheit. This dissolves the potassa as a base'ot' the nitrate without much lime, and the lixivium is to a degree free. The lixivium must now be raised by concentration to 24 Baums hydrometer, and while hot from the copper bath be immediately transferred from the copper vats to vats made or lined entirely with lead. The heated lixivium thus transferred must remain in the vat until perfectly cold. Upon testing it will now be found that V canted liquor must now be treated with commercial nitric acid, in small quantity, thus previously prepared, namely: Add to nitric acid Water from the river, or rain-water caught at not less than forty miles from the ocean, to avoid chloride of sodium; add a quantity of this water to reduce the acid to 19,.or near that density, Baume. At this point arrest dilution instantly and proceed, after thorough commixture, to pass the nitric acid through a leaden tube or gutter into the lixiviurn, testing with litmus to slight acid reaction, then cease. A vast cloud of crystals immediately begins to fall, and will continue, if the case is treated properly, for some time. These crystals may he left after decanting and the residue of the mother-liquor slightly evaporated until nearly all the liquor produces nearly perfectly pure nitrate of potassa.
This plan of forming nitrate of potassa your petitioner believes to be in'comparably above the plan of forming from potash of commerce, as it is pure immediately after it is taken from the lixivium, a result which has never been arrived at yet by purification from caves, by formation from the nitrified residium and efilorescence of foundations, or from the potash of commerce, or by any other attempt uprn ashes, if it ever has been made.
What I claim as my invention, and desire to secure by Letters Patent, is-
The manufacture of nitrate of potash from the lixivium of wood ashes, in the manner substantially as described.
H. S. OSBORN. \Vitnesses.
CHAS. E. PARKER, A. S. DEICHMAN.
US47562D Improvement in the preparation of nitrate of potassa Expired - Lifetime US47562A (en)

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