US213460A - Improvement in manufacture of oyster-shell lime - Google Patents
Improvement in manufacture of oyster-shell lime Download PDFInfo
- Publication number
- US213460A US213460A US213460DA US213460A US 213460 A US213460 A US 213460A US 213460D A US213460D A US 213460DA US 213460 A US213460 A US 213460A
- Authority
- US
- United States
- Prior art keywords
- oyster
- lime
- improvement
- manufacture
- shell
- 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 - Lifetime
Links
- 239000004571 lime Substances 0.000 title description 14
- 235000008733 Citrus aurantifolia Nutrition 0.000 title description 10
- 235000015450 Tilia cordata Nutrition 0.000 title description 10
- 235000011941 Tilia x europaea Nutrition 0.000 title description 10
- 238000004519 manufacturing process Methods 0.000 title description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 30
- 239000000292 calcium oxide Substances 0.000 description 16
- 235000012255 calcium oxide Nutrition 0.000 description 14
- 239000004570 mortar (masonry) Substances 0.000 description 10
- 239000011505 plaster Substances 0.000 description 10
- 235000013312 flour Nutrition 0.000 description 6
- 235000012054 meals Nutrition 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIESĀ ; PREPARATION OF CARBON BLACKĀ ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/185—After-treatment, e.g. grinding, purification, conversion of crystal morphology
Definitions
- Shell-lime as ordinarily made by only burning, fails to become thoroughly slaked, because of the hearts and butt-s of the shells, which remain whole, hard, and tough after being burned into quicklime, resisting for a long time any reduction by hydration, and the result is that a portion of the shell-quicklime is left to slake after the mortar or plaster with which it is incorporated is applied, blistering and cracking the work months after it is done.
- Air-slaking will not take place in store, by reason of the compactness of the body of the powdered or flour oyster-shell quicklime.
- the flour quicklime thus made may be kept in store and sold by the quantity, or may be stored in barrels and thus sold.
Description
UNITED STATES PATENT OFFICE.
CHARLES H. SLICER, OF BALTIMORE, MARYLAND.
IMPROVEMENT IN MANUFACTURE OF OYSTER-SHELL LIME.
Specification forming part of Letters Patent No. 213,460, dated March 18, 1879 5 application filed February 18, 1879.
To all whom it may concern.-
Be it known that I, CHARLES H. SLroER, of Baltimore city, in the State of Maryland, have invented an Improvement in the Mannfacture of Oyster-Shell Lime, of which the following is a specification:
In the use of oyster-shell lime for building purposes, it is well known that the mortar made from it cracks the walls of brick-work, and that when used in plaster it causes the surface to blister or breaks the face into cracks. These most objectionable defects are caused by the after-slakin g, from damp, of the larger unslaked particles of the shells.
Shell-lime, as ordinarily made by only burning, fails to become thoroughly slaked, because of the hearts and butt-s of the shells, which remain whole, hard, and tough after being burned into quicklime, resisting for a long time any reduction by hydration, and the result is that a portion of the shell-quicklime is left to slake after the mortar or plaster with which it is incorporated is applied, blistering and cracking the work months after it is done.
To avoid these defects stated and to put upon the market a cheap article of oystershell powdered or meal quicklime for general building purposes, is the object of my invention.
The following description of my process of producing this desirable article will be readily understood by those skilled in the art.
I take oyster-shells and burn them in akiln, or take the shells already burned and reduce them to a fine powder or fiour by grinding, or grinding and bolting through a fine mesh, and the article is thus produced ready for the market. It is then a powdered oyster-shell quicklime, and may be afterward hydrated or slaked in the making of mortar or plaster.
Air-slaking will not take place in store, by reason of the compactness of the body of the powdered or flour oyster-shell quicklime.
When this lime is made into mortar or plaster no after-slaking can take place, by reason of the fineness of the particles, and for this reason, should it be possible that any slaking does take place, the same is inappreciable and can do no harm.
In slaking the lime thus made no time is lost, since the slaking takes place almost immediately upon contact with water, and a most thorough admixture with the sand may be made.
By my method of thus using the lime and getting a perfect admixture with the sand, less time is required, less time and less labor, besides giving the same reliable Work that is produced from the ordinary stone-lime of commerce.
The flour quicklime thus made may be kept in store and sold by the quantity, or may be stored in barrels and thus sold.
I claim- 1. As a new article of manufacture, powdered or flour quicklime made from oystershells.
2. The herein-described method of producing powdered quicklime by burning oystershells and grinding them to a fine powder or meal, for the purpose of preventing after-slaking when used in mortar and plaster.
In testimony whereof I have hereunto set my hand in the presence of two witnesses.
A. E. H. JoHNsON, J. W. HAMILTON J OHNSON.
Publications (1)
Publication Number | Publication Date |
---|---|
US213460A true US213460A (en) | 1879-03-18 |
Family
ID=2282865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US213460D Expired - Lifetime US213460A (en) | Improvement in manufacture of oyster-shell lime |
Country Status (1)
Country | Link |
---|---|
US (1) | US213460A (en) |
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0
- US US213460D patent/US213460A/en not_active Expired - Lifetime
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