US467042A - Method of and apparatus for producing lead carbonate - Google Patents
Method of and apparatus for producing lead carbonate Download PDFInfo
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- US467042A US467042A US467042DA US467042A US 467042 A US467042 A US 467042A US 467042D A US467042D A US 467042DA US 467042 A US467042 A US 467042A
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- 229910000003 Lead carbonate Inorganic materials 0.000 title description 30
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 54
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 34
- 235000011089 carbon dioxide Nutrition 0.000 description 34
- 229940112735 lead carbonate Drugs 0.000 description 28
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 24
- 239000007789 gas Substances 0.000 description 24
- 229960000583 Acetic Acid Drugs 0.000 description 18
- 235000011054 acetic acid Nutrition 0.000 description 18
- 238000002485 combustion reaction Methods 0.000 description 18
- 238000001816 cooling Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000835 fiber Substances 0.000 description 10
- 239000003208 petroleum Substances 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 229910000004 White lead Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 241000220317 Rosa Species 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000003190 augmentative Effects 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
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
- C09C1/14—Compounds of lead
- C09C1/16—White lead
Definitions
- .tallic carbonates especially lead carbonate or white lead.
- Metallic lead has also been converted into the carbonate in a much quicker time than what is required by the Dutch method by means of carbonicacid gas generated by the combustion of petroleum. This method, although much quicker than the Dutch method, does not ordinarily produce a superior quality of lead carbonate owingto the drying out of the metallic lead.
- This invention has for its object to produce a superior quality of lead carbonate in a substantially short time, whereby the advantages of the old Dutch method and of the petroleum method are combined.
- the lead to be converted into the carbonate is placed in a corroding-chamber in a finely-divided condition, preferably in the form of thin strips or fibers, and is therein acted upon by a current of cooled hydrous carbonic-acid gas with an oxidizing agent, which for the best results consists of vapors of acetic acid, preferably commingled with the hydrous carbonic-acid gas before being brought into contact with the lead, the said gas and vapor before entering the corroding-chamber being cooled to about 95 Fahrenheit, and the tem- Serial No. 387,105 (No model.)
- perature of the corroding-chamber is maintained at about 95 to 105 Fahrenheit, so that the danger of drying out the metallic lead or stock is prevented, for we have ascertained by a series of long-continued experiments that if the metallic lead is subjected to a too high temperature spots are formed on the surface of the lead which resist the action of the carbonic-acid gas and acetic-acid vapor and cannot be subsequently corroded. These spots give rise to lumps of metallic lead in the carbonate and deteriorate the quality of the carbonate produced.
- the corroding-chamber referred to will preferably be made in the form of a stack and will preferably contain in its lower portion tan-bark, cow-dung, or like material now commonly employed in the Dutch method, and preferably a series of such stacks will be connected together for a circulation of gas and vapor from one to another, as will be described, the circulation being effected by means of the draft in a chimney, thereby dispensing with a circulating-pump and cheapening the cost of the apparatus, the said draft being controlled by a suitable damper.
- each stack may and preferably will have located in it a steam-pipe, by which the tan-bark orlike material may be heated.
- Figure 1 represents in section and elevation an apparatus embodying this invention and with which the improved method may be carried into eifect;
- Fig. 2 a sectional detail of the gas-cooling apparatus shown in Fig. 1, and
- Fig. 3 a vertical section of a modified form of cooling apparatus.
- FIG. 1 four stacks or corroding-chambers A are shown and numbered 2 3 4 5, and the said stacks being alike we will specifically describe but one.
- Each stack A made of wood or other suitable material, is divided into an upper compartment a and a lower compartment a, as herein shown, by a perforated wall or partias shown, upon supports a, which may be bars, rods, posts, or of any other suitable construction.
- the stack A is provided with, preferably, side doors a (L5, hinged, as at a, to the main frame of the stack and secured together by one or more latches a or by any other suitable form of locking device.
- the compartment a of each stack contains within it the metallic lead to be converted into the carbonate, which metallie lead is in a finely-divided form, preferably in strips or fibers represented by a the said finely divided lead being supported upon a series of trays, preferably composed of a wooden frame a and a body a of fibrous material, such as cords orstrings, but which may be made of any material not effected by the corroding agents, and which will not discolor or otherwise injure the carbonate.
- the compartment a of the stack is partially or Wholly filled with tan-bark, cow-dung, orlike material I), in which is placed a vessel h, to contain acetic acid or water acidulated with acetic acid, and the tan-bark or like material is heated, as herein represented, by a steam-pipe b preferably provided with perforations and connected to a supply-pipe b which communicates with a boileror 0th ersource of supply.
- the compartment a of the first stack (marked 2) has an inlet-pipe b and the compartment a for the last stack has an outletpipe 12 communicating with a chimney b and the compartments a of the adjacent Zsltabcks are connected together by pipes b
- the inlet-pipe Z1 for the stack marked 2 is connected to or communicates with the source of supply for carbonic-acid gas, it beingherein shown as connected directly to a cooling apparatus or chamber I), placed in the inletpipe Z2 the latter being provided with a bellshaped mouth I), projecting down within a vessel or chamber 1), having a central pipe or tube Z2 up into and preferably beyond or above which is projected the chimney Z) of a lamp Z1
- the vessel h contains water, or
- acetic acid which is vaporized by the heat from the products of combustion passing up through the chimney b", and the vapor thus formed commingles with the products of combustion and passes into the corroding-compartment of the stack A, (marked 2,) the said vapors and products of combustion being cooled on their passage through the cooling apparatus b the latter, when made, as shown in Figs. 1 and 2, containing suspended therein a number or series of strips or sheets 0 of flannel or other absorbent material which dip into a bath 0' of water, or it may be-dilute acetic acid.
- the lamp or burner Z) preferably contains refined petroleum or other hydrocarbon, or it may be alcohol or equivalent body, which is decomposed by combustion into a hydrous carbonicacid gase that is, carbonic-acid gas and a plurality of molecules of water, which reaction may be best represented as follows, viz: 2O lI +(3O)O:12OO +6H O.
- the hydrous carbonic-acid gas formed as above represented may and preferably will be augmented with watery vapor arising fr m the vessel 1), and the temperature of the gas and vapors is lowered in the cooling apparatus, so that the said gas and vapor enter the corroding compartment of the stack marked 2 at a substantially low temperature-that is, at about 95 Fahrenheit-and the lead fiber contained therein is energetically acted upon by the said gas and vapor and converted into the carbonate in a substantially short time without the formation of dry spots on the lead.
- the chimney b is provided with a damper c, by which the draft of the chimney may be controlled, and the rate of circulation of the gas and vapor through the stacks may be regulated.
- a gas or other burner c is located within the chimney.
- the inlet-pipe b for the stack A (marked 2) is provided with a valve 0, by which the inlet to the corroding-compartmentof the stack 2 may be closed, if desiredas, for instance, at night-time, the lamp or burner Z) being at such time extinguished.
- the lead fiber may be subjected to the corroding action of the hydrous carbonic-acid gas from the lamp or burner I) and to the action of the carbonicacid gas and vapor arising from the compartment 0, of the corroding-staek, as at that time the lamp or burner h may be watched and controlled by a workman; but at night the lamp may be extinguished and the corroding action still maintained by the carbonicacid and vapor arising from the co1npartmeal; a of the stack.
- any other desired form of apparatus may be employed-such, for instance, as shown in Fig. 3, wherein the gas is subjected to a shower of water from a rose or nozzle 0 on the end of a pipe 0 connected to a suitable source of supply.
- the trays or supporting-frames covered with lead fiber are placed within the stacks and the doors securely closed.
- the lamp or burner b is started and the steam is admitted to the compartment a to start the fermentation or combustion of the tan-bark, cow-dung, or like material, and the corrosion is continued until all the metallic lead is converted into the carbonate, which takes from four to five days, at the end of which time the trays holding the lead carbonate may be removed, and the carbonate, which is then of a creamy consistency, is dried and is ready to be used without subsequent treatment, such as grinding, as more commonly practiced.
- the herein-described method of producing lead carbonate which consists in confining finely-divided metallic lead in a closed chamber and subjecting the said finely-divided lead to the action of cooled hydrous carbonic-acid gas and an oxidizing agent, the said gas being generated by the combustion of refined petroleum or its described equivalent and cooled before entering the said chamber, substantially as described.
- the herein-described method of producing lead carbonate which consists in confining finely-divided metallic lead in a closed chamber and subjecting the said finely-divided lead to the corroding action of carbonicacid gas and acetic-acid vapor generated in the said chamber and to the corroding action of an oxidizing agent, substantially as described.
- the herein-described method of producing lead carbonate which consists in confining finely-divided metallic lead in a closed chamber and subjecting the said finely-divided lead to the corroding action of carbonicacid gas and acetic-acid vapor generated in the said chamber and to the corroding action of hydrous carbonic-acid gas generated outside the chamber and cooled before entering the said chamber, substantially as described.
- the combination with a chamher or stack provided with a perforated partition to form compartments, of a gas inlet and out-let for one of said compartments, a series of removable trays in the upper compartment to support the lead to be converted, a fermenting substance in the lower compartment, and means to heat the lower of said compartments, substantially as described.
- the combination with a stack or chamber to contain the 1ead,of an inletpipe for the said stack or chamber, a Vessel to contain fluid, provided with a tube or pipe extended up through the vessel, of a burner to co-operate with and 'heat said vessel, and a cooling apparatus located in the inlet-pipe, substantially as described.
- the combination with a stack or chamber to contain the lead, of an inletpipe for the said stack or chamber, a vessel to contain fluid, provided with a tube or pipe extended up through the vessel, of a burner to co-operate with and heat said vessel, and a cooling apparatus located in the inlet-pipe, an outlet-pipe for said chamber orstack, and
- a chimney with which the outlet-pipe comor chamber to contain the lead, of an inlet-- pipe for the said stack or chamber, a vessel to contain fluid, provided With a tube or pipe extended up through the vessel, of a burner to cooperate with and heat said Vessel and a cooling apparatus located in the inlet-pipe, an outlet-pipe for said chamber or stack, and a chimney with which the outletpipe communicates, and a burner located in said chimney, to operate substantially as described.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Description
(No Model.)
N. K. MORRIS & J. W. BAILEY. METHOD OF AND APPARATUS FOR PRODUCING LEAD GARBONATE.
Patented Jan. 12, 1892.
fa /67030715 ,Jf'armawQZfWfOTTiS.
UNTTED STATES PATENT OFFICE,
NORMAN K. MORRIS AND JOHN \V. BAILEY, OE DENVER, COLORADO.
METHOD OF AND APPARATUS FOR PRODUCING LEAD CARBONATE.
SPECIFICATION forming part of Letters Patent No. 467,042, dated January 12, 1892.
Application filed March 31, 1891.
.tallic carbonates, especially lead carbonate or white lead.
Prior to our invention we are aware that lead carbonate or white lead has been made by means of carbonic-acid gas acting upon the lead in the presence of acetic-acid vapor.
Lead carbonate manufactured in a stack by what is known as the Dutch method, in which the carbonic-acid gas is made from tan-bark, &c., possesses superior qualities; but the objection to this method is the length of time required to convert the metallic lead into the form of the carbonate. Metallic lead has also been converted into the carbonate in a much quicker time than what is required by the Dutch method by means of carbonicacid gas generated by the combustion of petroleum. This method, although much quicker than the Dutch method, does not ordinarily produce a superior quality of lead carbonate owingto the drying out of the metallic lead.
This invention has for its object to produce a superior quality of lead carbonate in a substantially short time, whereby the advantages of the old Dutch method and of the petroleum method are combined.
In accordance with this invention, the lead to be converted into the carbonate is placed in a corroding-chamber in a finely-divided condition, preferably in the form of thin strips or fibers, and is therein acted upon by a current of cooled hydrous carbonic-acid gas with an oxidizing agent, which for the best results consists of vapors of acetic acid, preferably commingled with the hydrous carbonic-acid gas before being brought into contact with the lead, the said gas and vapor before entering the corroding-chamber being cooled to about 95 Fahrenheit, and the tem- Serial No. 387,105 (No model.)
perature of the corroding-chamber is maintained at about 95 to 105 Fahrenheit, so that the danger of drying out the metallic lead or stock is prevented, for we have ascertained by a series of long-continued experiments that if the metallic lead is subjected to a too high temperature spots are formed on the surface of the lead which resist the action of the carbonic-acid gas and acetic-acid vapor and cannot be subsequently corroded. These spots give rise to lumps of metallic lead in the carbonate and deteriorate the quality of the carbonate produced. The formation of these spots is not, so far as 'our experiments show, prevented by the presence of an excess of watery vapor generated by heating water or even acidulated Water; but We are led to believe by the results of our experiments that water formed by the combustion of refined petroleum-oil or other unsaturated or saturated hydrocarbon-such, for instance, as gasoline, kerosene, natural gas, naphtha, alcohol, etc-has a peculiar property itself or imparts to the carbonic-acid gas produced by the combustion of the above-mentioned bodies, the property of more energetically acting upon the metallic lead, for the lead carbonate produced in accordance with this invention is of a beautiful white carbonate of creamy consistency and free from particles of metallic lead, so that subsequent treatments, such as grinding, are entirely dis pensed with and the carbonate may be taken from the corroding-chamber and used'without an yprcparatory treatment.
The corroding-chamber referred to will preferably be made in the form of a stack and will preferably contain in its lower portion tan-bark, cow-dung, or like material now commonly employed in the Dutch method, and preferably a series of such stacks will be connected together for a circulation of gas and vapor from one to another, as will be described, the circulation being effected by means of the draft in a chimney, thereby dispensing with a circulating-pump and cheapening the cost of the apparatus, the said draft being controlled by a suitable damper.
The bottom or lower chamber of each stack may and preferably will have located in it a steam-pipe, by which the tan-bark orlike material may be heated.
ICO
tion a resting,
The particular features of our invention will be pointed out in the claim at the end of this specification.
Figure 1 represents in section and elevation an apparatus embodying this invention and with which the improved method may be carried into eifect; Fig. 2, a sectional detail of the gas-cooling apparatus shown in Fig. 1, and Fig. 3 a vertical section of a modified form of cooling apparatus.
Referring to Fig. 1, four stacks or corroding-chambers A are shown and numbered 2 3 4 5, and the said stacks being alike we will specifically describe but one.
Each stack A, made of wood or other suitable material, is divided into an upper compartment a and a lower compartment a, as herein shown, by a perforated wall or partias shown, upon supports a, which may be bars, rods, posts, or of any other suitable construction.
The stack A is provided with, preferably, side doors a (L5, hinged, as at a, to the main frame of the stack and secured together by one or more latches a or by any other suitable form of locking device. The compartment a of each stack contains within it the metallic lead to be converted into the carbonate, which metallie lead is in a finely-divided form, preferably in strips or fibers represented by a the said finely divided lead being supported upon a series of trays, preferably composed of a wooden frame a and a body a of fibrous material, such as cords orstrings, but which may be made of any material not effected by the corroding agents, and which will not discolor or otherwise injure the carbonate. The compartment a of the stack is partially or Wholly filled with tan-bark, cow-dung, orlike material I), in which is placed a vessel h, to contain acetic acid or water acidulated with acetic acid, and the tan-bark or like material is heated, as herein represented, by a steam-pipe b preferably provided with perforations and connected to a supply-pipe b which communicates with a boileror 0th ersource of supply.
The compartment a of the first stack (marked 2) has an inlet-pipe b and the compartment a for the last stack has an outletpipe 12 communicating with a chimney b and the compartments a of the adjacent Zsltabcks are connected together by pipes b The inlet-pipe Z1 for the stack marked 2 is connected to or communicates with the source of supply for carbonic-acid gas, it beingherein shown as connected directly to a cooling apparatus or chamber I), placed in the inletpipe Z2 the latter being provided with a bellshaped mouth I), projecting down within a vessel or chamber 1), having a central pipe or tube Z2 up into and preferably beyond or above which is projected the chimney Z) of a lamp Z1 The vessel h contains water, or
it may be dilute acetic acid, which is vaporized by the heat from the products of combustion passing up through the chimney b", and the vapor thus formed commingles with the products of combustion and passes into the corroding-compartment of the stack A, (marked 2,) the said vapors and products of combustion being cooled on their passage through the cooling apparatus b the latter, when made, as shown in Figs. 1 and 2, containing suspended therein a number or series of strips or sheets 0 of flannel or other absorbent material which dip into a bath 0' of water, or it may be-dilute acetic acid. The lamp or burner Z) preferably contains refined petroleum or other hydrocarbon, or it may be alcohol or equivalent body, which is decomposed by combustion into a hydrous carbonicacid gase that is, carbonic-acid gas and a plurality of molecules of water, which reaction may be best represented as follows, viz: 2O lI +(3O)O:12OO +6H O.
The hydrous carbonic-acid gas formed as above represented may and preferably will be augmented with watery vapor arising fr m the vessel 1), and the temperature of the gas and vapors is lowered in the cooling apparatus, so that the said gas and vapor enter the corroding compartment of the stack marked 2 at a substantially low temperature-that is, at about 95 Fahrenheit-and the lead fiber contained therein is energetically acted upon by the said gas and vapor and converted into the carbonate in a substantially short time without the formation of dry spots on the lead.
The surplus gas and vapor pass from the stack 2 through the pipe b into the stack 3, thence by the pipe I) into the stack 4, thence by the pipe 1)" into the stack 5, from which it passes through the pipe 11 into the chimney D The chimney b is provided with a damper c, by which the draft of the chimney may be controlled, and the rate of circulation of the gas and vapor through the stacks may be regulated. To assist the natural draft of the chimney, a gas or other burner c is located within the chimney.
The inlet-pipe b for the stack A (marked 2) is provided with a valve 0, by which the inlet to the corroding-compartmentof the stack 2 may be closed, if desiredas, for instance, at night-time, the lamp or burner Z) being at such time extinguished.
During the daytime the lead fiber may be subjected to the corroding action of the hydrous carbonic-acid gas from the lamp or burner I) and to the action of the carbonicacid gas and vapor arising from the compartment 0, of the corroding-staek, as at that time the lamp or burner h may be watched and controlled by a workman; but at night the lamp may be extinguished and the corroding action still maintained by the carbonicacid and vapor arising from the co1npartmeal; a of the stack.
Instead of the particular form of cooling apparatus, any other desired form of apparatus may be employed-such, for instance, as shown in Fig. 3, wherein the gas is subjected to a shower of water from a rose or nozzle 0 on the end of a pipe 0 connected to a suitable source of supply.
By means of the natural draft of the chimney a circulation of gas and vapor may be maintained without the use of machinery, such as a pump.
In practice the trays or supporting-frames covered with lead fiber are placed within the stacks and the doors securely closed. The lamp or burner b is started and the steam is admitted to the compartment a to start the fermentation or combustion of the tan-bark, cow-dung, or like material, and the corrosion is continued until all the metallic lead is converted into the carbonate, which takes from four to five days, at the end of which time the trays holding the lead carbonate may be removed, and the carbonate, which is then of a creamy consistency, is dried and is ready to be used without subsequent treatment, such as grinding, as more commonly practiced.
We have herein shown a lamp by which the hydrous carbonic-acid gas is generated; but we do not desire to limit ourselves in this respect, as any desired formof burner may be used.
To claim 1. The herein-described method of producing lead carbonate, which consists in confining finely-divided metallic lead in a closed chamber and subjecting the said finely-divided lead to the action of cooled hydrous carbonic-acid gas and an oxidizing agent, the said gas being generated by the combustion of refined petroleum or its described equivalent and cooled before entering the said chamber, substantially as described.
2. The herein-described method of producing lead carbonate, which consists in confining finely-divided metallic lead in a closed chamber and subjecting the said finely-divided lead to the corroding action of carbonicacid gas and acetic-acid vapor generated in the said chamber and to the corroding action of an oxidizing agent, substantially as described.
4. The herein-described method of producing lead carbonate, which consists in confining finely-divided metallic lead in a closed chamber and subjecting the said finely-divided lead to the corroding action of carbonicacid gas and acetic-acid vapor generated in the said chamber and to the corroding action of hydrous carbonic-acid gas generated outside the chamber and cooled before entering the said chamber, substantially as described.
5. In an apparatus for the production of lead carbonate, the combination, with a chamher or stack provided with a perforated partition to form compartments, of a gas inlet and out-let for one of said compartments, a series of removable trays in the upper compartment to support the lead to be converted, a fermenting substance in the lower compartment, and means to heat the lower of said compartments, substantially as described.
6. In an apparatus for the production of leadcarbonate, the combination, with a stack or chamber to contain the 1ead,of an inletpipe for the said stack or chamber, a Vessel to contain fluid, provided with a tube or pipe extended up through the vessel, of a burner to co-operate with and 'heat said vessel, and a cooling apparatus located in the inlet-pipe, substantially as described.
7. In an apparatus for the production of lead carbonate, the combination, with a stack or chamber to contain the lead, of an inletpipe for the said stack or chamber, a vessel to contain fluid, provided with a tube or pipe extended up through the vessel, of a burner to co-operate with and heat said vessel, and a cooling apparatus located in the inlet-pipe, an outlet-pipe for said chamber orstack, and
a chimney with which the outlet-pipe comor chamber to contain the lead, of an inlet-- pipe for the said stack or chamber, a vessel to contain fluid, provided With a tube or pipe extended up through the vessel, of a burner to cooperate with and heat said Vessel and a cooling apparatus located in the inlet-pipe, an outlet-pipe for said chamber or stack, and a chimney with which the outletpipe communicates, and a burner located in said chimney, to operate substantially as described.
In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses. 1
NORMAN K. MORRIS. JOHN W. BAILEY. Witnesses:
O. T. WARD, R. T. ROYAL.
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