US929962A - Manufacture of lead arsenate. - Google Patents
Manufacture of lead arsenate. Download PDFInfo
- Publication number
- US929962A US929962A US38871107A US1907388711A US929962A US 929962 A US929962 A US 929962A US 38871107 A US38871107 A US 38871107A US 1907388711 A US1907388711 A US 1907388711A US 929962 A US929962 A US 929962A
- Authority
- US
- United States
- Prior art keywords
- lead
- manufacture
- roasting
- lead arsenate
- arsenate
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G28/00—Compounds of arsenic
- C01G28/007—Halides
Definitions
- ur invention relates to improvements in r the manufacture of lead arsenates.
- ur process consists in the formation of lead arscnates, by roasting the combined parts in the presence of oxygen.
- the ordinary process for the manufacture of lead arsenates is a precipitation process, Where soluble salt and arsena-te are brought togctl'ier in their proper combining Weights, and this process may be properly divided into three stages first, the manu facture of lead acetate; secondly, the manufacture of sodium arsenate; and finally, the reaction between the foregoing parts.
- Uur process may be carried. outin slightly different Ways.
- We may form lead .rsenite and oxidize it to lead arsenatc by roasting in the presence of oxygen.
- the lead arsenite is produced by heating White arsenic (As O With lead or oxid of lead (PbO), and the further roasting will result in the load arscnate.
- the lead arscnate may be formed directly roasting White arsenic ("As OQ oXid (1 b0,) or lead nitrate With one of the oxidizing agent.
Description
ELLE RSLIE E. LUTHER AND WILLl'All I H. VOLCK, OF"W SONVI LLE, CALIFORNIA.
MANUFALTUBE OF LEAD .ARSIENALTE.
Specification of Letters Application filed August 15, 3907.
Patent. Patented Aug. 3, 1909.
Serial in. 888,711.
To all 10/ 207)) it may concern:
Be it known that we, ELLERSLIE E. LUTHER and VJILLI M H. VoLcK, both citi Zens ol" the United States, residing at at sonyillc, in the county of Santa Cruz and State of California, have invented new and useful Improvements in the Manufacture of Lead Arsenates, or" Which the following is a 1 specification.
ur invention relates to improvements in r the manufacture of lead arsenates.
consists in the process and method which will be more l'ully explained in the following specification.
ur process consists in the formation of lead arscnates, by roasting the combined parts in the presence of oxygen.
The ordinary process for the manufacture of lead arsenates is a precipitation process, Where soluble salt and arsena-te are brought togctl'ier in their proper combining Weights, and this process may be properly divided into three stages first, the manu facture of lead acetate; secondly, the manufacture of sodium arsenate; and finally, the reaction between the foregoing parts.
Uur process may be carried. outin slightly different Ways. Thus, We may form lead .rsenite and oxidize it to lead arsenatc by roasting in the presence of oxygen. The lead arsenite is produced by heating White arsenic (As O With lead or oxid of lead (PbO), and the further roasting will result in the load arscnate. The arsenate formed by amixture of lead arsenite and lead ars'enate, by heating: red lead (Pb OQ with White arsenic, and its subsequent oxidation by roasting in the presence of oxygen. Or the lead arscnate may be formed directly roasting White arsenic ("As OQ oXid (1 b0,) or lead nitrate With one of the oxidizing agent.
(Pb N09,,
or lower oxids of lead with an may also be' with lead pei Combining Weights of White arsenic and the lead compound then react upon each other, in the presence of oxygen, either derived from the air by the action of the heat applied. arious temperatures may cient, under different conditions, but We have found that for the production of arse nate of lead, which is the particular metallic arsenate h re described, a temperature of between 300 and 400 degrees centigrade is very effective. By this process-we are enabled to produce the arsenate at a single operation, and at a considerably reduced cost. Having thus described our invention,.wl1at I l i two claim and. desire to secure by Letters Patent 185 1. The process of producing lead arse- I nates, the same consisting in roasting-comining Weights 01 White arsenic and lead compound in the presence of oxygen.
White arscnic'in contact With a compound, and continuing the J heating and roasting the combined material I in the presence of oxy en. l he process of producing lead arse-notes, the same'consisting in heating a lead compound and White arsenic together, and continuingthe heating and roasting the combined materials in the presence of an oxidizing agent.
In testimony whereof" We have hereunto set our hands in presence of two subscribing: Witnesses.
ELLEasLIn 13. LUTHER. WILLIAM H. VOLCK. VVitnesses:
W. A. BUCKHART, THos. W. FIRBY.
or otherwise supplied, and
be found efii- 2. The process of producing lead arsenates" said method'consistlng
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38871107A US929962A (en) | 1907-08-15 | 1907-08-15 | Manufacture of lead arsenate. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38871107A US929962A (en) | 1907-08-15 | 1907-08-15 | Manufacture of lead arsenate. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US929962A true US929962A (en) | 1909-08-03 |
Family
ID=2998386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US38871107A Expired - Lifetime US929962A (en) | 1907-08-15 | 1907-08-15 | Manufacture of lead arsenate. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US929962A (en) |
-
1907
- 1907-08-15 US US38871107A patent/US929962A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US929962A (en) | Manufacture of lead arsenate. | |
| KR101544020B1 (en) | Process for producing core-shell structured quantum dots which have different wavelengths with the same sizes | |
| US486330A (en) | Process of treating speiss | |
| KR890008340A (en) | Molybdenum Additives and Manufacturing Method Thereof | |
| US413428A (en) | Process of treating pyrites cinders for the manufacture of paint | |
| US9145A (en) | Improvement in preparing zinc from the ores | |
| US1303168A (en) | gibbs | |
| US1615193A (en) | Method of making arsenic acid | |
| US325257A (en) | Manufacture of i ncan descents | |
| US1354806A (en) | Making bismuth oxid | |
| US2156595A (en) | Method for manufacturing calcium arsenate | |
| US931522A (en) | Method of making litharge. | |
| US495593A (en) | Process of manufacturing zinc oxide | |
| US266115A (en) | Preparing peroxide of lead | |
| US1026384A (en) | Metal filament. | |
| US1552506A (en) | Process for the extraction of cadmium as sulphate | |
| US1401932A (en) | Process of producing molybdenum trioxid | |
| US1027169A (en) | Battery-zinc. | |
| US1616741A (en) | Novel composition of material | |
| US1532577A (en) | Method of making the arsenate of calcium and analogous elements | |
| US930967A (en) | Process of obtaining pure metallic copper from a solution of a salt of copper. | |
| US681698A (en) | Method of making sulfuric anhydrid. | |
| US1441168A (en) | Paint composition and process of manufacturing the same | |
| US1700756A (en) | Dry process of manufacturing calcium arsenite | |
| US477488A (en) | Frank l |