DE454758C - Representation of arsenic acid - Google Patents
Representation of arsenic acidInfo
- Publication number
- DE454758C DE454758C DEA44790D DEA0044790D DE454758C DE 454758 C DE454758 C DE 454758C DE A44790 D DEA44790 D DE A44790D DE A0044790 D DEA0044790 D DE A0044790D DE 454758 C DE454758 C DE 454758C
- Authority
- DE
- Germany
- Prior art keywords
- arsenic
- acid
- representation
- arsenic acid
- oxidation
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G28/00—Compounds of arsenic
- C01G28/005—Oxides; Hydroxides; Oxyacids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
Darstellung von Arsensäure. Es ist bereits vorgeschlagen worden, Arsensäure durch Oxydation mittels Salpetersäure so zu erzeugen, daß die zur Oxydation des Arseniks verbrauchte Säure während des Verlaufes der Oxydation selbst mittels gasförmigen Sauerstoffes unter Druck regeneriert wird.Representation of arsenic acid. It has already been suggested to use arsenic acid generated by oxidation with nitric acid so that the oxidation of the Arsenic's consumed acid during the course of the oxidation itself by means of gaseous ones Oxygen is regenerated under pressure.
Es hat sich nun ergeben, daß man nicht nötig hat, erst Arsenik darzustellen, sondern daß man direkt von Arsenerz ausgehen kann. Dies ist von erheblicher wirtschaftlicher und technischer Bedeutung, wie schon allein daraus hervorgeht, daß zu manchen Zeiten; wie im gegenwärtigen Augenblick, Arsenerze sulfidischen Charakters, so Arsenkies mit 2o bis 3o Prozent metallischem Arsen, überhaupt unverkäuflich bzw. unverwertbar sind.It has now been found that it is not necessary to present arsenic first, but that one can start directly from arsenic ore. This is considerably more economical and technical importance, as can be seen from the fact that at some times; as at the present moment, arsenic ores of a sulphide character, so arsenic with 2o to 3o percent metallic arsenic, at all unsaleable or unusable are.
Beispiel. Ein Arsenkies mit 29 Prozent Arsenmetallgehalt wurde mit einer zur Oxydation nicht ausreichenden Menge Salpetersäure unter Sauerstoffdruck einige Stunden erhitzt, bis fast vollkommene Lösung (das Erz enthielt in Säure unlösliche Bestandteile) eingetreten war. Das Arsen war in Arsentrioxyd, der Schwefel in Schwefelsäure, die anderen gegenwärtigen Metalle, wie Eisen, in ein Gemisch von Sulfaten usw. übergegangen. Das Reaktionsprodukt wurde im Vakuum destilliert, wobei zuerst die bis fast auf den letzten Rest wiedergewonnene Salpetersäure überging. Dann ging die freie Schwefelsäure über. Die Arsensäure oder ihre Salze lassen sich aus dem Rückstand auf einem der üblichen Wege leicht gewinnen. Die Reaktion verläuft um so schneller; je besser man rührt und je feiner das Erz ist.Example. An arsenic gravel with 29 percent arsenic metal content was used an insufficient amount of nitric acid for oxidation under oxygen pressure heated for a few hours until almost complete solution (the ore contained acid insoluble Components) had occurred. The arsenic was in arsenic trioxide, the sulfur in sulfuric acid, the other present metals, such as iron, changed into a mixture of sulphates and so on. The reaction product was distilled in vacuo, initially the up to almost the last of the recovered nitric acid passed over. Then the free sulfuric acid went above. The arsenic acid or its salts can be derived from the residue on one of the easily win usual ways. The reaction proceeds all the faster; the better one stirs and the finer the ore is.
Das Verfahren ermöglicht quantitatives Ausbringen des Arsens in Form von Arsensäure direkt aus dem Erz auf einem so einfachen und billigen Wege, daß es als jedem anderen überlegen bezeichnet werden muß.The method enables quantitative application of the arsenic in the form of arsenic acid directly from the ore in such a simple and cheap way that it must be called superior to any other.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA44790D DE454758C (en) | 1925-04-21 | 1925-04-21 | Representation of arsenic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA44790D DE454758C (en) | 1925-04-21 | 1925-04-21 | Representation of arsenic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
DE454758C true DE454758C (en) | 1928-01-23 |
Family
ID=6934382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA44790D Expired DE454758C (en) | 1925-04-21 | 1925-04-21 | Representation of arsenic acid |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE454758C (en) |
-
1925
- 1925-04-21 DE DEA44790D patent/DE454758C/en not_active Expired
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