12/18/2023 0 Comments Precipitate gold electrodes![]() ![]() This solution is separated by filtration or otherwise, and then evaporated to dryness, the resulting product (salts) being a good fertilizer'for plants, and constituting a valuable by-product of my process. ![]() Some carbon dioxde'may escape, but the main products of this treatment are a solution and a solid constituent, the solution containing nitric acid, alkali nitrate, and those non-metallic portions of the ore or other material which are soluble in nitric acid or in alkali nitrate. The liquid A is neutralized by means of sodium carbonate or other suitable alkali, heat being applied during this treatment. This solid residue is then separated from the liquid or solution by siphoning the latter off, or in any other suitable manner, and the residue is then washed with water, the wash water being subsequently added to the said solution, producing a liquid which I will call liquid A, while the washed residue shall be referred to as residue B. The solid residue remaining after the treatment with nitric acid consists of the metals, such as platinum and gold, which are not attacked by said acid, and of insoluble constituents such as sand, rock, etc. Among these metals I will name those of the alkalies and of the alkaline earths, also lead, copper, iron, and even some precious metals, such as silver and palladium. Those metals which are attacked by nitric acid will be dissolved or extracted by the acid and go into solution. The material unlocked and reduced as set forth' above is then treated with dilute nitric acid for about twenty-four hours, preferably applying heat slowly during the last few hours of this treatment, Vapors (fumes) of NO and NO2 are sometimes evolved during this treatment. Y02P10/00- Technologies related to metal processing.Y02P- CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS.Y02- TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE.Y- GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS AND DIGESTS.with acids generated in situ in inorganic salt solutions other than ammonium salt solutions C22B3/06- Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g.C22B3/04- Extraction of metal compounds from ores or concentrates by wet processes by leaching.C22B3/00- Extraction of metal compounds from ores or concentrates by wet processes.C22B- PRODUCTION AND REFINING OF METALS PRETREATMENT OF RAW MATERIALS.C22- METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Individual filed Critical Individual Priority to US138127A priority Critical patent/US1941914A/en Application granted granted Critical Publication of US1941914A publication Critical patent/US1941914A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Individual Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US138127A Inventor Rodrian Richard Current Assignee (The listed assignees may be inaccurate. Google Patents Electrochemical process for the recovery of metals from ores and other metal bearing materialsÄownload PDF Info Publication number US1941914A US1941914A US138127A US13812726A US1941914A US 1941914 A US1941914 A US 1941914A US 138127 A US138127 A US 138127A US 13812726 A US13812726 A US 13812726A US 1941914 A US1941914 A US 1941914A Authority US United States Prior art keywords metals solution iron metal treatment Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US1941914A - Electrochemical process for the recovery of metals from ores and other metal bearing materials US1941914A - Electrochemical process for the recovery of metals from ores and other metal bearing materials ![]()
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