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nickel process patent

US20100064854A1 Nickel-laterite process Google Patents

An improved method for processing of nickel-bearing ores, laterite ores, saprolite and limonite ores, oxidic and sulfide ores, metallurgical wastes, and other metal-bearing materials, to recover the valuable minerals contained therein, comprising comminuting ore to a desired size; leaching the ore at about 70 C to 130 C for about 30 minutes to 4 hours with nitric acid, raising the temperature

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US4466828A Process for smelting nickel Google Patents

The present invention concerns a process for smelting nickel which comprises treating nickel-containing material with a reducing gas to reduce the nickel component contained in the nickel-containing material and thereby produce metallic nickel; soaking the thus-obtained material in an ammoniacal aqueous ammonium salt solution and treating it with oxygen or an oxygen-containing gas in the

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US734522A Process of nickel-plating. Google Patents

US734522A US9404002A US1902094040A US734522A US 734522 A US734522 A US 734522A US 9404002 A US9404002 A US 9404002A US 1902094040 A US1902094040 A US 1902094040A US 734522 A US734522 A US 734522A Authority US United States Prior art keywords nickel iron steel process plating Prior art date 1902-02-14 Legal status (The legal status is an assumption and is not a

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Nickel etching process and solution Google Patents

Process and solution for etching nickel and nickel alloys, particularly suitable for use in the manufacture of printed circuit boards. The nickel or alloy is contacted with an aqueous solution of nitric acid, nickel nitrate, a halogen additive and a surfactant. In some embodiments, a small amount of an amino acid is included in the solution to enhance the smoothness of the edges of the etched

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US Patent for Nickel recovery from a high ferrous content

US Patent 95/16118 (BHP Minerals International Inc.) describes an ion exchange process for separating nickel from the leachate from treatment of laterite by the pressure acid leach process. Nickel is extracted by the resin at pH less than 2, and stripped with sulfuric acid for subsequent electrowinning.

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US3357854A Nickel plating process Google Patents

US3357854A US407940A US40794064A US3357854A US 3357854 A US3357854 A US 3357854A US 407940 A US407940 A US 407940A US 40794064 A US40794064 A US 40794064A US 3357854 A US3357854 A US 3357854A Authority US United States Prior art keywords nickel plating per liter bath metabisulfite Prior art date 1964-10-30 Legal status (The legal status is an assumption and is not a

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US6642199B2 Composition for stripping nickel from

A nickel stripping composition is disclosed. The composition can be contacted with a nickel plated article in an aqueous solution in order to remove the nickel. In accordance with the present invention, besides an oxidizing agent, the composition includes the combination of an organic amine and citric acid or salt. Alternatively, other amines containing particular substituent groups can be

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US Patent for Process for recovery of nickel and magnesium

This nickel and magnesium can then be removed from the solution by standard procedures which are known in the art. Through such procedures, the expected recovery is higher than 85% for the nickel content and 90% for the magnesium content of the metal. The oxidant to be used in the process is preferably either oxygen, air, or a mixture of the two.

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US6197126B1 Nickel-free phosphating process Google Patents

The invention is a process for applying a nickel-free, copper-containing phosphate coating to a metal surface by contacting the metal surface with a phosphate solution containing 0.2 to 2.0 g/l zinc ions, 0.5 to 25 mg/l copper ions, and 5-30 g/l phosphate ions.

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NICKEL PLATING HANDBOOK

Nickel electroforming is the process by which nickel is built up by electrodeposition onto a suitable mandrel and subsequently removed to produce a nickel product which corresponds precisely to the shape and texture of the original substrate.

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Nickel extraction process Henkel Corporation

United States Patent 5470552 . Abstract: The recovery of nickel from aqueous ammoniacal solutions containing nickel values by extraction of the nickel values therefrom with an organic solution containing an oxime extractant and an equilibrium modifier followed by stripping of the nickel values from the organic solution by a concentrated aqueous

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US Patent for Process of forming a nickel electrode Patent

The patent goes on to describe a process whereby zinc can be deposited concurrently with nickel-hydroxide by an electrochemical process in which the zinc-nitrate is continuously added to the electrochemical bath during the process. The nickel electrode is often the performance and life limiting component in a sealed, electrolyte-starved

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NICKEL-LATERITE PROCESS Drinkard Jr., William F.

NICKEL-LATERITE PROCESS . United States Patent Application 20100064854 . Kind Code: A1 . Abstract: An improved method for processing of nickel-bearing ores, laterite ores, saprolite and limonite ores, oxidic and sulfide ores, metallurgical wastes, and other metal-bearing materials, to recover the valuable minerals contained therein, comprising

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US Patent for Process for recovery of nickel and magnesium

This nickel and magnesium can then be removed from the solution by standard procedures which are known in the art. Through such procedures, the expected recovery is higher than 85% for the nickel content and 90% for the magnesium content of the metal. The oxidant to be used in the process is preferably either oxygen, air, or a mixture of the two.

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US Patent for Process for purification of nickel plating

An improved process for purifying a nickel plating bath including a pyridine composition as an additive and which bath contains a breakdown product of the pyridine composition. The process has the following steps:a. adjusting the pH of the nickel plating bath to a pH of equal to or greater than 5.0;b. adding an effective amount of an oxidizing agent; andc. removing the breakdown product from

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Process for high speed nickel and gold electroplate system

The disclosure of this patent is, therefore, incorporated herein by reference. Although cobalt-hardened gold outer coatings are preferred, it will be understood that other metal hardeners such as indium, or nickel may also be employed in the practice of the present process which involves the use of a high speed gold treating process following

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PRODUCTION OF NICKEL SULFATE THE INTERNATIONAL NICKEL

United States Patent 3869257 . Abstract: A process for the production of nickel sulfate which comprises reacting nickel carbonyl, sulfur dioxide and oxygen together to form a mixture of nickel sulfate, nickel sulfite and nickel oxide, converting the nickel sulfite and nickel oxide to nickel sulfate and recovering the thus produced nickel

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Coins coated with nickel, copper and nickel and process

Comparative tests have been conducted on struck tokens prepared using the process of this invention identified as "Ni-Cu-Ni coated" and a commercially available nickel coated struck token marketed by Sherritt Gordon Mines Limited and believed to be made in accordance with Canadian Patents 1,105,210 dated Jul. 21, 1981, and 1,198,073 dated Dec

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US Patent for High strength, homogeneous copper-nickel-tin

Mar 17, 2015· A process for producing a high strength, homogeneous copper-nickel-tin alloy with high strength includes preparing a molten mixture of copper, nickel, and tin; pressure assist casting the molten mixture to form a casting; and thermally treating the casting. Novel combinations of properties can be attained for the alloy.

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US Patent Application for PROCESS FOR PRODUCING

The present invention is to provide a process for producing dicyanonorbornane characterized by causing hydrogen cyanide to undergo addition reaction with cyanonorbornene (bicyclo[2.2.1]-5-heptene-2-carbonitrile) in the presence of a zerovalent nickel complex catalyst which is produced by using a phosphite represented by P(x)(y)(z) (wherein P is a phosphorus atom, and x, y and z are each OR

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ELECTRODEPOSITION OF NICKEL

and his patented process gave his companyavirtual monop-oly in commercial nickel plating from 1869 to 1886. His patent covered the use of pure nickel ammonium sulfate. Although Adams’s solution was similar to Bottger’s, his emphasis on operating the bath at neutral pH was undoubt-edly vital for controlling the quality of the nickel deposited,

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Patents Assigned to Drinkard Metalox, Inc. Justia

Abstract: An improved method for processing of nickel-bearing ores, laterite ores, saprolite and limonite ores, oxidic and sulfide ores, metallurgical wastes, and other metal-bearing materials, to recover the valuable minerals contained therein, comprising comminuting ore to a desired size; leaching the ore at about 70 C to 130 C for about 30 minutes to 4 hours with nitric acid, raising the

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Independence Group Seeks Patent for Nickel Conversion Process

Independence Group Seeks Patent for Nickel Conversion Process Olivia Da Silva April 2nd, 2019 Independence Group has announced the development of a new process to produce high-quality nickel

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Electroless nickel alloy plating bath and process for

An aqueous nickel phosphorus tin alloy electroless plating bath and process for depositing a nickel phosphorus tin alloy onto a substrate, particularly an aluminum substrate for memory disk applications, wherein the nickel phosphorus tin alloy deposit provides enhanced thermal stability, as defined by the inhibition of crystallization and suppression of magnetization upon high temperature

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