7results about "Nickel carbonyls" patented technology

This invention relates to the production of nickel tetracarbonyl and cobalt tricarbonyl nitrosyl from mixed metal hydroxide precipitate (MHP) comprising nickel, cobalt, and manganese.

The present application relates to the technical field of gasification metallurgy, and particularly relates to a production and preparation method of high-dissolution-performance sulfur-carbonyl nickel pellets, to solve the problem that the content of impurities in sulfur-containing nickel metal is high, the uniformity of S element distribution in the sulfur-containing nickel metal is poor, and the dissolution stability, plating solution stability and plating layer quality are greatly affected when traditional electrolytic method or smelting method is used to smelt nickel. The method can effectively remove the difficult-to-remove impurities in the group VIII metal and CO gas through selective reaction, and has lower metal impurities than traditional electrolytic method and smelting method. The high-dissolution-performance sulfur-carbonyl nickel pellets are prepared through chemical atomic vapor deposition reaction, and the S element in the sulfur-containing nickel metal is more uniformly distributed, so that the dissolution stability, plating solution stability and plating layer quality are better, thereby effectively reducing the local passivation of anode dissolution, plating solution composition fluctuation and plating layer performance difference caused by uneven S distribution.

The invention discloses a preparation method and application of a carbonylation nickel-based supported catalyst, and belongs to the technical field of catalysts. The preparation method comprises the following steps: carrying out pretreatment of roasting and acid treatment on a carrier; heating the pretreated carrier to 100-150 DEG C in an inert atmosphere, and introducing nickel tetracarbonyl steam, so that the nickel tetracarbonyl steam is thermally decomposed on the surface and in pore channels of the carrier and nickel particles are deposited; and then carrying out heating purification treatment to obtain the final catalyst. By adopting the chemical vapor deposition method, highly uniform dispersion of the active metal nickel on the carrier is realized, and the method is simple in process and environment-friendly. The prepared catalyst has the characteristics of small nickel particle size, high dispersity, strong carrier action and the like, and shows high activity, high selectivity and excellent stability in carbon dioxide hydrogenation methanation and other reactions. Carbon monoxide generated by decomposition can be recycled, and the principle of green chemistry is met.

Methods and reactor systems are provided for extracting metals, such as nickel, cobalt, and iron, from reduced, activated metal compounds (“feed materials”). Feed materials may be derived from mixed hydroxide precipitate. Feed materials and carbon monoxide gas are delivered into an extraction reactor of a reactor system, such as a shell tube heat exchanger. A flow path therein directs the feed material downward and the carbon monoxide gas upward, enabling contact therebetween, forming at least one metal carbonyl gas and a solid residue therein. The flow path further directs the upward flow of metal carbonyl gases, and the downward flow of the residue. Methods and reactor systems may further purge the residue: using nitric oxide to convert any remaining dicobalt octacarbonyl therein to cobalt tricarbonyl nitrosyl gas; using an inert gas to removing any cobalt tricarbonyl nitrosyl therein; and using an inert gas-oxygen mixture, to form a passivated residue.

This invention relates to the recovery of nickel and cobalt from lithium ion battery materials comprising nickel, cobalt, and manganese, such as cathode active materials (CAM) and / or black mass (BM) derived from battery materials.

The invention discloses a precious metal secondary resource enrichment method, and belongs to the technical field of precious metal metallurgy. The method comprises the following steps: crushing a precious metal secondary resource, mixing the crushed precious metal secondary resource with low-grade ferronickel, a composite modifier and a reducing agent, and smelting and enriching to obtain a ferronickel alloy containing precious metal; the alloy is subjected to carbonylation separation after being atomized and pulverized, ferronickel is converted into a carbonyl ferronickel product, and precious metal is enriched in slag; and finally, the carbonylation slag is subjected to controlled electric chlorination purification, and high-grade precious metal concentrate is obtained. By means of the short process of smelting enrichment, carbonylation separation and chlorination purification, efficient recovery of precious metal (the yield is larger than or equal to 98%, and the enrichment ratio is larger than or equal to 160 times) and high-valued utilization of the trapping agent ferronickel are achieved, and the method has the advantages of being short in process, low in cost, environmentally friendly and high in resource utilization rate and is particularly suitable for treatment of complex precious metal secondary resources.

The invention discloses a method for comprehensively recycling a waste nickel net through a carbonylation method. According to the method, after the waste nickel net is subjected to mechanical crushing, screening, cleaning and drying pretreatment, a carbonyl compound removal tower of a vertical structure is filled with the waste nickel net, multiple material layers are arranged in the tower, and all the material layers are filled with pretreated waste nickel net particles. The carbonylation synthesis production exhaust gas is introduced into the tower, under the conditions that the temperature is 300-450 DEG C and the pressure is 0.1-0.2 MPa, waste nickel net particles are used as a reaction matrix, pyrolytic deposition of carbonyl compounds in the exhaust gas is achieved, and meanwhile nickel resources are recycled. And purifying the gas subjected to pyrolysis deposition to obtain high-purity CO, recycling the high-purity CO in the carbonylation synthesis process, participating the nickel-deposited material in the carbonylation synthesis reaction, and carrying out rectification decomposition to obtain a high-purity carbonyl product. According to the method, collaborative recycling of the waste nickel net and the carbonylation synthesis exhaust gas is achieved, the resource utilization rate is high, and the method is environmentally friendly, economical and remarkable in industrial application value.