1450 results about "Cu2 ions" patented technology

The present invention is directed to a biocidal water treatment composition, water treatment apparatus, and method of treating water to reduce levels of pathogens. The composition contains sources of copper, zinc, and silver metal ions within a crosslinked polymer matrix. Examples of these ion sources include copper sulfate, zinc sulfate, and silver nitrate. An example of the crosslinked polymer matrix is crosslinked chitosan, which also serves to clarify the water and release the metal ions over time. The product is easy to manufacture, and allows the use of decreased halogen sanitizer, as well as decreased copper ion, thereby decreasing the likelihood of staining. The product simultaneously provides good bactericidal and algaecidal properties, despite low levels of copper ion and low chlorine levels.

The invention discloses a modified magnetic biochar adsorbing material and application thereof. The adsorbing material is prepared through the following steps: taking agricultural waste corn stalks as a raw material, magnetizing and carbonizing the raw material, and adhering chitosan coating to the surface of the raw material. The adsorbing material is wide in raw material source, stable in structure, low in possibility of blocking, high in efficiency of effectively removing typical heavy metal pollutants namely cadmium ions and copper ions in water, convenient to separate, recycle and reuse and free of secondary pollution, achieves resource utilization, and has good environmental benefits and economic benefits.

The invention provides a method for recovering gold, silver, tin and copper from industrial wastes. The method comprises the following steps of: (a) adding the industrial wastes in hydrochloric acid solution, adding an oxidant, and performing oxidation acid-leaching treatment to obtain leaching slag, and solution containing tin ions and copper ions; (b) treating the leaching slag to obtain gold and silver; (c) adding iron in the solution containing tin ions and copper ions, and reacting to obtain copper, and a solution containing tin ions and ferrous ions; (d) adding lime in the solution containing tin ions and ferrous ions, and reacting to obtain tin, and solution containing ferrous ions; (e) heating the solution containing ferrous ions, charging air and adding lime, and reacting to obtain goethite and calcium chloride solution; (f) adding concentrated sulphuric acid in the calcium chloride solution to obtain calcium sulphate precipitate and hydrochloric acid solution. The various steps of the method disclosed by the invention are effectively coordinated; zero-discharge in production can be realized; precious metals are efficiently separated, and valent by-products of iron mine and gypsum are obtained; the method has good application prospect.

A CMP composition containing 5-aminotetrazole, e.g., in combination with oxidizing agent, chelating agent, abrasive and solvent and a method of use. Such CMP composition may be diluted during the CMP polish to minimize the occurrence of dishing or other adverse planarization deficiencies in the polished copper, even in the presence of substantial levels of copper ions in the CMP composition and at the copper / CMP composition interface during CMP processing.

The invention discloses an ammonium-amine coupling activation method based on a copper mineral sulfurization floatation system. For solving the problems of the conventional sulfurization floatation system that sulfurization efficiency is not high, the adsorption stability of a sulfide film on the surface of copper oxide ore is poor and the sodium sulfide generated an inhibiting action on copper sulphide ore, a 'vulcanizer-ammonium-amine salt' coupling vulcanization system is adopted, and ammonium-amine salt easily forms a coordination compound in various structures together with copper ions on the surface of ores; and a vulcanizer reacts with the coordination compound to form a 'novel copper sulphide' which can be firmly adsorbed on the surface of copper ore, the variation of the microstructure of the surface of copper ore is caused to strengthen hydrophobic property, therefore, the floatability of copper ore is greatly improved, and the high-efficiency recycle of copper in a mixed copper ore or copper oxide ore is realized.

It is an object of the present invention to provide a chemical conversion coating agent which places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum. A chemical conversion coating agent comprising: at least one kind selected from the group consisting of zirconium, titanium and hafnium; fluorine; and an adhesion and corrosion resistance imparting agent, wherein said adhesion and corrosion resistance imparting agent is at least one kind selected from the group consisting of: 1 to 5000 ppm (metal ion concentration) of at least one kind of metal ion (A) selected from the group consisting of zinc ion, manganese ion and cobalt ion; 1 to 5000 ppm (metal ion concentration) of alkaline earth metal ion (B); 1 to 5000 ppm (metal ion concentration) of metal ion (C) of Group III in the periodic table; 0.5 to 100 ppm (metal ion concentration) of copper ion (D); and 1 to 5000 ppm (as a silicon component) of a silicon-containing compound (E).

Abstract of the DisclosureA method for electrodeposition of bronzes, with which the substrate to be coated is plated in an acid electrolyte that contains at least tin and copper ions, an alkylsulfonic acid and a wetting agent, and the preparation of such an electrolyte.

The invention discloses a method for extracting metallic copper from a waste circuit board. The method comprises the following steps: firstly, crushing the waste circuit board from which elements and parts are removed into blocks, crushing by virtue of a crusher, and sieving by a 30-mesh sieve; sequentially carrying out winnowing and electric separation on the obtained granular powder to obtain a metal concentrate with relatively high copper content; leaching copper ions from the metal concentrate by using a leaching agent water solution which is composed of sodium chlorate, sulfuric acid and water; removing solid substances from the obtained leaching liquid by centrifugal separation or filter press filtration; carrying out five-stage extraction and second-stage reverse extraction on the obtained filtrate to obtain a copper-enriched solution, carrying out electrodeposition on the obtained copper-enrich solution by virtue of an electrode method, thus finally obtaining copper of which the purity is over 99.99% on the cathode material, so as to finish extraction of the metallic copper from the waste circuit board. According to the method disclosed by the invention, the metallic copper can be efficiently extracted from the waste circuit board; the method has the technical characteristics of high efficiency, energy saving, low cost, simple process and the like and is capable of achieving recycling and innocent treatment of the waste circuit board.