196results about "Zinc halides" patented technology

Organometallic compounds of Group IIB and IIIA metals that are substantially pure and contain low levels of oxygenated impurities are provided. Also provided are methods of preparing such organometallic compounds.

Provided is a manufacturing method of high purity oxide powder including the steps of subjecting a raw material such as Zn-containing scrap to acid leaching or electrolytic extraction, thereafter performing solvent extraction and activated carbon treatment thereto in order to remove impurities, neutralizing the resultant solution freed of impurities with an alkaline solution to obtain zinc hydroxide, and firing the zinc hydroxide to obtain zinc oxide. Provided are high purity zinc oxide efficiently freed of impurities, in particular C, Cl, S and Pb impurities, at low cost and the manufacturing method thereof; a target manufactured by firing the high purity zinc oxide; and a high purity zinc oxide thin film obtained by the sputtering the target.

The instant invention provides methods and compositions for the treatment of cancer.

The invention relates to three-ingredient eutectic ionic liquid and a preparation method thereof. The three-ingredient eutectic ionic liquid consists of ILX, MH and HBD, wherein ILX is ionic liquid with negative-monovalent halogen ions which serve as negative ions, MH is transition metal haloid, and HBD is a compound with multiple hydrogen bonds. The preparation method comprises the following steps of: uniformly mixing ILX, MH and HBD according to the molar ratio of 1: 1: n (n= 0.5-4), heating up to the temperature of 100-140 DEG C, and then, carrying out heat preservation for 2-4 hours until a mixture is completely dissolved. According to the ionic liquid disclosed by the invention, the melting point is extremely low, the viscosity is low, the conductivity is high, the dissolution performance is good, and the ionic liquid has Lewis acidity and catalysis performance, so that the ionic liquid can be widely applied to organic synthesis reaction, the preparation of nano and mesoporous materials, gas absorption and the like; and the preparation process is simple, the raw materials are readily available, the cost is low, no organic solvents are used and no toxic substances are emitted during reaction, no byproducts are produced, and the ionic liquid is biodegradable, so that the ionic liquid is suitable for industrial production.

The disclosed processes can be effective for treating various materials comprising several different metals. These materials can be leached with HCl for obtaining a leachate and a solid. Then, they can be separated from one another and a first metal can be isolated from the leachate. Then, a second metal can further be isolated from the leachate. The first and second metals can each be substantially selectively isolated from the leachate. This can be done by controlling the temperature of the leachate, adjusting pH, further reacting the leachate with HCl, etc. The metals that can be recovered in the form of metal chlorides can eventually be converted into the corresponding metal oxides, thereby allowing for recovering HCl. The various metals can be chosen from aluminum, iron, zinc, copper, gold, silver, molybdenum, cobalt, magnesium, lithium, manganese, nickel, palladium, platinum, thorium, phosphorus, uranium, titanium, rare earth element and rare metals.

The invention discloses a method for preparing alkali zinc chloride nano-powder in hexagonal flake structures, which is characterized by including steps: dissolving zinc chloride and hydroxyl reagent into water or water-alcohol mixed solution, adjusting the solution pH within a range of from 2.0 to 9.0, and obtaining the alkali zinc chloride nano-powder after chemical precipitation reaction under water bath at 50-99 DEG C or heating via an oven for 0.1-72 hours. The molecular formula of the alkali zinc chloride is Zn5(OH)8C12 (H2O), each flake is regularly hexagonal, the size of each flake ranges from 0.1 micrometer to 100 micrometer, and the thickness of each flake ranges from 20 nanometers to x micrometers. The alkali zinc chloride nano-powder which is a zinc-contained compound in a special hexagonal flake structure is expected to be applied in fields of chemical synthesis, chemical catalysis, photocatalysis, sensors, nano devices and the like.

A hydrometallurgical process utilizing an atmospheric calcium chloride leach to selectively recover from various metal feed stocks (consisting of elemental metals, metal oxides, metal ferrite, metal hydroxide, metal carbonates, metal sulfate/sulfur compounds, and their hydrates, specifically including but not limited to EAF Dust K061) zinc, lead, cadmium, silver, copper and other valuable metals to the exclusion of iron, magnesium, halogen salts and other unwanted elements. The process solves the problem of iron and magnesium leach solution contamination because iron is unexpectedly converted to magnetite. The heavy metals are cemented out of solution using zinc or other selected dust at a pH of 6 or greater under unique and unexpected conditions, which do not require acid. Simonkolleite/zinc- oxychloride/zinc-hydroxide is produced from the purified zinc chloride complex pregnant leach solution and is converted directly to high purity active rubber grade 99+% zinc oxide having small particle size and high surface area. The products are metal concentrates suitable for: metal refiner/processors, production of elemental metal, or other conversion processes. The process removes Arsenic and Fluorides in the feed material. The process also solves the problem of chloride contamination in the zinc oxide and prevents heavy metal contaminants in the hydrometallurgically produced zinc oxide derived from feed stocks containing chlorides or when chlorides are used to leach the metal bearing feed stocks. In one embodiment, calcium and/or magnesium compounds are added to the iron bearing waste to increase the recovery of zinc and other non-ferrous metals and to produce an iron bearing flux. The process is environmentally friendly and fully recycles all streams.

The invention relates to treatment of waste metal materials, and in particular relates to a method for recycling germanium, gallium, indium and selenium in a waste diode. The recycling method comprises the following steps of: (1) crushing the waste diode; (2) separating plastic powder from metal powder; (3) oxidizing roasting; (4) recycling selenium; and (5) recycling gallium, indium and germanium. By using the method, the pollution of the diode on the environment is reduced, valuable elements of selenium, indium, gallium and germanium are recycled, and mineral resources are saved; and the method is simple to operate, lower in cost, high in recycling rate of selenium, indium, gallium and germanium elements and very high in purity of recycling products.

The invention discloses a method for preparing basic zinc chloride, which comprises the following steps: adding zinc hydroxide slurry into zinc chloride solution in a molar ratio of the zinc hydroxide to the zinc chloride being 3-4.5:1 to perform reaction at the temperature between 70 and 105DEG C and a pH value between 5 and 9, and obtaining a reaction product after the reaction; washing the reaction product with water, and centrifuging and drying the reaction product to obtain the basic zinc chloride. The preparation method has sample and safe operation, low waste emission and low production cost; and the product has better quality.

The invention discloses a synthesis method of basic zinc chloride monocrystal nanorods. The synthesis method is characterized by comprising the following steps: taking zinc chloride and ammonia water as raw materials and reacting the raw materials at the room temperature; washing with deionized water, and centrifuging; adding deionized water which is 10-20 times of the volume of a sample, heating in an oven at 80 DEG C for 2 hours and then standing still; washing the sample with absolute ethyl alcohol, and then centrifuging; and drying in the oven at 40 DEG C for 6 hours to prepare the basic zinc chloride Zn5(OH)8Cl2.H2O monocrystal nanorods with diameters of about 70 nm and lengths of 400nm. The product prepared by the synthesis method has a wide application prospect and can be applied to various fields such as chemical synthesis, photocatalysis, sensors and nano devices, and the synthesis method is in no need of any additives or expensive equipment, and has the advantages of simplicity and convenience in operation, easiness in control and industrialization, low production cost, and the like.

The invention relates to a method for comprehensive treatment and utilization of high-zinc-content waste acid. By reasonably designing process steps and reaction agents of the method for comprehensive treatment and utilization of the high-zinc-content waste acid, effective separation, recycling and reutilization of iron and zinc are achieved, iron and zinc resource waste is avoided, a by-product industrial calcium chloride solution having a wide industrial application value and meeting the national quality standard is also obtained, comprehensive treatment and utilization of the high-zinc-content waste acid is successfully achieved, and the method is simple in process, lower in cost, green and environmentally friendly.

The invention belongs to environmental protection and resource recycling projects and relates to a method for recycling metals in sludge from wire rope production; sludge and acid waste from wire rope manufacturers have a high content of heavy metal lead (2000 ppm and above), which usually does not meet the economic requirement of industrial extraction, and are unable to be treated by the wire rope manufacturers. By using mixing reaction of sludge with the acid waste and electrochemical methods, the problem that the sludge and acid waste are difficult to treat is well solved.

Provided is a production method and a production apparatus using a method for producing a solid product by a reaction of gaseous raw materials with a plurality of components including a step of conducting the reaction using a reactor disposed in a vertical direction; a step of feeding the gaseous raw materials with a plurality of components from the upper part of the reactor; a step of, in the lower part of the reactor, forming a seal gas layer composed of a gas having a high density and fed continuously from the lower part of the reactor; a step of discharging an exhaust gas containing a by-product gas generated by the reaction and unreacted gaseous raw materials from somewhere in the upper part of the formed seal gas layer; and a step of accommodating a solid product in the seal gas layer of the lower part.

The invention discloses a method for preparing alkali zinc chloride, a trace element additive, which is prepared from zinc oxide and zinc chloride by the mol ratio of 4:1 at 75-95 deg. C, controlling pH=6-8, reacting 1.5-3 hours under normal pressure condition, then carrying out centrifugal separation, washing, drying, disintegrating, and packaging.

Process for the production of ZnCl₂ from a Zn bearing primary and/or secondary material comprising the steps of reacting the Zn bearing material with a chlorinating agent such as Cl₂ to convert metals into chlorides and vaporising the volatile components of the reaction product at a temperature between the melting point of said reaction product and the boiling point of ZnCl₂, thereby recovering a Zn rich chlorinated melt, and thereafter distilling ZnCl₂ from this Zn rich chlorinated melt, thereby recovering purified ZnCl₂ and a Zn-depleted chlorinated melt.

The invention discloses a method for preparing active carbon from biomass, and active carbon prepared by using the method. According to the method, the active carbon with an ultra-high specific surface area is prepared through baking, breaking, rapid stirring and chelating of an appropriate proportion of an activating agent, high-temperature pyrolysis and activation, acid washing and other steps. Compared to active carbon in the prior art, the active carbon of the invention has the advantages of usage of widely available and cheap raw materials, reutilization of the waste, rich pores and ultra large specific surface area, and has important application value in the fields of electrochemistry and pollutant adsorption. The method is simple in steps and suitable for industrial mass production.

The patent discloses a method for utilizing magnesium resources in a wet zinc smelting process. The method comprises the steps of adding magnesium fluoride seed crystals and zinc fluoride to a magnesium-containing zinc sulfate solution to obtain coarse grains crystals of a magnesium fluoride precipitate, and conducting liquid-solid separation; adding concentrated sulfuric acid to the magnesium fluoride precipitate to obtain hydrogen fluoride gas and magnesium sulfate; introducing the hydrogen fluoride into a container containing zinc oxide soot to obtain zinc fluoride; adding a catalyst and anatmosphere regulating agent to the magnesium sulfate, and conducting heating and decomposing to obtain magnesium oxide; and adding magnesium sulfate, an an organic admixture, an inorganic admixture,a reinforcing agent and short fiber to the magnesium oxide, and conducting uniform mixing, so as to obtain magnesium oxysulfate cement. Compared with the prior art, the method has the advantages of low production cost, high production efficiency and good product quality.

The invention discloses a technique for recovering zinc chloride from waste water in reduction process of isooctyl thioglycolate, which is suitable for waste water treatment for the reduction process of the isooctyl thioglycolate. The technique comprises the following steps: firstly, the waste water is pumped into a storage tank by a vacuum pump and stands at normal temperature for precipitation and impurity removal; then the deslagging is carried out on the rest solution through a pumping filtration tank, the precipitation tank stands at the normal temperature for precipitation, and the BaCl2 is added and stirred at the normal temperature; the rest solution is pumped into a concentration kettle by using a corrosion-resistant centrifugal pump, and after temperature rising at low speed and vacuum treatment, and the KMnO4 and the NaOH tablet are added in, stirred and precipitate. The hydrogen chloride gas in the concentration kettle becomes muriate acid through a condenser, is put into a hydrochloric acid finished product storage tank, and the concentrated ZnCl2 solution in the concentration kettle is pumped to a zinc chloride finished product storage tank by using the vacuum pump after temperature reduction. By adopting the technique, not only all the zinc chloride and all the hydrogen chloride in the waste water are recovered, the pollution of the waste water in the original technique is eliminated, but also the wastes are reduced, the economic income is added, and the economic benefit is remarkable; and the technique is simple, easy to be operated and is feasible for popularization.

The invention discloses a method for preparing 1-chloro-2,2-difluoroethylene through treating difluorotrichloroethane which is a byproduct in the production of trifluorodichloroethane as a raw material. The addition of a reaction assistant in a reaction process can substantially improve the raw material conversion rate and the product yield. The prepared 1-chloro-2,2-difluoroethylene is an important fluorine fine chemical engineering raw material, and can be used in the production of fluorine-containing finishing agents, fluorine-containing surfactants and other fluorine-containing fine chemicals as a key intermediate.