68results about "Cobalt halides" patented technology

The invention belongs to the fields of electrochemistry and new energy and relates to a lithium ion battery negative electrode material Co(OH)F having a hexagram-shaped structure and a preparation method thereof. The lithium ion battery negative electrode material Co(OH)F is synthesized through a solvothermal method. Through adjustment and control of the synthesis technology, solid and hollow hexagram-shaped structure Co(OH)F materials having different morphologies are obtained. The hollow structure can buffer the volume expansion of the electrode material during the circulation so that good circulation stability is kept. The hollow structure is conducive to infiltration of an electrolyte, increasing of the electrode reaction area and improvement of lithium-ion transmission efficiency. The synthesis method is simple in operation, can be carried out under mild conditions, is environment-friendly, has strong repeatability and a short period and is easy to industrialize.

A method for recovering hydrochloric acid and metal oxides from a chloride liquor is described. The method uses a chloride liquor including the metal and mixing the liquor and a matrix solution to produce a reaction mixture, wherein the matrix solution assists oxidation / hydrolysis of the metal with HCl production. In a preferred embodiment the matrix solution includes zinc chloride in various stages of hydration and an oxygen containing gas is added to the mix. A method where the improvement is the mixing of a liquor and a matrix solution where the solution assists hydrolysis of the metal with HCl production is also disclosed. The reactor is a column reactor in a preferred embodiment. Further disclosed is the method of using the matrix solution and a reactor for recovering hydrochloric acid and for oxidizing / hydrolysis of a metal.

The invention relates to a method for deeply removing copper from a cobalt salt solution. A two-stage copper removal technology is adopted for removing copper from a cobalt chloride solution. A regenerated copper removal agent used in a first stage of copper removal is sourced from copper removal slag produced by a second stage of the copper removal, and finally qualified copper slag is discharged; and cobalt thiocarbonate is added in the second stage of the copper removal, so that a qualified copper-removed liquid is produced. The method provided by the invention has the advantages that the characteristic that the copper removal slag can be regenerated into the copper removal agent is fully utilized, copper concentration can be reduced to below 1mg / L, and copper removal slag with the copper-cobalt ratio higher than 15 / 1 is obtained.

A method for directly preparing anhydrous cobalt chloride powder from cobalt chloride solution is characterized by heating air through an air heater to convert the air into hot air, enabling the hot air to enter an atomizing drying chamber in spiral mode under the condition that air inlet temperature of a cyclone in the drying chamber is controlled between 230 DEG C to 280 DEG C, and air outlet temperature of the cyclone in the drying chamber is controlled between 130 DEG C to 200 DEG C, and simultaneously locating the cobalt chloride solution with the cobalt density ranging from 80g / L to 130g / L into a centrifugal atomizer at the top of the atomizing drying chamber in pumping mode to enable the cobalt chloride solution to be atomized into liquid mist drops and contacted with the hot air in parallel flowing mode, so that water in the cobalt chloride solution can be quickly evaporated, and the cobalt chloride solution can be instantaneously dried to be the anhydrous cobalt chloride powder. Atomizing drying equipment is matched with an auxiliary dust collection system to collect product, the atomizing drying chamber, the cyclone separator and the auxiliary dust collection system can be made of corrosion resistant materials. The anhydrous cobalt chloride powder can be collected through the dust collection system made of corrosion resistant materials after being prepared by atomizing and drying the cobalt chloride solution. The method is convenient to operate, large in output, simple in process and capable of both improving product collection rate and reducing production cost.