2 results about "Iron phosphate" patented technology

The invention discloses dandelion-shaped iron phosphate microspheres and a preparation method thereof through electrochemical anode oxidation, relating to dandelion-shaped iron phosphate microspheres and a method for preparing the dandelion-shaped iron phosphate microspheres through electrochemical anode oxidation, and aiming to solve the problems that iron phosphate micro nanoparticles prepared by the prior art are long in synthesis time, high in synthesis temperature and complex in operation step. The method disclosed by the invention comprises the steps of preparing a mixed solution of phosphoric acid and ammonium fluoride of a certain molar concentration to serve as electrolyte for anode oxidation, and generating the dandelion-shaped iron phosphate microspheres on the surface of an iron foil under conditions of certain current by taking a high-purity iron foil as an anode and a platinum sheet as a cathode. The iron phosphate obtained by the invention is used as a precursor when being used for preparing lithium iron phosphate.

The invention belongs to the field of sewage treatment and discloses a novel sewage treatment agent and a preparation method thereof. The novel sewage treatment agent is prepared from, by weight, 4-10 parts of coal ash, 4-10 parts of sodium silicide, 4-10 parts of sodium polyacrylate, 5-10 parts of polymeric iron phosphate, 2-6 parts of adsorption substances, 3-9 parts of polymeric aluminum calcium chloride, 4-10 parts of ammonium persulfate, 3-9 parts of disodium hydrogen phosphate, 4-12 parts of zeolite and 80-100 parts of water. The novel sewage treatment agent is wide in pollutant treatment range, effective, extensive in material source, low in cost and widely applicable to treatment of municipal sewage and various types of industrial wastewater and treatment of polluted water of rivers and lakes, and treated water can be recycled.