55 results about "Zirconium oxide hydrate" patented technology

The present invention provides new process for preparing inorganic fine particles, which suppresses agglomeration and adhesion of particles due to heat when preparing powder from a raw material liquid such as a slurry of zirconia hydrate fine particles in order to obtain inorganic raw material powder having sharp particle size distribution. Furthermore, the present invention provides a new process for preparing inorganic fine particles, which can make the chemical structure homogenous among the produced particles and inside the particles even in a multi-component system. The present invention provides a process for preparing inorganic fine particles, which comprises heating and applying impulse waves to a raw material liquid.

Disclosed is a process for preparing high-purity superfine zirconia by zirconium oxychloride, which comprises recrystallization purifying, charging ammonia for sedimentation, obtaining zirconium hydroxide colloid that is easy for filtration and washing, after filtering and washing, charging minute quantity of emulsifying agent, carrying out high shearing emulsification and high-energy ball grinding, thus obtaining stable hydrated zirconium dioxide with good dispersity, then drying with spraying drying apparatus, calcining to obtain crude product of high purity ultra-fine zirconium dioxide, finally subjecting the crude product to high pressure disintegration.

A pearl-like decorative paper and a thermosetting resin decorative sheet having postforming suitability with no blisters or cracking generation by the postforming process even in the case of the pearl-like design are provided. In the pearl-like decorative paper 10 having a pearl ink layer 3 containing a pearl pigment on a paper substrate 1, a pearl pigment of a scaly foil of mica covered with a titanium dioxide and/or an iron oxide, and the surface thereof further treated with a zirconium oxide hydrate is used as the pearl pigment. By providing a pattern ink layer 2 of an ordinary ink therebetween, a further better design can be provided. Then, by impregnating the pearl-like decorative paper with a thermosetting resin such as a melamine resin, laminating the same with an adherend 6 such as a backing substrate 4 and an overlaying paper 5, and applying thermal pressing molding for curing the resin, a pearl-like thermosetting resin decorative sheet 20 including a pearl-like decorative paper 10A with the resin cured can be provided.

The invention provides a method for coating hydrous zirconium oxide on the surface of rutile type titanium dioxide. The method comprises the following steps of: a, dispersing the rutile type titanium dioxide particles in deionized water and adding 50g/L solution of sodium hexametaphosphate serving as a dispersing agent to prepare a suspension, wherein the concentration of the rutile type titanium dioxide is 0.1g/ml; and the ultrasonical dispersion of the suspension is performed for 30 minutes, wherein the volume ratio of the solution of sodium hexametaphosphate to the suspension of titanium dioxide is 1:130; b, transferring the pulp prepared by the step a to a water bath at a constant temperature of between 50 and 80 DEG C and stirring, adjusting a pH value of the pulp to 7 to 11, adding 1 mass percent solution of zirconium oxychloride and sulfuric acid solution, and ageing the pulp for 2 hours while continuously stirring the pulp, wherein the adding amount of the solution of zirconium oxychloride is 1 to 5 percent of the weight of TiO2 based on ZrO2; and c, pump-filtering the pulp prepared by the step b, washing the pulp by deionized water, pump-filtering the filter cake until the conductivity of the filtrate is less than 20ms/m; and drying the filter cake by blasting at the temperature of 120 DEG C for 24 hours and crushing the filter cake to obtained the finished product.

The present invention is preparation process of spherical nanometer crystal zirconium dioxide powder stabilized with yttrium oxide and belongs to the field of the technology of preparing nanometer zirconium dioxide and specific ceramic, and the zirconium dioxide powder is main material for making structural ceramic. Nanometer crystal zirconium dioxide powder is prepared through hydrothermal decomposition and deposition process and then added with adhesive and dispersant, and the mixture is then spray dried to prepare yttrium doped spherical nanometer crystal zirconium dioxide powder. The present invention features the simple technological process, and the spherical nanometer crystal zirconium dioxide powder has great specific surface area, homogeneously distribution particle size, no coagulation and good dispersivity.

The invention belongs to technology of producing medical radioactive nuclide, and in particular relates to a process for extracting and purifying iodine-131 through a homogeneous aqueous solution nuclear reactor. The process comprises the following steps: adsorbing iodine-131 is from a bulk fuel solution after the reactor operates by an aluminum oxide extraction column or a hydrous zirconium oxide extraction column; and then cleaning the extraction column by using diluted HNO3, H20, NH3.H20; desorbing the iodine-131 on the extraction column by an NH3.H20 or NaOH solution; and finally, separating and purifying the desorbed iodine-131. The yield of the I obtained by the process is more than 50 percent, and purity of the I meets the requirement of a medical NaI solution.

The invention discloses a method of a mother liquid for preparing hydrous zirconium oxide with high purity and a zirconium salt in the production process of zirconium oxychloride. The invention comprises the processes of concentration, hydrolysis, acid corrosion, secondary concentration, crystallization and acid pickling. The invention employs the mother liquid that produces the zirconium oxychloride as the raw material to produce the hydrous zirconium oxide with the high purity, prepare the high value zirconium salt and recycle hydrochloride in the solution. In the process of removing impurities from the solution, a lot of impurities are removed, which leads the product to have the high purity, stable performance and good quality; the hydrochloride can be used repeatedly, which reduces the production cost; the production process of the invention is simple and convenient and is suitable for large scale industrial production.

The present invention provides a nanometer-hydrous zirconium oxide-loading composite hydrogel having carboxyl and hydroxyl, preparation and applications thereof. According to the present invention, two monomers such as 2-hydroxyethyl acrylate and trans-aconitic acid are mixed with distilled water, then radiation polymerization is performed to prepare a polymer hydrogel, the polymer hydrogel is adopted as a template to perform in-situ nanometer hydrous zirconium oxide loading, the in-situ nanometer hydrous zirconium oxide loading method is an in-situ chemical precipitation and heat treatment combination method, the concentration of a ZrOCl2 solution for the in-situ chemical precipitation reaction is 0.2-0.6 mol/L, the concentration of a NaOH solution is 0.6-1 mol/L, and the reaction temperature is controlled at 25 DEG C; and the nanometer hydrous zirconium oxide is subjected to in-situ loading, the method is simple, the operation is easy, heavy metals can be effectively removed by using the prepared composite hydrogel in adsorption of heavy metal ions in wastewater, and the service life of the composite hydrogel is long.

The invention discloses a methanol thermosynthesis method for preparing stable spherical tetragonal phase rare-earth yttrium zirconium oxide, comprising the following steps of: accurately weighing ZrOC12.8H2O and YC13.6H2O serving as raw materials according to a molar ratio of 98: (2-87): 13; drying the raw materials under the low temperature of less than 100 DEG C and dissolving the raw materials with absolute methanol; uniformly stirring a mixture and then transferring the mixture to a dry pressure-resistant container; sealing the dry pressure-resistant container and raising the temperature to 160 and 220 DEG C for reacting for 12-48 hours in a heat preservation mode; cooling to room temperature and opening the airtight container; filtering out precipitates; cleaning the mixture for three times with absolute methanol and drying the mixture in a baking oven under the temperature of between 50 and 150 DEG C to prepare zirconium oxide hydrate with stable tetragonal phase rare-earth yttrium having uniform granularity and regular sphere; and forging the zirconium oxide hydrate under high temperature to prepare zirconium oxide powder with stable tetragonal phase rare-earth yttrium. The method has the advantages of being simple in process, easy for operation, low in energy consumption and the like, and can be applied to preparation of high-quality yttrium zirconium ceramic powder in a large scale.

A surface-treated steel sheet includes a steel sheet; and a plating layer which is formed on one surface or both surfaces of the steel sheet and which includes zinc and one of the group consisting of vanadium and zirconium, wherein the plating layer includes dendrite-shaped crystals including metallic zinc, and intercrystal filling regions which fill spaces between the dendrite-shaped crystals and show amorphous diffraction patterns when electron beam diffraction is carried out, wherein when the plating layer includes the vanadium, the intercrystal filling regions include a hydrated vanadium oxide or a vanadium hydroxide, and, wherein when the plating layer includes zirconium, the intercrystal filling regions include a hydrated zirconium oxide or a zirconium hydroxide.

The invention discloses a preparation method of a hollow nanometer hydrous zirconium oxide loaded millimeter-level polymer sphere. According to the method, a non-solvent induced phase separation method in the field of membrane separation is used for preparing the hollow nanometer hydrous zirconium oxide loaded millimeter-level polymer sphere; concretely, the hollow nanometer hydrous zirconium oxide sphere is prepared by using a nanometer silicon dioxide sphere as a template; a millimeter-level polymer sphere with the very-narrow particle size distribution is obtained through an injection pump extrusion process; few pore-foaming agents are added, so that the developed pore structure is formed; good sphericity degree and strength are maintained. The loaded hollow nanometer hydrous zirconium oxide prepared by the method has great adsorption capacity and little adsorption capacity loss, can be easily recovered and repeatedly utilized, and is also applicable to relatively harsh application environment; the adsorbent loss is relatively low under the extremely low pH condition; wide application prospects are realized in the field of heavy metal water pollution treatment.

The invention discloses a method for recovering phosphate in town sewage by using resin loaded with hydrous zirconium oxide, and belongs to the technical field of treatment of urban sewage. The methodis characterized in that for 4-12mg/L of lower concentration of phosphorus in urban domestic sewage, eutrophication of a water body is easily caused in rivers or lakes due to discharged phosphorus, and the current chemical precipitation method and biological phosphorus-removing method cannot meet stricter and stricter phosphorus discharging requirements, therefore, a high and new technology is desired to enhance removal of the phosphorus in effluents. The method disclosed by the invention has the beneficial effects that the resin D280 loaded with the hydrous zirconium oxide is adopted to recover the phosphate in the town sewage, and when the temperature is 25-30 DEG C and the pH is 6-7, the adsorption capability of D280-Zr can reach 97-100%; further, when containing competitive negative ions, D280-Zr still represents better adaptability and adsorption property; after 6 times of adsorption and desorption circulations, the adsorption rate of D280-Zr can still be maintained at 80% or more; therefore, by adoption of the resin material, the energy consumption can be saved, and further the method has more application value.