38results about How to "Pure tone" patented technology

The invention discloses cobalt black pigment for ceramic ink. The cobalt black pigment is prepared from the following raw materials in percentage by weight: 35%-45% of Co3O4, 15%-20% of NiO, 8%-15% ofFe2O3, and 20%-30% of Cr2O3. Through massive test, an ideal pigment component formula scope and a pigment preparation method are obtained, and the obtained cobalt black pigment is plump in color, pure in color shaft and low in magnetic property.

The invention relates to a white glaze, a whole body borderless ceramic brick containing the white glaze and a preparation method thereof. The white glaze includes the following raw materials in percentage by weight: 60-75% of opacifying agent, 15-28% of opacifying frit, and 4-15% of clay; the whole body borderless ceramic tile containing white glaze consists of a green body decorative layer, It is composed of white glaze layer, integrated decorative layer, transparent glaze or protective glaze layer. The preparation method includes: grinding the surface of the green body with a sponge material; after the drying process, printing a white glaze on the surface of the green body with a rubber roller, and the white glaze becomes a whole body borderless ceramic tile after being fired at 1100°C to 1200°C The white glaze layer; the white glaze weighs the material according to the formula, adds 45wt% printing oil, and ball mills until the fineness of the glaze slurry is less than 40 microns; adjust the viscosity of the glaze slurry to the Ennian viscosity of 18-23 seconds, and the specific gravity of the glaze slurry is 1.53-1.62.

The invention relates to a preparation method of 3435 green for ceramic high-temperature glaze and provides a preparation method of green pigment for ceramic high-temperature glaze, which is high-temperature resistant, ahs strong tinting power and simple production process; the method comprises the following steps: raw material is ground into powder after burdening, grinding, sieving, dehydration and drying and high-temperature baking are carried out; the weight percentage of the raw materials is that: 58-68 percent of Cr2O3, 5-10 percent of Co2O3, 8-12 percent of Fe2O3, 10-14 percent of Al2O3 and 2-8 percent of ZnO2, when in grinding, the raw materials are added in a wet-type ball grinding mill, the raw material: balls: water is equal to 1: 3: 1, the raw materials are ground for 48-72 hours and then are sieved by a 250-mesh screen, and the baking temperature is 1350 DEG C. the pigment has pure color, strong tinting power and strong high-temperature resistance, and discoloration and color fading phenomenon of the ceramics can not happen when baking is carried out at 1300 DEG C temperature.

The invention discloses lanthanum-yttrium co-doping bismuth vanadate inorganic pigment and a preparation method thereof. The general formula of the inorganic pigment is Bil-x-yLaxYyVO4, wherein x is larger than or equal to 0.02 and less than or equal to 0.1, and y is larger than or equal to 0.02 and less than or equal to 0.1. Chelating agents are utilized to assist and a microwave hydrothermal method is adopted to prepare the lanthanum-yttrium co-doping bismuth vanadate pigment, the slow release of metal ions in the reaction process is facilitated through the addition of various chelating agents, so that the process of preparing the lanthanum-yttrium co-doping bismuth vanadate pigment is carried out relatively lenitively; through the adoption of the microwave hydrothermal method to prepare, the preparation time is reduced. The lanthanum-yttrium co-doping bismuth vanadate pigment prepared by the invention has the advantages that the improvement of the color generating performance of the bismuth vanadate pigment is facilitated through the doping of lanthanum and cerium.

The invention discloses a dysprosium and yttrium codoped pucherite inorganic pigment and a preparation method thereof. A general formula of the pucherite inorganic pigment is Bi1-x-yDyxYyVO4, wherein x is smaller than or equal to 0.1 and greater than or equal to 0.02; y is smaller than or equal to 0.1 and greater than or equal to 0.02; the pucherite pigment codoped with a dysprosium element and a yttrium element is prepared by using assistance of chelating agents by a microwave hydrothermal method; different chelating agents are added; slow release of metal ions in a reaction process is facilitated, so that the process of generating the pucherite pigment codoped with the dysprosium element and the yttrium element is carried out in a mitigating manner; the preparation time is shortened in preparation employing the microwave hydrothermal method. According to the pucherite pigment codoped with the dysprosium element and the yttrium element prepared by the preparation method, doping of the dysprosium element and the yttrium element contributes to improvement of the coloring property of the pucherite pigment.

The invention relates to a nano-vanadium-zirconium blue ceramic colorant and a preparation method thereof. The nano-vanadium-zirconium blue ceramic colorant is made of the following raw materials in parts by weight: 8-15 parts of vanadium pentoxide, 30-50 parts of zirconium oxychloride 30-45 parts of sodium silicate, 25-40 parts of acid or strong acid and weak base salt, 1-2.5 parts of sodium chloride and 1-2.5 parts of sodium fluoride; the present invention uses sodium silicate, zirconium oxychloride, hydrogen Sodium oxide, vanadium pentoxide and acid or strong acid and weak base salt were used as initial raw materials, and water was used as solvent to synthesize vanadium-zirconium blue gel precursor by sol-gel method, and sodium chloride and sodium fluoride were used as composite minerals A nano-vanadium-zirconium blue ceramic pigment was prepared by low-temperature sintering; the obtained pigment has pure color tone, low firing temperature, low energy consumption, low-cost and easy-to-obtain raw materials, simple and easy-to-control production process, and the solvent environment used Friendly, the product is loose and easy to powder, the color rendering effect is good, and it is convenient for industrial production. It is an ideal color material for the production and firing of high-quality ceramic products.

The invention relates to quasi graphene oxide, quasi graphene and a quasi-graphene-based pearlescent pigment based on the quasi graphene oxide or quasi graphene. The quasi graphene oxide is obtained from the following steps: (A) oxidizing flake graphite powder with potassium permanganate; (B) intercalating concentrated sulfuric acid to oxidized graphite powder; and (C) peeling intercalated graphite powder, washing the obtained product till the product is neutral, and performing filtration and drying. Quasi graphene is prepared by reducing quasi graphene oxide. The quasi-graphene-based pearlescent pigment based on the quasi graphene oxide or quasi graphene is high in covering power and chroma and pure in tone, is controllable in technology, and can be widely applied to cosmetics, synthetic leather, plastics, textile and garment or paint.

The invention relates to a special zirconium oxychloride for a coated cadmium selenide red ceramic pigment and a preparation method thereof, belonging to preparation of zirconium compounds. The special zirconium oxychloride is prepared from industrial zirconium oxychloride by purification by recrystallization. The preparation method is characterized by comprising the following steps: (1) dissolving industrial zirconium oxychloride in a 6.5-6.8 mol / L purified hydrochloric acid water solution, and supplementing industrial zirconium oxychloride until the zirconium oxychloride concentration is 140-160 g / L on the basis of ZrO2; and (2) adding a nonionic surfactant as a dispersing agent into the crystalline solution. The invention provides a high-coating-rate favorable-high-temperature-stability special zirconium oxychloride for a coated cadmium selenide red ceramic pigment capable of ensuring pure color tone of the pigment and a preparation method thereof. The coating rate of the coated cadmium selenide red ceramic pigment prepared from the special zirconium oxychloride is up to 7.2%; and the coated cadmium selenide red ceramic pigment has pure color tone and excellent high-temperature stability, and can resist high temperature of 1150 DEG C above.

The invention discloses a Monascus purpureus and its application in food production. The Monascus purpura is preserved in the General Microorganism Center of China Microbiological Culture Collection Management Committee, and the preservation number is: CGMCC No.11315. It hardly produces citrinin, and it can produce natural monascus pigment, which has extremely high color value, and can be used in the preparation of dairy products or other food processing techniques.

The invention discloses a dysprosium and praseodymium co-doped bismuth vanadate inorganic pigment and a preparation method thereof. The bismuth vanadate inorganic pigment has a general formula of Bil-x-yDyxPryVO4, wherein x is not less than 0.02 and not more than 0.1 and y is not less than 0.02 and not more than 0.1; the dysprosium and praseodymium co-doped bismuth vanadate pigment is prepared by chelating agents and a microwave hydrothermal method; the addition of different chelating agents is favorable for slow release of metal ions in a reaction process, so that the process of generating the dysprosium and praseodymium co-doped bismuth vanadate pigment is more slowly proceeded; the microwave hydrothermal method is used to prepare the pigment, so that the preparation time is shortened; the doping of dysprosium and praseodymium in the dysprosium and praseodymium co-doped bismuth vanadate pigment prepared by the method is favorable for improving the color generation performance of the bismuth vanadate pigment.

An underglaze used in the production of fully polished glazed tiles, which is beneficial to the color development of ceramic inks. The main raw materials of the underglaze are: 20-30% of potassium feldspar powder, 10-20% of feldspar powder, 5-10% of calcined kaolin powder, quartz powder 8-13%, kaolin powder 5-10%, calcined alumina powder 16-21%, calcined talc powder 1-3%, calcined zinc oxide 1-3%, zirconium silicate 9-15%, water reducing agent 0.3 ~0.4%, methyl 0.15~0.25%; single raw material chemical composition CaO content<3%; bottom glaze raw material chemical composition: SiO248.5~52.0%, Al2O330~34.5%, Fe2O30.1~0.2%, TiO20. 05~0.15%, CaO 0.1~0.3%, MgO 0.3~1.0%, K2O 3.0~4.0%, Na2O 1.5~2.5%, ZnO 0.9~3.0%, ZrO25~10%, firing reduction 0.9~2.0%; Technological process: batching→ball milling→sieving→iron removal→glazing slurry stale; method of using bottom glaze: glazing by bell-jar glazing process or linear glazing process. The invention enriches the color of the product, is beneficial to the color development of the ceramic ink, each color has a deeper color and a purer tone, and the product yield is high.

The invention relates to the technical field of a fine ceramic material, and particularly to a preparation method of a nanometer praseodymium yellow ceramic pigment. The preparation method comprises: taking sodium silicate, zirconium oxychloride, praseodymia, ammonium oxalate, ammonium chloride, hydrochloric acid, and the like as original raw materials; adopting a sol-gel method to prepare a praseodymium yellow gel precursor; taking sodium chloride and sodium fluoride as a mixed mineralizer; and preparing the nanometer praseodymium yellow ceramic pigment through low temperature sintering. The raw materials are low in price and are easily available; the production technology is simple and easy to control; the reagents are environment-friendly, so that the preparation method is convenient for industrial production. The prepared pigment has advantages of pure color, low sintering temperature, low energy consumption, loose and easy-powdered product, and the like, and is an ideal pigment for sintering a high-quality ceramic product.