5 results about "Sodium oxide" patented technology

The invention provides a method for extracting valuable metal elements from coal gangue. The method comprises the following steps of: crushing and grinding coal gangue ore, performing supercritical / subcritical water activation, classifying the coal gangue ore into an organic liquid phase and a slag phase by a hydrocyclone, and synthesizing carbon dioxide and water from the organic liquid phase through a supercritical reaction, wherein the carbon dioxide is used for a subsequent sodium aluminate reaction to obtain aluminum hydroxide, the water is used for supplementing water to a shaking table, and the slag phase passes through the shaking table to obtain enriched ore of carbon and silicon dioxide, aluminum oxide, silicate and ore containing a small amount of titanium and iron elements. Carbon and silicon dioxide are separated and collected through electric separation, aluminum oxide, silicate and ore containing a small amount of titanium and iron elements are added into sodium carbonate and calcium carbonate to be roasted and dissolved after roasting, slag of calcium silicate and calcium titanate is obtained and can be used as a coating, a dissolving solution contains sodium aluminate, sodium ferrite and other substances, sodium hydroxide is added into the dissolving solution to generate ferric hydroxide and sodium aluminate, the ferric hydroxide can be used as a coating, and carbon dioxide is introduced into the sodium aluminate to generate aluminum hydroxide which is used as an inorganic flame-retardant additive.

The invention discloses a blue-in-green rice-pattern glaze and an application method thereof. The blue-in-green rice-pattern glaze is prepared from the following natural mineral raw materials and industrial chemical engineering raw materials in percentage by mass: 72.25 to 72.39% of SiO2 (silicon dioxide), 15.13 to 15.50% of Al2O3 (aluminum oxide), 0.71 to 0.73% of Fe2O3 (ferric oxide), 2.61 to 2.93% of K2O (potassium oxide), 1.23 to 2.22% of Na2O (sodium oxide), 6.64 to 6.93% of CaO (calcium oxide), and 0.28 to 0.45% of MgO (magnesium oxide) through proportioning, ball milling and screening. The blue-in-green rice-pattern glaze has the advantages that the blue-in-green decoration effect is realized without adding of oxide coloring agent, the decoration effect of the traditional rice-pattern porcelain in Jingdezhen is broken, most of raw materials are natural mineral raw materials, the sources are rich, the cost is low, any side effect to a human body is avoided, and the market space is broad.

The invention discloses a ceramic glaze. The ceramic glaze is characterized by being prepared from the following raw materials in parts by weight: 35-50 parts of nano-silica, 55-75 parts of kaolin, 15-30 parts of albite, 5-15 parts of magnesium oxide, 5-15 parts of sodium oxide, 25-50 parts of dolomite, 25-40 parts of limestone, 3-8 parts of pigment and filler, 15-20 parts of property-modifying additive, and 55-70 parts of deionized water. The invention further discloses a preparation method of the ceramic glaze. The ceramic glaze disclosed in the invention has good brightness and glossiness,and the prepared pigment and filler are present in a nanometer-grade form, have a good coloring effect and are not easy to agglomerate; the ceramic glaze prepared from the activated kaolin, the pigment and filler and the property-modifying additive has not only good mechanical properties, but also good chemical stability and wear resistance, and can effectively protect a ceramic body and allow theceramic to have a better appearance.