5 results about "Iron Black" patented technology

The invention discloses a chlorination process waste acid resource reutilization method which comprises the following steps: S1, firstly neutralizing chlorination process waste acid, and controlling the neutralization pH value to be 2.5-3.5; s2, then adding iron oxide black seed crystals; s3, carrying out oxidation treatment on the system added with the seed crystal, further neutralizing the system, and controlling the neutralization pH to generate large-particle-size iron black; and S4, carrying out separation to separate the large-particle-size iron black from other precipitates so as to obtain an iron black product. The waste acid is neutralized firstly, the pH of the waste acid is increased, and iron oxide black is prevented from being dissolved again during subsequent iron oxide black seed crystal. And then iron black crystal seeds are added, so that ferric hydroxide which is neutralized and separated out during subsequent oxidation treatment is promoted to be converted into large-particle-size iron black crystals, the particle size of the iron black crystals is obviously larger than that of precipitates of other metal ions, the iron black crystals can be effectively separated from the other precipitates, and the purity of the iron black product is greatly improved.

This invention provides an antibacterial ink for gypsum board surfaces and its preparation method, belonging to the field of ink technology. The antibacterial ink for gypsum board surfaces provided by this invention comprises the following components in parts by weight: 20-40 parts resin binder, 0.5-5 parts graphene, 5-15 parts iron black, 1-8 parts blackening agent, 1-3 parts dispersant, 0.1-1 part defoamer, 0.1-1 part leveling agent, and 10-30 parts solvent. This invention promotes uniform dispersion of each raw material in the ink system through stepwise preparation of the dispersion liquid, resulting in an antibacterial ink for gypsum board surfaces without significant agglomeration or precipitation, thus solving the problem of simultaneously achieving antibacterial, antifungal, and antiviral functions with color.

The invention belongs to the technical field of ceramic decorative materials, and provides a black-matrix golden ceramic painting material based on hawksbill glaze color development and a preparation and firing method thereof.The black-matrix golden ceramic painting material based on hawksbill glaze color development comprises a composite glaze component, and the composite glaze component is composed of a high-iron black glaze component and a low-iron light-colored glaze component; the high-iron black glaze comprises the following components in percentage by mass: 40-50% of feldspar, 10-20% of kaolin, 10-15% of limestone, 8-15% of iron oxide and 1-3% of manganese oxide. The low-iron light-colored glaze comprises the following components in percentage by mass: 50-60% of feldspar, 5-10% of straw ash, 10-15% of limestone and 1-3% of iron oxide. The method breaks through the randomness limitation of traditional hawksbill glaze stripes, replaces precious metal with mineral color development, realizes controllable and artistic expression of gold color patterns, has the characteristics of low cost, high temperature resistance and wear resistance, is suitable for art ceramics, domestic ceramics and building decoration tiles, and provides a new process path for ceramic decoration.

The invention discloses gray commercial concrete for synergistically toning by using red mud and fly ash and a preparation method of the gray commercial concrete. The gray commercial concrete is prepared from the following components in parts by mass: 100 parts of cement, 15 to 25 parts of red mud, 20 to 30 parts of fly ash, 0 to 10 parts of mineral powder, 0.1 to 0.3 part of carbon black or iron black, 1.0 to 1.5 parts of nano CaCO3, 1.0 to 1.2 parts of polycarboxylate superplasticizer, 280 to 380 parts of aggregate and 40 to 55 parts of water. The sand ratio is 35-45%, and the water-binder ratio is 0.38-0.45; the color difference delta E between the concrete and a reference sample is less than or equal to 1.5, the 28-day compressive strength is greater than or equal to 30 MPa, and the chloride ion diffusion coefficient is less than or equal to 1000 * 10 <-12 > m < 2 According to the invention, the color of the red mud and fly ash is consistent with that of a reference sample prepared from ordinary Portland cement (delta E is less than or equal to 1.5) on the premise of not adding pigments and not carrying out decolorization treatment by regulating and controlling the co-doping ratio of the red mud and the fly ash, and the red mud and fly ash composite material is suitable for coating-free engineering scenes such as municipal prefabricated parts, landscape concrete and pavement bricks.

The application discloses a kind of core-shell structure high-temperature photo-thermal phase change heat storage particles and its preparation method and application, the particle is composed of core material and shell;The core material is white spherical particle with magnesium oxide and hexagonal boron nitride as skeleton, carrying sodium chloride-potassium chloride eutectic salt;The shell is manganese iron black.The core-shell structure high-temperature photo-thermal phase change heat storage particles of the application has the characteristics of high-temperature photo-thermal conversion and phase change heat storage integration, the thermal conductivity of particle material is obviously improved, the heat storage density is higher, solar spectrum absorption rate is strong, and the cycle stability is good, can realize continuous efficient high-temperature solar photo-thermal conversion and phase change heat storage in flow state.