Method for preparing hydrophilic dry-mixed colorant applied to entire-body large-size ceramic sheet material

Abstract

The invention relates to a method for preparing a hydrophilic dry-mixed colorant applied to an entire-body large-size ceramic sheet material. The method comprises the steps: (1) treating raw materials, wherein the raw materials comprise colorants, a color supporting matrix and a mineralizer with the particle size of 200 to 400 meshes, and a dispersant is premixed according to a formula for later use; (2) proportioning and mixing the raw materials: subjecting various ceramic colorants to weighing and matching, then, loading the mixture to a mill for crushing, and carrying out mixing, drying andscreening; (3) carrying out saggar loading and firing: loading the uniform-mixed and dried green stock to a refractory saggar for calcining according to colorant requirements; (4) carrying out saggardischarging, coarse breaking and fine crushing: carrying out coarse breaking and fine crushing according to set fineness after a calcined matrix colorant is discharged from the saggar, and carrying out fine milling or stirring milling with a ball mill until the fineness is 325 meshes; (5) carrying out repeated washing with hot and cold water or diluted hydrochloric acid until a required pH valueis achieved, carrying out separating, and then, carrying out drying, powdering and screening until the fineness is 325 meshes, wherein the moisture content after drying is lower than 0.5%; and (6) adding 1% to 3% of dispersant, carrying out mixing modification with a three-dimensional mixer or airflow mill, and carrying out packaging and warehousing.

Description

technical field [0001] The invention relates to the technical field of ceramic tile manufacture, in particular to a method for preparing a hydrophilic dry-mix colorant applied to whole-body large-size ceramic plates. Background technique [0002] At present, the known production technology of ceramic tiles is wet mixing or the combination of wet and dry color mixing. In contrast, the wet process is a complete system, including ball mills, spray towers, underground slurry tanks, etc., adding color materials After that, all the equipment will be polluted. If it is necessary to make other powders of different colors, it must be cleaned. The labor intensity is high, the production cost is high, and the pollution is also very large. The amount of one-time preparation is too large. If the production output is not accurate, prepare more The colored powder produced needs to be poured out or pressed into the warehouse, resulting in waste. The advantages of the dry process are relati...

AI Technical Summary

Problems solved by technology

At present, most manufacturers in the market accept and use hydrophilic dry-mixed colorants, especially imported products are mainly hydrophilic dry-mixed colorants. Before that, more domestic manufacturers used hydrophobic-based dry-mixed colorants. In recent years In recent years, the application technology in this area has been catching up, and there have been great breakthroughs. For example, in recent years, some manufacturers have used imported fumed silica products such as Degussa and Cabot, and domestic fumed silica and imported Product differences are shrinking, but overall, there are still some differences in the production and application of hydrophilic dispersant technology

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