A kind of transparent black crystal bead embryo and preparation method thereof

Abstract

The invention discloses a transparent black crystal bead embryo and a preparation method thereof. The transparent black crystal bead embryo is prepared from the following components in parts by weight: 85-160 parts of quartz sand, 9-17 parts of zinc oxide, 28-51 parts of sodium carbonate, 16-30 parts of potassium carbonate, 6-15 parts of boric acid, 3-5 parts of calcium carbonate, 0.7-3.1 parts of aluminum hydroxide, 1-2 parts of salt, 2-5 parts of antimonous oxide, 0.1-1.9 parts of potassium nitrate, 0.01-0.12 part of sodium selenite, 0.001-0.003 part of ferrous sulfide, 0.1-0.9 part of didymium oxide and 1.2-2.8 nickel oxide. A lot of cerium compound is not adopted when the transparent black crystal bead embryo is prepared; coloring of selenium and compounds thereof is fixed in secondary shaping; the crystal bead embryo is adjusted to be transparent black by virtue of praseodymium neodymium and nickel compounds; and a raw material containing lead is not adopted, so that the transparent black crystal bead embryo has the advantages of being good in glossiness, vivid and regular in color, free of aberration, free of figures, high in yield, free of lead, free of pollution, and good in production benefits.

Description

technical field [0001] The invention relates to a transparent black crystal bead embryo and a preparation method thereof. Background technique [0002] Transparent black crystal bead embryos are semi-finished products used to prepare transparent black crystal products. The existing transparent black crystal bead embryos process is made in a crucible, which has poor coloring, uneven colors, patterns, unstable product quality, and low production efficiency. It is not suitable for continuous mass production, and burning with coal causes environmental pollution. Moreover, some of the existing process formulas consume expensive rare earth erbium oxide, some are colored with selenium powder but are unstable, and some contain lead compounds that pollute the environment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a kind of transparent black color with good reproducibility, consistent color, no color difference, no ...

AI Technical Summary

Problems solved by technology

[0002] Transparent black crystal bead embryos are semi-finished products used to prepare transparent black crystal products. The existing transparent black crystal bead embryos process is made in a crucible, which has poor coloring, uneven colors, patterns, unstable product quality, and low production efficiency. Not suitable for continuous mass production, and burning with coal will cause environmental pollution

Moreover, some of the existing process formulas consume expensive rare earth erbium oxide, some are colored with selenium powder but are unstable, and some contain lead compounds that pollute the environment