A kind of brown crystal bead embryo and preparation method thereof

Abstract

The invention discloses a tawny crystal bead blank and a preparation method thereof. The tawny crystal bead blank is composed of the following components in parts by weight: 95-165 parts of quartz sand, 10-18 parts of zinc oxide, 28-52 parts of sodium carbonate, 15-31 parts of potassium carbonate, 6-16 parts of boric acid, 3-5 parts of calcium carbonate, 0.8-3.2 parts of aluminum hydroxide, 1-2 parts of salt, 2-5 parts of antimony trioxide, 0.1-2 parts of potassium nitrate, 0.01-0.18 part of sodium selenite, 0.001-0.003 part of ferrous sulfide and 0.1-0.9 part of neodymium oxide. In the tawny crystal bead blank preparation process, no abundant rare-earth cerium compound is adopted for coloring the immobilized selenium and compounds thereof in the secondary reshaping. The tawny crystal bead blank is free of any leady raw material, and has the advantages of favorable glossiness, bright color, high regularity, no color difference, no grains, high yield, no lead or pollution and favorable production benefit.

Description

technical field [0001] The invention relates to a brown crystal bead embryo and a preparation method thereof. Background technique [0002] Brown crystal bead embryos are semi-finished products used to prepare brown crystal products. The existing brown crystal bead embryos are manufactured in crucibles, which have poor coloring, uneven colors, patterns, unstable product quality, low production efficiency, and are not suitable for continuous production. Mass production and burning of coal 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. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a brown crystal with good color reproducibility, consistent color, no color difference, no pattern, stable product quality, high production effi...

AI Technical Summary

Problems solved by technology

[0002] Brown crystal bead embryos are semi-finished products used to prepare brown crystal products. The existing brown crystal bead embryos are manufactured in crucibles, which have poor coloring, uneven colors, patterns, unstable product quality, low production efficiency, and are not suitable for continuous production. Mass production, and the use of coal to 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