Black ceramic pigment and preparation method thereof

Abstract

The invention provides a preparation method for a black ceramic pigment. The preparation method comprises the following steps: 1) uniformly mixing electric furnace smelting stainless steel fly ash containing an iron element with chromic oxide, nickel monoxide and manganese monoxide according to a molar ratio of Fe to Cr to Ni to Mn being equal to1:(0.8-1.3):(0.5-1.1):(0.7-1.2), so as to obtain a mixture material; and 2) placing the mixture material in a microwave field, microwave-heating in an air atmosphere, while a temperature of the mixture material rises to 1050-1200 DEG C, preserving heatfor 10-20 min, taking out the roasted material from the microwave field, and cooling to room temperature, so as to prepare the black ceramic pigment. The method uses the industrial solid waste electric furnace smelting stainless steel fly ash as a raw material, so that while transition metal elements richly contained in the fly ash are greatly used, the effect on the environment by emission thereof is eliminated, and defects that sintering time is long, a needed temperature is high and energy consumption is high caused by of preparing the black ceramic pigment by using an industrial solid waste currently. The prepared black ceramic pigment has the characteristics of high blackness, pure color generation and good coloring property.

Description

technical field [0001] The invention belongs to the technical field of ceramic pigments, and in particular relates to a black ceramic pigment and a preparation method thereof. Background technique [0002] With the development of social and economic construction, my country's steel industry has risen rapidly, becoming the world's largest steel producer, and the production and consumption of stainless steel have also increased rapidly. During the stainless steel smelting process, the electric furnace stainless steel dust is discharged in large quantities as a by-product. Due to the characteristics of complex process flow, high energy consumption, low utilization rate, and discharge of secondary pollutants in the current treatment methods for stainless steel ash from electric furnaces, a large amount of stainless steel ash from electric furnaces is only stored for storage, which takes up a lot of land. The leaching of heavy metal elements contained in it will cause serious ha...

AI Technical Summary

Problems solved by technology

Due to the characteristics of complex process flow, high energy consumption, low utilization rate, and discharge of secondary pollutants in the current treatment methods for stainless steel ash from electric furnaces, a large amount of stainless steel ash from electric furnaces is only stored for storage, which takes up a lot of land. The leaching of heavy metal elements contained in it will cause serious harm to the environment

[0003] Black ceramic pigments are the most widely used pigments in ceramic decoration materials. The traditional production process needs to add cobalt oxide to ensure pure black color. However, the price of cobalt oxide remains high, which seriously restricts the development of black ceramic products.

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