Method for preparing cobalt-free black ceramic pigment by using copper ore tailings and product manufactured by using same

Abstract

The invention relates to a method for preparing cobalt-free black ceramic pigment by using copper ore tailings and a product manufactured by using the same. The method adopts the following industrial chemical raw materials and industrial waste slag copper tailings in percentage by weight: 10-20 percent of copper tailings, 25-35 percent of iron oxide, 26.9-30 percent of chromic oxide, 7-10 percent of nickel oxide and 15-25 percent of copper oxide. The product is obtained by mixing, calcining, pulverizing, washing, drying, pulverizing and drying, wherein the calcining temperature is 1,180-1,250 DEG C, and the temperature is kept for 60 minutes. Spinel particles which are CuCr2O4, Fe3O4 and Cr2NiO4 formed by solid phase reaction and black iron-nickel olivine sosoloid completely absorb visible light in the wavelength range of 380-780nm, thereby obtaining the black ceramic pigment product with stable color and pure chroma. The product can be widely applied to decorate various daily and architectural ceramics and is significant for the resource utilization of copper tailing waste slag materials.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), and in particular relates to a method for preparing cobalt-free black ceramic colorant by using copper ore tailings and a product obtained therefrom. Background technique [0002] From ancient times to the present, black pigments and black glazes developed from them have always been indispensable and relatively precious pigments and glazes in ceramic production. During the Eastern Han Dynasty, the working people of our country began to decorate porcelain with black glaze. At that time, a darker black glaze was fired in a reducing atmosphere. In the Eastern Jin Dynasty, black glaze with pure color can already be fired. According to modern research, those black glazes are all fired with iron-containing clay in a reducing flame, the color is very unstable, and the preparation process, especially the firing process, is difficult to control and master. In modern ceramic ind...

AI Technical Summary

Problems solved by technology

Although the black pigment and glaze of this series are not affected by the firing atmosphere, but with the Co 2 o 3 The rising price (the current market price is quoted as 380,000 yuan / ton), the mass production and application of this black material are restricted

Images