32 results about "Zirconium disulfide" patented technology

The invention relates to titanium-dioxide-coated zirconium dioxide powder and a preparation method thereof, and belongs to the technical field of powder engineering. The inner core of the powder is monoclinic zirconium dioxide, and the coating layer of the powder is titanium dioxide. The problem that sintering densification of zirconite / zirconium oxide multi-phase materials is difficult in the prior art is solved. The temporary high-concentration titanium dioxide can be provided around zirconium oxide particles, sintering of zirconite and interface compatibility between the zirconium dioxide and the titanium dioxide are promoted, the sintering performance of the multi-phase materials can be effectively improved, and the porosity of the multi-phase materials is lowered. The preparation method of the titanium-dioxide-coated zirconium dioxide powder comprises the steps that the surfaces of the zirconium oxide particles are coated with a layer of titanium dioxide, then heat treatment is carried out to make the surfaces of the zirconium oxide particles to be tightly coated with the titanium dioxide, and therefore the titanium-dioxide-coated zirconium dioxide powder is obtained. The preparation technology is easy to implement, and industrial production is easy to achieve.

The present invention discloses a ferrozirconium red material, which is prepared from the following raw materials: silicon dioxide, an iron compound, a mineralizer, a rare earth fluoride, and zirconium dioxide. According to the present invention, the ferrozirconium red material prepared according to the formula has the following characteristics that: the wrapping rate is high, and ion is wrapped into the zirconium silicate crystal lattice in the ferric ion form so as to achieve stable color generation; and the active zirconium dioxide is adopted, and the rare earth fluoride is introduced, such that the prepared ferrozirconium red material has a good coloration effect.

The invention discloses preparation processes of zirconium tetrachloride and zirconium dioxide. The preparation process of zirconium tetrachloride comprises the following steps that 1, zircon sand, acarbon reducing agent and chlorine are added into a primary fluidizing chlorination furnace, heating is performed, primary chlorination reaction is performed to generate zirconium tetrachloride, silicon tetrachloride, carbon monoxide and carbon dioxide, and a first gas mixture is obtained; 2, the carbon monoxide is separated from the first gas mixture and is introduced into a secondary fluidizingchlorination furnace, the zircon sand and the chlorine are added into the secondary fluidizing chlorination furnace, heating is performed, secondary chlorination reaction is performed to generate zirconium tetrachloride, silicon tetrachloride and carbon dioxide, and a second gas mixture is obtained. The primary chlorination reaction and secondary chlorination reaction in the process can promote reaction of CO serving as a reducing agent, the CO having reducing potential and produced by the primary chlorination reaction can be fully and effectively utilized by coupling the primary chlorinationreaction and the secondary chlorination reaction, the input of reaction raw materials in the whole process is reduced, accordingly the production cost is reduced, and discharge of greenhouse gas is decreased.