Method for producing zirconium tetrachloride

Abstract

The invention relates to the technical field of chemical processes and in particular discloses a method for producing zirconium tetrachloride. The method comprises the following steps: respectively crushing zircon sand, petroleum coke powder and a chemical auxiliary agent; fully mixing the zircon sand and petroleum coke powder according to a ratio, adding the mixture into a boiling chloridizing furnace, and introducing chlorine for carrying out a chlorination reaction; regulating the amount of the added chemical auxiliary agent by virtue of an automatic control system, so that the temperature of the boiling chloridizing furnace is always preserved to 1100 DEG C. The chemical auxiliary agent accounts for 15-30 percent of the total weight of the zircon sand and petroleum coke powder; the weight ratio of the zircon sand to petroleum coke powder is 10:(1-2.5); and the chemical auxiliary agent refers to metal silicon, silicon carbide or a mixture of metal silicon and silicon carbide. According to the method disclosed by the invention, the reaction temperature can be constantly controlled, the complicated operation of frequently stopping and replacing is avoided, the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a process for producing zirconium tetrachloride by using zircon sand as a raw material. Background technique [0002] At present, domestic and foreign chlorination furnaces using zircon sand boiling chlorination method to produce zirconium tetrachloride all use graphite cylinder heating inside the chlorination furnace to supplement the heat required for the reaction. The disadvantages of the existing technology are: the graphite cylinder will Chemical reactions with chlorine gas and zircon sand consume graphite cylinders, which require frequent shutdowns to replace graphite cylinders during production, and the cost of replacement is high; moreover, the diameter of the fluidized chlorination furnace cannot be enlarged, which limits the capacity of a single furnace; the entire process consumes The power is large, which is not conducive to energy saving. [0003] How t...

AI Technical Summary

Problems solved by technology

[0002] At present, domestic and foreign chlorination furnaces using zircon sand boiling chlorination method to produce zirconium tetrachloride all use graphite cylinder heating inside the chlorination furnace to supplement the heat required for the reaction. The disadvantages of the existing technology are: the graphite cylinder will Chemical reactions with chlorine gas and zircon sand consume graphite cylinders, which require frequent shutdowns to replace graphite cylinders during production, and the cost of replacement is high; moreover, the diameter of the fluidized chlorination furnace cannot be enlarged, which limits the capacity of a single furnace; the entire process consumes A large amount of electricity is not conducive to saving energy

[0003] How to avoid frequent replacement of graphite cartridges, reduce power consumption, and reduce production costs, there is currently no effective solution to solve the above problems