Low titanium slag dry method treating device and dry method treating process

Abstract

The invention discloses a low titanium slag dry method treating device and a dry method treating process. The low titanium slag dry method treating device comprises a cyclone dust collector connectedwith titanium tetrachloride production equipment, an ash outlet of the cyclone dust collector is connected with an ash storage hopper, an outlet of the ash storage hopper is connected with an ash storage tank through a pipeline, and the ash storage hopper is connected with a nitrogen pressurization device and a pressure relief device; the top of the ash storage tank is connected with a bag-type dust remover, a gas discharge outlet of the bag-type dust remover is connected with an inlet of a titanium tetrachloride condenser, an outlet of the titanium tetrachloride condenser is connected with atitanium tetrachloride collecting container, and the titanium tetrachloride collecting container is also connected with a suction system for collecting non-condensable gas; and the bottom of the ash storage tank is connected with a dust cooling device, and an outlet of the dust cooling device is connected with a packaging device. According to the dry treatment method, materials separated by the cyclone dust collector can be separated again, and titanium tetrachloride products and low-titanium slag which can be sold out are collected respectively. The low titanium slag dry method treating device and the dry method treating process can solve the problems of high treatment cost and high environmental protection pressure of a low titanium slag wet slag flushing method.

Description

technical field [0001] The invention belongs to the technical field of chemical production equipment, and in particular relates to a low-titanium slag dry processing device and a dry processing process. Background technique [0002] In the process of producing titanium tetrachloride by boiling chlorination, the titanium-containing solid dust particles in the gas phase (titanium tetrachloride gas) component are called low-titanium slag, which are mainly rare metal chlorides such as vanadium, zirconium and niobium and The remaining incompletely reacted rutile, petroleum coke and other components have a certain recovery value. Because the low-titanium slag after gas-solid separation still has a very high temperature, about 350°C, and it is difficult to deal with it directly. Therefore, the current traditional treatment method is the wet slag washing method. The gas-solid separation is carried out separately, and then the low-titanium slag obtained from the separation is washed...

AI Technical Summary

Problems solved by technology

When using this method to process low-titanium slag, when every ton of titanium tetrachloride is produced, 0.08 tons of calcium hydroxide will be used, and 0.3 tons of press filter residue will be produced at the same time. The press filter residue is a general solid waste with a large calcium content, resulting in The usable components are further reduced, and the water content is 40%. If it is to be reused, the cost is too high to handle, and it will bring a large amount of high-salt wastewater that is difficult to handle.

Therefore, the current low-titanium slag treatment costs are high, and at the same time, it has caused huge environmental protection pressure on enterprises.

Images