Breakthrough dupont technology blockade Six companies start chloride titanium dioxide project

Home of the chlorination process titanium white appear the situation of "prosperous". Recently, according to titanium dioxide industry, the domestic has 6 companies have mastered the chlorination process titanium white technology, and launched the chlorination process titanium white project construction, the end of the jinzhou titanium industry alone more than 10 years of history.

Chlorination is the rutile or high titanium slag powder mixed with coke after high temperature chlorination production of pure titanium tetrachloride, after distillation, except for vanadium, high temperature oxidation, grading, surface treatment, then through filtration, washing, drying, crushing the titanium pigment products. And sulfuric acid method is the titanium iron powder with concentrated sulfuric acid acidolysis reaction of titanium sulfate production, the hydrolyzed metatitanic acid is generated, and then through calcine, crushing the titanium pigment products.

Several companies grasp the chlorination process

Sulfuric acid method in a dilemma

"Domestic demand for titanium dioxide is expected in 2020 will reach 2020 tons. Sulfuric acid method of titanium white production proportion of the national capacity is very big, chloride titanium white production line also has, but the raw materials are all imported." The Chinese academy of engineering GanYong said, if the chlorination process titanium white production line is imported raw materials, the meaning is not big.

Technical expert thinks, although domestic through high temperature carbonization, low temperature chlorination technology of manufacturing titanium slag, as the chlorination process titanium white for raw material, but the cost is not competitive.

Many titanium dioxide companies believe that the original departments that sulfuric acid method of titanium white solid waste treatment of environmental pollution is large, in fact the solid waste is much lower than titanium white chloride. Over the past few years the sulfuric acid method of titanium white project belongs to limit development class, over the years a bit, now as long as according to environment protection, energy consumption, water consumption, also no longer limit.